Basic undo/redo

1 files changed, 11 insertions, 1 deletions

diff --git a/noncore/graphics/drawpad/drawpadcanvas.h b/noncore/graphics/drawpad/drawpadcanvas.h
index 2ec9298..eddcb43 100644
--- a/noncore/graphics/drawpad/drawpadcanvas.h
+++ b/noncore/graphics/drawpad/drawpadcanvas.h
@@ -34,6 +34,8 @@ public:
     void load(QIODevice* ioDevice);
     void save(QIODevice* ioDevice);
 
+    bool undoEnabled();
+    bool redoEnabled();
     bool goPreviousPageEnabled();
     bool goNextPageEnabled();
 
@@ -45,11 +47,18 @@ public slots:
     void clearPage();
     void deletePage();
 
+    void undo();
+    void redo();
+
     void goFirstPage();
     void goPreviousPage();
     void goNextPage();
     void goLastPage();
 
+signals:
+    void pagesChanged();
+    void pageBackupsChanged();
+
 protected:
     void mousePressEvent(QMouseEvent* e);
     void mouseReleaseEvent(QMouseEvent* e);
@@ -59,7 +68,8 @@ protected:
 
 private:
     DrawPad* m_pDrawPad;
-    QList<QPixmap> m_buffers;
+    QList<QPixmap> m_pages;
+    QList<QPixmap> m_pageBackups;
 };
 
 #endif // DRAWPADCANVAS_H