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Diffstat (limited to 'nx-X11/extras/freetype2/src/truetype/ttobjs.c')
-rw-r--r--nx-X11/extras/freetype2/src/truetype/ttobjs.c901
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diff --git a/nx-X11/extras/freetype2/src/truetype/ttobjs.c b/nx-X11/extras/freetype2/src/truetype/ttobjs.c
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index 000000000..3914ba5da
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/truetype/ttobjs.c
@@ -0,0 +1,901 @@
+/***************************************************************************/
+/* */
+/* ttobjs.c */
+/* */
+/* Objects manager (body). */
+/* */
+/* Copyright 1996-2001, 2002, 2003, 2004 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_CALC_H
+#include FT_INTERNAL_STREAM_H
+#include FT_TRUETYPE_IDS_H
+#include FT_TRUETYPE_TAGS_H
+#include FT_INTERNAL_SFNT_H
+
+#include "ttgload.h"
+#include "ttpload.h"
+
+#include "tterrors.h"
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+#include "ttinterp.h"
+#endif
+
+#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
+#include FT_TRUETYPE_UNPATENTED_H
+#endif
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+#include "ttgxvar.h"
+#endif
+
+ /*************************************************************************/
+ /* */
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
+ /* messages during execution. */
+ /* */
+#undef FT_COMPONENT
+#define FT_COMPONENT trace_ttobjs
+
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+
+ /*************************************************************************/
+ /* */
+ /* GLYPH ZONE FUNCTIONS */
+ /* */
+ /*************************************************************************/
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_glyphzone_done */
+ /* */
+ /* <Description> */
+ /* Deallocates a glyph zone. */
+ /* */
+ /* <Input> */
+ /* zone :: A pointer to the target glyph zone. */
+ /* */
+ FT_LOCAL_DEF( void )
+ tt_glyphzone_done( TT_GlyphZone zone )
+ {
+ FT_Memory memory = zone->memory;
+
+
+ if ( memory )
+ {
+ FT_FREE( zone->contours );
+ FT_FREE( zone->tags );
+ FT_FREE( zone->cur );
+ FT_FREE( zone->org );
+
+ zone->max_points = zone->n_points = 0;
+ zone->max_contours = zone->n_contours = 0;
+ zone->memory = NULL;
+ }
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_glyphzone_new */
+ /* */
+ /* <Description> */
+ /* Allocates a new glyph zone. */
+ /* */
+ /* <Input> */
+ /* memory :: A handle to the current memory object. */
+ /* */
+ /* maxPoints :: The capacity of glyph zone in points. */
+ /* */
+ /* maxContours :: The capacity of glyph zone in contours. */
+ /* */
+ /* <Output> */
+ /* zone :: A pointer to the target glyph zone record. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ tt_glyphzone_new( FT_Memory memory,
+ FT_UShort maxPoints,
+ FT_Short maxContours,
+ TT_GlyphZone zone )
+ {
+ FT_Error error;
+
+
+ if ( maxPoints > 0 )
+ maxPoints += 2;
+
+ FT_MEM_ZERO( zone, sizeof ( *zone ) );
+ zone->memory = memory;
+
+ if ( FT_NEW_ARRAY( zone->org, maxPoints * 2 ) ||
+ FT_NEW_ARRAY( zone->cur, maxPoints * 2 ) ||
+ FT_NEW_ARRAY( zone->tags, maxPoints ) ||
+ FT_NEW_ARRAY( zone->contours, maxContours ) )
+ {
+ tt_glyphzone_done( zone );
+ }
+
+ return error;
+ }
+#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_face_init */
+ /* */
+ /* <Description> */
+ /* Initializes a given TrueType face object. */
+ /* */
+ /* <Input> */
+ /* stream :: The source font stream. */
+ /* */
+ /* face_index :: The index of the font face in the resource. */
+ /* */
+ /* num_params :: Number of additional generic parameters. Ignored. */
+ /* */
+ /* params :: Additional generic parameters. Ignored. */
+ /* */
+ /* <InOut> */
+ /* face :: The newly built face object. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ tt_face_init( FT_Stream stream,
+ FT_Face ttface, /* TT_Face */
+ FT_Int face_index,
+ FT_Int num_params,
+ FT_Parameter* params )
+ {
+ FT_Error error;
+ FT_Library library;
+ SFNT_Service sfnt;
+ TT_Face face = (TT_Face)ttface;
+
+
+ library = face->root.driver->root.library;
+ sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
+ if ( !sfnt )
+ goto Bad_Format;
+
+ /* create input stream from resource */
+ if ( FT_STREAM_SEEK( 0 ) )
+ goto Exit;
+
+ /* check that we have a valid TrueType file */
+ error = sfnt->init_face( stream, face, face_index, num_params, params );
+ if ( error )
+ goto Exit;
+
+ /* We must also be able to accept Mac/GX fonts, as well as OT ones */
+ if ( face->format_tag != 0x00010000L && /* MS fonts */
+ face->format_tag != TTAG_true ) /* Mac fonts */
+ {
+ FT_TRACE2(( "[not a valid TTF font]\n" ));
+ goto Bad_Format;
+ }
+
+ /* If we are performing a simple font format check, exit immediately */
+ if ( face_index < 0 )
+ return TT_Err_Ok;
+
+ /* Load font directory */
+ error = sfnt->load_face( stream, face, face_index, num_params, params );
+ if ( error )
+ goto Exit;
+
+ if ( face->root.face_flags & FT_FACE_FLAG_SCALABLE )
+ {
+
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+
+ if ( !face->root.internal->incremental_interface )
+ error = tt_face_load_loca( face, stream );
+ if ( !error )
+ error = tt_face_load_cvt( face, stream ) ||
+ tt_face_load_fpgm( face, stream );
+
+#else
+
+ if ( !error )
+ error = tt_face_load_loca( face, stream ) ||
+ tt_face_load_cvt( face, stream ) ||
+ tt_face_load_fpgm( face, stream );
+
+#endif
+
+ }
+
+#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
+
+ /* Determine whether unpatented hinting is to be used for this face. */
+ face->unpatented_hinting = FT_BOOL
+ ( library->debug_hooks[ FT_DEBUG_HOOK_UNPATENTED_HINTING ] != NULL );
+
+ {
+ int i;
+
+
+ for ( i = 0; i < num_params && !face->unpatented_hinting; i++ )
+ if ( params[i].tag == FT_PARAM_TAG_UNPATENTED_HINTING )
+ face->unpatented_hinting = TRUE;
+ }
+
+#endif /* TT_CONFIG_OPTION_UNPATENTED_HINTING */
+
+ /* initialize standard glyph loading routines */
+ TT_Init_Glyph_Loading( face );
+
+ Exit:
+ return error;
+
+ Bad_Format:
+ error = TT_Err_Unknown_File_Format;
+ goto Exit;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_face_done */
+ /* */
+ /* <Description> */
+ /* Finalizes a given face object. */
+ /* */
+ /* <Input> */
+ /* face :: A pointer to the face object to destroy. */
+ /* */
+ FT_LOCAL_DEF( void )
+ tt_face_done( FT_Face ttface ) /* TT_Face */
+ {
+ TT_Face face = (TT_Face)ttface;
+ FT_Memory memory = face->root.memory;
+ FT_Stream stream = face->root.stream;
+
+ SFNT_Service sfnt = (SFNT_Service)face->sfnt;
+
+
+ /* for `extended TrueType formats' (i.e. compressed versions) */
+ if ( face->extra.finalizer )
+ face->extra.finalizer( face->extra.data );
+
+ if ( sfnt )
+ sfnt->done_face( face );
+
+ /* freeing the locations table */
+ FT_FREE( face->glyph_locations );
+ face->num_locations = 0;
+
+ /* freeing the CVT */
+ FT_FREE( face->cvt );
+ face->cvt_size = 0;
+
+ /* freeing the programs */
+ FT_FRAME_RELEASE( face->font_program );
+ FT_FRAME_RELEASE( face->cvt_program );
+ face->font_program_size = 0;
+ face->cvt_program_size = 0;
+
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ tt_done_blend( memory, face->blend );
+ face->blend = NULL;
+#endif
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* SIZE FUNCTIONS */
+ /* */
+ /*************************************************************************/
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_size_init */
+ /* */
+ /* <Description> */
+ /* Initializes a new TrueType size object. */
+ /* */
+ /* <InOut> */
+ /* size :: A handle to the size object. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ tt_size_init( FT_Size ttsize ) /* TT_Size */
+ {
+ TT_Size size = (TT_Size)ttsize;
+ FT_Error error = TT_Err_Ok;
+
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+
+ TT_Face face = (TT_Face)size->root.face;
+ FT_Memory memory = face->root.memory;
+ FT_Int i;
+
+ TT_ExecContext exec;
+ FT_UShort n_twilight;
+ TT_MaxProfile* maxp = &face->max_profile;
+
+
+ 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 ( FT_NEW_ARRAY( size->function_defs, size->max_function_defs ) ||
+ FT_NEW_ARRAY( size->instruction_defs, size->max_instruction_defs ) ||
+ FT_NEW_ARRAY( size->cvt, size->cvt_size ) ||
+ FT_NEW_ARRAY( size->storage, size->storage_size ) )
+
+ goto Fail_Memory;
+
+ /* reserve twilight zone */
+ n_twilight = maxp->maxTwilightPoints;
+ error = tt_glyphzone_new( memory, n_twilight, 0, &size->twilight );
+ 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->root.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;
+ /* size objects used during debugging have their own context */
+ if ( !size->debug )
+ exec = TT_New_Context( face );
+
+ 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 = 0x10000L;
+ }
+
+ 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 );
+
+#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
+
+ size->ttmetrics.valid = FALSE;
+ return error;
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+
+ Fail_Exec:
+ if ( !size->debug )
+ TT_Done_Context( exec );
+
+ Fail_Memory:
+
+ tt_size_done( ttsize );
+ return error;
+
+#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
+
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_size_done */
+ /* */
+ /* <Description> */
+ /* The TrueType size object finalizer. */
+ /* */
+ /* <Input> */
+ /* size :: A handle to the target size object. */
+ /* */
+ FT_LOCAL_DEF( void )
+ tt_size_done( FT_Size ttsize ) /* TT_Size */
+ {
+ TT_Size size = (TT_Size)ttsize;
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+
+ 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;
+ }
+
+ FT_FREE( size->cvt );
+ size->cvt_size = 0;
+
+ /* free storage area */
+ FT_FREE( size->storage );
+ size->storage_size = 0;
+
+ /* twilight zone */
+ tt_glyphzone_done( &size->twilight );
+
+ FT_FREE( size->function_defs );
+ FT_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;
+
+#endif
+
+ size->ttmetrics.valid = FALSE;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* Reset_Outline_Size */
+ /* */
+ /* <Description> */
+ /* Resets a TrueType outline size when resolutions and character */
+ /* dimensions have been changed. */
+ /* */
+ /* <Input> */
+ /* size :: A handle to the target size object. */
+ /* */
+ static FT_Error
+ Reset_Outline_Size( TT_Size size )
+ {
+ TT_Face face;
+ FT_Error error = TT_Err_Ok;
+
+ FT_Size_Metrics* metrics;
+
+
+ if ( size->ttmetrics.valid )
+ return TT_Err_Ok;
+
+ face = (TT_Face)size->root.face;
+
+ metrics = &size->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 = 0x10000L;
+ 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 = 0x10000L;
+ }
+
+ /* Compute root ascender, descender, text height, and max_advance */
+ metrics->ascender =
+ FT_PIX_ROUND( FT_MulFix( face->root.ascender, metrics->y_scale ) );
+ metrics->descender =
+ FT_PIX_ROUND( FT_MulFix( face->root.descender, metrics->y_scale ) );
+ metrics->height =
+ FT_PIX_ROUND( FT_MulFix( face->root.height, metrics->y_scale ) );
+ metrics->max_advance =
+ FT_PIX_ROUND( FT_MulFix( face->root.max_advance_width,
+ metrics->x_scale ) );
+
+
+#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
+ /* set to `invalid' by default */
+ size->strike_index = 0xFFFFU;
+#endif
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+
+ {
+ TT_ExecContext exec;
+ FT_UInt i, j;
+
+
+ /* 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 < (FT_UInt)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 < (FT_UInt)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 End;
+
+ if ( !size->debug )
+ error = face->interpreter( exec );
+ }
+ else
+ error = TT_Err_Ok;
+
+ size->GS = exec->GS;
+ /* save default graphics state */
+
+ End:
+ TT_Save_Context( exec, size );
+
+ if ( !size->debug )
+ TT_Done_Context( exec );
+ /* debugging instances keep their context */
+ }
+
+#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
+
+ if ( !error )
+ size->ttmetrics.valid = TRUE;
+
+ return error;
+ }
+
+
+#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* Reset_SBit_Size */
+ /* */
+ /* <Description> */
+ /* Resets a TrueType sbit size when resolutions and character */
+ /* dimensions have been changed. */
+ /* */
+ /* <Input> */
+ /* size :: A handle to the target size object. */
+ /* */
+ static FT_Error
+ Reset_SBit_Size( TT_Size size )
+ {
+ TT_Face face;
+ FT_Error error = TT_Err_Ok;
+
+ FT_ULong strike_index;
+ FT_Size_Metrics* metrics;
+ FT_Size_Metrics* sbit_metrics;
+ SFNT_Service sfnt;
+
+
+ metrics = &size->metrics;
+
+ if ( size->strike_index != 0xFFFFU )
+ return TT_Err_Ok;
+
+ face = (TT_Face)size->root.face;
+ sfnt = (SFNT_Service)face->sfnt;
+
+ sbit_metrics = &size->strike_metrics;
+
+ error = sfnt->set_sbit_strike( face,
+ metrics->x_ppem, metrics->y_ppem,
+ &strike_index );
+
+ if ( !error )
+ {
+ TT_SBit_Strike strike = face->sbit_strikes + strike_index;
+
+
+ sbit_metrics->x_ppem = metrics->x_ppem;
+ sbit_metrics->y_ppem = metrics->y_ppem;
+#if 0
+ /*
+ * sbit_metrics->?_scale
+ * are not used now.
+ */
+ sbit_metrics->x_scale = 1 << 16;
+ sbit_metrics->y_scale = 1 << 16;
+#endif
+
+ sbit_metrics->ascender = strike->hori.ascender << 6;
+ sbit_metrics->descender = strike->hori.descender << 6;
+
+ /* XXX: Is this correct? */
+ sbit_metrics->height = sbit_metrics->ascender -
+ sbit_metrics->descender;
+
+ /* XXX: Is this correct? */
+ sbit_metrics->max_advance = ( strike->hori.min_origin_SB +
+ strike->hori.max_width +
+ strike->hori.min_advance_SB ) << 6;
+
+ size->strike_index = (FT_UInt)strike_index;
+ }
+ else
+ {
+ size->strike_index = 0xFFFFU;
+
+ sbit_metrics->x_ppem = 0;
+ sbit_metrics->y_ppem = 0;
+ sbit_metrics->ascender = 0;
+ sbit_metrics->descender = 0;
+ sbit_metrics->height = 0;
+ sbit_metrics->max_advance = 0;
+ }
+
+ return error;
+ }
+
+#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_size_reset */
+ /* */
+ /* <Description> */
+ /* Resets a TrueType size when resolutions and character dimensions */
+ /* have been changed. */
+ /* */
+ /* <Input> */
+ /* size :: A handle to the target size object. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ tt_size_reset( TT_Size size )
+ {
+ FT_Face face;
+ FT_Error error = TT_Err_Ok;
+
+
+ face = size->root.face;
+
+ if ( face->face_flags & FT_FACE_FLAG_SCALABLE )
+ {
+ if ( !size->ttmetrics.valid )
+ error = Reset_Outline_Size( size );
+
+ if ( error )
+ return error;
+ }
+
+#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
+
+ if ( face->face_flags & FT_FACE_FLAG_FIXED_SIZES )
+ {
+ if ( size->strike_index == 0xFFFFU )
+ error = Reset_SBit_Size( size );
+
+ if ( !error && !( face->face_flags & FT_FACE_FLAG_SCALABLE ) )
+ size->root.metrics = size->strike_metrics;
+ }
+
+#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
+
+ if ( face->face_flags & FT_FACE_FLAG_SCALABLE )
+ return TT_Err_Ok;
+ else
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_driver_init */
+ /* */
+ /* <Description> */
+ /* Initializes a given TrueType driver object. */
+ /* */
+ /* <Input> */
+ /* driver :: A handle to the target driver object. */
+ /* */
+ /* <Return> */
+ /* FreeType error code. 0 means success. */
+ /* */
+ FT_LOCAL_DEF( FT_Error )
+ tt_driver_init( FT_Module driver ) /* TT_Driver */
+ {
+ FT_Error error;
+
+
+ /* set `extra' in glyph loader */
+ error = FT_GlyphLoader_CreateExtra( FT_DRIVER( driver )->glyph_loader );
+
+ return error;
+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* tt_driver_done */
+ /* */
+ /* <Description> */
+ /* Finalizes a given TrueType driver. */
+ /* */
+ /* <Input> */
+ /* driver :: A handle to the target TrueType driver. */
+ /* */
+ FT_LOCAL_DEF( void )
+ tt_driver_done( FT_Module ttdriver ) /* TT_Driver */
+ {
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
+ TT_Driver driver = (TT_Driver)ttdriver;
+
+
+ /* destroy the execution context */
+ if ( driver->context )
+ {
+ TT_Destroy_Context( driver->context, driver->root.root.memory );
+ driver->context = NULL;
+ }
+#else
+ FT_UNUSED( ttdriver );
+#endif
+
+ }
+
+
+/* END */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 02:11:46 +0000