* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef PULSEVIEW_PV_VIEW_VIEWPORT_H
-#define PULSEVIEW_PV_VIEW_VIEWPORT_H
+#ifndef PULSEVIEW_PV_VIEW_VIEWPORT_HPP
+#define PULSEVIEW_PV_VIEW_VIEWPORT_HPP
+
+#include <boost/optional.hpp>
#include <QTimer>
#include <QTouchEvent>
+#include "pv/util.hpp"
#include "viewwidget.hpp"
class QPainter;
public:
explicit Viewport(View &parent);
-protected:
- void paintEvent(QPaintEvent *event);
+private:
+ /**
+ * 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.
+ */
+ void item_hover(const std::shared_ptr<pv::view::ViewItem> &item);
+
+ /**
+ * 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.
+ */
+ std::shared_ptr<pv::view::ViewItem> get_mouse_over_item(
+ const QPoint &pt);
+
+ /**
+ * Sets this item into the dragged state.
+ */
+ void drag();
+
+ /**
+ * Drag the background by the delta offset.
+ * @param delta the drag offset in pixels.
+ */
+ void drag_by(const QPoint &delta);
+
+ /**
+ * Sets this item into the un-dragged state.
+ */
+ void drag_release();
+
+ /**
+ * Gets the items in the view widget.
+ */
+ std::vector< std::shared_ptr<pv::view::ViewItem> > items();
+
+ /**
+ * Handles touch begin update and end events.
+ * @param e the event that triggered this handler.
+ */
+ bool touch_event(QTouchEvent *e);
private:
- bool event(QEvent *event);
- void mousePressEvent(QMouseEvent *event);
- void mouseReleaseEvent(QMouseEvent *event);
- void mouseMoveEvent(QMouseEvent *event);
+ void paintEvent(QPaintEvent *event);
+
void mouseDoubleClickEvent(QMouseEvent * event);
void wheelEvent(QWheelEvent *event);
- bool touchEvent(QTouchEvent *e);
-
-private Q_SLOTS:
- void on_signals_moved();
private:
- QPoint mouse_down_point_;
- double mouse_down_offset_;
- bool mouse_down_valid_;
+ boost::optional<pv::util::Timestamp> drag_offset_;
double pinch_offset0_;
double pinch_offset1_;
} // namespace view
} // namespace pv
-#endif // PULSEVIEW_PV_VIEW_VIEWPORT_H
+#endif // PULSEVIEW_PV_VIEW_VIEWPORT_HPP