Trace View: Move ruler time conversion from View to Ruler
[pulseview.git] / pv / views / trace / 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 #include <cmath>
22
23 #include <extdef.h>
24
25 #include "timemarker.hpp"
26
27 #include "pv/widgets/timestampspinbox.hpp"
28 #include "ruler.hpp"
29 #include "view.hpp"
30
31 #include <QApplication>
32 #include <QFontMetrics>
33 #include <QFormLayout>
34 #include <QPainter>
35
36 #include <pv/widgets/popup.hpp>
37
38 using std::max;
39 using std::min;
40
41 namespace pv {
42 namespace views {
43 namespace trace {
44
45 const int TimeMarker::ArrowSize = 4;
46
47 TimeMarker::TimeMarker(
48         View &view, const QColor &color, const pv::util::Timestamp& time) :
49         TimeItem(view),
50         color_(color),
51         time_(time),
52         value_action_(nullptr),
53         value_widget_(nullptr),
54         updating_value_widget_(false)
55 {
56 }
57
58 const pv::util::Timestamp& TimeMarker::time() const
59 {
60         return time_;
61 }
62
63 void TimeMarker::set_time(const pv::util::Timestamp& time)
64 {
65         time_ = time;
66
67         if (value_widget_) {
68                 updating_value_widget_ = true;
69                 value_widget_->setValue(view_.ruler()->get_ruler_time_from_absolute_time(time));
70                 updating_value_widget_ = false;
71         }
72
73         view_.time_item_appearance_changed(true, true);
74 }
75
76 float TimeMarker::get_x() const
77 {
78         // Use roundf() from cmath, std::roundf() causes Android issues (see #945).
79         return roundf(((time_ - view_.offset()) / view_.scale()).convert_to<float>()) + 0.5f;
80 }
81
82 QPoint TimeMarker::drag_point(const QRect &rect) const
83 {
84         (void)rect;
85
86         return QPoint(get_x(), view_.mapFromGlobal(QCursor::pos()).y());
87 }
88
89 QRectF TimeMarker::label_rect(const QRectF &rect) const
90 {
91         QFontMetrics m(QApplication::font());
92         const QSizeF text_size(
93                 max(m.boundingRect(get_text()).size().width(), ArrowSize),
94                 m.height());
95         const QSizeF label_size(text_size + LabelPadding * 2);
96         const float top = rect.height() - label_size.height() -
97                 TimeMarker::ArrowSize - 0.5f;
98         const float x = get_x();
99
100         return QRectF(QPointF(x - label_size.width() / 2, top), label_size);
101 }
102
103 QRectF TimeMarker::hit_box_rect(const ViewItemPaintParams &pp) const
104 {
105         const float x = get_x();
106         const float h = QFontMetrics(QApplication::font()).height();
107         return QRectF(x - h / 2.0f, pp.top(), h, pp.height());
108 }
109
110 void TimeMarker::paint_label(QPainter &p, const QRect &rect, bool hover)
111 {
112         if (!enabled())
113                 return;
114
115         const qreal x = get_x();
116         const QRectF r(label_rect(rect));
117
118         const QPointF points[] = {
119                 r.topLeft(),
120                 r.bottomLeft(),
121                 QPointF(max(r.left(), x - ArrowSize), r.bottom()),
122                 QPointF(x, rect.bottom()),
123                 QPointF(min(r.right(), x + ArrowSize), r.bottom()),
124                 r.bottomRight(),
125                 r.topRight()
126         };
127
128         const QPointF highlight_points[] = {
129                 QPointF(r.left() + 1, r.top() + 1),
130                 QPointF(r.left() + 1, r.bottom() - 1),
131                 QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
132                 QPointF(min(max(r.left() + 1, x), r.right() - 1),
133                         rect.bottom() - 1),
134                 QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
135                 QPointF(r.right() - 1, r.bottom() - 1),
136                 QPointF(r.right() - 1, r.top() + 1),
137         };
138
139         if (selected()) {
140                 p.setPen(highlight_pen());
141                 p.setBrush(Qt::transparent);
142                 p.drawPolygon(points, countof(points));
143         }
144
145         p.setPen(Qt::transparent);
146         p.setBrush(hover ? color_.lighter() : color_);
147         p.drawPolygon(points, countof(points));
148
149         p.setPen(color_.lighter());
150         p.setBrush(Qt::transparent);
151         p.drawPolygon(highlight_points, countof(highlight_points));
152
153         p.setPen(color_.darker());
154         p.setBrush(Qt::transparent);
155         p.drawPolygon(points, countof(points));
156
157         p.setPen(select_text_color(color_));
158         p.drawText(r, Qt::AlignCenter | Qt::AlignVCenter, get_text());
159 }
160
161 void TimeMarker::paint_fore(QPainter &p, ViewItemPaintParams &pp)
162 {
163         if (!enabled())
164                 return;
165
166         const float x = get_x();
167         p.setPen(color_.darker());
168         p.drawLine(QPointF(x, pp.top()), QPointF(x, pp.bottom()));
169 }
170
171 pv::widgets::Popup* TimeMarker::create_popup(QWidget *parent)
172 {
173         using pv::widgets::Popup;
174
175         Popup *const popup = new Popup(parent);
176         popup->set_position(parent->mapToGlobal(
177                 drag_point(parent->rect())), Popup::Bottom);
178
179         QFormLayout *const form = new QFormLayout(popup);
180         popup->setLayout(form);
181
182         value_widget_ = new pv::widgets::TimestampSpinBox(parent);
183         value_widget_->setValue(view_.ruler()->get_ruler_time_from_absolute_time(time_));
184
185         connect(value_widget_, SIGNAL(valueChanged(const pv::util::Timestamp&)),
186                 this, SLOT(on_value_changed(const pv::util::Timestamp&)));
187
188         form->addRow(tr("Time"), value_widget_);
189
190         return popup;
191 }
192
193 void TimeMarker::on_value_changed(const pv::util::Timestamp& value)
194 {
195         if (!updating_value_widget_)
196                 set_time(view_.ruler()->get_absolute_time_from_ruler_time(value));
197 }
198
199 } // namespace trace
200 } // namespace views
201 } // namespace pv