1 files changed, 138 insertions, 0 deletions
diff --git a/kgamma/kcmkgamma/gammactrl.cpp b/kgamma/kcmkgamma/gammactrl.cpp
new file mode 100644
index 00000000..2052fd34
--- /dev/null
+++ b/kgamma/kcmkgamma/gammactrl.cpp
@@ -0,0 +1,138 @@
+/***************************************************************************
+                          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());
+  }
+}
+