thorvg_capi.h

#ifndef __THORVG_CAPI_H__
#define __THORVG_CAPI_H__

#include <stdbool.h>

#ifdef TVG_EXPORT
    #undef TVG_EXPORT
#endif

#ifdef TVG_BUILD
    #define TVG_EXPORT __attribute__ ((visibility ("default")))
#else
    #define TVG_EXPORT
#endif


#ifdef __cplusplus
extern "C" {
#endif

#define TVG_ENGINE_SW (1 << 1)


#define TVG_ENGINE_GL (1 << 2)


#define TVG_COLORSPACE_ABGR8888 0


#define TVG_COLORSPACE_ARGB8888 1


typedef struct _Tvg_Canvas Tvg_Canvas;


typedef struct _Tvg_Paint Tvg_Paint;


typedef struct _Tvg_Gradient Tvg_Gradient;


typedef enum {
    TVG_RESULT_SUCCESS = 0,            
    TVG_RESULT_INVALID_ARGUMENT,       
    TVG_RESULT_INSUFFICIENT_CONDITION, 
    TVG_RESULT_FAILED_ALLOCATION,      
    TVG_RESULT_MEMORY_CORRUPTION,      
    TVG_RESULT_NOT_SUPPORTED,          
    TVG_RESULT_UNKNOWN                 
} Tvg_Result;


typedef enum {
    TVG_COMPOSITE_METHOD_NONE = 0,           
    TVG_COMPOSITE_METHOD_CLIP_PATH,          
    TVG_COMPOSITE_METHOD_ALPHA_MASK,         
    TVG_COMPOSITE_METHOD_INVERSE_ALPHA_MASK, 
} Tvg_Composite_Method;


typedef enum {
    TVG_PATH_COMMAND_CLOSE = 0, 
    TVG_PATH_COMMAND_MOVE_TO,   
    TVG_PATH_COMMAND_LINE_TO,   
    TVG_PATH_COMMAND_CUBIC_TO   
} Tvg_Path_Command;


typedef enum {
    TVG_STROKE_CAP_SQUARE = 0, 
    TVG_STROKE_CAP_ROUND,      
    TVG_STROKE_CAP_BUTT        
} Tvg_Stroke_Cap;


typedef enum {
    TVG_STROKE_JOIN_BEVEL = 0, 
    TVG_STROKE_JOIN_ROUND,     
    TVG_STROKE_JOIN_MITER      
} Tvg_Stroke_Join;


typedef enum {
    TVG_STROKE_FILL_PAD = 0, 
    TVG_STROKE_FILL_REFLECT, 
    TVG_STROKE_FILL_REPEAT   
} Tvg_Stroke_Fill;


typedef enum {
    TVG_FILL_RULE_WINDING = 0, 
    TVG_FILL_RULE_EVEN_ODD     
} Tvg_Fill_Rule;
   // end addtogroup ThorVGCapi_Shape


typedef struct
{
    float offset; 
    uint8_t r;    
    uint8_t g;    
    uint8_t b;    
    uint8_t a;    
} Tvg_Color_Stop;
   // end addtogroup ThorVGCapi_Gradient


typedef struct
{
    float x, y;
} Tvg_Point;


typedef struct
{
    float e11, e12, e13;
    float e21, e22, e23;
    float e31, e32, e33;
} Tvg_Matrix;


/************************************************************************/
/* Engine API                                                           */
/************************************************************************/
TVG_EXPORT Tvg_Result tvg_engine_init(unsigned engine_method, unsigned threads);


TVG_EXPORT Tvg_Result tvg_engine_term(unsigned engine_method);

   // end defgroup ThorVGCapi_Initializer


/************************************************************************/
/* SwCanvas API                                                         */
/************************************************************************/
TVG_EXPORT Tvg_Canvas* tvg_swcanvas_create();


TVG_EXPORT Tvg_Result tvg_swcanvas_set_target(Tvg_Canvas* canvas, uint32_t* buffer, uint32_t stride, uint32_t w, uint32_t h, uint32_t cs);

   // end defgroup ThorVGCapi_SwCanvas


/************************************************************************/
/* Common Canvas API                                                    */
/************************************************************************/
TVG_EXPORT Tvg_Result tvg_canvas_destroy(Tvg_Canvas* canvas);


TVG_EXPORT Tvg_Result tvg_canvas_push(Tvg_Canvas* canvas, Tvg_Paint* paint);


TVG_EXPORT Tvg_Result tvg_canvas_reserve(Tvg_Canvas* canvas, uint32_t n);


TVG_EXPORT Tvg_Result tvg_canvas_clear(Tvg_Canvas* canvas, bool free);


TVG_EXPORT Tvg_Result tvg_canvas_update(Tvg_Canvas* canvas);


TVG_EXPORT Tvg_Result tvg_canvas_update_paint(Tvg_Canvas* canvas, Tvg_Paint* paint);


TVG_EXPORT Tvg_Result tvg_canvas_draw(Tvg_Canvas* canvas);


TVG_EXPORT Tvg_Result tvg_canvas_sync(Tvg_Canvas* canvas);

   // end defgroup ThorVGCapi_Canvas


/************************************************************************/
/* Paint API                                                            */
/************************************************************************/
TVG_EXPORT Tvg_Result tvg_paint_del(Tvg_Paint* paint);


TVG_EXPORT Tvg_Result tvg_paint_scale(Tvg_Paint* paint, float factor);


TVG_EXPORT Tvg_Result tvg_paint_rotate(Tvg_Paint* paint, float degree);


TVG_EXPORT Tvg_Result tvg_paint_translate(Tvg_Paint* paint, float x, float y);


TVG_EXPORT Tvg_Result tvg_paint_transform(Tvg_Paint* paint, const Tvg_Matrix* m);


TVG_EXPORT Tvg_Result tvg_paint_set_opacity(Tvg_Paint* paint, uint8_t opacity);


TVG_EXPORT Tvg_Result tvg_paint_get_opacity(Tvg_Paint* paint, uint8_t* opacity);


TVG_EXPORT Tvg_Paint* tvg_paint_duplicate(Tvg_Paint* paint);


TVG_EXPORT Tvg_Result tvg_paint_get_bounds(const Tvg_Paint* paint, float* x, float* y, float* w, float* h);


TVG_EXPORT Tvg_Result tvg_paint_set_composite_method(Tvg_Paint* paint, Tvg_Paint* target, Tvg_Composite_Method method);

   // end defgroup ThorVGCapi_Paint


/************************************************************************/
/* Shape API                                                            */
/************************************************************************/
TVG_EXPORT Tvg_Paint* tvg_shape_new();


TVG_EXPORT Tvg_Result tvg_shape_reset(Tvg_Paint* paint);


TVG_EXPORT Tvg_Result tvg_shape_move_to(Tvg_Paint* paint, float x, float y);


TVG_EXPORT Tvg_Result tvg_shape_line_to(Tvg_Paint* paint, float x, float y);


TVG_EXPORT Tvg_Result tvg_shape_cubic_to(Tvg_Paint* paint, float cx1, float cy1, float cx2, float cy2, float x, float y);


TVG_EXPORT Tvg_Result tvg_shape_close(Tvg_Paint* paint);


TVG_EXPORT Tvg_Result tvg_shape_append_rect(Tvg_Paint* paint, float x, float y, float w, float h, float rx, float ry);


TVG_EXPORT Tvg_Result tvg_shape_append_circle(Tvg_Paint* paint, float cx, float cy, float rx, float ry);


TVG_EXPORT Tvg_Result tvg_shape_append_arc(Tvg_Paint* paint, float cx, float cy, float radius, float startAngle, float sweep, uint8_t pie);


TVG_EXPORT Tvg_Result tvg_shape_append_path(Tvg_Paint* paint, const Tvg_Path_Command* cmds, uint32_t cmdCnt, const Tvg_Point* pts, uint32_t ptsCnt);


TVG_EXPORT Tvg_Result tvg_shape_get_path_coords(const Tvg_Paint* paint, const Tvg_Point** pts, uint32_t* cnt);


TVG_EXPORT Tvg_Result tvg_shape_get_path_commands(const Tvg_Paint* paint, const Tvg_Path_Command** cmds, uint32_t* cnt);


TVG_EXPORT Tvg_Result tvg_shape_set_stroke_width(Tvg_Paint* paint, float width);


TVG_EXPORT Tvg_Result tvg_shape_get_stroke_width(const Tvg_Paint* paint, float* width);


TVG_EXPORT Tvg_Result tvg_shape_set_stroke_color(Tvg_Paint* paint, uint8_t r, uint8_t g, uint8_t b, uint8_t a);


TVG_EXPORT Tvg_Result tvg_shape_get_stroke_color(const Tvg_Paint* paint, uint8_t* r, uint8_t* g, uint8_t* b, uint8_t* a);


TVG_EXPORT Tvg_Result tvg_shape_set_stroke_linear_gradient(Tvg_Paint* paint, Tvg_Gradient* grad);


TVG_EXPORT Tvg_Result tvg_shape_set_stroke_radial_gradient(Tvg_Paint* paint, Tvg_Gradient* grad);


TVG_EXPORT Tvg_Result tvg_shape_get_stroke_gradient(const Tvg_Paint* paint, Tvg_Gradient** grad);


TVG_EXPORT Tvg_Result tvg_shape_set_stroke_dash(Tvg_Paint* paint, const float* dashPattern, uint32_t cnt);


TVG_EXPORT Tvg_Result tvg_shape_get_stroke_dash(const Tvg_Paint* paint, const float** dashPattern, uint32_t* cnt);


TVG_EXPORT Tvg_Result tvg_shape_set_stroke_cap(Tvg_Paint* paint, Tvg_Stroke_Cap cap);


TVG_EXPORT Tvg_Result tvg_shape_get_stroke_cap(const Tvg_Paint* paint, Tvg_Stroke_Cap* cap);


TVG_EXPORT Tvg_Result tvg_shape_set_stroke_join(Tvg_Paint* paint, Tvg_Stroke_Join join);


TVG_EXPORT Tvg_Result tvg_shape_get_stroke_join(const Tvg_Paint* paint, Tvg_Stroke_Join* join);


TVG_EXPORT Tvg_Result tvg_shape_set_fill_color(Tvg_Paint* paint, uint8_t r, uint8_t g, uint8_t b, uint8_t a);


TVG_EXPORT Tvg_Result tvg_shape_get_fill_color(const Tvg_Paint* paint, uint8_t* r, uint8_t* g, uint8_t* b, uint8_t* a);


TVG_EXPORT Tvg_Result tvg_shape_set_fill_rule(Tvg_Paint* paint, Tvg_Fill_Rule rule);


TVG_EXPORT Tvg_Result tvg_shape_get_fill_rule(const Tvg_Paint* paint, Tvg_Fill_Rule* rule);


TVG_EXPORT Tvg_Result tvg_shape_set_linear_gradient(Tvg_Paint* paint, Tvg_Gradient* grad);


TVG_EXPORT Tvg_Result tvg_shape_set_radial_gradient(Tvg_Paint* paint, Tvg_Gradient* grad);


TVG_EXPORT Tvg_Result tvg_shape_get_gradient(const Tvg_Paint* paint, Tvg_Gradient** grad);

   // end defgroup ThorVGCapi_Shape


/************************************************************************/
/* Gradient API                                                         */
/************************************************************************/
TVG_EXPORT Tvg_Gradient* tvg_linear_gradient_new();


TVG_EXPORT Tvg_Gradient* tvg_radial_gradient_new();


TVG_EXPORT Tvg_Result tvg_linear_gradient_set(Tvg_Gradient* grad, float x1, float y1, float x2, float y2);


TVG_EXPORT Tvg_Result tvg_linear_gradient_get(Tvg_Gradient* grad, float* x1, float* y1, float* x2, float* y2);


TVG_EXPORT Tvg_Result tvg_radial_gradient_set(Tvg_Gradient* grad, float cx, float cy, float radius);


TVG_EXPORT Tvg_Result tvg_radial_gradient_get(Tvg_Gradient* grad, float* cx, float* cy, float* radius);


TVG_EXPORT Tvg_Result tvg_gradient_set_color_stops(Tvg_Gradient* grad, const Tvg_Color_Stop* color_stop, uint32_t cnt);


TVG_EXPORT Tvg_Result tvg_gradient_get_color_stops(Tvg_Gradient* grad, const Tvg_Color_Stop** color_stop, uint32_t* cnt);


TVG_EXPORT Tvg_Result tvg_gradient_set_spread(Tvg_Gradient* grad, const Tvg_Stroke_Fill spread);


TVG_EXPORT Tvg_Result tvg_gradient_get_spread(Tvg_Gradient* grad, Tvg_Stroke_Fill* spread);


TVG_EXPORT Tvg_Result tvg_gradient_del(Tvg_Gradient* grad);

   // end defgroup ThorVGCapi_Gradient


/************************************************************************/
/* Picture API                                                          */
/************************************************************************/
TVG_EXPORT Tvg_Paint* tvg_picture_new();


TVG_EXPORT Tvg_Result tvg_picture_load(Tvg_Paint* paint, const char* path);


TVG_EXPORT Tvg_Result tvg_picture_load_raw(Tvg_Paint* paint, uint32_t *data, uint32_t w, uint32_t h, bool copy);


TVG_EXPORT Tvg_Result tvg_picture_get_viewbox(const Tvg_Paint* paint, float* x, float* y, float* w, float* h);

   // end defgroup ThorVGCapi_Picture


/************************************************************************/
/* Scene API                                                            */
/************************************************************************/
TVG_EXPORT Tvg_Paint* tvg_scene_new();


TVG_EXPORT Tvg_Result tvg_scene_reserve(Tvg_Paint* scene, uint32_t size);


TVG_EXPORT Tvg_Result tvg_scene_push(Tvg_Paint* scene, Tvg_Paint* paint);


TVG_EXPORT Tvg_Result tvg_scene_clear(Tvg_Paint* scene);

   // end defgroup ThorVGCapi_Scene

   // end defgroup ThorVG_CAPI


#ifdef __cplusplus
}
#endif

#endif //_THORVG_CAPI_H_