1 files changed, 10 insertions, 2 deletions
diff --git a/qtmips_gui/coreview/logicblock.h b/qtmips_gui/coreview/logicblock.h
index 27c2951..a384b06 100644
--- a/qtmips_gui/coreview/logicblock.h
+++ b/qtmips_gui/coreview/logicblock.h
@@ -36,15 +36,17 @@
 #ifndef LOGICBLOCK_H
 #define LOGICBLOCK_H
 
-#include <QGraphicsItem>
+#include <QGraphicsObject>
 #include <QPainter>
 #include <QGraphicsSimpleTextItem>
 #include <QVector>
+#include <QObject>
 #include "connection.h"
 
 namespace coreview {
 
-class LogicBlock : public QGraphicsItem {
+class LogicBlock : public QGraphicsObject {
+    Q_OBJECT
 public:
     LogicBlock(QString name);
     LogicBlock(QVector<QString> name);
@@ -61,6 +63,9 @@ public:
     // Using x=y and x=-y coordinates is not supported
     const Connector *new_connector(qreal x, qreal y);
 
+signals:
+    void open_block();
+
 private:
     QVector<QGraphicsSimpleTextItem*> text;
     QRectF box;
@@ -72,6 +77,9 @@ private:
     };
     QVector<struct Con> connectors;
     QPointF con_pos(qreal x, qreal y);
+
+protected:
+    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
 };
 
 }