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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 | ||
28 | namespace pv { | |
29 | namespace view { | |
30 | ||
31 | class TimeItem; | |
32 | class ViewItem; | |
33 | ||
34 | class Ruler : public MarginWidget | |
35 | { | |
36 | Q_OBJECT | |
37 | ||
38 | private: | |
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 | ||
48 | public: | |
49 | Ruler(View &parent); | |
50 | ||
51 | public: | |
52 | QSize sizeHint() const; | |
53 | ||
54 | /** | |
55 | * The extended area that the header widget would like to be sized to. | |
56 | * @remarks This area is the area specified by sizeHint, extended by | |
57 | * the area to overlap the viewport. | |
58 | */ | |
59 | QSize extended_size_hint() const; | |
60 | ||
61 | private: | |
62 | /** | |
63 | * Gets the time items. | |
64 | */ | |
65 | std::vector< std::shared_ptr<pv::view::ViewItem> > items(); | |
66 | ||
67 | /** | |
68 | * Gets the first view item which has a label that contains @c pt . | |
69 | * @param pt the point to search with. | |
70 | * @return the view item that has been found, or and empty | |
71 | * @c shared_ptr if no item was found. | |
72 | */ | |
73 | std::shared_ptr<pv::view::ViewItem> get_mouse_over_item( | |
74 | const QPoint &pt); | |
75 | ||
76 | private: | |
77 | void paintEvent(QPaintEvent *event); | |
78 | ||
79 | void mouseDoubleClickEvent(QMouseEvent *e); | |
80 | ||
81 | private: | |
82 | /** | |
83 | * Draw a hover arrow under the cursor position. | |
84 | * @param p The painter to draw into. | |
85 | * @param text_height The height of a single text ascent. | |
86 | */ | |
87 | void draw_hover_mark(QPainter &p, int text_height); | |
88 | ||
89 | int calculate_text_height() const; | |
90 | ||
91 | private Q_SLOTS: | |
92 | void hover_point_changed(); | |
93 | }; | |
94 | ||
95 | } // namespace view | |
96 | } // namespace pv | |
97 | ||
98 | #endif // PULSEVIEW_PV_VIEW_RULER_H |