2 * This file is part of the sigrok project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
24 #include "../../sigsession.h"
25 #include "../../signal.h"
27 #include <QMouseEvent>
29 #include <boost/foreach.hpp>
31 using namespace boost;
37 Viewport::Viewport(View &parent) :
41 setMouseTracking(true);
42 setAutoFillBackground(true);
43 setBackgroundRole(QPalette::Base);
46 int Viewport::get_total_height() const
49 BOOST_FOREACH(const shared_ptr<Signal> s,
50 _view.session().get_signals()) {
52 height += View::SignalHeight;
58 void Viewport::paintEvent(QPaintEvent *event)
60 const vector< shared_ptr<Signal> > &sigs =
61 _view.session().get_signals();
66 int offset = -_view.v_offset();
67 BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
71 const QRect signal_rect(0, offset,
72 width(), View::SignalHeight);
74 s->paint(p, signal_rect, _view.scale(), _view.offset());
76 offset += View::SignalHeight;
82 void Viewport::mousePressEvent(QMouseEvent *event)
86 _mouse_down_point = event->pos();
87 _mouse_down_offset = _view.offset();
90 void Viewport::mouseMoveEvent(QMouseEvent *event)
94 if(event->buttons() & Qt::LeftButton)
96 _view.set_scale_offset(_view.scale(),
98 (_mouse_down_point - event->pos()).x() *
103 void Viewport::mouseReleaseEvent(QMouseEvent *event)
108 void Viewport::wheelEvent(QWheelEvent *event)
111 _view.zoom(event->delta() / 120, event->x());