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#ifndef __gfxdevice_h__
#define __gfxdevice_h__
#ifdef __cplusplus
extern "C" {
#endif
#define GFX_SUBPIXEL 2560
typedef double gfxcoord_t;
typedef enum {gfx_moveTo, gfx_lineTo, gfx_splineTo} gfx_linetype;
typedef enum {gfx_joinMiter, gfx_joinRound, gfx_joinBevel} gfx_joinType;
typedef enum {gfx_capButt, gfx_capRound, gfx_capSquare} gfx_capType;
typedef struct _gfxline
{
gfx_linetype type;
gfxcoord_t x,y;
gfxcoord_t sx,sy;
struct _gfxline*next; /*NULL=end*/
} gfxline_t;
typedef struct _gfxglyph
{
gfxline_t*line;
gfxcoord_t advance;
int unicode; // array?
const char*name;
} gfxglyph_t;
typedef struct _gfxfont
{
const char*id;
int num_glyphs;
int max_unicode;
double ascent,descent;
gfxglyph_t*glyphs;
int* unicode2glyph;
} gfxfont_t;
typedef struct _gfxcolor
{
unsigned char a;
unsigned char r;
unsigned char g;
unsigned char b;
} gfxcolor_t;
typedef struct _gfxmatrix
{
double m00,m10,tx;
double m01,m11,ty;
} gfxmatrix_t;
typedef struct _gfximage
{
/* if the data contains an alpha layer (a != 255), the
r,g,b values will have to be premultiplied */
gfxcolor_t*data;
unsigned width;
unsigned height;
} gfximage_t;
/* gradients: A radial gradient will start at 0,0 and have a radius of 1,0
An axial gradient starts at -1,0 and ends at 1,0
*/
typedef enum {gfxgradient_radial, gfxgradient_linear} gfxgradienttype_t;
typedef struct _gfxgradient
{
gfxcolor_t color;
float pos; // 0.0 - 1.0
struct _gfxgradient*next; //NULL=end
} gfxgradient_t;
typedef struct _gfxcxform
{
float rr,rg,rb,ra, tr;
float gr,gg,gb,ga, tg;
float br,bg,bb,ba, tb;
float ar,ag,ab,aa, ta;
} gfxcxform_t;
typedef struct _gfxbbox
{
gfxcoord_t xmin, ymin, xmax, ymax;
} gfxbbox_t;
typedef struct _gfxresult
{
void (*write)(struct _gfxresult*gfx, int filedesc);
int (*save)(struct _gfxresult*gfx, const char*filename);
void* (*get)(struct _gfxresult*gfx, const char*name);
void (*destroy)(struct _gfxresult*gfx);
void*internal;
} gfxresult_t;
typedef struct _gfxdevice
{
const char* name; // gfx device name
int (*setparameter)(struct _gfxdevice*dev, const char*key, const char*value);
void (*startpage)(struct _gfxdevice*dev, int width, int height);
void (*startclip)(struct _gfxdevice*dev, gfxline_t*line);
void (*endclip)(struct _gfxdevice*dev);
void (*stroke)(struct _gfxdevice*dev, gfxline_t*line, gfxcoord_t width, gfxcolor_t*color, gfx_capType cap_style, gfx_joinType joint_style, gfxcoord_t miterLimit);
void (*fill)(struct _gfxdevice*dev, gfxline_t*line, gfxcolor_t*color);
/* expects alpha channel in image to be non-premultiplied */
void (*fillbitmap)(struct _gfxdevice*dev, gfxline_t*line, gfximage_t*img, gfxmatrix_t*imgcoord2devcoord, gfxcxform_t*cxform); //cxform? tiling?
void (*fillgradient)(struct _gfxdevice*dev, gfxline_t*line, gfxgradient_t*gradient, gfxgradienttype_t type, gfxmatrix_t*gradcoord2devcoord); //?
void (*addfont)(struct _gfxdevice*dev, gfxfont_t*font);
void (*drawchar)(struct _gfxdevice*dev, gfxfont_t*font, int glyph, gfxcolor_t*color, gfxmatrix_t*matrix);
void (*drawlink)(struct _gfxdevice*dev, gfxline_t*line, const char*action, const char*text);
void (*endpage)(struct _gfxdevice*dev);
const char* (*geterror)();
gfxresult_t* (*finish)(struct _gfxdevice*dev);
void* internal;
} gfxdevice_t;
#ifdef __cplusplus
}
#endif
#endif //__gfxdevice_h__
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