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Initialise Trace widgets when the trace is received by the View
[pulseview.git] / pv / view / viewport.cpp
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6fa02541 1/*
b3f22de0 2 * This file is part of the PulseView project.
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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, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
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21#include "view.h"
22#include "viewport.h"
6fa02541 23
8d634081 24#include "signal.h"
51e77110 25#include "../sigsession.h"
e3f65ace 26
7cd5faf8 27#include <QMouseEvent>
e9c41f8c 28
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29#include <boost/foreach.hpp>
30
31using namespace boost;
32using namespace std;
33
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34namespace pv {
35namespace view {
e9c41f8c 36
cdf7bea7 37Viewport::Viewport(View &parent) :
64b60583 38 QWidget(&parent),
adb4b10c 39 _view(parent)
6fa02541 40{
d7002724 41 setMouseTracking(true);
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42 setAutoFillBackground(true);
43 setBackgroundRole(QPalette::Base);
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44
45 connect(&_view, SIGNAL(signals_moved()),
46 this, SLOT(on_signals_moved()));
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47}
48
cdf7bea7 49int Viewport::get_total_height() const
a429590b 50{
07204819 51 int h = 0;
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52 const vector< shared_ptr<Signal> > sigs(
53 _view.session().get_signals());
54 BOOST_FOREACH(const shared_ptr<Signal> s, sigs) {
adb4b10c 55 assert(s);
07204819 56 h = max(s->get_v_offset() + View::SignalHeight, h);
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57 }
58
07204819 59 return h;
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60}
61
e314eca4 62void Viewport::paintEvent(QPaintEvent*)
d7002724 63{
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64 const vector< shared_ptr<Signal> > sigs(
65 _view.session().get_signals());
3e46726a 66
64b60583 67 QPainter p(this);
ce6e73a8 68 p.setRenderHint(QPainter::Antialiasing);
3e46726a 69
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70 if (_view.cursors_shown())
71 _view.cursors().draw_viewport_background(p, rect());
f76af637 72
3e46726a 73 // Plot the signal
2e575351 74 const int v_offset = _view.v_offset();
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75 BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
76 {
77 assert(s);
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78 s->paint(p, s->get_v_offset() - v_offset, 0, width(),
79 _view.scale(), _view.offset());
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80 }
81
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82 if (_view.cursors_shown())
83 _view.cursors().draw_viewport_foreground(p, rect());
f76af637 84
64b60583 85 p.end();
6fa02541 86}
009e1503 87
cdf7bea7 88void Viewport::mousePressEvent(QMouseEvent *event)
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89{
90 assert(event);
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91
92 _mouse_down_point = event->pos();
adb4b10c 93 _mouse_down_offset = _view.offset();
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94}
95
cdf7bea7 96void Viewport::mouseMoveEvent(QMouseEvent *event)
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97{
98 assert(event);
1dd95c70 99
333d5bbc 100 if (event->buttons() & Qt::LeftButton)
1dd95c70 101 {
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102 _view.set_scale_offset(_view.scale(),
103 _mouse_down_offset +
104 (_mouse_down_point - event->pos()).x() *
105 _view.scale());
1dd95c70 106 }
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107}
108
cdf7bea7 109void Viewport::wheelEvent(QWheelEvent *event)
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110{
111 assert(event);
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112
113 if (event->orientation() == Qt::Vertical) {
114 // Vertical scrolling is interpreted as zooming in/out
115 _view.zoom(event->delta() / 120, event->x());
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116 } else if (event->orientation() == Qt::Horizontal) {
117 // Horizontal scrolling is interpreted as moving left/right
118 _view.set_scale_offset(_view.scale(),
119 event->delta() * _view.scale()
120 + _view.offset());
ffd5cd20 121 }
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122}
123
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124void Viewport::on_signals_moved()
125{
126 update();
127}
128
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129} // namespace view
130} // namespace pv