diff options
Diffstat (limited to 'examples/widgets/effects/blurpicker')
16 files changed, 189 insertions, 0 deletions
diff --git a/examples/widgets/effects/blurpicker/blureffect.py b/examples/widgets/effects/blurpicker/blureffect.py new file mode 100644 index 000000000..16c14a758 --- /dev/null +++ b/examples/widgets/effects/blurpicker/blureffect.py @@ -0,0 +1,33 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + + +from PySide6.QtCore import QRect +from PySide6.QtGui import QPainter +from PySide6.QtWidgets import QGraphicsBlurEffect + + +class BlurEffect(QGraphicsBlurEffect): + def __init__(self, item): + super().__init__() + self._base_line = 200 + self._item = item + + def adjust_for_item(self): + y = self._base_line - self._item.pos().y() + + # radius = qBound(qreal(0.0), y / 32, qreal(16.0)); which is equivalent to + radius = max(0, min(y / 32, 16)) + + self.setBlurRadius(radius) + + def set_base_line(self, base_line): + self._base_line = base_line + + def boundingRect(self) -> QRect: + self.adjust_for_item() + return super().boundingRect() + + def draw(self, painter: QPainter): + self.adjust_for_item() + super().draw(painter) diff --git a/examples/widgets/effects/blurpicker/blurpicker.py b/examples/widgets/effects/blurpicker/blurpicker.py new file mode 100644 index 000000000..6ff11f217 --- /dev/null +++ b/examples/widgets/effects/blurpicker/blurpicker.py @@ -0,0 +1,105 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + + +from pathlib import Path +from PySide6.QtCore import ( + QEasingCurve, + QPointF, + Qt, + QAbstractAnimation, + QPropertyAnimation, + Property, +) +from PySide6.QtGui import QPainter, QTransform, QPixmap +from PySide6.QtWidgets import QGraphicsView, QFrame, QGraphicsScene, QGraphicsPixmapItem +from math import pi, sin, cos +from blureffect import BlurEffect + + +class BlurPicker(QGraphicsView): + def __init__(self, parent=None): + super().__init__(parent) + self._index = 0 + self._animation = QPropertyAnimation(self, b"index") + self._path = Path(__file__).resolve().parent + + self._background = QPixmap(self._path / "images" / "background.jpg") + self.setBackgroundBrush(self._background) + self.setScene(QGraphicsScene(self)) + + self._icons = [] + + self.setup_scene() + self.index = 0 + + self._animation.setDuration(400) + self._animation.setEasingCurve(QEasingCurve.InOutSine) + + self.setRenderHint(QPainter.Antialiasing, True) + self.setFrameStyle(QFrame.NoFrame) + + @Property(float) + def index(self) -> float: + return self._index + + @index.setter + def index(self, index: float): + self._index = index + + base_line = 0.0 + iconAngle = 2 * pi / len(self._icons) + + for i, icon in enumerate(self._icons): + a = (i + self._index) * iconAngle + xs = 170 * sin(a) + ys = 100 * cos(a) + pos = QPointF(xs, ys) + pos = QTransform().rotate(-20).map(pos) + pos -= QPointF(40, 40) + icon.setPos(pos) + base_line = max(base_line, ys) + + icon.graphicsEffect().set_base_line(base_line) + + self.scene().update() + + def setup_scene(self): + self.scene().setSceneRect(-200, -120, 400, 240) + + names = ["accessories-calculator.png", "accessories-text-editor.png", + "help-browser.png", "internet-group-chat.png", + "internet-mail.png", "internet-web-browser.png", "office-calendar.png", + "system-users.png"] + + for name in names: + pixmap = QPixmap(self._path / "images" / name) + icon: QGraphicsPixmapItem = self.scene().addPixmap(pixmap) + icon.setZValue(1) + icon.setGraphicsEffect(BlurEffect(icon)) + self._icons.append(icon) + + bg: QGraphicsPixmapItem = self.scene().addPixmap(self._background) + bg.setZValue(0) + bg.setPos(-200, -150) + + def keyPressEvent(self, event): + delta = 0 + if event.key() == Qt.Key_Left: + delta = -1 + elif event.key() == Qt.Key_Right: + delta = 1 + + if self._animation.state() == QAbstractAnimation.Stopped and delta: + self._animation.setEndValue(self._index + delta) + self._animation.start() + event.accept() + + def mousePressEvent(self, event): + right = event.position().x() > (self.width() / 2) + delta = 1 if right else -1 + + if self._animation.state() == QAbstractAnimation.Stopped: + self._animation.setEndValue(self._index + delta) + self._animation.start() + event.accept() diff --git a/examples/widgets/effects/blurpicker/blurpicker.pyproject b/examples/widgets/effects/blurpicker/blurpicker.pyproject new file mode 100644 index 000000000..6ae303265 --- /dev/null +++ b/examples/widgets/effects/blurpicker/blurpicker.pyproject @@ -0,0 +1,17 @@ +{ + "files": [ + "main.py", + "blurpicker.py", + "blureffect.py", + "images/accessories-calculator.png", + "images/accessories-text-editor.png", + "images/background.jpg", + "images/help-browser.png", + "images/internet-group-chat.png", + "images/internet-mail.png", + "images/internet-web-browser.png", + "images/office-calendar.png", + "images/README.txt", + "images/system-users.png" + ] +} diff --git a/examples/widgets/effects/blurpicker/doc/blurpicker.png b/examples/widgets/effects/blurpicker/doc/blurpicker.png Binary files differnew file mode 100644 index 000000000..826eef201 --- /dev/null +++ b/examples/widgets/effects/blurpicker/doc/blurpicker.png diff --git a/examples/widgets/effects/blurpicker/doc/blurpicker.rst b/examples/widgets/effects/blurpicker/doc/blurpicker.rst new file mode 100644 index 000000000..70ce04c8d --- /dev/null +++ b/examples/widgets/effects/blurpicker/doc/blurpicker.rst @@ -0,0 +1,9 @@ +Blur Picker Effect Example +========================== + +The blur picker effect example demonstrates how to apply +graphical effects on items in the view. + +.. image:: blurpicker.png + :width: 400 + :alt: Blur Picker Screenshot diff --git a/examples/widgets/effects/blurpicker/images/README.txt b/examples/widgets/effects/blurpicker/images/README.txt new file mode 100644 index 000000000..0927e177d --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/README.txt @@ -0,0 +1,5 @@ +The background is taken from a public domain photo at: +http://www.photos8.com/view/computer_board2-800x600.html + +All other icons are from the Tango Desktop project: +http://tango.freedesktop.org/Tango_Desktop_Project diff --git a/examples/widgets/effects/blurpicker/images/accessories-calculator.png b/examples/widgets/effects/blurpicker/images/accessories-calculator.png Binary files differnew file mode 100644 index 000000000..4e7661f65 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/accessories-calculator.png diff --git a/examples/widgets/effects/blurpicker/images/accessories-text-editor.png b/examples/widgets/effects/blurpicker/images/accessories-text-editor.png Binary files differnew file mode 100644 index 000000000..33bef0bc1 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/accessories-text-editor.png diff --git a/examples/widgets/effects/blurpicker/images/background.jpg b/examples/widgets/effects/blurpicker/images/background.jpg Binary files differnew file mode 100644 index 000000000..e75b38899 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/background.jpg diff --git a/examples/widgets/effects/blurpicker/images/help-browser.png b/examples/widgets/effects/blurpicker/images/help-browser.png Binary files differnew file mode 100644 index 000000000..8ef4fae91 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/help-browser.png diff --git a/examples/widgets/effects/blurpicker/images/internet-group-chat.png b/examples/widgets/effects/blurpicker/images/internet-group-chat.png Binary files differnew file mode 100644 index 000000000..dd92d9394 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/internet-group-chat.png diff --git a/examples/widgets/effects/blurpicker/images/internet-mail.png b/examples/widgets/effects/blurpicker/images/internet-mail.png Binary files differnew file mode 100644 index 000000000..7e6b93be8 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/internet-mail.png diff --git a/examples/widgets/effects/blurpicker/images/internet-web-browser.png b/examples/widgets/effects/blurpicker/images/internet-web-browser.png Binary files differnew file mode 100644 index 000000000..a979a92b4 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/internet-web-browser.png diff --git a/examples/widgets/effects/blurpicker/images/office-calendar.png b/examples/widgets/effects/blurpicker/images/office-calendar.png Binary files differnew file mode 100644 index 000000000..e09590682 --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/office-calendar.png diff --git a/examples/widgets/effects/blurpicker/images/system-users.png b/examples/widgets/effects/blurpicker/images/system-users.png Binary files differnew file mode 100644 index 000000000..a7f630a5b --- /dev/null +++ b/examples/widgets/effects/blurpicker/images/system-users.png diff --git a/examples/widgets/effects/blurpicker/main.py b/examples/widgets/effects/blurpicker/main.py new file mode 100644 index 000000000..053ac60ec --- /dev/null +++ b/examples/widgets/effects/blurpicker/main.py @@ -0,0 +1,20 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the widgets/effects/blurpicker example from Qt v6.x""" + +import sys +from PySide6.QtWidgets import QApplication +from blurpicker import BlurPicker + + +if __name__ == "__main__": + app = QApplication(sys.argv) + + blur_picker = BlurPicker() + blur_picker.setWindowTitle("Application Picker") + + blur_picker.setFixedSize(400, 300) + blur_picker.show() + + sys.exit(app.exec()) |
