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