pulsescopewidget.cpp 3.76 KB
Newer Older
Oliver Bock's avatar
Oliver Bock committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
/******************************************************************************
 *   Copyright (C) 2009 by Oliver Bock                                        *
 *   oliver.bock[AT]aei.mpg.de                                                *
 *                                                                            *
 *   This file is part of PulsatingScience.                                   *
 *                                                                            *
 *   PulsatingScience is free software: you can redistribute it and/or modify *
 *   it under the terms of the GNU General Public License as published        *
 *   by the Free Software Foundation, version 3 of the License.               *
 *                                                                            *
 *   PulsatingScience is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of           *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
 *   GNU General Public License for more details.                             *
 *                                                                            *
 *   You should have received a copy of the GNU General Public License        *
 *   along with PulsatingScience. If not, see <http://www.gnu.org/licenses/>. *
 *                                                                            *
 ******************************************************************************/

#include "pulsescopewidget.h"

PulseScopeWidget::PulseScopeWidget(QWidget *parent) : QGraphicsView(parent),
	m_scene(),
	m_data(),
	m_marker()
{
Oliver Bock's avatar
Oliver Bock committed
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
	setViewport(new QGLWidget(QGLFormat(QGL::AlphaChannel | QGL::SampleBuffers)));
	QGLWidget *glScope = (QGLWidget*) viewport();
	if(!glScope->format().directRendering()) {
		qWarning("Sorry, no direct rendering support for pulse scope...");
	}
	if(!glScope->format().doubleBuffer()) {
		qWarning("Sorry, no double buffering support for pulse scope...");
	}
	if(!glScope->format().rgba()) {
		qWarning("Sorry, no RGBA support for pulse scope...");
	}
	if(!glScope->format().alpha()) {
		qWarning("Sorry, no alpha channel support for pulse scope...");
	}
	if(!glScope->format().sampleBuffers()) {
		qWarning("Sorry, no multisampling support for pulse scope...");
	}

Oliver Bock's avatar
Oliver Bock committed
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89
	m_scopeSizeH = 360;
	m_scopeSizeV = 0;

	setScene(&m_scene);
	m_data.fill(0.0f, m_scopeSizeH);
	m_marker.setPen(QPen(Qt::red));

	// TODO: proof of concept only!
	for(int i = 0; i < m_scopeSizeH; ++i) {
		m_data[i] = pow(i-180,2);
	}

	drawCurve(m_data);
}

PulseScopeWidget::~PulseScopeWidget()
{

}

void PulseScopeWidget::resizeEvent(QResizeEvent *event)
{
	Q_UNUSED(event);

	fitInView(m_scene.itemsBoundingRect(), Qt::IgnoreAspectRatio);
}

void PulseScopeWidget::drawCurve(const QVector<float>& vector)
{
	m_data = vector;

	// TODO: proof of concept only!

	QVector<float> checkMax(m_data);
	qSort(checkMax.begin(), checkMax.end());
	m_scopeSizeV = (int)ceil(checkMax.last()) * 2;

	m_scene.addLine(0.0f, 0.0f, 0.0f, m_scopeSizeV, QPen(Qt::white));
	m_scene.addLine(0.0f, m_scopeSizeV / 2, m_scopeSizeH, m_scopeSizeV / 2, QPen(Qt::white));

	QPainterPath pulsePath(QPoint(0.0f, m_scopeSizeV / 2));
	for(int i = 0; i < m_scopeSizeH; ++i) {
		pulsePath.lineTo(i,m_data[i]);
	}
Oliver Bock's avatar
Oliver Bock committed
90
	m_scene.addPath(pulsePath, QPen(Qt::yellow));
Oliver Bock's avatar
Oliver Bock committed
91

92 93 94 95 96
	if(m_marker.scene() == 0) {
		m_marker.setLine(0.0, 0.0, 0.0, m_scopeSizeV);
		m_scene.addItem(&m_marker);
	}

Oliver Bock's avatar
Oliver Bock committed
97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
	fitInView(m_scene.itemsBoundingRect(), Qt::IgnoreAspectRatio);
}

void PulseScopeWidget::markerStep(float stepSize) {
	if(m_marker.line().x1() < m_scopeSizeH) {
		QLineF line = m_marker.line();
		line.translate(stepSize, 0);
		m_marker.setLine(line);
	}
	else {
		markerReset();
	}
}

void PulseScopeWidget::markerReset() {
	m_marker.setLine(0.0, 0.0, 0.0, m_scopeSizeV);
}