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/* This file is in the public domain */
// $Id: kvieweffects.cpp 239366 2003-07-27 00:25:16Z mueller $
#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"
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