Mercurial Repositories > eric / file comparison
comparison: src/eric7/Snapshot/SnapshotPreview.py
src/eric7/Snapshot/SnapshotPreview.py
- branch
- eric7
- changeset 9221
- bf71ee032bb4
- parent 9209
- b99e7fd55fd3
- child 9473
- 3f23dbf37dbe
equal
deleted
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replaced
| 9220:e9e7eca7efee | 9221:bf71ee032bb4 |
|---|---|
| 12 | 12 |
| 13 | 13 |
| 14 class SnapshotPreview(QLabel): | 14 class SnapshotPreview(QLabel): |
| 15 """ | 15 """ |
| 16 Class implementing the snapshot preview label. | 16 Class implementing the snapshot preview label. |
| 17 | 17 |
| 18 @signal startDrag() emitted to indicate the start of a drag operation | 18 @signal startDrag() emitted to indicate the start of a drag operation |
| 19 """ | 19 """ |
| 20 | |
| 20 startDrag = pyqtSignal() | 21 startDrag = pyqtSignal() |
| 21 | 22 |
| 22 def __init__(self, parent=None): | 23 def __init__(self, parent=None): |
| 23 """ | 24 """ |
| 24 Constructor | 25 Constructor |
| 25 | 26 |
| 26 @param parent reference to the parent widget (QWidget) | 27 @param parent reference to the parent widget (QWidget) |
| 27 """ | 28 """ |
| 28 super().__init__(parent) | 29 super().__init__(parent) |
| 29 | 30 |
| 30 self.setAlignment(Qt.AlignmentFlag.AlignHCenter | | 31 self.setAlignment(Qt.AlignmentFlag.AlignHCenter | Qt.AlignmentFlag.AlignCenter) |
| 31 Qt.AlignmentFlag.AlignCenter) | |
| 32 self.setCursor(Qt.CursorShape.OpenHandCursor) | 32 self.setCursor(Qt.CursorShape.OpenHandCursor) |
| 33 | 33 |
| 34 self.__mouseClickPoint = QPoint(0, 0) | 34 self.__mouseClickPoint = QPoint(0, 0) |
| 35 | 35 |
| 36 def setPreview(self, preview): | 36 def setPreview(self, preview): |
| 37 """ | 37 """ |
| 38 Public slot to set the preview picture. | 38 Public slot to set the preview picture. |
| 39 | 39 |
| 40 @param preview preview picture to be shown (QPixmap) | 40 @param preview preview picture to be shown (QPixmap) |
| 41 """ | 41 """ |
| 42 pixmap = ( | 42 pixmap = ( |
| 43 preview.scaled( | 43 preview.scaled( |
| 44 self.width(), self.height(), | 44 self.width(), |
| 45 self.height(), | |
| 45 Qt.AspectRatioMode.KeepAspectRatio, | 46 Qt.AspectRatioMode.KeepAspectRatio, |
| 46 Qt.TransformationMode.SmoothTransformation) | 47 Qt.TransformationMode.SmoothTransformation, |
| 47 if not preview.isNull() else | 48 ) |
| 48 preview | 49 if not preview.isNull() |
| 50 else preview | |
| 49 ) | 51 ) |
| 50 self.setPixmap(pixmap) | 52 self.setPixmap(pixmap) |
| 51 | 53 |
| 52 def mousePressEvent(self, evt): | 54 def mousePressEvent(self, evt): |
| 53 """ | 55 """ |
| 54 Protected method to handle mouse button presses. | 56 Protected method to handle mouse button presses. |
| 55 | 57 |
| 56 @param evt mouse button press event (QMouseEvent) | 58 @param evt mouse button press event (QMouseEvent) |
| 57 """ | 59 """ |
| 58 if evt.button() == Qt.MouseButton.LeftButton: | 60 if evt.button() == Qt.MouseButton.LeftButton: |
| 59 self.__mouseClickPoint = evt.position().toPoint() | 61 self.__mouseClickPoint = evt.position().toPoint() |
| 60 | 62 |
| 61 def mouseReleaseEvent(self, evt): | 63 def mouseReleaseEvent(self, evt): |
| 62 """ | 64 """ |
| 63 Protected method to handle mouse button releases. | 65 Protected method to handle mouse button releases. |
| 64 | 66 |
| 65 @param evt mouse button release event (QMouseEvent) | 67 @param evt mouse button release event (QMouseEvent) |
| 66 """ | 68 """ |
| 67 self.__mouseClickPoint = QPoint(0, 0) | 69 self.__mouseClickPoint = QPoint(0, 0) |
| 68 | 70 |
| 69 def mouseMoveEvent(self, evt): | 71 def mouseMoveEvent(self, evt): |
| 70 """ | 72 """ |
| 71 Protected method to handle mouse moves. | 73 Protected method to handle mouse moves. |
| 72 | 74 |
| 73 @param evt mouse move event (QMouseEvent) | 75 @param evt mouse move event (QMouseEvent) |
| 74 """ | 76 """ |
| 75 if ( | 77 if ( |
| 76 self.__mouseClickPoint != QPoint(0, 0) and ( | 78 self.__mouseClickPoint != QPoint(0, 0) |
| 77 evt.position().toPoint() - self.__mouseClickPoint | 79 and (evt.position().toPoint() - self.__mouseClickPoint).manhattanLength() |
| 78 ).manhattanLength() > QApplication.startDragDistance() | 80 > QApplication.startDragDistance() |
| 79 ): | 81 ): |
| 80 self.__mouseClickPoint = QPoint(0, 0) | 82 self.__mouseClickPoint = QPoint(0, 0) |
| 81 self.startDrag.emit() | 83 self.startDrag.emit() |
