1 files changed, 162 insertions, 0 deletions
diff --git a/chalk/plugins/filters/colors/kis_minmax_filters.cpp b/chalk/plugins/filters/colors/kis_minmax_filters.cpp
new file mode 100644
index 000000000..eac48ad3c
--- /dev/null
+++ b/chalk/plugins/filters/colors/kis_minmax_filters.cpp
@@ -0,0 +1,162 @@
+/*
+ * This file is part of Chalk
+ *
+ * Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
+ *
+ *  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_minmax_filters.h"
+
+#include <kis_iterators_pixel.h>
+
+typedef void (*funcMaxMin)(const TQ_UINT8* , TQ_UINT8* , uint );
+
+template<typename _TYPE>
+void maximize(const TQ_UINT8* s, TQ_UINT8* d, uint nbpixels)
+{
+    const _TYPE* sT = (_TYPE*)(s);
+    _TYPE* dT = (_TYPE*)(d);
+    _TYPE vmax = *sT;
+    for(uint i = 1; i < nbpixels; i ++)
+    {
+        if(sT[i] > vmax)
+        {
+            vmax = sT[i];
+        }
+    }
+    for(uint i = 0; i < nbpixels; i ++)
+    {
+        if(dT[i] != vmax)
+        {
+            dT[i] = 0;
+        }
+    }
+}
+
+template<typename _TYPE>
+        void minimize(const TQ_UINT8* s, TQ_UINT8* d, uint nbpixels)
+{
+    const _TYPE* sT = (_TYPE*)(s);
+    _TYPE* dT = (_TYPE*)(d);
+    _TYPE vmin = *sT;
+    for(uint i = 1; i < nbpixels; i ++)
+    {
+        if(sT[i] < vmin)
+        {
+            vmin = sT[i];
+        }
+    }
+    for(uint i = 0; i < nbpixels; i ++)
+    {
+        if(dT[i] != vmin)
+        {
+            dT[i] = 0;
+        }
+    }
+}
+
+KisFilterMax::KisFilterMax() : KisFilter(id(), "colors", i18n("M&aximize Channel"))
+{
+}
+
+void KisFilterMax::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* /*config*/, const TQRect& rect)
+{
+    Q_ASSERT(src != 0);
+    Q_ASSERT(dst != 0);
+    
+    KisRectIteratorPixel dstIt = dst->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), true );
+    KisRectIteratorPixel srcIt = src->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), false);
+
+    int pixelsProcessed = 0;
+    setProgressTotalSteps(rect.width() * rect.height());
+
+    KisColorSpace * cs = src->colorSpace();
+    TQ_INT32 nC = cs->nColorChannels();
+    
+    funcMaxMin F;
+    KisChannelInfo::enumChannelValueType cT = cs->channels()[0]->channelValueType();
+    if( cT == KisChannelInfo::UINT8 || cT == KisChannelInfo::INT8 )
+    {
+        F = & maximize<TQ_UINT8>;
+    } else if( cT == KisChannelInfo::UINT16 || cT == KisChannelInfo::INT16 )
+    {
+        F = & maximize<TQ_UINT8>;
+    } else if( cT == KisChannelInfo::FLOAT32 )
+    {
+        F = & maximize<float>;
+    } else {
+        return;
+    }
+    
+    while( ! srcIt.isDone() )
+    {
+        if(srcIt.isSelected())
+        {
+            F( srcIt.oldRawData(), dstIt.rawData(), nC);
+        }
+        setProgress(++pixelsProcessed);
+        ++srcIt;
+        ++dstIt;
+    }
+    setProgressDone(); // Must be called even if you don't really support progression
+}
+
+KisFilterMin::KisFilterMin() : KisFilter(id(), "colors", i18n("M&inimize Channel"))
+{
+}
+
+void KisFilterMin::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* /*config*/, const TQRect& rect)
+{
+    Q_ASSERT(src != 0);
+    Q_ASSERT(dst != 0);
+    
+    KisRectIteratorPixel dstIt = dst->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), true );
+    KisRectIteratorPixel srcIt = src->createRectIterator(rect.x(), rect.y(), rect.width(), rect.height(), false);
+
+    int pixelsProcessed = 0;
+    setProgressTotalSteps(rect.width() * rect.height());
+
+    KisColorSpace * cs = src->colorSpace();
+    TQ_INT32 nC = cs->nColorChannels();
+    
+    funcMaxMin F;
+    KisChannelInfo::enumChannelValueType cT = cs->channels()[0]->channelValueType();
+    if( cT == KisChannelInfo::UINT8 || cT == KisChannelInfo::INT8 )
+    {
+        F = & minimize<TQ_UINT8>;
+    } else if( cT == KisChannelInfo::UINT16 || cT == KisChannelInfo::INT16 )
+    {
+        F = & minimize<TQ_UINT8>;
+    } else if( cT == KisChannelInfo::FLOAT32 )
+    {
+        F = & minimize<float>;
+    } else {
+        return;
+    }
+    
+    while( ! srcIt.isDone() )
+    {
+        if(srcIt.isSelected())
+        {
+            F( srcIt.oldRawData(), dstIt.rawData(), nC);
+        }
+        setProgress(++pixelsProcessed);
+        ++srcIt;
+        ++dstIt;
+    }
+    setProgressDone(); // Must be called even if you don't really support progression
+}
+