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/*
* Copyright (c) 2004 Cyrille Berger <cberger@cberger.net>
* 2004 Sven Langkamp <longamp@reallygood.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "kis_gradient.h"
#include "kis_autogradient_resource.h"
// FIXME: use the same #define as in kis_gradient.cc, probably best customizable?
#define PREVIEW_WIDTH 64
#define PREVIEW_HEIGHT 64
void KisAutogradientResource::createSegment( int interpolation, int colorInterpolation, double startOffset, double endOffset, double middleOffset, TQColor left, TQColor right )
{
pushSegment(new KisGradientSegment(interpolation, colorInterpolation, startOffset, middleOffset, endOffset, Color( left, 1 ), Color( right, 1 )));
}
const TQValueVector<double> KisAutogradientResource::getHandlePositions() const
{
TQValueVector<double> handlePositions;
handlePositions.push_back(m_segments[0]->startOffset());
for (uint i = 0; i < m_segments.count(); i++)
{
handlePositions.push_back(m_segments[i]->endOffset());
}
return handlePositions;
}
const TQValueVector<double> KisAutogradientResource::getMiddleHandlePositions() const
{
TQValueVector<double> middleHandlePositions;
for (uint i = 0; i < m_segments.count(); i++)
{
middleHandlePositions.push_back(m_segments[i]->middleOffset());
}
return middleHandlePositions;
}
void KisAutogradientResource::moveSegmentStartOffset( KisGradientSegment* segment, double t)
{
TQValueVector<KisGradientSegment*>::iterator it = tqFind( m_segments.begin(), m_segments.end(), segment );
if ( it != m_segments.end() )
{
if ( it == m_segments.begin() )
{
segment->setStartOffset( 0.0 );
return;
}
KisGradientSegment* previousSegment = (*(it-1));
if ( t > segment->startOffset() )
{
if( t > segment->middleOffset() )
t = segment->middleOffset();
}
else {
if( t < previousSegment->middleOffset() )
t = previousSegment->middleOffset();
}
previousSegment->setEndOffset( t );
segment->setStartOffset( t );
}
}
void KisAutogradientResource::moveSegmentEndOffset( KisGradientSegment* segment, double t)
{
TQValueVector<KisGradientSegment*>::iterator it = tqFind( m_segments.begin(), m_segments.end(), segment );
if ( it != m_segments.end() )
{
if ( it+1 == m_segments.end() )
{
segment->setEndOffset( 1.0 );
return;
}
KisGradientSegment* followingSegment = (*(it+1));
if ( t < segment->endOffset() )
{
if( t < segment->middleOffset() )
t = segment->middleOffset();
}
else {
if( t > followingSegment->middleOffset() )
t = followingSegment->middleOffset();
}
followingSegment->setStartOffset( t );
segment->setEndOffset( t );
}
}
void KisAutogradientResource::moveSegmentMiddleOffset( KisGradientSegment* segment, double t)
{
if( segment )
{
if( t > segment->endOffset() )
segment->setMiddleOffset( segment->endOffset() );
else if( t < segment->startOffset() )
segment->setMiddleOffset( segment->startOffset() );
else
segment->setMiddleOffset( t );
}
}
void KisAutogradientResource::splitSegment( KisGradientSegment* segment )
{
Q_ASSERT(segment != 0);
TQValueVector<KisGradientSegment*>::iterator it = tqFind( m_segments.begin(), m_segments.end(), segment );
if ( it != m_segments.end() )
{
KisGradientSegment* newSegment = new KisGradientSegment(
segment->interpolation(), segment->colorInterpolation(),
segment ->startOffset(),
( segment->middleOffset() - segment->startOffset() ) / 2 + segment->startOffset(),
segment->middleOffset(),
segment->startColor(),
segment->colorAt( segment->middleOffset() ) );
m_segments.insert( it, newSegment );
segment->setStartColor( segment->colorAt( segment->middleOffset() ) );
segment->setStartOffset( segment->middleOffset() );
segment->setMiddleOffset( ( segment->endOffset() - segment->startOffset() ) / 2 + segment->startOffset() );
}
}
void KisAutogradientResource::duplicateSegment( KisGradientSegment* segment )
{
Q_ASSERT(segment != 0);
TQValueVector<KisGradientSegment*>::iterator it = tqFind( m_segments.begin(), m_segments.end(), segment );
if ( it != m_segments.end() )
{
double middlePostionPercentage = ( segment->middleOffset() - segment->startOffset() ) / segment->length();
double center = segment->startOffset() + segment->length() / 2;
KisGradientSegment* newSegment = new KisGradientSegment(
segment->interpolation(), segment->colorInterpolation(),
segment ->startOffset(),
segment->length() / 2 * middlePostionPercentage + segment->startOffset(),
center, segment->startColor(),
segment->endColor() );
m_segments.insert( it, newSegment );
segment->setStartOffset( center );
segment->setMiddleOffset( segment->length() * middlePostionPercentage + segment->startOffset() );
}
}
void KisAutogradientResource::mirrorSegment( KisGradientSegment* segment )
{
Q_ASSERT(segment != 0);
Color tmpColor = segment->startColor();
segment->setStartColor( segment->endColor() );
segment->setEndColor( tmpColor );
segment->setMiddleOffset( segment->endOffset() - ( segment->middleOffset() - segment->startOffset() ) );
if( segment->interpolation() == INTERP_SPHERE_INCREASING )
segment->setInterpolation( INTERP_SPHERE_DECREASING );
else if( segment->interpolation() == INTERP_SPHERE_DECREASING )
segment->setInterpolation( INTERP_SPHERE_INCREASING );
if( segment->colorInterpolation() == COLOR_INTERP_HSV_CW )
segment->setColorInterpolation( COLOR_INTERP_HSV_CCW );
else if( segment->colorInterpolation() == COLOR_INTERP_HSV_CCW )
segment->setColorInterpolation( COLOR_INTERP_HSV_CW );
}
KisGradientSegment* KisAutogradientResource::removeSegment( KisGradientSegment* segment )
{
Q_ASSERT(segment != 0);
if( m_segments.count() < 2 )
return 0;
TQValueVector<KisGradientSegment*>::iterator it = tqFind( m_segments.begin(), m_segments.end(), segment );
if ( it != m_segments.end() )
{
double middlePostionPercentage;
KisGradientSegment* nextSegment;
if( it == m_segments.begin() )
{
nextSegment = (*(it+1));
middlePostionPercentage = ( nextSegment->middleOffset() - nextSegment->startOffset() ) / nextSegment->length();
nextSegment->setStartOffset( segment->startOffset() );
nextSegment->setMiddleOffset( middlePostionPercentage * nextSegment->length() + nextSegment->startOffset() );
}
else
{
nextSegment = (*(it-1));
middlePostionPercentage = ( nextSegment->middleOffset() - nextSegment->startOffset() ) / nextSegment->length();
nextSegment->setEndOffset( segment->endOffset() );
nextSegment->setMiddleOffset( middlePostionPercentage * nextSegment->length() + nextSegment->startOffset() );
}
delete segment;
m_segments.erase( it );
return nextSegment;
}
return 0;
}
bool KisAutogradientResource::removeSegmentPossible() const
{
if( m_segments.count() < 2 )
return false;
return true;
}
void KisAutogradientResource::updatePreview()
{
setImage( generatePreview( PREVIEW_WIDTH, PREVIEW_HEIGHT ) );
}
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