Custom QGraphicsScene for PictureViewer2

Introduce PictureViewerGraphicsScene for upcoming control items in the
scene.

2 files changed, 19 insertions, 3 deletions

diff --git a/pictureviewer2.cpp b/pictureviewer2.cpp
index 6568128..f57cab6 100644
--- a/pictureviewer2.cpp
+++ b/pictureviewer2.cpp
@@ -17,6 +17,7 @@
 #include <QDateTime>
 #include <QPainter>
 #include <QStyleOptionGraphicsItem>
+#include <QGraphicsSceneMouseEvent>
 #include <QSettings>
 #include <QTextDocument>
 #include <QTextCursor>
@@ -68,7 +69,7 @@ PictureViewer2::PictureViewer2(QWidget *parent) : QGraphicsView(parent), mCur(0)
     mNewPicsDlg = new NewPicsDialog(this);
 
     //setup gui
-    mScene = new QGraphicsScene(this);
+    mScene = new PictureViewerGraphicsScene(this);
     setScene(mScene);
     readSettings();
     setMinimumSize(QSize(800, 600));
@@ -743,3 +744,10 @@ void PictureViewer2Item::paint(QPainter *painter, const QStyleOptionGraphicsItem
     painter->restore();
 }
 
+void PictureViewerGraphicsScene::mousePressEvent(QGraphicsSceneMouseEvent *e){
+    QGraphicsScene::mousePressEvent(e);
+    QGraphicsItem *item = itemAt(e->scenePos(), QTransform());
+    if(item){
+        //do something!
+    }
+}
diff --git a/pictureviewer2.h b/pictureviewer2.h
index c9a1f2a..5b78982 100644
--- a/pictureviewer2.h
+++ b/pictureviewer2.h
@@ -14,7 +14,7 @@
 #include <QGraphicsItem>
 #include <QStaticText>
 
-class QGraphicsScene;
+class PictureViewerGraphicsScene;
 class QGraphicsPixmapItem;
 class QWheelEvent;
 class QContextMenuEvent;
@@ -95,7 +95,7 @@ class PictureViewer2 : public QGraphicsView {
         QString constructWindowTitle() const;
         PicDataList mFiles;
         PicDataList mMarkedFiles;
-        QGraphicsScene *mScene;
+        PictureViewerGraphicsScene *mScene;
         QGraphicsPixmapItem *mCur;
         int mCurPos;
         int mConfigInfoPos;
@@ -143,4 +143,12 @@ class PictureViewer2Item : public QGraphicsItem {
         QTextDocument *mDoc;
 };
 
+class PictureViewerGraphicsScene : public QGraphicsScene {
+    public:
+        explicit PictureViewerGraphicsScene(QObject *parent = 0) : QGraphicsScene(parent) {}
+
+    protected:
+        virtual void mousePressEvent(QGraphicsSceneMouseEvent *e);
+};
+
 #endif // PICTUREVIEWER2_H