Web/GifCanvas/src/drawimage.h

/*NB_REVISION*/
 
/*NB_COPYRIGHT*/
 
/* This file contains a simple class for drawing Graphics into a GIF image */
 
#ifndef _DRAWIMAGE_H_
#define _DRAWIMAGE_H_
 
#include <basictypes.h>
 
#include "gifCompress.h"
 
class GitCompress;
 
class DrawImageObject
{
    uint8_t *m_pImageBuffer = nullptr;
    uint8_t *m_pColorArray = nullptr;
 
    int m_xSize = 0;
    int m_ySize = 0;
    int m_nColors = 0;
 
    int m_curx = 0;
    int m_cury = 0;
 
    bool m_trans = false;
    uint8_t m_transIndex = 0;
 
    GitCompress m_gitCompress;
 
    friend class GitCompress;
 
   private:
    int GIFNextPixel();
    void compress(int init_bits, int fd);
 
   public:
    /* You must specify the size and color depth of the GIF object in the constructor */
    DrawImageObject(int x, int y, int ncolors, bool transparent, uint8_t transIndex);
    ~DrawImageObject();
 
    /* Set a specific pixel to a specific color */
    void PutPixel(int x, int y, uint8_t color);
 
    /* Get the color of a specific pixel */
    uint8_t GetPixel(int x, int y);
 
    /* All colors are index based. You must define the color for each index */
    void SetColor(uint8_t index, uint8_t red, uint8_t green, uint8_t blue);
 
    /* Draw a line */
    void Line(int x1, int y1, int x2, int y2, uint8_t colorindex);
 
    /* Draw a box */
    void Box(int x1, int y1, int x2, int y2, uint8_t colorindex);
 
    /* Draw a filled box */
    void FilledBox(int x1, int y1, int x2, int y2, uint8_t fillc, uint8_t outlinec);
 
    /* Draw text */
    void Text(const char *pText, int x1, int x2, const char *fontrecord, uint8_t color);
    int TextXsize(const char *pText, const char *fontrecord);
    int TextYsize(const char *pText, const char *fontrecord);
 
    /* After you have  done all of your drawing you must call this function to send the GIF */
    void WriteGIF(int fd);
};
 
extern const char GiantFont[];
extern const char LargeFont[];
extern const char MediumFont[];
extern const char SmallFont[];
extern const char TinyFont[];
 
#endif /* _DRAWIMAGE_H_ */