arospdf/splash/SplashBitmap.h

   1 //========================================================================
   2 //
   3 // SplashBitmap.h
   4 //
   5 //========================================================================
   6
   7 #ifndef SPLASHBITMAP_H
   8 #define SPLASHBITMAP_H
   9
  10 #include <aconf.h>
  11
  12 #ifdef USE_GCC_PRAGMAS
  13 #pragma interface
  14 #endif
  15
  16 #include "SplashTypes.h"
  17
  18 //------------------------------------------------------------------------
  19 // SplashBitmap
  20 //------------------------------------------------------------------------
  21
  22 class SplashBitmap {
  23 public:
  24
  25   // Create a new bitmap.  It will have <widthA> x <heightA> pixels in
  26   // color mode <modeA>.  Rows will be padded out to a multiple of
  27   // <rowPad> bytes.  If <topDown> is false, the bitmap will be stored
  28   // upside-down, i.e., with the last row first in memory.
  29   SplashBitmap(int widthA, int heightA, int rowPad,
  30                SplashColorMode modeA, GBool alphaA,
  31                GBool topDown = gTrue);
  32
  33   ~SplashBitmap();
  34
  35   int getWidth() { return width; }
  36   int getHeight() { return height; }
  37   int getRowSize() { return rowSize; }
  38   int getAlphaRowSize() { return width; }
  39   SplashColorMode getMode() { return mode; }
  40   SplashColorPtr getDataPtr() { return data; }
  41   Guchar *getAlphaPtr() { return alpha; }
  42
  43   SplashError writePNMFile(char *fileName);
  44
  45   void getPixel(int x, int y, SplashColorPtr pixel);
  46   Guchar getAlpha(int x, int y);
  47
  48 private:
  49
  50   int width, height;            // size of bitmap
  51   int rowSize;                  // size of one row of data, in bytes
  52                                 //   - negative for bottom-up bitmaps
  53   SplashColorMode mode;         // color mode
  54   SplashColorPtr data;          // pointer to row zero of the color data
  55   Guchar *alpha;                // pointer to row zero of the alpha data
  56                                 //   (always top-down)
  57
  58   friend class Splash;
  59 };
  60
  61 #endif