X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fviewwidget.hpp;h=fade3d289ab1e687ce511afd9c960337b9e75ef3;hp=1d50832b030c7856a9d71ec47a7c48db42fbc579;hb=7d5565237c8dae52b5a15d39f28b2964b6f79a5f;hpb=803cdac41caf71af9298e3f612468aa522a107d5

diff --git a/pv/view/viewwidget.hpp b/pv/view/viewwidget.hpp
index 1d50832b..fade3d28 100644
--- a/pv/view/viewwidget.hpp
+++ b/pv/view/viewwidget.hpp
@@ -18,13 +18,15 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#ifndef PULSEVIEW_PV_VIEWWIDGET_H
-#define PULSEVIEW_PV_VIEWWIDGET_H
+#ifndef PULSEVIEW_PV_VIEWWIDGET_HPP
+#define PULSEVIEW_PV_VIEWWIDGET_HPP
 
 #include <memory>
 
 #include <QWidget>
 
+class QTouchEvent;
+
 namespace pv {
 namespace view {
 
@@ -38,6 +40,15 @@ class ViewWidget : public QWidget
 protected:
 	ViewWidget(View &parent);
 
+	/**
+	 * Indicates when a view item is being hovered over.
+	 * @param item The item that is being hovered over, or @c nullptr
+	 * if no view item is being hovered over.
+	 * @remarks the default implementation does nothing.
+	 */
+	virtual void item_hover(
+		const std::shared_ptr<pv::view::ViewItem> &item);
+
 	/**
 	 * Indicates the event an a view item has been clicked.
 	 * @param item the view item that has been clicked.
@@ -52,12 +63,34 @@ protected:
 	 */
 	bool accept_drag() const;
 
+	/**
+	 * Returns true if the mouse button is down.
+	 */
+	bool mouse_down() const;
+
 	/**
 	 * Drag the dragging items by the delta offset.
 	 * @param delta the drag offset in pixels.
 	 */
 	void drag_items(const QPoint &delta);
 
+	/**
+	 * Sets this item into the dragged state.
+	 */
+	virtual void drag();
+
+	/**
+	 * Drag the background by the delta offset.
+	 * @param delta the drag offset in pixels.
+	 * @remarks The default implementation does nothing.
+	 */
+	virtual void drag_by(const QPoint &delta);
+
+	/**
+	 * Sets this item into the un-dragged state.
+	 */
+	virtual void drag_release();
+
 	/**
 	 * Gets the items in the view widget.
 	 */
@@ -84,8 +117,16 @@ protected:
 	 */
 	void mouse_left_release_event(QMouseEvent *event);
 
+	/**
+	 * Handles touch begin update and end events.
+	 * @param e the event that triggered this handler.
+	 */
+	virtual bool touch_event(QTouchEvent *event);
+
 protected:
-	void mousePressEvent(QMouseEvent * event);
+	bool event(QEvent *event);
+
+	void mousePressEvent(QMouseEvent *event);
 	void mouseReleaseEvent(QMouseEvent *event);
 	void mouseMoveEvent(QMouseEvent *event);
 
@@ -108,4 +149,4 @@ protected:
 } // namespace view
 } // namespace pv
 
-#endif // PULSEVIEW_PV_VIEWWIDGET_H
+#endif // PULSEVIEW_PV_VIEWWIDGET_HPP