+ /** @brief Sets the backgrounditem's pixmap to m_backgroundImage (only if a certain amount of time has passed since last update). */
+ void slotUpdateBackground();
+
+ /** @brief Sets the scene's zoom level.
+ * @param value zoom level with 100 = show frame at original size */
+ void slotZoom(int value);
+ /** @brief Makes the zoom level fit the viewport's size. */
+ void slotZoomFit();
+ /** @brief Shows the frame at it's original size and center. */
+ void slotZoomOriginal();
+ /** @brief Zooms in by @param by%. */
+ void slotZoomIn(int by = 1);
+ /** @brief Zooms out by @param by%. */
+ void slotZoomOut(int by = 1);