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28a4c9c5 JH |
1 | /* |
2 | * This file is part of the sigrok 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 "signal.h" | |
22 | ||
3e46726a JH |
23 | #include "extdef.h" |
24 | ||
25 | const QSizeF Signal::LabelPadding(4, 0); | |
28a4c9c5 | 26 | |
2858b391 JH |
27 | Signal::Signal(QString name) : |
28 | _name(name) | |
28a4c9c5 JH |
29 | { |
30 | } | |
31 | ||
32 | QString Signal::get_name() const | |
33 | { | |
34 | return _name; | |
35 | } | |
3e46726a JH |
36 | |
37 | void Signal::paint_label(QPainter &p, const QRect &rect) | |
38 | { | |
39 | p.setBrush(get_colour()); | |
40 | ||
41 | const QString text(_name); | |
42 | const QColor colour = get_colour(); | |
43 | ||
44 | const QSizeF text_size = p.boundingRect( | |
45 | QRectF(0, 0, rect.width(), 0), 0, text).size(); | |
46 | ||
47 | const float nominal_offset = get_nominal_offset(rect); | |
48 | const QSizeF label_size( | |
49 | text_size.width() + LabelPadding.width() * 2, | |
50 | text_size.height() + LabelPadding.height() * 2); | |
51 | const float label_arrow_length = label_size.height() / 2; | |
52 | const QRectF label_rect( | |
53 | rect.right() - label_arrow_length - label_size.width(), | |
54 | nominal_offset - label_size.height() / 2, | |
55 | label_size.width(), label_size.height()); | |
56 | ||
57 | // Paint the label | |
58 | const QPointF points[] = { | |
59 | label_rect.topLeft(), | |
60 | label_rect.topRight(), | |
61 | QPointF(rect.right(), nominal_offset), | |
62 | label_rect.bottomRight(), | |
63 | label_rect.bottomLeft() | |
64 | }; | |
65 | ||
c9b6acc1 JH |
66 | const QPointF highlight_points[] = { |
67 | QPointF(label_rect.left() + 1, label_rect.top() + 1), | |
68 | QPointF(label_rect.right(), label_rect.top() + 1), | |
69 | QPointF(rect.right() - 1, nominal_offset), | |
70 | QPointF(label_rect.right(), label_rect.bottom() - 1), | |
71 | QPointF(label_rect.left() + 1, label_rect.bottom() - 1) | |
72 | }; | |
73 | ||
74 | p.setPen(Qt::transparent); | |
3e46726a JH |
75 | p.setBrush(colour); |
76 | p.drawPolygon(points, countof(points)); | |
77 | ||
c9b6acc1 JH |
78 | p.setPen(colour.lighter()); |
79 | p.setBrush(Qt::transparent); | |
80 | p.drawPolygon(highlight_points, countof(highlight_points)); | |
81 | ||
82 | p.setPen(colour.darker()); | |
83 | p.setBrush(Qt::transparent); | |
84 | p.drawPolygon(points, countof(points)); | |
85 | ||
3e46726a JH |
86 | // Paint the text |
87 | p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white); | |
88 | p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, text); | |
89 | } |