Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 516 insertions, 0 deletions

diff --git a/kmix/ksmallslider.cpp b/kmix/ksmallslider.cpp
new file mode 100644
index 00000000..38e43639
--- /dev/null
+++ b/kmix/ksmallslider.cpp
@@ -0,0 +1,516 @@
+/*
+ * KMix -- KDE's full featured mini mixer
+ *
+ *
+ * Copyright (C) 2000 Stefan Schimanski <1Stein@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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 <kdebug.h>
+
+#include <qwidget.h>
+#include <qpainter.h>
+#include <qcolor.h>
+#include <qbrush.h>
+#include <qstyle.h>
+
+#include "kglobalsettings.h"
+#include "ksmallslider.h"
+
+/*
+static const QColor mutedHighColor2 = "#FFFFFF";
+static const QColor mutedLowColor2 = "#808080";
+static const QColor backColor2 = "#000000";
+*/
+
+KSmallSlider::KSmallSlider( QWidget *parent, const char *name )
+    : QWidget( parent, name ),  _orientation(  Qt::Vertical )
+{
+    init();
+}
+
+KSmallSlider::KSmallSlider(  Qt::Orientation orientation, QWidget *parent, const char *name )
+    : QWidget( parent, name ), _orientation( orientation )
+{
+    init();
+}
+
+KSmallSlider::KSmallSlider( int minValue, int maxValue, int pageStep,
+                  int value, Qt::Orientation orientation,
+                  QWidget *parent, const char *name )
+    : QWidget( parent, name ),
+      QRangeControl( minValue, maxValue, 1, pageStep, value ),  _orientation( orientation)
+{
+    init();
+    //    sliderVal = value;
+}
+
+void KSmallSlider::init()
+{
+    // !! the following 2 values must be -1, to make sure the values are not the real values.
+    // Otherwise some code below could determine that no change has happened and to send
+    // no signals or to do no initial paint.
+    //    sliderPos = -1;
+    //    state = Idle;
+    //track = TRUE;
+    //setMouseTracking(true);
+    grayed = false;
+    setFocusPolicy( TabFocus  );
+
+    colHigh = QColor(0,255,0);
+    colLow = QColor(255,0,0);
+    colBack = QColor(0,0,0);
+
+    grayHigh = QColor(255,255,255);
+    grayLow = QColor(128,128,128);
+    grayBack = QColor(0,0,0);
+}
+/*
+void KSmallSlider::setTracking( bool enable )
+{
+    track = enable;
+}
+*/
+int KSmallSlider::positionFromValue( int v ) const
+{
+    return QRangeControl::positionFromValue( v, available() );
+}
+
+int KSmallSlider::valueFromPosition( int p ) const
+{
+    if ( _orientation == Qt::Vertical ) {
+	// Coordiante System starts at TopLeft, but the slider values increase from Bottom to Top
+	// Thus "revert" the position
+	int avail = available();
+	return QRangeControl::valueFromPosition( avail - p, avail );
+    }
+    else {
+	// Horizontal everything is fine. Slider values match with Coordinate System
+	return QRangeControl::valueFromPosition( p, available() );
+    }
+}
+
+void KSmallSlider::rangeChange()
+{
+    /*
+    int newPos = positionFromValue( QRangeControl::value() );
+    if ( newPos != sliderPos ) {
+	sliderPos = newPos;
+    }
+    */
+    update();
+}
+
+void KSmallSlider::valueChange()
+{
+    //kdDebug(67100) << "KSmallSlider::valueChange() value=" << value() << "\n";
+    update();
+    emit valueChanged(value());
+    /*
+	if ( sliderVal != QRangeControl::value() ) {
+        //int newPos = positionFromValue( QRangeControl::value() );
+	//sliderPos = newPos;
+        sliderVal = QRangeControl::value();
+	update();
+	emit valueChanged(value());
+    }
+    */
+}
+
+void KSmallSlider::resizeEvent( QResizeEvent * )
+{
+    update();
+    //QWidget::resizeEvent( ev );
+}
+
+//  Returns the really available space for the slider. If there is no space, 0 is returned;
+int KSmallSlider::available() const
+{
+    int available = 0;
+    if ( _orientation == Qt::Vertical) {
+	available = height();
+    }
+    else {
+	available = width();
+    }
+    if ( available > 1 ) {
+	available -= 2;
+    }
+    else {
+	available = 0;
+    }
+    return available;
+}
+
+
+
+namespace
+{
+
+void gradient( QPainter &p, bool hor, const QRect &rect, const QColor &ca, const QColor &cb, int /*ncols*/)
+{
+   int rDiff, gDiff, bDiff;
+   int rca, gca, bca, rcb, gcb, bcb;
+
+   register int x, y;
+
+   if ((rect.width()<=0) || (rect.height()<=0)) return;
+
+   rDiff = (rcb = cb.red())   - (rca = ca.red());
+   gDiff = (gcb = cb.green()) - (gca = ca.green());
+   bDiff = (bcb = cb.blue())  - (bca = ca.blue());
+
+   register int rl = rca << 16;
+   register int gl = gca << 16;
+   register int bl = bca << 16;
+
+   int rcdelta = ((1<<16) / ((!hor) ? rect.height() : rect.width())) * rDiff;
+   int gcdelta = ((1<<16) / ((!hor) ? rect.height() : rect.width())) * gDiff;
+   int bcdelta = ((1<<16) / ((!hor) ? rect.height() : rect.width())) * bDiff;
+
+   // these for-loops could be merged, but the if's in the inner loop
+   // would make it slow
+   if (!hor)
+   {
+      for ( y = rect.top(); y <= rect.bottom(); y++ ) {
+         rl += rcdelta;
+         gl += gcdelta;
+         bl += bcdelta;
+
+         p.setPen(QColor(rl>>16, gl>>16, bl>>16));
+         p.drawLine(rect.left(), y, rect.right(), y);
+      }
+   } else
+   {
+      for( x = rect.left(); x <= rect.right(); x++) {
+         rl += rcdelta;
+         gl += gcdelta;
+         bl += bcdelta;
+
+         p.setPen(QColor(rl>>16, gl>>16, bl>>16));
+         p.drawLine(x, rect.top(), x, rect.bottom());
+      }
+   }
+}
+
+QColor interpolate( QColor low, QColor high, int percent ) {
+    if ( percent<=0 ) return low; else
+    if ( percent>=100 ) return high; else
+    return QColor(
+        low.red() + (high.red()-low.red()) * percent/100,
+        low.green() + (high.green()-low.green()) * percent/100,
+        low.blue() + (high.blue()-low.blue()) * percent/100 );
+}
+
+}
+
+void KSmallSlider::paintEvent( QPaintEvent * )
+{
+//    kdDebug(67100) << "KSmallSlider::paintEvent: width() = " << width() << ", height() = " << height() << endl;
+   QPainter p( this );
+
+   int sliderPos = positionFromValue( QRangeControl::value() );
+
+   // ------------------------ draw 3d border ---------------------------------------------
+   style().drawPrimitive ( QStyle::PE_Panel, &p, QRect( 0, 0, width(), height() ), colorGroup(), TRUE );
+
+
+   // ------------------------ draw lower/left part ----------------------------------------
+   if ( width()>2 && height()>2 )
+   {
+       if (  _orientation == Qt::Horizontal ) {
+         QRect outer = QRect( 1, 1, sliderPos, height() - 2 );
+//	 kdDebug(67100) << "KSmallSlider::paintEvent: outer = " << outer << endl;
+
+         if ( grayed )
+             gradient( p, true, outer, grayLow,
+                       interpolate( grayLow, grayHigh, 100*sliderPos/(width()-2) ),
+                       32 );
+         else
+             gradient( p, true, outer, colLow,
+                       interpolate( colLow, colHigh, 100*sliderPos/(width()-2) ),
+                       32 );
+      }
+      else {
+         QRect outer = QRect( 1, height()-sliderPos-1, width() - 2, sliderPos-1 );
+/*
+	 kdDebug(67100) << "KSmallSlider::paintEvent: sliderPos=" << sliderPos
+			<< "height()=" << height()
+			<< "width()=" << width()
+			<< "outer = " << outer << endl;
+*/
+         if ( grayed )
+             gradient( p, false, outer,
+                       interpolate( grayLow, grayHigh, 100*sliderPos/(height()-2) ),
+                       grayLow, 32 );
+         else
+             gradient( p, false, outer,
+                       interpolate( colLow, colHigh, 100*sliderPos/(height()-2) ),
+                       colLow, 32 );
+      }
+
+      // -------- draw upper/right part --------------------------------------------------
+      QRect inner;
+      if ( _orientation == Qt::Vertical ) {
+	  inner = QRect( 1, 1, width() - 2, height() - 2 -sliderPos );
+      }
+      else {
+	  inner = QRect( sliderPos + 1, 1, width() - 2 - sliderPos, height() - 2 );
+      }
+	
+      if ( grayed ) {
+          p.setBrush( grayBack );
+          p.setPen( grayBack );
+      } else {
+          p.setBrush( colBack );
+          p.setPen( colBack );
+      }
+      p.drawRect( inner );
+   }
+}
+
+void KSmallSlider::mousePressEvent( QMouseEvent *e )
+{
+    //resetState();
+
+   if ( e->button() == RightButton ) {
+      return;
+   }
+
+   //   state = Dragging;
+   //emit sliderPressed();
+
+   int pos = goodPart( e->pos() );
+   moveSlider( pos );
+}
+
+void KSmallSlider::mouseMoveEvent( QMouseEvent *e )
+{
+    /*
+    if ( state != Dragging )
+        return;
+    */
+    int pos = goodPart( e->pos() );
+    moveSlider( pos );
+}
+
+void KSmallSlider::wheelEvent( QWheelEvent * e)
+{
+//    kdDebug(67100) << "KSmallslider::wheelEvent()" << endl;
+    /* Unfortunately KSmallSlider is no MixDeviceWidget, so we don't have access to
+     * the MixDevice.
+     */
+    int inc = ( maxValue() - minValue() ) / 20;
+    if ( inc < 1)
+	inc = 1;
+
+    //kdDebug(67100) << "KSmallslider::wheelEvent() inc=" << inc << "delta=" << e->delta() << endl;
+    if ( e->delta() > 0 ) {
+	QRangeControl::setValue( QRangeControl::value() + inc );
+    }
+    else {
+	QRangeControl::setValue( QRangeControl::value() - inc );
+    }
+    e->accept(); // Accept the event
+
+    // Hint: Qt autmatically triggers a valueChange() when we do setValue()
+}
+
+void KSmallSlider::mouseReleaseEvent( QMouseEvent * )
+{
+    //resetState();
+}
+
+/*
+ * Moves slider to a dedicated position. If the value has changed
+ */
+void KSmallSlider::moveSlider( int pos )
+{
+    int  a = available();
+    int newPos = QMIN( a, QMAX( 0, pos ) );  // keep it inside the available bounds of the slider
+    int newVal = valueFromPosition( newPos );
+
+    if ( newVal != QRangeControl::value() ) {
+        //QRangeControl::directSetValue( sliderVal );
+	QRangeControl::setValue( newVal );
+        emit valueChanged( value() ); //  Only for external use
+    }
+    update();
+}
+
+/*
+void KSmallSlider::resetState()
+{
+    switch ( state ) {
+    case Dragging: {
+        QRangeControl::setValue( valueFromPosition( sliderPos ) );
+        emit sliderReleased();
+        break;
+    }
+    case Idle:
+       break;
+
+    default:
+        qWarning("KSmallSlider: (%s) in wrong state", name( "unnamed" ) );
+    }
+    state = Idle;
+}
+*/
+
+void KSmallSlider::setValue( int value )
+{
+    QRangeControl::setValue( value );
+}
+
+void KSmallSlider::addStep()
+{
+    addPage();
+}
+
+void KSmallSlider::subtractStep()
+{
+    subtractPage();
+}
+
+int KSmallSlider::goodPart( const QPoint &p ) const
+{
+    if ( _orientation == Qt::Vertical ) {
+	return p.y() - 1;
+    }
+    else {
+	return p.x() - 1;
+    }
+}
+
+/***************** SIZE STUFF START ***************/
+QSize KSmallSlider::sizeHint() const
+{
+    //constPolish();
+    const int length = 25;
+    const int thick  = 10;
+
+    if (  _orientation == Qt::Vertical )
+        return QSize( thick, length );
+    else
+        return QSize( length, thick );
+}
+
+
+QSize KSmallSlider::minimumSizeHint() const
+{
+    QSize s(10,10);
+    return s;
+}
+
+
+QSizePolicy KSmallSlider::sizePolicy() const
+{
+
+    if ( _orientation == Qt::Vertical ) {
+	//kdDebug(67100) << "KSmallSlider::sizePolicy() vertical value=(Fixed,MinimumExpanding)\n";
+	return QSizePolicy(  QSizePolicy::Fixed, QSizePolicy::Expanding );
+    }
+    else {
+	//kdDebug(67100) << "KSmallSlider::sizePolicy() horizontal value=(MinimumExpanding,Fixed)\n";
+        return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
+    }
+}
+/***************** SIZE STUFF END ***************/
+
+
+int KSmallSlider::minValue() const
+{
+    return QRangeControl::minValue();
+}
+
+int KSmallSlider::maxValue() const
+{
+    return QRangeControl::maxValue();
+}
+
+int KSmallSlider::lineStep() const
+{
+    return QRangeControl::lineStep();
+}
+
+int KSmallSlider::pageStep() const
+{
+    return QRangeControl::pageStep();
+}
+
+void KSmallSlider::setLineStep( int i )
+{
+    setSteps( i, pageStep() );
+}
+
+void KSmallSlider::setPageStep( int i )
+{
+    setSteps( lineStep(), i );
+}
+
+//  Only for external acces. You MUST use QRangeControl::value() internally.
+int KSmallSlider::value() const
+{
+    return QRangeControl::value();
+}
+
+/*
+void KSmallSlider::paletteChange ( const QPalette &) {
+    if ( grayed ) {
+	setColors(mutedLowColor2, mutedHighColor2, backColor2 );
+    }
+    else {
+	// ignore the QPalette and use the values from KGlobalSettings instead
+	//const QColorGroup& qcg = palette().active();
+	setColors(KGlobalSettings::baseColor(), KGlobalSettings::highlightColor(), backColor2 );
+    }
+}
+*/
+
+void KSmallSlider::setGray( bool value )
+{
+   if ( grayed!=value )
+   {
+      grayed = value;
+      update();
+      //repaint();
+   }
+}
+
+bool KSmallSlider::gray() const
+{
+   return grayed;
+}
+
+void KSmallSlider::setColors( QColor high, QColor low, QColor back )
+{
+    colHigh = high;
+    colLow = low;
+    colBack = back;
+    update();
+    //repaint();
+}
+
+void KSmallSlider::setGrayColors( QColor high, QColor low, QColor back )
+{
+    grayHigh = high;
+    grayLow = low;
+    grayBack = back;
+    update();
+    //repaint();
+}
+
+#include "ksmallslider.moc"