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245 lines
6.9 KiB
245 lines
6.9 KiB
15 years ago
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/* This file is in the public domain */
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// $Id$
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#include "kvieweffects.h"
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#include <qobjectlist.h>
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#include <kaction.h>
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#include <klocale.h>
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#include <kgenericfactory.h>
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#include <kdebug.h>
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#include <kimageviewer/viewer.h>
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#include <kimageviewer/canvas.h>
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#include <kdialogbase.h>
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#include <knuminput.h>
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#include <kiconeffect.h>
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#include <qvbox.h>
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#include <kcolorbutton.h>
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#include <kimageeffect.h>
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#include <qlabel.h>
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#include <assert.h>
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typedef KGenericFactory<KViewEffects> KViewEffectsFactory;
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K_EXPORT_COMPONENT_FACTORY( kview_effectsplugin, KViewEffectsFactory( "kvieweffectsplugin" ) )
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KViewEffects::KViewEffects( QObject* parent, const char* name, const QStringList & )
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: Plugin( parent, name )
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, m_gamma( 0.5 ), m_lastgamma( -1.0 )
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, m_opacity( 50 ), m_lastopacity( -1 )
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, m_intensity( 50 ), m_lastintensity( -1 )
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, m_color( white )
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, m_image( 0 )
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{
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QObjectList * viewerList = parent->queryList( 0, "KImageViewer Part", false, false );
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m_pViewer = static_cast<KImageViewer::Viewer *>( viewerList->getFirst() );
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delete viewerList;
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if( m_pViewer )
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{
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KAction * gammaaction = new KAction( i18n( "&Gamma Correction..." ), 0, 0,
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this, SLOT( gamma() ),
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actionCollection(), "plugin_effects_gamma" );
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KAction * blendaction = new KAction( i18n( "&Blend Color..." ), 0, 0,
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this, SLOT( blend() ),
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actionCollection(), "plugin_effects_blend" );
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KAction * intensityaction = new KAction( i18n( "Change &Intensity (Brightness)..." ), 0, 0,
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this, SLOT( intensity() ),
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actionCollection(), "plugin_effects_intensity" );
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gammaaction->setEnabled( m_pViewer->canvas()->image() != 0 );
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blendaction->setEnabled( m_pViewer->canvas()->image() != 0 );
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intensityaction->setEnabled( m_pViewer->canvas()->image() != 0 );
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connect( m_pViewer->widget(), SIGNAL( hasImage( bool ) ), gammaaction, SLOT( setEnabled( bool ) ) );
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connect( m_pViewer->widget(), SIGNAL( hasImage( bool ) ), blendaction, SLOT( setEnabled( bool ) ) );
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connect( m_pViewer->widget(), SIGNAL( hasImage( bool ) ), intensityaction, SLOT( setEnabled( bool ) ) );
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}
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else
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kdWarning( 4630 ) << "no KImageViewer interface found - the effects plugin won't work" << endl;
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}
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KViewEffects::~KViewEffects()
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{
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// no need to delete m_image here since it will always be NULL at this
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// point.
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assert( m_image == 0 );
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}
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void KViewEffects::intensity()
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{
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KDialogBase dlg( m_pViewer->widget(), "Intensity Dialog", true /*modal*/, i18n( "Change Intensity" ), KDialogBase::Ok | KDialogBase::Try | KDialogBase::Cancel );
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connect( &dlg, SIGNAL( tryClicked() ), this, SLOT( applyIntensity() ) );
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QVBox * vbox = new QVBox( &dlg );
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vbox->setSpacing( KDialog::spacingHint() );
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dlg.setMainWidget( vbox );
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KIntNumInput * percent = new KIntNumInput( vbox, "Intensity Input" );
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percent->setRange( 0, 100, 1, true );
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percent->setValue( m_intensity );
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percent->setLabel( i18n( "&Intensity:" ) );
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percent->setSuffix( QString::fromAscii( "%" ) );
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connect( percent, SIGNAL( valueChanged( int ) ), this, SLOT( setIntensity( int ) ) );
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int result = dlg.exec();
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if( result == QDialog::Accepted )
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{
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applyIntensity();
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m_pViewer->setModified( true );
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}
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else
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if( m_image )
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m_pViewer->canvas()->setImage( *m_image );
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m_lastintensity = -1;
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delete m_image;
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m_image = 0;
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}
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void KViewEffects::setIntensity( int intensity )
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{
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m_intensity = intensity;
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}
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void KViewEffects::applyIntensity()
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{
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kdDebug( 4630 ) << k_funcinfo << endl;
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if( m_intensity == m_lastintensity )
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return; // nothing to do
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QImage * work = workImage();
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if( work )
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{
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KImageEffect::intensity( *work, m_intensity * 0.01 );
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m_pViewer->canvas()->setImage( *work );
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delete work;
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m_lastintensity = m_intensity;
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}
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}
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void KViewEffects::blend()
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{
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KDialogBase dlg( m_pViewer->widget(), "Blend Color Dialog", true /*modal*/, i18n( "Blend Color" ), KDialogBase::Ok | KDialogBase::Try | KDialogBase::Cancel );
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connect( &dlg, SIGNAL( tryClicked() ), this, SLOT( applyBlend() ) );
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QVBox * vbox = new QVBox( &dlg );
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vbox->setSpacing( KDialog::spacingHint() );
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dlg.setMainWidget( vbox );
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KIntNumInput * opacity = new KIntNumInput( vbox, "Opacity Input" );
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opacity->setRange( 0, 100, 1, true );
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opacity->setValue( m_opacity );
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opacity->setLabel( i18n( "O&pacity:" ) );
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opacity->setSuffix( QString::fromAscii( "%" ) );
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connect( opacity, SIGNAL( valueChanged( int ) ), this, SLOT( setOpacity( int ) ) );
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QLabel * label = new QLabel( i18n( "Blend c&olor:" ), vbox );
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KColorButton * color = new KColorButton( m_color, vbox, "Color Input Button" );
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label->setBuddy( color );
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connect( color, SIGNAL( changed( const QColor & ) ), this, SLOT( setColor( const QColor & ) ) );
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int result = dlg.exec();
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if( result == QDialog::Accepted )
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{
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applyBlend();
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m_pViewer->setModified( true );
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}
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else
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if( m_image )
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m_pViewer->canvas()->setImage( *m_image );
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m_lastopacity = -1;
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delete m_image;
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m_image = 0;
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}
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void KViewEffects::setOpacity( int opacity )
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{
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m_opacity = opacity;
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}
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void KViewEffects::setColor( const QColor & color )
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{
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m_color = color;
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}
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void KViewEffects::applyBlend()
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{
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if( m_opacity == m_lastopacity )
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return; // nothing to do
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QImage * work = workImage();
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if( work )
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{
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KImageEffect::blend( m_color, *work, m_opacity * 0.01 );
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m_pViewer->canvas()->setImage( *work );
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delete work;
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m_lastopacity = m_opacity;
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}
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}
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void KViewEffects::gamma()
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{
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KDialogBase dlg( m_pViewer->widget(), "Gamma Correction Dialog", true /*modal*/, i18n( "Gamma Correction" ), KDialogBase::Ok | KDialogBase::Try | KDialogBase::Cancel );
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connect( &dlg, SIGNAL( tryClicked() ), this, SLOT( applyGammaCorrection() ) );
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// create dialog
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KDoubleNumInput * gammavalue = new KDoubleNumInput( 0.0, 1.0, 0.5, 0.01, 4, &dlg, "Gamma value input" );
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gammavalue->setRange( 0.0, 1.0, 0.01, true );
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connect( gammavalue, SIGNAL( valueChanged( double ) ), this, SLOT( setGammaValue( double ) ) );
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gammavalue->setLabel( i18n( "Gamma value:" ) );
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dlg.setMainWidget( gammavalue );
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int result = dlg.exec();
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if( result == QDialog::Accepted )
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{
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// apply gamma correction
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applyGammaCorrection();
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m_pViewer->setModified( true );
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}
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else
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{
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if( m_image )
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m_pViewer->canvas()->setImage( *m_image );
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}
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m_lastgamma = -1;
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delete m_image;
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m_image = 0;
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}
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void KViewEffects::setGammaValue( double gamma )
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{
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m_gamma = gamma;
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kdDebug( 4630 ) << "m_gamma = " << m_gamma << endl;
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// TODO: show effect on the fly if requested
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}
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void KViewEffects::applyGammaCorrection()
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{
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if( m_gamma == m_lastgamma )
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return; // nothing to do
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QImage * corrected = workImage();
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if( corrected )
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{
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KIconEffect::toGamma( *corrected, m_gamma );
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m_pViewer->canvas()->setImage( *corrected );
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delete corrected;
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m_lastgamma = m_gamma;
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}
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}
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inline QImage * KViewEffects::workImage()
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{
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if( ! m_image )
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{
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const QImage * canvasimage = m_pViewer->canvas()->image();
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if( canvasimage )
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m_image = new QImage( *canvasimage );
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}
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if( m_image )
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{
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QImage * changed = new QImage( *m_image );
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changed->detach();
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return changed;
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}
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return 0;
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}
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// vim:sw=4:ts=4:cindent
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#include "kvieweffects.moc"
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