1 files changed, 243 insertions, 0 deletions
diff --git a/arts/gui/kde/kvolumefader_impl.cpp b/arts/gui/kde/kvolumefader_impl.cpp
new file mode 100644
index 00000000..f3d09a0b
--- /dev/null
+++ b/arts/gui/kde/kvolumefader_impl.cpp
@@ -0,0 +1,243 @@
+/*
+    Copyright (  C ) 2003 Arnold Krille <arnold@arnoldarts.de>
+
+    This library 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;
+    version 2 of the License.
+
+    This library 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 library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+
+*/
+
+#include "kvolumefader_impl.h"
+
+#include <kdebug.h>
+#include <qpainter.h>
+#include <qstyle.h>
+#include <qfont.h>
+#include <qfontmetrics.h>
+#include <kglobalsettings.h>
+#include <klocale.h>
+#include <kpopupmenu.h>
+#include <kaction.h>
+#include <kinputdialog.h>
+
+KVolumeFader_impl::KVolumeFader_impl( QFrame* w )
+  : Arts::KFrame_impl( w ? w : new KVolumeFader_Widget( 0 ) )
+  , dB2VolCalc( -36, 6 )
+  , _dir( Arts::BottomToTop )
+  , dbmin_inupdate( false )
+  , dbmax_inupdate( false )
+  , direction_inupdate( false )
+  , ignoreUpdates( 0 )
+{
+	//kdDebug()<<"KVolumeFader_impl::KVolumeFader_impl( QFrame* w="<<w<<" )"<<endl;
+	_vfwidget = static_cast<KVolumeFader_Widget*>( _qwidget );
+	_vfwidget->setImpl( this );
+}
+
+KVolumeFader_impl::~KVolumeFader_impl() {
+}
+
+float KVolumeFader_impl::dbmin() { return dB2VolCalc::dbmin; }
+void KVolumeFader_impl::dbmin( float n ) {
+	if ( n != dB2VolCalc::dbmin && !dbmin_inupdate ) {
+		dbmin_inupdate = true;
+		dB2VolCalc::dbmin = n;
+		dbmin_changed( dbmin() );
+		dbmin_inupdate = false;
+	}
+}
+float KVolumeFader_impl::dbmax() { return dB2VolCalc::dbmax; }
+void KVolumeFader_impl::dbmax( float n ) {
+	if ( n != dB2VolCalc::dbmax && !dbmax_inupdate ) {
+		dbmax_inupdate = true;
+		dB2VolCalc::dbmax = n;
+		dbmax_changed( dbmax() );
+		dbmax_inupdate = false;
+	}
+}
+
+Arts::Direction KVolumeFader_impl::direction() { return _dir; }
+void KVolumeFader_impl::direction( Arts::Direction n ) {
+	if ( n != _dir && !direction_inupdate ) {
+		direction_inupdate = true;
+		_dir = n;
+		_vfwidget->setDirection( _dir );
+//		direction_changed( direction() );
+		direction_inupdate = false;
+	}
+}
+
+float KVolumeFader_impl::volume() { return _volume; }
+void KVolumeFader_impl::volume( float n ) {
+	//kdDebug() << k_funcinfo << n << " ignore: " << ignoreUpdates << endl;
+	if ( ignoreUpdates > 0 ) {
+		--ignoreUpdates;
+		return;
+	}
+	_volume = n;
+	_vfwidget->setValue( amptondb( _volume ) );
+}
+
+float KVolumeFader_impl::dbvolume() { return amptodb( _volume ); }
+void KVolumeFader_impl::dbvolume( float n ) {
+	//kdDebug() << k_funcinfo << n << endl;
+	normalizedvolume( dbtondb( n ) );
+}
+
+void KVolumeFader_impl::normalizedvolume( float n ) {
+	if ( ( ndbtodb( n ) > dbmin() ) && ( ndbtodb( n ) < dbmax() ) ) {
+		float amp = ndbtoamp( n );
+		if ( amp != _volume ) {
+			++ignoreUpdates;
+			//kdDebug() << k_funcinfo << ignoreUpdates << endl;
+			_volume = amp;
+			_vfwidget->setValue( n );
+			volume_changed( _volume );
+		}
+	}
+}
+
+void KVolumeFader_impl::constructor( float dbmin, float dbmax, Arts::Direction dir ) {
+	this->dbmin( dbmin ); this->dbmax( dbmax ); direction( dir );
+}
+
+
+
+KVolumeFader_Widget::KVolumeFader_Widget( QWidget* p, const char* n )
+  : QFrame( p,n )
+  , _impl( 0 )
+  , _inupdate( false )
+  , _value( -1 )
+  , _dir( Arts::BottomToTop )
+  , _menu( new KPopupMenu( this ) )
+  , _aExactValue( new KAction( i18n( "Set Exact Value..." ), KShortcut(), this, SLOT( exactValue() ), this ) )
+{
+	//kdDebug() << k_funcinfo << endl;
+	setMinimumSize( 10,10 );
+	_aExactValue->plug( _menu );
+}
+
+void KVolumeFader_Widget::setImpl( KVolumeFader_impl* n ) { _impl = n; update(); }
+
+KVolumeFader_Widget::~KVolumeFader_Widget() {
+	//kdDebug() << k_funcinfo << endl;
+}
+
+void KVolumeFader_Widget::setDirection( Arts::Direction n ) { _dir = n; update(); }
+
+void KVolumeFader_Widget::setValue( float n ) {
+	//kdDebug() << k_funcinfo << n << endl;
+	if ( n != _value ) {
+		_value = n;
+		update();
+	}
+}
+
+QColor KVolumeFader_Widget::interpolate(  QColor low, QColor high, float percent ) {
+	if (  percent<=0 ) return low; else
+	if (  percent>=1 ) return high; else
+		return QColor(
+			int( low.red() + ( high.red()-low.red() ) * percent ),
+			int( low.green() + ( high.green()-low.green() ) * percent ),
+			int( low.blue() + ( high.blue()-low.blue() ) * percent ) );
+}
+
+void KVolumeFader_Widget::drawContents( QPainter* p ){
+	if ( _dir==Arts::BottomToTop || _dir==Arts::BottomToTop ) {
+		float h;
+		if ( _dir==Arts::BottomToTop ) h = contentsRect().height() * ( 1 - _value );
+			else h = contentsRect().height() * _value;
+		for ( int i=int( h ); i<contentsRect().height(); i++ ) {
+			p->setPen( interpolate( colorGroup().light(), colorGroup().highlight(), float( i )/contentsRect().height() ) );
+			p->drawLine( contentsRect().left(), this->frameWidth() + i, contentsRect().right(), this->frameWidth() + i );
+		}
+		p->setPen( colorGroup().dark() );
+		p->drawLine( contentsRect().left(), this->frameWidth() + int( h ), contentsRect().right(), this->frameWidth() + int( h ) );
+	} else {
+		float w;
+		p->translate( this->width(),0 );
+		if ( _dir==Arts::LeftToRight ) w = - contentsRect().width() * ( 1 - _value );
+			else w = - contentsRect().width() * _value;
+		for ( int i=int( w ); i>=-contentsRect().width(); i-- ) {
+			p->setPen( interpolate( colorGroup().light(), colorGroup().highlight(), float( -i )/contentsRect().width() ) );
+			p->drawLine( this->frameWidth() + i, contentsRect().top(), this->frameWidth() + i, contentsRect().bottom() );
+		}
+		p->setPen( colorGroup().dark() );
+		p->drawLine( this->frameWidth() + int( w ), contentsRect().top(), this->frameWidth() + int( w ), contentsRect().bottom() );
+	}
+}
+
+void KVolumeFader_Widget::mousePressEvent( QMouseEvent* ){
+	//kdDebug() << k_funcinfo << endl;
+}
+
+void KVolumeFader_Widget::mouseReleaseEvent( QMouseEvent* qme ){
+	bool setValue = false;
+	if ( KGlobalSettings::mouseSettings().handed == 0 && qme->button() == Qt::LeftButton ) setValue=true;
+	if ( KGlobalSettings::mouseSettings().handed == 1 && qme->button() == Qt::RightButton ) setValue=true;
+	if ( setValue )
+	{
+		switch ( _dir ) {
+			default:
+			case Arts::BottomToTop:
+				if ( _impl ) _impl->normalizedvolume( 1 - float( qme->y() ) / contentsRect().height() );
+				break;
+			case Arts::TopToBottom:
+				if ( _impl ) _impl->normalizedvolume( float( qme->y() ) / contentsRect().height() );
+				break;
+			case Arts::LeftToRight:
+				if ( _impl ) _impl->normalizedvolume( float( qme->x() ) / contentsRect().width() );
+				break;
+			case Arts::RightToLeft:
+				if ( _impl ) _impl->normalizedvolume( 1 - float( qme->x() ) / contentsRect().width() );
+				break;
+		}
+	} else _menu->exec( qme->globalPos() );
+}
+
+void KVolumeFader_Widget::mouseMoveEvent( QMouseEvent* qme ){
+	switch ( _dir ) {
+		default:
+		case Arts::BottomToTop:
+			if ( _impl ) _impl->normalizedvolume( 1 - float( qme->y() ) / contentsRect().height() );
+			break;
+		case Arts::TopToBottom:
+			if ( _impl ) _impl->normalizedvolume( float( qme->y() ) / contentsRect().height() );
+			break;
+		case Arts::LeftToRight:
+			if ( _impl ) _impl->normalizedvolume( float( qme->x() ) / contentsRect().width() );
+			break;
+		case Arts::RightToLeft:
+			if ( _impl ) _impl->normalizedvolume( 1 - float( qme->x() ) / contentsRect().width() );
+			break;
+	}
+}
+
+void KVolumeFader_Widget::wheelEvent( QWheelEvent* qwe ){
+	//kdDebug() << k_funcinfo << endl;
+	if ( qwe->delta() < 0 ) { if ( _impl ) _impl->normalizedvolume( _impl->dbtondb( _impl->dbvolume() - 1 ) ); }
+	if ( qwe->delta() > 0 ) { if ( _impl ) _impl->normalizedvolume( _impl->dbtondb( _impl->dbvolume() + 1 ) ); }
+}
+
+void KVolumeFader_Widget::exactValue() {
+	//kdDebug() << k_funcinfo << endl;
+	bool ok=false;
+	double n = KInputDialog::getDouble( i18n( "Set Exact Volume Value" ), i18n( "Exact volume (dB):" ), _impl->dbvolume(), _impl->dbmin(), _impl->dbmax(), 1, &ok, this );
+	if ( ok ) _impl->dbvolume( n );
+}
+
+REGISTER_IMPLEMENTATION( KVolumeFader_impl );
+
+#include "kvolumefader_impl.moc"
+// vim: sw=4 ts=4