diff -r e9e7eca7efee -r bf71ee032bb4 src/eric7/Snapshot/SnapshotPreview.py
--- a/src/eric7/Snapshot/SnapshotPreview.py Wed Jul 13 11:16:20 2022 +0200
+++ b/src/eric7/Snapshot/SnapshotPreview.py Wed Jul 13 14:55:47 2022 +0200
@@ -14,68 +14,70 @@
class SnapshotPreview(QLabel):
"""
Class implementing the snapshot preview label.
-
+
@signal startDrag() emitted to indicate the start of a drag operation
"""
+
startDrag = pyqtSignal()
-
+
def __init__(self, parent=None):
"""
Constructor
-
+
@param parent reference to the parent widget (QWidget)
"""
super().__init__(parent)
-
- self.setAlignment(Qt.AlignmentFlag.AlignHCenter |
- Qt.AlignmentFlag.AlignCenter)
+
+ self.setAlignment(Qt.AlignmentFlag.AlignHCenter | Qt.AlignmentFlag.AlignCenter)
self.setCursor(Qt.CursorShape.OpenHandCursor)
-
+
self.__mouseClickPoint = QPoint(0, 0)
-
+
def setPreview(self, preview):
"""
Public slot to set the preview picture.
-
+
@param preview preview picture to be shown (QPixmap)
"""
pixmap = (
preview.scaled(
- self.width(), self.height(),
+ self.width(),
+ self.height(),
Qt.AspectRatioMode.KeepAspectRatio,
- Qt.TransformationMode.SmoothTransformation)
- if not preview.isNull() else
- preview
+ Qt.TransformationMode.SmoothTransformation,
+ )
+ if not preview.isNull()
+ else preview
)
self.setPixmap(pixmap)
-
+
def mousePressEvent(self, evt):
"""
Protected method to handle mouse button presses.
-
+
@param evt mouse button press event (QMouseEvent)
"""
if evt.button() == Qt.MouseButton.LeftButton:
self.__mouseClickPoint = evt.position().toPoint()
-
+
def mouseReleaseEvent(self, evt):
"""
Protected method to handle mouse button releases.
-
+
@param evt mouse button release event (QMouseEvent)
"""
self.__mouseClickPoint = QPoint(0, 0)
-
+
def mouseMoveEvent(self, evt):
"""
Protected method to handle mouse moves.
-
+
@param evt mouse move event (QMouseEvent)
"""
if (
- self.__mouseClickPoint != QPoint(0, 0) and (
- evt.position().toPoint() - self.__mouseClickPoint
- ).manhattanLength() > QApplication.startDragDistance()
+ self.__mouseClickPoint != QPoint(0, 0)
+ and (evt.position().toPoint() - self.__mouseClickPoint).manhattanLength()
+ > QApplication.startDragDistance()
):
self.__mouseClickPoint = QPoint(0, 0)
self.startDrag.emit()
