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Diffstat (limited to 'chalk/core/kis_autogradient_resource.cpp')
| -rw-r--r-- | chalk/core/kis_autogradient_resource.cpp | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/chalk/core/kis_autogradient_resource.cpp b/chalk/core/kis_autogradient_resource.cpp new file mode 100644 index 00000000..aaac54ef --- /dev/null +++ b/chalk/core/kis_autogradient_resource.cpp @@ -0,0 +1,221 @@ +/* + * 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.cpp, 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 ) ); +} |