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diff --git a/chalk/core/kis_convolution_painter.h b/chalk/core/kis_convolution_painter.h
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+/*
+ *  Copyright (c) 2005 Cyrille Berger <[email protected]>
+ *
+ *  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.
+ */
+#ifndef KIS_CONVOLUTION_PAINTER_H_
+#define KIS_CONVOLUTION_PAINTER_H_
+
+#include <tqimage.h>
+
+#include "ksharedptr.h"
+#include "kis_types.h"
+#include "kis_painter.h"
+
+#include "koffice_export.h"
+
+enum KisConvolutionBorderOp {
+    BORDER_DEFAULT_FILL = 0, // Use the default pixel to make up for the missing pixels on the border or the pixel that lies beyond
+                             // the rect we are convolving.
+    BORDER_WRAP = 1, // Use the pixel on the opposite side to make up for the missing pixels on the border. XXX: Not implemented yet
+    BORDER_REPEAT = 2, // Use the border for the missing pixels, too.
+    BORDER_AVOID = 3 // Skip convolving the border pixels at all.
+};
+
+class KisKernel;
+typedef KSharedPtr<KisKernel> KisKernelSP;
+
+class KisKernel : public KShared 
+{
+
+public:
+    
+    TQ_UINT32 width;
+    TQ_UINT32 height;
+    TQ_INT32 offset;
+    TQ_INT32 factor;
+    TQ_INT32 * data;
+
+    KisKernel() : width(0), height(0), offset(0), factor(0), data(0) {};
+
+    virtual ~KisKernel() { delete [] data; };
+
+    static KisKernelSP fromTQImage(const TQImage& img);
+
+};
+
+
+class KRITACORE_EXPORT KisConvolutionPainter : public KisPainter
+{
+
+    typedef KisPainter super;
+
+public:
+
+    KisConvolutionPainter();
+    KisConvolutionPainter(KisPaintDeviceSP device);
+
+    /**
+     * Convolve all channels in src using the specified kernel; there is only one kernel for all
+     * channels possible. By default the the border pixels are not convolved, that is, convolving
+     * starts with at (x + kernel.width/2, y + kernel.height/2) and stops at w - (kernel.width/2)
+     * and h - (kernel.height/2)
+     *
+     * The border op decides what to do with pixels too close to the edge of the rect as defined above.
+     *
+     * The channels flag determines which set out of color channels, alpha channels, substance or substrate
+     * channels we convolve.
+     *
+     * Note that we do not (currently) support different kernels for different channels _or_ channel types.
+     */
+    void applyMatrix(KisKernelSP kernel, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h,
+                     KisConvolutionBorderOp borderOp = BORDER_AVOID,
+                     KisChannelInfo::enumChannelFlags channelFlags = KisChannelInfo::FLAG_COLOR);
+private:
+    /**
+     * This function is called by applyMatrix when borderOp == BORDER_REPEAT
+     */
+    void applyMatrixRepeat(KisKernelSP kernel, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_INT32 h,
+                           KisChannelInfo::enumChannelFlags channelFlags);
+
+
+};
+#endif //KIS_CONVOLUTION_PAINTER_H_