2019-06-13 13:18:09 +02:00
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/****************************************************************************
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*
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* ftsvg.c
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*
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* The FreeType svg renderer interface (body).
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*
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* Copyright (C) 1996-2019 by
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2019-07-01 21:15:50 +02:00
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* David Turner, Robert Wilhelm, Werner Lemberg and Moazin Khatti.
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2019-06-13 13:18:09 +02:00
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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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#include <ft2build.h>
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2019-07-17 20:31:59 +02:00
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#include FT_INTERNAL_DEBUG_H
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#include FT_SERVICE_PROPERTIES_H
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2019-07-10 13:28:39 +02:00
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#include FT_SVG_RENDER_H
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#include FT_BBOX_H
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2019-06-15 07:17:47 +02:00
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2019-07-21 17:20:10 +02:00
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#ifdef FT_CONFIG_OPTION_DEFAULT_SVG
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2019-07-21 08:39:10 +02:00
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#include <rsvg_port.h>
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#endif
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2019-06-13 13:18:09 +02:00
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#include <stdio.h>
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#include "ftsvg.h"
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2019-07-22 18:16:35 +02:00
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#ifdef FT_CONFIG_OPTION_SVG
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2019-06-13 13:18:09 +02:00
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/* ft_svg_init */
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static FT_Error
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ft_svg_init( SVG_Renderer svg_module )
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{
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FT_Error error = FT_Err_Ok;
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2019-06-13 13:18:09 +02:00
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svg_module->loaded = FALSE;
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2019-07-21 17:20:10 +02:00
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#ifdef FT_CONFIG_OPTION_DEFAULT_SVG
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svg_module->hooks.init_svg = (SVG_Lib_Init_Func)rsvg_port_init;
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svg_module->hooks.free_svg = (SVG_Lib_Free_Func)rsvg_port_free;
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svg_module->hooks.render_svg = (SVG_Lib_Render_Func)rsvg_port_render;
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svg_module->hooks.get_buffer_size = (SVG_Lib_Get_Buffer_Size_Func)rsvg_port_get_buffer_size;
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2019-07-21 10:43:13 +02:00
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svg_module->hooks_set = TRUE;
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#else
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svg_module->hooks_set = FALSE;
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2019-07-21 08:39:10 +02:00
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#endif
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2019-06-20 20:07:36 +02:00
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return error;
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2019-06-13 13:18:09 +02:00
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}
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static void
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ft_svg_done( SVG_Renderer svg_module )
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{
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FT_Library library = svg_module->root.root.library;
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if ( svg_module->loaded == TRUE &&
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svg_module->hooks_set == TRUE )
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svg_module->hooks.free_svg( library );
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2019-07-05 18:02:17 +02:00
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svg_module->loaded = FALSE;
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}
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2019-06-13 13:18:09 +02:00
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static FT_Error
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ft_svg_render( FT_Renderer renderer,
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FT_GlyphSlot slot,
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FT_Render_Mode mode,
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const FT_Vector* origin )
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{
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SVG_Renderer svg_renderer = (SVG_Renderer)renderer;
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FT_Library library = renderer->root.library;
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FT_Memory memory = library->memory;
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FT_BBox outline_bbox;
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FT_Error error;
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FT_ULong size_image_buffer;
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SVG_RendererHooks hooks = svg_renderer->hooks;
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2019-07-21 10:43:13 +02:00
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if ( svg_renderer->hooks_set == FALSE )
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{
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return FT_THROW( Missing_SVG_Hooks );
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}
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if ( svg_renderer->loaded == FALSE )
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2019-06-16 10:52:59 +02:00
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{
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error = hooks.init_svg( library );
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svg_renderer->loaded = TRUE;
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}
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2019-07-06 12:38:37 +02:00
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/* Let's calculate the bounding box in font units here */
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error = FT_Outline_Get_BBox( &slot->outline, &outline_bbox );
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if( error != FT_Err_Ok )
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return error;
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size_image_buffer = hooks.get_buffer_size( slot, outline_bbox );
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FT_MEM_ALLOC( slot->bitmap.buffer, size_image_buffer );
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if ( error )
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return error;
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2019-07-10 13:28:39 +02:00
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return hooks.render_svg( slot, outline_bbox );
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}
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static FT_Error
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ft_svg_property_set( FT_Module module,
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const char* property_name,
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const void* value,
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FT_Bool value_is_string )
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{
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FT_Error error = FT_Err_Ok;
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SVG_Renderer renderer = (SVG_Renderer)module;
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2019-07-17 21:05:49 +02:00
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if ( !ft_strcmp( property_name, "svg_hooks" ) )
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{
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SVG_RendererHooks* hooks = (SVG_RendererHooks*)value;
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renderer->hooks = *hooks;
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renderer->hooks_set = TRUE;
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}
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else
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{
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error = FT_THROW( Missing_Property );
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}
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return error;
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}
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static FT_Error
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ft_svg_property_get( FT_Module module,
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const char* property_name,
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const void* value )
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{
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FT_Error error = FT_Err_Ok;
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SVG_Renderer renderer = (SVG_Renderer)module;
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2019-07-17 21:05:49 +02:00
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if ( !ft_strcmp( property_name, "svg_hooks" ) )
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{
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SVG_RendererHooks* hooks = (SVG_RendererHooks*)value;
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*hooks = renderer->hooks;
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}
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else
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{
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error = FT_THROW( Missing_Property );
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}
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return error;
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}
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2019-07-17 20:31:59 +02:00
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FT_DEFINE_SERVICE_PROPERTIESREC(
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ft_svg_service_properties,
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(FT_Properties_SetFunc)ft_svg_property_set, /* set_property */
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(FT_Properties_GetFunc)ft_svg_property_get /* get_property */
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)
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FT_DEFINE_SERVICEDESCREC1(
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ft_svg_services,
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FT_SERVICE_ID_PROPERTIES, &ft_svg_service_properties )
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2019-06-15 07:17:47 +02:00
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2019-07-17 20:31:59 +02:00
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FT_CALLBACK_DEF( FT_Module_Interface )
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ft_svg_get_interface( FT_Module module,
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const char* ft_svg_interface )
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{
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FT_Module_Interface result;
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2019-07-17 20:31:59 +02:00
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result = ft_service_list_lookup( ft_svg_services, ft_svg_interface );
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if ( result )
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return result;
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return 0;
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}
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2019-07-22 18:16:35 +02:00
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#endif
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#ifdef FT_CONFIG_OPTION_SVG
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#define PUT_SVG_MODULE( a ) a
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#else
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#define PUT_SVG_MODULE( a ) NULL
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#endif
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2019-06-13 13:18:09 +02:00
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FT_DEFINE_RENDERER(
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ft_svg_renderer_class,
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FT_MODULE_RENDERER,
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sizeof( SVG_RendererRec ),
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"ot-svg",
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0x10000L,
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0x20000L,
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NULL, /* module specific interface */
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(FT_Module_Constructor)PUT_SVG_MODULE( ft_svg_init ), /* module_init */
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(FT_Module_Destructor)PUT_SVG_MODULE( ft_svg_done ), /* module_done */
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PUT_SVG_MODULE( ft_svg_get_interface ), /* get_interface */
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#ifdef FT_CONFIG_OPTION_SVG
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FT_GLYPH_FORMAT_SVG,
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#else
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FT_GLYPH_FORMAT_NONE,
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#endif
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(FT_Renderer_RenderFunc)PUT_SVG_MODULE( ft_svg_render ),
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NULL,
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NULL,
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NULL,
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NULL
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)
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