Use emplace_back() where possible.
[pulseview.git] / pv / view / timemarker.cpp
1 /*
2  * This file is part of the PulseView 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, see <http://www.gnu.org/licenses/>.
18  */
19
20 #include <algorithm>
21
22 #include <extdef.h>
23
24 #include "timemarker.hpp"
25
26 #include "view.hpp"
27 #include "pv/widgets/timestampspinbox.hpp"
28
29 #include <QApplication>
30 #include <QFormLayout>
31 #include <QFontMetrics>
32 #include <QPainter>
33
34 #include <pv/widgets/popup.hpp>
35
36 using std::max;
37 using std::min;
38
39 namespace pv {
40 namespace views {
41 namespace TraceView {
42
43 const int TimeMarker::ArrowSize = 4;
44
45 TimeMarker::TimeMarker(
46         View &view, const QColor &colour, const pv::util::Timestamp& time) :
47         TimeItem(view),
48         colour_(colour),
49         time_(time),
50         value_action_(nullptr),
51         value_widget_(nullptr),
52         updating_value_widget_(false)
53 {
54 }
55
56 const pv::util::Timestamp& TimeMarker::time() const
57 {
58         return time_;
59 }
60
61 void TimeMarker::set_time(const pv::util::Timestamp& time)
62 {
63         time_ = time;
64
65         if (value_widget_) {
66                 updating_value_widget_ = true;
67                 value_widget_->setValue(time);
68                 updating_value_widget_ = false;
69         }
70
71         view_.time_item_appearance_changed(true, true);
72 }
73
74 float TimeMarker::get_x() const
75 {
76         return ((time_ - view_.offset()) / view_.scale()).convert_to<float>();
77 }
78
79 QPoint TimeMarker::point(const QRect &rect) const
80 {
81         return QPoint(get_x(), rect.bottom());
82 }
83
84 QRectF TimeMarker::label_rect(const QRectF &rect) const
85 {
86         QFontMetrics m(QApplication::font());
87         const QSizeF text_size(
88                 max(m.boundingRect(get_text()).size().width(), ArrowSize),
89                 m.height());
90         const QSizeF label_size(text_size + LabelPadding * 2);
91         const float top = rect.height() - label_size.height() -
92                 TimeMarker::ArrowSize - 0.5f;
93         const float x = get_x();
94
95         return QRectF(QPointF(x - label_size.width() / 2, top), label_size);
96 }
97
98 QRectF TimeMarker::hit_box_rect(const ViewItemPaintParams &pp) const
99 {
100         const float x = get_x();
101         const float h = QFontMetrics(QApplication::font()).height();
102         return QRectF(x - h / 2.0f, pp.top(), h, pp.height());
103 }
104
105 void TimeMarker::paint_label(QPainter &p, const QRect &rect, bool hover)
106 {
107         if (!enabled())
108                 return;
109
110         const qreal x = ((time_ - view_.offset()) / view_.scale()).convert_to<qreal>();
111         const QRectF r(label_rect(rect));
112
113         const QPointF points[] = {
114                 r.topLeft(),
115                 r.bottomLeft(),
116                 QPointF(max(r.left(), x - ArrowSize), r.bottom()),
117                 QPointF(x, rect.bottom()),
118                 QPointF(min(r.right(), x + ArrowSize), r.bottom()),
119                 r.bottomRight(),
120                 r.topRight()
121         };
122
123         const QPointF highlight_points[] = {
124                 QPointF(r.left() + 1, r.top() + 1),
125                 QPointF(r.left() + 1, r.bottom() - 1),
126                 QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
127                 QPointF(min(max(r.left() + 1, x), r.right() - 1),
128                         rect.bottom() - 1),
129                 QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
130                 QPointF(r.right() - 1, r.bottom() - 1),
131                 QPointF(r.right() - 1, r.top() + 1),
132         };
133
134         if (selected()) {
135                 p.setPen(highlight_pen());
136                 p.setBrush(Qt::transparent);
137                 p.drawPolygon(points, countof(points));
138         }
139
140         p.setPen(Qt::transparent);
141         p.setBrush(hover ? colour_.lighter() : colour_);
142         p.drawPolygon(points, countof(points));
143
144         p.setPen(colour_.lighter());
145         p.setBrush(Qt::transparent);
146         p.drawPolygon(highlight_points, countof(highlight_points));
147
148         p.setPen(colour_.darker());
149         p.setBrush(Qt::transparent);
150         p.drawPolygon(points, countof(points));
151
152         p.setPen(select_text_colour(colour_));
153         p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, get_text());
154 }
155
156 void TimeMarker::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
157 {
158         if (!enabled())
159                 return;
160
161         const float x = get_x();
162         p.setPen(colour_.darker());
163         p.drawLine(QPointF(x, pp.top()), QPointF(x, pp.bottom()));
164 }
165
166 pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
167 {
168         using pv::widgets::Popup;
169
170         Popup *const popup = new Popup(parent);
171         popup->set_position(parent->mapToGlobal(
172                 point(parent->rect())), Popup::Bottom);
173
174         QFormLayout *const form = new QFormLayout(popup);
175         popup->setLayout(form);
176
177         value_widget_ = new pv::widgets::TimestampSpinBox(parent);
178         value_widget_->setValue(time_);
179
180         connect(value_widget_, SIGNAL(valueChanged(const pv::util::Timestamp&)),
181                 this, SLOT(on_value_changed(const pv::util::Timestamp&)));
182
183         form->addRow(tr("Time"), value_widget_);
184
185         return popup;
186 }
187
188 void TimeMarker::on_value_changed(const pv::util::Timestamp& value)
189 {
190         if (!updating_value_widget_)
191                 set_time(value);
192 }
193
194 } // namespace TraceView
195 } // namespace views
196 } // namespace pv