forked from minhngoc25a/freetype2
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/****************************************************************************
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*
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* otsvg.h
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*
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* Interface for OT-SVG support related things (specification).
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*
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* Copyright (C) 2004-2019 by
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* David Turner, Robert Wilhelm, Werner Lemberg and Moazin Khatti.
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*
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* This file is part of the FreeType project, and may only be used,
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* modified, and distributed under the terms of the FreeType project
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* license, LICENSE.TXT. By continuing to use, modify, or distribute
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* this file you indicate that you have read the license and
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* understand and accept it fully.
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*
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*/
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#ifndef FTSVG_RENDERER_H_
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#define FTSVG_RENDERER_H_
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#ifdef FREETYPE_H
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#error "freetype.h of FreeType 1 has been loaded!"
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#error "Please fix the directory search order for header files"
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#error "so that freetype.h of FreeType 2 is found first."
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#endif
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FT_BEGIN_HEADER
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/**************************************************************************
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*
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* @struct:
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* FT_SVG_DocumentRec_
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*
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* @description:
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* A structure that models one SVG document.
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*
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* @fields:
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* svg_document ::
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* A pointer to the SVG document string.
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*
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* svg_document_length ::
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* The length of the SVG document string.
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*
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* metrics ::
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* A metrics object storing the size information.
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*
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* units_per_EM ::
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* The size of the EM square.
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*
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* start_glyph_id ::
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* The starting glyph ID for the glyph range that this document has.
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*
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* end_glyph_id ::
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* The ending glyph ID for the glyph range that this document has.
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*
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* @note:
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* `metrics` and `units_per_EM` might look like repetitions since both
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* fields are stored in face object, but they are not; When the slot is
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* passed down to a renderer, the renderer can only access the `metrics`
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* and `units_per_EM` by `slot->face`. However, when `FT_Glyph_To_Bitmap`
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* sets up a dummy object, it has no way to set a `face` object. Thus,
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* metrics information and units_per_EM (which is necessary for OT-SVG)
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* has to be stored separately.
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*/
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typedef struct FT_SVG_DocumentRec_
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{
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FT_Byte* svg_document;
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FT_ULong svg_document_length;
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FT_Size_Metrics metrics;
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FT_UShort units_per_EM;
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FT_UShort start_glyph_id;
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FT_UShort end_glyph_id;
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} FT_SVG_DocumentRec;
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/**************************************************************************
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*
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* @type:
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* FT_SVG_Document
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*
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* @description:
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* A handle to a FT_SVG_DocumentRec object.
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*/
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typedef struct FT_SVG_DocumentRec_* FT_SVG_Document;
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FT_END_HEADER
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#endif
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