X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fviewwidget.hpp;h=fade3d289ab1e687ce511afd9c960337b9e75ef3;hp=5c8889e3be4cde76d2b91bc6724dd848d7bcb19a;hb=d9ea96280ab1128427143660ae375c30b19aa0cb;hpb=40aca27ed83559f7f79873e353f64d2c36a18fce

diff --git a/pv/view/viewwidget.hpp b/pv/view/viewwidget.hpp
index 5c8889e3..fade3d28 100644
--- a/pv/view/viewwidget.hpp
+++ b/pv/view/viewwidget.hpp
@@ -18,15 +18,20 @@
  * 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 {
 
 class View;
+class ViewItem;
 
 class ViewWidget : public QWidget
 {
@@ -35,11 +40,113 @@ 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.
+	 * @remarks the default implementation does nothing.
+	 */
+	virtual void item_clicked(
+		const std::shared_ptr<pv::view::ViewItem> &item);
+
+	/**
+	 * Returns true if the selection of row items allows dragging.
+	 * @return Returns true if the drag is acceptable.
+	 */
+	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.
+	 */
+	virtual std::vector< std::shared_ptr<pv::view::ViewItem> > items() = 0;
+
+	/**
+	 * Gets the first view item which has a hit-box that contains @c pt .
+	 * @param pt the point to search with.
+	 * @return the view item that has been found, or and empty
+	 *   @c shared_ptr if no item was found.
+	 */
+	virtual std::shared_ptr<pv::view::ViewItem> get_mouse_over_item(
+		const QPoint &pt) = 0;
+
+	/**
+	 * Handles left mouse button press events.
+	 * @param event the mouse event that triggered this handler.
+	 */
+	void mouse_left_press_event(QMouseEvent *event);
+
+	/**
+	 * Handles left mouse button release events.
+	 * @param event the mouse event that triggered this handler.
+	 */
+	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:
+	bool event(QEvent *event);
+
+	void mousePressEvent(QMouseEvent *event);
+	void mouseReleaseEvent(QMouseEvent *event);
+	void mouseMoveEvent(QMouseEvent *event);
+
+	void leaveEvent(QEvent *event);
+
+public Q_SLOTS:
+	void clear_selection();
+
+Q_SIGNALS:
+	void selection_changed();
+
 protected:
 	pv::view::View &view_;
+	QPoint mouse_point_;
+	QPoint mouse_down_point_;
+	std::shared_ptr<ViewItem> mouse_down_item_;
+	bool item_dragging_;
 };
 
 } // namespace view
 } // namespace pv
 
-#endif // PULSEVIEW_PV_VIEWWIDGET_H
+#endif // PULSEVIEW_PV_VIEWWIDGET_HPP