aboutsummaryrefslogtreecommitdiffstats
path: root/examples/multimedia/screencapture
diff options
context:
space:
mode:
Diffstat (limited to 'examples/multimedia/screencapture')
-rw-r--r--examples/multimedia/screencapture/doc/screencapture.rst42
-rw-r--r--examples/multimedia/screencapture/doc/screencapture.webpbin0 -> 53592 bytes
-rw-r--r--examples/multimedia/screencapture/main.py20
-rw-r--r--examples/multimedia/screencapture/screencapture.pyproject3
-rw-r--r--examples/multimedia/screencapture/screencapturepreview.py162
-rw-r--r--examples/multimedia/screencapture/screenlistmodel.py38
-rw-r--r--examples/multimedia/screencapture/windowlistmodel.py30
7 files changed, 295 insertions, 0 deletions
diff --git a/examples/multimedia/screencapture/doc/screencapture.rst b/examples/multimedia/screencapture/doc/screencapture.rst
new file mode 100644
index 000000000..116d7773b
--- /dev/null
+++ b/examples/multimedia/screencapture/doc/screencapture.rst
@@ -0,0 +1,42 @@
+Screen Capture Example
+======================
+
+Screen Capture demonstrates how to capture a screen or window using
+``QScreenCapture`` and ``QWindowCapture``. The example shows a list of screens
+and windows and displays a live preview of the selected item using a
+``QMediaCaptureSession`` and a ``QVideoWidget``. Capturing can be started and
+stopped with a ``QPushButton``.
+
+Application Structure
++++++++++++++++++++++
+
+The example consists of three custom classes. The UI and all screen capture
+functionality is implemented in the class ``ScreenCapturePreview``. The classes
+``ScreenListModel`` and ``WindowListModel`` only serve as models behind the two
+``QListView`` widgets. The main function creates a ``ScreenCapturePreview``
+object, which in turn creates instances of ``QScreenCapture`` and
+``QWindowCapture``, and a ``QMediaCaptureSession`` and ``QVideoWidget``, in
+addition to all the UI widgets.
+
+The screen and window models are populated with the return values of
+``QGuiApplication.screens()`` and ``QWindowCapture.capturableWindows()``,
+respectively.
+
+When a list item is selected, it is connected to the ``QScreenCapture`` object
+with ``QScreenCapture.setScreen()``, or to the ``QWindowCapture`` object with
+``QWindowCapture.setWindow().`` The capture object is connected to the
+``QMediaCaptureSession`` object with
+``QMediaCaptureSession.setScreenCapture()`` and
+``QMediaCaptureSession.setWindowCapture()``, respectively. The capture session
+in turn is connected to the ``QVideoWidget`` object with
+``QMediaCaptureSession.setVideoOutput()``. Thus, the capture output is
+previewed in the video widget on the right hand side of the UI.
+
+The start/stop button calls ``QScreenCapture.start()`` and ``QScreenCapture.stop()``,
+or ``QWindowCapture.start()`` and ``QWindowCapture.stop()``.
+
+A QMessageBox pops up if an ``errorOccurred`` signal is emitted.
+
+.. image. screencapture.webp
+ :width: 600
+ :alt: screen capture example
diff --git a/examples/multimedia/screencapture/doc/screencapture.webp b/examples/multimedia/screencapture/doc/screencapture.webp
new file mode 100644
index 000000000..58ad36c7f
--- /dev/null
+++ b/examples/multimedia/screencapture/doc/screencapture.webp
Binary files differ
diff --git a/examples/multimedia/screencapture/main.py b/examples/multimedia/screencapture/main.py
new file mode 100644
index 000000000..f445bac03
--- /dev/null
+++ b/examples/multimedia/screencapture/main.py
@@ -0,0 +1,20 @@
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+"""PySide6 port of the QtMultiMedia Screen Capture Example from Qt v6.x"""
+
+import sys
+
+from PySide6.QtCore import QCoreApplication
+from PySide6.QtWidgets import QApplication
+
+from screencapturepreview import ScreenCapturePreview
+
+
+if __name__ == "__main__":
+ app = QApplication(sys.argv)
+ QCoreApplication.setApplicationName("screencapture")
+ QCoreApplication.setOrganizationName("QtProject")
+ screen_capture_preview = ScreenCapturePreview()
+ screen_capture_preview.show()
+ sys.exit(app.exec())
diff --git a/examples/multimedia/screencapture/screencapture.pyproject b/examples/multimedia/screencapture/screencapture.pyproject
new file mode 100644
index 000000000..dfec6c901
--- /dev/null
+++ b/examples/multimedia/screencapture/screencapture.pyproject
@@ -0,0 +1,3 @@
+{
+ "files": ["main.py", "screencapturepreview.py", "screenlistmodel.py", "windowlistmodel.py"]
+}
diff --git a/examples/multimedia/screencapture/screencapturepreview.py b/examples/multimedia/screencapture/screencapturepreview.py
new file mode 100644
index 000000000..c7e0c596a
--- /dev/null
+++ b/examples/multimedia/screencapture/screencapturepreview.py
@@ -0,0 +1,162 @@
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+from enum import Enum, auto
+
+from PySide6.QtMultimediaWidgets import QVideoWidget
+from PySide6.QtMultimedia import (QCapturableWindow, QMediaCaptureSession,
+ QScreenCapture, QWindowCapture)
+from PySide6.QtWidgets import (QGridLayout, QLabel, QListView,
+ QMessageBox, QPushButton, QWidget)
+from PySide6.QtGui import QAction, QGuiApplication
+from PySide6.QtCore import QItemSelection, Qt, Slot
+
+from screenlistmodel import ScreenListModel
+from windowlistmodel import WindowListModel
+
+
+class SourceType(Enum):
+ Screen = auto()
+ Window = auto()
+
+
+class ScreenCapturePreview(QWidget):
+
+ def __init__(self, parent=None):
+ super().__init__(parent)
+
+ self._source = SourceType.Screen
+
+ self._screen_capture = QScreenCapture(self)
+ self._media_capture_session = QMediaCaptureSession(self)
+ self._video_widget = QVideoWidget(self)
+ self._screen_list_view = QListView(self)
+ self._screen_label = QLabel("Select screen to capture:", self)
+ self._video_widget_label = QLabel("Capture output:", self)
+ self._start_stop_button = QPushButton(self)
+ self._status_label = QLabel(self)
+
+ self._screen_list_model = ScreenListModel(self)
+
+ # Setup QScreenCapture with initial source:
+ self.setScreen(QGuiApplication.primaryScreen())
+ self._screen_capture.start()
+ self._media_capture_session.setScreenCapture(self._screen_capture)
+ self._media_capture_session.setVideoOutput(self._video_widget)
+
+ self._screen_list_view.setModel(self._screen_list_model)
+
+ self._window_list_view = QListView(self)
+ self._window_capture = QWindowCapture(self)
+ self._media_capture_session.setWindowCapture(self._window_capture)
+ self._window_label = QLabel("Select window to capture:", self)
+
+ self._window_list_model = WindowListModel(self)
+ self._window_list_view.setModel(self._window_list_model)
+ update_action = QAction("Update windows List", self)
+ update_action.triggered.connect(self._window_list_model.populate)
+ self._window_list_view.addAction(update_action)
+ self._window_list_view.setContextMenuPolicy(Qt.ActionsContextMenu)
+
+ grid_layout = QGridLayout(self)
+ grid_layout.addWidget(self._screen_label, 0, 0)
+ grid_layout.addWidget(self._screen_list_view, 1, 0)
+ grid_layout.addWidget(self._start_stop_button, 4, 0)
+ grid_layout.addWidget(self._video_widget_label, 0, 1)
+ grid_layout.addWidget(self._video_widget, 1, 1, 4, 1)
+ grid_layout.addWidget(self._window_label, 2, 0)
+ grid_layout.addWidget(self._window_list_view, 3, 0)
+ grid_layout.addWidget(self._status_label, 5, 0, 1, 2)
+
+ grid_layout.setColumnStretch(1, 1)
+ grid_layout.setRowStretch(1, 1)
+ grid_layout.setColumnMinimumWidth(0, 400)
+ grid_layout.setColumnMinimumWidth(1, 400)
+ grid_layout.setRowMinimumHeight(3, 1)
+
+ selection_model = self._screen_list_view.selectionModel()
+ selection_model.selectionChanged.connect(self.on_current_screen_selection_changed)
+ selection_model = self._window_list_view.selectionModel()
+ selection_model.selectionChanged.connect(self.on_current_window_selection_changed)
+
+ self._start_stop_button.clicked.connect(self.on_start_stop_button_clicked)
+ self._screen_capture.errorOccurred.connect(self.on_screen_capture_error_occured,
+ Qt.QueuedConnection)
+ self._window_capture.errorOccurred.connect(self.on_window_capture_error_occured,
+ Qt.QueuedConnection)
+ self.update_active(SourceType.Screen, True)
+
+ @Slot(QItemSelection)
+ def on_current_screen_selection_changed(self, selection):
+ self.clear_error_string()
+ indexes = selection.indexes()
+ if indexes:
+ self._screen_capture.setScreen(self._screen_list_model.screen(indexes[0]))
+ self.update_active(SourceType.Screen, self.is_active())
+ self._window_list_view.clearSelection()
+ else:
+ self._screen_capture.setScreen(None)
+
+ @Slot(QItemSelection)
+ def on_current_window_selection_changed(self, selection):
+ self.clear_error_string()
+ indexes = selection.indexes()
+ if indexes:
+ window = self._window_list_model.window(indexes[0])
+ if not window.isValid():
+ m = "The window is no longer valid. Update the list of windows?"
+ answer = QMessageBox.question(self, "Invalid window", m)
+ if answer == QMessageBox.Yes:
+ self.update_active(SourceType.Window, False)
+ self._window_list_view.clearSelection()
+ self._window_list_model.populate()
+ return
+ self._window_capture.setWindow(window)
+ self.update_active(SourceType.Window, self.is_active())
+ self._screen_list_view.clearSelection()
+ else:
+ self._window_capture.setWindow(QCapturableWindow())
+
+ @Slot(QWindowCapture.Error, str)
+ def on_window_capture_error_occured(self, error, error_string):
+ self.set_error_string("QWindowCapture: Error occurred " + error_string)
+
+ @Slot(QScreenCapture.Error, str)
+ def on_screen_capture_error_occured(self, error, error_string):
+ self.set_error_string("QScreenCapture: Error occurred " + error_string)
+
+ def set_error_string(self, t):
+ self._status_label.setStyleSheet("background-color: rgb(255, 0, 0);")
+ self._status_label.setText(t)
+
+ def clear_error_string(self):
+ self._status_label.clear()
+ self._status_label.setStyleSheet("")
+
+ @Slot()
+ def on_start_stop_button_clicked(self):
+ self.clear_error_string()
+ self.update_active(self._source_type, not self.is_active())
+
+ def update_start_stop_button_text(self):
+ active = self.is_active()
+ if self._source_type == SourceType.Window:
+ m = "Stop window capture" if active else "Start window capture"
+ self._start_stop_button.setText(m)
+ elif self._source_type == SourceType.Screen:
+ m = "Stop screen capture" if active else "Start screen capture"
+ self._start_stop_button.setText(m)
+
+ def update_active(self, source_type, active):
+ self._source_type = source_type
+ self._screen_capture.setActive(active and source_type == SourceType.Screen)
+ self._window_capture.setActive(active and source_type == SourceType.Window)
+
+ self.update_start_stop_button_text()
+
+ def is_active(self):
+ if self._source_type == SourceType.Window:
+ return self._window_capture.isActive()
+ if self._source_type == SourceType.Screen:
+ return self._screen_capture.isActive()
+ return False
diff --git a/examples/multimedia/screencapture/screenlistmodel.py b/examples/multimedia/screencapture/screenlistmodel.py
new file mode 100644
index 000000000..72bb306e3
--- /dev/null
+++ b/examples/multimedia/screencapture/screenlistmodel.py
@@ -0,0 +1,38 @@
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+from PySide6.QtGui import QGuiApplication
+from PySide6.QtCore import QAbstractListModel, Qt, Slot
+
+
+class ScreenListModel(QAbstractListModel):
+
+ def __init__(self, parent=None):
+ super().__init__(parent)
+ app = qApp # noqa: F821
+ app.screenAdded.connect(self.screens_changed)
+ app.screenRemoved.connect(self.screens_changed)
+ app.primaryScreenChanged.connect(self.screens_changed)
+
+ def rowCount(self, index):
+ return len(QGuiApplication.screens())
+
+ def data(self, index, role):
+ screen_list = QGuiApplication.screens()
+
+ if role == Qt.DisplayRole:
+ screen = screen_list[index.row()]
+ w = screen.size().width()
+ h = screen.size().height()
+ dpi = screen.logicalDotsPerInch()
+ return f'"{screen.name()}" {w}x{h}, {dpi}DPI'
+
+ return None
+
+ def screen(self, index):
+ return QGuiApplication.screens()[index.row()]
+
+ @Slot()
+ def screens_changed(self):
+ self.beginResetModel()
+ self.endResetModel()
diff --git a/examples/multimedia/screencapture/windowlistmodel.py b/examples/multimedia/screencapture/windowlistmodel.py
new file mode 100644
index 000000000..079040ec2
--- /dev/null
+++ b/examples/multimedia/screencapture/windowlistmodel.py
@@ -0,0 +1,30 @@
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+from PySide6.QtCore import QAbstractListModel, Qt, Slot
+from PySide6.QtMultimedia import QWindowCapture
+
+
+class WindowListModel(QAbstractListModel):
+
+ def __init__(self, parent=None):
+ super().__init__(parent)
+ self._window_list = QWindowCapture.capturableWindows()
+
+ def rowCount(self, QModelIndex):
+ return len(self._window_list)
+
+ def data(self, index, role):
+ if role == Qt.DisplayRole:
+ window = self._window_list[index.row()]
+ return window.description()
+ return None
+
+ def window(self, index):
+ return self._window_list[index.row()]
+
+ @Slot()
+ def populate(self):
+ self.beginResetModel()
+ self._window_list = QWindowCapture.capturableWindows()
+ self.endResetModel()