X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Fview%2Fviewwidget.hpp;h=003c0eeda09b57f31d9f26e31b54244045876ac6;hb=08d9c3caec0a3ad1c624af685f948e17b91d278a;hp=65434f65e1720913ab2589f3cfd932fe1c873b46;hpb=1f1edc092680e9182be07a760ad03d00b8c5ca06;p=pulseview.git

diff --git a/pv/view/viewwidget.hpp b/pv/view/viewwidget.hpp
index 65434f65..003c0eed 100644
--- a/pv/view/viewwidget.hpp
+++ b/pv/view/viewwidget.hpp
@@ -25,6 +25,8 @@
 
 #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.
@@ -63,6 +74,23 @@ protected:
 	 */
 	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.
 	 */
@@ -89,7 +117,15 @@ 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 *e);
+
 protected:
+	bool event(QEvent *event);
+
 	void mousePressEvent(QMouseEvent * event);
 	void mouseReleaseEvent(QMouseEvent *event);
 	void mouseMoveEvent(QMouseEvent *event);