Mercurial Repositories > eric / file comparison
comparison: eric6/E5Gui/E5AnimatedWidget.py
eric6/E5Gui/E5AnimatedWidget.py
- changeset 6942
- 2602857055c5
- parent 6645
- ad476851d7e0
- child 7229
- 53054eb5b15a
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| 6941:f99d60d6b59b | 6942:2602857055c5 |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2015 - 2019 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 __future__ import unicode_literals | |
| 15 | |
| 16 from PyQt5.QtCore import pyqtSlot, QTimeLine, QPoint | |
| 17 from PyQt5.QtWidgets import QWidget | |
| 18 | |
| 19 | |
| 20 class E5AnimatedWidget(QWidget): | |
| 21 """ | |
| 22 Class implementing an animated widget. | |
| 23 """ | |
| 24 DirectionDown = 0 | |
| 25 DirectionUp = 1 | |
| 26 | |
| 27 def __init__(self, direction=DirectionDown, duration=300, parent=None): | |
| 28 """ | |
| 29 Constructor | |
| 30 | |
| 31 @param direction direction of the animation | |
| 32 @type int (one of DirectionDown or DirectionUp) | |
| 33 @param duration duration of the animation | |
| 34 @type int | |
| 35 @param parent reference to the parent widget | |
| 36 @type QWidget | |
| 37 """ | |
| 38 super(E5AnimatedWidget, self).__init__(parent) | |
| 39 | |
| 40 self.__direction = direction | |
| 41 self.__stepHeight = 0.0 | |
| 42 self.__stepY = 0.0 | |
| 43 self.__startY = 0 | |
| 44 self.__widget = QWidget(self) | |
| 45 | |
| 46 self.__timeline = QTimeLine(duration) | |
| 47 self.__timeline.setFrameRange(0, 100) | |
| 48 self.__timeline.frameChanged.connect(self.__animateFrame) | |
| 49 | |
| 50 self.setMaximumHeight(0) | |
| 51 | |
| 52 def widget(self): | |
| 53 """ | |
| 54 Public method to get a reference to the animated widget. | |
| 55 | |
| 56 @return reference to the animated widget | |
| 57 @rtype QWidget | |
| 58 """ | |
| 59 return self.__widget | |
| 60 | |
| 61 @pyqtSlot() | |
| 62 def startAnimation(self): | |
| 63 """ | |
| 64 Public slot to start the animation. | |
| 65 """ | |
| 66 if self.__timeline.state() == QTimeLine.Running: | |
| 67 return | |
| 68 | |
| 69 shown = 0 | |
| 70 hidden = 0 | |
| 71 | |
| 72 if self.__direction == self.DirectionDown: | |
| 73 shown = 0 | |
| 74 hidden = -self.__widget.height() | |
| 75 | |
| 76 self.__widget.move(QPoint(self.__widget.pos().x(), hidden)) | |
| 77 | |
| 78 self.__stepY = (hidden - shown) / 100.0 | |
| 79 self.__startY = hidden | |
| 80 self.__stepHeight = self.__widget.height() / 100.0 | |
| 81 | |
| 82 self.__timeline.setDirection(QTimeLine.Forward) | |
| 83 self.__timeline.start() | |
| 84 | |
| 85 @pyqtSlot(int) | |
| 86 def __animateFrame(self, frame): | |
| 87 """ | |
| 88 Private slot to animate the next frame. | |
| 89 | |
| 90 @param frame frame number | |
| 91 @type int | |
| 92 """ | |
| 93 self.setFixedHeight(frame * self.__stepHeight) | |
| 94 self.__widget.move(self.pos().x(), | |
| 95 self.__startY - frame * self.__stepY) | |
| 96 | |
| 97 @pyqtSlot() | |
| 98 def hide(self): | |
| 99 """ | |
| 100 Public slot to hide the animated widget. | |
| 101 """ | |
| 102 if self.__timeline.state() == QTimeLine.Running: | |
| 103 return | |
| 104 | |
| 105 self.__timeline.setDirection(QTimeLine.Backward) | |
| 106 self.__timeline.finished.connect(self.close) | |
| 107 self.__timeline.start() | |
| 108 | |
| 109 p = self.parentWidget() | |
| 110 if p is not None: | |
| 111 p.setFocus() | |
| 112 | |
| 113 def resizeEvent(self, evt): | |
| 114 """ | |
| 115 Protected method to handle a resize event. | |
| 116 | |
| 117 @param evt reference to the event object | |
| 118 @type QResizeEvent | |
| 119 """ | |
| 120 if evt.size().width() != self.__widget.width(): | |
| 121 self.__widget.resize(evt.size().width(), self.__widget.height()) | |
| 122 | |
| 123 super(E5AnimatedWidget, self).resizeEvent(evt) |
