2 * This file is part of the PulseView 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
27 const int Signal::LabelHitPadding = 2;
29 Signal::Signal(QString name) :
34 QString Signal::get_name() const
39 void Signal::set_name(QString name)
44 void Signal::paint_label(QPainter &p, const QRect &rect, bool hover)
46 p.setBrush(get_colour());
48 const QColor colour = get_colour();
49 const float nominal_offset = get_nominal_offset(rect);
52 const QRectF label_rect = get_label_rect(rect);
55 const QPointF points[] = {
57 label_rect.topRight(),
58 QPointF(rect.right(), nominal_offset),
59 label_rect.bottomRight(),
60 label_rect.bottomLeft()
63 const QPointF highlight_points[] = {
64 QPointF(label_rect.left() + 1, label_rect.top() + 1),
65 QPointF(label_rect.right(), label_rect.top() + 1),
66 QPointF(rect.right() - 1, nominal_offset),
67 QPointF(label_rect.right(), label_rect.bottom() - 1),
68 QPointF(label_rect.left() + 1, label_rect.bottom() - 1)
71 p.setPen(Qt::transparent);
72 p.setBrush(hover ? colour.lighter() : colour);
73 p.drawPolygon(points, countof(points));
75 p.setPen(colour.lighter());
76 p.setBrush(Qt::transparent);
77 p.drawPolygon(highlight_points, countof(highlight_points));
79 p.setPen(colour.darker());
80 p.setBrush(Qt::transparent);
81 p.drawPolygon(points, countof(points));
84 p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white);
85 p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, _name);
88 bool Signal::pt_in_label_rect(const QRect &rect, const QPoint &point)
90 const QRectF label = get_label_rect(rect);
92 QPointF(label.left() - LabelHitPadding,
93 label.top() - LabelHitPadding),
95 label.bottom() + LabelHitPadding)
99 void Signal::compute_text_size(QPainter &p)
101 _text_size = p.boundingRect(QRectF(), 0, _name).size();
104 QRectF Signal::get_label_rect(const QRect &rect)
106 using pv::view::View;
108 const float nominal_offset = get_nominal_offset(rect);
109 const QSizeF label_size(
110 _text_size.width() + View::LabelPadding.width() * 2,
111 _text_size.height() + View::LabelPadding.height() * 2);
112 const float label_arrow_length = label_size.height() / 2;
114 rect.right() - label_arrow_length - label_size.width(),
115 nominal_offset - label_size.height() / 2,
116 label_size.width(), label_size.height());