Mercurial Repositories > eric / file comparison
comparison: Snapshot/SnapshotTimer.py
Snapshot/SnapshotTimer.py
- changeset 1772
- f325dfdc8f6b
- child 1965
- 96f5a76e1845
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| 1771:561e97413395 | 1772:f325dfdc8f6b |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2012 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the snapshot timer widget. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import pyqtSignal, Qt, QTimer, QRect | |
| 11 from PyQt4.QtGui import QWidget, QApplication, QPainter, QToolTip, QPalette | |
| 12 | |
| 13 | |
| 14 class SnapshotTimer(QWidget): | |
| 15 """ | |
| 16 Class implementing the snapshot timer widget. | |
| 17 | |
| 18 @signal timeout() emitted after the timer timed out | |
| 19 """ | |
| 20 timeout = pyqtSignal() | |
| 21 | |
| 22 def __init__(self): | |
| 23 """ | |
| 24 Constructor | |
| 25 """ | |
| 26 super().__init__(None) | |
| 27 | |
| 28 self.setWindowFlags(Qt.WindowStaysOnTopHint | Qt.FramelessWindowHint | | |
| 29 Qt.X11BypassWindowManagerHint) | |
| 30 | |
| 31 self.__timer = QTimer() | |
| 32 self.__textRect = QRect() | |
| 33 self.__time = 0 | |
| 34 self.__length = 0 | |
| 35 self.__toggle = True | |
| 36 | |
| 37 # text is taken from paintEvent with maximum number plus some margin | |
| 38 self.resize( | |
| 39 self.fontMetrics().width( | |
| 40 self.trUtf8("Snapshot will be taken in %n seconds", "", 99)) + 6, | |
| 41 self.fontMetrics().height() + 4) | |
| 42 | |
| 43 self.__timer.timeout.connect(self.__bell) | |
| 44 | |
| 45 def start(self, seconds): | |
| 46 """ | |
| 47 Public method to start the timer. | |
| 48 | |
| 49 @param seconds timeout value (integer) | |
| 50 """ | |
| 51 screenGeom = QApplication.desktop().screenGeometry() | |
| 52 self.move(screenGeom.width() // 2 - self.size().width() // 2, screenGeom.top()) | |
| 53 self.__toggle = True | |
| 54 self.__time = 0 | |
| 55 self.__length = seconds | |
| 56 self.__timer.start(1000) | |
| 57 self.show() | |
| 58 | |
| 59 def stop(self): | |
| 60 """ | |
| 61 Public method to stop the timer. | |
| 62 """ | |
| 63 self.setVisible(False) | |
| 64 self.hide() | |
| 65 self.__timer.stop() | |
| 66 | |
| 67 def __bell(self): | |
| 68 """ | |
| 69 Private slot handling timer timeouts. | |
| 70 """ | |
| 71 if self.__time == self.__length - 1: | |
| 72 self.hide() | |
| 73 else: | |
| 74 if self.__time == self.__length: | |
| 75 self.__timer.stop() | |
| 76 self.timeout.emit() | |
| 77 | |
| 78 self.__time += 1 | |
| 79 self.__toggle = not self.__toggle | |
| 80 self.update() | |
| 81 | |
| 82 def paintEvent(self, evt): | |
| 83 """ | |
| 84 Protected method handling paint events. | |
| 85 | |
| 86 @param evt paint event (QPaintEvent) | |
| 87 """ | |
| 88 painter = QPainter(self) | |
| 89 | |
| 90 if self.__time < self.__length: | |
| 91 pal = QToolTip.palette() | |
| 92 textBackgroundColor = pal.color(QPalette.Active, QPalette.Base) | |
| 93 if self.__toggle: | |
| 94 textColor = pal.color(QPalette.Active, QPalette.Text) | |
| 95 else: | |
| 96 textColor = pal.color(QPalette.Active, QPalette.Base) | |
| 97 painter.setPen(textColor) | |
| 98 painter.setBrush(textBackgroundColor) | |
| 99 helpText = self.trUtf8("Snapshot will be taken in %n seconds", "", | |
| 100 self.__length - self.__time) | |
| 101 textRect = painter.boundingRect(self.rect().adjusted(2, 2, -2, -2), | |
| 102 Qt.AlignHCenter | Qt.TextSingleLine, helpText) | |
| 103 painter.drawText(textRect, Qt.AlignHCenter | Qt.TextSingleLine, helpText) | |
| 104 | |
| 105 def enterEvent(self, evt): | |
| 106 """ | |
| 107 Protected method handling the mouse cursor entering the widget. | |
| 108 | |
| 109 @param evt enter event (QEvent) | |
| 110 """ | |
| 111 screenGeom = QApplication.desktop().screenGeometry() | |
| 112 if self.x() == screenGeom.left(): | |
| 113 self.move( | |
| 114 screenGeom.x() + (screenGeom.width() // 2 - self.size().width() // 2), | |
| 115 screenGeom.top()) | |
| 116 else: | |
| 117 self.move(screenGeom.topLeft()) |
