97b21be232888dc909fc36b4df9c573005815f39
[pulseview.git] / pv / views / trace / flag.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2014 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 "timemarker.hpp"
21 #include "view.hpp"
22 #include "ruler.hpp"
23
24 #include <QColor>
25 #include <QFormLayout>
26 #include <QLineEdit>
27 #include <QMenu>
28 #include <QApplication>
29
30 #include <libsigrokcxx/libsigrokcxx.hpp>
31
32 #include <pv/widgets/popup.hpp>
33
34 using std::enable_shared_from_this;
35 using std::shared_ptr;
36
37 namespace pv {
38 namespace views {
39 namespace trace {
40
41 const QColor Flag::FillColor(0x73, 0xD2, 0x16);
42
43 Flag::Flag(View &view, const pv::util::Timestamp& time, const QString &text) :
44         TimeMarker(view, FillColor, time),
45         text_(text)
46 {
47 }
48
49 Flag::Flag(const Flag &flag) :
50         TimeMarker(flag.view_, FillColor, flag.time_),
51         enable_shared_from_this<Flag>(flag)
52 {
53 }
54
55 bool Flag::enabled() const
56 {
57         return true;
58 }
59
60 QString Flag::get_text() const
61 {
62         const shared_ptr<TimeItem> ref_item = view_.get_reference_time_item();
63         if (ref_item == nullptr || ref_item.get() == this) {
64                 return text_;
65         } else {
66                 return Ruler::format_time_with_distance(
67                         ref_item->time(), ref_item->delta(time_),
68                         view_.tick_prefix(), view_.time_unit(), view_.tick_precision());
69         }
70 }
71
72 QRectF Flag::label_rect(const QRectF &rect) const
73 {
74         const shared_ptr<TimeItem> ref_item = view_.get_reference_time_item();
75         if (ref_item == nullptr || ref_item.get() == this) {
76                 return TimeMarker::label_rect(rect);
77
78         } else {
79                 // TODO: Remove code duplication between here and cursor.cpp
80                 const float x = get_x();
81
82                 QFontMetrics m(QApplication::font());
83                 QSize text_size = m.boundingRect(get_text()).size();
84
85                 const QSizeF label_size(
86                         text_size.width() + LabelPadding.width() * 2,
87                         text_size.height() + LabelPadding.height() * 2);
88                 const float top = rect.height() - label_size.height() -
89                         TimeMarker::ArrowSize - 0.5f;
90                 const float height = label_size.height();
91
92                 const pv::util::Timestamp& delta = ref_item->delta(time_);
93
94                 if (delta >= 0)
95                         return QRectF(x, top, label_size.width(), height);
96                 else
97                         return QRectF(x - label_size.width(), top, label_size.width(), height);
98         }
99 }
100
101 pv::widgets::Popup* Flag::create_popup(QWidget *parent)
102 {
103         using pv::widgets::Popup;
104
105         Popup *const popup = TimeMarker::create_popup(parent);
106         popup->set_position(parent->mapToGlobal(
107                 drag_point(parent->rect())), Popup::Bottom);
108
109         QFormLayout *const form = (QFormLayout*)popup->layout();
110
111         QLineEdit *const text_edit = new QLineEdit(popup);
112         text_edit->setText(text_);
113
114         connect(text_edit, SIGNAL(textChanged(const QString&)),
115                 this, SLOT(on_text_changed(const QString&)));
116
117         form->insertRow(0, tr("Text"), text_edit);
118
119         return popup;
120 }
121
122 QMenu* Flag::create_header_context_menu(QWidget *parent)
123 {
124         QMenu *const menu = new QMenu(parent);
125
126         QAction *const del = new QAction(tr("Delete"), this);
127         del->setShortcuts(QKeySequence::Delete);
128         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
129         menu->addAction(del);
130
131         return menu;
132 }
133
134 void Flag::delete_pressed()
135 {
136         on_delete();
137 }
138
139 void Flag::on_delete()
140 {
141         view_.remove_flag(shared_ptr<Flag>(shared_from_this()));
142 }
143
144 void Flag::on_text_changed(const QString &text)
145 {
146         text_ = text;
147         view_.time_item_appearance_changed(true, false);
148 }
149
150 } // namespace trace
151 } // namespace views
152 } // namespace pv