Mercurial Repositories > eric / file comparison
comparison: eric7/EricWidgets/EricAnimatedWidget.py
eric7/EricWidgets/EricAnimatedWidget.py
- branch
- eric7
- changeset 8358
- 144a6b854f70
- parent 8356
- 68ec9c3d4de5
- child 8881
- 54e42bc2437a
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| 8357:a081458cc57b | 8358:144a6b854f70 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2015 - 2021 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing an animated widget. | |
| 8 """ | |
| 9 | |
| 10 # | |
| 11 # Code was inspired by qupzilla web browser | |
| 12 # | |
| 13 | |
| 14 from PyQt6.QtCore import pyqtSlot, QTimeLine, QPoint | |
| 15 from PyQt6.QtWidgets import QWidget | |
| 16 | |
| 17 | |
| 18 class EricAnimatedWidget(QWidget): | |
| 19 """ | |
| 20 Class implementing an animated widget. | |
| 21 """ | |
| 22 DirectionDown = 0 | |
| 23 DirectionUp = 1 | |
| 24 | |
| 25 def __init__(self, direction=DirectionDown, duration=300, parent=None): | |
| 26 """ | |
| 27 Constructor | |
| 28 | |
| 29 @param direction direction of the animation | |
| 30 @type int (one of DirectionDown or DirectionUp) | |
| 31 @param duration duration of the animation | |
| 32 @type int | |
| 33 @param parent reference to the parent widget | |
| 34 @type QWidget | |
| 35 """ | |
| 36 super().__init__(parent) | |
| 37 | |
| 38 self.__direction = direction | |
| 39 self.__stepHeight = 0.0 | |
| 40 self.__stepY = 0.0 | |
| 41 self.__startY = 0 | |
| 42 self.__widget = QWidget(self) | |
| 43 | |
| 44 self.__timeline = QTimeLine(duration) | |
| 45 self.__timeline.setFrameRange(0, 100) | |
| 46 self.__timeline.frameChanged.connect(self.__animateFrame) | |
| 47 | |
| 48 self.setMaximumHeight(0) | |
| 49 | |
| 50 def widget(self): | |
| 51 """ | |
| 52 Public method to get a reference to the animated widget. | |
| 53 | |
| 54 @return reference to the animated widget | |
| 55 @rtype QWidget | |
| 56 """ | |
| 57 return self.__widget | |
| 58 | |
| 59 @pyqtSlot() | |
| 60 def startAnimation(self): | |
| 61 """ | |
| 62 Public slot to start the animation. | |
| 63 """ | |
| 64 if self.__timeline.state() == QTimeLine.State.Running: | |
| 65 return | |
| 66 | |
| 67 shown = 0 | |
| 68 hidden = 0 | |
| 69 | |
| 70 if self.__direction == self.DirectionDown: | |
| 71 shown = 0 | |
| 72 hidden = -self.__widget.height() | |
| 73 | |
| 74 self.__widget.move(QPoint(self.__widget.pos().x(), hidden)) | |
| 75 | |
| 76 self.__stepY = (hidden - shown) / 100.0 | |
| 77 self.__startY = hidden | |
| 78 self.__stepHeight = self.__widget.height() / 100.0 | |
| 79 | |
| 80 self.__timeline.setDirection(QTimeLine.Direction.Forward) | |
| 81 self.__timeline.start() | |
| 82 | |
| 83 @pyqtSlot(int) | |
| 84 def __animateFrame(self, frame): | |
| 85 """ | |
| 86 Private slot to animate the next frame. | |
| 87 | |
| 88 @param frame frame number | |
| 89 @type int | |
| 90 """ | |
| 91 self.setFixedHeight(frame * self.__stepHeight) | |
| 92 self.__widget.move(self.pos().x(), | |
| 93 self.__startY - frame * self.__stepY) | |
| 94 | |
| 95 @pyqtSlot() | |
| 96 def hide(self): | |
| 97 """ | |
| 98 Public slot to hide the animated widget. | |
| 99 """ | |
| 100 if self.__timeline.state() == QTimeLine.State.Running: | |
| 101 return | |
| 102 | |
| 103 self.__timeline.setDirection(QTimeLine.Direction.Backward) | |
| 104 self.__timeline.finished.connect(self.close) | |
| 105 self.__timeline.start() | |
| 106 | |
| 107 p = self.parentWidget() | |
| 108 if p is not None: | |
| 109 p.setFocus() | |
| 110 | |
| 111 def resizeEvent(self, evt): | |
| 112 """ | |
| 113 Protected method to handle a resize event. | |
| 114 | |
| 115 @param evt reference to the event object | |
| 116 @type QResizeEvent | |
| 117 """ | |
| 118 if evt.size().width() != self.__widget.width(): | |
| 119 self.__widget.resize(evt.size().width(), self.__widget.height()) | |
| 120 | |
| 121 super().resizeEvent(evt) |
