2 * This file is part of the sigrok project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
25 const QSizeF Signal::LabelPadding(4, 0);
27 Signal::Signal(QString name) :
32 QString Signal::get_name() const
37 void Signal::paint_label(QPainter &p, const QRect &rect)
39 p.setBrush(get_colour());
41 const QString text(_name);
42 const QColor colour = get_colour();
44 const QSizeF text_size = p.boundingRect(
45 QRectF(0, 0, rect.width(), 0), 0, text).size();
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());
58 const QPointF points[] = {
60 label_rect.topRight(),
61 QPointF(rect.right(), nominal_offset),
62 label_rect.bottomRight(),
63 label_rect.bottomLeft()
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)
74 p.setPen(Qt::transparent);
76 p.drawPolygon(points, countof(points));
78 p.setPen(colour.lighter());
79 p.setBrush(Qt::transparent);
80 p.drawPolygon(highlight_points, countof(highlight_points));
82 p.setPen(colour.darker());
83 p.setBrush(Qt::transparent);
84 p.drawPolygon(points, countof(points));
87 p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white);
88 p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, text);