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diff --git a/src/image.cpp b/src/image.cpp
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+/******************************************************************************
+ *
+ * $Id: image.cpp,v 1.14 2001/03/19 19:27:40 root Exp $
+ *
+ *
+ * Copyright (C) 1997-2012 by Dimitri van Heesch.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation under the terms of the GNU General Public License is hereby
+ * granted. No representations are made about the suitability of this software
+ * for any purpose. It is provided "as is" without express or implied warranty.
+ * See the GNU General Public License for more details.
+ *
+ * Documents produced by Doxygen are derivative works derived from the
+ * input used in their production; they are not affected by this license.
+ *
+ */
+
+#include "qtbc.h"
+#include "image.h"
+#include <qfile.h>
+#include <math.h>
+#include "lodepng.h"
+#include "config.h"
+
+typedef unsigned char Byte;
+
+/** Helper struct representing a RGBA color */
+struct Color
+{
+ Byte red;
+ Byte green;
+ Byte blue;
+ Byte alpha;
+};
+
+const int charSetWidth=80;
+const int charHeight=12;
+const int numChars=96;
+
+unsigned short charPos[numChars] =
+ {
+ 0, 5, 8, 13, 20, 27, 38, 47,
+ 50, 54, 58, 65, 72, 76, 83, 87,
+ 91, 98,105,112,119,126,133,140,
+ 147,154,161,164,167,174,181,188,
+ 195,207,216,224,233,242,250,258,
+ 267,276,279,286,294,301,312,321,
+ 331,339,349,357,365,372,380,389,
+ 400,409,418,427,430,434,437,443,
+ 450,453,460,467,474,481,488,492,
+ 499,506,509,512,518,521,530,537,
+ 544,551,557,562,568,571,578,585,
+ 594,600,607,613,617,620,624,631
+ };
+
+unsigned char charWidth[numChars] =
+ {
+ 5, 3, 5, 7, 7,11, 9, 3,
+ 4, 4, 7, 7, 4, 7, 4, 4,
+
+ 7, 7, 7, 7, 7, 7, 7, 7,
+ 7, 7, 3, 3, 7, 7, 7, 7,
+ 12, 9, 8, 9, 9, 8, 8, 9,
+ 9, 3, 7, 8, 7,11, 9,10,
+ 8,10, 8, 8, 7, 8, 9,11,
+ 9, 9, 9, 3, 4, 3, 6, 7,
+ 3, 7, 7, 7, 7, 7, 4, 7,
+ 7, 3, 3, 6, 3, 9, 7, 7,
+ 7, 6, 5, 6, 3, 7, 7, 9,
+ 6, 7, 6, 4, 3, 4, 7, 5
+ };
+
+unsigned char fontRaw[charSetWidth*charHeight] = {
+ 0x02, 0x50, 0x01, 0x06, 0x20, 0x60, 0xc6, 0x04, 0x00, 0x00, 0x00, 0x27,
+ 0x04, 0x1c, 0x38, 0x11, 0xf1, 0xc7, 0xc7, 0x0e, 0x00, 0x00, 0x00, 0x03,
+ 0x81, 0xf0, 0x10, 0x7c, 0x1e, 0x3e, 0x1f, 0x9f, 0x87, 0x88, 0x24, 0x09,
+ 0x09, 0x02, 0x02, 0x41, 0x0f, 0x0f, 0x83, 0xc3, 0xe1, 0xe7, 0xf4, 0x24,
+ 0x12, 0x22, 0x41, 0x20, 0x9f, 0xce, 0x30, 0x00, 0x10, 0x04, 0x00, 0x01,
+ 0x00, 0x30, 0x08, 0x12, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0xac, 0x00, 0x00, 0x02, 0x51, 0x43, 0x89,
+ 0x40, 0x90, 0x49, 0x15, 0x00, 0x00, 0x00, 0x28, 0x9c, 0x22, 0x44, 0x31,
+ 0x02, 0x20, 0x48, 0x91, 0x00, 0x00, 0x00, 0x04, 0x46, 0x08, 0x28, 0x42,
+ 0x21, 0x21, 0x10, 0x10, 0x08, 0x48, 0x24, 0x09, 0x11, 0x03, 0x06, 0x61,
+ 0x10, 0x88, 0x44, 0x22, 0x12, 0x10, 0x84, 0x24, 0x12, 0x22, 0x22, 0x20,
+ 0x80, 0x4a, 0x11, 0x00, 0x20, 0x04, 0x00, 0x01, 0x00, 0x40, 0x08, 0x00,
+ 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00,
+ 0x02, 0x22, 0x00, 0x00, 0x02, 0x51, 0x45, 0x49, 0x40, 0x90, 0x89, 0x0a,
+ 0x00, 0x00, 0x00, 0x48, 0x84, 0x02, 0x04, 0x51, 0x02, 0x00, 0x88, 0x91,
+ 0x00, 0x00, 0x00, 0x04, 0x44, 0xd4, 0x28, 0x42, 0x40, 0x20, 0x90, 0x10,
+ 0x10, 0x08, 0x24, 0x09, 0x21, 0x03, 0x06, 0x51, 0x20, 0x48, 0x48, 0x12,
+ 0x12, 0x00, 0x84, 0x22, 0x22, 0x22, 0x22, 0x11, 0x00, 0x89, 0x12, 0x80,
+ 0x31, 0xc5, 0x87, 0x0d, 0x1c, 0xe3, 0x4b, 0x12, 0x49, 0x29, 0x16, 0x1c,
+ 0x58, 0x69, 0x4c, 0xe8, 0x91, 0x44, 0x61, 0x44, 0xf2, 0x22, 0x00, 0x00,
+ 0x02, 0x07, 0xe5, 0x06, 0x80, 0x60, 0x10, 0x95, 0x08, 0x00, 0x00, 0x48,
+ 0x84, 0x04, 0x18, 0x51, 0xe2, 0xc0, 0x87, 0x11, 0x24, 0x18, 0x03, 0x00,
+ 0x89, 0x24, 0x44, 0x42, 0x40, 0x20, 0x90, 0x10, 0x10, 0x08, 0x24, 0x09,
+ 0x41, 0x02, 0x8a, 0x51, 0x20, 0x48, 0x48, 0x12, 0x11, 0x80, 0x84, 0x22,
+ 0x21, 0x24, 0x14, 0x11, 0x01, 0x09, 0x14, 0x40, 0x02, 0x26, 0x48, 0x93,
+ 0x22, 0x44, 0xcc, 0x92, 0x51, 0x36, 0x99, 0x22, 0x64, 0x99, 0x92, 0x48,
+ 0x91, 0x44, 0x52, 0x44, 0x12, 0x22, 0x00, 0x00, 0x02, 0x01, 0x43, 0x80,
+ 0x80, 0xa0, 0x10, 0x84, 0x08, 0x00, 0x00, 0x88, 0x84, 0x08, 0x04, 0x90,
+ 0x13, 0x21, 0x08, 0x8f, 0x00, 0x61, 0xf0, 0xc0, 0x8a, 0x24, 0x44, 0x7c,
+ 0x40, 0x20, 0x9f, 0x9f, 0x11, 0xcf, 0xe4, 0x09, 0xc1, 0x02, 0x8a, 0x49,
+ 0x20, 0x4f, 0x88, 0x13, 0xe0, 0x60, 0x84, 0x22, 0x21, 0x54, 0x08, 0x0a,
+ 0x02, 0x08, 0x90, 0x00, 0x00, 0x24, 0x48, 0x11, 0x22, 0x44, 0x48, 0x92,
+ 0x61, 0x24, 0x91, 0x22, 0x44, 0x89, 0x10, 0x48, 0x91, 0x24, 0x8c, 0x44,
+ 0x22, 0x22, 0x64, 0x00, 0x02, 0x07, 0xe1, 0x41, 0x31, 0x14, 0x10, 0x80,
+ 0x3e, 0x07, 0xc0, 0x88, 0x84, 0x10, 0x05, 0x10, 0x12, 0x21, 0x08, 0x81,
+ 0x01, 0x80, 0x00, 0x31, 0x0a, 0x24, 0x7c, 0x42, 0x40, 0x20, 0x90, 0x10,
+ 0x10, 0x48, 0x24, 0x09, 0x21, 0x02, 0x52, 0x45, 0x20, 0x48, 0x08, 0x92,
+ 0x20, 0x10, 0x84, 0x21, 0x41, 0x54, 0x14, 0x04, 0x04, 0x08, 0x90, 0x00,
+ 0x01, 0xe4, 0x48, 0x11, 0x3e, 0x44, 0x48, 0x92, 0x61, 0x24, 0x91, 0x22,
+ 0x44, 0x89, 0x0c, 0x48, 0x8a, 0x24, 0x8c, 0x48, 0x44, 0x21, 0x98, 0x00,
+ 0x02, 0x02, 0x85, 0x41, 0x49, 0x08, 0x10, 0x80, 0x08, 0x00, 0x00, 0x88,
+ 0x84, 0x20, 0x45, 0xf9, 0x12, 0x21, 0x08, 0x81, 0x00, 0x61, 0xf0, 0xc1,
+ 0x0a, 0x68, 0x82, 0x42, 0x40, 0x20, 0x90, 0x10, 0x10, 0x48, 0x24, 0x89,
+ 0x11, 0x02, 0x52, 0x45, 0x20, 0x48, 0x08, 0x52, 0x12, 0x10, 0x84, 0x21,
+ 0x40, 0x88, 0x22, 0x04, 0x08, 0x08, 0x90, 0x00, 0x02, 0x24, 0x48, 0x11,
+ 0x20, 0x44, 0x48, 0x92, 0x51, 0x24, 0x91, 0x22, 0x44, 0x89, 0x02, 0x48,
+ 0x8a, 0x2a, 0x92, 0x28, 0x42, 0x22, 0x00, 0x00, 0x00, 0x02, 0x85, 0x41,
+ 0x49, 0x18, 0x10, 0x80, 0x08, 0x00, 0x01, 0x08, 0x84, 0x20, 0x44, 0x11,
+ 0x12, 0x22, 0x08, 0x91, 0x00, 0x18, 0x03, 0x00, 0x09, 0xb0, 0x82, 0x42,
+ 0x21, 0x21, 0x10, 0x10, 0x08, 0xc8, 0x24, 0x89, 0x09, 0x02, 0x22, 0x43,
+ 0x10, 0x88, 0x04, 0x22, 0x12, 0x10, 0x84, 0x20, 0x80, 0x88, 0x22, 0x04,
+ 0x10, 0x08, 0x50, 0x00, 0x02, 0x26, 0x48, 0x93, 0x22, 0x44, 0xc8, 0x92,
+ 0x49, 0x24, 0x91, 0x22, 0x64, 0x99, 0x12, 0x49, 0x84, 0x11, 0x21, 0x28,
+ 0x82, 0x22, 0x00, 0x00, 0x02, 0x02, 0x83, 0x82, 0x30, 0xe4, 0x10, 0x80,
+ 0x00, 0x20, 0x05, 0x07, 0x04, 0x3e, 0x38, 0x10, 0xe1, 0xc2, 0x07, 0x0e,
+ 0x24, 0x00, 0x00, 0x01, 0x04, 0x00, 0x82, 0x7c, 0x1e, 0x3e, 0x1f, 0x90,
+ 0x07, 0x48, 0x24, 0x71, 0x05, 0xf2, 0x22, 0x41, 0x0f, 0x08, 0x03, 0xd2,
+ 0x11, 0xe0, 0x83, 0xc0, 0x80, 0x88, 0x41, 0x04, 0x1f, 0xc8, 0x50, 0x00,
+ 0x01, 0xd5, 0x87, 0x0d, 0x1c, 0x43, 0x48, 0x92, 0x45, 0x24, 0x91, 0x1c,
+ 0x58, 0x69, 0x0c, 0x66, 0x84, 0x11, 0x21, 0x10, 0xf2, 0x22, 0x00, 0x00,
+ 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x20, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
+ 0x03, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x40, 0x02, 0x00, 0x00, 0x00, 0x00, 0x40, 0x08, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x10, 0x02, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x09, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x08, 0x10, 0x1f, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x04, 0x40, 0x02,
+ 0x00, 0x00, 0x00, 0x00, 0x40, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
+ 0x02, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x30, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x80, 0x04, 0x00, 0x00, 0x00, 0x00,
+ 0x40, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x01, 0xac, 0x00, 0x00
+};
+
+static Color palette[] =
+{
+ { 0xff, 0xff, 0xff, 0x00 },
+ { 0x00, 0x00, 0x00, 0xff },
+ { 0xff, 0xff, 0xc0, 0xff },
+ { 0x9f, 0x9f, 0x60, 0xff },
+ { 0x90, 0x00, 0x00, 0xff },
+ { 0x00, 0x90, 0x00, 0xff },
+ { 0x00, 0x00, 0x90, 0xff },
+ { 0xc0, 0xc0, 0xc0, 0xff }
+};
+
+// for alpha we use x^(1/1.3)
+static Color palette2[] =
+{
+ { 0x00, 0x00, 0x00, 0x00 },
+ { 0x00, 0x00, 0x00, 0x2e },
+ { 0x00, 0x00, 0x00, 0x48 },
+ { 0x00, 0x00, 0x00, 0x5d },
+ { 0x00, 0x00, 0x00, 0x6f },
+ { 0x00, 0x00, 0x00, 0x80 },
+ { 0x00, 0x00, 0x00, 0x8f },
+ { 0x00, 0x00, 0x00, 0x9e },
+ { 0x00, 0x00, 0x00, 0xac },
+ { 0x00, 0x00, 0x00, 0xb9 },
+ { 0x00, 0x00, 0x00, 0xc5 },
+ { 0x00, 0x00, 0x00, 0xd2 },
+ { 0x00, 0x00, 0x00, 0xdd },
+ { 0x00, 0x00, 0x00, 0xe9 },
+ { 0x00, 0x00, 0x00, 0xf4 },
+ { 0x00, 0x00, 0x00, 0xff }
+};
+
+static Color palette3[] =
+{
+ { 0xff, 0xff, 0xff, 0xff },
+ { 0xe0, 0xe0, 0xe0, 0xff },
+ { 0xd0, 0xd0, 0xd0, 0xff },
+ { 0xc0, 0xc0, 0xc0, 0xff },
+ { 0xb0, 0xb0, 0xb0, 0xff },
+ { 0xa0, 0xa0, 0xa0, 0xff },
+ { 0x90, 0x90, 0x90, 0xff },
+ { 0x80, 0x80, 0x80, 0xff },
+ { 0x70, 0x70, 0x70, 0xff },
+ { 0x60, 0x60, 0x60, 0xff },
+ { 0x50, 0x50, 0x50, 0xff },
+ { 0x40, 0x40, 0x40, 0xff },
+ { 0x30, 0x30, 0x30, 0xff },
+ { 0x20, 0x20, 0x20, 0xff },
+ { 0x10, 0x10, 0x10, 0xff },
+ { 0x00, 0x00, 0x00, 0xff }
+};
+
+
+Image::Image(int w,int h)
+{
+ static int hue = Config_getInt("HTML_COLORSTYLE_HUE");
+ static int sat = Config_getInt("HTML_COLORSTYLE_SAT");
+ static int gamma = Config_getInt("HTML_COLORSTYLE_GAMMA");
+
+ double red1,green1,blue1;
+ double red2,green2,blue2;
+
+ ColoredImage::hsl2rgb(hue/360.0, // hue
+ sat/255.0, // saturation
+ pow(235/255.0,gamma/100.0), // luma (gamma corrected)
+ &red1,&green1,&blue1
+ );
+
+ ColoredImage::hsl2rgb(hue/360.0, // hue
+ sat/255.0, // saturation
+ pow(138/255.0,gamma/100.0), // luma (gamma corrected)
+ &red2,&green2,&blue2
+ );
+
+ palette[2].red = (int)(red1 * 255.0);
+ palette[2].green = (int)(green1 * 255.0);
+ palette[2].blue = (int)(blue1 * 255.0);
+
+ palette[3].red = (int)(red2 * 255.0);
+ palette[3].green = (int)(green2 * 255.0);
+ palette[3].blue = (int)(blue2 * 255.0);
+
+ data = new uchar[w*h];
+ memset(data,0,w*h);
+ width = w;
+ height = h;
+}
+
+Image::~Image()
+{
+ delete[] data;
+}
+
+void Image::setPixel(int x,int y,uchar val)
+{
+ if (x>=0 && x<width && y>=0 && y<height)
+ data[y*width+x] = val;
+}
+
+uchar Image::getPixel(int x,int y) const
+{
+ if (x>=0 && x<width && y>=0 && y<height)
+ return data[y*width+x];
+ else
+ return 0;
+}
+
+void Image::writeChar(int x,int y,char c,uchar fg)
+{
+ if (c>=' ')
+ {
+ int xf,yf,ci=c-' ';
+ int rowOffset=0;
+ int cw = charWidth[ci];
+ int cp = charPos[ci];
+ for (yf=0;yf<charHeight;yf++)
+ {
+ unsigned short bitPattern=0;
+ int bitsLeft=cw;
+ int byteOffset = rowOffset+(cp>>3);
+ int bitOffset = cp&7;
+ // get the bit pattern for row yf of the character from the font data
+ while (bitsLeft>0)
+ {
+ int bits=8-bitOffset;
+ if (bits>bitsLeft) bits=bitsLeft;
+ bitPattern<<=bits;
+ bitPattern|=((fontRaw[byteOffset]<<bitOffset)&0xff)>>(8-bits);
+ bitsLeft-=bits;
+ bitOffset=0;
+ byteOffset++;
+ }
+ int mask=1<<(cw-1);
+ // draw character row yf
+ for (xf=0;xf<cw;xf++)
+ {
+ setPixel(x+xf,y+yf,(bitPattern&mask) ? fg : getPixel(x+xf,y+yf));
+ mask>>=1;
+ }
+ rowOffset+=charSetWidth;
+ }
+ }
+}
+
+void Image::writeString(int x,int y,const char *s,uchar fg)
+{
+ if (s)
+ {
+ char c;
+ while ((c=*s++))
+ {
+ writeChar(x,y,c,fg);
+ x+=charWidth[c-' '];
+ }
+ }
+}
+
+uint Image::stringLength(const char *s)
+{
+ int w=0;
+ if (s)
+ {
+ char c;
+ while ((c=*s++)) w+=charWidth[c-' '];
+ }
+ return w;
+}
+
+void Image::drawHorzLine(int y,int xs,int xe,uchar colIndex,uint mask)
+{
+ int x,i=0,j=0;
+ for (x=xs;x<=xe;x++,j++)
+ {
+ if (j&1) i++;
+ if (mask&(1<<(i&0x1f))) setPixel(x,y,colIndex);
+ }
+}
+
+void Image::drawHorzArrow(int y,int xs,int xe,uchar colIndex,uint mask)
+{
+ drawHorzLine(y,xs,xe,colIndex,mask);
+ int i;
+ for (i=0;i<6;i++)
+ {
+ int h=i>>1;
+ drawVertLine(xe-i,y-h,y+h,colIndex,0xffffffff);
+ }
+}
+
+void Image::drawVertLine(int x,int ys,int ye,uchar colIndex,uint mask)
+{
+ int y,i=0;
+ for (y=ys;y<=ye;y++,i++)
+ {
+ if (mask&(1<<(i&0x1f))) setPixel(x,y,colIndex);
+ }
+}
+
+void Image::drawVertArrow(int x,int ys,int ye,uchar colIndex,uint mask)
+{
+ drawVertLine(x,ys,ye,colIndex,mask);
+ int i;
+ for (i=0;i<6;i++)
+ {
+ int h=i>>1;
+ drawHorzLine(ys+i,x-h,x+h,colIndex,0xffffffff);
+ }
+}
+
+void Image::drawRect(int x,int y,int w,int h,uchar colIndex,uint mask)
+{
+ drawHorzLine(y,x,x+w-1,colIndex,mask);
+ drawHorzLine(y+h-1,x,x+w-1,colIndex,mask);
+ drawVertLine(x,y,y+h-1,colIndex,mask);
+ drawVertLine(x+w-1,y,y+h-1,colIndex,mask);
+}
+
+void Image::fillRect(int x,int y,int lwidth,int lheight,uchar colIndex,uint mask)
+{
+ int xp,yp,xi,yi;
+ for (yp=y,yi=0;yp<y+lheight;yp++,yi++)
+ for (xp=x,xi=0;xp<x+lwidth;xp++,xi++)
+ if (mask&(1<<((xi+yi)&0x1f)))
+ setPixel(xp,yp,colIndex);
+}
+
+bool Image::save(const char *fileName,int mode)
+{
+#if 0
+ GifEncoder gifenc(data,
+ mode==0 ? palette : palette2,
+ width,height,
+ mode==0 ? 3 : 4,
+ 0);
+ QFile file(fileName);
+ if (file.open(IO_WriteOnly))
+ {
+ gifenc.writeGIF(file);
+ return TRUE;
+ }
+ else
+ {
+ return FALSE;
+ }
+#endif
+ static bool useTransparency = Config_getBool("FORMULA_TRANSPARENT");
+ uchar* buffer;
+ size_t bufferSize;
+ LodePNG_Encoder encoder;
+ LodePNG_Encoder_init(&encoder);
+ int numCols = mode==0 ? 8 : 16;
+ Color *pPal = mode==0 ? palette :
+ useTransparency ? palette2 :
+ palette3 ;
+ int i;
+ for (i=0;i<numCols;i++,pPal++)
+ {
+ LodePNG_InfoColor_addPalette(&encoder.infoPng.color,
+ pPal->red,pPal->green,pPal->blue,pPal->alpha);
+ }
+ encoder.infoPng.color.colorType = 3;
+ encoder.infoRaw.color.colorType = 3;
+ LodePNG_encode(&encoder, &buffer, &bufferSize, data, width, height);
+ LodePNG_saveFile(buffer, bufferSize, fileName);
+ free(buffer);
+ LodePNG_Encoder_cleanup(&encoder);
+ return TRUE;
+}
+
+//----------------------------------------------------------------
+
+void ColoredImage::hsl2rgb(double h,double s,double l,
+ double *pRed,double *pGreen,double *pBlue)
+{
+ double v;
+ double r,g,b;
+
+ r = l; // default to gray
+ g = l;
+ b = l;
+ v = (l <= 0.5) ? (l * (1.0 + s)) : (l + s - l * s);
+ if (v > 0)
+ {
+ double m;
+ double sv;
+ int sextant;
+ double fract, vsf, mid1, mid2;
+
+ m = l + l - v;
+ sv = (v - m ) / v;
+ h *= 6.0;
+ sextant = (int)h;
+ fract = h - sextant;
+ vsf = v * sv * fract;
+ mid1 = m + vsf;
+ mid2 = v - vsf;
+ switch (sextant)
+ {
+ case 0:
+ r = v;
+ g = mid1;
+ b = m;
+ break;
+ case 1:
+ r = mid2;
+ g = v;
+ b = m;
+ break;
+ case 2:
+ r = m;
+ g = v;
+ b = mid1;
+ break;
+ case 3:
+ r = m;
+ g = mid2;
+ b = v;
+ break;
+ case 4:
+ r = mid1;
+ g = m;
+ b = v;
+ break;
+ case 5:
+ r = v;
+ g = m;
+ b = mid2;
+ break;
+ }
+ }
+ *pRed = r;
+ *pGreen = g;
+ *pBlue = b;
+}
+
+ColoredImage::ColoredImage(int width,int height,
+ const uchar *greyLevels,const uchar *alphaLevels,
+ int saturation,int hue,int gamma)
+{
+ m_hasAlpha = alphaLevels!=0;
+ m_width = width;
+ m_height = height;
+ m_data = (uchar*)malloc(width*height*4);
+ int i;
+ for (i=0;i<width*height;i++)
+ {
+ uchar r,g,b,a;
+ double red,green,blue;
+ hsl2rgb(hue/360.0, // hue
+ saturation/255.0, // saturation
+ pow(greyLevels[i]/255.0,gamma/100.0), // luma (gamma corrected)
+ &red,&green,&blue);
+ r = (int)(red *255.0);
+ g = (int)(green*255.0);
+ b = (int)(blue *255.0);
+ a = alphaLevels ? alphaLevels[i] : 255;
+ m_data[i*4+0]=r;
+ m_data[i*4+1]=g;
+ m_data[i*4+2]=b;
+ m_data[i*4+3]=a;
+ }
+}
+
+ColoredImage::~ColoredImage()
+{
+ free(m_data);
+}
+
+bool ColoredImage::save(const char *fileName)
+{
+ uchar *buffer;
+ size_t bufferSize;
+ LodePNG_Encoder encoder;
+ LodePNG_Encoder_init(&encoder);
+ encoder.infoPng.color.colorType = m_hasAlpha ? 6 : 2; // 2=RGB 24 bit, 6=RGBA 32 bit
+ encoder.infoRaw.color.colorType = 6; // 6=RGBA 32 bit
+ LodePNG_encode(&encoder, &buffer, &bufferSize, m_data, m_width, m_height);
+ LodePNG_saveFile(buffer, bufferSize, fileName);
+ LodePNG_Encoder_cleanup(&encoder);
+ free(buffer);
+ return TRUE;
+}
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 12:39:09 +0000