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>
29 #include <boost/foreach.hpp>
33 #include "annotation.h"
41 const double Annotation::EndCapWidth = 5;
42 const int Annotation::DrawPadding = 100;
44 const QColor Annotation::Colours[7] = {
45 QColor(0xFC, 0xE9, 0x4F), // Light Butter
46 QColor(0xFC, 0xAF, 0x3E), // Light Orange
47 QColor(0xE9, 0xB9, 0x6E), // Light Chocolate
48 QColor(0x8A, 0xE2, 0x34), // Light Green
49 QColor(0x72, 0x9F, 0xCF), // Light Blue
50 QColor(0xAD, 0x7F, 0xA8), // Light Plum
51 QColor(0xEF, 0x29, 0x29) // Light Red
54 Annotation::Annotation(const srd_proto_data *const pdata) :
55 _start_sample(pdata->start_sample),
56 _end_sample(pdata->end_sample)
59 const srd_proto_data_annotation *const pda =
60 (const srd_proto_data_annotation*)pdata->data;
63 const char *const *annotations = (char**)pda->ann_text;
65 _annotations.push_back(QString(*annotations));
70 void Annotation::paint(QPainter &p, QColor text_color, int text_height,
71 int left, int right, double samples_per_pixel, double pixels_offset,
74 const int h = (text_height * 3) / 2;
75 const double start = _start_sample / samples_per_pixel -
77 const double end = _end_sample / samples_per_pixel -
79 const QColor fill = Colours[(_format * (countof(Colours) / 2 + 1)) %
81 const QColor outline(fill.darker());
83 if (start > right + DrawPadding || end < left - DrawPadding)
86 if (_start_sample == _end_sample)
87 draw_instant(p, fill, outline, text_color, h,
90 draw_range(p, fill, outline, text_color, h,
94 void Annotation::draw_instant(QPainter &p, QColor fill, QColor outline,
95 QColor text_color, int h, double x, int y)
97 const QString text = _annotations.empty() ?
98 QString() : _annotations.back();
99 const double w = min(p.boundingRect(QRectF(), 0, text).width(),
101 const QRectF rect(x - w / 2, y - h / 2, w, h);
105 p.drawRoundedRect(rect, h / 2, h / 2);
107 p.setPen(text_color);
108 p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
111 void Annotation::draw_range(QPainter &p, QColor fill, QColor outline,
112 QColor text_color, int h, double start, double end, int y)
114 const double cap_width = min((end - start) / 2, EndCapWidth);
117 QPointF(start, y + .5f),
118 QPointF(start + cap_width, y + .5f - h / 2),
119 QPointF(end - cap_width, y + .5f - h / 2),
120 QPointF(end, y + .5f),
121 QPointF(end - cap_width, y + .5f + h / 2),
122 QPointF(start + cap_width, y + .5f + h / 2)
127 p.drawConvexPolygon(pts, countof(pts));
129 if (_annotations.empty())
132 QRectF rect(start + cap_width, y - h / 2,
133 end - start - cap_width * 2, h);
134 p.setPen(text_color);
136 // Try to find an annotation that will fit
137 QString best_annotation;
140 BOOST_FOREACH(QString &a, _annotations) {
141 const int w = p.boundingRect(QRectF(), 0, a).width();
142 if (w <= rect.width() && w > best_width)
143 best_annotation = a, best_width = w;
146 if (best_annotation.isEmpty())
147 best_annotation = _annotations.back();
149 // If not ellide the last in the list
150 p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
151 best_annotation, Qt::ElideRight, rect.width()));
154 } // namespace decode