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@ -1,19 +1,20 @@ |
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/*******************************************************************
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* |
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* t1driver.c |
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* |
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* High-level Type1 driver interface for FreeType 2.0 |
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* |
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* Copyright 1996-1998 by |
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* David Turner, Robert Wilhelm, and Werner Lemberg. |
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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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/***************************************************************************/ |
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/* */ |
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/* t1driver.c */ |
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/* */ |
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/* Type 1 driver interface (body). */ |
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/* */ |
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/* Copyright 1996-2000 by */ |
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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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 <t1driver.h> |
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#include <t1gload.h> |
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@ -23,10 +24,20 @@ |
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#include <freetype/internal/ftstream.h> |
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#include <freetype/internal/psnames.h> |
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/*************************************************************************/ |
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/* */ |
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/* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
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/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
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/* messages during execution. */ |
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/* */ |
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#undef FT_COMPONENT |
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#define FT_COMPONENT trace_t1driver |
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#ifndef T1_CONFIG_OPTION_NO_AFM |
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/*************************************************************************/ |
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/* */ |
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/* <Function> */ |
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@ -58,7 +69,7 @@ |
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FTDriver_Interface Get_Interface( FT_Driver driver, |
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const FT_String* interface ) |
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{ |
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UNUSED(driver); |
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UNUSED( driver ); |
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if ( strcmp( (const char*)interface, "attach_file" ) == 0 ) |
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return (FTDriver_Interface)T1_Read_AFM; |
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@ -108,87 +119,97 @@ |
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{ |
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T1_AFM* afm; |
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kerning->x = 0; |
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kerning->y = 0; |
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afm = (T1_AFM*)face->afm_data; |
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if (afm) |
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if ( afm ) |
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T1_Get_Kerning( afm, left_glyph, right_glyph, kerning ); |
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return T1_Err_Ok; |
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} |
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#endif |
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/******************************************************************/ |
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/* */ |
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/* <Function> Set_Char_Sizes */ |
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/* */ |
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/* <Description> */ |
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/* A driver method used to reset a size's character sizes */ |
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/* (horizontal and vertical) expressed in fractional points. */ |
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/* */ |
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/* <Input> */ |
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/* size :: handle to target size object */ |
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/* char_width :: character width expressed in 26.6 points */ |
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/* char_height :: character height expressed in 26.6 points */ |
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/* */ |
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/* <Return> */ |
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/* FreeType error code. 0 means success */ |
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/* */ |
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#endif /* !T1_CONFIG_OPTION_NO_AFM */ |
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/*************************************************************************/ |
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/* */ |
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/* <Function> */ |
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/* Set_Char_Sizes */ |
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/* */ |
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/* <Description> */ |
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/* A driver method used to reset a size's character sizes (horizontal */ |
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/* and vertical) expressed in fractional points. */ |
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/* */ |
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/* <Input> */ |
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/* char_width :: The character width expressed in 26.6 */ |
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/* fractional points. */ |
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/* */ |
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/* char_height :: The character height expressed in 26.6 */ |
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/* fractional points. */ |
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/* */ |
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/* horz_resolution :: The horizontal resolution of the output device. */ |
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/* */ |
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/* vert_resolution :: The vertical resolution of the output device. */ |
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/* */ |
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/* <InOut> */ |
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/* size :: A handle to the target size object. */ |
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/* */ |
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/* <Return> */ |
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/* FreeType error code. 0 means success. */ |
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/* */ |
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static |
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FT_Error Set_Char_Sizes( T1_Size size, |
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FT_F26Dot6 char_width, |
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FT_F26Dot6 char_height, |
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FT_UInt horz_resolution, |
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FT_UInt vert_resolution ) |
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FT_Error Set_Char_Sizes( T1_Size size, |
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FT_F26Dot6 char_width, |
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FT_F26Dot6 char_height, |
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FT_UInt horz_resolution, |
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FT_UInt vert_resolution ) |
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{ |
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UNUSED(char_width); |
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UNUSED(char_height); |
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UNUSED(horz_resolution); |
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UNUSED(vert_resolution); |
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UNUSED( char_width ); |
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UNUSED( char_height ); |
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UNUSED( horz_resolution ); |
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UNUSED( vert_resolution ); |
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size->valid = FALSE; |
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|
return T1_Reset_Size( size ); |
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} |
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/******************************************************************/ |
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/* */ |
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/* <Function> Set_Pixel_Sizes */ |
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/* */ |
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/* <Description> */ |
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/* A driver method used to reset a size's character sizes */ |
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/* (horizontal and vertical) expressed in integer pixels. */ |
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/* */ |
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/* <Input> */ |
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/* size :: handle to target size object */ |
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/* */ |
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/* pixel_width :: character width expressed in 26.6 points */ |
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/* */ |
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/* pixel_height :: character height expressed in 26.6 points */ |
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/* */ |
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/* char_size :: the corresponding character size in points */ |
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/* This value is only sent to the TrueType */ |
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/* bytecode interpreter, even though 99% of */ |
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/* glyph programs will simply ignore it. A */ |
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/* safe value there is the maximum of the */ |
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/* pixel width and height (multiplied by */ |
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/* 64 to make it a 26.6 fixed float !) */ |
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/* <Return> */ |
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/* FreeType error code. 0 means success */ |
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/* */ |
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/*************************************************************************/ |
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/* */ |
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/* <Function> */ |
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/* Set_Pixel_Sizes */ |
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/* */ |
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/* <Description> */ |
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/* A driver method used to reset a size's character sizes (horizontal */ |
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/* and vertical) expressed in integer pixels. */ |
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/* */ |
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/* <Input> */ |
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/* pixel_width :: The character width expressed in integer pixels. */ |
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/* */ |
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/* pixel_height :: The character height expressed in integer pixels. */ |
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/* */ |
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/* <InOut> */ |
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/* size :: A handle to the target size object. */ |
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/* */ |
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/* <Return> */ |
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/* FreeType error code. 0 means success. */ |
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/* */ |
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static |
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FT_Error Set_Pixel_Sizes( T1_Size size, |
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|
FT_Int pixel_width, |
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|
FT_Int pixel_height ) |
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|
FT_Error Set_Pixel_Sizes( T1_Size size, |
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|
FT_Int pixel_width, |
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FT_Int pixel_height ) |
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{ |
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|
UNUSED(pixel_width); |
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UNUSED(pixel_height); |
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UNUSED( pixel_width ); |
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|
UNUSED( pixel_height ); |
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|
size->valid = FALSE; |
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|
|
return T1_Reset_Size(size); |
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|
return T1_Reset_Size( size ); |
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} |
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|
/*************************************************************************/ |
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|
/* */ |
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|
/* <Function> */ |
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|
@ -212,154 +233,82 @@ |
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FT_UInt result = 0; |
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|
PSNames_Interface* psnames; |
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|
face = (T1_Face)charmap->face; |
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|
psnames = (PSNames_Interface*)face->psnames; |
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|
if (psnames) |
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|
|
switch (charmap->encoding) |
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|
if ( psnames ) |
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|
switch ( charmap->encoding ) |
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|
{ |
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|
/********************************************************************/ |
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|
/* */ |
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|
/* Unicode encoding support */ |
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|
/* */ |
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|
|
case ft_encoding_unicode: |
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|
|
/*******************************************************************/ |
|
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|
/* */ |
|
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|
|
/* Unicode encoding support */ |
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|
/* */ |
|
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|
|
case ft_encoding_unicode: |
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|
|
/* use the `PSNames' module to synthetize the Unicode charmap */ |
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|
|
result = psnames->lookup_unicode( &face->unicode_map, |
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|
|
(FT_ULong)charcode ); |
|
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|
|
|
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|
|
/* the function returns 0xFFFF if the Unicode charcode has */ |
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|
|
/* no corresponding glyph. */ |
|
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|
|
if ( result == 0xFFFF ) |
|
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|
|
result = 0; |
|
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|
|
goto Exit; |
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|
|
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|
|
/*******************************************************************/ |
|
|
|
|
/* */ |
|
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|
|
/* Custom Type 1 encoding */ |
|
|
|
|
/* */ |
|
|
|
|
case ft_encoding_adobe_custom: |
|
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|
|
{ |
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|
|
T1_Encoding* encoding = &face->type1.encoding; |
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|
|
|
|
|
|
|
|
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|
|
if ( charcode >= encoding->code_first && |
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|
|
charcode <= encoding->code_last ) |
|
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|
|
result = encoding->char_index[charcode]; |
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|
|
goto Exit; |
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|
|
} |
|
|
|
|
|
|
|
|
|
/*******************************************************************/ |
|
|
|
|
/* */ |
|
|
|
|
/* Adobe Standard & Expert encoding support */ |
|
|
|
|
/* */ |
|
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|
|
default: |
|
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|
|
if ( charcode < 256 ) |
|
|
|
|
{ |
|
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|
|
FT_UInt code; |
|
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|
|
FT_Int n; |
|
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|
|
const char* glyph_name; |
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|
|
|
|
|
|
|
|
|
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|
|
code = psnames->adobe_std_encoding[charcode]; |
|
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|
|
if ( charmap->encoding == ft_encoding_adobe_expert ) |
|
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|
|
code = psnames->adobe_expert_encoding[charcode]; |
|
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|
|
|
|
|
|
|
glyph_name = psnames->adobe_std_strings( code ); |
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|
|
if ( !glyph_name ) |
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|
|
break; |
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|
|
|
|
|
|
|
for ( n = 0; n < face->type1.num_glyphs; n++ ) |
|
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|
|
{ |
|
|
|
|
/* use the "psnames" module to synthetize the Unicode charmap */ |
|
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|
|
result = psnames->lookup_unicode( &face->unicode_map, |
|
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|
|
(FT_ULong)charcode ); |
|
|
|
|
|
|
|
|
|
/* the function returns 0xFFFF when the Unicode charcode has */ |
|
|
|
|
/* no corresponding glyph.. */ |
|
|
|
|
if (result == 0xFFFF) |
|
|
|
|
result = 0; |
|
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|
|
goto Exit; |
|
|
|
|
} |
|
|
|
|
const char* gname = face->type1.glyph_names[n]; |
|
|
|
|
|
|
|
|
|
/********************************************************************/ |
|
|
|
|
/* */ |
|
|
|
|
/* Custom Type 1 encoding */ |
|
|
|
|
/* */ |
|
|
|
|
case ft_encoding_adobe_custom: |
|
|
|
|
{ |
|
|
|
|
T1_Encoding* encoding = &face->type1.encoding; |
|
|
|
|
if (charcode >= encoding->code_first && |
|
|
|
|
charcode <= encoding->code_last) |
|
|
|
|
|
|
|
|
|
if ( gname && gname[0] == glyph_name[0] && |
|
|
|
|
strcmp( gname, glyph_name ) == 0 ) |
|
|
|
|
{ |
|
|
|
|
result = encoding->char_index[charcode]; |
|
|
|
|
result = n; |
|
|
|
|
break; |
|
|
|
|
} |
|
|
|
|
goto Exit; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/********************************************************************/ |
|
|
|
|
/* */ |
|
|
|
|
/* Adobe Standard & Expert encoding support */ |
|
|
|
|
/* */ |
|
|
|
|
default: |
|
|
|
|
if (charcode < 256) |
|
|
|
|
{ |
|
|
|
|
FT_UInt code; |
|
|
|
|
FT_Int n; |
|
|
|
|
const char* glyph_name; |
|
|
|
|
|
|
|
|
|
code = psnames->adobe_std_encoding[charcode]; |
|
|
|
|
if (charmap->encoding == ft_encoding_adobe_expert) |
|
|
|
|
code = psnames->adobe_expert_encoding[charcode]; |
|
|
|
|
|
|
|
|
|
glyph_name = psnames->adobe_std_strings(code); |
|
|
|
|
if (!glyph_name) break; |
|
|
|
|
|
|
|
|
|
for ( n = 0; n < face->type1.num_glyphs; n++ ) |
|
|
|
|
{ |
|
|
|
|
const char* gname = face->type1.glyph_names[n]; |
|
|
|
|
|
|
|
|
|
if ( gname && gname[0] == glyph_name[0] && |
|
|
|
|
strcmp( gname, glyph_name ) == 0 ) |
|
|
|
|
{ |
|
|
|
|
result = n; |
|
|
|
|
break; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
Exit: |
|
|
|
|
return result; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/******************************************************************/ |
|
|
|
|
/* */ |
|
|
|
|
/* <Struct> FT_DriverInterface */ |
|
|
|
|
/* */ |
|
|
|
|
/* <Description> */ |
|
|
|
|
/* A structure used to hold a font driver's basic interface */ |
|
|
|
|
/* used by the high-level parts of FreeType (or other apps) */ |
|
|
|
|
/* */ |
|
|
|
|
/* Most scalable drivers provide a specialized interface to */ |
|
|
|
|
/* access format-specific features. It can be retrieved with */ |
|
|
|
|
/* a call to the "get_format_interface", and should be defined */ |
|
|
|
|
/* in each font driver header (e.g. ttdriver.h, t1driver.h,..) */ |
|
|
|
|
/* */ |
|
|
|
|
/* All fields are function pointers .. */ |
|
|
|
|
/* */ |
|
|
|
|
/* */ |
|
|
|
|
/* <Fields> */ |
|
|
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/* */ |
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/* new_engine :: */ |
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/* used to create and initialise a new driver object */ |
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/* */ |
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/* done_engine :: */ |
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/* used to finalise and destroy a given driver object */ |
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/* */ |
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/* get_format_interface :: */ |
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/* return a typeless pointer to the format-specific */ |
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/* driver interface. */ |
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/* */ |
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/* new_face :: */ |
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/* create a new face object from a resource */ |
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/* */ |
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/* done_face :: */ |
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/* discards a face object, as well as all child objects */ |
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/* ( sizes, charmaps, glyph slots ) */ |
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/* */ |
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/* get_face_properties :: */ |
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/* return generic face properties */ |
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/* */ |
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/* get_kerning :: */ |
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/* return the kerning vector corresponding to a pair */ |
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/* of glyphs, expressed in unscaled font units. */ |
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/* */ |
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/* new_size :: */ |
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/* create and initialise a new scalable size object. */ |
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/* */ |
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/* new_fixed_size :: */ |
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/* create and initialise a new fixed-size object. */ |
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/* */ |
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/* done_size :: */ |
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/* finalize a given face size object. */ |
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/* */ |
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/* set_size_resolutions :: */ |
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/* reset a scalable size object's output resolutions */ |
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/* */ |
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/* set_size_char_sizes :: */ |
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/* reset a scalable size object's character size */ |
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/* */ |
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/* set_pixel_sizes :: */ |
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/* reset a face size object's pixel dimensions. Applies */ |
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/* to both scalable and fixed faces. */ |
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/* */ |
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/* new_glyph_slot :: */ |
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/* create and initialise a new glyph slot */ |
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/* */ |
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/* done_glyph_slot :: */ |
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/* discard a given glyph slot */ |
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/* */ |
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/* load_glyph :: */ |
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/* load a given glyph into a given slot */ |
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/* */ |
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/* get_glyph_metrics :: */ |
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/* return a loaded glyph's metrics. */ |
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/* */ |
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const FT_DriverInterface t1_driver_interface = |
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{ |
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sizeof( FT_DriverRec ), |
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@ -373,64 +322,66 @@ |
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0, /* format interface */ |
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(FTDriver_initDriver) T1_Init_Driver, |
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(FTDriver_doneDriver) T1_Done_Driver, |
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(FTDriver_initDriver) T1_Init_Driver, |
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(FTDriver_doneDriver) T1_Done_Driver, |
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#ifdef T1_CONFIG_OPTION_NO_AFM |
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(FTDriver_getInterface) 0, |
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(FTDriver_getInterface) 0, |
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#else |
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(FTDriver_getInterface) Get_Interface, |
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(FTDriver_getInterface) Get_Interface, |
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#endif |
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(FTDriver_initFace) T1_Init_Face, |
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(FTDriver_doneFace) T1_Done_Face, |
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(FTDriver_initFace) T1_Init_Face, |
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(FTDriver_doneFace) T1_Done_Face, |
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#ifdef T1_CONFIG_OPTION_NO_AFM |
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(FTDriver_getKerning) 0, |
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(FTDriver_getKerning) 0, |
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#else |
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(FTDriver_getKerning) Get_Kerning, |
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(FTDriver_getKerning) Get_Kerning, |
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#endif |
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(FTDriver_initSize) T1_Init_Size, |
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(FTDriver_doneSize) T1_Done_Size, |
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(FTDriver_setCharSizes) Set_Char_Sizes, |
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(FTDriver_setPixelSizes) Set_Pixel_Sizes, |
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(FTDriver_initSize) T1_Init_Size, |
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(FTDriver_doneSize) T1_Done_Size, |
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(FTDriver_setCharSizes) Set_Char_Sizes, |
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(FTDriver_setPixelSizes)Set_Pixel_Sizes, |
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(FTDriver_initGlyphSlot) T1_Init_GlyphSlot, |
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(FTDriver_doneGlyphSlot) T1_Done_GlyphSlot, |
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(FTDriver_loadGlyph) T1_Load_Glyph, |
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(FTDriver_initGlyphSlot)T1_Init_GlyphSlot, |
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(FTDriver_doneGlyphSlot)T1_Done_GlyphSlot, |
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(FTDriver_loadGlyph) T1_Load_Glyph, |
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(FTDriver_getCharIndex) Get_Char_Index, |
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(FTDriver_getCharIndex) Get_Char_Index, |
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}; |
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/******************************************************************/ |
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/* */ |
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/* <Function> Get_FreeType_Driver_Interface */ |
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/* */ |
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/* <Description> */ |
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/* This function is used when compiling the TrueType driver */ |
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/* as a shared library (.DLL or .so). It will be used by the */ |
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/* high-level library of FreeType to retrieve the address of */ |
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/* the driver's generic interface. */ |
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/* */ |
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/* It shouldn't be implemented in a static build, as each */ |
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/* driver must have the same function as an exported entry */ |
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/* point. */ |
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/* */ |
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/* <Return> */ |
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/* address of TrueType's driver generic interface. The */ |
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/* forma-specific interface can then be retrieved through */ |
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/* the method interface->get_format_interface.. */ |
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/* */ |
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#ifdef FT_CONFIG_OPTION_DYNAMIC_DRIVERS |
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EXPORT_FUNC(FT_DriverInterface*) getDriverInterface( void ) |
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/*************************************************************************/ |
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/* */ |
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/* <Function> */ |
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/* getDriverInterface */ |
|
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/* */ |
|
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|
/* <Description> */ |
|
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|
|
/* This function is used when compiling the CID driver as a shared */ |
|
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|
/* library (`.DLL' or `.so'). It will be used by the high-level */ |
|
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|
|
/* library of FreeType to retrieve the address of the driver's */ |
|
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|
/* generic interface. */ |
|
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|
/* */ |
|
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|
|
/* It shouldn't be implemented in a static build, as each driver must */ |
|
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|
|
/* have the same function as an exported entry point. */ |
|
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/* */ |
|
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/* <Return> */ |
|
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|
|
/* The address of the CID's driver generic interface. The */ |
|
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|
|
/* format-specific interface can then be retrieved through the method */ |
|
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|
|
/* interface->get_format_interface. */ |
|
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|
|
/* */ |
|
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|
|
EXPORT_FUNC( FT_DriverInterface* ) getDriverInterface( void ) |
|
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|
|
{ |
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|
|
return &t1_driver_interface; |
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|
|
} |
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#endif /* FT_CONFIG_OPTION_DYNAMIC_DRIVERS */ |
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/* END */ |
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Werner Lemberg
25 years ago