forked from minhngoc25a/freetype2
139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
#ifndef __FT_STROKER_H__
|
|
#define __FT_STROKER_H__
|
|
|
|
#include <ft2build.h>
|
|
#include FT_OUTLINE_H
|
|
|
|
FT_BEGIN_HEADER
|
|
|
|
/**************************************************************
|
|
*
|
|
* @type: FT_Stroker
|
|
*
|
|
* @description:
|
|
* opaque handler to a path stroker object
|
|
*/
|
|
typedef struct FT_StrokerRec_* FT_Stroker;
|
|
|
|
|
|
/**************************************************************
|
|
*
|
|
* @enum: FT_Stroker_LineJoin
|
|
*
|
|
* @description:
|
|
* these values determine how two joining lines are rendered
|
|
* in a stroker.
|
|
*
|
|
* @values:
|
|
* FT_STROKER_LINEJOIN_ROUND ::
|
|
* used to render rounded line joins. circular arcs are used
|
|
* to join two lines smoothly
|
|
*
|
|
* FT_STROKER_LINEJOIN_BEVEL ::
|
|
* used to render beveled line joins; i.e. the two joining lines
|
|
* are extended until they intersect
|
|
*
|
|
* FT_STROKER_LINEJOIN_MITER ::
|
|
* same as beveled rendering, except that an additional line
|
|
* break is added if the angle between the two joining lines
|
|
* is too closed (this is useful to avoid unpleasant spikes
|
|
* in beveled rendering).
|
|
*/
|
|
typedef enum
|
|
{
|
|
FT_STROKER_LINEJOIN_ROUND = 0,
|
|
FT_STROKER_LINEJOIN_BEVEL,
|
|
FT_STROKER_LINEJOIN_MITER
|
|
|
|
} FT_Stroker_LineJoin;
|
|
|
|
|
|
/**************************************************************
|
|
*
|
|
* @enum: FT_Stroker_LineCap
|
|
*
|
|
* @description:
|
|
* these values determine how the end of opened sub-paths are
|
|
* rendered in a stroke
|
|
*
|
|
* @values:
|
|
* FT_STROKER_LINECAP_BUTT ::
|
|
* the end of lines is rendered as a full stop on the last
|
|
* point itself
|
|
*
|
|
* FT_STROKER_LINECAP_ROUND ::
|
|
* the end of lines is rendered as a half-circle around the
|
|
* last point
|
|
*
|
|
* FT_STROKER_LINEJOIN_MITER ::
|
|
* the end of lines is rendered as a square around the
|
|
* last point
|
|
*/
|
|
typedef enum
|
|
{
|
|
FT_STROKER_LINECAP_BUTT = 0,
|
|
FT_STROKER_LINECAP_ROUND,
|
|
FT_STROKER_LINECAP_SQUARE
|
|
|
|
} FT_Stroker_LineCap;
|
|
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_New( FT_Memory memory,
|
|
FT_Stroker *astroker );
|
|
|
|
FT_EXPORT( void )
|
|
FT_Stroker_Set( FT_Stroker stroker,
|
|
FT_Fixed radius,
|
|
FT_Stroker_LineCap line_cap,
|
|
FT_Stroker_LineJoin line_join,
|
|
FT_Fixed miter_limit );
|
|
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_ParseOutline( FT_Stroker stroker,
|
|
FT_Outline* outline,
|
|
FT_Bool opened );
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_BeginSubPath( FT_Stroker stroker,
|
|
FT_Vector* to,
|
|
FT_Bool open );
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_EndSubPath( FT_Stroker stroker );
|
|
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_LineTo( FT_Stroker stroker,
|
|
FT_Vector* to );
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_ConicTo( FT_Stroker stroker,
|
|
FT_Vector* control,
|
|
FT_Vector* to );
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_CubicTo( FT_Stroker stroker,
|
|
FT_Vector* control1,
|
|
FT_Vector* control2,
|
|
FT_Vector* to );
|
|
|
|
|
|
FT_EXPORT( FT_Error )
|
|
FT_Stroker_GetCounts( FT_Stroker stroker,
|
|
FT_UInt *anum_points,
|
|
FT_UInt *anum_contours );
|
|
|
|
FT_EXPORT( void )
|
|
FT_Stroker_Export( FT_Stroker stroker,
|
|
FT_Outline* outline );
|
|
|
|
FT_EXPORT( void )
|
|
FT_Stroker_Done( FT_Stroker stroker );
|
|
|
|
|
|
FT_END_HEADER
|
|
|
|
#endif /* __FT_STROKER_H__ */
|