887 lines
32 KiB
C
887 lines
32 KiB
C
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/***************************************************************************/
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/* */
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/* ttobjs.c */
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/* */
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/* Objects manager (body). */
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/* */
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/* Copyright 1996-1999 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 <freetype.h>
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#include <ftdebug.h>
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#include <ftcalc.h>
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#include <ftstream.h>
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#include <ttnameid.h>
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#include <sfnt.h>
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#include <ttpload.h>
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#include <ttinterp.h>
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#include <tterrors.h>
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/* required by tracing mode */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_ttobjs
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/*************************************************************************/
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/* */
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/* GLYPH ZONE FUNCTIONS */
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/* */
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Function> */
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/* TT_New_GlyphZone */
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/* */
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/* <Description> */
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/* Allocates a new glyph zone. */
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/* */
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/* <Input> */
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/* memory :: A handle to the current memory object. */
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/* */
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/* maxPoints :: The capacity of glyph zone in points. */
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/* */
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/* maxContours :: The capacity of glyph zone in contours. */
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/* */
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/* <InOut> */
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/* pts :: A pointer to the target glyph zone record. */
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/* */
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/* <Return> */
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/* TrueType error code. 0 means success. */
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/* */
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LOCAL_FUNC
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TT_Error TT_New_GlyphZone( FT_Memory memory,
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TT_GlyphZone* pts,
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TT_UShort maxPoints,
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TT_Short maxContours )
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{
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TT_Error error;
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if ( ALLOC( pts->org, maxPoints * 2 * sizeof ( TT_F26Dot6 ) ) ||
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ALLOC( pts->cur, maxPoints * 2 * sizeof ( TT_F26Dot6 ) ) ||
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ALLOC( pts->touch, maxPoints * sizeof ( TT_Byte ) ) ||
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ALLOC( pts->contours, maxContours * sizeof ( TT_UShort ) ) )
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return error;
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return TT_Err_Ok;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* TT_Done_GlyphZone */
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/* */
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/* <Description> */
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/* Deallocates a glyph zone. */
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/* */
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/* <Input> */
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/* memory :: A handle to the current memory object. */
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/* */
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/* pts :: A pointer to the target glyph zone record. */
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/* */
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/* <Return> */
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/* TrueType error code. 0 means success. */
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/* */
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LOCAL_FUNC
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TT_Error TT_Done_GlyphZone( FT_Memory memory,
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TT_GlyphZone* pts )
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{
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FREE( pts->contours );
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FREE( pts->touch );
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FREE( pts->cur );
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FREE( pts->org );
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return TT_Err_Ok;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* Get_Name */
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/* */
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/* <Description> */
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/* Returns a given ENGLISH name record in ASCII. */
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/* */
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/* <Input> */
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/* face :: A handle to the source face object. */
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/* */
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/* nameid :: The name id of the name record to return. */
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/* */
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/* <Return> */
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/* Char string. NULL if no name is present. */
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/* */
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static
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FT_String* Get_Name( TT_Face face,
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TT_UShort nameid )
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{
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FT_Memory memory = face->root.memory;
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TT_UShort n;
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TT_NameRec* rec;
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TT_Bool wide_chars = 1;
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/* first pass, look for a given name record */
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rec = face->name_table.names;
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for ( n = 0; n < face->name_table.numNameRecords; n++, rec++ )
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{
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if ( rec->nameID == nameid )
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{
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/* found the name - now create an ASCII string from it */
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TT_Bool found = 0;
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/* Test for Microsoft English language */
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if ( rec->platformID == TT_PLATFORM_MICROSOFT &&
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rec->encodingID < TT_MS_ID_UNICODE_CS &&
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(rec->languageID & 0x3FF) == 0x009 )
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found = 1;
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/* Test for Apple Unicode encoding */
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else if ( rec->platformID == TT_PLATFORM_APPLE_UNICODE )
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found = 1;
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/* Test for Apple Roman */
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else if ( rec->platformID == TT_PLATFORM_MACINTOSH &&
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rec->languageID == TT_MAC_ID_ROMAN )
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{
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found = 1;
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wide_chars = 0;
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}
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/* Found a Unicode Name */
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if ( found )
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{
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TT_String* string;
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TT_UInt len;
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if ( wide_chars )
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{
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TT_UInt m;
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len = (TT_UInt)rec->stringLength / 2;
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if ( MEM_Alloc( string, len + 1 ) )
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return NULL;
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for ( m = 0; m < len; m ++ )
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string[m] = rec->string[2*m + 1];
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}
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else
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{
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len = rec->stringLength;
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if ( MEM_Alloc( string, len + 1 ) )
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return NULL;
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MEM_Copy( string, rec->string, len );
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}
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string[len] = '\0';
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return string;
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}
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}
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}
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return NULL;
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}
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#undef LOAD_
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#define LOAD_(x) ( (error = sfnt->load_##x( face, stream )) != TT_Err_Ok )
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/*************************************************************************/
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/* */
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/* <Function> */
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/* TT_Init_Face */
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/* */
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/* <Description> */
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/* Initializes a given TrueType face object. */
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/* */
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/* <Input> */
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/* resource :: The source font resource. */
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/* face_index :: The index of the font face in the resource. */
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/* face :: The newly built face object. */
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/* */
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/* <Return> */
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/* TrueType error code. 0 means success. */
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/* */
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LOCAL_DEF
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TT_Error TT_Init_Face( FT_Stream stream,
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TT_Long face_index,
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TT_Face face )
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{
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TT_Error error;
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SFNT_Interface* sfnt;
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sfnt = (SFNT_Interface*)face->sfnt;
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if (!sfnt)
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{
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/* look-up the SFNT driver */
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FT_Driver sfnt_driver;
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sfnt_driver = FT_Get_Driver( face->root.driver->library, "sfnt" );
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if (!sfnt_driver)
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return FT_Err_Invalid_File_Format;
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sfnt = (SFNT_Interface*)(sfnt_driver->interface.format_interface);
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if (!sfnt)
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return FT_Err_Invalid_File_Format;
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face->sfnt = sfnt;
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face->goto_table = sfnt->goto_table;
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}
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/* create input stream from resource */
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if ( FILE_Seek(0) )
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goto Exit;
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/* Load collection directory if present, then font directory */
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error = sfnt->load_directory( face, stream, face_index );
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if ( error ) goto Exit;
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face->root.num_faces = face->ttc_header.DirCount;
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if ( face->root.num_faces < 1 )
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face->root.num_faces = 1;
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/* If we're performing a simple font format check, exit immediately */
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if ( face_index < 0 )
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return TT_Err_Ok;
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/* Load tables */
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if ( LOAD_( header ) ||
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LOAD_( max_profile ) ||
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(error = sfnt->load_metrics( face, stream, 0 )) != TT_Err_Ok ||
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/* load the `hhea' & `hmtx' tables at once */
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(error = sfnt->load_metrics( face, stream, 1 )) != TT_Err_Ok ||
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/* try to load the `vhea' & `vmtx' at once if present */
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LOAD_( charmaps ) ||
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LOAD_( names ) ||
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LOAD_( os2 ) ||
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LOAD_( psnames ) ||
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/* the optional tables */
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#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
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LOAD_( sbits ) ||
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#endif
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LOAD_( hdmx ) ||
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LOAD_( gasp ) ||
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LOAD_( kerning ) ||
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(error = TT_Load_Locations( face, stream )) != TT_Err_Ok ||
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(error = TT_Load_CVT ( face, stream )) != TT_Err_Ok ||
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(error = TT_Load_Programs ( face, stream )) != TT_Err_Ok )
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goto Exit;
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#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
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if ( ( error = TT_Extension_Create( face ) ) != TT_Err_Ok )
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goto Exit;
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#endif
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face->root.family_name = Get_Name( face, TT_NAME_ID_FONT_FAMILY );
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face->root.style_name = Get_Name( face, TT_NAME_ID_FONT_SUBFAMILY );
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Exit:
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return error;
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}
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#undef LOAD_
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/*************************************************************************/
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/* */
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/* <Function> */
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/* TT_Done_Face */
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/* */
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/* <Description> */
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/* Finalizes a given face object. */
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/* */
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/* <Input> */
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/* face :: A pointer to the face object to destroy. */
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/* */
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LOCAL_DEF
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void TT_Done_Face( TT_Face face )
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{
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TT_UShort n;
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FT_Memory memory = face->root.memory;
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SFNT_Interface* sfnt = face->sfnt;
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if (sfnt)
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{
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/* destroy the postscript names table if it is supported */
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if (sfnt->load_psnames)
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sfnt->free_psnames( face );
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/* destroy the embedded bitmaps table if it is supported */
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if (sfnt->load_sbits)
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sfnt->free_sbits( face );
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}
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/* freeing the kerning table */
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FREE( face->kern_pairs );
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face->num_kern_pairs = 0;
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/* freeing the collection table */
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FREE( face->ttc_header.TableDirectory );
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face->ttc_header.DirCount = 0;
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/* freeing table directory */
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FREE( face->dir_tables );
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face->num_tables = 0;
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/* freeing the locations table */
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FREE( face->glyph_locations );
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face->num_locations = 0;
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/* freeing the character mapping tables */
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if (sfnt && sfnt->load_charmaps )
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{
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for ( n = 0; n < face->num_charmaps; n++ )
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sfnt->free_charmap( face, &face->charmaps[n].cmap );
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}
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FREE( face->charmaps );
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face->num_charmaps = 0;
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FREE( face->root.charmaps );
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face->root.num_charmaps = 0;
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face->root.charmap = 0;
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/* freeing the CVT */
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FREE( face->cvt );
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face->cvt_size = 0;
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/* freeing the horizontal metrics */
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FREE( face->horizontal.long_metrics );
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FREE( face->horizontal.short_metrics );
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/* freeing the vertical ones, if any */
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if ( face->vertical_info )
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{
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FREE( face->vertical.long_metrics );
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FREE( face->vertical.short_metrics );
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face->vertical_info = 0;
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}
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/* freeing the programs */
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FREE( face->font_program );
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FREE( face->cvt_program );
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face->font_program_size = 0;
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face->cvt_program_size = 0;
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/* freeing the gasp table */
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FREE( face->gasp.gaspRanges );
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face->gasp.numRanges = 0;
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/* freeing the name table */
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sfnt->free_names( face );
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/* freeing the hdmx table */
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sfnt->free_hdmx( face );
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/* freeing family and style name */
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FREE( face->root.family_name );
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FREE( face->root.style_name );
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face->sfnt = 0;
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}
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/*************************************************************************/
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|
|
/* */
|
||
|
|
/* SIZE FUNCTIONS */
|
||
|
|
/* */
|
||
|
|
/*************************************************************************/
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* <Function> */
|
||
|
|
/* TT_Init_Size */
|
||
|
|
/* */
|
||
|
|
/* <Description> */
|
||
|
|
/* Initializes a new TrueType size object. */
|
||
|
|
/* */
|
||
|
|
/* <InOut> */
|
||
|
|
/* size :: A handle to the size object. */
|
||
|
|
/* */
|
||
|
|
/* <Return> */
|
||
|
|
/* TrueType error code. 0 means success. */
|
||
|
|
/* */
|
||
|
|
LOCAL_DEF
|
||
|
|
TT_Error TT_Init_Size( TT_Size size )
|
||
|
|
{
|
||
|
|
TT_Face face = (TT_Face)size->root.face;
|
||
|
|
FT_Memory memory = face->root.memory;
|
||
|
|
TT_Error error;
|
||
|
|
TT_Int i;
|
||
|
|
TT_UShort n_twilight;
|
||
|
|
|
||
|
|
TT_MaxProfile* maxp = &face->max_profile;
|
||
|
|
TT_ExecContext exec;
|
||
|
|
|
||
|
|
size->ttmetrics.valid = FALSE;
|
||
|
|
|
||
|
|
size->max_function_defs = maxp->maxFunctionDefs;
|
||
|
|
size->max_instruction_defs = maxp->maxInstructionDefs;
|
||
|
|
|
||
|
|
size->num_function_defs = 0;
|
||
|
|
size->num_instruction_defs = 0;
|
||
|
|
|
||
|
|
size->max_func = 0;
|
||
|
|
size->max_ins = 0;
|
||
|
|
|
||
|
|
size->cvt_size = face->cvt_size;
|
||
|
|
size->storage_size = maxp->maxStorage;
|
||
|
|
|
||
|
|
/* Set default metrics */
|
||
|
|
{
|
||
|
|
FT_Size_Metrics* metrics = &size->root.metrics;
|
||
|
|
TT_Size_Metrics* metrics2 = &size->ttmetrics;
|
||
|
|
|
||
|
|
metrics->x_ppem = 0;
|
||
|
|
metrics->y_ppem = 0;
|
||
|
|
|
||
|
|
metrics2->rotated = FALSE;
|
||
|
|
metrics2->stretched = FALSE;
|
||
|
|
|
||
|
|
/* set default compensation (all 0) */
|
||
|
|
for ( i = 0; i < 4; i++ )
|
||
|
|
metrics2->compensations[i] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* allocate function defs, instruction defs, cvt and storage area */
|
||
|
|
if ( ALLOC_ARRAY( size->function_defs,
|
||
|
|
size->max_function_defs,
|
||
|
|
TT_DefRecord ) ||
|
||
|
|
|
||
|
|
ALLOC_ARRAY( size->instruction_defs,
|
||
|
|
size->max_instruction_defs,
|
||
|
|
TT_DefRecord ) ||
|
||
|
|
|
||
|
|
ALLOC_ARRAY( size->cvt,
|
||
|
|
size->cvt_size, TT_Long ) ||
|
||
|
|
|
||
|
|
ALLOC_ARRAY( size->storage,
|
||
|
|
size->storage_size, TT_Long ) )
|
||
|
|
|
||
|
|
goto Fail_Memory;
|
||
|
|
|
||
|
|
/* reserve twilight zone */
|
||
|
|
n_twilight = maxp->maxTwilightPoints;
|
||
|
|
error = TT_New_GlyphZone( memory, &size->twilight, n_twilight, 0 );
|
||
|
|
if ( error )
|
||
|
|
goto Fail_Memory;
|
||
|
|
|
||
|
|
size->twilight.n_points = n_twilight;
|
||
|
|
|
||
|
|
/* set `face->interpreter' according to the debug hook present */
|
||
|
|
{
|
||
|
|
FT_Library library = face->root.driver->library;
|
||
|
|
|
||
|
|
face->interpreter = (TT_Interpreter)
|
||
|
|
library->debug_hooks[ FT_DEBUG_HOOK_TRUETYPE ];
|
||
|
|
if (!face->interpreter)
|
||
|
|
face->interpreter = (TT_Interpreter)TT_RunIns;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Fine, now execute the font program! */
|
||
|
|
exec = size->context;
|
||
|
|
if (!size->debug)
|
||
|
|
exec = TT_New_Context( face );
|
||
|
|
/* size objects used during debugging have their own context */
|
||
|
|
|
||
|
|
if ( !exec )
|
||
|
|
{
|
||
|
|
error = TT_Err_Could_Not_Find_Context;
|
||
|
|
goto Fail_Memory;
|
||
|
|
}
|
||
|
|
|
||
|
|
size->GS = tt_default_graphics_state;
|
||
|
|
TT_Load_Context( exec, face, size );
|
||
|
|
|
||
|
|
exec->callTop = 0;
|
||
|
|
exec->top = 0;
|
||
|
|
|
||
|
|
exec->period = 64;
|
||
|
|
exec->phase = 0;
|
||
|
|
exec->threshold = 0;
|
||
|
|
|
||
|
|
{
|
||
|
|
FT_Size_Metrics* metrics = &exec->metrics;
|
||
|
|
TT_Size_Metrics* tt_metrics = &exec->tt_metrics;
|
||
|
|
|
||
|
|
|
||
|
|
metrics->x_ppem = 0;
|
||
|
|
metrics->y_ppem = 0;
|
||
|
|
metrics->x_scale = 0;
|
||
|
|
metrics->y_scale = 0;
|
||
|
|
|
||
|
|
tt_metrics->ppem = 0;
|
||
|
|
tt_metrics->scale = 0;
|
||
|
|
tt_metrics->ratio = 0x10000;
|
||
|
|
}
|
||
|
|
|
||
|
|
exec->instruction_trap = FALSE;
|
||
|
|
|
||
|
|
exec->cvtSize = size->cvt_size;
|
||
|
|
exec->cvt = size->cvt;
|
||
|
|
|
||
|
|
exec->F_dot_P = 0x10000L;
|
||
|
|
|
||
|
|
/* allow font program execution */
|
||
|
|
TT_Set_CodeRange( exec,
|
||
|
|
tt_coderange_font,
|
||
|
|
face->font_program,
|
||
|
|
face->font_program_size );
|
||
|
|
|
||
|
|
/* disable CVT and glyph programs coderange */
|
||
|
|
TT_Clear_CodeRange( exec, tt_coderange_cvt );
|
||
|
|
TT_Clear_CodeRange( exec, tt_coderange_glyph );
|
||
|
|
|
||
|
|
if ( face->font_program_size > 0 )
|
||
|
|
{
|
||
|
|
error = TT_Goto_CodeRange( exec, tt_coderange_font, 0 );
|
||
|
|
if ( !error )
|
||
|
|
error = face->interpreter( exec );
|
||
|
|
|
||
|
|
if ( error )
|
||
|
|
goto Fail_Exec;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
error = TT_Err_Ok;
|
||
|
|
|
||
|
|
TT_Save_Context( exec, size );
|
||
|
|
|
||
|
|
if ( !size->debug )
|
||
|
|
TT_Done_Context( exec );
|
||
|
|
|
||
|
|
size->ttmetrics.valid = FALSE;
|
||
|
|
return error;
|
||
|
|
|
||
|
|
Fail_Exec:
|
||
|
|
if ( !size->debug )
|
||
|
|
TT_Done_Context( exec );
|
||
|
|
|
||
|
|
Fail_Memory:
|
||
|
|
TT_Done_Size( size );
|
||
|
|
return error;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* <Function> */
|
||
|
|
/* TT_Done_Size */
|
||
|
|
/* */
|
||
|
|
/* <Description> */
|
||
|
|
/* The TrueType size object finalizer. */
|
||
|
|
/* */
|
||
|
|
/* <Input> */
|
||
|
|
/* size :: A handle to the target size object. */
|
||
|
|
/* */
|
||
|
|
LOCAL_FUNC
|
||
|
|
void TT_Done_Size( TT_Size size )
|
||
|
|
{
|
||
|
|
FT_Memory memory = size->root.face->memory;
|
||
|
|
|
||
|
|
|
||
|
|
if ( size->debug )
|
||
|
|
{
|
||
|
|
/* the debug context must be deleted by the debugger itself */
|
||
|
|
size->context = NULL;
|
||
|
|
size->debug = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
FREE( size->cvt );
|
||
|
|
size->cvt_size = 0;
|
||
|
|
|
||
|
|
/* free storage area */
|
||
|
|
FREE( size->storage );
|
||
|
|
size->storage_size = 0;
|
||
|
|
|
||
|
|
/* twilight zone */
|
||
|
|
TT_Done_GlyphZone( memory, &size->twilight );
|
||
|
|
|
||
|
|
FREE( size->function_defs );
|
||
|
|
FREE( size->instruction_defs );
|
||
|
|
size->num_function_defs = 0;
|
||
|
|
size->max_function_defs = 0;
|
||
|
|
size->num_instruction_defs = 0;
|
||
|
|
size->max_instruction_defs = 0;
|
||
|
|
|
||
|
|
size->max_func = 0;
|
||
|
|
size->max_ins = 0;
|
||
|
|
|
||
|
|
size->ttmetrics.valid = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* <Function> */
|
||
|
|
/* TT_Reset_Size */
|
||
|
|
/* */
|
||
|
|
/* <Description> */
|
||
|
|
/* Resets a TrueType size when resolutions and character dimensions */
|
||
|
|
/* have been changed. */
|
||
|
|
/* */
|
||
|
|
/* <Input> */
|
||
|
|
/* size :: A handle to the target size object. */
|
||
|
|
/* */
|
||
|
|
LOCAL_DEF
|
||
|
|
TT_Error TT_Reset_Size( TT_Size size )
|
||
|
|
{
|
||
|
|
TT_ExecContext exec;
|
||
|
|
TT_Error error;
|
||
|
|
TT_UShort i, j;
|
||
|
|
TT_Face face;
|
||
|
|
|
||
|
|
FT_Size_Metrics* metrics;
|
||
|
|
|
||
|
|
if ( size->ttmetrics.valid )
|
||
|
|
return TT_Err_Ok;
|
||
|
|
|
||
|
|
face = (TT_Face)size->root.face;
|
||
|
|
|
||
|
|
metrics = &size->root.metrics;
|
||
|
|
|
||
|
|
if ( metrics->x_ppem < 1 || metrics->y_ppem < 1 )
|
||
|
|
return TT_Err_Invalid_PPem;
|
||
|
|
|
||
|
|
/* compute new transformation */
|
||
|
|
if ( metrics->x_ppem >= metrics->y_ppem )
|
||
|
|
{
|
||
|
|
size->ttmetrics.scale = metrics->x_scale;
|
||
|
|
size->ttmetrics.ppem = metrics->x_ppem;
|
||
|
|
size->ttmetrics.x_ratio = 0x10000;
|
||
|
|
size->ttmetrics.y_ratio = FT_MulDiv( metrics->y_ppem,
|
||
|
|
0x10000L,
|
||
|
|
metrics->x_ppem );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
size->ttmetrics.scale = metrics->y_scale;
|
||
|
|
size->ttmetrics.ppem = metrics->y_ppem;
|
||
|
|
size->ttmetrics.x_ratio = FT_MulDiv( metrics->x_ppem,
|
||
|
|
0x10000L,
|
||
|
|
metrics->y_ppem );
|
||
|
|
size->ttmetrics.y_ratio = 0x10000;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Compute root ascender, descender, test height, and max_advance */
|
||
|
|
metrics->ascender = ( FT_MulFix( face->root.ascender,
|
||
|
|
metrics->y_scale ) + 32 ) & -64;
|
||
|
|
|
||
|
|
metrics->descender = ( FT_MulFix( face->root.descender,
|
||
|
|
metrics->y_scale ) + 32 ) & -64;
|
||
|
|
|
||
|
|
metrics->height = ( FT_MulFix( face->root.height,
|
||
|
|
metrics->y_scale ) + 32 ) & -64;
|
||
|
|
|
||
|
|
metrics->max_advance = ( FT_MulFix( face->root.max_advance_width,
|
||
|
|
metrics->x_scale ) + 32 ) & -64;
|
||
|
|
|
||
|
|
/* Scale the cvt values to the new ppem. */
|
||
|
|
/* We use by default the y ppem to scale the CVT. */
|
||
|
|
|
||
|
|
for ( i = 0; i < size->cvt_size; i++ )
|
||
|
|
size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale );
|
||
|
|
|
||
|
|
/* All twilight points are originally zero */
|
||
|
|
for ( j = 0; j < size->twilight.n_points; j++ )
|
||
|
|
{
|
||
|
|
size->twilight.org[j].x = 0;
|
||
|
|
size->twilight.org[j].y = 0;
|
||
|
|
size->twilight.cur[j].x = 0;
|
||
|
|
size->twilight.cur[j].y = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* clear storage area */
|
||
|
|
for ( i = 0; i < size->storage_size; i++ )
|
||
|
|
size->storage[i] = 0;
|
||
|
|
|
||
|
|
size->GS = tt_default_graphics_state;
|
||
|
|
|
||
|
|
/* get execution context and run prep program */
|
||
|
|
if ( size->debug )
|
||
|
|
exec = size->context;
|
||
|
|
else
|
||
|
|
exec = TT_New_Context( face );
|
||
|
|
/* debugging instances have their own context */
|
||
|
|
|
||
|
|
if ( !exec )
|
||
|
|
return TT_Err_Could_Not_Find_Context;
|
||
|
|
|
||
|
|
TT_Load_Context( exec, face, size );
|
||
|
|
|
||
|
|
TT_Set_CodeRange( exec,
|
||
|
|
tt_coderange_cvt,
|
||
|
|
face->cvt_program,
|
||
|
|
face->cvt_program_size );
|
||
|
|
|
||
|
|
TT_Clear_CodeRange( exec, tt_coderange_glyph );
|
||
|
|
|
||
|
|
exec->instruction_trap = FALSE;
|
||
|
|
|
||
|
|
exec->top = 0;
|
||
|
|
exec->callTop = 0;
|
||
|
|
|
||
|
|
if ( face->cvt_program_size > 0 )
|
||
|
|
{
|
||
|
|
error = TT_Goto_CodeRange( exec, tt_coderange_cvt, 0 );
|
||
|
|
if ( error )
|
||
|
|
goto Fin;
|
||
|
|
|
||
|
|
if ( !size->debug )
|
||
|
|
error = face->interpreter( exec );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
error = TT_Err_Ok;
|
||
|
|
|
||
|
|
size->GS = exec->GS;
|
||
|
|
/* save default graphics state */
|
||
|
|
|
||
|
|
Fin:
|
||
|
|
TT_Save_Context( exec, size );
|
||
|
|
|
||
|
|
if ( !size->debug )
|
||
|
|
TT_Done_Context( exec );
|
||
|
|
/* debugging instances keep their context */
|
||
|
|
|
||
|
|
if ( !error )
|
||
|
|
size->ttmetrics.valid = TRUE;
|
||
|
|
|
||
|
|
return error;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* <Function> */
|
||
|
|
/* TT_Init_GlyphSlot */
|
||
|
|
/* */
|
||
|
|
/* <Description> */
|
||
|
|
/* The TrueType glyph slot initializer. */
|
||
|
|
/* */
|
||
|
|
/* <Input> */
|
||
|
|
/* slot :: The glyph record to build. */
|
||
|
|
/* */
|
||
|
|
/* <Output> */
|
||
|
|
/* TrueType error code. 0 means success. */
|
||
|
|
/* */
|
||
|
|
LOCAL_FUNC
|
||
|
|
TT_Error TT_Init_GlyphSlot( TT_GlyphSlot slot )
|
||
|
|
{
|
||
|
|
/* allocate the outline space */
|
||
|
|
FT_Face face = slot->face;
|
||
|
|
FT_Library library = face->driver->library;
|
||
|
|
|
||
|
|
|
||
|
|
FT_TRACE4(( "TT.Init_GlyphSlot: Creating outline maxp = %d, maxc = %d\n",
|
||
|
|
face->max_points, face->max_contours ));
|
||
|
|
|
||
|
|
return FT_New_Outline( library,
|
||
|
|
face->max_points + 2,
|
||
|
|
face->max_contours,
|
||
|
|
&slot->outline );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* <Function> */
|
||
|
|
/* TT_Done_GlyphSlot */
|
||
|
|
/* */
|
||
|
|
/* <Description> */
|
||
|
|
/* The TrueType glyph slot finalizer. */
|
||
|
|
/* */
|
||
|
|
/* <Input> */
|
||
|
|
/* slot :: A handle to the glyph slot object. */
|
||
|
|
/* */
|
||
|
|
LOCAL_FUNC
|
||
|
|
void TT_Done_GlyphSlot( TT_GlyphSlot slot )
|
||
|
|
{
|
||
|
|
FT_Library library = slot->face->driver->library;
|
||
|
|
|
||
|
|
|
||
|
|
FT_Done_Outline( library, &slot->outline );
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* <Function> */
|
||
|
|
/* TT_Init_Driver */
|
||
|
|
/* */
|
||
|
|
/* <Description> */
|
||
|
|
/* Initializes a given TrueType driver object. */
|
||
|
|
/* */
|
||
|
|
/* <Input> */
|
||
|
|
/* driver :: A handle to the target driver object. */
|
||
|
|
/* */
|
||
|
|
/* <Return> */
|
||
|
|
/* TrueType error code. 0 means success. */
|
||
|
|
/* */
|
||
|
|
LOCAL_FUNC
|
||
|
|
TT_Error TT_Init_Driver( TT_Driver driver )
|
||
|
|
{
|
||
|
|
/* init extension registry if needed */
|
||
|
|
#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
|
||
|
|
return TT_Init_Extensions( driver );
|
||
|
|
#else
|
||
|
|
UNUSED( driver );
|
||
|
|
|
||
|
|
return TT_Err_Ok;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* <Function> */
|
||
|
|
/* TT_Done_Driver */
|
||
|
|
/* */
|
||
|
|
/* <Description> */
|
||
|
|
/* Finalizes a given TrueType driver. */
|
||
|
|
/* */
|
||
|
|
/* <Input> */
|
||
|
|
/* driver :: A handle to the target TrueType driver. */
|
||
|
|
/* */
|
||
|
|
LOCAL_FUNC
|
||
|
|
void TT_Done_Driver( TT_Driver driver )
|
||
|
|
{
|
||
|
|
/* destroy extensions registry if needed */
|
||
|
|
#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
|
||
|
|
TT_Done_Extensions( driver );
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* destroy the execution context */
|
||
|
|
if ( driver->context )
|
||
|
|
{
|
||
|
|
TT_Destroy_Context( driver->context, driver->root.memory );
|
||
|
|
driver->context = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* END */
|