| 65 | self._backingStore.flush(QRegion(self._rect)) |
| 66 | |
| 67 | def run(self): |
| 68 | self.resized.connect(self.resize, Qt.QueuedConnection) |
| 69 | full = os.getenv("full") |
| 70 | delay = int(1000 / 60) |
| 71 | isMac = platform.system() == "Darwin" |
| 72 | |
| 73 | # create backingStore |
| 74 | self._oldSize = self._widget.size() |
| 75 | self._backingStore = QBackingStore(self._window) |
| 76 | self._backingStore.resize(self._oldSize) |
| 77 | |
| 78 | # paint device |
| 79 | rect = QRect(QPoint(0, 0), self._oldSize) |
| 80 | self._backingStore.beginPaint(QRegion(rect)) |
| 81 | if not self._backingStore.paintDevice(): |
| 82 | print("paintDevice is None") |
| 83 | return |
| 84 | self._backingStore.endPaint() |
| 85 | |
| 86 | while not self._exited.is_set(): |
| 87 | if self._resized.is_set(): |
| 88 | self._oldSize = self._size |
| 89 | self._backingStore.resize(self._oldSize) |
| 90 | self._resized.clear() |
| 91 | |
| 92 | rect = QRect(QPoint(0, 0), self._oldSize) |
| 93 | if full is None: |
| 94 | rect = QRect( |
| 95 | randint(0, max(100, self._oldSize.width() - 100)), |
| 96 | randint(0, max(100, self._oldSize.height() - 100)), |
| 97 | randint(100, max(200, self._oldSize.width())), |
| 98 | randint(100, max(200, self._oldSize.height())), |
| 99 | ) |
| 100 | |
| 101 | # paint |
| 102 | self._backingStore.beginPaint(QRegion(rect)) |
| 103 | device = self._backingStore.paintDevice() |
| 104 | if device: |
| 105 | painter = QPainter() |
| 106 | painter.begin(device) |
| 107 | painter.fillRect(rect, Qt.GlobalColor(randint(4, 19))) |
| 108 | painter.end() |
| 109 | self._backingStore.endPaint() |
| 110 | if isMac: |
| 111 | self._rect = rect |
| 112 | QMetaObject.invokeMethod( |
| 113 | self._widget, |
| 114 | "paintOnGui", |
| 115 | Qt.QueuedConnection, |
| 116 | ) |
| 117 | else: |
| 118 | self._backingStore.flush(QRegion(rect)) |
| 119 | |
| 120 | self.msleep(delay) |
| 121 | |
| 122 | print("paint thread end") |