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diff --git a/examples/async/eratosthenes/doc/eratosthenes.rst b/examples/async/eratosthenes/doc/eratosthenes.rst new file mode 100644 index 000000000..494a94df3 --- /dev/null +++ b/examples/async/eratosthenes/doc/eratosthenes.rst @@ -0,0 +1,53 @@ +Async examples +============== + +The Python language provides keywords for asynchronous operations, i.e., +"async" to define coroutines or "await" to schedule asynchronous calls in the +event loop (see `PEP 492 <https://peps.python.org/pep-0492/>`_). It is up to +packages to implement an event loop, support for these keywords, and more. + +The best-known package for this is `asyncio`. Since both an async package and +Qt itself work with event loops, special care must be taken to ensure that both +event loops work with each other. asyncio offers a function `stop` that allows +stopping an event loop without closing it. If it is called while a loop is +running through `run_forever`, the loop will run the current batch of callbacks +and then exit. New callbacks wil be scheduled the next time `run_forever` is +called. + +This approach is highly experimental and does not represent the state of the +art of integrating Qt with asyncio. Instead it should rather be regarded more +as a proof of concept to contrast asyncio with other async packages such as +`trio`, which offers a dedicated `low-level API +<https://trio.readthedocs.io/en/stable/reference-lowlevel.html>`_ for more +complicated use cases such as this. Specifically, there exists a function +`start_guest_run` that enables running the Trio event loop as a "guest" inside +another event loop - Qt's in our case. + +Based on this functionality, two examples for async usage with Qt have been +implemented: `eratosthenes` and `minimal`: + +.. image:: eratosthenes.svg + :alt: Async example: Eratosthenes + :width: 400 + +* `eratosthenes` is a more extensive example that visualizes the Sieve of + Eratosthenes algorithm. This algorithm per se is not one that is particularly + suitable for asynchronous operations as it's not I/O-heavy, but synchronizing + coroutines to a configurable tick allows for a good visualization. +* `minimal` is a minimal example featuring a button that triggers an + asynchronous coroutine with a sleep. It is designed to highlight which + boilerplate code is essential for an async program with Qt and offers a + starting point for more complex programs. + +Both examples feature: + +1. A window class. +2. An `AsyncHelper` class containing `start_guest_run` plus helpers and + callbacks necessary for its invocation. The entry point for the Trio/asyncio + guest run is provided as an argument from outside, which can be any async + function. + +While `eratosthenes` offloads the asynchronous logic that will run in +trio's/asyncio's event loop into a separate class, `minimal` demonstrates that +async functions can be integrated into any class, including subclasses of Qt +classes. diff --git a/examples/async/eratosthenes/doc/eratosthenes.svg b/examples/async/eratosthenes/doc/eratosthenes.svg new file mode 100644 index 000000000..eaf53da50 --- /dev/null +++ b/examples/async/eratosthenes/doc/eratosthenes.svg @@ -0,0 +1 @@ +<svg xmlns="http://www.w3.org/2000/svg" width="1210.666" height="886.666" viewBox="0 0 908 665" baseProfile="tiny" xmlns:v="https://vecta.io/nano"><style><![CDATA[.B{stroke:none}.C{font-family:.AppleSystemUIFont}.D{font-size:13px}.E{font-weight:700}.F{fill:#000}.G{fill:#548f7c}.H{fill:#bab040}.I{fill:#51a660}.J{fill:#a193b6}.K{fill:#8a4a8f}.L{fill:#45b2a7}.M{fill:#916bbd}.N{fill:#7dad6b}.O{fill:#628f47}.P{fill:#6474c0}.Q{fill:#b182b0}.R{fill:#a94257}.S{fill:#a1794d}.T{fill:#bbac54}.U{fill:#6e4344}.V{fill:#a38b9d}.W{fill:#6c4268}.X{fill:#974c66}.Y{fill:#8163bb}.Z{fill:#bda991}.a{fill:#599c9d}.b{fill:#7ec05e}.c{fill:#b26b51}.d{fill:#434da9}.e{fill:#a46a69}.f{fill:#6a6467}.g{fill:#954ca5}.h{fill:#6f4965}.i{fill:#7a99b1}.j{fill:#786344}.k{fill:#898683}.l{fill:#ac989d}.m{fill:#4f5a7b}.n{fill:#b28c5f}.o{fill:#639747}.p{fill:#aba64a}.q{fill:#916c5e}.r{fill:#b0929e}.s{fill:#909864}.t{fill:#a14faf}]]></style><g fill="none" stroke="#000" fill-rule="evenodd" class="C B"><path d="M0 0h908v665H0z" fill="#ececec" class="D"/><g font-size="14" class="F"><text xml:space="preserve" y="25.781" x="192">🥳</text><text xml:space="preserve" x="214.016" y="25.781"> Congratulations! 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b/examples/async/eratosthenes/eratosthenes.pyproject new file mode 100644 index 000000000..f0de627ef --- /dev/null +++ b/examples/async/eratosthenes/eratosthenes.pyproject @@ -0,0 +1,3 @@ +{ + "files": ["eratosthenes_trio.py", "eratosthenes_asyncio.py"] +} diff --git a/examples/async/eratosthenes/eratosthenes_asyncio.py b/examples/async/eratosthenes/eratosthenes_asyncio.py new file mode 100644 index 000000000..a5177a94b --- /dev/null +++ b/examples/async/eratosthenes/eratosthenes_asyncio.py @@ -0,0 +1,220 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import (Qt, QEvent, QObject, QTimer, Signal, Slot) +from PySide6.QtGui import (QColor, QFont, QPalette) +from PySide6.QtWidgets import (QApplication, QGridLayout, QLabel, QMainWindow, QVBoxLayout, QWidget) + +import asyncio +import signal +import sys +from random import randint + + +class MainWindow(QMainWindow): + + set_num = Signal(int, QColor) + + def __init__(self, rows, cols): + super().__init__() + + self.rows = rows + self.cols = cols + + widget_central = QWidget() + self.setCentralWidget(widget_central) + + layout_outer = QVBoxLayout(widget_central) + + self.widget_outer_text = QLabel() + font = QFont() + font.setPointSize(14) + self.widget_outer_text.setFont(font) + layout_outer.addWidget(self.widget_outer_text, alignment=Qt.AlignmentFlag.AlignCenter) + + widget_inner_grid = QWidget() + layout_outer.addWidget(widget_inner_grid, alignment=Qt.AlignmentFlag.AlignCenter) + + self.layout_inner_grid = QGridLayout(widget_inner_grid) + k = 1 + for i in range(self.rows): + for j in range(self.cols): + box = QLabel(f"{k}") + self.layout_inner_grid.addWidget(box, i, j, Qt.AlignmentFlag.AlignCenter) + k += 1 + + self.set_num.connect(self.set_num_handler) + + @Slot(int, QColor) + def set_num_handler(self, i, color): + row = int((i - 1) / self.cols) + col = (i - 1) - (row * self.cols) + widget = self.layout_inner_grid.itemAtPosition(row, col).widget() + + font = QFont() + font.setWeight(QFont.Bold) + palette = QPalette() + palette.setColor(QPalette.WindowText, color) + widget.setFont(font) + widget.setPalette(palette) + + +class Eratosthenes(QObject): + + done_signal = Signal() + + """ This Sieve of Eratosthenes runs on a configurable tick (default + 0.1 seconds). At each tick, a new subroutine will be created + that will check multiples of the next prime number. Each of + these subroutines also operates on the same tick. """ + + def __init__(self, num, window, tick=0.1): + super().__init__() + self.num = num + self.sieve = [True] * self.num + self.base = 0 + self.window = window + self.tick = tick + self.coroutines = [] + self.done = False + self.loop = None + + def get_tick(self): + return self.loop.time() + self.tick + + async def start(self): + self.loop = asyncio.get_event_loop() + asyncio.create_task(self.update_text()) + while self.base <= self.num / 2: + await asyncio.sleep(self.tick) + for i in range(self.base + 1, self.num): + if self.sieve[i]: + self.base = i + break + asyncio.create_task(self.mark_number(self.base + 1)) + while sum(self.coroutines) > 0: + await asyncio.sleep(self.tick) + self.done = True + + async def mark_number(self, base): + id = len(self.coroutines) + self.coroutines.append(1) + color = QColor(randint(64, 192), randint(64, 192), randint(64, 192)) + for i in range(2 * base, self.num + 1, base): + if self.sieve[i - 1]: + self.sieve[i - 1] = False + self.window.set_num.emit(i, color) + await asyncio.sleep(self.tick) + self.coroutines[id] = 0 + + async def update_text(self): + while not self.done: + await asyncio.sleep(self.tick) + if int(self.loop.time() + self.tick) % 2: + text = "⚙️ ...Calculating prime numbers... ⚙️" + else: + text = "👩💻 ...Hacking the universe... 👩💻" + self.window.widget_outer_text.setText(text) + + self.window.widget_outer_text.setText( + "🥳 Congratulations! You found all the prime numbers and solved mathematics. 🥳" + ) + + # This signals to the guest run when there are no more asyncio tasks + # left so its event loop can finish. + self.done_signal.emit() + + +class AsyncHelper(QObject): + + class ReenterQtObject(QObject): + """ This is a QObject to which an event will be posted, allowing + asyncio to resume when the event is handled. event.fn() is + the next entry point of the asyncio event loop. """ + def event(self, event): + if event.type() == QEvent.Type.User + 1: + event.fn() + return True + return False + + class ReenterQtEvent(QEvent): + """ This is the QEvent that will be handled by the ReenterQtObject. + self.fn is the next entry point of the asyncio event loop. """ + def __init__(self, fn): + super().__init__(QEvent.Type(QEvent.Type.User + 1)) + self.fn = fn + + def __init__(self, worker, entry): + super().__init__() + self.reenter_qt = self.ReenterQtObject() + self.entry = entry + self.loop = asyncio.new_event_loop() + self.done = False + + self.worker = worker + if hasattr(self.worker, "start_signal") and isinstance(self.worker.start_signal, Signal): + self.worker.start_signal.connect(self.on_worker_started) + if hasattr(self.worker, "done_signal") and isinstance(self.worker.done_signal, Signal): + self.worker.done_signal.connect(self.on_worker_done) + + @Slot() + def on_worker_started(self): + """ To use asyncio and Qt together, one must run the asyncio + event loop as a "guest" inside the Qt "host" event loop. """ + if not self.entry: + raise Exception("No entry point for the asyncio event loop was set.") + asyncio.set_event_loop(self.loop) + self.loop.create_task(self.entry()) + self.loop.call_soon(self.next_guest_run_schedule) + self.done = False # Set this explicitly as we might want to restart the guest run. + self.loop.run_forever() + + @Slot() + def on_worker_done(self): + """ When all our current asyncio tasks are finished, we must end + the "guest run" lest we enter a quasi idle loop of switching + back and forth between the asyncio and Qt loops. We can + launch a new guest run by calling launch_guest_run() again. """ + self.done = True + + def continue_loop(self): + """ This function is called by an event posted to the Qt event + loop to continue the asyncio event loop. """ + if not self.done: + self.loop.call_soon(self.next_guest_run_schedule) + self.loop.run_forever() + + def next_guest_run_schedule(self): + """ This function serves to pause and re-schedule the guest + (asyncio) event loop inside the host (Qt) event loop. It is + registered in asyncio as a callback to be called at the next + iteration of the event loop. When this function runs, it + first stops the asyncio event loop, then by posting an event + on the Qt event loop, it both relinquishes to Qt's event + loop and also schedules the asyncio event loop to run again. + Upon handling this event, a function will be called that + resumes the asyncio event loop. """ + self.loop.stop() + QApplication.postEvent(self.reenter_qt, self.ReenterQtEvent(self.continue_loop)) + + +if __name__ == "__main__": + rows = 40 + cols = 40 + num = rows * cols + + app = QApplication(sys.argv) + main_window = MainWindow(rows, cols) + eratosthenes = Eratosthenes(num, main_window) + async_helper = AsyncHelper(eratosthenes, eratosthenes.start) + + # This establishes the entry point for the asyncio guest run. It + # varies depending on how and when its event loop is to be + # triggered, e.g., from the beginning (as here) or rather at a + # specific moment like a button press. + QTimer.singleShot(0, async_helper.on_worker_started) + + main_window.show() + + signal.signal(signal.SIGINT, signal.SIG_DFL) + app.exec() diff --git a/examples/async/eratosthenes/eratosthenes_trio.py b/examples/async/eratosthenes/eratosthenes_trio.py new file mode 100644 index 000000000..89d3d1ce6 --- /dev/null +++ b/examples/async/eratosthenes/eratosthenes_trio.py @@ -0,0 +1,197 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import (Qt, QEvent, QObject, QTimer, Signal, Slot) +from PySide6.QtGui import (QColor, QFont, QPalette) +from PySide6.QtWidgets import (QApplication, QGridLayout, QLabel, QMainWindow, QVBoxLayout, QWidget) + +import outcome +import signal +import sys +import traceback +import trio +from random import randint + + +class MainWindow(QMainWindow): + + set_num = Signal(int, QColor) + + def __init__(self, rows, cols): + super().__init__() + + self.rows = rows + self.cols = cols + + widget_central = QWidget() + self.setCentralWidget(widget_central) + + layout_outer = QVBoxLayout(widget_central) + + self.widget_outer_text = QLabel() + font = QFont() + font.setPointSize(14) + self.widget_outer_text.setFont(font) + layout_outer.addWidget(self.widget_outer_text, alignment=Qt.AlignmentFlag.AlignCenter) + + widget_inner_grid = QWidget() + layout_outer.addWidget(widget_inner_grid, alignment=Qt.AlignmentFlag.AlignCenter) + + self.layout_inner_grid = QGridLayout(widget_inner_grid) + k = 1 + for i in range(self.rows): + for j in range(self.cols): + box = QLabel(f"{k}") + self.layout_inner_grid.addWidget(box, i, j, Qt.AlignmentFlag.AlignCenter) + k += 1 + + self.set_num.connect(self.set_num_handler) + + @Slot(int, QColor) + def set_num_handler(self, i, color): + row = int((i - 1) / self.cols) + col = (i - 1) - (row * self.cols) + widget = self.layout_inner_grid.itemAtPosition(row, col).widget() + + font = QFont() + font.setWeight(QFont.Bold) + palette = QPalette() + palette.setColor(QPalette.WindowText, color) + widget.setFont(font) + widget.setPalette(palette) + + +class Eratosthenes(QObject): + + """ This Sieve of Eratosthenes runs on a configurable tick (default + 0.1 seconds). At each tick, a new subroutine will be created + that will check multiples of the next prime number. Each of + these subroutines also operates on the same tick. """ + + def __init__(self, num, window, tick=0.1): + super().__init__() + self.num = num + self.sieve = [True] * self.num + self.base = 0 + self.window = window + self.tick = tick + self.coroutines = [] + self.done = False + self.nursery = None + + async def start(self): + async with trio.open_nursery() as self.nursery: + self.nursery.start_soon(self.update_text) + while self.base <= self.num / 2: + await trio.sleep(self.tick) + for i in range(self.base + 1, self.num): + if self.sieve[i]: + self.base = i + break + self.nursery.start_soon(self.mark_number, self.base + 1) + while sum(self.coroutines) > 0: + await trio.sleep(self.tick) + self.done = True + + async def mark_number(self, base): + id = len(self.coroutines) + self.coroutines.append(1) + color = QColor(randint(64, 192), randint(64, 192), randint(64, 192)) + for i in range(2 * base, self.num + 1, base): + if self.sieve[i - 1]: + self.sieve[i - 1] = False + self.window.set_num.emit(i, color) + await trio.sleep(self.tick) + self.coroutines[id] = 0 + + async def update_text(self): + while not self.done: + await trio.sleep(self.tick) + if int(trio.lowlevel.current_clock().current_time() + self.tick) % 2: + text = "⚙️ ...Calculating prime numbers... ⚙️" + else: + text = "👩💻 ...Hacking the universe... 👩💻" + self.window.widget_outer_text.setText(text) + + self.window.widget_outer_text.setText( + "🥳 Congratulations! You found all the prime numbers and solved mathematics. 🥳" + ) + + +class AsyncHelper(QObject): + + class ReenterQtObject(QObject): + """ This is a QObject to which an event will be posted, allowing + Trio to resume when the event is handled. event.fn() is the + next entry point of the Trio event loop. """ + def event(self, event): + if event.type() == QEvent.Type.User + 1: + event.fn() + return True + return False + + class ReenterQtEvent(QEvent): + """ This is the QEvent that will be handled by the ReenterQtObject. + self.fn is the next entry point of the Trio event loop. """ + def __init__(self, fn): + super().__init__(QEvent.Type(QEvent.Type.User + 1)) + self.fn = fn + + def __init__(self, worker, entry): + super().__init__() + self.reenter_qt = self.ReenterQtObject() + self.entry = entry + + self.worker = worker + if hasattr(self.worker, "start_signal") and isinstance(self.worker.start_signal, Signal): + self.worker.start_signal.connect(self.launch_guest_run) + + @Slot() + def launch_guest_run(self): + """ To use Trio and Qt together, one must run the Trio event + loop as a "guest" inside the Qt "host" event loop. """ + if not self.entry: + raise Exception("No entry point for the Trio guest run was set.") + trio.lowlevel.start_guest_run( + self.entry, + run_sync_soon_threadsafe=self.next_guest_run_schedule, + done_callback=self.trio_done_callback, + ) + + def next_guest_run_schedule(self, fn): + """ This function serves to re-schedule the guest (Trio) event + loop inside the host (Qt) event loop. It is called by Trio + at the end of an event loop run in order to relinquish back + to Qt's event loop. By posting an event on the Qt event loop + that contains Trio's next entry point, it ensures that Trio's + event loop will be scheduled again by Qt. """ + QApplication.postEvent(self.reenter_qt, self.ReenterQtEvent(fn)) + + def trio_done_callback(self, outcome_): + """ This function is called by Trio when its event loop has + finished. """ + if isinstance(outcome_, outcome.Error): + error = outcome_.error + traceback.print_exception(type(error), error, error.__traceback__) + + +if __name__ == "__main__": + rows = 40 + cols = 40 + num = rows * cols + + app = QApplication(sys.argv) + main_window = MainWindow(rows, cols) + eratosthenes = Eratosthenes(num, main_window) + async_helper = AsyncHelper(eratosthenes, eratosthenes.start) + + # This establishes the entry point for the Trio guest run. It varies + # depending on how and when its event loop is to be triggered, e.g., + # from the beginning (as here) or rather at a specific moment like + # a button press. + QTimer.singleShot(0, async_helper.launch_guest_run) + + main_window.show() + + signal.signal(signal.SIGINT, signal.SIG_DFL) + app.exec() diff --git a/examples/async/eratosthenes/requirements_trio.txt b/examples/async/eratosthenes/requirements_trio.txt new file mode 100644 index 000000000..e2cc10204 --- /dev/null +++ b/examples/async/eratosthenes/requirements_trio.txt @@ -0,0 +1,2 @@ +trio +outcome diff --git a/examples/async/minimal/doc/minimal.png b/examples/async/minimal/doc/minimal.png Binary files differnew file mode 100644 index 000000000..b8a18963f --- /dev/null +++ b/examples/async/minimal/doc/minimal.png diff --git a/examples/async/minimal/doc/minimal.rst b/examples/async/minimal/doc/minimal.rst new file mode 100644 index 000000000..5a1cf8544 --- /dev/null +++ b/examples/async/minimal/doc/minimal.rst @@ -0,0 +1,52 @@ +Async examples +============== + +The Python language provides keywords for asynchronous operations, i.e., +"async" to define coroutines or "await" to schedule asynchronous calls in the +event loop (see `PEP 492 <https://peps.python.org/pep-0492/>`_). It is up to +packages to implement an event loop, support for these keywords, and more. + +The best-known package for this is `asyncio`. Since both an async package and +Qt itself work with event loops, special care must be taken to ensure that both +event loops work with each other. asyncio offers a function `stop` that allows +stopping an event loop without closing it. If it is called while a loop is +running through `run_forever`, the loop will run the current batch of callbacks +and then exit. New callbacks wil be scheduled the next time `run_forever` is +called. + +This approach is highly experimental and does not represent the state of the +art of integrating Qt with asyncio. Instead it should rather be regarded more +as a proof of concept to contrast asyncio with other async packages such as +`trio`, which offers a dedicated `low-level API +<https://trio.readthedocs.io/en/stable/reference-lowlevel.html>`_ for more +complicated use cases such as this. Specifically, there exists a function +`start_guest_run` that enables running the Trio event loop as a "guest" inside +another event loop - Qt's in our case. + +Based on this functionality, two examples for async usage with Qt have been +implemented: `eratosthenes` and `minimal`: + +.. image:: minimal.png + :alt: Async example: Minimal + +* `eratosthenes` is a more extensive example that visualizes the Sieve of + Eratosthenes algorithm. This algorithm per se is not one that is particularly + suitable for asynchronous operations as it's not I/O-heavy, but synchronizing + coroutines to a configurable tick allows for a good visualization. +* `minimal` is a minimal example featuring a button that triggers an + asynchronous coroutine with a sleep. It is designed to highlight which + boilerplate code is essential for an async program with Qt and offers a + starting point for more complex programs. + +Both examples feature: + +1. A window class. +2. An `AsyncHelper` class containing `start_guest_run` plus helpers and + callbacks necessary for its invocation. The entry point for the Trio/asyncio + guest run is provided as an argument from outside, which can be any async + function. + +While `eratosthenes` offloads the asynchronous logic that will run in +trio's/asyncio's event loop into a separate class, `minimal` demonstrates that +async functions can be integrated into any class, including subclasses of Qt +classes. diff --git a/examples/async/minimal/minimal.pyproject b/examples/async/minimal/minimal.pyproject new file mode 100644 index 000000000..b4b1a3f80 --- /dev/null +++ b/examples/async/minimal/minimal.pyproject @@ -0,0 +1,3 @@ +{ + "files": ["minimal_trio.py", "minimal_asyncio.py"] +} diff --git a/examples/async/minimal/minimal_asyncio.py b/examples/async/minimal/minimal_asyncio.py new file mode 100644 index 000000000..80c81da3b --- /dev/null +++ b/examples/async/minimal/minimal_asyncio.py @@ -0,0 +1,123 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import (Qt, QEvent, QObject, Signal, Slot) +from PySide6.QtWidgets import (QApplication, QLabel, QMainWindow, QPushButton, QVBoxLayout, QWidget) + +import asyncio +import signal +import sys + + +class MainWindow(QMainWindow): + + start_signal = Signal() + done_signal = Signal() + + def __init__(self): + super().__init__() + + widget = QWidget() + self.setCentralWidget(widget) + + layout = QVBoxLayout(widget) + + self.text = QLabel("The answer is 42.") + layout.addWidget(self.text, alignment=Qt.AlignmentFlag.AlignCenter) + + async_trigger = QPushButton(text="What is the question?") + async_trigger.clicked.connect(self.async_start) + layout.addWidget(async_trigger, alignment=Qt.AlignmentFlag.AlignCenter) + + @Slot() + def async_start(self): + self.start_signal.emit() + + async def set_text(self): + await asyncio.sleep(1) + self.text.setText("What do you get if you multiply six by nine?") + self.done_signal.emit() + + +class AsyncHelper(QObject): + + class ReenterQtObject(QObject): + """ This is a QObject to which an event will be posted, allowing + asyncio to resume when the event is handled. event.fn() is + the next entry point of the asyncio event loop. """ + def event(self, event): + if event.type() == QEvent.Type.User + 1: + event.fn() + return True + return False + + class ReenterQtEvent(QEvent): + """ This is the QEvent that will be handled by the ReenterQtObject. + self.fn is the next entry point of the asyncio event loop. """ + def __init__(self, fn): + super().__init__(QEvent.Type(QEvent.Type.User + 1)) + self.fn = fn + + def __init__(self, worker, entry): + super().__init__() + self.reenter_qt = self.ReenterQtObject() + self.entry = entry + self.loop = asyncio.new_event_loop() + self.done = False + + self.worker = worker + if hasattr(self.worker, "start_signal") and isinstance(self.worker.start_signal, Signal): + self.worker.start_signal.connect(self.on_worker_started) + if hasattr(self.worker, "done_signal") and isinstance(self.worker.done_signal, Signal): + self.worker.done_signal.connect(self.on_worker_done) + + @Slot() + def on_worker_started(self): + """ To use asyncio and Qt together, one must run the asyncio + event loop as a "guest" inside the Qt "host" event loop. """ + if not self.entry: + raise Exception("No entry point for the asyncio event loop was set.") + asyncio.set_event_loop(self.loop) + self.loop.create_task(self.entry()) + self.loop.call_soon(self.next_guest_run_schedule) + self.done = False # Set this explicitly as we might want to restart the guest run. + self.loop.run_forever() + + @Slot() + def on_worker_done(self): + """ When all our current asyncio tasks are finished, we must end + the "guest run" lest we enter a quasi idle loop of switching + back and forth between the asyncio and Qt loops. We can + launch a new guest run by calling launch_guest_run() again. """ + self.done = True + + def continue_loop(self): + """ This function is called by an event posted to the Qt event + loop to continue the asyncio event loop. """ + if not self.done: + self.loop.call_soon(self.next_guest_run_schedule) + self.loop.run_forever() + + def next_guest_run_schedule(self): + """ This function serves to pause and re-schedule the guest + (asyncio) event loop inside the host (Qt) event loop. It is + registered in asyncio as a callback to be called at the next + iteration of the event loop. When this function runs, it + first stops the asyncio event loop, then by posting an event + on the Qt event loop, it both relinquishes to Qt's event + loop and also schedules the asyncio event loop to run again. + Upon handling this event, a function will be called that + resumes the asyncio event loop. """ + self.loop.stop() + QApplication.postEvent(self.reenter_qt, self.ReenterQtEvent(self.continue_loop)) + + +if __name__ == "__main__": + app = QApplication(sys.argv) + main_window = MainWindow() + async_helper = AsyncHelper(main_window, main_window.set_text) + + main_window.show() + + signal.signal(signal.SIGINT, signal.SIG_DFL) + app.exec() diff --git a/examples/async/minimal/minimal_trio.py b/examples/async/minimal/minimal_trio.py new file mode 100644 index 000000000..5ae19fa36 --- /dev/null +++ b/examples/async/minimal/minimal_trio.py @@ -0,0 +1,107 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import (Qt, QEvent, QObject, Signal, Slot) +from PySide6.QtWidgets import (QApplication, QLabel, QMainWindow, QPushButton, QVBoxLayout, QWidget) + +import outcome +import signal +import sys +import traceback +import trio + + +class MainWindow(QMainWindow): + + start_signal = Signal() + + def __init__(self): + super().__init__() + + widget = QWidget() + self.setCentralWidget(widget) + + layout = QVBoxLayout(widget) + + self.text = QLabel("The answer is 42.") + layout.addWidget(self.text, alignment=Qt.AlignmentFlag.AlignCenter) + + async_trigger = QPushButton(text="What is the question?") + async_trigger.clicked.connect(self.async_start) + layout.addWidget(async_trigger, alignment=Qt.AlignmentFlag.AlignCenter) + + @Slot() + def async_start(self): + self.start_signal.emit() + + async def set_text(self): + await trio.sleep(1) + self.text.setText("What do you get if you multiply six by nine?") + + +class AsyncHelper(QObject): + + class ReenterQtObject(QObject): + """ This is a QObject to which an event will be posted, allowing + Trio to resume when the event is handled. event.fn() is the + next entry point of the Trio event loop. """ + def event(self, event): + if event.type() == QEvent.Type.User + 1: + event.fn() + return True + return False + + class ReenterQtEvent(QEvent): + """ This is the QEvent that will be handled by the ReenterQtObject. + self.fn is the next entry point of the Trio event loop. """ + def __init__(self, fn): + super().__init__(QEvent.Type(QEvent.Type.User + 1)) + self.fn = fn + + def __init__(self, worker, entry): + super().__init__() + self.reenter_qt = self.ReenterQtObject() + self.entry = entry + + self.worker = worker + if hasattr(self.worker, "start_signal") and isinstance(self.worker.start_signal, Signal): + self.worker.start_signal.connect(self.launch_guest_run) + + @Slot() + def launch_guest_run(self): + """ To use Trio and Qt together, one must run the Trio event + loop as a "guest" inside the Qt "host" event loop. """ + if not self.entry: + raise Exception("No entry point for the Trio guest run was set.") + trio.lowlevel.start_guest_run( + self.entry, + run_sync_soon_threadsafe=self.next_guest_run_schedule, + done_callback=self.trio_done_callback, + ) + + def next_guest_run_schedule(self, fn): + """ This function serves to re-schedule the guest (Trio) event + loop inside the host (Qt) event loop. It is called by Trio + at the end of an event loop run in order to relinquish back + to Qt's event loop. By posting an event on the Qt event loop + that contains Trio's next entry point, it ensures that Trio's + event loop will be scheduled again by Qt. """ + QApplication.postEvent(self.reenter_qt, self.ReenterQtEvent(fn)) + + def trio_done_callback(self, outcome_): + """ This function is called by Trio when its event loop has + finished. """ + if isinstance(outcome_, outcome.Error): + error = outcome_.error + traceback.print_exception(type(error), error, error.__traceback__) + + +if __name__ == "__main__": + app = QApplication(sys.argv) + main_window = MainWindow() + async_helper = AsyncHelper(main_window, main_window.set_text) + + main_window.show() + + signal.signal(signal.SIGINT, signal.SIG_DFL) + app.exec() diff --git a/examples/async/minimal/requirements_trio.txt b/examples/async/minimal/requirements_trio.txt new file mode 100644 index 000000000..ae0d704f0 --- /dev/null +++ b/examples/async/minimal/requirements_trio.txt @@ -0,0 +1 @@ +trio diff --git a/examples/bluetooth/btscanner/device.py b/examples/bluetooth/btscanner/device.py index daf0ab456..e51160b84 100644 --- a/examples/bluetooth/btscanner/device.py +++ b/examples/bluetooth/btscanner/device.py @@ -3,7 +3,7 @@ from PySide6.QtCore import QPoint, Qt, Slot from PySide6.QtGui import QColor -from PySide6.QtWidgets import QDialog, QListWidgetItem, QListWidget, QMenu +from PySide6.QtWidgets import QDialog, QListWidgetItem, QMenu from PySide6.QtBluetooth import (QBluetoothAddress, QBluetoothDeviceDiscoveryAgent, QBluetoothDeviceInfo, QBluetoothLocalDevice) @@ -88,7 +88,7 @@ class DeviceDiscoveryDialog(QDialog): else: self._local_device.setHostMode(QBluetoothLocalDevice.HostPoweredOff) - @Slot(QBluetoothLocalDevice.HostMode) + @Slot("QBluetoothLocalDevice::HostMode") def host_mode_state_changed(self, mode): self._ui.power.setChecked(mode != QBluetoothLocalDevice.HostPoweredOff) self._ui.discoverable.setChecked(mode == QBluetoothLocalDevice.HostDiscoverable) @@ -118,7 +118,7 @@ class DeviceDiscoveryDialog(QDialog): elif chosen_action == remove_pair_action: self._local_device.requestPairing(address, QBluetoothLocalDevice.Unpaired) - @Slot(QBluetoothAddress, QBluetoothLocalDevice.Pairing) + @Slot(QBluetoothAddress, "QBluetoothLocalDevice::Pairing") def pairing_done(self, address, pairing): items = self._ui.list.findItems(address.toString(), Qt.MatchContains) diff --git a/examples/bluetooth/btscanner/main.py b/examples/bluetooth/btscanner/main.py index bf8f596a3..a54a862a2 100644 --- a/examples/bluetooth/btscanner/main.py +++ b/examples/bluetooth/btscanner/main.py @@ -5,8 +5,7 @@ import sys -from PySide6.QtCore import Qt -from PySide6.QtWidgets import QApplication, QWidget +from PySide6.QtWidgets import QApplication from device import DeviceDiscoveryDialog diff --git a/examples/bluetooth/btscanner/service.py b/examples/bluetooth/btscanner/service.py index 73e174b82..31df8a9ea 100644 --- a/examples/bluetooth/btscanner/service.py +++ b/examples/bluetooth/btscanner/service.py @@ -1,7 +1,7 @@ # Copyright (C) 2022 The Qt Company Ltd. # SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause -from PySide6.QtCore import Qt, Slot +from PySide6.QtCore import Slot from PySide6.QtWidgets import QDialog from PySide6.QtBluetooth import (QBluetoothAddress, QBluetoothServiceInfo, QBluetoothServiceDiscoveryAgent, QBluetoothLocalDevice) diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/App.qml b/examples/bluetooth/heartrate_game/HeartRateGame/App.qml new file mode 100644 index 000000000..db6aa7145 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/App.qml @@ -0,0 +1,99 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick +import QtQuick.Layouts +import HeartRateGame + +Item { + id: app + + required property ConnectionHandler connectionHandler + required property DeviceFinder deviceFinder + required property DeviceHandler deviceHandler + + anchors.fill: parent + opacity: 0.0 + + Behavior on opacity { + NumberAnimation { + duration: 500 + } + } + + property int __currentIndex: 0 + + TitleBar { + id: titleBar + anchors.top: parent.top + anchors.left: parent.left + anchors.right: parent.right + currentIndex: app.__currentIndex + + onTitleClicked: (index) => { + if (index < app.__currentIndex) + app.__currentIndex = index + } + } + + StackLayout { + id: pageStack + anchors.left: parent.left + anchors.right: parent.right + anchors.top: titleBar.bottom + anchors.bottom: parent.bottom + currentIndex: app.__currentIndex + + Connect { + connectionHandler: app.connectionHandler + deviceFinder: app.deviceFinder + deviceHandler: app.deviceHandler + + onShowMeasurePage: app.__currentIndex = 1 + } + Measure { + id: measurePage + deviceHandler: app.deviceHandler + + onShowStatsPage: app.__currentIndex = 2 + } + Stats { + deviceHandler: app.deviceHandler + } + + onCurrentIndexChanged: { + if (currentIndex === 0) + measurePage.close() + } + } + + BluetoothAlarmDialog { + id: btAlarmDialog + anchors.fill: parent + visible: !app.connectionHandler.alive || permissionError + permissionError: !app.connectionHandler.hasPermission + } + + Keys.onReleased: (event) => { + switch (event.key) { + case Qt.Key_Escape: + case Qt.Key_Back: + { + if (app.__currentIndex > 0) { + app.__currentIndex = app.__currentIndex - 1 + event.accepted = true + } else { + Qt.quit() + } + break + } + default: + break + } + } + + Component.onCompleted: { + forceActiveFocus() + app.opacity = 1.0 + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/BluetoothAlarmDialog.qml b/examples/bluetooth/heartrate_game/HeartRateGame/BluetoothAlarmDialog.qml new file mode 100644 index 000000000..3687b1331 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/BluetoothAlarmDialog.qml @@ -0,0 +1,79 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Item { + id: root + + property bool permissionError: false + + anchors.fill: parent + + Rectangle { + anchors.fill: parent + color: "black" + opacity: 0.9 + } + + MouseArea { + id: eventEater + } + + Rectangle { + id: dialogFrame + + anchors.centerIn: parent + width: parent.width * 0.8 + height: parent.height * 0.6 + border.color: "#454545" + color: GameSettings.backgroundColor + radius: width * 0.05 + + Item { + id: dialogContainer + anchors.fill: parent + anchors.margins: parent.width*0.05 + + Image { + id: offOnImage + anchors.left: quitButton.left + anchors.right: quitButton.right + anchors.top: parent.top + height: GameSettings.heightForWidth(width, sourceSize) + source: "images/bt_off_to_on.png" + } + + Text { + anchors.left: parent.left + anchors.right: parent.right + anchors.top: offOnImage.bottom + anchors.bottom: quitButton.top + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + wrapMode: Text.WordWrap + font.pixelSize: GameSettings.mediumFontSize + color: GameSettings.textColor + text: root.permissionError + ? qsTr("Bluetooth permissions are not granted. Please grant the permissions in the system settings.") + : qsTr("This application cannot be used without Bluetooth. Please switch Bluetooth ON to continue.") + } + + GameButton { + id: quitButton + anchors.bottom: parent.bottom + anchors.horizontalCenter: parent.horizontalCenter + width: dialogContainer.width * 0.6 + height: GameSettings.buttonHeight + onClicked: Qt.quit() + + Text { + anchors.centerIn: parent + color: GameSettings.textColor + font.pixelSize: GameSettings.bigFontSize + text: qsTr("Quit") + } + } + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/BottomLine.qml b/examples/bluetooth/heartrate_game/HeartRateGame/BottomLine.qml new file mode 100644 index 000000000..caebc307e --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/BottomLine.qml @@ -0,0 +1,12 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Rectangle { + anchors.horizontalCenter: parent.horizontalCenter + anchors.bottom: parent.bottom + width: parent.width * 0.85 + height: parent.height * 0.05 + radius: height*0.5 +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/Connect.qml b/examples/bluetooth/heartrate_game/HeartRateGame/Connect.qml new file mode 100644 index 000000000..ca8ef2923 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/Connect.qml @@ -0,0 +1,159 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +pragma ComponentBehavior: Bound +import QtQuick +import HeartRateGame + +GamePage { + id: connectPage + + required property ConnectionHandler connectionHandler + required property DeviceFinder deviceFinder + required property DeviceHandler deviceHandler + + signal showMeasurePage + + errorMessage: deviceFinder.error + infoMessage: deviceFinder.info + + Rectangle { + id: viewContainer + anchors.top: parent.top + // only BlueZ platform has address type selection + anchors.bottom: connectPage.connectionHandler.requiresAddressType ? addressTypeButton.top + : searchButton.top + anchors.topMargin: GameSettings.fieldMargin + connectPage.messageHeight + anchors.bottomMargin: GameSettings.fieldMargin + anchors.horizontalCenter: parent.horizontalCenter + width: parent.width - GameSettings.fieldMargin * 2 + color: GameSettings.viewColor + radius: GameSettings.buttonRadius + + Text { + id: title + width: parent.width + height: GameSettings.fieldHeight + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + color: GameSettings.textColor + font.pixelSize: GameSettings.mediumFontSize + text: qsTr("FOUND DEVICES") + + BottomLine { + height: 1 + width: parent.width + color: "#898989" + } + } + + ListView { + id: devices + anchors.left: parent.left + anchors.right: parent.right + anchors.bottom: parent.bottom + anchors.top: title.bottom + model: connectPage.deviceFinder.devices + clip: true + + delegate: Rectangle { + id: box + + required property int index + required property var modelData + + height: GameSettings.fieldHeight * 1.2 + width: devices.width + color: index % 2 === 0 ? GameSettings.delegate1Color : GameSettings.delegate2Color + + MouseArea { + anchors.fill: parent + onClicked: { + connectPage.deviceFinder.connectToService(box.modelData.deviceAddress) + connectPage.showMeasurePage() + } + } + + Text { + id: device + font.pixelSize: GameSettings.smallFontSize + text: box.modelData.deviceName + anchors.top: parent.top + anchors.topMargin: parent.height * 0.1 + anchors.leftMargin: parent.height * 0.1 + anchors.left: parent.left + color: GameSettings.textColor + } + + Text { + id: deviceAddress + font.pixelSize: GameSettings.smallFontSize + text: box.modelData.deviceAddress + anchors.bottom: parent.bottom + anchors.bottomMargin: parent.height * 0.1 + anchors.rightMargin: parent.height * 0.1 + anchors.right: parent.right + color: Qt.darker(GameSettings.textColor) + } + } + } + } + + GameButton { + id: addressTypeButton + anchors.horizontalCenter: parent.horizontalCenter + anchors.bottom: searchButton.top + anchors.bottomMargin: GameSettings.fieldMargin * 0.5 + width: viewContainer.width + height: GameSettings.fieldHeight + visible: connectPage.connectionHandler.requiresAddressType // only required on BlueZ + state: "public" + onClicked: state === "public" ? state = "random" : state = "public" + + states: [ + State { + name: "public" + PropertyChanges { + addressTypeText.text: qsTr("Public Address") + } + PropertyChanges { + connectPage.deviceHandler.addressType: DeviceHandler.PUBLIC_ADDRESS + } + }, + State { + name: "random" + PropertyChanges { + addressTypeText.text: qsTr("Random Address") + } + PropertyChanges { + connectPage.deviceHandler.addressType: DeviceHandler.RANDOM_ADDRESS + } + } + ] + + Text { + id: addressTypeText + anchors.centerIn: parent + font.pixelSize: GameSettings.tinyFontSize + color: GameSettings.textColor + } + } + + GameButton { + id: searchButton + anchors.horizontalCenter: parent.horizontalCenter + anchors.bottom: parent.bottom + anchors.bottomMargin: GameSettings.fieldMargin + width: viewContainer.width + height: GameSettings.fieldHeight + enabled: !connectPage.deviceFinder.scanning + onClicked: connectPage.deviceFinder.startSearch() + + Text { + anchors.centerIn: parent + font.pixelSize: GameSettings.tinyFontSize + text: qsTr("START SEARCH") + color: searchButton.enabled ? GameSettings.textColor : GameSettings.disabledTextColor + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/GameButton.qml b/examples/bluetooth/heartrate_game/HeartRateGame/GameButton.qml new file mode 100644 index 000000000..8e8760102 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/GameButton.qml @@ -0,0 +1,39 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Rectangle { + id: button + color: baseColor + onEnabledChanged: checkColor() + radius: GameSettings.buttonRadius + + property color baseColor: GameSettings.buttonColor + property color pressedColor: GameSettings.buttonPressedColor + property color disabledColor: GameSettings.disabledButtonColor + + signal clicked + + function checkColor() { + if (!button.enabled) { + button.color = disabledColor + } else { + if (mouseArea.containsPress) + button.color = pressedColor + else + button.color = baseColor + } + } + + MouseArea { + id: mouseArea + anchors.fill: parent + onPressed: button.checkColor() + onReleased: button.checkColor() + onClicked: { + button.checkColor() + button.clicked() + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/GamePage.qml b/examples/bluetooth/heartrate_game/HeartRateGame/GamePage.qml new file mode 100644 index 000000000..249f94186 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/GamePage.qml @@ -0,0 +1,36 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Item { + id: page + + property string errorMessage: "" + property string infoMessage: "" + property real messageHeight: msg.height + property bool hasError: errorMessage != "" + property bool hasInfo: infoMessage != "" + + Rectangle { + id: msg + anchors.top: parent.top + anchors.left: parent.left + anchors.right: parent.right + height: GameSettings.fieldHeight + color: page.hasError ? GameSettings.errorColor : GameSettings.infoColor + visible: page.hasError || page.hasInfo + + Text { + id: error + anchors.fill: parent + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + minimumPixelSize: 5 + font.pixelSize: GameSettings.smallFontSize + fontSizeMode: Text.Fit + color: GameSettings.textColor + text: page.hasError ? page.errorMessage : page.infoMessage + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/GameSettings.qml b/examples/bluetooth/heartrate_game/HeartRateGame/GameSettings.qml new file mode 100644 index 000000000..0fe854609 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/GameSettings.qml @@ -0,0 +1,51 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +pragma Singleton +import QtQuick + +Item { + property int wHeight + property int wWidth + + // Colors + readonly property color backgroundColor: "#2d3037" + readonly property color buttonColor: "#202227" + readonly property color buttonPressedColor: "#6ccaf2" + readonly property color disabledButtonColor: "#555555" + readonly property color viewColor: "#202227" + readonly property color delegate1Color: Qt.darker(viewColor, 1.2) + readonly property color delegate2Color: Qt.lighter(viewColor, 1.2) + readonly property color textColor: "#ffffff" + readonly property color textDarkColor: "#232323" + readonly property color disabledTextColor: "#777777" + readonly property color sliderColor: "#6ccaf2" + readonly property color errorColor: "#ba3f62" + readonly property color infoColor: "#3fba62" + + // Font sizes + property real microFontSize: hugeFontSize * 0.2 + property real tinyFontSize: hugeFontSize * 0.4 + property real smallTinyFontSize: hugeFontSize * 0.5 + property real smallFontSize: hugeFontSize * 0.6 + property real mediumFontSize: hugeFontSize * 0.7 + property real bigFontSize: hugeFontSize * 0.8 + property real largeFontSize: hugeFontSize * 0.9 + property real hugeFontSize: (wWidth + wHeight) * 0.03 + property real giganticFontSize: (wWidth + wHeight) * 0.04 + + // Some other values + property real fieldHeight: wHeight * 0.08 + property real fieldMargin: fieldHeight * 0.5 + property real buttonHeight: wHeight * 0.08 + property real buttonRadius: buttonHeight * 0.1 + + // Some help functions + function widthForHeight(h, ss) { + return h / ss.height * ss.width + } + + function heightForWidth(w, ss) { + return w / ss.width * ss.height + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/Main.qml b/examples/bluetooth/heartrate_game/HeartRateGame/Main.qml new file mode 100644 index 000000000..e26f9b004 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/Main.qml @@ -0,0 +1,71 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +pragma ComponentBehavior: Bound +import QtQuick +import QtQuick.Window +import HeartRateGame + +Window { + id: wroot + visible: true + width: 720 * .7 + height: 1240 * .7 + title: qsTr("HeartRateGame") + color: GameSettings.backgroundColor + + required property ConnectionHandler connectionHandler + required property DeviceFinder deviceFinder + required property DeviceHandler deviceHandler + + Component.onCompleted: { + GameSettings.wWidth = Qt.binding(function () { + return width + }) + GameSettings.wHeight = Qt.binding(function () { + return height + }) + } + + Loader { + id: splashLoader + anchors.fill: parent + asynchronous: false + visible: true + + sourceComponent: SplashScreen { + appIsReady: appLoader.status === Loader.Ready + onReadyChanged: { + if (ready) { + appLoader.visible = true + splashLoader.visible = false + splashLoader.active = false + } + } + } + + onStatusChanged: { + if (status === Loader.Ready) + appLoader.active = true + } + } + + Loader { + id: appLoader + anchors.fill: parent + active: false + asynchronous: true + visible: false + + sourceComponent: App { + connectionHandler: wroot.connectionHandler + deviceFinder: wroot.deviceFinder + deviceHandler: wroot.deviceHandler + } + + onStatusChanged: { + if (status === Loader.Error) + Qt.quit() + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/Measure.qml b/examples/bluetooth/heartrate_game/HeartRateGame/Measure.qml new file mode 100644 index 000000000..48e84e762 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/Measure.qml @@ -0,0 +1,212 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick +import HeartRateGame + +GamePage { + id: measurePage + + required property DeviceHandler deviceHandler + + errorMessage: deviceHandler.error + infoMessage: deviceHandler.info + + property real __timeCounter: 0 + property real __maxTimeCount: 60 + property string relaxText: qsTr("Relax!\nWhen you are ready, press Start. You have %1s time to increase heartrate so much as possible.\nGood luck!").arg(__maxTimeCount) + + signal showStatsPage + + function close() { + deviceHandler.stopMeasurement() + deviceHandler.disconnectService() + } + + function start() { + if (!deviceHandler.measuring) { + __timeCounter = 0 + deviceHandler.startMeasurement() + } + } + + function stop() { + if (deviceHandler.measuring) + deviceHandler.stopMeasurement() + + measurePage.showStatsPage() + } + + Timer { + id: measureTimer + interval: 1000 + running: measurePage.deviceHandler.measuring + repeat: true + onTriggered: { + measurePage.__timeCounter++ + if (measurePage.__timeCounter >= measurePage.__maxTimeCount) + measurePage.stop() + } + } + + Column { + anchors.centerIn: parent + spacing: GameSettings.fieldHeight * 0.5 + + Rectangle { + id: circle + anchors.horizontalCenter: parent.horizontalCenter + width: Math.min(measurePage.width, measurePage.height - GameSettings.fieldHeight * 4) + - 2 * GameSettings.fieldMargin + height: width + radius: width * 0.5 + color: GameSettings.viewColor + + Text { + id: hintText + anchors.centerIn: parent + anchors.verticalCenterOffset: -parent.height * 0.1 + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + width: parent.width * 0.8 + height: parent.height * 0.6 + wrapMode: Text.WordWrap + text: measurePage.relaxText + visible: !measurePage.deviceHandler.measuring + color: GameSettings.textColor + fontSizeMode: Text.Fit + minimumPixelSize: 10 + font.pixelSize: GameSettings.mediumFontSize + } + + Text { + id: text + anchors.centerIn: parent + anchors.verticalCenterOffset: -parent.height * 0.15 + font.pixelSize: parent.width * 0.45 + text: measurePage.deviceHandler.hr + visible: measurePage.deviceHandler.measuring + color: GameSettings.textColor + } + + Item { + id: minMaxContainer + anchors.horizontalCenter: parent.horizontalCenter + width: parent.width * 0.7 + height: parent.height * 0.15 + anchors.bottom: parent.bottom + anchors.bottomMargin: parent.height * 0.16 + visible: measurePage.deviceHandler.measuring + + Text { + anchors.left: parent.left + anchors.verticalCenter: parent.verticalCenter + text: measurePage.deviceHandler.minHR + color: GameSettings.textColor + font.pixelSize: GameSettings.hugeFontSize + + Text { + anchors.left: parent.left + anchors.bottom: parent.top + font.pixelSize: parent.font.pixelSize * 0.8 + color: parent.color + text: "MIN" + } + } + + Text { + anchors.right: parent.right + anchors.verticalCenter: parent.verticalCenter + text: measurePage.deviceHandler.maxHR + color: GameSettings.textColor + font.pixelSize: GameSettings.hugeFontSize + + Text { + anchors.right: parent.right + anchors.bottom: parent.top + font.pixelSize: parent.font.pixelSize * 0.8 + color: parent.color + text: "MAX" + } + } + } + + Image { + id: heart + anchors.horizontalCenter: minMaxContainer.horizontalCenter + anchors.verticalCenter: minMaxContainer.bottom + width: parent.width * 0.2 + height: width + source: "images/heart.png" + smooth: true + antialiasing: true + + SequentialAnimation { + id: heartAnim + running: measurePage.deviceHandler.alive + loops: Animation.Infinite + alwaysRunToEnd: true + PropertyAnimation { + target: heart + property: "scale" + to: 1.2 + duration: 500 + easing.type: Easing.InQuad + } + PropertyAnimation { + target: heart + property: "scale" + to: 1.0 + duration: 500 + easing.type: Easing.OutQuad + } + } + } + } + + Rectangle { + id: timeSlider + color: GameSettings.viewColor + anchors.horizontalCenter: parent.horizontalCenter + width: circle.width + height: GameSettings.fieldHeight + radius: GameSettings.buttonRadius + + Rectangle { + height: parent.height + radius: parent.radius + color: GameSettings.sliderColor + width: Math.min( + 1.0, + measurePage.__timeCounter / measurePage.__maxTimeCount) * parent.width + } + + Text { + anchors.centerIn: parent + color: "gray" + text: (measurePage.__maxTimeCount - measurePage.__timeCounter).toFixed(0) + " s" + font.pixelSize: GameSettings.bigFontSize + } + } + } + + GameButton { + id: startButton + anchors.horizontalCenter: parent.horizontalCenter + anchors.bottom: parent.bottom + anchors.bottomMargin: GameSettings.fieldMargin + width: circle.width + height: GameSettings.fieldHeight + enabled: !measurePage.deviceHandler.measuring + radius: GameSettings.buttonRadius + + onClicked: measurePage.start() + + Text { + anchors.centerIn: parent + font.pixelSize: GameSettings.tinyFontSize + text: qsTr("START") + color: startButton.enabled ? GameSettings.textColor : GameSettings.disabledTextColor + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/SplashScreen.qml b/examples/bluetooth/heartrate_game/HeartRateGame/SplashScreen.qml new file mode 100644 index 000000000..2f9ac1b3f --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/SplashScreen.qml @@ -0,0 +1,30 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick +import HeartRateGame + +Item { + id: root + + property bool appIsReady: false + property bool splashIsReady: false + property bool ready: appIsReady && splashIsReady + + anchors.fill: parent + + Image { + anchors.centerIn: parent + width: Math.min(parent.height, parent.width) * 0.6 + height: GameSettings.heightForWidth(width, sourceSize) + source: "images/logo.png" + } + + Timer { + id: splashTimer + interval: 1000 + onTriggered: splashIsReady = true + } + + Component.onCompleted: splashTimer.start() +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/Stats.qml b/examples/bluetooth/heartrate_game/HeartRateGame/Stats.qml new file mode 100644 index 000000000..22cdd5365 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/Stats.qml @@ -0,0 +1,55 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick +import HeartRateGame + +GamePage { + id: statsPage + + required property DeviceHandler deviceHandler + + Column { + anchors.centerIn: parent + width: parent.width + + Text { + anchors.horizontalCenter: parent.horizontalCenter + font.pixelSize: GameSettings.hugeFontSize + color: GameSettings.textColor + text: qsTr("RESULT") + } + + Text { + anchors.horizontalCenter: parent.horizontalCenter + font.pixelSize: GameSettings.giganticFontSize * 3 + color: GameSettings.textColor + text: (statsPage.deviceHandler.maxHR - statsPage.deviceHandler.minHR).toFixed(0) + } + + Item { + height: GameSettings.fieldHeight + width: 1 + } + + StatsLabel { + title: qsTr("MIN") + value: statsPage.deviceHandler.minHR.toFixed(0) + } + + StatsLabel { + title: qsTr("MAX") + value: statsPage.deviceHandler.maxHR.toFixed(0) + } + + StatsLabel { + title: qsTr("AVG") + value: statsPage.deviceHandler.average.toFixed(1) + } + + StatsLabel { + title: qsTr("CALORIES") + value: statsPage.deviceHandler.calories.toFixed(3) + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/StatsLabel.qml b/examples/bluetooth/heartrate_game/HeartRateGame/StatsLabel.qml new file mode 100644 index 000000000..0ea4249a7 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/StatsLabel.qml @@ -0,0 +1,34 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Item { + height: GameSettings.fieldHeight + width: parent.width + + property alias title: leftText.text + property alias value: rightText.text + + Text { + id: leftText + anchors.left: parent.left + height: parent.height + width: parent.width * 0.45 + horizontalAlignment: Text.AlignRight + verticalAlignment: Text.AlignVCenter + font.pixelSize: GameSettings.mediumFontSize + color: GameSettings.textColor + } + + Text { + id: rightText + anchors.right: parent.right + height: parent.height + width: parent.width * 0.45 + horizontalAlignment: Text.AlignLeft + verticalAlignment: Text.AlignVCenter + font.pixelSize: GameSettings.mediumFontSize + color: GameSettings.textColor + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/TitleBar.qml b/examples/bluetooth/heartrate_game/HeartRateGame/TitleBar.qml new file mode 100644 index 000000000..016a44358 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/TitleBar.qml @@ -0,0 +1,54 @@ +// Copyright (C) 2022 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +pragma ComponentBehavior: Bound +import QtQuick + +Rectangle { + id: titleBar + + property var __titles: ["CONNECT", "MEASURE", "STATS"] + property int currentIndex: 0 + + signal titleClicked(int index) + + height: GameSettings.fieldHeight + color: GameSettings.viewColor + + Repeater { + model: 3 + Text { + id: caption + required property int index + width: titleBar.width / 3 + height: titleBar.height + x: index * width + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + text: titleBar.__titles[index] + font.pixelSize: GameSettings.tinyFontSize + color: titleBar.currentIndex === index ? GameSettings.textColor + : GameSettings.disabledTextColor + + MouseArea { + anchors.fill: parent + onClicked: titleBar.titleClicked(caption.index) + } + } + } + + Item { + anchors.bottom: parent.bottom + width: parent.width / 3 + height: parent.height + x: titleBar.currentIndex * width + + BottomLine {} + + Behavior on x { + NumberAnimation { + duration: 200 + } + } + } +} diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/images/bt_off_to_on.png b/examples/bluetooth/heartrate_game/HeartRateGame/images/bt_off_to_on.png Binary files differnew file mode 100644 index 000000000..5ea1f3f06 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/images/bt_off_to_on.png diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/images/heart.png b/examples/bluetooth/heartrate_game/HeartRateGame/images/heart.png Binary files differnew file mode 100644 index 000000000..f2b3c0a3e --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/images/heart.png diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/images/logo.png b/examples/bluetooth/heartrate_game/HeartRateGame/images/logo.png Binary files differnew file mode 100644 index 000000000..ea0af7e00 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/images/logo.png diff --git a/examples/bluetooth/heartrate_game/HeartRateGame/qmldir b/examples/bluetooth/heartrate_game/HeartRateGame/qmldir new file mode 100644 index 000000000..2baa74a92 --- /dev/null +++ b/examples/bluetooth/heartrate_game/HeartRateGame/qmldir @@ -0,0 +1,14 @@ +module HeartRateGame +App 1.0 App.qml +BluetoothAlarmDialog 1.0 BluetoothAlarmDialog.qml +BottomLine 1.0 BottomLine.qml +Connect 1.0 Connect.qml +GameButton 1.0 GameButton.qml +GamePage 1.0 GamePage.qml +singleton GameSettings 1.0 GameSettings.qml +Measure 1.0 Measure.qml +SplashScreen 1.0 SplashScreen.qml +Stats 1.0 Stats.qml +StatsLabel 1.0 StatsLabel.qml +TitleBar 1.0 TitleBar.qml +Main 1.0 Main.qml diff --git a/examples/bluetooth/heartrate_game/bluetoothbaseclass.py b/examples/bluetooth/heartrate_game/bluetoothbaseclass.py new file mode 100644 index 000000000..cc5c9dbd0 --- /dev/null +++ b/examples/bluetooth/heartrate_game/bluetoothbaseclass.py @@ -0,0 +1,40 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import QObject, Property, Signal, Slot + + +class BluetoothBaseClass(QObject): + + errorChanged = Signal() + infoChanged = Signal() + + def __init__(self, parent=None): + super().__init__(parent) + self.m_error = "" + self.m_info = "" + + @Property(str, notify=errorChanged) + def error(self): + return self.m_error + + @error.setter + def error(self, e): + if self.m_error != e: + self.m_error = e + self.errorChanged.emit() + + @Property(str, notify=infoChanged) + def info(self): + return self.m_info + + @info.setter + def info(self, i): + if self.m_info != i: + self.m_info = i + self.infoChanged.emit() + + @Slot() + def clearMessages(self): + self.info = "" + self.error = "" diff --git a/examples/bluetooth/heartrate_game/connectionhandler.py b/examples/bluetooth/heartrate_game/connectionhandler.py new file mode 100644 index 000000000..79f2720e7 --- /dev/null +++ b/examples/bluetooth/heartrate_game/connectionhandler.py @@ -0,0 +1,76 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import sys + +from PySide6.QtBluetooth import QBluetoothLocalDevice +from PySide6.QtQml import QmlElement +from PySide6.QtCore import QObject, Property, Signal, Slot, Qt, QCoreApplication + +from heartrate_global import simulator, is_android + +if is_android: + from PySide6.QtCore import QBluetoothPermission + +# To be used on the @QmlElement decorator +# (QML_IMPORT_MINOR_VERSION is optional) +QML_IMPORT_NAME = "HeartRateGame" +QML_IMPORT_MAJOR_VERSION = 1 + + +@QmlElement +class ConnectionHandler(QObject): + + deviceChanged = Signal() + + def __init__(self, parent=None): + super().__init__(parent) + self.m_hasPermission = False + self.initLocalDevice() + + @Property(bool, notify=deviceChanged) + def alive(self): + if sys.platform == "darwin": + return True + if simulator(): + return True + return (self.m_localDevice.isValid() + and self.m_localDevice.hostMode() != QBluetoothLocalDevice.HostPoweredOff) + + @Property(bool, constant=True) + def requiresAddressType(self): + return sys.platform == "linux" # QT_CONFIG(bluez)? + + @Property(str, notify=deviceChanged) + def name(self): + return self.m_localDevice.name() + + @Property(str, notify=deviceChanged) + def address(self): + return self.m_localDevice.address().toString() + + @Property(bool, notify=deviceChanged) + def hasPermission(self): + return self.m_hasPermission + + @Slot(QBluetoothLocalDevice.HostMode) + def hostModeChanged(self, mode): + self.deviceChanged.emit() + + def initLocalDevice(self): + if is_android: + permission = QBluetoothPermission() + permission.setCommunicationModes(QBluetoothPermission.Access) + permission_status = qApp.checkPermission(permission) + if permission_status == Qt.PermissionStatus.Undetermined: + qApp.requestPermission(permission, self, self.initLocalDevice) + return + if permission_status == Qt.PermissionStatus.Denied: + return + elif permission_status == Qt.PermissionStatus.Granted: + print("[HeartRateGame] Bluetooth Permission Granted") + + self.m_localDevice = QBluetoothLocalDevice() + self.m_localDevice.hostModeStateChanged.connect(self.hostModeChanged) + self.m_hasPermission = True + self.deviceChanged.emit() diff --git a/examples/bluetooth/heartrate_game/devicefinder.py b/examples/bluetooth/heartrate_game/devicefinder.py new file mode 100644 index 000000000..db42c2fa4 --- /dev/null +++ b/examples/bluetooth/heartrate_game/devicefinder.py @@ -0,0 +1,137 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtBluetooth import (QBluetoothDeviceDiscoveryAgent, + QBluetoothDeviceInfo) +from PySide6.QtQml import QmlElement +from PySide6.QtCore import QTimer, Property, Signal, Slot, Qt, QCoreApplication + +from bluetoothbaseclass import BluetoothBaseClass +from deviceinfo import DeviceInfo +from heartrate_global import simulator, is_android + +if is_android: + from PySide6.QtCore import QBluetoothPermission + +# To be used on the @QmlElement decorator +# (QML_IMPORT_MINOR_VERSION is optional) +QML_IMPORT_NAME = "HeartRateGame" +QML_IMPORT_MAJOR_VERSION = 1 + + +@QmlElement +class DeviceFinder(BluetoothBaseClass): + + scanningChanged = Signal() + devicesChanged = Signal() + + def __init__(self, handler, parent=None): + super().__init__(parent) + self.m_deviceHandler = handler + self.m_devices = [] + self.m_demoTimer = QTimer() +#! [devicediscovery-1] + self.m_deviceDiscoveryAgent = QBluetoothDeviceDiscoveryAgent(self) + self.m_deviceDiscoveryAgent.setLowEnergyDiscoveryTimeout(15000) + self.m_deviceDiscoveryAgent.deviceDiscovered.connect(self.addDevice) + self.m_deviceDiscoveryAgent.errorOccurred.connect(self.scanError) + + self.m_deviceDiscoveryAgent.finished.connect(self.scanFinished) + self.m_deviceDiscoveryAgent.canceled.connect(self.scanFinished) +#! [devicediscovery-1] + if simulator(): + self.m_demoTimer.setSingleShot(True) + self.m_demoTimer.setInterval(2000) + self.m_demoTimer.timeout.connect(self.scanFinished) + + @Slot() + def startSearch(self): + if is_android: + permission = QBluetoothPermission() + permission.setCommunicationModes(QBluetoothPermission.Access) + permission_status = qApp.checkPermission(permission) + if permission_status == Qt.PermissionStatus.Undetermined: + qApp.requestPermission(permission, self, self.startSearch) + return + elif permission_status == Qt.PermissionStatus.Denied: + return + elif permission_status == Qt.PermissionStatus.Granted: + print("[HeartRateGame] Bluetooth Permission Granted") + + self.clearMessages() + self.m_deviceHandler.setDevice(None) + self.m_devices.clear() + + self.devicesChanged.emit() + + if simulator(): + self.m_demoTimer.start() + else: +#! [devicediscovery-2] + self.m_deviceDiscoveryAgent.start(QBluetoothDeviceDiscoveryAgent.LowEnergyMethod) +#! [devicediscovery-2] + self.scanningChanged.emit() + self.info = "Scanning for devices..." + +#! [devicediscovery-3] + @Slot(QBluetoothDeviceInfo) + def addDevice(self, device): + # If device is LowEnergy-device, add it to the list + if device.coreConfigurations() & QBluetoothDeviceInfo.LowEnergyCoreConfiguration: + self.m_devices.append(DeviceInfo(device)) + self.info = "Low Energy device found. Scanning more..." +#! [devicediscovery-3] + self.devicesChanged.emit() +#! [devicediscovery-4] + #... +#! [devicediscovery-4] + + @Slot(QBluetoothDeviceDiscoveryAgent.Error) + def scanError(self, error): + if error == QBluetoothDeviceDiscoveryAgent.PoweredOffError: + self.error = "The Bluetooth adaptor is powered off." + elif error == QBluetoothDeviceDiscoveryAgent.InputOutputError: + self.error = "Writing or reading from the device resulted in an error." + else: + self.error = "An unknown error has occurred." + + @Slot() + def scanFinished(self): + if simulator(): + # Only for testing + for i in range(5): + self.m_devices.append(DeviceInfo(QBluetoothDeviceInfo())) + + if self.m_devices: + self.info = "Scanning done." + else: + self.error = "No Low Energy devices found." + + self.scanningChanged.emit() + self.devicesChanged.emit() + + @Slot(str) + def connectToService(self, address): + self.m_deviceDiscoveryAgent.stop() + + currentDevice = None + for entry in self.m_devices: + device = entry + if device and device.deviceAddress == address: + currentDevice = device + break + + if currentDevice: + self.m_deviceHandler.setDevice(currentDevice) + + self.clearMessages() + + @Property(bool, notify=scanningChanged) + def scanning(self): + if simulator(): + return self.m_demoTimer.isActive() + return self.m_deviceDiscoveryAgent.isActive() + + @Property("QVariant", notify=devicesChanged) + def devices(self): + return self.m_devices diff --git a/examples/bluetooth/heartrate_game/devicehandler.py b/examples/bluetooth/heartrate_game/devicehandler.py new file mode 100644 index 000000000..85d160c4d --- /dev/null +++ b/examples/bluetooth/heartrate_game/devicehandler.py @@ -0,0 +1,306 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import struct + +from enum import IntEnum + +from PySide6.QtBluetooth import (QLowEnergyCharacteristic, + QLowEnergyController, + QLowEnergyDescriptor, + QLowEnergyService, + QBluetoothUuid) +from PySide6.QtQml import QmlElement +from PySide6.QtCore import (QByteArray, QDateTime, QRandomGenerator, QTimer, + Property, Signal, Slot, QEnum) + +from bluetoothbaseclass import BluetoothBaseClass +from heartrate_global import simulator + + +# To be used on the @QmlElement decorator +# (QML_IMPORT_MINOR_VERSION is optional) +QML_IMPORT_NAME = "HeartRateGame" +QML_IMPORT_MAJOR_VERSION = 1 + + +@QmlElement +class DeviceHandler(BluetoothBaseClass): + + @QEnum + class AddressType(IntEnum): + PUBLIC_ADDRESS = 1 + RANDOM_ADDRESS = 2 + + measuringChanged = Signal() + aliveChanged = Signal() + statsChanged = Signal() + + def __init__(self, parent=None): + super().__init__(parent) + + self.m_control = None + self.m_service = None + self.m_notificationDesc = QLowEnergyDescriptor() + self.m_currentDevice = None + + self.m_foundHeartRateService = False + self.m_measuring = False + self.m_currentValue = 0 + self.m_min = 0 + self.m_max = 0 + self.m_sum = 0 + self.m_avg = 0.0 + self.m_calories = 0.0 + + self.m_start = QDateTime() + self.m_stop = QDateTime() + + self.m_measurements = [] + self.m_addressType = QLowEnergyController.PublicAddress + + self.m_demoTimer = QTimer() + + if simulator(): + self.m_demoTimer.setSingleShot(False) + self.m_demoTimer.setInterval(2000) + self.m_demoTimer.timeout.connect(self.updateDemoHR) + self.m_demoTimer.start() + self.updateDemoHR() + + @Property(int) + def addressType(self): + if self.m_addressType == QLowEnergyController.RandomAddress: + return DeviceHandler.AddressType.RANDOM_ADDRESS + return DeviceHandler.AddressType.PUBLIC_ADDRESS + + @addressType.setter + def addressType(self, type): + if type == DeviceHandler.AddressType.PUBLIC_ADDRESS: + self.m_addressType = QLowEnergyController.PublicAddress + elif type == DeviceHandler.AddressType.RANDOM_ADDRESS: + self.m_addressType = QLowEnergyController.RandomAddress + + @Slot(QLowEnergyController.Error) + def controllerErrorOccurred(self, device): + self.error = "Cannot connect to remote device." + + @Slot() + def controllerConnected(self): + self.info = "Controller connected. Search services..." + self.m_control.discoverServices() + + @Slot() + def controllerDisconnected(self): + self.error = "LowEnergy controller disconnected" + + def setDevice(self, device): + self.clearMessages() + self.m_currentDevice = device + + if simulator(): + self.info = "Demo device connected." + return + + # Disconnect and delete old connection + if self.m_control: + self.m_control.disconnectFromDevice() + m_control = None + + # Create new controller and connect it if device available + if self.m_currentDevice: + + # Make connections +#! [Connect-Signals-1] + self.m_control = QLowEnergyController.createCentral(self.m_currentDevice.device(), self) +#! [Connect-Signals-1] + self.m_control.setRemoteAddressType(self.m_addressType) +#! [Connect-Signals-2] + + self.m_control.serviceDiscovered.connect(self.serviceDiscovered) + self.m_control.discoveryFinished.connect(self.serviceScanDone) + + self.m_control.errorOccurred.connect(self.controllerErrorOccurred) + self.m_control.connected.connect(self.controllerConnected) + self.m_control.disconnected.connect(self.controllerDisconnected) + + # Connect + self.m_control.connectToDevice() +#! [Connect-Signals-2] + + @Slot() + def startMeasurement(self): + if self.alive: + self.m_start = QDateTime.currentDateTime() + self.m_min = 0 + self.m_max = 0 + self.m_avg = 0 + self.m_sum = 0 + self.m_calories = 0.0 + self.m_measuring = True + self.m_measurements.clear() + self.measuringChanged.emit() + + @Slot() + def stopMeasurement(self): + self.m_measuring = False + self.measuringChanged.emit() + +#! [Filter HeartRate service 1] + @Slot(QBluetoothUuid) + def serviceDiscovered(self, gatt): + if gatt == QBluetoothUuid(QBluetoothUuid.ServiceClassUuid.HeartRate): + self.info = "Heart Rate service discovered. Waiting for service scan to be done..." + self.m_foundHeartRateService = True + +#! [Filter HeartRate service 1] + + @Slot() + def serviceScanDone(self): + self.info = "Service scan done." + + # Delete old service if available + if self.m_service: + self.m_service = None + +#! [Filter HeartRate service 2] + # If heartRateService found, create new service + if self.m_foundHeartRateService: + self.m_service = self.m_control.createServiceObject(QBluetoothUuid(QBluetoothUuid.ServiceClassUuid.HeartRate), self) + + if self.m_service: + self.m_service.stateChanged.connect(self.serviceStateChanged) + self.m_service.characteristicChanged.connect(self.updateHeartRateValue) + self.m_service.descriptorWritten.connect(self.confirmedDescriptorWrite) + self.m_service.discoverDetails() + else: + self.error = "Heart Rate Service not found." +#! [Filter HeartRate service 2] + +# Service functions +#! [Find HRM characteristic] + @Slot(QLowEnergyService.ServiceState) + def serviceStateChanged(self, switch): + if switch == QLowEnergyService.RemoteServiceDiscovering: + self.info = "Discovering services..." + elif switch == QLowEnergyService.RemoteServiceDiscovered: + self.info = "Service discovered." + hrChar = self.m_service.characteristic(QBluetoothUuid(QBluetoothUuid.CharacteristicType.HeartRateMeasurement)) + if hrChar.isValid(): + self.m_notificationDesc = hrChar.descriptor(QBluetoothUuid.DescriptorType.ClientCharacteristicConfiguration) + if self.m_notificationDesc.isValid(): + self.m_service.writeDescriptor(self.m_notificationDesc, + QByteArray.fromHex(b"0100")) + else: + self.error = "HR Data not found." + self.aliveChanged.emit() +#! [Find HRM characteristic] + +#! [Reading value] + @Slot(QLowEnergyCharacteristic, QByteArray) + def updateHeartRateValue(self, c, value): + # ignore any other characteristic change. Shouldn't really happen though + if c.uuid() != QBluetoothUuid(QBluetoothUuid.CharacteristicType.HeartRateMeasurement): + return + + data = value.data() + flags = int(data[0]) + # Heart Rate + hrvalue = 0 + if flags & 0x1: # HR 16 bit little endian? otherwise 8 bit + hrvalue = struct.unpack("<H", data[1:3])[0] + else: + hrvalue = struct.unpack("B", data[1:2])[0] + + self.addMeasurement(hrvalue) + +#! [Reading value] + @Slot() + def updateDemoHR(self): + randomValue = 0 + if self.m_currentValue < 30: # Initial value + randomValue = 55 + QRandomGenerator.global_().bounded(30) + elif not self.m_measuring: # Value when relax + random = QRandomGenerator.global_().bounded(5) + randomValue = self.m_currentValue - 2 + random + randomValue = max(min(randomValue, 55), 75) + else: # Measuring + random = QRandomGenerator.global_().bounded(10) + randomValue = self.m_currentValue + random - 2 + + self.addMeasurement(randomValue) + + @Slot(QLowEnergyCharacteristic, QByteArray) + def confirmedDescriptorWrite(self, d, value): + if (d.isValid() and d == self.m_notificationDesc + and value == QByteArray.fromHex(b"0000")): + # disabled notifications . assume disconnect intent + self.m_control.disconnectFromDevice() + self.m_service = None + + @Slot() + def disconnectService(self): + self.m_foundHeartRateService = False + + # disable notifications + if (self.m_notificationDesc.isValid() and self.m_service + and self.m_notificationDesc.value() == QByteArray.fromHex(b"0100")): + self.m_service.writeDescriptor(self.m_notificationDesc, + QByteArray.fromHex(b"0000")) + else: + if self.m_control: + self.m_control.disconnectFromDevice() + self.m_service = None + + @Property(bool, notify=measuringChanged) + def measuring(self): + return self.m_measuring + + @Property(bool, notify=aliveChanged) + def alive(self): + if simulator(): + return True + if self.m_service: + return self.m_service.state() == QLowEnergyService.RemoteServiceDiscovered + return False + + @Property(int, notify=statsChanged) + def hr(self): + return self.m_currentValue + + @Property(int, notify=statsChanged) + def time(self): + return self.m_start.secsTo(self.m_stop) + + @Property(int, notify=statsChanged) + def maxHR(self): + return self.m_max + + @Property(int, notify=statsChanged) + def minHR(self): + return self.m_min + + @Property(float, notify=statsChanged) + def average(self): + return self.m_avg + + @Property(float, notify=statsChanged) + def calories(self): + return self.m_calories + + def addMeasurement(self, value): + self.m_currentValue = value + + # If measuring and value is appropriate + if self.m_measuring and value > 30 and value < 250: + self.m_stop = QDateTime.currentDateTime() + self.m_measurements.append(value) + + self.m_min = value if self.m_min == 0 else min(value, self.m_min) + self.m_max = max(value, self.m_max) + self.m_sum += value + self.m_avg = float(self.m_sum) / len(self.m_measurements) + self.m_calories = ((-55.0969 + (0.6309 * self.m_avg) + (0.1988 * 94) + + (0.2017 * 24)) / 4.184) * 60 * self.time / 3600 + + self.statsChanged.emit() diff --git a/examples/bluetooth/heartrate_game/deviceinfo.py b/examples/bluetooth/heartrate_game/deviceinfo.py new file mode 100644 index 000000000..5fd5c3270 --- /dev/null +++ b/examples/bluetooth/heartrate_game/deviceinfo.py @@ -0,0 +1,38 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import sys + +from PySide6.QtCore import QObject, Property, Signal + +from heartrate_global import simulator + + +class DeviceInfo(QObject): + + deviceChanged = Signal() + + def __init__(self, device): + super().__init__() + self.m_device = device + + def device(self): + return self.m_device + + def setDevice(self, device): + self.m_device = device + self.deviceChanged.emit() + + @Property(str, notify=deviceChanged) + def deviceName(self): + if simulator(): + return "Demo device" + return self.m_device.name() + + @Property(str, notify=deviceChanged) + def deviceAddress(self): + if simulator(): + return "00:11:22:33:44:55" + if sys.platform == "Darwin": # workaround for Core Bluetooth: + return self.m_device.deviceUuid().toString() + return self.m_device.address().toString() diff --git a/examples/bluetooth/heartrate_game/doc/heartrate_game.rst b/examples/bluetooth/heartrate_game/doc/heartrate_game.rst new file mode 100644 index 000000000..0a0938cad --- /dev/null +++ b/examples/bluetooth/heartrate_game/doc/heartrate_game.rst @@ -0,0 +1,9 @@ +Bluetooth Low Energy Heart Rate Game +==================================== + +The Bluetooth Low Energy Heart Rate Game shows how to develop a +Bluetooth Low Energy application using the Qt Bluetooth API. The +application covers the scanning for Bluetooth Low Energy devices, +connecting to a Heart Rate service on the device, writing +characteristics and descriptors, and receiving updates from the device +once the heart rate has changed. diff --git a/examples/bluetooth/heartrate_game/heartrate_game.pyproject b/examples/bluetooth/heartrate_game/heartrate_game.pyproject new file mode 100644 index 000000000..94b7e3978 --- /dev/null +++ b/examples/bluetooth/heartrate_game/heartrate_game.pyproject @@ -0,0 +1,23 @@ +{ + "files": ["main.py", + "bluetoothbaseclass.py", + "connectionhandler.py", + "devicefinder.py", + "devicehandler.py", + "deviceinfo.py", + "heartrate_global.py", + "HeartRateGame/qmldir", + "HeartRateGame/Main.qml", + "HeartRateGame/App.qml", + "HeartRateGame/BluetoothAlarmDialog.qml", + "HeartRateGame/BottomLine.qml", + "HeartRateGame/Connect.qml", + "HeartRateGame/GameButton.qml", + "HeartRateGame/GamePage.qml", + "HeartRateGame/GameSettings.qml", + "HeartRateGame/Measure.qml", + "HeartRateGame/SplashScreen.qml", + "HeartRateGame/Stats.qml", + "HeartRateGame/StatsLabel.qml", + "HeartRateGame/TitleBar.qml"] +} diff --git a/examples/bluetooth/heartrate_game/heartrate_global.py b/examples/bluetooth/heartrate_game/heartrate_global.py new file mode 100644 index 000000000..dec6f83a3 --- /dev/null +++ b/examples/bluetooth/heartrate_game/heartrate_global.py @@ -0,0 +1,19 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause +import os +import sys + + +_simulator = False + + +def simulator(): + global _simulator + return _simulator + + +def set_simulator(s): + global _simulator + _simulator = s + +is_android = os.environ.get('ANDROID_ARGUMENT') diff --git a/examples/bluetooth/heartrate_game/main.py b/examples/bluetooth/heartrate_game/main.py new file mode 100644 index 000000000..3cb4f0672 --- /dev/null +++ b/examples/bluetooth/heartrate_game/main.py @@ -0,0 +1,53 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the bluetooth/heartrate-game example from Qt v6.x""" + +from pathlib import Path +import sys +from argparse import ArgumentParser, RawDescriptionHelpFormatter + +from PySide6.QtQml import QQmlApplicationEngine +from PySide6.QtGui import QGuiApplication +from PySide6.QtCore import QCoreApplication, QLoggingCategory + +from connectionhandler import ConnectionHandler +from devicefinder import DeviceFinder +from devicehandler import DeviceHandler +from heartrate_global import set_simulator + + +if __name__ == '__main__': + parser = ArgumentParser(prog="heartrate-game", + formatter_class=RawDescriptionHelpFormatter) + + parser.add_argument("-v", "--verbose", action="store_true", + help="Generate more output") + parser.add_argument("-s", "--simulator", action="store_true", + help="Use Simulator") + options = parser.parse_args() + set_simulator(options.simulator) + if options.verbose: + QLoggingCategory.setFilterRules("qt.bluetooth* = true") + + app = QGuiApplication(sys.argv) + + connectionHandler = ConnectionHandler() + deviceHandler = DeviceHandler() + deviceFinder = DeviceFinder(deviceHandler) + + engine = QQmlApplicationEngine() + engine.setInitialProperties({ + "connectionHandler": connectionHandler, + "deviceFinder": deviceFinder, + "deviceHandler": deviceHandler}) + + engine.addImportPath(Path(__file__).parent) + engine.loadFromModule("HeartRateGame", "Main") + + if not engine.rootObjects(): + sys.exit(-1) + + ex = QCoreApplication.exec() + del engine + sys.exit(ex) diff --git a/examples/bluetooth/heartrate_server/doc/heartrate_server.rst b/examples/bluetooth/heartrate_server/doc/heartrate_server.rst new file mode 100644 index 000000000..aaa1a0988 --- /dev/null +++ b/examples/bluetooth/heartrate_server/doc/heartrate_server.rst @@ -0,0 +1,8 @@ +Bluetooth Low Energy Heart Rate Server +====================================== + +The Bluetooth Low Energy Heart Rate Server is a command-line +application that shows how to develop a Bluetooth GATT server using +the Qt Bluetooth API. The application covers setting up a GATT +service, advertising it and notifying clients about changes to +characteristic values. diff --git a/examples/bluetooth/heartrate_server/heartrate_server.py b/examples/bluetooth/heartrate_server/heartrate_server.py new file mode 100644 index 000000000..f98cc6fe8 --- /dev/null +++ b/examples/bluetooth/heartrate_server/heartrate_server.py @@ -0,0 +1,94 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the bluetooth/heartrate-server example from Qt v6.x""" + +import sys +from enum import Enum + +from PySide6.QtBluetooth import (QBluetoothUuid, QLowEnergyAdvertisingData, + QLowEnergyAdvertisingParameters, + QLowEnergyCharacteristic, + QLowEnergyCharacteristicData, + QLowEnergyController, + QLowEnergyDescriptorData, + QLowEnergyServiceData) +from PySide6.QtGui import QGuiApplication +from PySide6.QtCore import QByteArray, QTimer, QLoggingCategory + + +class ValueChange(Enum): + VALUE_UP = 1 + VALUE_DOWN = 2 + + +if __name__ == '__main__': + app = QGuiApplication(sys.argv) + QLoggingCategory.setFilterRules("qt.bluetooth* = true") + +#! [Advertising Data] + advertising_data = QLowEnergyAdvertisingData() + advertising_data.setDiscoverability(QLowEnergyAdvertisingData.DiscoverabilityGeneral) + advertising_data.setIncludePowerLevel(True) + advertising_data.setLocalName("HeartRateServer") + advertising_data.setServices([QBluetoothUuid.ServiceClassUuid.HeartRate]) +#! [Advertising Data] + +#! [Service Data] + char_data = QLowEnergyCharacteristicData() + char_data.setUuid(QBluetoothUuid.CharacteristicType.HeartRateMeasurement) + char_data.setValue(QByteArray(2, 0)) + char_data.setProperties(QLowEnergyCharacteristic.Notify) + client_config = QLowEnergyDescriptorData(QBluetoothUuid.DescriptorType.ClientCharacteristicConfiguration, + QByteArray(2, 0)) + char_data.addDescriptor(client_config) + + service_data = QLowEnergyServiceData() + service_data.setType(QLowEnergyServiceData.ServiceTypePrimary) + service_data.setUuid(QBluetoothUuid.ServiceClassUuid.HeartRate) + service_data.addCharacteristic(char_data) +#! [Service Data] + +#! [Start Advertising] + le_controller = QLowEnergyController.createPeripheral() + service = le_controller.addService(service_data) + le_controller.startAdvertising(QLowEnergyAdvertisingParameters(), + advertising_data, advertising_data) +#! [Start Advertising] + +#! [Provide Heartbeat] + value_change = ValueChange.VALUE_UP + heartbeat_timer = QTimer() + current_heart_rate = 60 + + def heartbeat_provider(): + global current_heart_rate, value_change, current_heart_rate + value = QByteArray() + value.append(chr(0)) # Flags that specify the format of the value. + value.append(chr(current_heart_rate)) # Actual value. + characteristic = service.characteristic(QBluetoothUuid.CharacteristicType.HeartRateMeasurement) + assert(characteristic.isValid()) + # Potentially causes notification. + service.writeCharacteristic(characteristic, value) + if current_heart_rate == 60: + value_change = ValueChange.VALUE_UP + elif current_heart_rate == 100: + value_change = ValueChange.VALUE_DOWN + if value_change == ValueChange.VALUE_UP: + current_heart_rate += 1 + else: + current_heart_rate -= 1 + + heartbeat_timer.timeout.connect(heartbeat_provider) + heartbeat_timer.start(1000) +#! [Provide Heartbeat] + + def reconnect(): + service = le_controller.addService(service_data) + if not service.isNull(): + le_controller.startAdvertising(QLowEnergyAdvertisingParameters(), + advertising_data, advertising_data) + + le_controller.disconnected.connect(reconnect) + + sys.exit(app.exec()) diff --git a/examples/bluetooth/heartrate_server/heartrate_server.pyproject b/examples/bluetooth/heartrate_server/heartrate_server.pyproject new file mode 100644 index 000000000..de1fd14a0 --- /dev/null +++ b/examples/bluetooth/heartrate_server/heartrate_server.pyproject @@ -0,0 +1,3 @@ +{ + "files": ["heartrate_server.py"] +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Characteristics.qml b/examples/bluetooth/lowenergyscanner/Scanner/Characteristics.qml new file mode 100644 index 000000000..bd3ccbfcb --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Characteristics.qml @@ -0,0 +1,121 @@ +// Copyright (C) 2013 BlackBerry Limited. All rights reserved. +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +pragma ComponentBehavior: Bound +import QtQuick + +Rectangle { + id: characteristicsPage + + signal showServices + signal showDevices + + width: 300 + height: 600 + + Header { + id: header + anchors.top: parent.top + headerText: "Characteristics list" + } + + Dialog { + id: info + anchors.centerIn: parent + visible: true + dialogText: "Scanning for characteristics..." + } + + Connections { + target: Device + function oncharacteristics_pdated() { + menu.menuText = "Back" + if (characteristicview.count === 0) { + info.dialogText = "No characteristic found" + info.busyImage = false + } else { + info.visible = false + info.busyImage = true + } + } + + function onDisconnected() { + characteristicsPage.showDevices() + } + } + + ListView { + id: characteristicview + width: parent.width + clip: true + + anchors.top: header.bottom + anchors.bottom: menu.top + model: Device.characteristicList + + delegate: Rectangle { + required property var modelData + id: box + height: 300 + width: characteristicview.width + color: "lightsteelblue" + border.width: 2 + border.color: "black" + radius: 5 + + Label { + id: characteristicName + textContent: box.modelData.characteristic_name + anchors.top: parent.top + anchors.topMargin: 5 + } + + Label { + id: characteristicUuid + font.pointSize: characteristicName.font.pointSize * 0.7 + textContent: box.modelData.characteristic_uuid + anchors.top: characteristicName.bottom + anchors.topMargin: 5 + } + + Label { + id: characteristicValue + font.pointSize: characteristicName.font.pointSize * 0.7 + textContent: ("Value: " + box.modelData.characteristic_value) + anchors.bottom: characteristicHandle.top + horizontalAlignment: Text.AlignHCenter + anchors.topMargin: 5 + } + + Label { + id: characteristicHandle + font.pointSize: characteristicName.font.pointSize * 0.7 + textContent: ("Handlers: " + box.modelData.characteristic_handle) + anchors.bottom: characteristicPermission.top + anchors.topMargin: 5 + } + + Label { + id: characteristicPermission + font.pointSize: characteristicName.font.pointSize * 0.7 + textContent: box.modelData.characteristic_permission + anchors.bottom: parent.bottom + anchors.topMargin: 5 + anchors.bottomMargin: 5 + } + } + } + + Menu { + id: menu + anchors.bottom: parent.bottom + menuWidth: parent.width + menuText: Device.update + menuHeight: (parent.height / 6) + onButtonClick: { + characteristicsPage.showServices() + Device.update = "Back" + } + } +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Devices.qml b/examples/bluetooth/lowenergyscanner/Scanner/Devices.qml new file mode 100644 index 000000000..6e5e85a52 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Devices.qml @@ -0,0 +1,121 @@ +// Copyright (C) 2013 BlackBerry Limited. All rights reserved. +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +pragma ComponentBehavior: Bound +import QtQuick + +Rectangle { + id: devicesPage + + property bool deviceState: Device.state + signal showServices + + width: 300 + height: 600 + + onDeviceStateChanged: { + if (!Device.state) + info.visible = false + } + + Header { + id: header + anchors.top: parent.top + headerText: { + if (Device.state) + return "Discovering" + + if (Device.devices_list.length > 0) + return "Select a device" + + return "Start Discovery" + } + } + + Dialog { + id: info + anchors.centerIn: parent + visible: false + } + + ListView { + id: theListView + width: parent.width + clip: true + + anchors.top: header.bottom + anchors.bottom: connectToggle.top + model: Device.devices_list + + delegate: Rectangle { + required property var modelData + id: box + height: 100 + width: theListView.width + color: "lightsteelblue" + border.width: 2 + border.color: "black" + radius: 5 + + MouseArea { + anchors.fill: parent + onClicked: { + Device.scan_services(box.modelData.device_address) + showServices() + } + } + + Label { + id: deviceName + textContent: box.modelData.device_name + anchors.top: parent.top + anchors.topMargin: 5 + } + + Label { + id: deviceAddress + textContent: box.modelData.device_address + font.pointSize: deviceName.font.pointSize * 0.7 + anchors.bottom: box.bottom + anchors.bottomMargin: 5 + } + } + } + + Menu { + id: connectToggle + + menuWidth: parent.width + anchors.bottom: menu.top + menuText: { + visible = Device.devices_list.length > 0 + if (Device.use_random_address) + return "Address type: Random" + else + return "Address type: Public" + } + + onButtonClick: Device.use_random_address = !Device.use_random_address + } + + Menu { + id: menu + anchors.bottom: parent.bottom + menuWidth: parent.width + menuHeight: (parent.height / 6) + menuText: Device.update + onButtonClick: { + if (!Device.state) { + Device.start_device_discovery() + // if start_device_discovery() failed Device.state is not set + if (Device.state) { + info.dialogText = "Searching..." + info.visible = true + } + } else { + Device.stop_device_discovery() + } + } + } +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Dialog.qml b/examples/bluetooth/lowenergyscanner/Scanner/Dialog.qml new file mode 100644 index 000000000..75e82642a --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Dialog.qml @@ -0,0 +1,48 @@ +// Copyright (C) 2013 BlackBerry Limited. All rights reserved. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Rectangle { + id: dialog + width: parent.width / 3 * 2 + height: dialogTextId.height + background.height + 20 + z: 50 + property string dialogText: "" + property bool busyImage: true + border.width: 1 + border.color: "#363636" + radius: 10 + + Text { + id: dialogTextId + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + anchors.horizontalCenter: parent.horizontalCenter + anchors.top: parent.top + anchors.topMargin: 10 + + elide: Text.ElideMiddle + text: dialog.dialogText + color: "#363636" + wrapMode: Text.Wrap + } + + Image { + id: background + + width: 20 + height: 20 + anchors.top: dialogTextId.bottom + anchors.horizontalCenter: dialogTextId.horizontalCenter + visible: parent.busyImage + source: "assets/busy_dark.png" + fillMode: Image.PreserveAspectFit + NumberAnimation on rotation { + duration: 3000 + from: 0 + to: 360 + loops: Animation.Infinite + } + } +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Header.qml b/examples/bluetooth/lowenergyscanner/Scanner/Header.qml new file mode 100644 index 000000000..c95385dd3 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Header.qml @@ -0,0 +1,25 @@ +// Copyright (C) 2013 BlackBerry Limited. All rights reserved. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Rectangle { + id: header + width: parent.width + height: 70 + border.width: 1 + border.color: "#363636" + radius: 5 + property string headerText: "" + + Text { + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + anchors.fill: parent + text: header.headerText + font.bold: true + font.pointSize: 20 + elide: Text.ElideMiddle + color: "#363636" + } +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Label.qml b/examples/bluetooth/lowenergyscanner/Scanner/Label.qml new file mode 100644 index 000000000..e31156740 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Label.qml @@ -0,0 +1,16 @@ +// Copyright (C) 2013 BlackBerry Limited. All rights reserved. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Text { + property string textContent: "" + font.pointSize: 20 + anchors.horizontalCenter: parent.horizontalCenter + color: "#363636" + horizontalAlignment: Text.AlignHCenter + elide: Text.ElideMiddle + width: parent.width + wrapMode: Text.Wrap + text: textContent +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Main.qml b/examples/bluetooth/lowenergyscanner/Scanner/Main.qml new file mode 100644 index 000000000..88600bace --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Main.qml @@ -0,0 +1,31 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick +import QtQuick.Layouts + +Window { + id: main + + width: 300 + height: 600 + visible: true + + StackLayout { + id: pagesLayout + anchors.fill: parent + currentIndex: 0 + + Devices { + onShowServices: pagesLayout.currentIndex = 1 + } + Services { + onShowDevices: pagesLayout.currentIndex = 0 + onShowCharacteristics: pagesLayout.currentIndex = 2 + } + Characteristics { + onShowDevices: pagesLayout.currentIndex = 0 + onShowServices: pagesLayout.currentIndex = 1 + } + } +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Menu.qml b/examples/bluetooth/lowenergyscanner/Scanner/Menu.qml new file mode 100644 index 000000000..ef69c895e --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Menu.qml @@ -0,0 +1,55 @@ +// Copyright (C) 2013 BlackBerry Limited. All rights reserved. +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import QtQuick + +Rectangle { + id: menu + + property real menuWidth: 100 + property real menuHeight: 50 + property string menuText: "Search" + signal buttonClick + + height: menuHeight + width: menuWidth + + Rectangle { + id: search + width: parent.width + height: parent.height + anchors.centerIn: parent + color: "#363636" + border.width: 1 + border.color: "#E3E3E3" + radius: 5 + Text { + id: searchText + horizontalAlignment: Text.AlignHCenter + verticalAlignment: Text.AlignVCenter + anchors.fill: parent + text: menu.menuText + elide: Text.ElideMiddle + color: "#E3E3E3" + wrapMode: Text.WordWrap + } + + MouseArea { + anchors.fill: parent + onPressed: { + search.width = search.width - 7 + search.height = search.height - 5 + } + + onReleased: { + search.width = search.width + 7 + search.height = search.height + 5 + } + + onClicked: { + menu.buttonClick() + } + } + } +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Services.qml b/examples/bluetooth/lowenergyscanner/Scanner/Services.qml new file mode 100644 index 000000000..70326242e --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/Services.qml @@ -0,0 +1,115 @@ +// Copyright (C) 2013 BlackBerry Limited. All rights reserved. +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +pragma ComponentBehavior: Bound +import QtQuick + +Rectangle { + id: servicesPage + + signal showCharacteristics + signal showDevices + + width: 300 + height: 600 + + Component.onCompleted: { + // Loading this page may take longer than QLEController + // stopping with an error, go back and readjust this view + // based on controller errors + if (Device.controller_error) { + info.visible = false + menu.menuText = Device.update + } + } + + Header { + id: header + anchors.top: parent.top + headerText: "Services list" + } + + Dialog { + id: info + anchors.centerIn: parent + visible: true + dialogText: "Scanning for services..." + } + + Connections { + target: Device + function onservices_updated() { + if (servicesview.count === 0) + info.dialogText = "No services found" + else + info.visible = false + } + + function ondisconnected() { + servicesPage.showDevices() + } + } + + ListView { + id: servicesview + width: parent.width + anchors.top: header.bottom + anchors.bottom: menu.top + model: Device.servicesList + clip: true + + delegate: Rectangle { + required property var modelData + id: box + height: 100 + color: "lightsteelblue" + border.width: 2 + border.color: "black" + radius: 5 + width: servicesview.width + + MouseArea { + anchors.fill: parent + onClicked: { + Device.connectToService(box.modelData.service_uuid) + servicesPage.showCharacteristics() + } + } + + Label { + id: serviceName + textContent: box.modelData.service_name + anchors.top: parent.top + anchors.topMargin: 5 + } + + Label { + textContent: box.modelData.service_type + font.pointSize: serviceName.font.pointSize * 0.5 + anchors.top: serviceName.bottom + } + + Label { + id: serviceUuid + font.pointSize: serviceName.font.pointSize * 0.5 + textContent: box.modelData.service_uuid + anchors.bottom: box.bottom + anchors.bottomMargin: 5 + } + } + } + + Menu { + id: menu + anchors.bottom: parent.bottom + menuWidth: parent.width + menuText: Device.update + menuHeight: (parent.height / 6) + onButtonClick: { + Device.disconnect_from_device() + servicesPage.showDevices() + Device.update = "Search" + } + } +} diff --git a/examples/bluetooth/lowenergyscanner/Scanner/assets/busy_dark.png b/examples/bluetooth/lowenergyscanner/Scanner/assets/busy_dark.png Binary files differnew file mode 100644 index 000000000..3a1059531 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/assets/busy_dark.png diff --git a/examples/bluetooth/lowenergyscanner/Scanner/qmldir b/examples/bluetooth/lowenergyscanner/Scanner/qmldir new file mode 100644 index 000000000..0adf6fb19 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/Scanner/qmldir @@ -0,0 +1,10 @@ +module Scanner +typeinfo scanner.qmltypes +Characteristics 1.0 Characteristics.qml +Devices 1.0 Devices.qml +Dialog 1.0 Dialog.qml +Header 1.0 Header.qml +Label 1.0 Label.qml +Main 1.0 Main.qml +Menu 1.0 Menu.qml +Services 1.0 Services.qml diff --git a/examples/bluetooth/lowenergyscanner/characteristicinfo.py b/examples/bluetooth/lowenergyscanner/characteristicinfo.py new file mode 100644 index 000000000..a0e9df77e --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/characteristicinfo.py @@ -0,0 +1,88 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import QObject, Property, Signal +from PySide6.QtBluetooth import QLowEnergyCharacteristic, QBluetoothUuid + + +class CharacteristicInfo(QObject): + + characteristic_changed = Signal() + + def __init__(self, characteristic=None) -> None: + super().__init__() + self._characteristic = characteristic + + @Property(str, notify=characteristic_changed) + def characteristic_name(self): + if not self.characteristic: + raise Exception("characteristic unset") + name = self.characteristic.name() + if name: + return name + + for descriptor in self.characteristic.descriptors(): + if descriptor.type() == QBluetoothUuid.DescriptorType.CharacteristicUserDescription: + name = descriptor.value() + break + + if not name: + name = "Unknown" + + return name + + @Property(str, notify=characteristic_changed) + def characteristic_uuid(self): + uuid = self.characteristic.uuid() + result16, success16 = uuid.toUInt16() + if success16: + return f"0x{result16:x}" + + result32, sucess32 = uuid.toUInt32() + if sucess32: + return f"0x{result32:x}" + + return uuid.toString().replace('{', '').replace('}', '') + + @Property(str, notify=characteristic_changed) + def characteristic_value(self): + # Show raw string first and hex value below + a = self.characteristic.value() + if not a: + return "<none>" + + result = f"{str(a)}\n{str(a.toHex())}" + return result + + @Property(str, notify=characteristic_changed) + def characteristic_permission(self): + properties = "( " + permission = self.characteristic.properties() + if (permission & QLowEnergyCharacteristic.Read): + properties += " Read" + if (permission & QLowEnergyCharacteristic.Write): + properties += " Write" + if (permission & QLowEnergyCharacteristic.Notify): + properties += " Notify" + if (permission & QLowEnergyCharacteristic.Indicate): + properties += " Indicate" + if (permission & QLowEnergyCharacteristic.ExtendedProperty): + properties += " ExtendedProperty" + if (permission & QLowEnergyCharacteristic.Broadcasting): + properties += " Broadcast" + if (permission & QLowEnergyCharacteristic.WriteNoResponse): + properties += " WriteNoResp" + if (permission & QLowEnergyCharacteristic.WriteSigned): + properties += " WriteSigned" + properties += " )" + return properties + + @property + def characteristic(self): + return self._characteristic + + @characteristic.setter + def characteristic(self, characteristic): + self._characteristic = characteristic + self.characteristic_changed.emit() + diff --git a/examples/bluetooth/lowenergyscanner/device.py b/examples/bluetooth/lowenergyscanner/device.py new file mode 100644 index 000000000..e69a8450e --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/device.py @@ -0,0 +1,279 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause +import warnings +from PySide6.QtBluetooth import (QBluetoothDeviceDiscoveryAgent, QLowEnergyController, + QBluetoothDeviceInfo, QBluetoothUuid, QLowEnergyService) +from PySide6.QtCore import QObject, Property, Signal, Slot, QTimer, QMetaObject, Qt +from PySide6.QtQml import QmlElement, QmlSingleton + +from deviceinfo import DeviceInfo +from serviceinfo import ServiceInfo +from characteristicinfo import CharacteristicInfo + +QML_IMPORT_NAME = "Scanner" +QML_IMPORT_MAJOR_VERSION = 1 + +@QmlElement +@QmlSingleton +class Device(QObject): + + devices_updated = Signal() + services_updated = Signal() + characteristic_updated = Signal() + update_changed = Signal() + state_changed = Signal() + disconnected = Signal() + random_address_changed = Signal() + + def __init__(self, parent=None) -> None: + super().__init__(parent) + self.devices = [] + self._services = [] + self._characteristics = [] + self._previousAddress = "" + self._message = "" + self.currentDevice = DeviceInfo() + self.connected = False + self.controller: QLowEnergyController = None + self._deviceScanState = False + self.random_address = False + self.discovery_agent = QBluetoothDeviceDiscoveryAgent() + self.discovery_agent.setLowEnergyDiscoveryTimeout(25000) + self.discovery_agent.deviceDiscovered.connect(self.add_device) + self.discovery_agent.errorOccurred.connect(self.device_scan_error) + self.discovery_agent.finished.connect(self.device_scan_finished) + self.update = "Search" + + @Property("QVariant", notify=devices_updated) + def devices_list(self): + return self.devices + + @Property("QVariant", notify=services_updated) + def services_list(self): + return self._services + + @Property("QVariant", notify=characteristic_updated) + def characteristic_list(self): + return self._characteristics + + @Property(str, notify=update_changed) + def update(self): + return self._message + + @update.setter + def update(self, message): + self._message = message + self.update_changed.emit() + + @Property(bool, notify=random_address_changed) + def use_random_address(self): + return self.random_address + + @use_random_address.setter + def use_random_address(self, newValue): + self.random_address = newValue + self.random_address_changed.emit() + + @Property(bool, notify=state_changed) + def state(self): + return self._deviceScanState + + @Property(bool) + def controller_error(self): + return self.controller and (self.controller.error() != QLowEnergyController.NoError) + + @Slot() + def start_device_discovery(self): + self.devices.clear() + self.devices_updated.emit() + self.update = "Scanning for devices ..." + self.discovery_agent.start(QBluetoothDeviceDiscoveryAgent.LowEnergyMethod) + + if self.discovery_agent.isActive(): + self._deviceScanState = True + self.state_changed.emit() + + @Slot(str) + def scan_services(self, address): + # We need the current device for service discovery. + for device in self.devices: + if device.device_address == address: + self.currentDevice.set_device(device.get_device()) + break + + if not self.currentDevice.get_device().isValid(): + warnings.warn("Not a valid device") + return + + self._characteristics.clear() + self.characteristic_updated.emit() + self._services.clear() + self.services_updated.emit() + + self.update = "Back\n(Connecting to device...)" + + if self.controller and (self._previousAddress != self.currentDevice.device_address): + self.controller.disconnectFromDevice() + del self.controller + self.controller = None + + if not self.controller: + self.controller = QLowEnergyController.createCentral(self.currentDevice.get_device()) + self.controller.connected.connect(self.device_connected) + self.controller.errorOccurred.connect(self.error_received) + self.controller.disconnected.connect(self.device_disconnected) + self.controller.serviceDiscovered.connect(self.add_low_energy_service) + self.controller.discoveryFinished.connect(self.services_scan_done) + + if self.random_address: + self.controller.setRemoteAddressType(QLowEnergyController.RandomAddress) + else: + self.controller.setRemoteAddressType(QLowEnergyController.PublicAddress) + self.controller.connectToDevice() + + self._previousAddress = self.currentDevice.device_address + + @Slot(str) + def connect_to_service(self, uuid): + service: QLowEnergyService = None + for serviceInfo in self._services: + if not serviceInfo: + continue + + if serviceInfo.service_uuid == uuid: + service = serviceInfo.service + break + + if not service: + return + + self._characteristics.clear() + self.characteristic_updated.emit() + + if service.state() == QLowEnergyService.RemoteService: + service.state_changed.connect(self.service_details_discovered) + service.discoverDetails() + self.update = "Back\n(Discovering details...)" + return + + # discovery already done + chars = service.characteristics() + for ch in chars: + cInfo = CharacteristicInfo(ch) + self._characteristics.append(cInfo) + + QTimer.singleShot(0, self.characteristic_updated) + + @Slot() + def disconnect_from_device(self): + # UI always expects disconnect() signal when calling this signal + # TODO what is really needed is to extend state() to a multi value + # and thus allowing UI to keep track of controller progress in addition to + # device scan progress + + if self.controller.state() != QLowEnergyController.UnconnectedState: + self.controller.disconnectFromDevice() + else: + self.device_disconnected() + + @Slot(QBluetoothDeviceInfo) + def add_device(self, info): + if info.coreConfigurations() & QBluetoothDeviceInfo.LowEnergyCoreConfiguration: + self.update = "Last device added: " + info.name() + + @Slot() + def device_scan_finished(self): + foundDevices = self.discovery_agent.discoveredDevices() + for nextDevice in foundDevices: + if nextDevice.coreConfigurations() & QBluetoothDeviceInfo.LowEnergyCoreConfiguration: + device = DeviceInfo(nextDevice) + self.devices.append(device) + + self.devices_updated.emit() + self._deviceScanState = False + self.state_changed.emit() + if not self.devices: + self.update = "No Low Energy devices found..." + else: + self.update = "Done! Scan Again!" + + @Slot("QBluetoothDeviceDiscovertAgent::Error") + def device_scan_error(self, error): + if error == QBluetoothDeviceDiscoveryAgent.PoweredOffError: + self.update = ( + "The Bluetooth adaptor is powered off, power it on before doing discovery." + ) + elif error == QBluetoothDeviceDiscoveryAgent.InputOutputError: + self.update = "Writing or reading from the device resulted in an error." + else: + qme = self.discovery_agent.metaObject().enumerator( + self.discovery_agent.metaObject().indexOfEnumerator("Error") + ) + self.update = f"Error: {qme.valueToKey(error)}" + + self._deviceScanState = False + self.devices_updated.emit() + self.state_changed.emit() + + @Slot(QBluetoothUuid) + def add_low_energy_service(self, service_uuid): + service = self.controller.createServiceObject(service_uuid) + if not service: + warnings.warn("Cannot create service from uuid") + return + + serv = ServiceInfo(service) + self._services.append(serv) + self.services_updated.emit() + + @Slot() + def device_connected(self): + self.update = "Back\n(Discovering services...)" + self.connected = True + self.controller.discoverServices() + + @Slot("QLowEnergyController::Error") + def error_received(self, error): + warnings.warn(f"Error: {self.controller.errorString()}") + self.update = f"Back\n({self.controller.errorString()})" + + @Slot() + def services_scan_done(self): + self.update = "Back\n(Service scan done!)" + # force UI in case we didn't find anything + if not self._services: + self.services_updated.emit() + + @Slot() + def device_disconnected(self): + warnings.warn("Disconnect from Device") + self.disconnected.emit() + + @Slot("QLowEnergyService::ServiceState") + def service_details_discovered(self, newState): + if newState != QLowEnergyService.RemoteServiceDiscovered: + # do not hang in "Scanning for characteristics" mode forever + # in case the service discovery failed + # We have to queue the signal up to give UI time to even enter + # the above mode + if newState != QLowEnergyService.RemoteServiceDiscovering: + QMetaObject.invokeMethod(self.characteristic_updated, Qt.QueuedConnection) + return + + service = self.sender() + if not service: + return + + chars = service.characteristics() + for ch in chars: + cInfo = CharacteristicInfo(ch) + self._characteristics.append(cInfo) + + self.characteristic_updated.emit() + + @Slot() + def stop_device_discovery(self): + if self.discovery_agent.isActive(): + self.discovery_agent.stop() + + diff --git a/examples/bluetooth/lowenergyscanner/deviceinfo.py b/examples/bluetooth/lowenergyscanner/deviceinfo.py new file mode 100644 index 000000000..edcbef89d --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/deviceinfo.py @@ -0,0 +1,35 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import sys + +from PySide6.QtCore import QObject, Property, Signal +from PySide6.QtBluetooth import QBluetoothDeviceInfo + + +class DeviceInfo(QObject): + + device_changed = Signal() + + def __init__(self, d: QBluetoothDeviceInfo = None) -> None: + super().__init__() + self._device = d + + @Property(str, notify=device_changed) + def device_name(self): + return self._device.name() + + @Property(str, notify=device_changed) + def device_address(self): + if sys.platform == "darwin": + return self._device.deviceUuid().toString() + + return self._device.address().toString() + + def get_device(self): + return self._device + + def set_device(self, device): + self._device = device + self.device_changed.emit() + diff --git a/examples/bluetooth/lowenergyscanner/doc/lowenergyscanner.png b/examples/bluetooth/lowenergyscanner/doc/lowenergyscanner.png Binary files differnew file mode 100644 index 000000000..29f41deb4 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/doc/lowenergyscanner.png diff --git a/examples/bluetooth/lowenergyscanner/doc/lowenergyscanner.rst b/examples/bluetooth/lowenergyscanner/doc/lowenergyscanner.rst new file mode 100644 index 000000000..c20c2d8b7 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/doc/lowenergyscanner.rst @@ -0,0 +1,9 @@ +Bluetooth Low Energy Scanner Example +==================================== + +A Python application that demonstrates the analogous example in Qt +`Bluetooth Low Energy Scanner <https://doc.qt.io/qt-6/qtbluetooth-lowenergyscanner-example.html>`_ + +.. image:: lowenergyscanner.png + :width: 400 + :alt: lowenergyscanner screenshot diff --git a/examples/bluetooth/lowenergyscanner/lowenergyscanner.pyproject b/examples/bluetooth/lowenergyscanner/lowenergyscanner.pyproject new file mode 100644 index 000000000..7e0cfa3d9 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/lowenergyscanner.pyproject @@ -0,0 +1,7 @@ +{ + "files": ["main.py", "device.py", "deviceinfo.py", "serviceinfo.py", "characteristicinfo.py", + "Scanner/Main.qml", "Scanner/Menu.qml","Scanner/Header.qml", + "Scanner/Characteristics.qml", "Scanner/Dialog.qml", "Scanner/Services.qml", + "Scanner/Label.qml", "Scanner/Devices.qml", "Scanner/assets/busy_dark.png", + "Scanner/qmldir"] +} diff --git a/examples/bluetooth/lowenergyscanner/main.py b/examples/bluetooth/lowenergyscanner/main.py new file mode 100644 index 000000000..dfbff97b3 --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/main.py @@ -0,0 +1,27 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the bluetooth/lowenergyscanner example from Qt v6.x""" + + +import sys + +from PySide6.QtCore import QCoreApplication +from PySide6.QtGui import QGuiApplication +from PySide6.QtQml import QQmlApplicationEngine + +from device import Device +from pathlib import Path + +if __name__ == '__main__': + app = QGuiApplication(sys.argv) + engine = QQmlApplicationEngine() + engine.addImportPath(Path(__file__).parent) + engine.loadFromModule("Scanner", "Main") + + if not engine.rootObjects(): + sys.exit(-1) + + ex = QCoreApplication.exec() + del engine + sys.exit(ex) diff --git a/examples/bluetooth/lowenergyscanner/serviceinfo.py b/examples/bluetooth/lowenergyscanner/serviceinfo.py new file mode 100644 index 000000000..092e9898f --- /dev/null +++ b/examples/bluetooth/lowenergyscanner/serviceinfo.py @@ -0,0 +1,66 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import QObject, Property, Signal +from PySide6.QtBluetooth import QLowEnergyService + + +class ServiceInfo(QObject): + + service_changed = Signal() + + def __init__(self, service: QLowEnergyService) -> None: + super().__init__() + self._service = service + self.service.setParent(self) + + @Property(str, notify=service_changed) + def service_name(self): + if not self.service: + return "" + + return self.service.service_name() + + @Property(str, notify=service_changed) + def service_type(self): + if not self.service: + return "" + + result = "" + if (self.service.type() & QLowEnergyService.PrimaryService): + result += "primary" + else: + result += "secondary" + + if (self.service.type() & QLowEnergyService.IncludedService): + result += " included" + + result = '<' + result + '>' + + return result + + @Property(str, notify=service_changed) + def service_uuid(self): + if not self.service: + return "" + + uuid = self.service.service_uuid() + result16, success16 = uuid.toUInt16() + if success16: + return f"0x{result16:x}" + + result32, sucesss32 = uuid.toUInt32() + if sucesss32: + return f"0x{result32:x}" + + return uuid.toString().replace('{', '').replace('}', '') + + @property + def service(self): + return self._service + + @service.setter + def service(self, service): + self._service = service + + diff --git a/examples/charts/audio/audio.py b/examples/charts/audio/audio.py index 14026e897..8ba0b20c5 100644 --- a/examples/charts/audio/audio.py +++ b/examples/charts/audio/audio.py @@ -6,8 +6,7 @@ import sys from PySide6.QtCharts import QChart, QChartView, QLineSeries, QValueAxis from PySide6.QtCore import QPointF, Slot -from PySide6.QtMultimedia import (QAudioDevice, QAudioFormat, - QAudioSource, QMediaDevices) +from PySide6.QtMultimedia import QAudioFormat, QAudioSource, QMediaDevices from PySide6.QtWidgets import QApplication, QMainWindow, QMessageBox diff --git a/examples/charts/chartthemes/README.md b/examples/charts/chartthemes/README.md index 806e391d2..1b1ab51f7 100644 --- a/examples/charts/chartthemes/README.md +++ b/examples/charts/chartthemes/README.md @@ -3,7 +3,7 @@ To generated the file `ui_themewidget.py`, the following command need to be executed: -`pyside6-uic themewidget.ui > ui_themewidget.py` +`pyside6-uic themewidget.ui -o ui_themewidget.py` Also, if you modify the UI file, then you would need to run the previous command again. diff --git a/examples/charts/chartthemes/main.py b/examples/charts/chartthemes/main.py index fd5524f20..192382a98 100644 --- a/examples/charts/chartthemes/main.py +++ b/examples/charts/chartthemes/main.py @@ -134,7 +134,7 @@ class ThemeWidget(QWidget): for j in range(len(self.data_table[i])): data = self.data_table[i][j] if lower_series: - points = lower_series.pointsVector() + points = lower_series.points() y_value = points[i].y() + data[0].y() upper_series.append(QPointF(j, y_value)) else: @@ -145,10 +145,12 @@ class ThemeWidget(QWidget): lower_series = upper_series chart.createDefaultAxes() - chart.axisX().setRange(0, self.value_count - 1) - chart.axisY().setRange(0, self.value_max) + axis_x = chart.axes(Qt.Horizontal)[0] + axis_x.setRange(0, self.value_count - 1) + axis_y = chart.axes(Qt.Vertical)[0] + axis_y.setRange(0, self.value_max) # Add space to label to add space between labels and axis - chart.axisY().setLabelFormat("%.1f ") + axis_y.setLabelFormat("%.1f ") return chart @@ -166,9 +168,10 @@ class ThemeWidget(QWidget): chart.addSeries(series) chart.createDefaultAxes() - chart.axisY().setRange(0, self.value_max * 2) + axis_y = chart.axes(Qt.Vertical)[0] + axis_y.setRange(0, self.value_max * 2) # Add space to label to add space between labels and axis - chart.axisY().setLabelFormat("%.1f ") + axis_y.setLabelFormat("%.1f ") return chart @@ -185,10 +188,12 @@ class ThemeWidget(QWidget): chart.addSeries(series) chart.createDefaultAxes() - chart.axisX().setRange(0, self.value_max) - chart.axisY().setRange(0, self.value_count) + axis_x = chart.axes(Qt.Horizontal)[0] + axis_x.setRange(0, self.value_max) + axis_y = chart.axes(Qt.Vertical)[0] + axis_y.setRange(0, self.value_count) # Add space to label to add space between labels and axis - chart.axisY().setLabelFormat("%.1f ") + axis_y.setLabelFormat("%.1f ") return chart @@ -222,10 +227,12 @@ class ThemeWidget(QWidget): chart.addSeries(series) chart.createDefaultAxes() - chart.axisX().setRange(0, self.value_max) - chart.axisY().setRange(0, self.value_count) + axis_x = chart.axes(Qt.Horizontal)[0] + axis_x.setRange(0, self.value_max) + axis_y = chart.axes(Qt.Vertical)[0] + axis_y.setRange(0, self.value_count) # Add space to label to add space between labels and axis - chart.axisY().setLabelFormat("%.1f ") + axis_y.setLabelFormat("%.1f ") return chart @@ -241,10 +248,12 @@ class ThemeWidget(QWidget): chart.addSeries(series) chart.createDefaultAxes() - chart.axisX().setRange(0, self.value_max) - chart.axisY().setRange(0, self.value_count) + axis_x = chart.axes(Qt.Horizontal)[0] + axis_x.setRange(0, self.value_max) + axis_y = chart.axes(Qt.Vertical)[0] + axis_y.setRange(0, self.value_count) # Add space to label to add space between labels and axis - chart.axisY().setLabelFormat("%.1f ") + axis_y.setLabelFormat("%.1f ") return chart @@ -262,26 +271,8 @@ class ThemeWidget(QWidget): chart_theme = self.charts[0].chart().theme() if chart_theme != theme: for chart_view in self.charts: - if theme == 0: - theme_name = QChart.ChartThemeLight - elif theme == 1: - theme_name = QChart.ChartThemeBlueCerulean - elif theme == 2: - theme_name = QChart.ChartThemeDark - elif theme == 3: - theme_name = QChart.ChartThemeBrownSand - elif theme == 4: - theme_name = QChart.ChartThemeBlueNcs - elif theme == 5: - theme_name = QChart.ChartThemeHighContrast - elif theme == 6: - theme_name = QChart.ChartThemeBlueIcy - elif theme == 7: - theme_name = QChart.ChartThemeQt - else: - theme_name = QChart.ChartThemeLight - - chart_view.chart().setTheme(theme_name) + chart_view.chart().setTheme(theme) + # Set palette colors based on selected theme if theme == QChart.ChartThemeLight: diff --git a/examples/charts/donutbreakdown/donutbreakdown.py b/examples/charts/donutbreakdown/donutbreakdown.py index bd9c6240f..1597685c2 100644 --- a/examples/charts/donutbreakdown/donutbreakdown.py +++ b/examples/charts/donutbreakdown/donutbreakdown.py @@ -5,8 +5,8 @@ import sys -from PySide6.QtCore import Qt -from PySide6.QtGui import QColor, QFont, QPainter, QScreen +from PySide6.QtCore import Qt, Slot +from PySide6.QtGui import QColor, QFont, QPainter from PySide6.QtWidgets import QApplication, QMainWindow from PySide6.QtCharts import QChart, QChartView, QPieSeries, QPieSlice @@ -29,6 +29,7 @@ class MainSlice(QPieSlice): def name(self): return self.name + @Slot() def update_label(self): p = self.percentage() * 100 self.setLabel(f"{self.name} {p:.2f}%") diff --git a/examples/charts/legend/legend.py b/examples/charts/legend/legend.py index 4b46cc58b..f1929547d 100644 --- a/examples/charts/legend/legend.py +++ b/examples/charts/legend/legend.py @@ -4,7 +4,7 @@ """PySide6 port of the Legend example from Qt v5.x""" import sys -from PySide6.QtCore import Qt, QRectF +from PySide6.QtCore import Qt, QRectF, Slot from PySide6.QtGui import QBrush, QColor, QPainter, QPen from PySide6.QtWidgets import (QApplication, QDoubleSpinBox, QFormLayout, QGridLayout, QGroupBox, QPushButton, QWidget) @@ -123,6 +123,7 @@ class MainWidget(QWidget): def hide_legend_spinbox(self): self.legend_settings.setVisible(False) + @Slot() def toggle_attached(self): legend = self.chart.legend() if legend.isAttachedToChart(): @@ -139,6 +140,7 @@ class MainWidget(QWidget): self.hide_legend_spinbox() self.update() + @Slot() def add_barset(self): series_count = self.series.count() bar_set = QBarSet(f"set {series_count}") @@ -146,12 +148,14 @@ class MainWidget(QWidget): bar_set.append([1 + delta, 2 + delta, 3 + delta, 4 + delta]) self.series.append(bar_set) + @Slot() def remove_barset(self): sets = self.series.barSets() len_sets = len(sets) if len_sets > 0: self.series.remove(sets[len_sets - 1]) + @Slot() def set_legend_alignment(self): button = self.sender() legend = self.chart.legend() @@ -174,18 +178,21 @@ class MainWidget(QWidget): button.setText("Align (Top)") legend.setAlignment(Qt.AlignTop) + @Slot() def toggle_bold(self): legend = self.chart.legend() font = legend.font() font.setBold(not font.bold()) legend.setFont(font) + @Slot() def toggle_italic(self): legend = self.chart.legend() font = legend.font() font.setItalic(not font.italic()) legend.setFont(font) + @Slot() def font_size_changed(self): legend = self.chart.legend() font = legend.font() @@ -195,6 +202,7 @@ class MainWidget(QWidget): font.setPointSizeF(font_size) legend.setFont(font) + @Slot() def update_legend_layout(self): legend = self.chart.legend() diff --git a/examples/charts/lineandbar/lineandbar.py b/examples/charts/lineandbar/lineandbar.py index 142d011d6..62721c763 100644 --- a/examples/charts/lineandbar/lineandbar.py +++ b/examples/charts/lineandbar/lineandbar.py @@ -51,13 +51,15 @@ class TestChart(QMainWindow): self.categories = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"] self._axis_x = QBarCategoryAxis() self._axis_x.append(self.categories) - self.chart.setAxisX(self._axis_x, self._line_series) - self.chart.setAxisX(self._axis_x, self._bar_series) + self.chart.addAxis(self._axis_x, Qt.AlignBottom) + self._line_series.attachAxis(self._axis_x) + self._bar_series.attachAxis(self._axis_x) self._axis_x.setRange("Jan", "Jun") self._axis_y = QValueAxis() - self.chart.setAxisY(self._axis_y, self._line_series) - self.chart.setAxisY(self._axis_y, self._bar_series) + self.chart.addAxis(self._axis_x, Qt.AlignLeft) + self._line_series.attachAxis(self._axis_y) + self._bar_series.attachAxis(self._axis_y) self._axis_y.setRange(0, 20) self.chart.legend().setVisible(True) diff --git a/examples/charts/nesteddonuts/nesteddonuts.py b/examples/charts/nesteddonuts/nesteddonuts.py index 2ce068bcf..49173c33a 100644 --- a/examples/charts/nesteddonuts/nesteddonuts.py +++ b/examples/charts/nesteddonuts/nesteddonuts.py @@ -5,7 +5,7 @@ import sys -from PySide6.QtCore import Qt, QTimer +from PySide6.QtCore import Qt, QTimer, Slot from PySide6.QtGui import QPainter from PySide6.QtWidgets import QApplication, QGridLayout, QWidget from PySide6.QtCharts import QChart, QChartView, QPieSeries, QPieSlice @@ -65,6 +65,7 @@ class Widget(QWidget): self.donuts.append(donut) self.chart_view.chart().addSeries(donut) + @Slot() def update_rotation(self): for donut in self.donuts: phase_shift = randrange(-50, 100) diff --git a/examples/charts/percentbarchart/percentbarchart.py b/examples/charts/percentbarchart/percentbarchart.py index f6021ee8b..cfb11800a 100644 --- a/examples/charts/percentbarchart/percentbarchart.py +++ b/examples/charts/percentbarchart/percentbarchart.py @@ -43,7 +43,8 @@ class MainWindow(QMainWindow): axis = QBarCategoryAxis() axis.append(categories) chart.createDefaultAxes() - chart.setAxisX(axis, series) + chart.addAxis(axis, Qt.AlignBottom) + series.attachAxis(axis) chart.legend().setVisible(True) chart.legend().setAlignment(Qt.AlignBottom) diff --git a/examples/charts/pointconfiguration/chartwindow.py b/examples/charts/pointconfiguration/chartwindow.py new file mode 100644 index 000000000..055802b9f --- /dev/null +++ b/examples/charts/pointconfiguration/chartwindow.py @@ -0,0 +1,156 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the Selected Point Configuration Example from Qt 6.5""" +from PySide6.QtCore import QPointF, Slot +from PySide6.QtGui import QColor, QIcon, QPainter +from PySide6.QtWidgets import QMainWindow, QLineEdit, QLabel, QComboBox +from PySide6.QtWidgets import QCheckBox, QWidget, QGridLayout, QHBoxLayout +from PySide6.QtCharts import QLineSeries, QXYSeries, QChart, QChartView +from typing import Union + + +PointConfig = QXYSeries.PointConfiguration + + +class ChartWindow(QMainWindow): + def __init__(self, parent=None): + super().__init__(parent) + + self.setWindowTitle("Chart") + self._series = QLineSeries(self) + self._series.setName("Customized series") + self._series.setPointsVisible(True) + self._series.append([QPointF(0, 7), QPointF(2, 4), + QPointF(3, 5), QPointF(7, 4), + QPointF(10, 5), QPointF(11, 1), + QPointF(13, 3), QPointF(17, 6), + QPointF(18, 3), QPointF(20, 2)]) + + selected_point_index_label = QLabel("Selected Point: ") + self._selected_point_index_lineedit = QLineEdit() + self._selected_point_index_lineedit.setReadOnly(True) + self._selected_point_index_lineedit.setStyleSheet( + "background-color: rgba(0, 0, 0, 0); border: 0px") + + color_label = QLabel("Color: ") + self._color_combobox = QComboBox() + color_strings = ["red", "orange", "yellow", "green", "blue", + "indigo", "violet", "black"] + for color_str in color_strings: + self._color_combobox.addItem(QIcon(), color_str, QColor(color_str)) + + size_label = QLabel("Size: ") + self._size_combobox = QComboBox() + for size in [2, 3, 4, 6, 8, 10, 12, 15]: + self._size_combobox.addItem(QIcon(), str(size), size) + + label_visibility_label = QLabel("Label Visibility: ") + self._label_visibility_checkbox = QCheckBox() + + custom_label_label = QLabel("Custom Label: ") + self._custom_label_lineedit = QLineEdit() + + self._series.clicked.connect(self._select_point) + self._color_combobox.activated.connect(self._set_color) + self._size_combobox.activated.connect(self._set_size) + label_vis_checkbox = self._label_visibility_checkbox + label_vis_checkbox.clicked.connect(self._set_label_visibility) + clabel_lineedit = self._custom_label_lineedit + clabel_lineedit.editingFinished.connect(self._set_custom_label) + + self._chart = QChart() + self._chart.addSeries(self._series) + self._chart.createDefaultAxes() + + chart_view = QChartView(self._chart) + chart_view.setRenderHint(QPainter.RenderHint.Antialiasing) + + control_widget = QWidget(self) + control_layout = QGridLayout(control_widget) + control_layout.setColumnStretch(1, 1) + + control_layout.addWidget(selected_point_index_label, 0, 0) + control_layout.addWidget(self._selected_point_index_lineedit, 0, 1) + + control_layout.addWidget(color_label, 1, 0) + control_layout.addWidget(self._color_combobox, 1, 1) + + control_layout.addWidget(size_label, 2, 0) + control_layout.addWidget(self._size_combobox, 2, 1) + + control_layout.addWidget(label_visibility_label, 3, 0) + control_layout.addWidget(self._label_visibility_checkbox, 3, 1, 1, 2) + + control_layout.addWidget(custom_label_label, 4, 0) + control_layout.addWidget(self._custom_label_lineedit, 4, 1) + + main_widget = QWidget(self) + main_layout = QHBoxLayout(main_widget) + main_layout.addWidget(chart_view) + main_layout.setStretch(0, 1) + main_layout.addWidget(control_widget) + self.setCentralWidget(main_widget) + + self._select_point(4) + + @Slot(QPointF) + def _select_point(self, point: Union[QPointF, int]): + try: + index = (self._series.points().index(point.toPoint()) if + isinstance(point, QPointF) else point) + except ValueError: + # Do nothing if the place that was clicked on wasn't a point. + return + + self._series.deselectAllPoints() + self._series.selectPoint(index) + self._selectedPointIndex = index + self._selectedPointConfig = self._series.pointConfiguration(index) + selected_point = self._series.at(index) + selected_index_lineedit = self._selected_point_index_lineedit + selected_index_lineedit.setText("(" + str(selected_point.x()) + ", " + + str(selected_point.y()) + ")") + config = self._series.pointConfiguration(index) + + color = config.get(PointConfig.Color) or self._series.color() + size = config.get(PointConfig.Size) or self._series.markerSize() + labelVisibility = (config.get(PointConfig.LabelVisibility) or + self._series.pointLabelsVisible()) + customLabel = config.get(PointConfig.LabelFormat) or "" + + combobox_value_list = [ + (self._color_combobox, color.name(), color), + (self._size_combobox, str(size), size) + ] + for box, value_str, value in combobox_value_list: + if box.findData(value) < 0: + box.addItem(value_str, value) + box.setCurrentIndex(box.findData(value)) + + self._label_visibility_checkbox.setChecked(labelVisibility) + self._custom_label_lineedit.setText(customLabel) + + @Slot(int) + def _set_color(self, index: int): + spc = self._selectedPointConfig + spc[PointConfig.Color] = self._color_combobox.currentData() + self._series.setPointConfiguration(self._selectedPointIndex, spc) + + @Slot(int) + def _set_size(self, index: int): + spc = self._selectedPointConfig + spc[PointConfig.Size] = self._size_combobox.currentData() + self._series.setPointConfiguration(self._selectedPointIndex, spc) + + @Slot(bool) + def _set_label_visibility(self, checked: bool): + spc = self._selectedPointConfig + spc[PointConfig.LabelVisibility] = checked + self._series.setPointConfiguration(self._selectedPointIndex, spc) + + @Slot() + def _set_custom_label(self): + spc = self._selectedPointConfig + spc[PointConfig.LabelFormat] = self._custom_label_lineedit.text() + self._series.setPointConfiguration(self._selectedPointIndex, spc) diff --git a/examples/charts/pointconfiguration/doc/pointconfiguration.png b/examples/charts/pointconfiguration/doc/pointconfiguration.png Binary files differnew file mode 100644 index 000000000..791698587 --- /dev/null +++ b/examples/charts/pointconfiguration/doc/pointconfiguration.png diff --git a/examples/charts/pointconfiguration/doc/pointconfiguration.rst b/examples/charts/pointconfiguration/doc/pointconfiguration.rst new file mode 100644 index 000000000..ffe865d5e --- /dev/null +++ b/examples/charts/pointconfiguration/doc/pointconfiguration.rst @@ -0,0 +1,144 @@ +.. role:: py(code) + :language: python + +Selected Point Configuration Example +==================================== + +This example shows how to configure individual points of a :py:`QLineSeries`. + +.. image:: pointconfiguration.png + :width: 90% + :align: center + :alt: Line chart with controls for configuring selected points + +Features demonstrated +~~~~~~~~~~~~~~~~~~~~~ + +In this application you will learn how to: + +* Select a series of points on click +* Override the configuration for the following properties of specific points: + + * Color + * Size + * Label visibility + * Text format of the label + +Subclass QMainWindow +~~~~~~~~~~~~~~~~~~~~ + +Create a subclass of :py:`QMainWindow` to contain the chart and controls. + +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 16 + :lines: 16-18 + +Create a line series +~~~~~~~~~~~~~~~~~~~~ + +Create a :py:`QLineSeries` containing the points to plot. Give it a name and make the points +visible. + +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 20 + :lines: 20-28 + +Create the point configuration controls +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Now, create controls to configure the color, size, and label visibility attributes of a point. + +#. Create an associated label for each control, so the user knows what the control does. +#. For the color and size, use a :py:`QComboBox`, populating it with a variety of colors and size + choices. +#. Create the final two controls. Create a :py:`QCheckbox` to control the visibility of the selected + point, and a :py:`QLineEdit` to allow the user to provide a custom label for it. + +.. note:: + Do not set initial values for any of the controls, as a point will always be selected showing + its current settings. + +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 31 + :lines: 31-52 + +Populate the controls upon selecting a point +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Add the logic to set the current control values depending on the chosen point. Note that the whole +series value is used if there is no customization for a selected point. In this case, if the series +is set to show blue points, a blue color value will be shown in the color combobox. + +Perform some actions upon clicking on the lineseries. Look up the point clicked on and remove the +prior point selection. Finally, select the point that was clicked on. This makes the point larger to +indicate its selection. The current selected point's index and :py:`PointConfigurations` are saved +to a member variable for later use. + +Query the :py:`PointConfigurations`, and use those to find the matching indices in the combo boxes. +Set the current indices of the comboboxes to the corresponding values you looked up. Similarly, +look up the values in :py:`PointConfigurations`, and update the checkbox and line edit controls. + +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 54 + :lines: 54 +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 97 + :lines: 97-132 + +Provide the logic to configure the selected point +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Now that the controls are populated with some values, add logic to do something when the value +changes. Connect the control signals and the logic, to configure the selected point based on the +chosen values in the controls. You can do this by setting the :py:`QXYSeries::PointConfiguration` +value that is associated with the control, to the :py:`m_selectedPointConfig` and +:py:`PointConfigurations` member variables, and call :py:`QXYSeries::setPointConfiguration`. + +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 55 + :lines: 55-60 +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 140 + :lines: 140-156 + +Create the chart and lay out the controls +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Finally, create the chart and its view, add the series to the chart, create the layout of the +window, and select an initial point. + +.. literalinclude:: chartwindow.py + :linenos: + :lineno-start: 62 + :lines: 62-95 + +In our entrypoint file `pointconfiguration.py`, instantiate the :py:`ChartWindow`, resize it, show +it, and start the event loop. + +.. literalinclude:: pointconfiguration.py + :linenos: + :lineno-start: 11 + :lines: 11-17 + +You now have a fully functioning application that demonstrates how to customize individual chart +points. + +Usage +----- +To use this example, click any point you'd like to customize, change any of the comboboxes and +checkboxes controlling the individual point color, size, label visibility. You can customize the +label text in the line edit at the bottom. + +There are three special formatting strings for the label that you can use: ``@pointX``, ``@pointY``, +and ``@index``. These are replaced with the x value, y value, and index of the point, respectively. +More information about that can be found in the documentation for +`QtCharts.QXYSeries.pointLabelsFormat`_. + +.. _`QtCharts.QXYSeries.pointLabelsFormat`: https://doc.qt.io/qtforpython/PySide6/QtCharts/QXYSeries.html#PySide6.QtCharts.PySide6.QtCharts.QXYSeries.pointLabelsFormat diff --git a/examples/charts/pointconfiguration/pointconfiguration.py b/examples/charts/pointconfiguration/pointconfiguration.py new file mode 100644 index 000000000..d8c90d2df --- /dev/null +++ b/examples/charts/pointconfiguration/pointconfiguration.py @@ -0,0 +1,17 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the Light Markers Points Selection example from Qt v6.2""" +import sys +from PySide6.QtWidgets import QApplication + +from chartwindow import ChartWindow + + +if __name__ == "__main__": + + a = QApplication(sys.argv) + main_window = ChartWindow() + main_window.resize(640, 480) + main_window.show() + sys.exit(a.exec()) diff --git a/examples/charts/pointconfiguration/pointconfiguration.pyproject b/examples/charts/pointconfiguration/pointconfiguration.pyproject new file mode 100644 index 000000000..c53d798be --- /dev/null +++ b/examples/charts/pointconfiguration/pointconfiguration.pyproject @@ -0,0 +1,3 @@ +{ + "files": ["pointconfiguration.py", "chartwindow.py"] +} diff --git a/examples/charts/pointselectionandmarkers/doc/pointselectionandmarkers.png b/examples/charts/pointselectionandmarkers/doc/pointselectionandmarkers.png Binary files differnew file mode 100644 index 000000000..209bc3b0d --- /dev/null +++ b/examples/charts/pointselectionandmarkers/doc/pointselectionandmarkers.png diff --git a/examples/charts/pointselectionandmarkers/doc/pointselectionandmarkers.rst b/examples/charts/pointselectionandmarkers/doc/pointselectionandmarkers.rst new file mode 100644 index 000000000..e8776daf8 --- /dev/null +++ b/examples/charts/pointselectionandmarkers/doc/pointselectionandmarkers.rst @@ -0,0 +1,72 @@ +.. role:: py(code) + :language: python + +Light Markers and Points Selection Example +========================================== + +The Light Markers and Points Selection example shows how to use light markers +and point selections in a series. + +.. image:: pointselectionandmarkers.png + :width: 90% + :align: center + :alt: QChart with Light Markers shown + +Creating the chart and its elements +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +We start by creating a series, filling it with the data, and enabling the light marker and point selection features. +It is important not to set points visibility to :py:`True`, because light markers functionality is an independent feature and setting both would result in undesired behavior. + +.. literalinclude:: pointselectionandmarkers.py + :linenos: + :lineno-start: 20 + :lines: 20-42 + :emphasize-lines: 2-12 + +Then we create the :py:`QChart`, the :py:`QChartview` and the control widget with its layout to arrange customization elements. + +.. literalinclude:: pointselectionandmarkers.py + :lineno-start: 44 + :lines: 44-53 + :emphasize-lines: 1,6,9 + +Creating UI for configuring the chart +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The next step is where we create user interface elements that allow customizing the chart, including setting light marker and selection marker images. + +.. literalinclude:: pointselectionandmarkers.py + :linenos: + :lineno-start: 54 + :lines: 54-57 + +We create the label for the marker selection combobox and fill the combobox with the items. We then provide functionality to the combobox, allowing the user's selection to set the desired light marker image. As light markers are enabled and disabled by setting a valid QImage or setting an empty :py:`QImage()`, we need to make sure that if the user does not wish unselected points to be displayed, we do not actually set the light marker image. +If checking isn't performed, a new :py:`QImage` will be set as the light marker and unselected points will be visible even though it has been switched off. + +.. literalinclude:: pointselectionandmarkers.py + :linenos: + :lineno-start: 59 + :lines: 59-67 + :emphasize-lines: 1-3 + +Almost the same procedure applies to the selected point light marker and line color. The only difference is that there is no need to check the visibility of unselected points as it doesn't affect the functionality. + +.. literalinclude:: pointselectionandmarkers.py + :linenos: + :lineno-start: 70 + :lines: 70-85 + +A small difference comes with changing visibility of unselected points. As it was mentioned before, making light markers invisible is achieved by setting the light marker to an empty :py:`QImage()`. That is why, depending on checkbox state, selected point light marker is set to an empty :py:`QImage` or to the light marker extracted from the current index of the corresponding combobox. + +.. literalinclude:: pointselectionandmarkers.py + :linenos: + :lineno-start: 88 + :lines: 88-97 + :emphasize-lines: 5-6 + +The final part is to lay out the widgets within the main widget and set the main window size. + +Usage +----- +To use this example, change any of the comboboxes and checkboxes controlling the markers, line color, and unselected point visibility on the right. Then try clicking on points in the chart to select or deselect them. diff --git a/examples/charts/pointselectionandmarkers/images/blue_triangle.png b/examples/charts/pointselectionandmarkers/images/blue_triangle.png Binary files differnew file mode 100644 index 000000000..7790453c8 --- /dev/null +++ b/examples/charts/pointselectionandmarkers/images/blue_triangle.png diff --git a/examples/charts/pointselectionandmarkers/images/green_triangle.png b/examples/charts/pointselectionandmarkers/images/green_triangle.png Binary files differnew file mode 100644 index 000000000..29ae043f2 --- /dev/null +++ b/examples/charts/pointselectionandmarkers/images/green_triangle.png diff --git a/examples/charts/pointselectionandmarkers/markers.qrc b/examples/charts/pointselectionandmarkers/markers.qrc new file mode 100644 index 000000000..eb1e56d19 --- /dev/null +++ b/examples/charts/pointselectionandmarkers/markers.qrc @@ -0,0 +1,6 @@ +<RCC> + <qresource prefix="/"> + <file>images/blue_triangle.png</file> + <file>images/green_triangle.png</file> + </qresource> +</RCC> diff --git a/examples/charts/pointselectionandmarkers/pointselectionandmarkers.py b/examples/charts/pointselectionandmarkers/pointselectionandmarkers.py new file mode 100644 index 000000000..4f9540d42 --- /dev/null +++ b/examples/charts/pointselectionandmarkers/pointselectionandmarkers.py @@ -0,0 +1,127 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the Light Markers Points Selection example from Qt v6.2""" +import sys + +from PySide6.QtCore import Slot, QPointF, Qt +from PySide6.QtCharts import QChart, QChartView, QSplineSeries +from PySide6.QtGui import QPainter, QImage +from PySide6.QtWidgets import QApplication, QMainWindow, QWidget, QGridLayout, QComboBox, QCheckBox, QLabel, QHBoxLayout + +import utilities as Utilities + +if __name__ == "__main__": + + a = QApplication(sys.argv) + window = QMainWindow() + window.setWindowTitle("Light Markers and Points Selection") + + marker_size = 20. + series = QSplineSeries() + series.append([QPointF(0, 0), + QPointF(0.5, 2.27), + QPointF(1.5, 2.2), + QPointF(3.3, 1.7), + QPointF(4.23, 3.1), + QPointF(5.3, 2.3), + QPointF(6.47, 4.1)]) + series.setMarkerSize(marker_size) + series.setLightMarker(Utilities.default_light_marker(marker_size)) + series.setSelectedLightMarker(Utilities.default_selected_light_marker(marker_size)) + + @Slot(QPointF) + def toggle_selection(point): + try: + index = series.points().index(point) + if index != -1: + series.toggleSelection([index]) + except ValueError: + pass + + series.clicked.connect(toggle_selection) + + chart = QChart() + chart.addSeries(series) + chart.createDefaultAxes() + chart.legend().setVisible(False) + + chart_view = QChartView(chart) + chart_view.setRenderHint(QPainter.Antialiasing) + + control_widget = QWidget(window) + control_layout = QGridLayout(control_widget) + char_point_combobox = QComboBox() + char_point_selected_combobox = QComboBox() + line_color_combobox = QComboBox() + show_unselected_points_checkbox = QCheckBox() + + @Slot(int) + def set_light_marker(index): + if show_unselected_points_checkbox.isChecked(): + series.setLightMarker(Utilities.get_point_representation( + Utilities.point_type(index), marker_size)) + + char_point = QLabel("Char point: ") + char_point_combobox.addItems(["Red rectangle", "Green triangle", "Orange circle"]) + char_point_combobox.currentIndexChanged.connect(set_light_marker) + + + @Slot(int) + def set_selected_light_marker(index): + series.setSelectedLightMarker(Utilities.get_selected_point_representation(Utilities.selected_point_type(index), marker_size)) + + char_point_selected = QLabel("Char point selected: ") + char_point_selected_combobox.addItems(["Blue triangle", "Yellow rectangle", "Lavender circle"]) + char_point_selected_combobox.currentIndexChanged.connect(set_selected_light_marker) + + + @Slot(int) + def set_line_color(index): + series.setColor(Utilities.make_line_color(Utilities.line_color(index))) + + line_color_label = QLabel("Line color: ") + line_color_combobox.addItems(["Blue", "Black", "Mint"]) + line_color_combobox.currentIndexChanged.connect(set_line_color) + + + @Slot(int) + def display_unselected_points(checkbox_state): + if checkbox_state: + series.setLightMarker(Utilities.get_point_representation(Utilities.point_type(char_point_combobox.currentIndex()), marker_size)) + else: + series.setLightMarker(QImage()) + + show_unselected_points_label = QLabel("Display unselected points: ") + show_unselected_points_checkbox.setChecked(True) + show_unselected_points_checkbox.stateChanged.connect(display_unselected_points) + + + control_label = QLabel("Marker and Selection Controls") + control_label.setAlignment(Qt.AlignHCenter) + control_label_font = control_label.font() + control_label_font.setBold(True) + control_label.setFont(control_label_font) + control_layout.addWidget(control_label, 0, 0, 1, 2) + control_layout.addWidget(char_point, 1, 0) + control_layout.addWidget(char_point_combobox, 1, 1) + + control_layout.addWidget(char_point_selected, 2, 0) + control_layout.addWidget(char_point_selected_combobox, 2, 1) + + control_layout.addWidget(line_color_label, 3, 0) + control_layout.addWidget(line_color_combobox, 3, 1) + + control_layout.addWidget(show_unselected_points_label, 4, 0) + control_layout.addWidget(show_unselected_points_checkbox, 4, 1, 1, 2) + control_layout.setRowStretch(5, 1) + + main_widget = QWidget(window) + main_layout = QHBoxLayout(main_widget) + main_layout.addWidget(chart_view) + main_layout.addWidget(control_widget) + + window.setCentralWidget(main_widget) + window.resize(1080, 720) + window.show() + sys.exit(a.exec()) diff --git a/examples/charts/pointselectionandmarkers/pointselectionandmarkers.pyproject b/examples/charts/pointselectionandmarkers/pointselectionandmarkers.pyproject new file mode 100644 index 000000000..8c394457c --- /dev/null +++ b/examples/charts/pointselectionandmarkers/pointselectionandmarkers.pyproject @@ -0,0 +1,3 @@ +{ + "files": ["pointselectionandmarkers.py", "utilities.py", "markers.qrc"] +} diff --git a/examples/charts/pointselectionandmarkers/rc_markers.py b/examples/charts/pointselectionandmarkers/rc_markers.py new file mode 100644 index 000000000..f5a9cd42b --- /dev/null +++ b/examples/charts/pointselectionandmarkers/rc_markers.py @@ -0,0 +1,275 @@ +# Resource object code (Python 3) +# Created by: object code +# Created by: The Resource Compiler for Qt version 6.3.1 +# WARNING! 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+\x00\x00\x00IEND\xaeB`\x82\ +" + +qt_resource_name = b"\ +\x00\x06\ +\x07\x03}\xc3\ +\x00i\ +\x00m\x00a\x00g\x00e\x00s\ +\x00\x12\ +\x0c\xf7v\xe7\ +\x00g\ +\x00r\x00e\x00e\x00n\x00_\x00t\x00r\x00i\x00a\x00n\x00g\x00l\x00e\x00.\x00p\x00n\ +\x00g\ +\x00\x11\ +\x02\xf5Q\x07\ +\x00b\ +\x00l\x00u\x00e\x00_\x00t\x00r\x00i\x00a\x00n\x00g\x00l\x00e\x00.\x00p\x00n\x00g\ +\ +" + +qt_resource_struct = b"\ +\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\x01\ +\x00\x00\x00\x00\x00\x00\x00\x00\ +\x00\x00\x00\x00\x00\x02\x00\x00\x00\x02\x00\x00\x00\x02\ +\x00\x00\x00\x00\x00\x00\x00\x00\ +\x00\x00\x00<\x00\x00\x00\x00\x00\x01\x00\x00\x05q\ +\x00\x00\x01\x82`\x07\x0a\xa2\ +\x00\x00\x00\x12\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\ +\x00\x00\x01\x82`\x07!\xf4\ +" + +def qInitResources(): + QtCore.qRegisterResourceData(0x03, qt_resource_struct, qt_resource_name, qt_resource_data) + +def qCleanupResources(): + QtCore.qUnregisterResourceData(0x03, qt_resource_struct, qt_resource_name, qt_resource_data) + +qInitResources() diff --git a/examples/charts/pointselectionandmarkers/utilities.py b/examples/charts/pointselectionandmarkers/utilities.py new file mode 100644 index 000000000..6b96d6e26 --- /dev/null +++ b/examples/charts/pointselectionandmarkers/utilities.py @@ -0,0 +1,67 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtGui import QImage, QPainter, QColor +from PySide6.QtCore import Qt + +import rc_markers + +def rectangle(point_type, image_size): + image = QImage(image_size, image_size, QImage.Format_RGB32) + painter = QPainter() + painter.begin(image) + painter.setRenderHint(QPainter.Antialiasing) + painter.fillRect(0, 0, image_size, image_size, point_type[2]) + painter.end() + return image + +def triangle(point_type, image_size): + return QImage(point_type[3]).scaled(image_size, image_size) + +def circle(point_type, image_size): + image = QImage(image_size, image_size, QImage.Format_ARGB32) + image.fill(QColor(0, 0, 0, 0)) + painter = QPainter() + painter.begin(image) + painter.setRenderHint(QPainter.Antialiasing) + painter.setBrush(point_type[2]) + pen = painter.pen() + pen.setWidth(0) + painter.setPen(pen) + painter.drawEllipse(0, 0, image_size * 0.9, image_size * 0.9) + painter.end() + return image + +_point_types = [("RedRectangle", rectangle, Qt.red), + ("GreenTriangle", triangle, Qt.green, ":/images/green_triangle.png"), + ("OrangeCircle", circle, QColor(255, 127, 80))] +_selected_point_types = [("BlueTriangle", triangle, Qt.blue, ":/images/blue_triangle.png"), + ("YellowRectangle", rectangle, Qt.yellow), + ("LavenderCircle", circle, QColor(147, 112, 219))] +_line_colors = [("Blue", QColor(65, 105, 225)), ("Black", Qt.black), ("Mint", QColor(70, 203, 155))] + +def point_type(index): + return _point_types[index] + +def selected_point_type(index): + return _selected_point_types[index] + +def line_color(index): + return _line_colors[index] + + +def default_light_marker(image_size): + return rectangle(_point_types[0], image_size) + +def default_selected_light_marker(image_size): + return triangle(_selected_point_types[0], image_size) + + +def get_point_representation(point_type, image_size): + return point_type[1](point_type, image_size) + +def get_selected_point_representation(point_type, image_size): + return point_type[1](point_type, image_size) + +def make_line_color(line_color): + return line_color[1] diff --git a/examples/charts/qmlpolarchart/qmlpolarchart.py b/examples/charts/qmlpolarchart/qmlpolarchart.py index f12e6f5e8..6391fc305 100644 --- a/examples/charts/qmlpolarchart/qmlpolarchart.py +++ b/examples/charts/qmlpolarchart/qmlpolarchart.py @@ -8,8 +8,8 @@ from pathlib import Path import sys from PySide6.QtQuick import QQuickView -from PySide6.QtCore import Qt, QUrl -from PySide6.QtWidgets import QApplication, QMainWindow +from PySide6.QtCore import QUrl +from PySide6.QtWidgets import QApplication if __name__ == '__main__': diff --git a/examples/corelib/settingseditor/settingseditor.py b/examples/corelib/settingseditor/settingseditor.py index 266ddda4e..a77349e5e 100644 --- a/examples/corelib/settingseditor/settingseditor.py +++ b/examples/corelib/settingseditor/settingseditor.py @@ -7,7 +7,7 @@ import sys from PySide6.QtCore import (QByteArray, QDate, QDateTime, QDir, QEvent, QPoint, - QRect, QRegularExpression, QSettings, QSize, QTime, QTimer, Qt) + QRect, QRegularExpression, QSettings, QSize, QTime, QTimer, Qt, Slot) from PySide6.QtGui import (QAction, QColor, QIcon, QIntValidator, QDoubleValidator, QRegularExpressionValidator, QValidator) from PySide6.QtWidgets import (QAbstractItemView, QApplication, @@ -144,6 +144,7 @@ class MainWindow(QMainWindow): self.setWindowTitle("Settings Editor") self.resize(500, 600) + @Slot() def open_settings(self): if self.location_dialog is None: self.location_dialog = LocationDialog(self) @@ -156,6 +157,7 @@ class MainWindow(QMainWindow): self.set_settings_object(settings) self.fallbacks_action.setEnabled(True) + @Slot() def open_inifile(self): file_name, _ = QFileDialog.getOpenFileName(self, "Open INI File", '', "INI Files (*.ini *.conf)") @@ -170,6 +172,7 @@ class MainWindow(QMainWindow): self.set_settings_object(settings) self.fallbacks_action.setEnabled(False) + @Slot() def open_property_list(self): file_name, _ = QFileDialog.getOpenFileName(self, "Open Property List", '', "Property List Files (*.plist)") @@ -179,6 +182,7 @@ class MainWindow(QMainWindow): self.set_settings_object(settings) self.fallbacks_action.setEnabled(False) + @Slot() def open_registry_path(self): path, ok = QInputDialog.getText(self, "Open Registry Path", "Enter the path in the Windows registry:", @@ -189,19 +193,20 @@ class MainWindow(QMainWindow): self.set_settings_object(settings) self.fallbacks_action.setEnabled(False) + @Slot() def about(self): QMessageBox.about(self, "About Settings Editor", "The <b>Settings Editor</b> example shows how to access " "application settings using Qt.") def create_actions(self): - self._open_settings_act = QtGui.QAction("&Open Application Settings...", + self._open_settings_act = QAction("&Open Application Settings...", self, shortcut="Ctrl+O", triggered=self.openSettings) - self._open_ini_file_act = QtGui.QAction("Open I&NI File...", self, + self._open_ini_file_act = QAction("Open I&NI File...", self, shortcut="Ctrl+N", triggered=self.openIniFile) - self._open_property_list_act = QtGui.QAction("Open macOS &Property List...", + self._open_property_list_act = QAction("Open macOS &Property List...", self, shortcut="Ctrl+P", triggered=self.openPropertyList) def create_actions(self): @@ -473,6 +478,7 @@ class SettingsTree(QTreeWidget): def sizeHint(self): return QSize(800, 600) + @Slot(bool) def set_auto_refresh(self, autoRefresh): self.auto_refresh = autoRefresh @@ -483,15 +489,18 @@ class SettingsTree(QTreeWidget): else: self.refresh_timer.stop() + @Slot(bool) def set_fallbacks_enabled(self, enabled): if self.settings is not None: self.settings.setFallbacksEnabled(enabled) self.refresh() + @Slot() def maybe_refresh(self): if self.state() != QAbstractItemView.EditingState: self.refresh() + @Slot() def refresh(self): if self.settings is None: return diff --git a/examples/corelib/threads/mandelbrot.py b/examples/corelib/threads/mandelbrot.py index d92e8b604..b8cab06ef 100644 --- a/examples/corelib/threads/mandelbrot.py +++ b/examples/corelib/threads/mandelbrot.py @@ -9,7 +9,7 @@ import sys from PySide6.QtCore import (Signal, QMutex, QElapsedTimer, QMutexLocker, QPoint, QPointF, QSize, Qt, QThread, - QWaitCondition) + QWaitCondition, Slot) from PySide6.QtGui import QColor, QImage, QPainter, QPixmap, qRgb from PySide6.QtWidgets import QApplication, QWidget @@ -302,6 +302,7 @@ class MandelbrotWidget(QWidget): delta_y = (self.height() - self.pixmap.height()) / 2 - self._pixmap_offset.y() self.scroll(delta_x, delta_y) + @Slot(QImage,float) def update_pixmap(self, image, scale_factor): if not self._last_drag_pos.isNull(): return diff --git a/examples/datavisualization/graphgallery/axesinputhandler.py b/examples/datavisualization/graphgallery/axesinputhandler.py new file mode 100644 index 000000000..7f721d4aa --- /dev/null +++ b/examples/datavisualization/graphgallery/axesinputhandler.py @@ -0,0 +1,101 @@ +# Copyright (C) 2023 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from enum import Enum +from math import sin, cos, degrees + +from PySide6.QtCore import Qt +from PySide6.QtDataVisualization import QAbstract3DGraph, Q3DInputHandler + + +class InputState(Enum): + StateNormal = 0 + StateDraggingX = 1 + StateDraggingZ = 2 + StateDraggingY = 3 + + +class AxesInputHandler(Q3DInputHandler): + + def __init__(self, graph, parent=None): + super().__init__(parent) + self._mousePressed = False + self._state = InputState.StateNormal + self._axisX = None + self._axisZ = None + self._axisY = None + self._speedModifier = 15.0 + + # Connect to the item selection signal from graph + graph.selectedElementChanged.connect(self.handleElementSelected) + + def setAxes(self, axisX, axisZ, axisY): + self._axisX = axisX + self._axisZ = axisZ + self._axisY = axisY + + def setDragSpeedModifier(self, modifier): + self._speedModifier = modifier + + def mousePressEvent(self, event, mousePos): + super().mousePressEvent(event, mousePos) + if Qt.LeftButton == event.button(): + self._mousePressed = True + + def mouseMoveEvent(self, event, mousePos): + # Check if we're trying to drag axis label + if self._mousePressed and self._state != InputState.StateNormal: + self.setPreviousInputPos(self.inputPosition()) + self.setInputPosition(mousePos) + self.handleAxisDragging() + else: + super().mouseMoveEvent(event, mousePos) + + def mouseReleaseEvent(self, event, mousePos): + super().mouseReleaseEvent(event, mousePos) + self._mousePressed = False + self._state = InputState.StateNormal + + def handleElementSelected(self, type): + if type == QAbstract3DGraph.ElementAxisXLabel: + self._state = InputState.StateDraggingX + elif type == QAbstract3DGraph.ElementAxisYLabel: + self._state = InputState.StateDraggingY + elif type == QAbstract3DGraph.ElementAxisZLabel: + self._state = InputState.StateDraggingZ + else: + self._state = InputState.StateNormal + + def handleAxisDragging(self): + distance = 0.0 + # Get scene orientation from active camera + ac = self.scene().activeCamera() + xRotation = ac.xRotation() + yRotation = ac.yRotation() + + # Calculate directional drag multipliers based on rotation + xMulX = cos(degrees(xRotation)) + xMulY = sin(degrees(xRotation)) + zMulX = sin(degrees(xRotation)) + zMulY = cos(degrees(xRotation)) + + # Get the drag amount + move = self.inputPosition() - self.previousInputPos() + + # Flip the effect of y movement if we're viewing from below + yMove = -move.y() if yRotation < 0 else move.y() + + # Adjust axes + if self._state == InputState.StateDraggingX: + distance = (move.x() * xMulX - yMove * xMulY) / self._speedModifier + self._axisX.setRange(self._axisX.min() - distance, + self._axisX.max() - distance) + elif self._state == InputState.StateDraggingZ: + distance = (move.x() * zMulX + yMove * zMulY) / self._speedModifier + self._axisZ.setRange(self._axisZ.min() + distance, + self._axisZ.max() + distance) + elif self._state == InputState.StateDraggingY: + # No need to use adjusted y move here + distance = move.y() / self._speedModifier + self._axisY.setRange(self._axisY.min() + distance, + self._axisY.max() + distance) diff --git a/examples/datavisualization/graphgallery/bargraph.py b/examples/datavisualization/graphgallery/bargraph.py new file mode 100644 index 000000000..6c61d6708 --- /dev/null +++ b/examples/datavisualization/graphgallery/bargraph.py @@ -0,0 +1,281 @@ +# Copyright (C) 2023 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from graphmodifier import GraphModifier + +from PySide6.QtCore import QObject, Qt +from PySide6.QtGui import QFont +from PySide6.QtWidgets import (QButtonGroup, QCheckBox, QComboBox, QFontComboBox, + QLabel, QPushButton, QHBoxLayout, QSizePolicy, + QRadioButton, QSlider, QVBoxLayout, QWidget) +from PySide6.QtDataVisualization import (QAbstract3DGraph, QAbstract3DSeries, + Q3DBars) + + +class BarGraph(QObject): + + def __init__(self): + super().__init__() + self._barsGraph = Q3DBars() + self._container = None + self._barsWidget = None + + def barsWidget(self): + return self._barsWidget + + def initialize(self, minimum_graph_size, maximum_graph_size): + if not self._barsGraph.hasContext(): + return False + + self._barsWidget = QWidget() + hLayout = QHBoxLayout(self._barsWidget) + self._container = QWidget.createWindowContainer(self._barsGraph, + self._barsWidget) + self._container.setMinimumSize(minimum_graph_size) + self._container.setMaximumSize(maximum_graph_size) + self._container.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding) + self._container.setFocusPolicy(Qt.StrongFocus) + hLayout.addWidget(self._container, 1) + + vLayout = QVBoxLayout() + hLayout.addLayout(vLayout) + + themeList = QComboBox(self._barsWidget) + themeList.addItem("Qt") + themeList.addItem("Primary Colors") + themeList.addItem("Digia") + themeList.addItem("Stone Moss") + themeList.addItem("Army Blue") + themeList.addItem("Retro") + themeList.addItem("Ebony") + themeList.addItem("Isabelle") + themeList.setCurrentIndex(0) + + labelButton = QPushButton(self._barsWidget) + labelButton.setText("Change label style") + + smoothCheckBox = QCheckBox(self._barsWidget) + smoothCheckBox.setText("Smooth bars") + smoothCheckBox.setChecked(False) + + barStyleList = QComboBox(self._barsWidget) + barStyleList.addItem("Bar", QAbstract3DSeries.MeshBar) + barStyleList.addItem("Pyramid", QAbstract3DSeries.MeshPyramid) + barStyleList.addItem("Cone", QAbstract3DSeries.MeshCone) + barStyleList.addItem("Cylinder", QAbstract3DSeries.MeshCylinder) + barStyleList.addItem("Bevel bar", QAbstract3DSeries.MeshBevelBar) + barStyleList.addItem("Sphere", QAbstract3DSeries.MeshSphere) + barStyleList.setCurrentIndex(4) + + cameraButton = QPushButton(self._barsWidget) + cameraButton.setText("Change camera preset") + + zoomToSelectedButton = QPushButton(self._barsWidget) + zoomToSelectedButton.setText("Zoom to selected bar") + + selectionModeList = QComboBox(self._barsWidget) + selectionModeList.addItem("None", QAbstract3DGraph.SelectionNone) + selectionModeList.addItem("Bar", QAbstract3DGraph.SelectionItem) + selectionModeList.addItem("Row", QAbstract3DGraph.SelectionRow) + sel = QAbstract3DGraph.SelectionItemAndRow + selectionModeList.addItem("Bar and Row", sel) + selectionModeList.addItem("Column", QAbstract3DGraph.SelectionColumn) + sel = QAbstract3DGraph.SelectionItemAndColumn + selectionModeList.addItem("Bar and Column", sel) + sel = QAbstract3DGraph.SelectionRowAndColumn + selectionModeList.addItem("Row and Column", sel) + sel = QAbstract3DGraph.SelectionItemRowAndColumn + selectionModeList.addItem("Bar, Row and Column", sel) + sel = QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionRow + selectionModeList.addItem("Slice into Row", sel) + sel = QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionItemAndRow + selectionModeList.addItem("Slice into Row and Item", sel) + sel = QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionColumn + selectionModeList.addItem("Slice into Column", sel) + sel = (QAbstract3DGraph.SelectionSlice + | QAbstract3DGraph.SelectionItemAndColumn) + selectionModeList.addItem("Slice into Column and Item", sel) + sel = (QAbstract3DGraph.SelectionItemRowAndColumn + | QAbstract3DGraph.SelectionMultiSeries) + selectionModeList.addItem("Multi: Bar, Row, Col", sel) + sel = (QAbstract3DGraph.SelectionSlice + | QAbstract3DGraph.SelectionItemAndRow + | QAbstract3DGraph.SelectionMultiSeries) + selectionModeList.addItem("Multi, Slice: Row, Item", sel) + sel = (QAbstract3DGraph.SelectionSlice + | QAbstract3DGraph.SelectionItemAndColumn + | QAbstract3DGraph.SelectionMultiSeries) + selectionModeList.addItem("Multi, Slice: Col, Item", sel) + selectionModeList.setCurrentIndex(1) + + backgroundCheckBox = QCheckBox(self._barsWidget) + backgroundCheckBox.setText("Show background") + backgroundCheckBox.setChecked(False) + + gridCheckBox = QCheckBox(self._barsWidget) + gridCheckBox.setText("Show grid") + gridCheckBox.setChecked(True) + + seriesCheckBox = QCheckBox(self._barsWidget) + seriesCheckBox.setText("Show second series") + seriesCheckBox.setChecked(False) + + reverseValueAxisCheckBox = QCheckBox(self._barsWidget) + reverseValueAxisCheckBox.setText("Reverse value axis") + reverseValueAxisCheckBox.setChecked(False) + + reflectionCheckBox = QCheckBox(self._barsWidget) + reflectionCheckBox.setText("Show reflections") + reflectionCheckBox.setChecked(False) + + rotationSliderX = QSlider(Qt.Horizontal, self._barsWidget) + rotationSliderX.setTickInterval(30) + rotationSliderX.setTickPosition(QSlider.TicksBelow) + rotationSliderX.setMinimum(-180) + rotationSliderX.setValue(0) + rotationSliderX.setMaximum(180) + rotationSliderY = QSlider(Qt.Horizontal, self._barsWidget) + rotationSliderY.setTickInterval(15) + rotationSliderY.setTickPosition(QSlider.TicksAbove) + rotationSliderY.setMinimum(-90) + rotationSliderY.setValue(0) + rotationSliderY.setMaximum(90) + + fontSizeSlider = QSlider(Qt.Horizontal, self._barsWidget) + fontSizeSlider.setTickInterval(10) + fontSizeSlider.setTickPosition(QSlider.TicksBelow) + fontSizeSlider.setMinimum(1) + fontSizeSlider.setValue(30) + fontSizeSlider.setMaximum(100) + + fontList = QFontComboBox(self._barsWidget) + fontList.setCurrentFont(QFont("Times New Roman")) + + shadowQuality = QComboBox(self._barsWidget) + shadowQuality.addItem("None") + shadowQuality.addItem("Low") + shadowQuality.addItem("Medium") + shadowQuality.addItem("High") + shadowQuality.addItem("Low Soft") + shadowQuality.addItem("Medium Soft") + shadowQuality.addItem("High Soft") + shadowQuality.setCurrentIndex(5) + + rangeList = QComboBox(self._barsWidget) + rangeList.addItem("2015") + rangeList.addItem("2016") + rangeList.addItem("2017") + rangeList.addItem("2018") + rangeList.addItem("2019") + rangeList.addItem("2020") + rangeList.addItem("2021") + rangeList.addItem("2022") + rangeList.addItem("All") + rangeList.setCurrentIndex(8) + + axisTitlesVisibleCB = QCheckBox(self._barsWidget) + axisTitlesVisibleCB.setText("Axis titles visible") + axisTitlesVisibleCB.setChecked(True) + + axisTitlesFixedCB = QCheckBox(self._barsWidget) + axisTitlesFixedCB.setText("Axis titles fixed") + axisTitlesFixedCB.setChecked(True) + + axisLabelRotationSlider = QSlider(Qt.Horizontal, self._barsWidget) + axisLabelRotationSlider.setTickInterval(10) + axisLabelRotationSlider.setTickPosition(QSlider.TicksBelow) + axisLabelRotationSlider.setMinimum(0) + axisLabelRotationSlider.setValue(30) + axisLabelRotationSlider.setMaximum(90) + + modeGroup = QButtonGroup(self._barsWidget) + modeWeather = QRadioButton("Temperature Data", self._barsWidget) + modeWeather.setChecked(True) + modeCustomProxy = QRadioButton("Custom Proxy Data", self._barsWidget) + modeGroup.addButton(modeWeather) + modeGroup.addButton(modeCustomProxy) + + vLayout.addWidget(QLabel("Rotate horizontally")) + vLayout.addWidget(rotationSliderX, 0, Qt.AlignTop) + vLayout.addWidget(QLabel("Rotate vertically")) + vLayout.addWidget(rotationSliderY, 0, Qt.AlignTop) + vLayout.addWidget(labelButton, 0, Qt.AlignTop) + vLayout.addWidget(cameraButton, 0, Qt.AlignTop) + vLayout.addWidget(zoomToSelectedButton, 0, Qt.AlignTop) + vLayout.addWidget(backgroundCheckBox) + vLayout.addWidget(gridCheckBox) + vLayout.addWidget(smoothCheckBox) + vLayout.addWidget(reflectionCheckBox) + vLayout.addWidget(seriesCheckBox) + vLayout.addWidget(reverseValueAxisCheckBox) + vLayout.addWidget(axisTitlesVisibleCB) + vLayout.addWidget(axisTitlesFixedCB) + vLayout.addWidget(QLabel("Show year")) + vLayout.addWidget(rangeList) + vLayout.addWidget(QLabel("Change bar style")) + vLayout.addWidget(barStyleList) + vLayout.addWidget(QLabel("Change selection mode")) + vLayout.addWidget(selectionModeList) + vLayout.addWidget(QLabel("Change theme")) + vLayout.addWidget(themeList) + vLayout.addWidget(QLabel("Adjust shadow quality")) + vLayout.addWidget(shadowQuality) + vLayout.addWidget(QLabel("Change font")) + vLayout.addWidget(fontList) + vLayout.addWidget(QLabel("Adjust font size")) + vLayout.addWidget(fontSizeSlider) + vLayout.addWidget(QLabel("Axis label rotation")) + vLayout.addWidget(axisLabelRotationSlider, 0, Qt.AlignTop) + vLayout.addWidget(modeWeather, 0, Qt.AlignTop) + vLayout.addWidget(modeCustomProxy, 1, Qt.AlignTop) + + self._modifier = GraphModifier(self._barsGraph, self) + + rotationSliderX.valueChanged.connect(self._modifier.rotateX) + rotationSliderY.valueChanged.connect(self._modifier.rotateY) + + labelButton.clicked.connect(self._modifier.changeLabelBackground) + cameraButton.clicked.connect(self._modifier.changePresetCamera) + zoomToSelectedButton.clicked.connect(self._modifier.zoomToSelectedBar) + + backgroundCheckBox.stateChanged.connect(self._modifier.setBackgroundEnabled) + gridCheckBox.stateChanged.connect(self._modifier.setGridEnabled) + smoothCheckBox.stateChanged.connect(self._modifier.setSmoothBars) + seriesCheckBox.stateChanged.connect(self._modifier.setSeriesVisibility) + reverseValueAxisCheckBox.stateChanged.connect(self._modifier.setReverseValueAxis) + reflectionCheckBox.stateChanged.connect(self._modifier.setReflection) + + self._modifier.backgroundEnabledChanged.connect(backgroundCheckBox.setChecked) + self._modifier.gridEnabledChanged.connect(gridCheckBox.setChecked) + + rangeList.currentIndexChanged.connect(self._modifier.changeRange) + + barStyleList.currentIndexChanged.connect(self._modifier.changeStyle) + + selectionModeList.currentIndexChanged.connect(self._modifier.changeSelectionMode) + + themeList.currentIndexChanged.connect(self._modifier.changeTheme) + + shadowQuality.currentIndexChanged.connect(self._modifier.changeShadowQuality) + + self._modifier.shadowQualityChanged.connect(shadowQuality.setCurrentIndex) + self._barsGraph.shadowQualityChanged.connect(self._modifier.shadowQualityUpdatedByVisual) + + fontSizeSlider.valueChanged.connect(self._modifier.changeFontSize) + fontList.currentFontChanged.connect(self._modifier.changeFont) + + self._modifier.fontSizeChanged.connect(fontSizeSlider.setValue) + self._modifier.fontChanged.connect(fontList.setCurrentFont) + + axisTitlesVisibleCB.stateChanged.connect(self._modifier.setAxisTitleVisibility) + axisTitlesFixedCB.stateChanged.connect(self._modifier.setAxisTitleFixed) + axisLabelRotationSlider.valueChanged.connect(self._modifier.changeLabelRotation) + + modeWeather.toggled.connect(self._modifier.setDataModeToWeather) + modeCustomProxy.toggled.connect(self._modifier.setDataModeToCustom) + modeWeather.toggled.connect(seriesCheckBox.setEnabled) + modeWeather.toggled.connect(rangeList.setEnabled) + modeWeather.toggled.connect(axisTitlesVisibleCB.setEnabled) + modeWeather.toggled.connect(axisTitlesFixedCB.setEnabled) + modeWeather.toggled.connect(axisLabelRotationSlider.setEnabled) + return True diff --git a/examples/datavisualization/graphgallery/custominputhandler.py b/examples/datavisualization/graphgallery/custominputhandler.py new file mode 100644 index 000000000..0402be607 --- /dev/null +++ b/examples/datavisualization/graphgallery/custominputhandler.py @@ -0,0 +1,177 @@ +# Copyright (C) 2023 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from enum import Enum +from math import sin, cos, degrees + +from PySide6.QtCore import Qt +from PySide6.QtDataVisualization import (QAbstract3DGraph, Q3DInputHandler) + + +class InputState(Enum): + StateNormal = 0 + StateDraggingX = 1 + StateDraggingZ = 2 + StateDraggingY = 3 + + +class CustomInputHandler(Q3DInputHandler): + + def __init__(self, graph, parent=None): + super().__init__(parent) + self._highlight = None + self._mousePressed = False + self._state = InputState.StateNormal + self._axisX = None + self._axisY = None + self._axisZ = None + self._speedModifier = 20.0 + self._aspectRatio = 0.0 + self._axisXMinValue = 0.0 + self._axisXMaxValue = 0.0 + self._axisXMinRange = 0.0 + self._axisZMinValue = 0.0 + self._axisZMaxValue = 0.0 + self._axisZMinRange = 0.0 + self._areaMinValue = 0.0 + self._areaMaxValue = 0.0 + + # Connect to the item selection signal from graph + graph.selectedElementChanged.connect(self.handleElementSelected) + + def setAspectRatio(self, ratio): + self._aspectRatio = ratio + + def setHighlightSeries(self, series): + self._highlight = series + + def setDragSpeedModifier(self, modifier): + self._speedModifier = modifier + + def setLimits(self, min, max, minRange): + self._areaMinValue = min + self._areaMaxValue = max + self._axisXMinValue = self._areaMinValue + self._axisXMaxValue = self._areaMaxValue + self._axisZMinValue = self._areaMinValue + self._axisZMaxValue = self._areaMaxValue + self._axisXMinRange = minRange + self._axisZMinRange = minRange + + def setAxes(self, axisX, axisY, axisZ): + self._axisX = axisX + self._axisY = axisY + self._axisZ = axisZ + + def mousePressEvent(self, event, mousePos): + if Qt.LeftButton == event.button(): + self._highlight.setVisible(False) + self._mousePressed = True + super().mousePressEvent(event, mousePos) + + def wheelEvent(self, event): + delta = float(event.angleDelta().y()) + + self._axisXMinValue += delta + self._axisXMaxValue -= delta + self._axisZMinValue += delta + self._axisZMaxValue -= delta + self.checkConstraints() + + y = (self._axisXMaxValue - self._axisXMinValue) * self._aspectRatio + + self._axisX.setRange(self._axisXMinValue, self._axisXMaxValue) + self._axisY.setRange(100.0, y) + self._axisZ.setRange(self._axisZMinValue, self._axisZMaxValue) + + def mouseMoveEvent(self, event, mousePos): + # Check if we're trying to drag axis label + if self._mousePressed and self._state != InputState.StateNormal: + self.setPreviousInputPos(self.inputPosition()) + self.setInputPosition(mousePos) + self.handleAxisDragging() + else: + super().mouseMoveEvent(event, mousePos) + + def mouseReleaseEvent(self, event, mousePos): + super().mouseReleaseEvent(event, mousePos) + self._mousePressed = False + self._state = InputState.StateNormal + + def handleElementSelected(self, type): + if type == QAbstract3DGraph.ElementAxisXLabel: + self._state = InputState.StateDraggingX + elif type == QAbstract3DGraph.ElementAxisZLabel: + self._state = InputState.StateDraggingZ + else: + self._state = InputState.StateNormal + + def handleAxisDragging(self): + distance = 0.0 + + # Get scene orientation from active camera + xRotation = self.scene().activeCamera().xRotation() + + # Calculate directional drag multipliers based on rotation + xMulX = cos(degrees(xRotation)) + xMulY = sin(degrees(xRotation)) + zMulX = xMulY + zMulY = xMulX + + # Get the drag amount + move = self.inputPosition() - self.previousInputPos() + + # Adjust axes + if self._state == InputState.StateDraggingX: + distance = (move.x() * xMulX - move.y() * xMulY) * self._speedModifier + self._axisXMinValue -= distance + self._axisXMaxValue -= distance + if self._axisXMinValue < self._areaMinValue: + dist = self._axisXMaxValue - self._axisXMinValue + self._axisXMinValue = self._areaMinValue + self._axisXMaxValue = self._axisXMinValue + dist + + if self._axisXMaxValue > self._areaMaxValue: + dist = self._axisXMaxValue - self._axisXMinValue + self._axisXMaxValue = self._areaMaxValue + self._axisXMinValue = self._axisXMaxValue - dist + + self._axisX.setRange(self._axisXMinValue, self._axisXMaxValue) + elif self._state == InputState.StateDraggingZ: + distance = (move.x() * zMulX + move.y() * zMulY) * self._speedModifier + self._axisZMinValue += distance + self._axisZMaxValue += distance + if self._axisZMinValue < self._areaMinValue: + dist = self._axisZMaxValue - self._axisZMinValue + self._axisZMinValue = self._areaMinValue + self._axisZMaxValue = self._axisZMinValue + dist + + if self._axisZMaxValue > self._areaMaxValue: + dist = self._axisZMaxValue - self._axisZMinValue + self._axisZMaxValue = self._areaMaxValue + self._axisZMinValue = self._axisZMaxValue - dist + + self._axisZ.setRange(self._axisZMinValue, self._axisZMaxValue) + + def checkConstraints(self): + if self._axisXMinValue < self._areaMinValue: + self._axisXMinValue = self._areaMinValue + if self._axisXMaxValue > self._areaMaxValue: + self._axisXMaxValue = self._areaMaxValue + # Don't allow too much zoom in + range = self._axisXMaxValue - self._axisXMinValue + if range < self._axisXMinRange: + adjust = (self._axisXMinRange - range) / 2.0 + self._axisXMinValue -= adjust + self._axisXMaxValue += adjust + + if self._axisZMinValue < self._areaMinValue: + self._axisZMinValue = self._areaMinValue + if self._axisZMaxValue > self._areaMaxValue: + self._axisZMaxValue = self._areaMaxValue + # Don't allow too much zoom in + range = self._axisZMaxValue - self._axisZMinValue + if range < self._axisZMinRange: + adjust = (self._axisZMinRange - range) / 2.0 + self._axisZMinValue -= adjust + self._axisZMaxValue += adjust diff --git a/examples/datavisualization/graphgallery/data/layer_1.png b/examples/datavisualization/graphgallery/data/layer_1.png Binary files differnew file mode 100644 index 000000000..9138c710a --- /dev/null +++ b/examples/datavisualization/graphgallery/data/layer_1.png diff --git a/examples/datavisualization/graphgallery/data/layer_2.png b/examples/datavisualization/graphgallery/data/layer_2.png Binary files differnew file mode 100644 index 000000000..61631ae8b --- /dev/null +++ b/examples/datavisualization/graphgallery/data/layer_2.png diff --git a/examples/datavisualization/graphgallery/data/layer_3.png b/examples/datavisualization/graphgallery/data/layer_3.png Binary files differnew file mode 100644 index 000000000..066ffbe75 --- /dev/null +++ b/examples/datavisualization/graphgallery/data/layer_3.png diff --git a/examples/datavisualization/graphgallery/data/license.txt b/examples/datavisualization/graphgallery/data/license.txt new file mode 100644 index 000000000..749daf31f --- /dev/null +++ b/examples/datavisualization/graphgallery/data/license.txt @@ -0,0 +1,77 @@ +License information regarding the data obtained from National Land Survey of +Finland http://www.maanmittauslaitos.fi/en +- topographic model from Elevation model 2 m (U4421B, U4421D, U4422A and + U4422C) 08/2014 +- map image extracted from Topographic map raster 1:50 000 (U442) 08/2014 + +National Land Survey open data licence - version 1.0 - 1 May 2012 + +1. General information + +The National Land Survey of Finland (hereinafter the Licensor), as the holder +of the immaterial rights to the data, has granted on the terms mentioned below +the right to use a copy (hereinafter data or dataset(s)) of the data (or a part +of it). + +The Licensee is a natural or legal person who makes use of the data covered by +this licence. The Licensee accepts the terms of this licence by receiving the +dataset(s) covered by the licence. + +This Licence agreement does not create a co-operation or business relationship +between the Licensee and the Licensor. + +2. Terms of the licence + +2.1. Right of use + +This licence grants a worldwide, free of charge and irrevocable parallel right +of use to open data. According to the terms of the licence, data received by +the Licensee can be freely: + - copied, distributed and published, + - modified and utilised commercially and non-commercially, + - inserted into other products and + - used as a part of a software application or service. + +2.2. Duties and responsibilities of the Licensee + +Through reasonable means suitable to the distribution medium or method which is +used in conjunction with a product containing data or a service utilising data +covered by this licence or while distributing data, the Licensee shall: + - mention the name of the Licensor, the name of the dataset(s) and the time + when the National Land Survey has delivered the dataset(s) (e.g.: contains + data from the National Land Survey of Finland Topographic Database 06/2012) + - provide a copy of this licence or a link to it, as well as + - require third parties to provide the same information when granting rights + to copies of dataset(s) or products and services containing such data and + - remove the name of the Licensor from the product or service, if required to + do so by the Licensor. + +The terms of this licence do not allow the Licensee to state in conjunction +with the use of dataset(s) that the Licensor supports or recommends such use. + +2.3. Duties and responsibilities of the Licensor + +The Licensor shall ensure that + - the Licensor has the right to grant rights to the dataset(s) in accordance + with this licence. + +The data has been licensed "as is" and the Licensor + - shall not be held responsible for any errors or omissions in the data, + disclaims any warranty for the validity or up to date status of the data and + shall be free from liability for direct or consequential damages arising + from the use of data provided by the Licensor, + - and is not obligated to ensure the continuous availability of the data, nor + to announce in advance the interruption or cessation of availability, and + the Licensor shall be free from liability for direct or consequential + damages arising from any such interruption or cessation. + +3. Jurisdiction + +Finnish law shall apply to this licence. + +4. Changes to this licence + +The Licensor may at any time change the terms of the licence or apply a +different licence to the data. The terms of this licence shall, however, still +apply to such data that has been received prior to the change of the terms of +the licence or the licence itself. diff --git a/examples/datavisualization/graphgallery/data/maptexture.jpg b/examples/datavisualization/graphgallery/data/maptexture.jpg Binary files differnew file mode 100644 index 000000000..ae5d66ebe --- /dev/null +++ b/examples/datavisualization/graphgallery/data/maptexture.jpg diff --git a/examples/datavisualization/graphgallery/data/oilrig.obj b/examples/datavisualization/graphgallery/data/oilrig.obj new file mode 100644 index 000000000..c3b6ea570 --- /dev/null +++ b/examples/datavisualization/graphgallery/data/oilrig.obj @@ -0,0 +1,2322 @@ +# Blender v2.66 (sub 0) OBJ File: 'oilrig.blend' +# www.blender.org +v 0.057462 2.272318 -1.170324 +v 0.057461 8.181165 -0.128434 +v 0.055540 2.268930 -1.151111 +v 0.055539 8.177776 -0.109221 +v 0.049849 2.265673 -1.132637 +v 0.049849 8.174520 -0.090747 +v 0.040608 2.262671 -1.115611 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