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96 lines
3.3 KiB
96 lines
3.3 KiB
/*
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* Copyright (c) 2005 Cyrille Berger <cberger@cberger.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef KIS_CONVOLUTION_PAINTER_H_
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#define KIS_CONVOLUTION_PAINTER_H_
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#include <tqimage.h>
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#include "ksharedptr.h"
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#include "kis_types.h"
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#include "kis_painter.h"
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#include "koffice_export.h"
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enum KisConvolutionBorderOp {
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BORDER_DEFAULT_FILL = 0, // Use the default pixel to make up for the missing pixels on the border or the pixel that lies beyond
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// the rect we are convolving.
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BORDER_WRAP = 1, // Use the pixel on the opposite side to make up for the missing pixels on the border. XXX: Not implemented yet
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BORDER_REPEAT = 2, // Use the border for the missing pixels, too.
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BORDER_AVOID = 3 // Skip convolving the border pixels at all.
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};
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class KisKernel;
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typedef KSharedPtr<KisKernel> KisKernelSP;
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class KisKernel : public KShared
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{
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public:
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TQ_UINT32 width;
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TQ_UINT32 height;
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TQ_INT32 offset;
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TQ_INT32 factor;
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TQ_INT32 * data;
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KisKernel() : width(0), height(0), offset(0), factor(0), data(0) {};
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virtual ~KisKernel() { delete [] data; };
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static KisKernelSP fromTQImage(const TQImage& img);
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};
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class KRITACORE_EXPORT KisConvolutionPainter : public KisPainter
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{
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typedef KisPainter super;
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public:
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KisConvolutionPainter();
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KisConvolutionPainter(KisPaintDeviceSP device);
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/**
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* Convolve all channels in src using the specified kernel; there is only one kernel for all
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* channels possible. By default the the border pixels are not convolved, that is, convolving
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* starts with at (x + kernel.width/2, y + kernel.height/2) and stops at w - (kernel.width/2)
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* and h - (kernel.height/2)
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*
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* The border op decides what to do with pixels too close to the edge of the rect as defined above.
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*
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* The channels flag determines which set out of color channels, alpha channels, substance or substrate
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* channels we convolve.
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*
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* Note that we do not (currently) support different kernels for different channels _or_ channel types.
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*/
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void applyMatrix(KisKernelSP kernel, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h,
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KisConvolutionBorderOp borderOp = BORDER_AVOID,
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KisChannelInfo::enumChannelFlags channelFlags = KisChannelInfo::FLAG_COLOR);
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private:
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/**
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* This function is called by applyMatrix when borderOp == BORDER_REPEAT
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*/
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void applyMatrixRepeat(KisKernelSP kernel, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h,
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KisChannelInfo::enumChannelFlags channelFlags);
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};
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#endif //KIS_CONVOLUTION_PAINTER_H_
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