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54876
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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 (C) 1996-2019 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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49234
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#include <ft2build.h>
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#include FT_INTERNAL_DEBUG_H
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#include FT_INTERNAL_STREAM_H
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#include FT_TRUETYPE_TAGS_H
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#include FT_INTERNAL_SFNT_H
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#include FT_DRIVER_H
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#include "ttgload.h"
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#include "ttpload.h"
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#include "tterrors.h"
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#ifdef TT_USE_BYTECODE_INTERPRETER
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#include "ttinterp.h"
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#endif
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#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
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#include "ttgxvar.h"
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#endif
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54876
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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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49234
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#undef FT_COMPONENT
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54876
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#define FT_COMPONENT ttobjs
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49234
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#ifdef TT_USE_BYTECODE_INTERPRETER
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54876
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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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49234
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54876
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/**************************************************************************
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*
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* @Function:
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* tt_glyphzone_done
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*
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* @Description:
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* Deallocate a glyph zone.
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*
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* @Input:
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* zone ::
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* A pointer to the target glyph zone.
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*/
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49234
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FT_LOCAL_DEF( void )
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tt_glyphzone_done( TT_GlyphZone zone )
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{
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FT_Memory memory = zone->memory;
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if ( memory )
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{
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FT_FREE( zone->contours );
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FT_FREE( zone->tags );
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FT_FREE( zone->cur );
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FT_FREE( zone->org );
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FT_FREE( zone->orus );
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zone->max_points = zone->n_points = 0;
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zone->max_contours = zone->n_contours = 0;
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zone->memory = NULL;
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}
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}
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54876
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/**************************************************************************
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*
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* @Function:
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* tt_glyphzone_new
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*
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* @Description:
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* Allocate a new glyph zone.
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*
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* @Input:
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* memory ::
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* A handle to the current memory object.
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*
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* maxPoints ::
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* The capacity of glyph zone in points.
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*
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* maxContours ::
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* The capacity of glyph zone in contours.
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*
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* @Output:
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* zone ::
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* A pointer to the target glyph zone record.
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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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49234
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FT_LOCAL_DEF( FT_Error )
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tt_glyphzone_new( FT_Memory memory,
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FT_UShort maxPoints,
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FT_Short maxContours,
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TT_GlyphZone zone )
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{
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FT_Error error;
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FT_ZERO( zone );
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zone->memory = memory;
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if ( FT_NEW_ARRAY( zone->org, maxPoints ) ||
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FT_NEW_ARRAY( zone->cur, maxPoints ) ||
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FT_NEW_ARRAY( zone->orus, maxPoints ) ||
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FT_NEW_ARRAY( zone->tags, maxPoints ) ||
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FT_NEW_ARRAY( zone->contours, maxContours ) )
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{
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tt_glyphzone_done( zone );
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}
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else
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{
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zone->max_points = maxPoints;
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zone->max_contours = maxContours;
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}
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return error;
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}
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#endif /* TT_USE_BYTECODE_INTERPRETER */
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/* Compare the face with a list of well-known `tricky' fonts. */
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/* This list shall be expanded as we find more of them. */
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static FT_Bool
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tt_check_trickyness_family( FT_String* name )
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{
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#define TRICK_NAMES_MAX_CHARACTERS 19
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50479
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#define TRICK_NAMES_COUNT 26
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49234
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static const char trick_names[TRICK_NAMES_COUNT]
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[TRICK_NAMES_MAX_CHARACTERS + 1] =
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{
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/*
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PostScript names are given in brackets if they differ from the
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family name. The version numbers, together with the copyright or
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release year data, are taken from fonts available to the
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developers.
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Note that later versions of the fonts might be no longer tricky;
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for example, `MingLiU' version 7.00 (file `mingliu.ttc' from
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Windows 7) is an ordinary TTC with non-tricky subfonts.
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*/
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"cpop", /* dftt-p7.ttf; version 1.00, 1992 [DLJGyShoMedium] */
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"DFGirl-W6-WIN-BF", /* dftt-h6.ttf; version 1.00, 1993 */
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"DFGothic-EB", /* DynaLab Inc. 1992-1995 */
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"DFGyoSho-Lt", /* DynaLab Inc. 1992-1995 */
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50479
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"DFHei-Md-HK-BF", /* maybe DynaLab Inc. */
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49234
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"DFHSGothic-W5", /* DynaLab Inc. 1992-1995 */
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"DFHSMincho-W3", /* DynaLab Inc. 1992-1995 */
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"DFHSMincho-W7", /* DynaLab Inc. 1992-1995 */
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"DFKaiSho-SB", /* dfkaisb.ttf */
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"DFKaiShu",
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50479
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"DFKaiShu-Md-HK-BF", /* maybe DynaLab Inc. */
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49234
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"DFKai-SB", /* kaiu.ttf; version 3.00, 1998 [DFKaiShu-SB-Estd-BF] */
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50479
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"DFMing-Bd-HK-BF", /* maybe DynaLab Inc. */
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49234
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"DLC", /* dftt-m7.ttf; version 1.00, 1993 [DLCMingBold] */
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/* dftt-f5.ttf; version 1.00, 1993 [DLCFongSung] */
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"DLCHayMedium", /* dftt-b5.ttf; version 1.00, 1993 */
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"DLCHayBold", /* dftt-b7.ttf; version 1.00, 1993 */
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"DLCKaiMedium", /* dftt-k5.ttf; version 1.00, 1992 */
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"DLCLiShu", /* dftt-l5.ttf; version 1.00, 1992 */
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"DLCRoundBold", /* dftt-r7.ttf; version 1.00, 1993 */
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"HuaTianKaiTi?", /* htkt2.ttf */
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"HuaTianSongTi?", /* htst3.ttf */
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"Ming(for ISO10646)", /* hkscsiic.ttf; version 0.12, 2007 [Ming] */
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/* iicore.ttf; version 0.07, 2007 [Ming] */
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"MingLiU", /* mingliu.ttf */
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/* mingliu.ttc; version 3.21, 2001 */
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"MingMedium", /* dftt-m5.ttf; version 1.00, 1993 [DLCMingMedium] */
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"PMingLiU", /* mingliu.ttc; version 3.21, 2001 */
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"MingLi43", /* mingli.ttf; version 1.00, 1992 */
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};
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int nn;
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for ( nn = 0; nn < TRICK_NAMES_COUNT; nn++ )
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if ( ft_strstr( name, trick_names[nn] ) )
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return TRUE;
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return FALSE;
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}
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/* XXX: This function should be in the `sfnt' module. */
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/* Some PDF generators clear the checksums in the TrueType header table. */
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/* For example, Quartz ContextPDF clears all entries, or Bullzip PDF */
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/* Printer clears the entries for subsetted subtables. We thus have to */
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/* recalculate the checksums where necessary. */
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static FT_UInt32
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tt_synth_sfnt_checksum( FT_Stream stream,
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FT_ULong length )
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{
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FT_Error error;
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FT_UInt32 checksum = 0;
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FT_UInt i;
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if ( FT_FRAME_ENTER( length ) )
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return 0;
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for ( ; length > 3; length -= 4 )
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checksum += (FT_UInt32)FT_GET_ULONG();
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for ( i = 3; length > 0; length--, i-- )
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checksum += (FT_UInt32)FT_GET_BYTE() << ( i * 8 );
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FT_FRAME_EXIT();
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return checksum;
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}
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/* XXX: This function should be in the `sfnt' module. */
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static FT_ULong
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tt_get_sfnt_checksum( TT_Face face,
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FT_UShort i )
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{
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#if 0 /* if we believe the written value, use following part. */
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if ( face->dir_tables[i].CheckSum )
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return face->dir_tables[i].CheckSum;
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#endif
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if ( !face->goto_table )
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return 0;
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if ( face->goto_table( face,
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face->dir_tables[i].Tag,
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face->root.stream,
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NULL ) )
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return 0;
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return (FT_ULong)tt_synth_sfnt_checksum( face->root.stream,
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face->dir_tables[i].Length );
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}
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typedef struct tt_sfnt_id_rec_
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{
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FT_ULong CheckSum;
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FT_ULong Length;
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} tt_sfnt_id_rec;
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static FT_Bool
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tt_check_trickyness_sfnt_ids( TT_Face face )
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{
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#define TRICK_SFNT_IDS_PER_FACE 3
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50479
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#define TRICK_SFNT_IDS_NUM_FACES 29
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49234
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static const tt_sfnt_id_rec sfnt_id[TRICK_SFNT_IDS_NUM_FACES]
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[TRICK_SFNT_IDS_PER_FACE] = {
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#define TRICK_SFNT_ID_cvt 0
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#define TRICK_SFNT_ID_fpgm 1
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#define TRICK_SFNT_ID_prep 2
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{ /* MingLiU 1995 */
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{ 0x05BCF058UL, 0x000002E4UL }, /* cvt */
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{ 0x28233BF1UL, 0x000087C4UL }, /* fpgm */
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{ 0xA344A1EAUL, 0x000001E1UL } /* prep */
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},
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{ /* MingLiU 1996- */
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{ 0x05BCF058UL, 0x000002E4UL }, /* cvt */
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{ 0x28233BF1UL, 0x000087C4UL }, /* fpgm */
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{ 0xA344A1EBUL, 0x000001E1UL } /* prep */
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299 |
},
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300 |
{ /* DFGothic-EB */
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{ 0x12C3EBB2UL, 0x00000350UL }, /* cvt */
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{ 0xB680EE64UL, 0x000087A7UL }, /* fpgm */
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{ 0xCE939563UL, 0x00000758UL } /* prep */
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304 |
},
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305 |
{ /* DFGyoSho-Lt */
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306 |
{ 0x11E5EAD4UL, 0x00000350UL }, /* cvt */
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307 |
{ 0xCE5956E9UL, 0x0000BC85UL }, /* fpgm */
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{ 0x8272F416UL, 0x00000045UL } /* prep */
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309 |
},
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50479
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310 |
{ /* DFHei-Md-HK-BF */
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{ 0x1257EB46UL, 0x00000350UL }, /* cvt */
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312 |
{ 0xF699D160UL, 0x0000715FUL }, /* fpgm */
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{ 0xD222F568UL, 0x000003BCUL } /* prep */
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314 |
},
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49234
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315 |
{ /* DFHSGothic-W5 */
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{ 0x1262EB4EUL, 0x00000350UL }, /* cvt */
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317 |
{ 0xE86A5D64UL, 0x00007940UL }, /* fpgm */
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{ 0x7850F729UL, 0x000005FFUL } /* prep */
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319 |
},
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320 |
{ /* DFHSMincho-W3 */
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{ 0x122DEB0AUL, 0x00000350UL }, /* cvt */
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322 |
{ 0x3D16328AUL, 0x0000859BUL }, /* fpgm */
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323 |
{ 0xA93FC33BUL, 0x000002CBUL } /* prep */
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324 |
},
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325 |
{ /* DFHSMincho-W7 */
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{ 0x125FEB26UL, 0x00000350UL }, /* cvt */
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{ 0xA5ACC982UL, 0x00007EE1UL }, /* fpgm */
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328 |
{ 0x90999196UL, 0x0000041FUL } /* prep */
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329 |
},
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330 |
{ /* DFKaiShu */
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331 |
{ 0x11E5EAD4UL, 0x00000350UL }, /* cvt */
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332 |
{ 0x5A30CA3BUL, 0x00009063UL }, /* fpgm */
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{ 0x13A42602UL, 0x0000007EUL } /* prep */
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334 |
},
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335 |
{ /* DFKaiShu, variant */
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336 |
{ 0x11E5EAD4UL, 0x00000350UL }, /* cvt */
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337 |
{ 0xA6E78C01UL, 0x00008998UL }, /* fpgm */
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338 |
{ 0x13A42602UL, 0x0000007EUL } /* prep */
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339 |
},
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50479
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340 |
{ /* DFKaiShu-Md-HK-BF */
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341 |
{ 0x11E5EAD4UL, 0x00000360UL }, /* cvt */
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342 |
{ 0x9DB282B2UL, 0x0000C06EUL }, /* fpgm */
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343 |
{ 0x53E6D7CAUL, 0x00000082UL } /* prep */
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344 |
},
|
|
|
345 |
{ /* DFMing-Bd-HK-BF */
|
|
|
346 |
{ 0x1243EB18UL, 0x00000350UL }, /* cvt */
|
|
|
347 |
{ 0xBA0A8C30UL, 0x000074ADUL }, /* fpgm */
|
|
|
348 |
{ 0xF3D83409UL, 0x0000037BUL } /* prep */
|
|
|
349 |
},
|
|
49234
|
350 |
{ /* DLCLiShu */
|
|
|
351 |
{ 0x07DCF546UL, 0x00000308UL }, /* cvt */
|
|
|
352 |
{ 0x40FE7C90UL, 0x00008E2AUL }, /* fpgm */
|
|
|
353 |
{ 0x608174B5UL, 0x0000007AUL } /* prep */
|
|
|
354 |
},
|
|
|
355 |
{ /* DLCHayBold */
|
|
|
356 |
{ 0xEB891238UL, 0x00000308UL }, /* cvt */
|
|
|
357 |
{ 0xD2E4DCD4UL, 0x0000676FUL }, /* fpgm */
|
|
|
358 |
{ 0x8EA5F293UL, 0x000003B8UL } /* prep */
|
|
|
359 |
},
|
|
|
360 |
{ /* HuaTianKaiTi */
|
|
|
361 |
{ 0xFFFBFFFCUL, 0x00000008UL }, /* cvt */
|
|
|
362 |
{ 0x9C9E48B8UL, 0x0000BEA2UL }, /* fpgm */
|
|
|
363 |
{ 0x70020112UL, 0x00000008UL } /* prep */
|
|
|
364 |
},
|
|
|
365 |
{ /* HuaTianSongTi */
|
|
|
366 |
{ 0xFFFBFFFCUL, 0x00000008UL }, /* cvt */
|
|
|
367 |
{ 0x0A5A0483UL, 0x00017C39UL }, /* fpgm */
|
|
|
368 |
{ 0x70020112UL, 0x00000008UL } /* prep */
|
|
|
369 |
},
|
|
|
370 |
{ /* NEC fadpop7.ttf */
|
|
|
371 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
372 |
{ 0x40C92555UL, 0x000000E5UL }, /* fpgm */
|
|
|
373 |
{ 0xA39B58E3UL, 0x0000117CUL } /* prep */
|
|
|
374 |
},
|
|
|
375 |
{ /* NEC fadrei5.ttf */
|
|
|
376 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
377 |
{ 0x33C41652UL, 0x000000E5UL }, /* fpgm */
|
|
|
378 |
{ 0x26D6C52AUL, 0x00000F6AUL } /* prep */
|
|
|
379 |
},
|
|
|
380 |
{ /* NEC fangot7.ttf */
|
|
|
381 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
382 |
{ 0x6DB1651DUL, 0x0000019DUL }, /* fpgm */
|
|
|
383 |
{ 0x6C6E4B03UL, 0x00002492UL } /* prep */
|
|
|
384 |
},
|
|
|
385 |
{ /* NEC fangyo5.ttf */
|
|
|
386 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
387 |
{ 0x40C92555UL, 0x000000E5UL }, /* fpgm */
|
|
|
388 |
{ 0xDE51FAD0UL, 0x0000117CUL } /* prep */
|
|
|
389 |
},
|
|
|
390 |
{ /* NEC fankyo5.ttf */
|
|
|
391 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
392 |
{ 0x85E47664UL, 0x000000E5UL }, /* fpgm */
|
|
|
393 |
{ 0xA6C62831UL, 0x00001CAAUL } /* prep */
|
|
|
394 |
},
|
|
|
395 |
{ /* NEC fanrgo5.ttf */
|
|
|
396 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
397 |
{ 0x2D891CFDUL, 0x0000019DUL }, /* fpgm */
|
|
|
398 |
{ 0xA0604633UL, 0x00001DE8UL } /* prep */
|
|
|
399 |
},
|
|
|
400 |
{ /* NEC fangot5.ttc */
|
|
|
401 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
402 |
{ 0x40AA774CUL, 0x000001CBUL }, /* fpgm */
|
|
|
403 |
{ 0x9B5CAA96UL, 0x00001F9AUL } /* prep */
|
|
|
404 |
},
|
|
|
405 |
{ /* NEC fanmin3.ttc */
|
|
|
406 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
407 |
{ 0x0D3DE9CBUL, 0x00000141UL }, /* fpgm */
|
|
|
408 |
{ 0xD4127766UL, 0x00002280UL } /* prep */
|
|
|
409 |
},
|
|
|
410 |
{ /* NEC FA-Gothic, 1996 */
|
|
|
411 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
412 |
{ 0x4A692698UL, 0x000001F0UL }, /* fpgm */
|
|
|
413 |
{ 0x340D4346UL, 0x00001FCAUL } /* prep */
|
|
|
414 |
},
|
|
|
415 |
{ /* NEC FA-Minchou, 1996 */
|
|
|
416 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
417 |
{ 0xCD34C604UL, 0x00000166UL }, /* fpgm */
|
|
|
418 |
{ 0x6CF31046UL, 0x000022B0UL } /* prep */
|
|
|
419 |
},
|
|
|
420 |
{ /* NEC FA-RoundGothicB, 1996 */
|
|
|
421 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
422 |
{ 0x5DA75315UL, 0x0000019DUL }, /* fpgm */
|
|
|
423 |
{ 0x40745A5FUL, 0x000022E0UL } /* prep */
|
|
|
424 |
},
|
|
|
425 |
{ /* NEC FA-RoundGothicM, 1996 */
|
|
|
426 |
{ 0x00000000UL, 0x00000000UL }, /* cvt */
|
|
|
427 |
{ 0xF055FC48UL, 0x000001C2UL }, /* fpgm */
|
|
|
428 |
{ 0x3900DED3UL, 0x00001E18UL } /* prep */
|
|
|
429 |
},
|
|
|
430 |
{ /* MINGLI.TTF, 1992 */
|
|
|
431 |
{ 0x00170003UL, 0x00000060UL }, /* cvt */
|
|
|
432 |
{ 0xDBB4306EUL, 0x000058AAUL }, /* fpgm */
|
|
|
433 |
{ 0xD643482AUL, 0x00000035UL } /* prep */
|
|
|
434 |
}
|
|
|
435 |
};
|
|
|
436 |
|
|
|
437 |
FT_ULong checksum;
|
|
|
438 |
int num_matched_ids[TRICK_SFNT_IDS_NUM_FACES];
|
|
|
439 |
FT_Bool has_cvt, has_fpgm, has_prep;
|
|
|
440 |
FT_UShort i;
|
|
|
441 |
int j, k;
|
|
|
442 |
|
|
|
443 |
|
|
|
444 |
FT_MEM_SET( num_matched_ids, 0,
|
|
|
445 |
sizeof ( int ) * TRICK_SFNT_IDS_NUM_FACES );
|
|
|
446 |
has_cvt = FALSE;
|
|
|
447 |
has_fpgm = FALSE;
|
|
|
448 |
has_prep = FALSE;
|
|
|
449 |
|
|
|
450 |
for ( i = 0; i < face->num_tables; i++ )
|
|
|
451 |
{
|
|
|
452 |
checksum = 0;
|
|
|
453 |
|
|
|
454 |
switch( face->dir_tables[i].Tag )
|
|
|
455 |
{
|
|
|
456 |
case TTAG_cvt:
|
|
|
457 |
k = TRICK_SFNT_ID_cvt;
|
|
|
458 |
has_cvt = TRUE;
|
|
|
459 |
break;
|
|
|
460 |
|
|
|
461 |
case TTAG_fpgm:
|
|
|
462 |
k = TRICK_SFNT_ID_fpgm;
|
|
|
463 |
has_fpgm = TRUE;
|
|
|
464 |
break;
|
|
|
465 |
|
|
|
466 |
case TTAG_prep:
|
|
|
467 |
k = TRICK_SFNT_ID_prep;
|
|
|
468 |
has_prep = TRUE;
|
|
|
469 |
break;
|
|
|
470 |
|
|
|
471 |
default:
|
|
|
472 |
continue;
|
|
|
473 |
}
|
|
|
474 |
|
|
|
475 |
for ( j = 0; j < TRICK_SFNT_IDS_NUM_FACES; j++ )
|
|
|
476 |
if ( face->dir_tables[i].Length == sfnt_id[j][k].Length )
|
|
|
477 |
{
|
|
|
478 |
if ( !checksum )
|
|
|
479 |
checksum = tt_get_sfnt_checksum( face, i );
|
|
|
480 |
|
|
|
481 |
if ( sfnt_id[j][k].CheckSum == checksum )
|
|
|
482 |
num_matched_ids[j]++;
|
|
|
483 |
|
|
|
484 |
if ( num_matched_ids[j] == TRICK_SFNT_IDS_PER_FACE )
|
|
|
485 |
return TRUE;
|
|
|
486 |
}
|
|
|
487 |
}
|
|
|
488 |
|
|
|
489 |
for ( j = 0; j < TRICK_SFNT_IDS_NUM_FACES; j++ )
|
|
|
490 |
{
|
|
|
491 |
if ( !has_cvt && !sfnt_id[j][TRICK_SFNT_ID_cvt].Length )
|
|
|
492 |
num_matched_ids[j]++;
|
|
|
493 |
if ( !has_fpgm && !sfnt_id[j][TRICK_SFNT_ID_fpgm].Length )
|
|
|
494 |
num_matched_ids[j]++;
|
|
|
495 |
if ( !has_prep && !sfnt_id[j][TRICK_SFNT_ID_prep].Length )
|
|
|
496 |
num_matched_ids[j]++;
|
|
|
497 |
if ( num_matched_ids[j] == TRICK_SFNT_IDS_PER_FACE )
|
|
|
498 |
return TRUE;
|
|
|
499 |
}
|
|
|
500 |
|
|
|
501 |
return FALSE;
|
|
|
502 |
}
|
|
|
503 |
|
|
|
504 |
|
|
|
505 |
static FT_Bool
|
|
|
506 |
tt_check_trickyness( FT_Face face )
|
|
|
507 |
{
|
|
|
508 |
if ( !face )
|
|
|
509 |
return FALSE;
|
|
|
510 |
|
|
|
511 |
/* For first, check the face name for quick check. */
|
|
|
512 |
if ( face->family_name &&
|
|
|
513 |
tt_check_trickyness_family( face->family_name ) )
|
|
|
514 |
return TRUE;
|
|
|
515 |
|
|
|
516 |
/* Type42 fonts may lack `name' tables, we thus try to identify */
|
|
|
517 |
/* tricky fonts by checking the checksums of Type42-persistent */
|
|
|
518 |
/* sfnt tables (`cvt', `fpgm', and `prep'). */
|
|
|
519 |
if ( tt_check_trickyness_sfnt_ids( (TT_Face)face ) )
|
|
|
520 |
return TRUE;
|
|
|
521 |
|
|
|
522 |
return FALSE;
|
|
|
523 |
}
|
|
|
524 |
|
|
|
525 |
|
|
|
526 |
/* Check whether `.notdef' is the only glyph in the `loca' table. */
|
|
|
527 |
static FT_Bool
|
|
|
528 |
tt_check_single_notdef( FT_Face ttface )
|
|
|
529 |
{
|
|
|
530 |
FT_Bool result = FALSE;
|
|
|
531 |
|
|
|
532 |
TT_Face face = (TT_Face)ttface;
|
|
|
533 |
FT_UInt asize;
|
|
|
534 |
FT_ULong i;
|
|
|
535 |
FT_ULong glyph_index = 0;
|
|
|
536 |
FT_UInt count = 0;
|
|
|
537 |
|
|
|
538 |
|
|
|
539 |
for( i = 0; i < face->num_locations; i++ )
|
|
|
540 |
{
|
|
|
541 |
tt_face_get_location( face, i, &asize );
|
|
|
542 |
if ( asize > 0 )
|
|
|
543 |
{
|
|
|
544 |
count += 1;
|
|
|
545 |
if ( count > 1 )
|
|
|
546 |
break;
|
|
|
547 |
glyph_index = i;
|
|
|
548 |
}
|
|
|
549 |
}
|
|
|
550 |
|
|
|
551 |
/* Only have a single outline. */
|
|
|
552 |
if ( count == 1 )
|
|
|
553 |
{
|
|
|
554 |
if ( glyph_index == 0 )
|
|
|
555 |
result = TRUE;
|
|
|
556 |
else
|
|
|
557 |
{
|
|
|
558 |
/* FIXME: Need to test glyphname == .notdef ? */
|
|
|
559 |
FT_Error error;
|
|
|
560 |
char buf[8];
|
|
|
561 |
|
|
|
562 |
|
|
|
563 |
error = FT_Get_Glyph_Name( ttface, glyph_index, buf, 8 );
|
|
|
564 |
if ( !error &&
|
|
|
565 |
buf[0] == '.' && !ft_strncmp( buf, ".notdef", 8 ) )
|
|
|
566 |
result = TRUE;
|
|
|
567 |
}
|
|
|
568 |
}
|
|
|
569 |
|
|
|
570 |
return result;
|
|
|
571 |
}
|
|
|
572 |
|
|
|
573 |
|
|
54876
|
574 |
/**************************************************************************
|
|
|
575 |
*
|
|
|
576 |
* @Function:
|
|
|
577 |
* tt_face_init
|
|
|
578 |
*
|
|
|
579 |
* @Description:
|
|
|
580 |
* Initialize a given TrueType face object.
|
|
|
581 |
*
|
|
|
582 |
* @Input:
|
|
|
583 |
* stream ::
|
|
|
584 |
* The source font stream.
|
|
|
585 |
*
|
|
|
586 |
* face_index ::
|
|
|
587 |
* The index of the TrueType font, if we are opening a
|
|
|
588 |
* collection, in bits 0-15. The numbered instance
|
|
|
589 |
* index~+~1 of a GX (sub)font, if applicable, in bits
|
|
|
590 |
* 16-30.
|
|
|
591 |
*
|
|
|
592 |
* num_params ::
|
|
|
593 |
* Number of additional generic parameters. Ignored.
|
|
|
594 |
*
|
|
|
595 |
* params ::
|
|
|
596 |
* Additional generic parameters. Ignored.
|
|
|
597 |
*
|
|
|
598 |
* @InOut:
|
|
|
599 |
* face ::
|
|
|
600 |
* The newly built face object.
|
|
|
601 |
*
|
|
|
602 |
* @Return:
|
|
|
603 |
* FreeType error code. 0 means success.
|
|
|
604 |
*/
|
|
49234
|
605 |
FT_LOCAL_DEF( FT_Error )
|
|
|
606 |
tt_face_init( FT_Stream stream,
|
|
|
607 |
FT_Face ttface, /* TT_Face */
|
|
|
608 |
FT_Int face_index,
|
|
|
609 |
FT_Int num_params,
|
|
|
610 |
FT_Parameter* params )
|
|
|
611 |
{
|
|
|
612 |
FT_Error error;
|
|
|
613 |
FT_Library library;
|
|
|
614 |
SFNT_Service sfnt;
|
|
|
615 |
TT_Face face = (TT_Face)ttface;
|
|
|
616 |
|
|
|
617 |
|
|
|
618 |
FT_TRACE2(( "TTF driver\n" ));
|
|
|
619 |
|
|
|
620 |
library = ttface->driver->root.library;
|
|
|
621 |
|
|
|
622 |
sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
|
|
|
623 |
if ( !sfnt )
|
|
|
624 |
{
|
|
|
625 |
FT_ERROR(( "tt_face_init: cannot access `sfnt' module\n" ));
|
|
|
626 |
error = FT_THROW( Missing_Module );
|
|
|
627 |
goto Exit;
|
|
|
628 |
}
|
|
|
629 |
|
|
|
630 |
/* create input stream from resource */
|
|
|
631 |
if ( FT_STREAM_SEEK( 0 ) )
|
|
|
632 |
goto Exit;
|
|
|
633 |
|
|
|
634 |
/* check that we have a valid TrueType file */
|
|
|
635 |
FT_TRACE2(( " " ));
|
|
|
636 |
error = sfnt->init_face( stream, face, face_index, num_params, params );
|
|
|
637 |
|
|
|
638 |
/* Stream may have changed. */
|
|
|
639 |
stream = face->root.stream;
|
|
|
640 |
|
|
|
641 |
if ( error )
|
|
|
642 |
goto Exit;
|
|
|
643 |
|
|
|
644 |
/* We must also be able to accept Mac/GX fonts, as well as OT ones. */
|
|
|
645 |
/* The 0x00020000 tag is completely undocumented; some fonts from */
|
|
|
646 |
/* Arphic made for Chinese Windows 3.1 have this. */
|
|
|
647 |
if ( face->format_tag != 0x00010000L && /* MS fonts */
|
|
|
648 |
face->format_tag != 0x00020000L && /* CJK fonts for Win 3.1 */
|
|
|
649 |
face->format_tag != TTAG_true && /* Mac fonts */
|
|
|
650 |
face->format_tag != TTAG_0xA5kbd && /* `Keyboard.dfont' (legacy Mac OS X) */
|
|
|
651 |
face->format_tag != TTAG_0xA5lst ) /* `LastResort.dfont' (legacy Mac OS X) */
|
|
|
652 |
{
|
|
|
653 |
FT_TRACE2(( " not a TTF font\n" ));
|
|
|
654 |
goto Bad_Format;
|
|
|
655 |
}
|
|
|
656 |
|
|
|
657 |
#ifdef TT_USE_BYTECODE_INTERPRETER
|
|
|
658 |
ttface->face_flags |= FT_FACE_FLAG_HINTER;
|
|
|
659 |
#endif
|
|
|
660 |
|
|
|
661 |
/* If we are performing a simple font format check, exit immediately. */
|
|
|
662 |
if ( face_index < 0 )
|
|
|
663 |
return FT_Err_Ok;
|
|
|
664 |
|
|
|
665 |
/* Load font directory */
|
|
|
666 |
error = sfnt->load_face( stream, face, face_index, num_params, params );
|
|
|
667 |
if ( error )
|
|
|
668 |
goto Exit;
|
|
|
669 |
|
|
|
670 |
if ( tt_check_trickyness( ttface ) )
|
|
|
671 |
ttface->face_flags |= FT_FACE_FLAG_TRICKY;
|
|
|
672 |
|
|
|
673 |
error = tt_face_load_hdmx( face, stream );
|
|
|
674 |
if ( error )
|
|
|
675 |
goto Exit;
|
|
|
676 |
|
|
|
677 |
if ( FT_IS_SCALABLE( ttface ) )
|
|
|
678 |
{
|
|
|
679 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
680 |
if ( !ttface->internal->incremental_interface )
|
|
|
681 |
#endif
|
|
|
682 |
{
|
|
|
683 |
error = tt_face_load_loca( face, stream );
|
|
|
684 |
|
|
|
685 |
/* having a (non-zero) `glyf' table without */
|
|
|
686 |
/* a `loca' table is not valid */
|
|
|
687 |
if ( face->glyf_len && FT_ERR_EQ( error, Table_Missing ) )
|
|
|
688 |
goto Exit;
|
|
|
689 |
if ( error )
|
|
|
690 |
goto Exit;
|
|
|
691 |
}
|
|
|
692 |
|
|
|
693 |
/* `fpgm', `cvt', and `prep' are optional */
|
|
|
694 |
error = tt_face_load_cvt( face, stream );
|
|
|
695 |
if ( error && FT_ERR_NEQ( error, Table_Missing ) )
|
|
|
696 |
goto Exit;
|
|
|
697 |
|
|
|
698 |
error = tt_face_load_fpgm( face, stream );
|
|
|
699 |
if ( error && FT_ERR_NEQ( error, Table_Missing ) )
|
|
|
700 |
goto Exit;
|
|
|
701 |
|
|
|
702 |
error = tt_face_load_prep( face, stream );
|
|
|
703 |
if ( error && FT_ERR_NEQ( error, Table_Missing ) )
|
|
|
704 |
goto Exit;
|
|
|
705 |
|
|
|
706 |
/* Check the scalable flag based on `loca'. */
|
|
|
707 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
708 |
if ( !ttface->internal->incremental_interface )
|
|
|
709 |
#endif
|
|
|
710 |
{
|
|
|
711 |
if ( ttface->num_fixed_sizes &&
|
|
|
712 |
face->glyph_locations &&
|
|
|
713 |
tt_check_single_notdef( ttface ) )
|
|
|
714 |
{
|
|
|
715 |
FT_TRACE5(( "tt_face_init:"
|
|
|
716 |
" Only the `.notdef' glyph has an outline.\n"
|
|
|
717 |
" "
|
|
|
718 |
" Resetting scalable flag to FALSE.\n" ));
|
|
|
719 |
|
|
|
720 |
ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
|
|
|
721 |
}
|
|
|
722 |
}
|
|
|
723 |
}
|
|
|
724 |
|
|
|
725 |
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
|
|
|
726 |
|
|
|
727 |
{
|
|
|
728 |
FT_UInt instance_index = (FT_UInt)face_index >> 16;
|
|
|
729 |
|
|
|
730 |
|
|
|
731 |
if ( FT_HAS_MULTIPLE_MASTERS( ttface ) &&
|
|
|
732 |
instance_index > 0 )
|
|
|
733 |
{
|
|
|
734 |
error = TT_Set_Named_Instance( face, instance_index );
|
|
|
735 |
if ( error )
|
|
|
736 |
goto Exit;
|
|
|
737 |
|
|
|
738 |
tt_apply_mvar( face );
|
|
|
739 |
}
|
|
|
740 |
}
|
|
|
741 |
|
|
|
742 |
#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
|
|
|
743 |
|
|
|
744 |
/* initialize standard glyph loading routines */
|
|
|
745 |
TT_Init_Glyph_Loading( face );
|
|
|
746 |
|
|
|
747 |
Exit:
|
|
|
748 |
return error;
|
|
|
749 |
|
|
|
750 |
Bad_Format:
|
|
|
751 |
error = FT_THROW( Unknown_File_Format );
|
|
|
752 |
goto Exit;
|
|
|
753 |
}
|
|
|
754 |
|
|
|
755 |
|
|
54876
|
756 |
/**************************************************************************
|
|
|
757 |
*
|
|
|
758 |
* @Function:
|
|
|
759 |
* tt_face_done
|
|
|
760 |
*
|
|
|
761 |
* @Description:
|
|
|
762 |
* Finalize a given face object.
|
|
|
763 |
*
|
|
|
764 |
* @Input:
|
|
|
765 |
* face ::
|
|
|
766 |
* A pointer to the face object to destroy.
|
|
|
767 |
*/
|
|
49234
|
768 |
FT_LOCAL_DEF( void )
|
|
|
769 |
tt_face_done( FT_Face ttface ) /* TT_Face */
|
|
|
770 |
{
|
|
|
771 |
TT_Face face = (TT_Face)ttface;
|
|
|
772 |
FT_Memory memory;
|
|
|
773 |
FT_Stream stream;
|
|
|
774 |
SFNT_Service sfnt;
|
|
|
775 |
|
|
|
776 |
|
|
|
777 |
if ( !face )
|
|
|
778 |
return;
|
|
|
779 |
|
|
|
780 |
memory = ttface->memory;
|
|
|
781 |
stream = ttface->stream;
|
|
|
782 |
sfnt = (SFNT_Service)face->sfnt;
|
|
|
783 |
|
|
|
784 |
/* for `extended TrueType formats' (i.e. compressed versions) */
|
|
|
785 |
if ( face->extra.finalizer )
|
|
|
786 |
face->extra.finalizer( face->extra.data );
|
|
|
787 |
|
|
|
788 |
if ( sfnt )
|
|
|
789 |
sfnt->done_face( face );
|
|
|
790 |
|
|
|
791 |
/* freeing the locations table */
|
|
|
792 |
tt_face_done_loca( face );
|
|
|
793 |
|
|
|
794 |
tt_face_free_hdmx( face );
|
|
|
795 |
|
|
|
796 |
/* freeing the CVT */
|
|
|
797 |
FT_FREE( face->cvt );
|
|
|
798 |
face->cvt_size = 0;
|
|
|
799 |
|
|
|
800 |
/* freeing the programs */
|
|
|
801 |
FT_FRAME_RELEASE( face->font_program );
|
|
|
802 |
FT_FRAME_RELEASE( face->cvt_program );
|
|
|
803 |
face->font_program_size = 0;
|
|
|
804 |
face->cvt_program_size = 0;
|
|
|
805 |
|
|
|
806 |
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
|
|
|
807 |
tt_done_blend( face );
|
|
|
808 |
face->blend = NULL;
|
|
|
809 |
#endif
|
|
|
810 |
}
|
|
|
811 |
|
|
|
812 |
|
|
54876
|
813 |
/**************************************************************************
|
|
|
814 |
*
|
|
|
815 |
* SIZE FUNCTIONS
|
|
|
816 |
*
|
|
|
817 |
*/
|
|
49234
|
818 |
|
|
|
819 |
#ifdef TT_USE_BYTECODE_INTERPRETER
|
|
|
820 |
|
|
54876
|
821 |
/**************************************************************************
|
|
|
822 |
*
|
|
|
823 |
* @Function:
|
|
|
824 |
* tt_size_run_fpgm
|
|
|
825 |
*
|
|
|
826 |
* @Description:
|
|
|
827 |
* Run the font program.
|
|
|
828 |
*
|
|
|
829 |
* @Input:
|
|
|
830 |
* size ::
|
|
|
831 |
* A handle to the size object.
|
|
|
832 |
*
|
|
|
833 |
* pedantic ::
|
|
|
834 |
* Set if bytecode execution should be pedantic.
|
|
|
835 |
*
|
|
|
836 |
* @Return:
|
|
|
837 |
* FreeType error code. 0 means success.
|
|
|
838 |
*/
|
|
49234
|
839 |
FT_LOCAL_DEF( FT_Error )
|
|
|
840 |
tt_size_run_fpgm( TT_Size size,
|
|
|
841 |
FT_Bool pedantic )
|
|
|
842 |
{
|
|
|
843 |
TT_Face face = (TT_Face)size->root.face;
|
|
|
844 |
TT_ExecContext exec;
|
|
|
845 |
FT_Error error;
|
|
|
846 |
|
|
|
847 |
|
|
|
848 |
exec = size->context;
|
|
|
849 |
|
|
|
850 |
error = TT_Load_Context( exec, face, size );
|
|
|
851 |
if ( error )
|
|
|
852 |
return error;
|
|
|
853 |
|
|
|
854 |
exec->callTop = 0;
|
|
|
855 |
exec->top = 0;
|
|
|
856 |
|
|
|
857 |
exec->period = 64;
|
|
|
858 |
exec->phase = 0;
|
|
|
859 |
exec->threshold = 0;
|
|
|
860 |
|
|
|
861 |
exec->instruction_trap = FALSE;
|
|
|
862 |
exec->F_dot_P = 0x4000L;
|
|
|
863 |
|
|
|
864 |
exec->pedantic_hinting = pedantic;
|
|
|
865 |
|
|
|
866 |
{
|
|
|
867 |
FT_Size_Metrics* size_metrics = &exec->metrics;
|
|
|
868 |
TT_Size_Metrics* tt_metrics = &exec->tt_metrics;
|
|
|
869 |
|
|
|
870 |
|
|
|
871 |
size_metrics->x_ppem = 0;
|
|
|
872 |
size_metrics->y_ppem = 0;
|
|
|
873 |
size_metrics->x_scale = 0;
|
|
|
874 |
size_metrics->y_scale = 0;
|
|
|
875 |
|
|
|
876 |
tt_metrics->ppem = 0;
|
|
|
877 |
tt_metrics->scale = 0;
|
|
|
878 |
tt_metrics->ratio = 0x10000L;
|
|
|
879 |
}
|
|
|
880 |
|
|
|
881 |
/* allow font program execution */
|
|
|
882 |
TT_Set_CodeRange( exec,
|
|
|
883 |
tt_coderange_font,
|
|
|
884 |
face->font_program,
|
|
|
885 |
(FT_Long)face->font_program_size );
|
|
|
886 |
|
|
|
887 |
/* disable CVT and glyph programs coderange */
|
|
|
888 |
TT_Clear_CodeRange( exec, tt_coderange_cvt );
|
|
|
889 |
TT_Clear_CodeRange( exec, tt_coderange_glyph );
|
|
|
890 |
|
|
|
891 |
if ( face->font_program_size > 0 )
|
|
|
892 |
{
|
|
|
893 |
TT_Goto_CodeRange( exec, tt_coderange_font, 0 );
|
|
|
894 |
|
|
|
895 |
FT_TRACE4(( "Executing `fpgm' table.\n" ));
|
|
|
896 |
error = face->interpreter( exec );
|
|
|
897 |
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
|
898 |
if ( error )
|
|
|
899 |
FT_TRACE4(( " interpretation failed with error code 0x%x\n",
|
|
|
900 |
error ));
|
|
|
901 |
#endif
|
|
|
902 |
}
|
|
|
903 |
else
|
|
|
904 |
error = FT_Err_Ok;
|
|
|
905 |
|
|
|
906 |
size->bytecode_ready = error;
|
|
|
907 |
|
|
|
908 |
if ( !error )
|
|
|
909 |
TT_Save_Context( exec, size );
|
|
|
910 |
|
|
|
911 |
return error;
|
|
|
912 |
}
|
|
|
913 |
|
|
|
914 |
|
|
54876
|
915 |
/**************************************************************************
|
|
|
916 |
*
|
|
|
917 |
* @Function:
|
|
|
918 |
* tt_size_run_prep
|
|
|
919 |
*
|
|
|
920 |
* @Description:
|
|
|
921 |
* Run the control value program.
|
|
|
922 |
*
|
|
|
923 |
* @Input:
|
|
|
924 |
* size ::
|
|
|
925 |
* A handle to the size object.
|
|
|
926 |
*
|
|
|
927 |
* pedantic ::
|
|
|
928 |
* Set if bytecode execution should be pedantic.
|
|
|
929 |
*
|
|
|
930 |
* @Return:
|
|
|
931 |
* FreeType error code. 0 means success.
|
|
|
932 |
*/
|
|
49234
|
933 |
FT_LOCAL_DEF( FT_Error )
|
|
|
934 |
tt_size_run_prep( TT_Size size,
|
|
|
935 |
FT_Bool pedantic )
|
|
|
936 |
{
|
|
|
937 |
TT_Face face = (TT_Face)size->root.face;
|
|
|
938 |
TT_ExecContext exec;
|
|
|
939 |
FT_Error error;
|
|
|
940 |
|
|
|
941 |
|
|
|
942 |
exec = size->context;
|
|
|
943 |
|
|
|
944 |
error = TT_Load_Context( exec, face, size );
|
|
|
945 |
if ( error )
|
|
|
946 |
return error;
|
|
|
947 |
|
|
|
948 |
exec->callTop = 0;
|
|
|
949 |
exec->top = 0;
|
|
|
950 |
|
|
|
951 |
exec->instruction_trap = FALSE;
|
|
|
952 |
|
|
|
953 |
exec->pedantic_hinting = pedantic;
|
|
|
954 |
|
|
|
955 |
TT_Set_CodeRange( exec,
|
|
|
956 |
tt_coderange_cvt,
|
|
|
957 |
face->cvt_program,
|
|
|
958 |
(FT_Long)face->cvt_program_size );
|
|
|
959 |
|
|
|
960 |
TT_Clear_CodeRange( exec, tt_coderange_glyph );
|
|
|
961 |
|
|
|
962 |
if ( face->cvt_program_size > 0 )
|
|
|
963 |
{
|
|
|
964 |
TT_Goto_CodeRange( exec, tt_coderange_cvt, 0 );
|
|
|
965 |
|
|
|
966 |
FT_TRACE4(( "Executing `prep' table.\n" ));
|
|
|
967 |
error = face->interpreter( exec );
|
|
|
968 |
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
|
969 |
if ( error )
|
|
|
970 |
FT_TRACE4(( " interpretation failed with error code 0x%x\n",
|
|
|
971 |
error ));
|
|
|
972 |
#endif
|
|
|
973 |
}
|
|
|
974 |
else
|
|
|
975 |
error = FT_Err_Ok;
|
|
|
976 |
|
|
|
977 |
size->cvt_ready = error;
|
|
|
978 |
|
|
|
979 |
/* UNDOCUMENTED! The MS rasterizer doesn't allow the following */
|
|
|
980 |
/* graphics state variables to be modified by the CVT program. */
|
|
|
981 |
|
|
|
982 |
exec->GS.dualVector.x = 0x4000;
|
|
|
983 |
exec->GS.dualVector.y = 0;
|
|
|
984 |
exec->GS.projVector.x = 0x4000;
|
|
|
985 |
exec->GS.projVector.y = 0x0;
|
|
|
986 |
exec->GS.freeVector.x = 0x4000;
|
|
|
987 |
exec->GS.freeVector.y = 0x0;
|
|
|
988 |
|
|
|
989 |
exec->GS.rp0 = 0;
|
|
|
990 |
exec->GS.rp1 = 0;
|
|
|
991 |
exec->GS.rp2 = 0;
|
|
|
992 |
|
|
|
993 |
exec->GS.gep0 = 1;
|
|
|
994 |
exec->GS.gep1 = 1;
|
|
|
995 |
exec->GS.gep2 = 1;
|
|
|
996 |
|
|
|
997 |
exec->GS.loop = 1;
|
|
|
998 |
|
|
|
999 |
/* save as default graphics state */
|
|
|
1000 |
size->GS = exec->GS;
|
|
|
1001 |
|
|
|
1002 |
TT_Save_Context( exec, size );
|
|
|
1003 |
|
|
|
1004 |
return error;
|
|
|
1005 |
}
|
|
|
1006 |
|
|
|
1007 |
|
|
|
1008 |
static void
|
|
|
1009 |
tt_size_done_bytecode( FT_Size ftsize )
|
|
|
1010 |
{
|
|
|
1011 |
TT_Size size = (TT_Size)ftsize;
|
|
|
1012 |
TT_Face face = (TT_Face)ftsize->face;
|
|
|
1013 |
FT_Memory memory = face->root.memory;
|
|
|
1014 |
|
|
|
1015 |
if ( size->context )
|
|
|
1016 |
{
|
|
|
1017 |
TT_Done_Context( size->context );
|
|
|
1018 |
size->context = NULL;
|
|
|
1019 |
}
|
|
|
1020 |
|
|
|
1021 |
FT_FREE( size->cvt );
|
|
|
1022 |
size->cvt_size = 0;
|
|
|
1023 |
|
|
|
1024 |
/* free storage area */
|
|
|
1025 |
FT_FREE( size->storage );
|
|
|
1026 |
size->storage_size = 0;
|
|
|
1027 |
|
|
|
1028 |
/* twilight zone */
|
|
|
1029 |
tt_glyphzone_done( &size->twilight );
|
|
|
1030 |
|
|
|
1031 |
FT_FREE( size->function_defs );
|
|
|
1032 |
FT_FREE( size->instruction_defs );
|
|
|
1033 |
|
|
|
1034 |
size->num_function_defs = 0;
|
|
|
1035 |
size->max_function_defs = 0;
|
|
|
1036 |
size->num_instruction_defs = 0;
|
|
|
1037 |
size->max_instruction_defs = 0;
|
|
|
1038 |
|
|
|
1039 |
size->max_func = 0;
|
|
|
1040 |
size->max_ins = 0;
|
|
|
1041 |
|
|
|
1042 |
size->bytecode_ready = -1;
|
|
|
1043 |
size->cvt_ready = -1;
|
|
|
1044 |
}
|
|
|
1045 |
|
|
|
1046 |
|
|
|
1047 |
/* Initialize bytecode-related fields in the size object. */
|
|
|
1048 |
/* We do this only if bytecode interpretation is really needed. */
|
|
|
1049 |
static FT_Error
|
|
|
1050 |
tt_size_init_bytecode( FT_Size ftsize,
|
|
|
1051 |
FT_Bool pedantic )
|
|
|
1052 |
{
|
|
|
1053 |
FT_Error error;
|
|
|
1054 |
TT_Size size = (TT_Size)ftsize;
|
|
|
1055 |
TT_Face face = (TT_Face)ftsize->face;
|
|
|
1056 |
FT_Memory memory = face->root.memory;
|
|
|
1057 |
|
|
|
1058 |
FT_UShort n_twilight;
|
|
|
1059 |
TT_MaxProfile* maxp = &face->max_profile;
|
|
|
1060 |
|
|
|
1061 |
|
|
|
1062 |
/* clean up bytecode related data */
|
|
|
1063 |
FT_FREE( size->function_defs );
|
|
|
1064 |
FT_FREE( size->instruction_defs );
|
|
|
1065 |
FT_FREE( size->cvt );
|
|
|
1066 |
FT_FREE( size->storage );
|
|
|
1067 |
|
|
|
1068 |
if ( size->context )
|
|
|
1069 |
TT_Done_Context( size->context );
|
|
|
1070 |
tt_glyphzone_done( &size->twilight );
|
|
|
1071 |
|
|
|
1072 |
size->bytecode_ready = -1;
|
|
|
1073 |
size->cvt_ready = -1;
|
|
|
1074 |
|
|
|
1075 |
size->context = TT_New_Context( (TT_Driver)face->root.driver );
|
|
|
1076 |
|
|
|
1077 |
size->max_function_defs = maxp->maxFunctionDefs;
|
|
|
1078 |
size->max_instruction_defs = maxp->maxInstructionDefs;
|
|
|
1079 |
|
|
|
1080 |
size->num_function_defs = 0;
|
|
|
1081 |
size->num_instruction_defs = 0;
|
|
|
1082 |
|
|
|
1083 |
size->max_func = 0;
|
|
|
1084 |
size->max_ins = 0;
|
|
|
1085 |
|
|
|
1086 |
size->cvt_size = face->cvt_size;
|
|
|
1087 |
size->storage_size = maxp->maxStorage;
|
|
|
1088 |
|
|
|
1089 |
/* Set default metrics */
|
|
|
1090 |
{
|
|
|
1091 |
TT_Size_Metrics* tt_metrics = &size->ttmetrics;
|
|
|
1092 |
|
|
|
1093 |
|
|
|
1094 |
tt_metrics->rotated = FALSE;
|
|
|
1095 |
tt_metrics->stretched = FALSE;
|
|
|
1096 |
|
|
|
1097 |
/* set default engine compensation */
|
|
|
1098 |
tt_metrics->compensations[0] = 0; /* gray */
|
|
|
1099 |
tt_metrics->compensations[1] = 0; /* black */
|
|
|
1100 |
tt_metrics->compensations[2] = 0; /* white */
|
|
|
1101 |
tt_metrics->compensations[3] = 0; /* reserved */
|
|
|
1102 |
}
|
|
|
1103 |
|
|
|
1104 |
/* allocate function defs, instruction defs, cvt, and storage area */
|
|
|
1105 |
if ( FT_NEW_ARRAY( size->function_defs, size->max_function_defs ) ||
|
|
|
1106 |
FT_NEW_ARRAY( size->instruction_defs, size->max_instruction_defs ) ||
|
|
|
1107 |
FT_NEW_ARRAY( size->cvt, size->cvt_size ) ||
|
|
|
1108 |
FT_NEW_ARRAY( size->storage, size->storage_size ) )
|
|
|
1109 |
goto Exit;
|
|
|
1110 |
|
|
|
1111 |
/* reserve twilight zone */
|
|
|
1112 |
n_twilight = maxp->maxTwilightPoints;
|
|
|
1113 |
|
|
|
1114 |
/* there are 4 phantom points (do we need this?) */
|
|
|
1115 |
n_twilight += 4;
|
|
|
1116 |
|
|
|
1117 |
error = tt_glyphzone_new( memory, n_twilight, 0, &size->twilight );
|
|
|
1118 |
if ( error )
|
|
|
1119 |
goto Exit;
|
|
|
1120 |
|
|
|
1121 |
size->twilight.n_points = n_twilight;
|
|
|
1122 |
|
|
|
1123 |
size->GS = tt_default_graphics_state;
|
|
|
1124 |
|
|
|
1125 |
/* set `face->interpreter' according to the debug hook present */
|
|
|
1126 |
{
|
|
|
1127 |
FT_Library library = face->root.driver->root.library;
|
|
|
1128 |
|
|
|
1129 |
|
|
|
1130 |
face->interpreter = (TT_Interpreter)
|
|
|
1131 |
library->debug_hooks[FT_DEBUG_HOOK_TRUETYPE];
|
|
|
1132 |
if ( !face->interpreter )
|
|
|
1133 |
face->interpreter = (TT_Interpreter)TT_RunIns;
|
|
|
1134 |
}
|
|
|
1135 |
|
|
|
1136 |
/* Fine, now run the font program! */
|
|
|
1137 |
|
|
|
1138 |
/* In case of an error while executing `fpgm', we intentionally don't */
|
|
|
1139 |
/* clean up immediately – bugs in the `fpgm' are so fundamental that */
|
|
|
1140 |
/* all following hinting calls should fail. Additionally, `fpgm' is */
|
|
|
1141 |
/* to be executed just once; calling it again is completely useless */
|
|
|
1142 |
/* and might even lead to extremely slow behaviour if it is malformed */
|
|
|
1143 |
/* (containing an infinite loop, for example). */
|
|
|
1144 |
error = tt_size_run_fpgm( size, pedantic );
|
|
|
1145 |
return error;
|
|
|
1146 |
|
|
|
1147 |
Exit:
|
|
|
1148 |
if ( error )
|
|
|
1149 |
tt_size_done_bytecode( ftsize );
|
|
|
1150 |
|
|
|
1151 |
return error;
|
|
|
1152 |
}
|
|
|
1153 |
|
|
|
1154 |
|
|
|
1155 |
FT_LOCAL_DEF( FT_Error )
|
|
|
1156 |
tt_size_ready_bytecode( TT_Size size,
|
|
|
1157 |
FT_Bool pedantic )
|
|
|
1158 |
{
|
|
|
1159 |
FT_Error error = FT_Err_Ok;
|
|
|
1160 |
|
|
|
1161 |
|
|
|
1162 |
if ( size->bytecode_ready < 0 )
|
|
|
1163 |
error = tt_size_init_bytecode( (FT_Size)size, pedantic );
|
|
|
1164 |
else
|
|
|
1165 |
error = size->bytecode_ready;
|
|
|
1166 |
|
|
|
1167 |
if ( error )
|
|
|
1168 |
goto Exit;
|
|
|
1169 |
|
|
|
1170 |
/* rescale CVT when needed */
|
|
|
1171 |
if ( size->cvt_ready < 0 )
|
|
|
1172 |
{
|
|
|
1173 |
FT_UInt i;
|
|
|
1174 |
TT_Face face = (TT_Face)size->root.face;
|
|
|
1175 |
|
|
|
1176 |
|
|
54876
|
1177 |
/* Scale the cvt values to the new ppem. */
|
|
|
1178 |
/* By default, we use the y ppem value for scaling. */
|
|
|
1179 |
FT_TRACE6(( "CVT values:\n" ));
|
|
49234
|
1180 |
for ( i = 0; i < size->cvt_size; i++ )
|
|
54876
|
1181 |
{
|
|
49234
|
1182 |
size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale );
|
|
54876
|
1183 |
FT_TRACE6(( " %3d: %d (%f)\n",
|
|
|
1184 |
i, face->cvt[i], size->cvt[i] / 64.0 ));
|
|
|
1185 |
}
|
|
|
1186 |
FT_TRACE6(( "\n" ));
|
|
49234
|
1187 |
|
|
|
1188 |
/* all twilight points are originally zero */
|
|
|
1189 |
for ( i = 0; i < (FT_UInt)size->twilight.n_points; i++ )
|
|
|
1190 |
{
|
|
|
1191 |
size->twilight.org[i].x = 0;
|
|
|
1192 |
size->twilight.org[i].y = 0;
|
|
|
1193 |
size->twilight.cur[i].x = 0;
|
|
|
1194 |
size->twilight.cur[i].y = 0;
|
|
|
1195 |
}
|
|
|
1196 |
|
|
|
1197 |
/* clear storage area */
|
|
|
1198 |
for ( i = 0; i < (FT_UInt)size->storage_size; i++ )
|
|
|
1199 |
size->storage[i] = 0;
|
|
|
1200 |
|
|
|
1201 |
size->GS = tt_default_graphics_state;
|
|
|
1202 |
|
|
|
1203 |
error = tt_size_run_prep( size, pedantic );
|
|
|
1204 |
}
|
|
|
1205 |
else
|
|
|
1206 |
error = size->cvt_ready;
|
|
|
1207 |
|
|
|
1208 |
Exit:
|
|
|
1209 |
return error;
|
|
|
1210 |
}
|
|
|
1211 |
|
|
|
1212 |
#endif /* TT_USE_BYTECODE_INTERPRETER */
|
|
|
1213 |
|
|
|
1214 |
|
|
54876
|
1215 |
/**************************************************************************
|
|
|
1216 |
*
|
|
|
1217 |
* @Function:
|
|
|
1218 |
* tt_size_init
|
|
|
1219 |
*
|
|
|
1220 |
* @Description:
|
|
|
1221 |
* Initialize a new TrueType size object.
|
|
|
1222 |
*
|
|
|
1223 |
* @InOut:
|
|
|
1224 |
* size ::
|
|
|
1225 |
* A handle to the size object.
|
|
|
1226 |
*
|
|
|
1227 |
* @Return:
|
|
|
1228 |
* FreeType error code. 0 means success.
|
|
|
1229 |
*/
|
|
49234
|
1230 |
FT_LOCAL_DEF( FT_Error )
|
|
|
1231 |
tt_size_init( FT_Size ttsize ) /* TT_Size */
|
|
|
1232 |
{
|
|
|
1233 |
TT_Size size = (TT_Size)ttsize;
|
|
|
1234 |
FT_Error error = FT_Err_Ok;
|
|
|
1235 |
|
|
|
1236 |
|
|
|
1237 |
#ifdef TT_USE_BYTECODE_INTERPRETER
|
|
|
1238 |
size->bytecode_ready = -1;
|
|
|
1239 |
size->cvt_ready = -1;
|
|
|
1240 |
#endif
|
|
|
1241 |
|
|
|
1242 |
size->ttmetrics.valid = FALSE;
|
|
|
1243 |
size->strike_index = 0xFFFFFFFFUL;
|
|
|
1244 |
|
|
|
1245 |
return error;
|
|
|
1246 |
}
|
|
|
1247 |
|
|
|
1248 |
|
|
54876
|
1249 |
/**************************************************************************
|
|
|
1250 |
*
|
|
|
1251 |
* @Function:
|
|
|
1252 |
* tt_size_done
|
|
|
1253 |
*
|
|
|
1254 |
* @Description:
|
|
|
1255 |
* The TrueType size object finalizer.
|
|
|
1256 |
*
|
|
|
1257 |
* @Input:
|
|
|
1258 |
* size ::
|
|
|
1259 |
* A handle to the target size object.
|
|
|
1260 |
*/
|
|
49234
|
1261 |
FT_LOCAL_DEF( void )
|
|
|
1262 |
tt_size_done( FT_Size ttsize ) /* TT_Size */
|
|
|
1263 |
{
|
|
|
1264 |
TT_Size size = (TT_Size)ttsize;
|
|
|
1265 |
|
|
|
1266 |
|
|
|
1267 |
#ifdef TT_USE_BYTECODE_INTERPRETER
|
|
|
1268 |
tt_size_done_bytecode( ttsize );
|
|
|
1269 |
#endif
|
|
|
1270 |
|
|
|
1271 |
size->ttmetrics.valid = FALSE;
|
|
|
1272 |
}
|
|
|
1273 |
|
|
|
1274 |
|
|
54876
|
1275 |
/**************************************************************************
|
|
|
1276 |
*
|
|
|
1277 |
* @Function:
|
|
|
1278 |
* tt_size_reset
|
|
|
1279 |
*
|
|
|
1280 |
* @Description:
|
|
|
1281 |
* Reset a TrueType size when resolutions and character dimensions
|
|
|
1282 |
* have been changed.
|
|
|
1283 |
*
|
|
|
1284 |
* @Input:
|
|
|
1285 |
* size ::
|
|
|
1286 |
* A handle to the target size object.
|
|
|
1287 |
*
|
|
|
1288 |
* only_height ::
|
|
|
1289 |
* Only recompute ascender, descender, and height;
|
|
|
1290 |
* this flag is used for variation fonts where
|
|
|
1291 |
* `tt_size_reset' is used as an iterator function.
|
|
|
1292 |
*/
|
|
49234
|
1293 |
FT_LOCAL_DEF( FT_Error )
|
|
|
1294 |
tt_size_reset( TT_Size size,
|
|
|
1295 |
FT_Bool only_height )
|
|
|
1296 |
{
|
|
|
1297 |
TT_Face face;
|
|
|
1298 |
FT_Size_Metrics* size_metrics;
|
|
|
1299 |
|
|
|
1300 |
|
|
|
1301 |
face = (TT_Face)size->root.face;
|
|
|
1302 |
|
|
|
1303 |
/* nothing to do for CFF2 */
|
|
|
1304 |
if ( face->is_cff2 )
|
|
|
1305 |
return FT_Err_Ok;
|
|
|
1306 |
|
|
|
1307 |
size->ttmetrics.valid = FALSE;
|
|
|
1308 |
|
|
|
1309 |
size_metrics = &size->hinted_metrics;
|
|
|
1310 |
|
|
|
1311 |
/* copy the result from base layer */
|
|
|
1312 |
*size_metrics = size->root.metrics;
|
|
|
1313 |
|
|
|
1314 |
if ( size_metrics->x_ppem < 1 || size_metrics->y_ppem < 1 )
|
|
|
1315 |
return FT_THROW( Invalid_PPem );
|
|
|
1316 |
|
|
|
1317 |
/* This bit flag, if set, indicates that the ppems must be */
|
|
|
1318 |
/* rounded to integers. Nearly all TrueType fonts have this bit */
|
|
|
1319 |
/* set, as hinting won't work really well otherwise. */
|
|
|
1320 |
/* */
|
|
|
1321 |
if ( face->header.Flags & 8 )
|
|
|
1322 |
{
|
|
|
1323 |
/* the TT spec always asks for ROUND, not FLOOR or CEIL */
|
|
|
1324 |
size_metrics->ascender = FT_PIX_ROUND(
|
|
|
1325 |
FT_MulFix( face->root.ascender,
|
|
|
1326 |
size_metrics->y_scale ) );
|
|
|
1327 |
size_metrics->descender = FT_PIX_ROUND(
|
|
|
1328 |
FT_MulFix( face->root.descender,
|
|
|
1329 |
size_metrics->y_scale ) );
|
|
|
1330 |
size_metrics->height = FT_PIX_ROUND(
|
|
|
1331 |
FT_MulFix( face->root.height,
|
|
|
1332 |
size_metrics->y_scale ) );
|
|
|
1333 |
}
|
|
|
1334 |
|
|
|
1335 |
size->ttmetrics.valid = TRUE;
|
|
|
1336 |
|
|
|
1337 |
if ( only_height )
|
|
|
1338 |
{
|
|
|
1339 |
/* we must not recompute the scaling values here since */
|
|
|
1340 |
/* `tt_size_reset' was already called (with only_height = 0) */
|
|
|
1341 |
return FT_Err_Ok;
|
|
|
1342 |
}
|
|
|
1343 |
|
|
|
1344 |
if ( face->header.Flags & 8 )
|
|
|
1345 |
{
|
|
|
1346 |
/* base scaling values on integer ppem values, */
|
|
|
1347 |
/* as mandated by the TrueType specification */
|
|
|
1348 |
size_metrics->x_scale = FT_DivFix( size_metrics->x_ppem << 6,
|
|
|
1349 |
face->root.units_per_EM );
|
|
|
1350 |
size_metrics->y_scale = FT_DivFix( size_metrics->y_ppem << 6,
|
|
|
1351 |
face->root.units_per_EM );
|
|
|
1352 |
|
|
|
1353 |
size_metrics->max_advance = FT_PIX_ROUND(
|
|
|
1354 |
FT_MulFix( face->root.max_advance_width,
|
|
|
1355 |
size_metrics->x_scale ) );
|
|
|
1356 |
}
|
|
|
1357 |
|
|
|
1358 |
/* compute new transformation */
|
|
|
1359 |
if ( size_metrics->x_ppem >= size_metrics->y_ppem )
|
|
|
1360 |
{
|
|
|
1361 |
size->ttmetrics.scale = size_metrics->x_scale;
|
|
|
1362 |
size->ttmetrics.ppem = size_metrics->x_ppem;
|
|
|
1363 |
size->ttmetrics.x_ratio = 0x10000L;
|
|
|
1364 |
size->ttmetrics.y_ratio = FT_DivFix( size_metrics->y_ppem,
|
|
|
1365 |
size_metrics->x_ppem );
|
|
|
1366 |
}
|
|
|
1367 |
else
|
|
|
1368 |
{
|
|
|
1369 |
size->ttmetrics.scale = size_metrics->y_scale;
|
|
|
1370 |
size->ttmetrics.ppem = size_metrics->y_ppem;
|
|
|
1371 |
size->ttmetrics.x_ratio = FT_DivFix( size_metrics->x_ppem,
|
|
|
1372 |
size_metrics->y_ppem );
|
|
|
1373 |
size->ttmetrics.y_ratio = 0x10000L;
|
|
|
1374 |
}
|
|
|
1375 |
|
|
|
1376 |
size->metrics = size_metrics;
|
|
|
1377 |
|
|
|
1378 |
#ifdef TT_USE_BYTECODE_INTERPRETER
|
|
|
1379 |
size->cvt_ready = -1;
|
|
|
1380 |
#endif /* TT_USE_BYTECODE_INTERPRETER */
|
|
|
1381 |
|
|
|
1382 |
return FT_Err_Ok;
|
|
|
1383 |
}
|
|
|
1384 |
|
|
|
1385 |
|
|
54876
|
1386 |
/**************************************************************************
|
|
|
1387 |
*
|
|
|
1388 |
* @Function:
|
|
|
1389 |
* tt_driver_init
|
|
|
1390 |
*
|
|
|
1391 |
* @Description:
|
|
|
1392 |
* Initialize a given TrueType driver object.
|
|
|
1393 |
*
|
|
|
1394 |
* @Input:
|
|
|
1395 |
* driver ::
|
|
|
1396 |
* A handle to the target driver object.
|
|
|
1397 |
*
|
|
|
1398 |
* @Return:
|
|
|
1399 |
* FreeType error code. 0 means success.
|
|
|
1400 |
*/
|
|
49234
|
1401 |
FT_LOCAL_DEF( FT_Error )
|
|
|
1402 |
tt_driver_init( FT_Module ttdriver ) /* TT_Driver */
|
|
|
1403 |
{
|
|
|
1404 |
|
|
|
1405 |
#ifdef TT_USE_BYTECODE_INTERPRETER
|
|
|
1406 |
|
|
|
1407 |
TT_Driver driver = (TT_Driver)ttdriver;
|
|
|
1408 |
|
|
|
1409 |
driver->interpreter_version = TT_INTERPRETER_VERSION_35;
|
|
|
1410 |
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
|
|
|
1411 |
driver->interpreter_version = TT_INTERPRETER_VERSION_38;
|
|
|
1412 |
#endif
|
|
|
1413 |
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
|
|
|
1414 |
driver->interpreter_version = TT_INTERPRETER_VERSION_40;
|
|
|
1415 |
#endif
|
|
|
1416 |
|
|
|
1417 |
#else /* !TT_USE_BYTECODE_INTERPRETER */
|
|
|
1418 |
|
|
|
1419 |
FT_UNUSED( ttdriver );
|
|
|
1420 |
|
|
|
1421 |
#endif /* !TT_USE_BYTECODE_INTERPRETER */
|
|
|
1422 |
|
|
|
1423 |
return FT_Err_Ok;
|
|
|
1424 |
}
|
|
|
1425 |
|
|
|
1426 |
|
|
54876
|
1427 |
/**************************************************************************
|
|
|
1428 |
*
|
|
|
1429 |
* @Function:
|
|
|
1430 |
* tt_driver_done
|
|
|
1431 |
*
|
|
|
1432 |
* @Description:
|
|
|
1433 |
* Finalize a given TrueType driver.
|
|
|
1434 |
*
|
|
|
1435 |
* @Input:
|
|
|
1436 |
* driver ::
|
|
|
1437 |
* A handle to the target TrueType driver.
|
|
|
1438 |
*/
|
|
49234
|
1439 |
FT_LOCAL_DEF( void )
|
|
|
1440 |
tt_driver_done( FT_Module ttdriver ) /* TT_Driver */
|
|
|
1441 |
{
|
|
|
1442 |
FT_UNUSED( ttdriver );
|
|
|
1443 |
}
|
|
|
1444 |
|
|
|
1445 |
|
|
54876
|
1446 |
/**************************************************************************
|
|
|
1447 |
*
|
|
|
1448 |
* @Function:
|
|
|
1449 |
* tt_slot_init
|
|
|
1450 |
*
|
|
|
1451 |
* @Description:
|
|
|
1452 |
* Initialize a new slot object.
|
|
|
1453 |
*
|
|
|
1454 |
* @InOut:
|
|
|
1455 |
* slot ::
|
|
|
1456 |
* A handle to the slot object.
|
|
|
1457 |
*
|
|
|
1458 |
* @Return:
|
|
|
1459 |
* FreeType error code. 0 means success.
|
|
|
1460 |
*/
|
|
49234
|
1461 |
FT_LOCAL_DEF( FT_Error )
|
|
|
1462 |
tt_slot_init( FT_GlyphSlot slot )
|
|
|
1463 |
{
|
|
|
1464 |
return FT_GlyphLoader_CreateExtra( slot->internal->loader );
|
|
|
1465 |
}
|
|
|
1466 |
|
|
|
1467 |
|
|
|
1468 |
/* END */
|