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MarginWidget: Added item() method
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1/*
2 * This file is part of the PulseView project.
3 *
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
5 *
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.
10 *
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.
15 *
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
19 */
20
21#ifndef PULSEVIEW_PV_VIEW_RULER_H
22#define PULSEVIEW_PV_VIEW_RULER_H
23
24#include <memory>
25
26#include "marginwidget.hpp"
27
28namespace pv {
29namespace view {
30
31class TimeItem;
32class ViewItem;
33
34class Ruler : public MarginWidget
35{
36 Q_OBJECT
37
38private:
39
40 /// Height of the ruler in multipes of the text height
41 static const float RulerHeight;
42
43 static const int MinorTickSubdivision;
44
45 /// Height of the hover arrow in multiples of the text height
46 static const float HoverArrowSize;
47
48public:
49 Ruler(View &parent);
50
51public:
52 void clear_selection();
53
54public:
55 QSize sizeHint() const;
56
57 /**
58 * The extended area that the header widget would like to be sized to.
59 * @remarks This area is the area specified by sizeHint, extended by
60 * the area to overlap the viewport.
61 */
62 QSize extended_size_hint() const;
63
64private:
65 /**
66 * Gets the time items.
67 */
68 std::vector< std::shared_ptr<pv::view::ViewItem> > items();
69
70 /**
71 * Gets the first view item which has a label that contains @c pt .
72 * @param pt the point to search with.
73 * @return the view item that has been found, or and empty
74 * @c shared_ptr if no item was found.
75 */
76 std::shared_ptr<pv::view::ViewItem> get_mouse_over_item(
77 const QPoint &pt);
78
79private:
80 void paintEvent(QPaintEvent *event);
81
82 void mouseMoveEvent(QMouseEvent *e);
83 void mousePressEvent(QMouseEvent *e);
84 void mouseReleaseEvent(QMouseEvent *);
85
86 void mouseDoubleClickEvent(QMouseEvent *e);
87
88 void contextMenuEvent(QContextMenuEvent *event);
89
90 void keyPressEvent(QKeyEvent *e);
91
92private:
93 /**
94 * Draw a hover arrow under the cursor position.
95 * @param p The painter to draw into.
96 * @param text_height The height of a single text ascent.
97 */
98 void draw_hover_mark(QPainter &p, int text_height);
99
100 int calculate_text_height() const;
101
102private Q_SLOTS:
103 void hover_point_changed();
104};
105
106} // namespace view
107} // namespace pv
108
109#endif // PULSEVIEW_PV_VIEW_RULER_H