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/***************************************************************************
gammactrl.cpp - description
-------------------
begin : Sun Oct 7 2001
copyright : (C) 2001 by Michael v.Ostheim
email : MvOstheim@web.de
***************************************************************************/
/***************************************************************************
* *
* This program 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. *
* *
***************************************************************************/
#include <qlabel.h>
#include <qlineedit.h>
#include <qstring.h>
#include <kdialog.h>
#include "gammactrl.h"
#include "xvidextwrap.h"
#include "displaynumber.h"
#include "gammactrl.moc"
GammaCtrl::GammaCtrl(QWidget *parent, XVidExtWrap *xvid, int channel, \
const QString& mingamma, const QString& maxgamma, const QString& setgamma, \
const char *name) : QHBox(parent, name)
{
int maxslider = (int)( ( maxgamma.toDouble() - mingamma.toDouble() \
+ 0.0005 ) * 20 );
int setslider = (int)( ( setgamma.toDouble() - mingamma.toDouble() \
+ 0.0005 ) * 20 );
setslider = (setslider > maxslider) ? maxslider : setslider;
setslider = (setslider < 0) ? 0 : setslider;
suspended = false;
changed=false;
ming = mingamma.toFloat();
mgamma = mingamma;
oldpos = setslider;
gchannel = channel;
xv = xvid;
setSpacing(KDialog::spacingHint());
slider = new QSlider(Horizontal, this);
slider->setFixedHeight(24);
slider->setTickmarks(QSlider::Below);
slider->setRange(0, maxslider);
slider->setTickInterval(2);
slider->setValue(setslider);
connect(slider, SIGNAL(valueChanged(int)), SLOT(setGamma(int)));
connect(slider, SIGNAL(sliderPressed()), SLOT(pressed()));
textfield = new DisplayNumber(this, 4, 2);
textfield->setText(setgamma);
}
GammaCtrl::~GammaCtrl()
{
}
/** set gamma, slider and textfield */
void GammaCtrl::setGamma(const QString& gamma){
int sliderpos;
sliderpos = (int)( ( gamma.toDouble() - mgamma.toDouble() + 0.0005 ) * 20 );
changed=true;
slider->setValue(sliderpos);
setGamma(sliderpos);
if (suspended) {
suspended=false;
textfield->setDisabled(false);
}
}
/** set slider and textfield */
void GammaCtrl::setControl(const QString& gamma){
int sliderpos;
sliderpos = (int)( ( gamma.toDouble() - mgamma.toDouble() + 0.0005 ) * 20 );
setCtrl(sliderpos);
}
/** Return the current gamma value with precision prec */
QString GammaCtrl::gamma(int prec){
QString gammatext;
gammatext.setNum(xv->getGamma(gchannel) + 0.0005, 'f', prec);
return(gammatext);
}
/** Slot: set gamma and textfield */
void GammaCtrl::setGamma(int sliderpos){
if (sliderpos != oldpos || changed) {
xv->setGamma(gchannel, ming+(float)(slider->value())*0.05);
textfield->setNum(xv->getGamma(gchannel));
oldpos = sliderpos;
changed=false;
emit gammaChanged(sliderpos);
}
}
/** Slot: set slider and textfield */
void GammaCtrl::setCtrl(int sliderpos){
if (suspended) {
suspended=false;
textfield->setDisabled(false);
}
oldpos = sliderpos;
slider->setValue(sliderpos);
textfield->setNum(xv->getGamma(gchannel));
}
/** Slot: disable textfield */
void GammaCtrl::suspend(){
if (!suspended) {
suspended = true;
textfield->setDisabled(true);
}
}
/** Slot: Change status of GammaCtrl when pressed */
void GammaCtrl::pressed(){
if (suspended) {
suspended=false;
textfield->setDisabled(false);
changed=true;
setGamma(slider->value());
}
}
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