Differential D19164 Diff 53087 imagelib/effects/kpEffectReduceColors.cpp

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imagelib/effects/kpEffectReduceColors.cpp

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69QImage kpEffectReduceColors::convertImageDepth (const QImage &image, int depth, bool dither) 69​QImage kpEffectReduceColors::convertImageDepth (const QImage &image, int depth, bool dither)
70{ 70​{
71 qCDebug(kpLogImagelib) << "kpeffectreducecolors.cpp:ConvertImageDepth() changing image (w=" << image.width () 71​ qCDebug(kpLogImagelib) << "kpeffectreducecolors.cpp:ConvertImageDepth() changing image (w=" << image.width ()
72 << ",h=" << image.height () 72​ << ",h=" << image.height ()
73 << ") depth from " << image.depth () 73​ << ") depth from " << image.depth ()
74 << " to " << depth 74​ << " to " << depth
75 << " (dither=" << dither << ")"; 75​ << " (dither=" << dither << ")";
76 76​
77 if (image.isNull ()) 77​ if (image.isNull ()) {
78 return image; 78​ return image;
79​ }
79 80​
80 if (depth == image.depth ()) 81​ if (depth == image.depth ()) {
81 return image; 82​ return image;
83​ }
82 84​
83 85​
84 for (int y = 0; y < image.height (); y++) 86​ for (int y = 0; y < image.height (); y++)
85 { 87​ {
86 for (int x = 0; x < image.width (); x++) 88​ for (int x = 0; x < image.width (); x++)
87 { 89​ {
88 fprintf (stderr, " %08X", image.pixel (x, y)); 90​ fprintf (stderr, " %08X", image.pixel (x, y));
89 } 91​ }
Show All 16 Lines105 {
106 bool color0Valid = false, color1Valid = false; 108​ bool color0Valid = false, color1Valid = false;
107 109​
108 bool moreThan2Colors = false; 110​ bool moreThan2Colors = false;
109 111​
110 QImage monoImage (image.width (), image.height (), QImage::Format_MonoLSB); 112​ QImage monoImage (image.width (), image.height (), QImage::Format_MonoLSB);
111 monoImage.setColorCount (2); 113​ monoImage.setColorCount (2);
112 qCDebug(kpLogImagelib) << "\t\tinitialising output image w=" << monoImage.width () 114​ qCDebug(kpLogImagelib) << "\t\tinitialising output image w=" << monoImage.width ()
113 << ",h=" << monoImage.height () 115​ << ",h=" << monoImage.height ()
114 << ",d=" << monoImage.depth () 116​ << ",d=" << monoImage.depth ();
115 << endl; ​
116 for (int y = 0; y < image.height (); y++) 117​ for (int y = 0; y < image.height (); y++)
117 { 118​ {
118 for (int x = 0; x < image.width (); x++) 119​ for (int x = 0; x < image.width (); x++)
119 { 120​ {
120 // (this can be transparent) 121​ // (this can be transparent)
121 QRgb imagePixel = image.pixel (x, y); 122​ QRgb imagePixel = image.pixel (x, y);
122 123​
123 if (color0Valid && imagePixel == color0) 124​ if (color0Valid && imagePixel == color0) {
124 monoImage.setPixel (x, y, 0); 125​ monoImage.setPixel (x, y, 0);
125 else if (color1Valid && imagePixel == color1) 126​ }
127​ else if (color1Valid && imagePixel == color1) {
126 monoImage.setPixel (x, y, 1); 128​ monoImage.setPixel (x, y, 1);
127 else if (!color0Valid) 129​ }
128 { 130​ else if (!color0Valid) {
129 color0 = imagePixel; 131​ color0 = imagePixel;
130 color0Valid = true; 132​ color0Valid = true;
131 monoImage.setPixel (x, y, 0); 133​ monoImage.setPixel (x, y, 0);
132 qCDebug(kpLogImagelib) << "\t\t\tcolor0=" << (int *) color0 134​ qCDebug(kpLogImagelib) << "\t\t\tcolor0=" << (int *) color0
133 << " at x=" << x << ",y=" << y << endl; 135​ << " at x=" << x << ",y=" << y;
134 } 136​ }
135 else if (!color1Valid) 137​ else if (!color1Valid)
136 { 138​ {
137 color1 = imagePixel; 139​ color1 = imagePixel;
138 color1Valid = true; 140​ color1Valid = true;
139 monoImage.setPixel (x, y, 1); 141​ monoImage.setPixel (x, y, 1);
140 qCDebug(kpLogImagelib) << "\t\t\tcolor1=" << (int *) color1 142​ qCDebug(kpLogImagelib) << "\t\t\tcolor1=" << (int *) color1
141 << " at x=" << x << ",y=" << y << endl; 143​ << " at x=" << x << ",y=" << y;
142 } 144​ }
143 else 145​ else
144 { 146​ {
145 qCDebug(kpLogImagelib) << "\t\t\timagePixel=" << (int *) imagePixel 147​ qCDebug(kpLogImagelib) << "\t\t\timagePixel=" << (int *) imagePixel
146 << " at x=" << x << ",y=" << y 148​ << " at x=" << x << ",y=" << y
147 << " moreThan2Colors - abort hack" << endl; 149​ << " moreThan2Colors - abort hack";
148 moreThan2Colors = true; 150​ moreThan2Colors = true;
149 151​
150 // Dijkstra, this is clearer than double break'ing or 152​ // Dijkstra, this is clearer than double break'ing or
151 // a check in both loops 153​ // a check in both loops
152 goto exit_loop; 154​ goto exit_loop;
153 } 155​ }
154 } 156​ }
155 } 157​ }
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184 return retImage; 186​ return retImage;
185} 187​}
186 188​
187//--------------------------------------------------------------------- 189​//---------------------------------------------------------------------
188 190​
189// public static 191​// public static
190void kpEffectReduceColors::applyEffect (QImage *destPtr, int depth, bool dither) 192​void kpEffectReduceColors::applyEffect (QImage *destPtr, int depth, bool dither)
191{ 193​{
192 if (!destPtr) 194​ if (!destPtr) {
193 return; 195​ return;
196​ }
194 197​
195 // You can't "reduce" to 32-bit since it's the highest depth. 198​ // You can't "reduce" to 32-bit since it's the highest depth.
196 if (depth != 1 && depth != 8) 199​ if (depth != 1 && depth != 8) {
197 return; 200​ return;
201​ }
198 202​
199 *destPtr = convertImageDepth(*destPtr, depth, dither); 203​ *destPtr = convertImageDepth(*destPtr, depth, dither);
200 204​
201 // internally we always use QImage::Format_ARGB32_Premultiplied and 205​ // internally we always use QImage::Format_ARGB32_Premultiplied and
202 // this effect is just an "effect" in that it changes the image (the look) somehow 206​ // this effect is just an "effect" in that it changes the image (the look) somehow
203 // When one wants a different depth on the file, then he needs to save the image 207​ // When one wants a different depth on the file, then he needs to save the image
204 // in that depth 208​ // in that depth
205 *destPtr = destPtr->convertToFormat(QImage::Format_ARGB32_Premultiplied); 209​ *destPtr = destPtr->convertToFormat(QImage::Format_ARGB32_Premultiplied);
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