viewer: respond to wheel events for moving and zooming

2022-11-11 11:06:31 -08:00
parent 2cf0b4aa8a
commit f6cbcf8ef9
5 changed files with 75 additions and 8 deletions
@@ -34,6 +34,10 @@ class HandMovableView : public QGraphicsView
 public:
  HandMovableView(QWidget* parent = nullptr);

+  static bool WheelEventIsAZoomEvent(QWheelEvent* event);
+
+  static qreal GetScrollZoomMultiplier(QWheelEvent* event);
+
 protected:
  virtual void ToolChangedEvent(Tool::Item tool){Q_UNUSED(tool)}

@@ -44,8 +48,6 @@ protected:
  void SetDefaultDragMode(DragMode mode);
  const DragMode& GetDefaultDragMode() const;

-  bool WheelEventIsAZoomEvent(QWheelEvent* event) const;
-
  virtual void wheelEvent(QWheelEvent* event) override;

  virtual void ZoomIntoCursorPosition(QWheelEvent* event, double multiplier, const QPointF &cursor_pos);