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Only show sampling points when zoomed in far enough.
[pulseview.git] / pv / views / trace / standardbar.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2016 Soeren Apel <soeren@apelpie.net>
5  * Copyright (C) 2012-2015 Joel Holdsworth <joel@airwebreathe.org.uk>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
19  */
20
21 #include <QAction>
22 #include <QMessageBox>
23
24 #include "standardbar.hpp"
25
26 #include <pv/mainwindow.hpp>
27 #include <pv/view/view.hpp>
28
29 using pv::views::TraceView::View;
30
31 namespace pv {
32 namespace views {
33
34 namespace trace {
35
36 StandardBar::StandardBar(Session &session, QWidget *parent,
37         View *view, bool add_default_widgets) :
38         QToolBar("Standard Trace View Toolbar", parent),
39         session_(session),
40         view_(view),
41         action_view_zoom_in_(new QAction(this)),
42         action_view_zoom_out_(new QAction(this)),
43         action_view_zoom_fit_(new QAction(this)),
44         action_view_zoom_one_to_one_(new QAction(this)),
45         action_view_show_cursors_(new QAction(this))
46 {
47         setObjectName(QString::fromUtf8("StandardBar"));
48
49         // Actions
50         action_view_zoom_in_->setText(tr("Zoom &In"));
51         action_view_zoom_in_->setIcon(QIcon::fromTheme("zoom-in",
52                 QIcon(":/icons/zoom-in.png")));
53         // simply using Qt::Key_Plus shows no + in the menu
54         action_view_zoom_in_->setShortcut(QKeySequence::ZoomIn);
55         connect(action_view_zoom_in_, SIGNAL(triggered(bool)),
56                 this, SLOT(on_actionViewZoomIn_triggered()));
57
58         action_view_zoom_out_->setText(tr("Zoom &Out"));
59         action_view_zoom_out_->setIcon(QIcon::fromTheme("zoom-out",
60                 QIcon(":/icons/zoom-out.png")));
61         action_view_zoom_out_->setShortcut(QKeySequence::ZoomOut);
62         connect(action_view_zoom_out_, SIGNAL(triggered(bool)),
63                 this, SLOT(on_actionViewZoomOut_triggered()));
64
65         action_view_zoom_fit_->setCheckable(true);
66         action_view_zoom_fit_->setText(tr("Zoom to &Fit"));
67         action_view_zoom_fit_->setIcon(QIcon::fromTheme("zoom-fit",
68                 QIcon(":/icons/zoom-fit.png")));
69         action_view_zoom_fit_->setShortcut(QKeySequence(Qt::Key_F));
70         connect(action_view_zoom_fit_, SIGNAL(triggered(bool)),
71                 this, SLOT(on_actionViewZoomFit_triggered(bool)));
72
73         action_view_zoom_one_to_one_->setText(tr("Zoom to O&ne-to-One"));
74         action_view_zoom_one_to_one_->setIcon(QIcon::fromTheme("zoom-original",
75                 QIcon(":/icons/zoom-original.png")));
76         action_view_zoom_one_to_one_->setShortcut(QKeySequence(Qt::Key_O));
77         connect(action_view_zoom_one_to_one_, SIGNAL(triggered(bool)),
78                 this, SLOT(on_actionViewZoomOneToOne_triggered()));
79
80         action_view_show_cursors_->setCheckable(true);
81         action_view_show_cursors_->setIcon(QIcon::fromTheme("show-cursors",
82                 QIcon(":/icons/show-cursors.svg")));
83         action_view_show_cursors_->setShortcut(QKeySequence(Qt::Key_C));
84         connect(action_view_show_cursors_, SIGNAL(triggered(bool)),
85                 this, SLOT(on_actionViewShowCursors_triggered()));
86         action_view_show_cursors_->setText(tr("Show &Cursors"));
87
88         connect(view_, SIGNAL(always_zoom_to_fit_changed(bool)),
89                 this, SLOT(on_always_zoom_to_fit_changed(bool)));
90
91         if (add_default_widgets)
92                 add_toolbar_widgets();
93 }
94
95 Session &StandardBar::session() const
96 {
97         return session_;
98 }
99
100 void StandardBar::add_toolbar_widgets()
101 {
102         // Setup the toolbar
103         addAction(action_view_zoom_in_);
104         addAction(action_view_zoom_out_);
105         addAction(action_view_zoom_fit_);
106         addAction(action_view_zoom_one_to_one_);
107         addSeparator();
108         addAction(action_view_show_cursors_);
109 }
110
111 QAction* StandardBar::action_view_zoom_in() const
112 {
113         return action_view_zoom_in_;
114 }
115
116 QAction* StandardBar::action_view_zoom_out() const
117 {
118         return action_view_zoom_out_;
119 }
120
121 QAction* StandardBar::action_view_zoom_fit() const
122 {
123         return action_view_zoom_fit_;
124 }
125
126 QAction* StandardBar::action_view_zoom_one_to_one() const
127 {
128         return action_view_zoom_one_to_one_;
129 }
130
131 QAction* StandardBar::action_view_show_cursors() const
132 {
133         return action_view_show_cursors_;
134 }
135
136 void StandardBar::on_actionViewZoomIn_triggered()
137 {
138         view_->zoom(1);
139 }
140
141 void StandardBar::on_actionViewZoomOut_triggered()
142 {
143         view_->zoom(-1);
144 }
145
146 void StandardBar::on_actionViewZoomFit_triggered(bool checked)
147 {
148         view_->zoom_fit(checked);
149 }
150
151 void StandardBar::on_actionViewZoomOneToOne_triggered()
152 {
153         view_->zoom_one_to_one();
154 }
155
156 void StandardBar::on_actionViewShowCursors_triggered()
157 {
158         const bool show = !view_->cursors_shown();
159         if (show)
160                 view_->centre_cursors();
161
162         view_->show_cursors(show);
163 }
164
165 void StandardBar::on_always_zoom_to_fit_changed(bool state)
166 {
167         action_view_zoom_fit_->setChecked(state);
168 }
169
170 } // namespace trace
171 } // namespace views
172 } // namespace pv