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// Copyright 2004 "Gilles Degottex"
// This file is part of "fmit"
// "fmit" 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; either version 2 of the License, or
// (at your option) any later version.
//
// "fmit" 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "GLSample.h"
#include <cassert>
#include <cmath>
#include <iostream>
using namespace std;
#include <qtimer.h>
#include <qtooltip.h>
#include <qimage.h>
#include <qboxlayout.h>
#include <qwidgetaction.h>
#include <QPainter>
GLSample::GLSample(QWidget* parent)
: QOpenGLWidget(parent)
, View(tr("Waveform"), this)
, m_font("Helvetica")
, m_max_value(1.0)
{
// settings
setting_show->setIcon(QIcon(":/fmit/ui/images/module_waveformperiod.svg"));
setting_show->setChecked(false);
hide();
setting_hasFading = new QAction(tr("Show fading"), this);
setting_hasFading->setCheckable(true);
connect(setting_hasFading, SIGNAL(toggled(bool)), this, SLOT(update()));
m_popup_menu.addAction(setting_hasFading);
QHBoxLayout* numFadingActionLayout = new QHBoxLayout(&m_popup_menu);
QLabel* numFadingActionTitle = new QLabel(tr("Number of fading"), &m_popup_menu);
numFadingActionLayout->addWidget(numFadingActionTitle);
setting_spinNumFading = new QSpinBox(&m_popup_menu);
setting_spinNumFading->setMinimum(1);
setting_spinNumFading->setMaximum(10000);
setting_spinNumFading->setSingleStep(1);
setting_spinNumFading->setValue(20);
setting_spinNumFading->setToolTip(tr("Number of fading"));
connect(setting_spinNumFading, SIGNAL(valueChanged(int)), this, SLOT(update()));
numFadingActionLayout->addWidget(setting_spinNumFading);
QWidget* numFadingActionWidget = new QWidget(&m_popup_menu);
numFadingActionWidget->setLayout(numFadingActionLayout);
QWidgetAction* numFadingAction = new QWidgetAction(&m_popup_menu);
numFadingAction->setDefaultWidget(numFadingActionWidget);
m_popup_menu.addAction(numFadingAction);
}
void GLSample::save()
{
s_settings->setValue("hasFading", setting_hasFading->isChecked());
s_settings->setValue("spinNumFading", setting_spinNumFading->value());
}
void GLSample::load()
{
setting_hasFading->setChecked(s_settings->value("hasFading", setting_hasFading->isChecked()).toBool());
setting_spinNumFading->setValue(s_settings->value("spinNumFading", setting_spinNumFading->value()).toInt());
}
void GLSample::clearSettings()
{
s_settings->remove("hasFading");
s_settings->remove("spinNumFading");
}
GLSample::Sample::Sample(double t, const deque<double>& d)
{
time = t;
data = d;
max_value = 0.0;
for(size_t i=0; i<data.size(); i++)
max_value = max(max_value, abs(data[i]));
}
void GLSample::add(double time, const deque<double>& data)
{
m_samples.push_front(Sample(time, data));
if(setting_hasFading->isChecked())
while(!m_samples.empty() && int(m_samples.size())>setting_spinNumFading->value())
m_samples.pop_back();
else
while(!m_samples.empty() && m_samples.size()>1)
m_samples.pop_back();
}
void GLSample::initializeGL()
{
// Set the clear color to black
glClearColor(1.0, 1.0, 1.0, 0.0);
// glShadeModel( GL_FLAT );
glShadeModel( GL_SMOOTH );
glLoadIdentity();
}
void GLSample::paintGL()
{
glClear(GL_COLOR_BUFFER_BIT);
// name
glColor3f(0.75,0.75,0.75);
QPainter painter(this);
m_font.setPixelSize(20);
painter.setFont(m_font);
painter.drawText(2, 20, tr("Waveform's period"));
painter.end();
// horiz lines
glBegin(GL_LINES);
float gray = 0.5;
glColor3f(gray, gray, gray);
glVertex2i(0, height()/2);
glVertex2i(width(), height()/2);
glEnd();
if(m_max_value==0.0) m_max_value = 1.0;
// sample
if(!m_samples.empty())
{
m_max_value = 0.0;
for(int j=int(m_samples.size())-1; j>=0; j--)
{
m_max_value = max(m_max_value, abs(m_samples[j].max_value));
if(!setting_hasFading->isChecked()) j=-1;
}
for(int j=int(m_samples.size())-1; j>=0; j--)
{
if(m_max_value!=0.0)
{
glBegin(GL_LINE_STRIP);
float grey = float(j)/m_samples.size();
glColor3f(grey, grey, grey);
int size = int(m_samples[j].data.size());
float step = float(width())/size;
for(int i=size-1; i>0; i--)
glVertex2i(int((size-i-1)*step), int((m_samples[j].data[i]/m_max_value)*height()/2 + height()/2));
glVertex2i(width(), int((m_samples[j].data[0]/m_max_value)*height()/2 + height()/2));
glEnd();
}
if(!setting_hasFading->isChecked()) j=-1;
}
}
glFlush();
}
void GLSample::resizeGL( int w, int h )
{
// Set the new viewport size
glViewport(0, 0, (GLint)w, (GLint)h);
// Choose the projection matrix to be the matrix
// manipulated by the following calls
glMatrixMode(GL_PROJECTION);
// Set the projection matrix to be the identity matrix
glLoadIdentity();
// Define the dimensions of the Orthographic Viewing Volume
glOrtho(0.0, w, 0.0, h, 0.0, 1.0);
// Choose the modelview matrix to be the matrix
// manipulated by further calls
glMatrixMode(GL_MODELVIEW);
}
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