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Diffstat (limited to 'examples/widgets/effects/blurpicker/blurpicker.py')
-rw-r--r-- | examples/widgets/effects/blurpicker/blurpicker.py | 105 |
1 files changed, 105 insertions, 0 deletions
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() |