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244 lines
8.1 KiB
244 lines
8.1 KiB
/*
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Copyright ( C ) 2003 Arnold Krille <arnold@arnoldarts.de>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation;
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version 2 of the License.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "kvolumefader_impl.h"
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#include <kdebug.h>
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#include <tqpainter.h>
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#include <tqstyle.h>
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#include <tqfont.h>
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#include <tqfontmetrics.h>
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#include <kglobalsettings.h>
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#include <klocale.h>
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#include <kpopupmenu.h>
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#include <kaction.h>
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#include <kinputdialog.h>
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KVolumeFader_impl::KVolumeFader_impl( TQFrame* w )
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: Arts::KFrame_impl( w ? w : new KVolumeFader_Widget( 0 ) )
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, dB2VolCalc( -36, 6 )
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, _dir( Arts::BottomToTop )
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, dbmin_inupdate( false )
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, dbmax_inupdate( false )
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, direction_inupdate( false )
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, ignoreUpdates( 0 )
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{
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//kdDebug()<<"KVolumeFader_impl::KVolumeFader_impl( TQFrame* w="<<w<<" )"<<endl;
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_vfwidget = static_cast<KVolumeFader_Widget*>( _qwidget );
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_vfwidget->setImpl( this );
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}
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KVolumeFader_impl::~KVolumeFader_impl() {
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}
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float KVolumeFader_impl::dbmin() { return dB2VolCalc::dbmin; }
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void KVolumeFader_impl::dbmin( float n ) {
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if ( n != dB2VolCalc::dbmin && !dbmin_inupdate ) {
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dbmin_inupdate = true;
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dB2VolCalc::dbmin = n;
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dbmin_changed( dbmin() );
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dbmin_inupdate = false;
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}
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}
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float KVolumeFader_impl::dbmax() { return dB2VolCalc::dbmax; }
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void KVolumeFader_impl::dbmax( float n ) {
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if ( n != dB2VolCalc::dbmax && !dbmax_inupdate ) {
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dbmax_inupdate = true;
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dB2VolCalc::dbmax = n;
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dbmax_changed( dbmax() );
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dbmax_inupdate = false;
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}
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}
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Arts::Direction KVolumeFader_impl::direction() { return _dir; }
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void KVolumeFader_impl::direction( Arts::Direction n ) {
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if ( n != _dir && !direction_inupdate ) {
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direction_inupdate = true;
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_dir = n;
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_vfwidget->setDirection( _dir );
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// direction_changed( direction() );
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direction_inupdate = false;
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}
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}
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float KVolumeFader_impl::volume() { return _volume; }
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void KVolumeFader_impl::volume( float n ) {
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//kdDebug() << k_funcinfo << n << " ignore: " << ignoreUpdates << endl;
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if ( ignoreUpdates > 0 ) {
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--ignoreUpdates;
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return;
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}
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_volume = n;
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_vfwidget->setValue( amptondb( _volume ) );
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}
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float KVolumeFader_impl::dbvolume() { return amptodb( _volume ); }
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void KVolumeFader_impl::dbvolume( float n ) {
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//kdDebug() << k_funcinfo << n << endl;
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normalizedvolume( dbtondb( n ) );
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}
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void KVolumeFader_impl::normalizedvolume( float n ) {
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if ( ( ndbtodb( n ) > dbmin() ) && ( ndbtodb( n ) < dbmax() ) ) {
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float amp = ndbtoamp( n );
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if ( amp != _volume ) {
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++ignoreUpdates;
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//kdDebug() << k_funcinfo << ignoreUpdates << endl;
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_volume = amp;
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_vfwidget->setValue( n );
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volume_changed( _volume );
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}
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}
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}
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void KVolumeFader_impl::constructor( float dbmin, float dbmax, Arts::Direction dir ) {
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this->dbmin( dbmin ); this->dbmax( dbmax ); direction( dir );
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}
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KVolumeFader_Widget::KVolumeFader_Widget( TQWidget* p, const char* n )
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: TQFrame( p,n )
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, _impl( 0 )
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, _inupdate( false )
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, _value( -1 )
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, _dir( Arts::BottomToTop )
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, _menu( new KPopupMenu( this ) )
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, _aExactValue( new KAction( i18n( "Set Exact Value..." ), KShortcut(), TQT_TQOBJECT(this), TQT_SLOT( exactValue() ), TQT_TQOBJECT(this) ) )
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{
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//kdDebug() << k_funcinfo << endl;
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setMinimumSize( 10,10 );
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_aExactValue->plug( _menu );
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}
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void KVolumeFader_Widget::setImpl( KVolumeFader_impl* n ) { _impl = n; update(); }
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KVolumeFader_Widget::~KVolumeFader_Widget() {
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//kdDebug() << k_funcinfo << endl;
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}
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void KVolumeFader_Widget::setDirection( Arts::Direction n ) { _dir = n; update(); }
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void KVolumeFader_Widget::setValue( float n ) {
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//kdDebug() << k_funcinfo << n << endl;
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if ( n != _value ) {
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_value = n;
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update();
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}
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}
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TQColor KVolumeFader_Widget::interpolate( TQColor low, TQColor high, float percent ) {
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if ( percent<=0 ) return low; else
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if ( percent>=1 ) return high; else
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return TQColor(
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int( low.red() + ( high.red()-low.red() ) * percent ),
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int( low.green() + ( high.green()-low.green() ) * percent ),
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int( low.blue() + ( high.blue()-low.blue() ) * percent ) );
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}
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void KVolumeFader_Widget::drawContents( TQPainter* p ){
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if ( _dir==Arts::BottomToTop || _dir==Arts::BottomToTop ) {
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float h;
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if ( _dir==Arts::BottomToTop ) h = contentsRect().height() * ( 1 - _value );
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else h = contentsRect().height() * _value;
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for ( int i=int( h ); i<contentsRect().height(); i++ ) {
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p->setPen( interpolate( tqcolorGroup().light(), tqcolorGroup().highlight(), float( i )/contentsRect().height() ) );
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p->drawLine( contentsRect().left(), this->frameWidth() + i, contentsRect().right(), this->frameWidth() + i );
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}
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p->setPen( tqcolorGroup().dark() );
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p->drawLine( contentsRect().left(), this->frameWidth() + int( h ), contentsRect().right(), this->frameWidth() + int( h ) );
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} else {
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float w;
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p->translate( this->width(),0 );
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if ( _dir==Arts::LeftToRight ) w = - contentsRect().width() * ( 1 - _value );
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else w = - contentsRect().width() * _value;
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for ( int i=int( w ); i>=-contentsRect().width(); i-- ) {
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p->setPen( interpolate( tqcolorGroup().light(), tqcolorGroup().highlight(), float( -i )/contentsRect().width() ) );
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p->drawLine( this->frameWidth() + i, contentsRect().top(), this->frameWidth() + i, contentsRect().bottom() );
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}
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p->setPen( tqcolorGroup().dark() );
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p->drawLine( this->frameWidth() + int( w ), contentsRect().top(), this->frameWidth() + int( w ), contentsRect().bottom() );
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}
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}
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void KVolumeFader_Widget::mousePressEvent( TQMouseEvent* ){
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//kdDebug() << k_funcinfo << endl;
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}
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void KVolumeFader_Widget::mouseReleaseEvent( TQMouseEvent* qme ){
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bool setValue = false;
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if ( KGlobalSettings::mouseSettings().handed == 0 && qme->button() == Qt::LeftButton ) setValue=true;
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if ( KGlobalSettings::mouseSettings().handed == 1 && qme->button() == Qt::RightButton ) setValue=true;
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if ( setValue )
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{
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switch ( _dir ) {
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default:
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case Arts::BottomToTop:
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if ( _impl ) _impl->normalizedvolume( 1 - float( qme->y() ) / contentsRect().height() );
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break;
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case Arts::TopToBottom:
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if ( _impl ) _impl->normalizedvolume( float( qme->y() ) / contentsRect().height() );
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break;
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case Arts::LeftToRight:
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if ( _impl ) _impl->normalizedvolume( float( qme->x() ) / contentsRect().width() );
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break;
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case Arts::RightToLeft:
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if ( _impl ) _impl->normalizedvolume( 1 - float( qme->x() ) / contentsRect().width() );
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break;
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}
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} else _menu->exec( qme->globalPos() );
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}
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void KVolumeFader_Widget::mouseMoveEvent( TQMouseEvent* qme ){
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switch ( _dir ) {
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default:
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case Arts::BottomToTop:
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if ( _impl ) _impl->normalizedvolume( 1 - float( qme->y() ) / contentsRect().height() );
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break;
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case Arts::TopToBottom:
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if ( _impl ) _impl->normalizedvolume( float( qme->y() ) / contentsRect().height() );
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break;
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case Arts::LeftToRight:
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if ( _impl ) _impl->normalizedvolume( float( qme->x() ) / contentsRect().width() );
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break;
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case Arts::RightToLeft:
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if ( _impl ) _impl->normalizedvolume( 1 - float( qme->x() ) / contentsRect().width() );
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break;
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}
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}
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void KVolumeFader_Widget::wheelEvent( TQWheelEvent* qwe ){
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//kdDebug() << k_funcinfo << endl;
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if ( qwe->delta() < 0 ) { if ( _impl ) _impl->normalizedvolume( _impl->dbtondb( _impl->dbvolume() - 1 ) ); }
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if ( qwe->delta() > 0 ) { if ( _impl ) _impl->normalizedvolume( _impl->dbtondb( _impl->dbvolume() + 1 ) ); }
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}
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void KVolumeFader_Widget::exactValue() {
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//kdDebug() << k_funcinfo << endl;
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bool ok=false;
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double n = KInputDialog::getDouble( i18n( "Set Exact Volume Value" ), i18n( "Exact volume (dB):" ), _impl->dbvolume(), _impl->dbmin(), _impl->dbmax(), 1, &ok, this );
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if ( ok ) _impl->dbvolume( n );
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}
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REGISTER_IMPLEMENTATION( KVolumeFader_impl );
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#include "kvolumefader_impl.moc"
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// vim: sw=4 ts=4
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