2 * This file is part of the PulseView project.
4 * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef PULSEVIEW_PV_VIEWWIDGET_H
22 #define PULSEVIEW_PV_VIEWWIDGET_H
34 class ViewWidget : public QWidget
39 ViewWidget(View &parent);
42 * Indicates the event an a view item has been clicked.
43 * @param item the view item that has been clicked.
44 * @remarks the default implementation does nothing.
46 virtual void item_clicked(
47 const std::shared_ptr<pv::view::ViewItem> &item);
50 * Returns true if the selection of row items allows dragging.
51 * @return Returns true if the drag is acceptable.
53 bool accept_drag() const;
56 * Returns true if the mouse button is down.
58 bool mouse_down() const;
61 * Drag the dragging items by the delta offset.
62 * @param delta the drag offset in pixels.
64 void drag_items(const QPoint &delta);
67 * Gets the items in the view widget.
69 virtual std::vector< std::shared_ptr<pv::view::ViewItem> > items() = 0;
72 * Gets the first view item which has a hit-box that contains @c pt .
73 * @param pt the point to search with.
74 * @return the view item that has been found, or and empty
75 * @c shared_ptr if no item was found.
77 virtual std::shared_ptr<pv::view::ViewItem> get_mouse_over_item(
78 const QPoint &pt) = 0;
81 * Handles left mouse button press events.
82 * @param event the mouse event that triggered this handler.
84 void mouse_left_press_event(QMouseEvent *event);
87 * Handles left mouse button release events.
88 * @param event the mouse event that triggered this handler.
90 void mouse_left_release_event(QMouseEvent *event);
93 void mousePressEvent(QMouseEvent * event);
94 void mouseReleaseEvent(QMouseEvent *event);
95 void mouseMoveEvent(QMouseEvent *event);
97 void leaveEvent(QEvent *event);
100 void clear_selection();
103 void selection_changed();
106 pv::view::View &view_;
108 QPoint mouse_down_point_;
109 std::shared_ptr<ViewItem> mouse_down_item_;
116 #endif // PULSEVIEW_PV_VIEWWIDGET_H