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