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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 | #include "cursor.h" | |
22 | ||
23 | #include "ruler.h" | |
24 | #include "view.h" | |
25 | ||
26 | #include <QBrush> | |
27 | #include <QPainter> | |
28 | #include <QPointF> | |
29 | #include <QRect> | |
30 | #include <QRectF> | |
31 | ||
32 | #include <stdio.h> | |
33 | ||
34 | #include <extdef.h> | |
35 | ||
36 | using boost::shared_ptr; | |
37 | ||
38 | namespace pv { | |
39 | namespace view { | |
40 | ||
41 | const QColor Cursor::LineColour(32, 74, 135); | |
42 | const QColor Cursor::FillColour(52, 101, 164); | |
43 | const QColor Cursor::HighlightColour(83, 130, 186); | |
44 | const QColor Cursor::TextColour(Qt::white); | |
45 | ||
46 | const int Cursor::Offset = 1; | |
47 | ||
48 | const int Cursor::ArrowSize = 4; | |
49 | ||
50 | Cursor::Cursor(View &view, double time) : | |
51 | TimeMarker(view, LineColour, time) | |
52 | { | |
53 | } | |
54 | ||
55 | QRectF Cursor::get_label_rect(const QRect &rect) const | |
56 | { | |
57 | const shared_ptr<Cursor> other(get_other_cursor()); | |
58 | assert(other); | |
59 | ||
60 | const float x = (_time - _view.offset()) / _view.scale(); | |
61 | ||
62 | const QSizeF label_size( | |
63 | _text_size.width() + View::LabelPadding.width() * 2, | |
64 | _text_size.height() + View::LabelPadding.height() * 2); | |
65 | const float top = rect.height() - label_size.height() - | |
66 | Cursor::Offset - Cursor::ArrowSize - 0.5f; | |
67 | const float height = label_size.height(); | |
68 | ||
69 | if (_time > other->time()) | |
70 | return QRectF(x, top, label_size.width(), height); | |
71 | else | |
72 | return QRectF(x - label_size.width(), top, | |
73 | label_size.width(), height); | |
74 | } | |
75 | ||
76 | void Cursor::paint_label(QPainter &p, const QRect &rect, | |
77 | unsigned int prefix) | |
78 | { | |
79 | const shared_ptr<Cursor> other(get_other_cursor()); | |
80 | assert(other); | |
81 | ||
82 | compute_text_size(p, prefix); | |
83 | const QRectF r(get_label_rect(rect)); | |
84 | ||
85 | const QPointF left_points[] = { | |
86 | r.topLeft(), | |
87 | r.topRight(), | |
88 | r.bottomRight(), | |
89 | QPointF(r.left() + ArrowSize, r.bottom()), | |
90 | QPointF(r.left(), rect.bottom()), | |
91 | }; | |
92 | ||
93 | const QPointF right_points[] = { | |
94 | r.topRight(), | |
95 | r.topLeft(), | |
96 | r.bottomLeft(), | |
97 | QPointF(r.right() - ArrowSize, r.bottom()), | |
98 | QPointF(r.right(), rect.bottom()), | |
99 | }; | |
100 | ||
101 | const QPointF left_highlight_points[] = { | |
102 | QPointF(r.left() + 1, r.top() + 1), | |
103 | QPointF(r.right() - 1, r.top() + 1), | |
104 | QPointF(r.right() - 1, r.bottom() - 1), | |
105 | QPointF(r.left() + ArrowSize - 1, r.bottom() - 1), | |
106 | QPointF(r.left() + 1, rect.bottom() - 1), | |
107 | }; | |
108 | ||
109 | const QPointF right_highlight_points[] = { | |
110 | QPointF(r.right() - 1, r.top() + 1), | |
111 | QPointF(r.left() + 1, r.top() + 1), | |
112 | QPointF(r.left() + 1, r.bottom() - 1), | |
113 | QPointF(r.right() - ArrowSize + 1, r.bottom() - 1), | |
114 | QPointF(r.right() - 1, rect.bottom() - 1), | |
115 | }; | |
116 | ||
117 | const QPointF *const points = (_time > other->time()) ? | |
118 | left_points : right_points; | |
119 | const QPointF *const highlight_points = (_time > other->time()) ? | |
120 | left_highlight_points : right_highlight_points; | |
121 | ||
122 | if (selected()) { | |
123 | p.setPen(highlight_pen()); | |
124 | p.setBrush(Qt::transparent); | |
125 | p.drawPolygon(points, countof(left_points)); | |
126 | } | |
127 | ||
128 | p.setPen(Qt::transparent); | |
129 | p.setBrush(FillColour); | |
130 | p.drawPolygon(points, countof(left_points)); | |
131 | ||
132 | p.setPen(HighlightColour); | |
133 | p.setBrush(Qt::transparent); | |
134 | p.drawPolygon(highlight_points, countof(left_highlight_points)); | |
135 | ||
136 | p.setPen(LineColour); | |
137 | p.setBrush(Qt::transparent); | |
138 | p.drawPolygon(points, countof(left_points)); | |
139 | ||
140 | p.setPen(TextColour); | |
141 | p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, | |
142 | Ruler::format_time(_time, prefix, 2)); | |
143 | } | |
144 | ||
145 | void Cursor::compute_text_size(QPainter &p, unsigned int prefix) | |
146 | { | |
147 | _text_size = p.boundingRect(QRectF(), 0, | |
148 | Ruler::format_time(_time, prefix, 2)).size(); | |
149 | } | |
150 | ||
151 | shared_ptr<Cursor> Cursor::get_other_cursor() const | |
152 | { | |
153 | const CursorPair &cursors = _view.cursors(); | |
154 | return (cursors.first().get() == this) ? | |
155 | cursors.second() : cursors.first(); | |
156 | } | |
157 | ||
158 | } // namespace view | |
159 | } // namespace pv |