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
22 #include <libsigrokdecode/libsigrokdecode.h>
31 #include "annotation.h"
33 using namespace boost;
40 const double Annotation::EndCapWidth = 5;
41 const int Annotation::DrawPadding = 100;
43 const QColor Annotation::Colours[7] = {
44 QColor(0xFC, 0xE9, 0x4F), // Light Butter
45 QColor(0xFC, 0xAF, 0x3E), // Light Orange
46 QColor(0xE9, 0xB9, 0x6E), // Light Chocolate
47 QColor(0x8A, 0xE2, 0x34), // Light Green
48 QColor(0x72, 0x9F, 0xCF), // Light Blue
49 QColor(0xAD, 0x7F, 0xA8), // Light Plum
50 QColor(0xEF, 0x29, 0x29) // Light Red
53 Annotation::Annotation(const srd_proto_data *const pdata) :
54 _start_sample(pdata->start_sample),
55 _end_sample(pdata->end_sample),
56 _format(pdata->ann_format)
58 const char *const *annotations = (char**)pdata->data;
60 _annotations.push_back(QString(*annotations));
65 void Annotation::paint(QPainter &p, QColor text_color, int text_height,
66 int left, int right, double samples_per_pixel, double pixels_offset,
69 const int h = (text_height * 3) / 2;
70 const double start = _start_sample / samples_per_pixel -
72 const double end = _end_sample / samples_per_pixel -
74 const QColor fill = Colours[(_format * (countof(Colours) / 2 + 1)) %
76 const QColor outline(fill.darker());
78 if (start > right + DrawPadding || end < left - DrawPadding)
81 if (_start_sample == _end_sample)
82 draw_instant(p, fill, outline, text_color, h,
85 draw_range(p, fill, outline, text_color, h,
89 void Annotation::draw_instant(QPainter &p, QColor fill, QColor outline,
90 QColor text_color, int h, double x, int y)
92 const QString text = _annotations.empty() ?
93 QString() : _annotations.back();
94 const double w = min(p.boundingRect(QRectF(), 0, text).width(),
96 const QRectF rect(x - w / 2, y - h / 2, w, h);
100 p.drawRoundedRect(rect, h / 2, h / 2);
102 p.setPen(text_color);
103 p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
106 void Annotation::draw_range(QPainter &p, QColor fill, QColor outline,
107 QColor text_color, int h, double start, double end, int y)
109 const double cap_width = min((end - start) / 2, EndCapWidth);
112 QPointF(start, y + .5f),
113 QPointF(start + cap_width, y + .5f - h / 2),
114 QPointF(end - cap_width, y + .5f - h / 2),
115 QPointF(end, y + .5f),
116 QPointF(end - cap_width, y + .5f + h / 2),
117 QPointF(start + cap_width, y + .5f + h / 2)
122 p.drawConvexPolygon(pts, countof(pts));
124 if (_annotations.empty())
127 QRectF rect(start + cap_width, y - h / 2,
128 end - start - cap_width * 2, h);
129 p.setPen(text_color);
131 // Try to find an annotation that will fit
132 QString best_annotation;
135 BOOST_FOREACH(QString &a, _annotations) {
136 const int w = p.boundingRect(QRectF(), 0, a).width();
137 if (w <= rect.width() && w > best_width)
138 best_annotation = a, best_width = w;
141 if (best_annotation.isEmpty())
142 best_annotation = _annotations.back();
144 // If not ellide the last in the list
145 p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
146 best_annotation, Qt::ElideRight, rect.width()));
149 } // namespace decode