2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 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_VIEW_VIEWPORT_HPP
22 #define PULSEVIEW_PV_VIEW_VIEWPORT_HPP
24 #include <boost/optional.hpp>
27 #include <QTouchEvent>
29 #include "pv/util.hpp"
30 #include "viewwidget.hpp"
41 class Viewport : public ViewWidget
46 explicit Viewport(View &parent);
50 * Indicates when a view item is being hovered over.
51 * @param item The item that is being hovered over, or @c nullptr
52 * if no view item is being hovered over.
54 void item_hover(const std::shared_ptr<pv::view::ViewItem> &item);
57 * Gets the first view item which has a hit-box that contains @c pt .
58 * @param pt the point to search with.
59 * @return the view item that has been found, or and empty
60 * @c shared_ptr if no item was found.
62 std::shared_ptr<pv::view::ViewItem> get_mouse_over_item(
66 * Sets this item into the dragged state.
71 * Drag the background by the delta offset.
72 * @param delta the drag offset in pixels.
74 void drag_by(const QPoint &delta);
77 * Sets this item into the un-dragged state.
82 * Gets the items in the view widget.
84 std::vector< std::shared_ptr<pv::view::ViewItem> > items();
87 * Handles touch begin update and end events.
88 * @param e the event that triggered this handler.
90 bool touch_event(QTouchEvent *event);
93 void paintEvent(QPaintEvent *event);
95 void mouseDoubleClickEvent(QMouseEvent *event);
96 void wheelEvent(QWheelEvent *event);
99 boost::optional<pv::util::Timestamp> drag_offset_;
102 double pinch_offset0_;
103 double pinch_offset1_;
104 bool pinch_zoom_active_;
110 #endif // PULSEVIEW_PV_VIEW_VIEWPORT_HPP