diff options
Diffstat (limited to 'kview/modules/effects/kvieweffects.cpp')
| -rw-r--r-- | kview/modules/effects/kvieweffects.cpp | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/kview/modules/effects/kvieweffects.cpp b/kview/modules/effects/kvieweffects.cpp new file mode 100644 index 00000000..9295c876 --- /dev/null +++ b/kview/modules/effects/kvieweffects.cpp @@ -0,0 +1,244 @@ +/* This file is in the public domain */ + +// $Id$ + +#include "kvieweffects.h" + +#include <qobjectlist.h> + +#include <kaction.h> +#include <klocale.h> +#include <kgenericfactory.h> +#include <kdebug.h> +#include <kimageviewer/viewer.h> +#include <kimageviewer/canvas.h> +#include <kdialogbase.h> +#include <knuminput.h> +#include <kiconeffect.h> +#include <qvbox.h> +#include <kcolorbutton.h> +#include <kimageeffect.h> +#include <qlabel.h> +#include <assert.h> + +typedef KGenericFactory<KViewEffects> KViewEffectsFactory; +K_EXPORT_COMPONENT_FACTORY( kview_effectsplugin, KViewEffectsFactory( "kvieweffectsplugin" ) ) + +KViewEffects::KViewEffects( QObject* parent, const char* name, const QStringList & ) + : Plugin( parent, name ) + , m_gamma( 0.5 ), m_lastgamma( -1.0 ) + , m_opacity( 50 ), m_lastopacity( -1 ) + , m_intensity( 50 ), m_lastintensity( -1 ) + , m_color( white ) + , m_image( 0 ) +{ + QObjectList * viewerList = parent->queryList( 0, "KImageViewer Part", false, false ); + m_pViewer = static_cast<KImageViewer::Viewer *>( viewerList->getFirst() ); + delete viewerList; + if( m_pViewer ) + { + KAction * gammaaction = new KAction( i18n( "&Gamma Correction..." ), 0, 0, + this, SLOT( gamma() ), + actionCollection(), "plugin_effects_gamma" ); + KAction * blendaction = new KAction( i18n( "&Blend Color..." ), 0, 0, + this, SLOT( blend() ), + actionCollection(), "plugin_effects_blend" ); + KAction * intensityaction = new KAction( i18n( "Change &Intensity (Brightness)..." ), 0, 0, + this, SLOT( intensity() ), + actionCollection(), "plugin_effects_intensity" ); + gammaaction->setEnabled( m_pViewer->canvas()->image() != 0 ); + blendaction->setEnabled( m_pViewer->canvas()->image() != 0 ); + intensityaction->setEnabled( m_pViewer->canvas()->image() != 0 ); + connect( m_pViewer->widget(), SIGNAL( hasImage( bool ) ), gammaaction, SLOT( setEnabled( bool ) ) ); + connect( m_pViewer->widget(), SIGNAL( hasImage( bool ) ), blendaction, SLOT( setEnabled( bool ) ) ); + connect( m_pViewer->widget(), SIGNAL( hasImage( bool ) ), intensityaction, SLOT( setEnabled( bool ) ) ); + } + else + kdWarning( 4630 ) << "no KImageViewer interface found - the effects plugin won't work" << endl; +} + +KViewEffects::~KViewEffects() +{ + // no need to delete m_image here since it will always be NULL at this + // point. + assert( m_image == 0 ); +} + +void KViewEffects::intensity() +{ + KDialogBase dlg( m_pViewer->widget(), "Intensity Dialog", true /*modal*/, i18n( "Change Intensity" ), KDialogBase::Ok | KDialogBase::Try | KDialogBase::Cancel ); + connect( &dlg, SIGNAL( tryClicked() ), this, SLOT( applyIntensity() ) ); + + QVBox * vbox = new QVBox( &dlg ); + vbox->setSpacing( KDialog::spacingHint() ); + dlg.setMainWidget( vbox ); + KIntNumInput * percent = new KIntNumInput( vbox, "Intensity Input" ); + percent->setRange( 0, 100, 1, true ); + percent->setValue( m_intensity ); + percent->setLabel( i18n( "&Intensity:" ) ); + percent->setSuffix( QString::fromAscii( "%" ) ); + connect( percent, SIGNAL( valueChanged( int ) ), this, SLOT( setIntensity( int ) ) ); + + int result = dlg.exec(); + if( result == QDialog::Accepted ) + { + applyIntensity(); + m_pViewer->setModified( true ); + } + else + if( m_image ) + m_pViewer->canvas()->setImage( *m_image ); + m_lastintensity = -1; + delete m_image; + m_image = 0; +} + +void KViewEffects::setIntensity( int intensity ) +{ + m_intensity = intensity; +} + +void KViewEffects::applyIntensity() +{ + kdDebug( 4630 ) << k_funcinfo << endl; + if( m_intensity == m_lastintensity ) + return; // nothing to do + + QImage * work = workImage(); + if( work ) + { + KImageEffect::intensity( *work, m_intensity * 0.01 ); + m_pViewer->canvas()->setImage( *work ); + delete work; + m_lastintensity = m_intensity; + } +} + +void KViewEffects::blend() +{ + KDialogBase dlg( m_pViewer->widget(), "Blend Color Dialog", true /*modal*/, i18n( "Blend Color" ), KDialogBase::Ok | KDialogBase::Try | KDialogBase::Cancel ); + connect( &dlg, SIGNAL( tryClicked() ), this, SLOT( applyBlend() ) ); + + QVBox * vbox = new QVBox( &dlg ); + vbox->setSpacing( KDialog::spacingHint() ); + dlg.setMainWidget( vbox ); + KIntNumInput * opacity = new KIntNumInput( vbox, "Opacity Input" ); + opacity->setRange( 0, 100, 1, true ); + opacity->setValue( m_opacity ); + opacity->setLabel( i18n( "O&pacity:" ) ); + opacity->setSuffix( QString::fromAscii( "%" ) ); + connect( opacity, SIGNAL( valueChanged( int ) ), this, SLOT( setOpacity( int ) ) ); + QLabel * label = new QLabel( i18n( "Blend c&olor:" ), vbox ); + KColorButton * color = new KColorButton( m_color, vbox, "Color Input Button" ); + label->setBuddy( color ); + connect( color, SIGNAL( changed( const QColor & ) ), this, SLOT( setColor( const QColor & ) ) ); + + int result = dlg.exec(); + if( result == QDialog::Accepted ) + { + applyBlend(); + m_pViewer->setModified( true ); + } + else + if( m_image ) + m_pViewer->canvas()->setImage( *m_image ); + m_lastopacity = -1; + delete m_image; + m_image = 0; +} + +void KViewEffects::setOpacity( int opacity ) +{ + m_opacity = opacity; +} + +void KViewEffects::setColor( const QColor & color ) +{ + m_color = color; +} + +void KViewEffects::applyBlend() +{ + if( m_opacity == m_lastopacity ) + return; // nothing to do + + QImage * work = workImage(); + if( work ) + { + KImageEffect::blend( m_color, *work, m_opacity * 0.01 ); + m_pViewer->canvas()->setImage( *work ); + delete work; + m_lastopacity = m_opacity; + } +} + +void KViewEffects::gamma() +{ + KDialogBase dlg( m_pViewer->widget(), "Gamma Correction Dialog", true /*modal*/, i18n( "Gamma Correction" ), KDialogBase::Ok | KDialogBase::Try | KDialogBase::Cancel ); + connect( &dlg, SIGNAL( tryClicked() ), this, SLOT( applyGammaCorrection() ) ); + + // create dialog + KDoubleNumInput * gammavalue = new KDoubleNumInput( 0.0, 1.0, 0.5, 0.01, 4, &dlg, "Gamma value input" ); + gammavalue->setRange( 0.0, 1.0, 0.01, true ); + connect( gammavalue, SIGNAL( valueChanged( double ) ), this, SLOT( setGammaValue( double ) ) ); + gammavalue->setLabel( i18n( "Gamma value:" ) ); + dlg.setMainWidget( gammavalue ); + + int result = dlg.exec(); + if( result == QDialog::Accepted ) + { + // apply gamma correction + applyGammaCorrection(); + m_pViewer->setModified( true ); + } + else + { + if( m_image ) + m_pViewer->canvas()->setImage( *m_image ); + } + m_lastgamma = -1; + delete m_image; + m_image = 0; +} + +void KViewEffects::setGammaValue( double gamma ) +{ + m_gamma = gamma; + kdDebug( 4630 ) << "m_gamma = " << m_gamma << endl; + // TODO: show effect on the fly if requested +} + +void KViewEffects::applyGammaCorrection() +{ + if( m_gamma == m_lastgamma ) + return; // nothing to do + + QImage * corrected = workImage(); + if( corrected ) + { + KIconEffect::toGamma( *corrected, m_gamma ); + m_pViewer->canvas()->setImage( *corrected ); + delete corrected; + m_lastgamma = m_gamma; + } +} + +inline QImage * KViewEffects::workImage() +{ + if( ! m_image ) + { + const QImage * canvasimage = m_pViewer->canvas()->image(); + if( canvasimage ) + m_image = new QImage( *canvasimage ); + } + if( m_image ) + { + QImage * changed = new QImage( *m_image ); + changed->detach(); + return changed; + } + return 0; +} + +// vim:sw=4:ts=4:cindent +#include "kvieweffects.moc" |