benoitrigolleau@211: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
benoitrigolleau@211: 
benoitrigolleau@211: /*	Sound Access	
benoitrigolleau@211: 		EASAIER client application.	
benoitrigolleau@211: 		Silogic 2007. Benoit Rigolleau. 
benoitrigolleau@211: 	
benoitrigolleau@211: 	This program is free software; you can redistribute it and/or    
benoitrigolleau@211: 	modify it under the terms of the GNU General Public License as    
benoitrigolleau@211: 	published by the Free Software Foundation; either version 2 of the    
benoitrigolleau@211: 	License, or (at your option) any later version.  See the file    
benoitrigolleau@211: 	COPYING included with this distribution for more information.
benoitrigolleau@211: */
benoitrigolleau@211: 
benoitrigolleau@211: #include  "Plotter.h"  
benoitrigolleau@211: #include <QtGui>
benoitrigolleau@211: 
benoitrigolleau@211: Plotter::Plotter(QWidget *parent):
benoitrigolleau@211: m_signalWidth(400),
benoitrigolleau@211: m_signalHeight(180),
benoitrigolleau@211: m_margin(5),
benoitrigolleau@211: m_curveMaskActive(false)
benoitrigolleau@211: {
benoitrigolleau@211: 	m_curveMask = new int[m_signalWidth];
benoitrigolleau@211: 	for(int i = 0 ; i < m_signalWidth ; i++){
benoitrigolleau@211: 		m_curveMask[i] = 0;
benoitrigolleau@211: 	}
benoitrigolleau@211: 
benoitrigolleau@211: 
benoitrigolleau@211: 	m_curve.push_back(QPoint(399,179));
benoitrigolleau@211: 	m_curve.push_back(QPoint(300,20));
benoitrigolleau@211: 	m_curve.push_back(QPoint(60,150));
benoitrigolleau@211: 	m_curve.push_back(QPoint(10,30));
benoitrigolleau@211: 	m_curve.push_back(QPoint(0,0));
benoitrigolleau@211: 
benoitrigolleau@211: 
benoitrigolleau@211: 	refreshPixmap();
benoitrigolleau@211: 
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::setCurveData(const QVector<QPoint> &data){
benoitrigolleau@211: 	m_curve = data;
benoitrigolleau@211: 	refreshPixmap();
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::clearCurve(){
benoitrigolleau@211: 	m_curve.clear();
benoitrigolleau@211: 	refreshPixmap();
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::paintEvent(QPaintEvent *event){
benoitrigolleau@211: 	QStylePainter painter(this);
benoitrigolleau@211:     painter.drawPixmap(0, 0, m_pixmap);
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::resizeEvent(QResizeEvent *event){
benoitrigolleau@211: 	refreshPixmap();
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::mousePressEvent(QMouseEvent *event){
benoitrigolleau@211: 	QRect rect(m_margin, m_margin,
benoitrigolleau@211:                m_signalWidth + m_margin, m_signalHeight + m_margin);
benoitrigolleau@211: 
benoitrigolleau@211:     if (event->button() == Qt::LeftButton) {
benoitrigolleau@211:         if (rect.contains(event->pos())) {
benoitrigolleau@211:             m_curveMaskActive = true;
benoitrigolleau@211: 			int x = event->pos().x()- m_margin;
benoitrigolleau@211: 			int y = event->pos().y()- m_margin;
benoitrigolleau@211: 			m_curveMask[x] = y;
benoitrigolleau@211: 			m_lastPoint.setX(x);
benoitrigolleau@211: 			m_lastPoint.setY(y);
benoitrigolleau@211:             setCursor(Qt::CrossCursor);
benoitrigolleau@211: 			refreshPixmap();
benoitrigolleau@211:         }
benoitrigolleau@211:     }
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::mouseMoveEvent(QMouseEvent *event){
benoitrigolleau@211: 	QRect rect(m_margin, m_margin,
benoitrigolleau@211:                m_signalWidth + m_margin , m_signalHeight + m_margin);
benoitrigolleau@211: 
benoitrigolleau@211: 	if(m_curveMaskActive && rect.contains(event->pos())){
benoitrigolleau@211: 		int x = event->pos().x() - m_margin;
benoitrigolleau@211: 		int y = event->pos().y() - m_margin;
benoitrigolleau@211: 		if(y>m_signalHeight-1)
benoitrigolleau@211: 			y= m_signalHeight-1;
benoitrigolleau@211: 		int xlast = m_lastPoint.x();
benoitrigolleau@211: 		int ylast = m_lastPoint.y();
benoitrigolleau@211: 
benoitrigolleau@211: 		//regul mask curve
benoitrigolleau@211: 		int minx, maxx, miny, maxy;
benoitrigolleau@211: 		if(x>xlast){
benoitrigolleau@211: 			minx = xlast;
benoitrigolleau@211: 			maxx = x;
benoitrigolleau@211: 		}else{
benoitrigolleau@211: 			minx = x;
benoitrigolleau@211: 			maxx = xlast;
benoitrigolleau@211: 		}
benoitrigolleau@211: 		if(y>ylast){
benoitrigolleau@211: 			miny = ylast;
benoitrigolleau@211: 			maxy = y;
benoitrigolleau@211: 		}else{
benoitrigolleau@211: 			miny = y;
benoitrigolleau@211: 			maxy = ylast;
benoitrigolleau@211: 		}
benoitrigolleau@211: 
benoitrigolleau@211: 		if((maxx - minx)>1){
benoitrigolleau@211: 			double incr = (double)(maxy - miny)/(double)(maxx - minx);
benoitrigolleau@211: 			if(x>xlast){
benoitrigolleau@211: 				for (int i = xlast + 1 ; i < x ; i++){
benoitrigolleau@211: 					if(ylast > y){
benoitrigolleau@211: 						m_curveMask[i] = ylast - (i-xlast)*incr;
benoitrigolleau@211: 					}else{
benoitrigolleau@211: 						m_curveMask[i] = ylast + (i-xlast)*incr;
benoitrigolleau@211: 					}
benoitrigolleau@211: 				}
benoitrigolleau@211: 			}else{
benoitrigolleau@211: 				for (int i = xlast - 1 ; i > x ; i--){
benoitrigolleau@211: 					if(ylast > y){
benoitrigolleau@211: 						m_curveMask[i] = ylast + (i-xlast)*incr;
benoitrigolleau@211: 					}else{
benoitrigolleau@211: 						m_curveMask[i] = ylast - (i-xlast)*incr;
benoitrigolleau@211: 					}
benoitrigolleau@211: 				}
benoitrigolleau@211: 			}
benoitrigolleau@211: 		}
benoitrigolleau@211: 		m_curveMask[x] = y;
benoitrigolleau@211: 		m_lastPoint.setX(x);
benoitrigolleau@211: 		m_lastPoint.setY(y);
benoitrigolleau@211: 		refreshPixmap();
benoitrigolleau@211: 	}
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::mouseReleaseEvent(QMouseEvent *event){
benoitrigolleau@211: 	 if ((event->button() == Qt::LeftButton) && m_curveMaskActive) {
benoitrigolleau@211:         m_curveMaskActive = false;
benoitrigolleau@211:         unsetCursor();
benoitrigolleau@211: 	 }
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::drawGrid(QPainter *painter){
benoitrigolleau@211: 	QPixmap pm(":icons/grid.png");
benoitrigolleau@211: 	painter->drawPixmap(0,0,pm);
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::drawCurve(QPainter *painter){
benoitrigolleau@211: 	QPolygonF polyline(m_signalWidth);
benoitrigolleau@211: 	for(int i = 0 ; i < m_curve.count() ; i++){
benoitrigolleau@211: 		polyline[i] = QPoint(m_curve.at(i).x()+m_margin, m_curve.at(i).y()+m_margin);
benoitrigolleau@211: 	}
benoitrigolleau@211: 	painter->setPen(Qt::green);
benoitrigolleau@211:     painter->drawPolyline(polyline);
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::drawMaskCurve(QPainter *painter){
benoitrigolleau@211: 
benoitrigolleau@211: 	QPolygonF polyline(m_signalWidth);
benoitrigolleau@211: 
benoitrigolleau@211: 	for(int i = 0 ; i < m_signalWidth ; i++){
benoitrigolleau@211: 		polyline[i] = QPoint(i+m_margin, m_curveMask[i]+m_margin);
benoitrigolleau@211: 	}
benoitrigolleau@211: 	painter->setPen(Qt::red);
benoitrigolleau@211:     painter->drawPolyline(polyline);
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::refreshPixmap(){
benoitrigolleau@211:     m_pixmap = QPixmap(size());
benoitrigolleau@211:     m_pixmap.fill(this, 0, 0);
benoitrigolleau@211: 
benoitrigolleau@211:     QPainter painter(&m_pixmap);
benoitrigolleau@211:     painter.initFrom(this);
benoitrigolleau@211:     drawGrid(&painter);
benoitrigolleau@211:     drawCurve(&painter);
benoitrigolleau@211: 	drawMaskCurve(&painter);
benoitrigolleau@211:     update();
benoitrigolleau@211: }
benoitrigolleau@211: 
benoitrigolleau@211: void Plotter::setMargin(int margin){
benoitrigolleau@211: 	m_margin = margin;
benoitrigolleau@211: }