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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 <extdef.h> | |
22 | ||
23 | #include <math.h> | |
24 | ||
25 | #include <QApplication> | |
26 | ||
27 | #include "signal.h" | |
28 | #include "view.h" | |
29 | ||
30 | namespace pv { | |
31 | namespace view { | |
32 | ||
33 | const int Signal::LabelHitPadding = 2; | |
34 | const int Signal::LabelHighlightRadius = 6; | |
35 | ||
36 | const QPen Signal::SignalAxisPen(QColor(128, 128, 128, 64)); | |
37 | ||
38 | Signal::Signal(QString name) : | |
39 | _name(name), | |
40 | _v_offset(0), | |
41 | _selected(false) | |
42 | { | |
43 | } | |
44 | ||
45 | QString Signal::get_name() const | |
46 | { | |
47 | return _name; | |
48 | } | |
49 | ||
50 | void Signal::set_name(QString name) | |
51 | { | |
52 | _name = name; | |
53 | } | |
54 | ||
55 | QColor Signal::get_colour() const | |
56 | { | |
57 | return _colour; | |
58 | } | |
59 | ||
60 | void Signal::set_colour(QColor colour) | |
61 | { | |
62 | _colour = colour; | |
63 | } | |
64 | ||
65 | int Signal::get_v_offset() const | |
66 | { | |
67 | return _v_offset; | |
68 | } | |
69 | ||
70 | void Signal::set_v_offset(int v_offset) | |
71 | { | |
72 | _v_offset = v_offset; | |
73 | } | |
74 | ||
75 | bool Signal::selected() const | |
76 | { | |
77 | return _selected; | |
78 | } | |
79 | ||
80 | void Signal::select(bool select) | |
81 | { | |
82 | _selected = select; | |
83 | } | |
84 | ||
85 | void Signal::paint_label(QPainter &p, int y, int right, bool hover) | |
86 | { | |
87 | p.setBrush(_colour); | |
88 | ||
89 | const QColor colour = get_colour(); | |
90 | ||
91 | compute_text_size(p); | |
92 | const QRectF label_rect = get_label_rect(y, right); | |
93 | ||
94 | // Paint the label | |
95 | const QPointF points[] = { | |
96 | label_rect.topLeft(), | |
97 | label_rect.topRight(), | |
98 | QPointF(right, y), | |
99 | label_rect.bottomRight(), | |
100 | label_rect.bottomLeft() | |
101 | }; | |
102 | ||
103 | const QPointF highlight_points[] = { | |
104 | QPointF(label_rect.left() + 1, label_rect.top() + 1), | |
105 | QPointF(label_rect.right(), label_rect.top() + 1), | |
106 | QPointF(right - 1, y), | |
107 | QPointF(label_rect.right(), label_rect.bottom() - 1), | |
108 | QPointF(label_rect.left() + 1, label_rect.bottom() - 1) | |
109 | }; | |
110 | ||
111 | if (_selected) { | |
112 | p.setPen(QPen(QApplication::palette().brush( | |
113 | QPalette::Highlight), LabelHighlightRadius, | |
114 | Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin)); | |
115 | p.setBrush(Qt::transparent); | |
116 | p.drawPolygon(points, countof(points)); | |
117 | } | |
118 | ||
119 | p.setPen(Qt::transparent); | |
120 | p.setBrush(hover ? colour.lighter() : colour); | |
121 | p.drawPolygon(points, countof(points)); | |
122 | ||
123 | p.setPen(colour.lighter()); | |
124 | p.setBrush(Qt::transparent); | |
125 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
126 | ||
127 | p.setPen(colour.darker()); | |
128 | p.setBrush(Qt::transparent); | |
129 | p.drawPolygon(points, countof(points)); | |
130 | ||
131 | // Paint the text | |
132 | p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white); | |
133 | p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, _name); | |
134 | } | |
135 | ||
136 | bool Signal::pt_in_label_rect(int y, int left, int right, | |
137 | const QPoint &point) | |
138 | { | |
139 | (void)left; | |
140 | ||
141 | const QRectF label = get_label_rect(y, right); | |
142 | return QRectF( | |
143 | QPointF(label.left() - LabelHitPadding, | |
144 | label.top() - LabelHitPadding), | |
145 | QPointF(right, label.bottom() + LabelHitPadding) | |
146 | ).contains(point); | |
147 | } | |
148 | ||
149 | void Signal::paint_axis(QPainter &p, int y, int left, int right) | |
150 | { | |
151 | p.setPen(SignalAxisPen); | |
152 | p.drawLine(QPointF(left, y + 0.5f), QPointF(right, y + 0.5f)); | |
153 | } | |
154 | ||
155 | void Signal::compute_text_size(QPainter &p) | |
156 | { | |
157 | _text_size = QSize( | |
158 | p.boundingRect(QRectF(), 0, _name).width(), | |
159 | p.boundingRect(QRectF(), 0, "Tg").height()); | |
160 | } | |
161 | ||
162 | QRectF Signal::get_label_rect(int y, int right) | |
163 | { | |
164 | using pv::view::View; | |
165 | ||
166 | const QSizeF label_size( | |
167 | _text_size.width() + View::LabelPadding.width() * 2, | |
168 | ceilf((_text_size.height() + View::LabelPadding.height() * 2) / 2) * 2); | |
169 | const float label_arrow_length = label_size.height() / 2; | |
170 | return QRectF( | |
171 | right - label_arrow_length - label_size.width() - 0.5, | |
172 | y + 0.5f - label_size.height() / 2, | |
173 | label_size.width(), label_size.height()); | |
174 | } | |
175 | ||
176 | } // namespace view | |
177 | } // namespace pv |