New canvas cursor and quick cursor implementation

core_lib/src/interface/scribblearea.cpp

@@ -383,12 +383,15 @@ void ScribbleArea::onObjectLoaded()
 
 bool ScribbleArea::event(QEvent *event)
 {
+    bool processed = false;
     if (event->type() == QEvent::WindowDeactivate)
     {
         editor()->tools()->clearTemporaryTool();
+        processed = true;
     }
 
-    return currentTool()->event(event) || QWidget::event(event);
+    processed = currentTool()->event(event) || processed;
+    return QWidget::event(event) || processed;
 }
 
 /************************************************************************/

core_lib/src/tool/basetool.h

@@ -86,7 +86,6 @@ class BaseTool : public QObject
     virtual void pointerMoveEvent(PointerEvent*) = 0;
     virtual void pointerReleaseEvent(PointerEvent*) = 0;
     virtual void pointerDoubleClickEvent(PointerEvent*);
-    virtual bool event(QEvent* event) { return event->isAccepted(); }
 
     // return true if handled
     virtual bool keyPressEvent(QKeyEvent*) { return false; }

core_lib/src/tool/stroketool.cpp

@@ -208,10 +208,14 @@ bool StrokeTool::event(QEvent *event)
     if (event->type() == QEvent::Leave && !isActive()) {
         mCanvasCursorEnabled = false;
         updateCanvasCursor();
+        QObject::event(event);
+        return true;
     } else if (event->type() == QEvent::Enter) {
         mCanvasCursorEnabled = mEditor->preference()->isOn(SETTING::CANVAS_CURSOR);
+        QObject::event(event);
+        return true;
     }
-    return event->isAccepted();
+    return QObject::event(event);
 }
 
 void StrokeTool::updateCanvasCursor()