src/freenet/captcha/freeimage/font.cpp

   1 #include "../../../../include/freenet/captcha/freeimage/font.h"\r
   2 \r
   3 namespace FreeImage\r
   4 {\r
   5 \r
   6 Font::Font()\r
   7 {\r
   8         m_fontwidth=0;\r
   9         m_fontheight=0;\r
  10 }\r
  11 \r
  12 Font::Font(const Bitmap &bmp)\r
  13 {\r
  14         m_fontwidth=0;\r
  15         m_fontheight=0;\r
  16         Load(bmp);\r
  17 }\r
  18 \r
  19 Font::~Font()\r
  20 {\r
  21 \r
  22 }\r
  23 \r
  24 const Bitmap &Font::Char(const int num)\r
  25 {\r
  26         if(num>=0 && num<256 && m_chars.size()>num)\r
  27         {\r
  28                 return m_chars[num];\r
  29         }\r
  30         else\r
  31         {\r
  32                 return m_blank;\r
  33         }\r
  34 }\r
  35 \r
  36 const bool Font::Load(const Bitmap &bmp)\r
  37 {\r
  38         m_fontwidth=bmp.Width()/16;\r
  39         m_fontheight=bmp.Height()/14;\r
  40 \r
  41         m_chars.clear();\r
  42         m_chars.resize(256);\r
  43 \r
  44         int charnum=32;\r
  45         for(int yy=0; yy<bmp.Height(); yy+=m_fontheight)\r
  46         {\r
  47                 for(int xx=0; xx<bmp.Width(); xx+=m_fontwidth)\r
  48                 {\r
  49                         bool found=false;\r
  50                         int width=m_fontwidth;\r
  51                         int idx=bmp.GetPixelIndex(xx+m_fontwidth-1,yy);\r
  52                         for(int x=xx+m_fontwidth-1; x>xx && found==false; x--)\r
  53                         {\r
  54                                 for(int y=yy; y<yy+m_fontheight && found==false; y++)\r
  55                                 {\r
  56                                         if(bmp.GetPixelIndex(x,y)!=idx)\r
  57                                         {\r
  58                                                 found=true;\r
  59                                         }\r
  60                                 }\r
  61                                 if(found==false)\r
  62                                 {\r
  63                                         width--;\r
  64                                 }\r
  65                         }\r
  66                         width==0 ? width=1 : width=width;\r
  67                         width++;\r
  68                         width>m_fontwidth ? width=m_fontwidth : false;\r
  69                         m_chars[charnum].Create(width,m_fontheight,32);\r
  70                         m_chars[charnum].Blit(bmp,0,0,xx,yy,width,m_fontheight,-1);\r
  71                         m_chars[charnum].SetTransparent();\r
  72                         RGBQUAD col=m_chars[charnum].GetPixel(m_chars[charnum].Width()-1,0);\r
  73                         for(int y=0; y<m_chars[charnum].Height(); y++)\r
  74                         {\r
  75                                 for(int x=0; x<m_chars[charnum].Width(); x++)\r
  76                                 {\r
  77                                         RGBQUAD col2=m_chars[charnum].GetPixel(x,y);\r
  78                                         if(col.rgbRed==col2.rgbRed && col.rgbGreen==col2.rgbGreen && col.rgbBlue==col2.rgbBlue)\r
  79                                         {\r
  80                                                 col2.rgbReserved=0;\r
  81                                                 m_chars[charnum].PutPixel(x,y,col2);\r
  82                                         }\r
  83                                 }\r
  84                         }\r
  85                         charnum++;\r
  86                 }\r
  87         }\r
  88 \r
  89         return true;\r
  90 }\r
  91 \r
  92 }       // namespace FreeImage\r