| 19 | |
| 20 | |
| 21 | class SlippedImgWidget(QWidget): |
| 22 | |
| 23 | def __init__(self, bg, fg, *args, **kwargs): |
| 24 | super(SlippedImgWidget, self).__init__(*args, **kwargs) |
| 25 | # 开启鼠标跟踪 |
| 26 | self.setMouseTracking(True) |
| 27 | # 背景 |
| 28 | self.bgPixmap = QPixmap(bg) |
| 29 | # 前景 |
| 30 | self.pePixmap = QPixmap(fg) |
| 31 | # 最小尺寸(背景右边和下方隐藏10个像素) |
| 32 | size = self.bgPixmap.size() |
| 33 | self.setMinimumSize(size.width() - 10, size.height() - 10) |
| 34 | self.setMaximumSize(size.width() - 10, size.height() - 10) |
| 35 | # 分成10份用于鼠标移动判断 |
| 36 | self.stepX = size.width() / 10 |
| 37 | self.stepY = size.height() / 10 |
| 38 | # 偏移量 |
| 39 | self._offsets = [-4, -4, -4, -4] # 背景(-4,-4),前景(-4,-4) |
| 40 | |
| 41 | def mouseMoveEvent(self, event): |
| 42 | super(SlippedImgWidget, self).mouseMoveEvent(event) |
| 43 | pos = event.pos() |
| 44 | |
| 45 | # 偏移量 |
| 46 | offsetX = 5 - int(pos.x() / self.stepX) |
| 47 | offsetY = 5 - int(pos.y() / self.stepY) |
| 48 | self._offsets[0] = offsetX |
| 49 | self._offsets[1] = offsetY |
| 50 | self._offsets[2] = offsetX |
| 51 | self._offsets[3] = offsetY |
| 52 | # 刷新 |
| 53 | self.update() |
| 54 | |
| 55 | def paintEvent(self, event): |
| 56 | super(SlippedImgWidget, self).paintEvent(event) |
| 57 | # 绘制图形 |
| 58 | painter = QPainter(self) |
| 59 | painter.setRenderHint(QPainter.Antialiasing) |
| 60 | # 左上角偏移5个像素画背景图片 |
| 61 | painter.drawPixmap( |
| 62 | -5 + self._offsets[0], |
| 63 | -5 + self._offsets[1], self.bgPixmap) |
| 64 | # 右下角偏移5个像素画前景图片 |
| 65 | painter.drawPixmap( |
| 66 | self.width() - self.pePixmap.width() + 5 - self._offsets[2], |
| 67 | self.height() - self.pePixmap.height() + 5 - self._offsets[3], |
| 68 | self.pePixmap |
| 69 | ) |
| 70 | |
| 71 | |
| 72 | if __name__ == '__main__': |