+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftobjs.c */
-/* */
-/* The FreeType private base classes (body). */
-/* */
-/* Copyright 1996-2001 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_LIST_H
-#include FT_INTERNAL_OBJECTS_H
-#include FT_INTERNAL_DEBUG_H
-#include FT_INTERNAL_STREAM_H
-#include FT_TRUETYPE_TABLES_H
-
-#include <string.h> /* for strcmp() */
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** M E M O R Y ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
- /*************************************************************************/
- /* */
- /* 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_memory
-
-
- /* documentation is in ftmemory.h */
-
- FT_BASE_DEF( FT_Error )
- FT_Alloc( FT_Memory memory,
- FT_Long size,
- void* *P )
- {
- FT_Assert( P != 0 );
-
- if ( size > 0 )
- {
- *P = memory->alloc( memory, size );
- if ( !*P )
- {
- FT_ERROR(( "FT_Alloc:" ));
- FT_ERROR(( " Out of memory? (%ld requested)\n",
- size ));
-
- return FT_Err_Out_Of_Memory;
- }
- MEM_Set( *P, 0, size );
- }
- else
- *P = NULL;
-
- FT_TRACE7(( "FT_Alloc:" ));
- FT_TRACE7(( " size = %ld, block = 0x%08p, ref = 0x%08p\n",
- size, *P, P ));
-
- return FT_Err_Ok;
- }
-
-
- /* documentation is in ftmemory.h */
-
- FT_BASE_DEF( FT_Error )
- FT_Realloc( FT_Memory memory,
- FT_Long current,
- FT_Long size,
- void** P )
- {
- void* Q;
-
-
- FT_Assert( P != 0 );
-
- /* if the original pointer is NULL, call FT_Alloc() */
- if ( !*P )
- return FT_Alloc( memory, size, P );
-
- /* if the new block if zero-sized, clear the current one */
- if ( size <= 0 )
- {
- FT_Free( memory, P );
- return FT_Err_Ok;
- }
-
- Q = memory->realloc( memory, current, size, *P );
- if ( !Q )
- goto Fail;
-
- *P = Q;
- return FT_Err_Ok;
-
- Fail:
- FT_ERROR(( "FT_Realloc:" ));
- FT_ERROR(( " Failed (current %ld, requested %ld)\n",
- current, size ));
- return FT_Err_Out_Of_Memory;
- }
-
-
- /* documentation is in ftmemory.h */
-
- FT_BASE_DEF( void )
- FT_Free( FT_Memory memory,
- void** P )
- {
- FT_TRACE7(( "FT_Free:" ));
- FT_TRACE7(( " Freeing block 0x%08p, ref 0x%08p\n",
- P, P ? *P : (void*)0 ));
-
- if ( P && *P )
- {
- memory->free( memory, *P );
- *P = 0;
- }
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** S T R E A M ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* ft_new_input_stream */
- /* */
- /* <Description> */
- /* Creates a new input stream object from an FT_Open_Args structure. */
- /* */
- /* <Note> */
- /* The function expects a valid `astream' parameter. */
- /* */
- static FT_Error
- ft_new_input_stream( FT_Library library,
- FT_Open_Args* args,
- FT_Stream* astream )
- {
- FT_Error error;
- FT_Memory memory;
- FT_Stream stream;
-
-
- if ( !library )
- return FT_Err_Invalid_Library_Handle;
-
- if ( !args )
- return FT_Err_Invalid_Argument;
-
- *astream = 0;
- memory = library->memory;
- if ( ALLOC( stream, sizeof ( *stream ) ) )
- goto Exit;
-
- stream->memory = memory;
-
- /* now, look at the stream flags */
- if ( args->flags & ft_open_memory )
- {
- error = 0;
- FT_New_Memory_Stream( library,
- (FT_Byte*)args->memory_base,
- args->memory_size,
- stream );
- }
- else if ( args->flags & ft_open_pathname )
- {
- error = FT_New_Stream( args->pathname, stream );
- stream->pathname.pointer = args->pathname;
- }
- else if ( ( args->flags & ft_open_stream ) && args->stream )
- {
- /* in this case, we do not need to allocate a new stream object */
- /* since the caller is responsible for closing it himself */
- FREE( stream );
- stream = args->stream;
- }
- else
- error = FT_Err_Invalid_Argument;
-
- if ( error )
- FREE( stream );
-
- *astream = stream;
-
- Exit:
- return error;
- }
-
-
- /* documentation is in ftobjs.h */
-
- FT_EXPORT_DEF( void )
- FT_Done_Stream( FT_Stream stream )
- {
- if ( stream && stream->close )
- {
- stream->close( stream );
- stream->close = 0;
- }
- }
-
-
- static void
- ft_done_stream( FT_Stream* astream,
- FT_Int external )
- {
- FT_Stream stream = *astream;
-
-
- if ( stream->close )
- stream->close( stream );
-
- if ( !external )
- {
- FT_Memory memory = stream->memory;
-
-
- FREE( stream );
- }
- *astream = 0;
- }
-
-
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_objs
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** G L Y P H L O A D E R ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* The glyph loader is a simple object which is used to load a set of */
- /* glyphs easily. It is critical for the correct loading of composites. */
- /* */
- /* Ideally, one can see it as a stack of abstract `glyph' objects. */
- /* */
- /* loader.base Is really the bottom of the stack. It describes a */
- /* single glyph image made of the juxtaposition of */
- /* several glyphs (those `in the stack'). */
- /* */
- /* loader.current Describes the top of the stack, on which a new */
- /* glyph can be loaded. */
- /* */
- /* Rewind Clears the stack. */
- /* Prepare Set up `loader.current' for addition of a new glyph */
- /* image. */
- /* Add Add the `current' glyph image to the `base' one, */
- /* and prepare for another one. */
- /* */
- /* The glyph loader is now a base object. Each driver used to */
- /* re-implement it in one way or the other, which wasted code and */
- /* energy. */
- /* */
- /*************************************************************************/
-
-
- /* create a new glyph loader */
- FT_BASE_DEF( FT_Error )
- FT_GlyphLoader_New( FT_Memory memory,
- FT_GlyphLoader* *aloader )
- {
- FT_GlyphLoader* loader;
- FT_Error error;
-
-
- if ( !ALLOC( loader, sizeof ( *loader ) ) )
- {
- loader->memory = memory;
- *aloader = loader;
- }
- return error;
- }
-
-
- /* rewind the glyph loader - reset counters to 0 */
- FT_BASE_DEF( void )
- FT_GlyphLoader_Rewind( FT_GlyphLoader* loader )
- {
- FT_GlyphLoad* base = &loader->base;
- FT_GlyphLoad* current = &loader->current;
-
-
- base->outline.n_points = 0;
- base->outline.n_contours = 0;
- base->num_subglyphs = 0;
-
- *current = *base;
- }
-
-
- /* reset the glyph loader, frees all allocated tables */
- /* and starts from zero */
- FT_BASE_DEF( void )
- FT_GlyphLoader_Reset( FT_GlyphLoader* loader )
- {
- FT_Memory memory = loader->memory;
-
-
- FREE( loader->base.outline.points );
- FREE( loader->base.outline.tags );
- FREE( loader->base.outline.contours );
- FREE( loader->base.extra_points );
- FREE( loader->base.subglyphs );
-
- loader->max_points = 0;
- loader->max_contours = 0;
- loader->max_subglyphs = 0;
-
- FT_GlyphLoader_Rewind( loader );
- }
-
-
- /* delete a glyph loader */
- FT_BASE_DEF( void )
- FT_GlyphLoader_Done( FT_GlyphLoader* loader )
- {
- if ( loader )
- {
- FT_Memory memory = loader->memory;
-
-
- FT_GlyphLoader_Reset( loader );
- FREE( loader );
- }
- }
-
-
- /* re-adjust the `current' outline fields */
- static void
- FT_GlyphLoader_Adjust_Points( FT_GlyphLoader* loader )
- {
- FT_Outline* base = &loader->base.outline;
- FT_Outline* current = &loader->current.outline;
-
-
- current->points = base->points + base->n_points;
- current->tags = base->tags + base->n_points;
- current->contours = base->contours + base->n_contours;
-
- /* handle extra points table - if any */
- if ( loader->use_extra )
- loader->current.extra_points =
- loader->base.extra_points + base->n_points;
- }
-
-
- FT_BASE_DEF( FT_Error )
- FT_GlyphLoader_Create_Extra( FT_GlyphLoader* loader )
- {
- FT_Error error;
- FT_Memory memory = loader->memory;
-
-
- if ( !ALLOC_ARRAY( loader->base.extra_points,
- loader->max_points, FT_Vector ) )
- {
- loader->use_extra = 1;
- FT_GlyphLoader_Adjust_Points( loader );
- }
- return error;
- }
-
-
- /* re-adjust the `current' subglyphs field */
- static void
- FT_GlyphLoader_Adjust_Subglyphs( FT_GlyphLoader* loader )
- {
- FT_GlyphLoad* base = &loader->base;
- FT_GlyphLoad* current = &loader->current;
-
-
- current->subglyphs = base->subglyphs + base->num_subglyphs;
- }
-
-
- /* Ensure that we can add `n_points' and `n_contours' to our glyph. this */
- /* function reallocates its outline tables if necessary. Note that it */
- /* DOESN'T change the number of points within the loader! */
- /* */
- FT_BASE_DEF( FT_Error )
- FT_GlyphLoader_Check_Points( FT_GlyphLoader* loader,
- FT_UInt n_points,
- FT_UInt n_contours )
- {
- FT_Memory memory = loader->memory;
- FT_Error error = FT_Err_Ok;
- FT_Outline* base = &loader->base.outline;
- FT_Outline* current = &loader->current.outline;
- FT_Bool adjust = 1;
-
- FT_UInt new_max, old_max;
-
-
- /* check points & tags */
- new_max = base->n_points + current->n_points + n_points;
- old_max = loader->max_points;
-
- if ( new_max > old_max )
- {
- new_max = ( new_max + 7 ) & -8;
-
- if ( REALLOC_ARRAY( base->points, old_max, new_max, FT_Vector ) ||
- REALLOC_ARRAY( base->tags, old_max, new_max, FT_Byte ) )
- goto Exit;
-
- if ( loader->use_extra &&
- REALLOC_ARRAY( loader->base.extra_points, old_max,
- new_max, FT_Vector ) )
- goto Exit;
-
- adjust = 1;
- loader->max_points = new_max;
- }
-
- /* check contours */
- old_max = loader->max_contours;
- new_max = base->n_contours + current->n_contours +
- n_contours;
- if ( new_max > old_max )
- {
- new_max = ( new_max + 3 ) & -4;
- if ( REALLOC_ARRAY( base->contours, old_max, new_max, FT_Short ) )
- goto Exit;
-
- adjust = 1;
- loader->max_contours = new_max;
- }
-
- if ( adjust )
- FT_GlyphLoader_Adjust_Points( loader );
-
- Exit:
- return error;
- }
-
-
- /* Ensure that we can add `n_subglyphs' to our glyph. this function */
- /* reallocates its subglyphs table if necessary. Note that it DOES */
- /* NOT change the number of subglyphs within the loader! */
- /* */
- FT_BASE_DEF( FT_Error )
- FT_GlyphLoader_Check_Subglyphs( FT_GlyphLoader* loader,
- FT_UInt n_subs )
- {
- FT_Memory memory = loader->memory;
- FT_Error error = FT_Err_Ok;
- FT_UInt new_max, old_max;
-
- FT_GlyphLoad* base = &loader->base;
- FT_GlyphLoad* current = &loader->current;
-
-
- new_max = base->num_subglyphs + current->num_subglyphs + n_subs;
- old_max = loader->max_subglyphs;
- if ( new_max > old_max )
- {
- new_max = ( new_max + 1 ) & -2;
- if ( REALLOC_ARRAY( base->subglyphs, old_max, new_max, FT_SubGlyph ) )
- goto Exit;
-
- loader->max_subglyphs = new_max;
-
- FT_GlyphLoader_Adjust_Subglyphs( loader );
- }
-
- Exit:
- return error;
- }
-
-
- /* prepare loader for the addition of a new glyph on top of the base one */
- FT_BASE_DEF( void )
- FT_GlyphLoader_Prepare( FT_GlyphLoader* loader )
- {
- FT_GlyphLoad* current = &loader->current;
-
-
- current->outline.n_points = 0;
- current->outline.n_contours = 0;
- current->num_subglyphs = 0;
-
- FT_GlyphLoader_Adjust_Points ( loader );
- FT_GlyphLoader_Adjust_Subglyphs( loader );
- }
-
-
- /* add current glyph to the base image - and prepare for another */
- FT_BASE_DEF( void )
- FT_GlyphLoader_Add( FT_GlyphLoader* loader )
- {
- FT_GlyphLoad* base = &loader->base;
- FT_GlyphLoad* current = &loader->current;
-
- FT_UInt n_curr_contours = current->outline.n_contours;
- FT_UInt n_base_points = base->outline.n_points;
- FT_UInt n;
-
-
- base->outline.n_points =
- (short)( base->outline.n_points + current->outline.n_points );
- base->outline.n_contours =
- (short)( base->outline.n_contours + current->outline.n_contours );
-
- base->num_subglyphs += current->num_subglyphs;
-
- /* adjust contours count in newest outline */
- for ( n = 0; n < n_curr_contours; n++ )
- current->outline.contours[n] =
- (short)( current->outline.contours[n] + n_base_points );
-
- /* prepare for another new glyph image */
- FT_GlyphLoader_Prepare( loader );
- }
-
-
- FT_BASE_DEF( FT_Error )
- FT_GlyphLoader_Copy_Points( FT_GlyphLoader* target,
- FT_GlyphLoader* source )
- {
- FT_Error error;
- FT_UInt num_points = source->base.outline.n_points;
- FT_UInt num_contours = source->base.outline.n_contours;
-
-
- error = FT_GlyphLoader_Check_Points( target, num_points, num_contours );
- if ( !error )
- {
- FT_Outline* out = &target->base.outline;
- FT_Outline* in = &source->base.outline;
-
-
- MEM_Copy( out->points, in->points,
- num_points * sizeof ( FT_Vector ) );
- MEM_Copy( out->tags, in->tags,
- num_points * sizeof ( char ) );
- MEM_Copy( out->contours, in->contours,
- num_contours * sizeof ( short ) );
-
- /* do we need to copy the extra points? */
- if ( target->use_extra && source->use_extra )
- MEM_Copy( target->base.extra_points, source->base.extra_points,
- num_points * sizeof ( FT_Vector ) );
-
- out->n_points = (short)num_points;
- out->n_contours = (short)num_contours;
-
- FT_GlyphLoader_Adjust_Points( target );
- }
-
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** FACE, SIZE & GLYPH SLOT OBJECTS ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- static FT_Error
- ft_glyphslot_init( FT_GlyphSlot slot )
- {
- FT_Driver driver = slot->face->driver;
- FT_Driver_Class* clazz = driver->clazz;
- FT_Memory memory = driver->root.memory;
- FT_Error error = FT_Err_Ok;
- FT_Slot_Internal internal;
-
-
- slot->library = driver->root.library;
-
- if ( ALLOC( internal, sizeof ( *internal ) ) )
- goto Exit;
-
- slot->internal = internal;
-
- if ( FT_DRIVER_USES_OUTLINES( driver ) )
- error = FT_GlyphLoader_New( memory, &internal->loader );
-
- if ( !error && clazz->init_slot )
- error = clazz->init_slot( slot );
-
- Exit:
- return error;
- }
-
-
- static void
- ft_glyphslot_clear( FT_GlyphSlot slot )
- {
- /* free bitmap if needed */
- if ( slot->flags & ft_glyph_own_bitmap )
- {
- FT_Memory memory = FT_FACE_MEMORY( slot->face );
-
-
- FREE( slot->bitmap.buffer );
- slot->flags &= ~ft_glyph_own_bitmap;
- }
-
- /* clear all public fields in the glyph slot */
- MEM_Set( &slot->metrics, 0, sizeof ( slot->metrics ) );
- MEM_Set( &slot->outline, 0, sizeof ( slot->outline ) );
- MEM_Set( &slot->bitmap, 0, sizeof ( slot->bitmap ) );
-
- slot->bitmap_left = 0;
- slot->bitmap_top = 0;
- slot->num_subglyphs = 0;
- slot->subglyphs = 0;
- slot->control_data = 0;
- slot->control_len = 0;
- slot->other = 0;
- slot->format = ft_glyph_format_none;
-
- slot->linearHoriAdvance = 0;
- slot->linearVertAdvance = 0;
- }
-
-
- static void
- ft_glyphslot_done( FT_GlyphSlot slot )
- {
- FT_Driver driver = slot->face->driver;
- FT_Driver_Class* clazz = driver->clazz;
- FT_Memory memory = driver->root.memory;
-
-
- if ( clazz->done_slot )
- clazz->done_slot( slot );
-
- /* free bitmap buffer if needed */
- if ( slot->flags & ft_glyph_own_bitmap )
- FREE( slot->bitmap.buffer );
-
- /* free glyph loader */
- if ( FT_DRIVER_USES_OUTLINES( driver ) )
- {
- FT_GlyphLoader_Done( slot->internal->loader );
- slot->internal->loader = 0;
- }
-
- FREE( slot->internal );
- }
-
-
- /* documentation is in ftobjs.h */
-
- FT_BASE_DEF( FT_Error )
- FT_New_GlyphSlot( FT_Face face,
- FT_GlyphSlot *aslot )
- {
- FT_Error error;
- FT_Driver driver;
- FT_Driver_Class* clazz;
- FT_Memory memory;
- FT_GlyphSlot slot;
-
-
- if ( !face || !aslot || !face->driver )
- return FT_Err_Invalid_Argument;
-
- *aslot = 0;
-
- driver = face->driver;
- clazz = driver->clazz;
- memory = driver->root.memory;
-
- FT_TRACE4(( "FT_New_GlyphSlot: Creating new slot object\n" ));
- if ( !ALLOC( slot, clazz->slot_object_size ) )
- {
- slot->face = face;
-
- error = ft_glyphslot_init( slot );
- if ( error )
- {
- ft_glyphslot_done( slot );
- FREE( slot );
- goto Exit;
- }
-
- *aslot = slot;
- }
-
- Exit:
- FT_TRACE4(( "FT_New_GlyphSlot: Return %d\n", error ));
- return error;
- }
-
-
- /* documentation is in ftobjs.h */
-
- FT_BASE_DEF( void )
- FT_Done_GlyphSlot( FT_GlyphSlot slot )
- {
- if ( slot )
- {
- FT_Driver driver = slot->face->driver;
- FT_Memory memory = driver->root.memory;
- FT_GlyphSlot* parent;
- FT_GlyphSlot cur;
-
-
- /* Remove slot from its parent face's list */
- parent = &slot->face->glyph;
- cur = *parent;
-
- while ( cur )
- {
- if ( cur == slot )
- {
- *parent = cur->next;
- ft_glyphslot_done( slot );
- FREE( slot );
- break;
- }
- cur = cur->next;
- }
- }
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( void )
- FT_Set_Transform( FT_Face face,
- FT_Matrix* matrix,
- FT_Vector* delta )
- {
- FT_Face_Internal internal;
-
-
- if ( !face )
- return;
-
- internal = face->internal;
-
- internal->transform_flags = 0;
-
- if ( !matrix )
- {
- internal->transform_matrix.xx = 0x10000L;
- internal->transform_matrix.xy = 0;
- internal->transform_matrix.yx = 0;
- internal->transform_matrix.yy = 0x10000L;
- matrix = &internal->transform_matrix;
- }
- else
- internal->transform_matrix = *matrix;
-
- /* set transform_flags bit flag 0 if `matrix' isn't the identity */
- if ( ( matrix->xy | matrix->yx ) ||
- matrix->xx != 0x10000L ||
- matrix->yy != 0x10000L )
- internal->transform_flags |= 1;
-
- if ( !delta )
- {
- internal->transform_delta.x = 0;
- internal->transform_delta.y = 0;
- delta = &internal->transform_delta;
- }
- else
- internal->transform_delta = *delta;
-
- /* set transform_flags bit flag 1 if `delta' isn't the null vector */
- if ( delta->x | delta->y )
- internal->transform_flags |= 2;
- }
-
-
- static FT_Renderer
- ft_lookup_glyph_renderer( FT_GlyphSlot slot );
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Load_Glyph( FT_Face face,
- FT_UInt glyph_index,
- FT_Int load_flags )
- {
- FT_Error error;
- FT_Driver driver;
- FT_GlyphSlot slot;
- FT_Library library;
- FT_Bool autohint;
- FT_Module hinter;
-
-
- if ( !face || !face->size || !face->glyph )
- return FT_Err_Invalid_Face_Handle;
-
- if ( glyph_index >= (FT_UInt)face->num_glyphs )
- return FT_Err_Invalid_Argument;
-
- slot = face->glyph;
- ft_glyphslot_clear( slot );
-
- driver = face->driver;
-
- /* when the flag NO_RECURSE is set, we disable hinting and scaling */
- if ( load_flags & FT_LOAD_NO_RECURSE )
- {
- /* disable scaling, hinting, and transformation */
- load_flags |= FT_LOAD_NO_SCALE |
- FT_LOAD_NO_HINTING |
- FT_LOAD_IGNORE_TRANSFORM;
-
- /* disable bitmap rendering */
- load_flags &= ~FT_LOAD_RENDER;
- }
-
- /* do we need to load the glyph through the auto-hinter? */
- library = driver->root.library;
- hinter = library->auto_hinter;
- autohint =
- FT_BOOL( hinter &&
- !( load_flags & ( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING ) ) &&
- FT_DRIVER_IS_SCALABLE( driver ) &&
- FT_DRIVER_USES_OUTLINES( driver ) );
- if ( autohint )
- {
- if ( FT_DRIVER_HAS_HINTER( driver ) &&
- !( load_flags & FT_LOAD_FORCE_AUTOHINT ) )
- autohint = 0;
- }
-
- if ( autohint )
- {
- FT_AutoHinter_Interface* hinting;
-
-
- hinting = (FT_AutoHinter_Interface*)hinter->clazz->module_interface;
-
- error = hinting->load_glyph( (FT_AutoHinter)hinter,
- slot, face->size,
- glyph_index, load_flags );
- }
- else
- error = driver->clazz->load_glyph( slot,
- face->size,
- glyph_index,
- load_flags );
- if ( error )
- goto Exit;
-
- /* compute the advance */
- if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
- {
- slot->advance.x = 0;
- slot->advance.y = slot->metrics.vertAdvance;
- }
- else
- {
- slot->advance.x = slot->metrics.horiAdvance;
- slot->advance.y = 0;
- }
-
- /* compute the linear advance in 16.16 pixels */
- if ( ( load_flags & FT_LOAD_LINEAR_DESIGN ) == 0 )
- {
- FT_UInt EM = face->units_per_EM;
- FT_Size_Metrics* metrics = &face->size->metrics;
-
- slot->linearHoriAdvance = FT_MulDiv( slot->linearHoriAdvance,
- (FT_Long)metrics->x_ppem << 16, EM );
-
- slot->linearVertAdvance = FT_MulDiv( slot->linearVertAdvance,
- (FT_Long)metrics->y_ppem << 16, EM );
- }
-
- if ( ( load_flags & FT_LOAD_IGNORE_TRANSFORM ) == 0 )
- {
- FT_Face_Internal internal = face->internal;
-
-
- /* now, transform the glyph image if needed */
- if ( internal->transform_flags )
- {
- /* get renderer */
- FT_Renderer renderer = ft_lookup_glyph_renderer( slot );
-
-
- if ( renderer )
- error = renderer->clazz->transform_glyph(
- renderer, slot,
- &internal->transform_matrix,
- &internal->transform_delta );
- /* transform advance */
- FT_Vector_Transform( &slot->advance, &internal->transform_matrix );
- }
- }
-
- /* do we need to render the image now? */
- if ( !error &&
- slot->format != ft_glyph_format_bitmap &&
- slot->format != ft_glyph_format_composite &&
- load_flags & FT_LOAD_RENDER )
- {
- error = FT_Render_Glyph( slot,
- ( load_flags & FT_LOAD_MONOCHROME )
- ? ft_render_mode_mono
- : ft_render_mode_normal );
- }
-
- Exit:
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Load_Char( FT_Face face,
- FT_ULong char_code,
- FT_Int load_flags )
- {
- FT_UInt glyph_index;
-
-
- if ( !face )
- return FT_Err_Invalid_Face_Handle;
-
- glyph_index = (FT_UInt)char_code;
- if ( face->charmap )
- glyph_index = FT_Get_Char_Index( face, char_code );
-
- return FT_Load_Glyph( face, glyph_index, load_flags );
- }
-
-
- /* destructor for sizes list */
- static void
- destroy_size( FT_Memory memory,
- FT_Size size,
- FT_Driver driver )
- {
- /* finalize client-specific data */
- if ( size->generic.finalizer )
- size->generic.finalizer( size );
-
- /* finalize format-specific stuff */
- if ( driver->clazz->done_size )
- driver->clazz->done_size( size );
-
- FREE( size->internal );
- FREE( size );
- }
-
-
- /* destructor for faces list */
- static void
- destroy_face( FT_Memory memory,
- FT_Face face,
- FT_Driver driver )
- {
- FT_Driver_Class* clazz = driver->clazz;
-
-
- /* discard auto-hinting data */
- if ( face->autohint.finalizer )
- face->autohint.finalizer( face->autohint.data );
-
- /* Discard glyph slots for this face */
- /* Beware! FT_Done_GlyphSlot() changes the field `face->glyph' */
- while ( face->glyph )
- FT_Done_GlyphSlot( face->glyph );
-
- /* Discard all sizes for this face */
- FT_List_Finalize( &face->sizes_list,
- (FT_List_Destructor)destroy_size,
- memory,
- driver );
- face->size = 0;
-
- /* Now discard client data */
- if ( face->generic.finalizer )
- face->generic.finalizer( face );
-
- /* finalize format-specific stuff */
- if ( clazz->done_face )
- clazz->done_face( face );
-
- /* close the stream for this face if needed */
- ft_done_stream(
- &face->stream,
- ( face->face_flags & FT_FACE_FLAG_EXTERNAL_STREAM ) != 0 );
-
- /* get rid of it */
- if ( face->internal )
- {
- FREE( face->internal->postscript_name );
- FREE( face->internal );
- }
- FREE( face );
- }
-
-
- static void
- Destroy_Driver( FT_Driver driver )
- {
- FT_List_Finalize( &driver->faces_list,
- (FT_List_Destructor)destroy_face,
- driver->root.memory,
- driver );
-
- /* check whether we need to drop the driver's glyph loader */
- if ( FT_DRIVER_USES_OUTLINES( driver ) )
- FT_GlyphLoader_Done( driver->glyph_loader );
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* open_face */
- /* */
- /* <Description> */
- /* This function does some work for FT_Open_Face(). */
- /* */
- static FT_Error
- open_face( FT_Driver driver,
- FT_Stream stream,
- FT_Long face_index,
- FT_Int num_params,
- FT_Parameter* params,
- FT_Face* aface )
- {
- FT_Memory memory;
- FT_Driver_Class* clazz;
- FT_Face face = 0;
- FT_Error error;
- FT_Face_Internal internal;
-
-
- clazz = driver->clazz;
- memory = driver->root.memory;
-
- /* allocate the face object and perform basic initialization */
- if ( ALLOC( face, clazz->face_object_size ) )
- goto Fail;
-
- if ( ALLOC( internal, sizeof ( *internal ) ) )
- goto Fail;
-
- face->internal = internal;
-
- face->driver = driver;
- face->memory = memory;
- face->stream = stream;
-
- error = clazz->init_face( stream,
- face,
- face_index,
- num_params,
- params );
- if ( error )
- goto Fail;
-
- *aface = face;
-
- Fail:
- if ( error )
- {
- clazz->done_face( face );
- FREE( face->internal );
- FREE( face );
- *aface = 0;
- }
-
- return error;
- }
-
-
- /* there's a Mac-specific extended implementation of FT_New_Face() */
- /* in src/mac/ftmac.c */
-
-#ifndef macintosh
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_New_Face( FT_Library library,
- const char* pathname,
- FT_Long face_index,
- FT_Face *aface )
- {
- FT_Open_Args args;
-
-
- /* test for valid `library' and `aface' delayed to FT_Open_Face() */
- if ( !pathname )
- return FT_Err_Invalid_Argument;
-
- args.flags = ft_open_pathname;
- args.pathname = (char*)pathname;
-
- return FT_Open_Face( library, &args, face_index, aface );
- }
-
-#endif /* !macintosh */
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_New_Memory_Face( FT_Library library,
- const FT_Byte* file_base,
- FT_Long file_size,
- FT_Long face_index,
- FT_Face *aface )
- {
- FT_Open_Args args;
-
-
- /* test for valid `library' and `face' delayed to FT_Open_Face() */
- if ( !file_base )
- return FT_Err_Invalid_Argument;
-
- args.flags = ft_open_memory;
- args.memory_base = file_base;
- args.memory_size = file_size;
-
- return FT_Open_Face( library, &args, face_index, aface );
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Open_Face( FT_Library library,
- FT_Open_Args* args,
- FT_Long face_index,
- FT_Face *aface )
- {
- FT_Error error;
- FT_Driver driver;
- FT_Memory memory;
- FT_Stream stream;
- FT_Face face = 0;
- FT_ListNode node = 0;
- FT_Bool external_stream;
-
-
- /* test for valid `library' delayed to */
- /* ft_new_input_stream() */
-
- if ( !aface || !args )
- return FT_Err_Invalid_Argument;
-
- *aface = 0;
-
- external_stream = FT_BOOL( ( args->flags & ft_open_stream ) &&
- args->stream );
-
- /* create input stream */
- error = ft_new_input_stream( library, args, &stream );
- if ( error )
- goto Exit;
-
- memory = library->memory;
-
- /* If the font driver is specified in the `args' structure, use */
- /* it. Otherwise, we scan the list of registered drivers. */
- if ( ( args->flags & ft_open_driver ) && args->driver )
- {
- driver = FT_DRIVER( args->driver );
-
- /* not all modules are drivers, so check... */
- if ( FT_MODULE_IS_DRIVER( driver ) )
- {
- FT_Int num_params = 0;
- FT_Parameter* params = 0;
-
-
- if ( args->flags & ft_open_params )
- {
- num_params = args->num_params;
- params = args->params;
- }
-
- error = open_face( driver, stream, face_index,
- num_params, params, &face );
- if ( !error )
- goto Success;
- }
- else
- error = FT_Err_Invalid_Handle;
-
- ft_done_stream( &stream, external_stream );
- goto Fail;
- }
- else
- {
- /* check each font driver for an appropriate format */
- FT_Module* cur = library->modules;
- FT_Module* limit = cur + library->num_modules;
-
-
- for ( ; cur < limit; cur++ )
- {
- /* not all modules are font drivers, so check... */
- if ( FT_MODULE_IS_DRIVER( cur[0] ) )
- {
- FT_Int num_params = 0;
- FT_Parameter* params = 0;
-
-
- driver = FT_DRIVER( cur[0] );
-
- if ( args->flags & ft_open_params )
- {
- num_params = args->num_params;
- params = args->params;
- }
-
- error = open_face( driver, stream, face_index,
- num_params, params, &face );
- if ( !error )
- goto Success;
-
- if ( FT_ERROR_BASE( error ) != FT_Err_Unknown_File_Format )
- goto Fail2;
- }
- }
-
- /* no driver is able to handle this format */
- error = FT_Err_Unknown_File_Format;
-
- Fail2:
- ft_done_stream( &stream, external_stream );
- goto Fail;
- }
-
- Success:
- FT_TRACE4(( "FT_Open_Face: New face object, adding to list\n" ));
-
- /* set the FT_FACE_FLAG_EXTERNAL_STREAM bit for FT_Done_Face */
- if ( external_stream )
- face->face_flags |= FT_FACE_FLAG_EXTERNAL_STREAM;
-
- /* add the face object to its driver's list */
- if ( ALLOC( node, sizeof ( *node ) ) )
- goto Fail;
-
- node->data = face;
- /* don't assume driver is the same as face->driver, so use */
- /* face->driver instead. */
- FT_List_Add( &face->driver->faces_list, node );
-
- /* now allocate a glyph slot object for the face */
- {
- FT_GlyphSlot slot;
-
-
- FT_TRACE4(( "FT_Open_Face: Creating glyph slot\n" ));
-
- error = FT_New_GlyphSlot( face, &slot );
- if ( error )
- goto Fail;
-
- face->glyph = slot;
- }
-
- /* finally, allocate a size object for the face */
- {
- FT_Size size;
-
-
- FT_TRACE4(( "FT_Open_Face: Creating size object\n" ));
-
- error = FT_New_Size( face, &size );
- if ( error )
- goto Fail;
-
- face->size = size;
- }
-
- /* initialize internal face data */
- {
- FT_Face_Internal internal = face->internal;
-
-
- internal->transform_matrix.xx = 0x10000L;
- internal->transform_matrix.xy = 0;
- internal->transform_matrix.yx = 0;
- internal->transform_matrix.yy = 0x10000L;
-
- internal->transform_delta.x = 0;
- internal->transform_delta.y = 0;
- }
-
- *aface = face;
- goto Exit;
-
- Fail:
- FT_Done_Face( face );
-
- Exit:
- FT_TRACE4(( "FT_Open_Face: Return %d\n", error ));
-
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Attach_File( FT_Face face,
- const char* filepathname )
- {
- FT_Open_Args open;
-
-
- /* test for valid `face' delayed to FT_Attach_Stream() */
-
- if ( !filepathname )
- return FT_Err_Invalid_Argument;
-
- open.flags = ft_open_pathname;
- open.pathname = (char*)filepathname;
-
- return FT_Attach_Stream( face, &open );
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Attach_Stream( FT_Face face,
- FT_Open_Args* parameters )
- {
- FT_Stream stream;
- FT_Error error;
- FT_Driver driver;
-
- FT_Driver_Class* clazz;
-
-
- /* test for valid `parameters' delayed to ft_new_input_stream() */
-
- if ( !face )
- return FT_Err_Invalid_Face_Handle;
-
- driver = face->driver;
- if ( !driver )
- return FT_Err_Invalid_Driver_Handle;
-
- error = ft_new_input_stream( driver->root.library, parameters, &stream );
- if ( error )
- goto Exit;
-
- /* we implement FT_Attach_Stream in each driver through the */
- /* `attach_file' interface */
-
- error = FT_Err_Unimplemented_Feature;
- clazz = driver->clazz;
- if ( clazz->attach_file )
- error = clazz->attach_file( face, stream );
-
- /* close the attached stream */
- ft_done_stream( &stream,
- (FT_Bool)( parameters->stream &&
- ( parameters->flags & ft_open_stream ) ) );
-
- Exit:
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Done_Face( FT_Face face )
- {
- FT_Error error;
- FT_Driver driver;
- FT_Memory memory;
- FT_ListNode node;
-
-
- error = FT_Err_Invalid_Face_Handle;
- if ( face && face->driver )
- {
- driver = face->driver;
- memory = driver->root.memory;
-
- /* find face in driver's list */
- node = FT_List_Find( &driver->faces_list, face );
- if ( node )
- {
- /* remove face object from the driver's list */
- FT_List_Remove( &driver->faces_list, node );
- FREE( node );
-
- /* now destroy the object proper */
- destroy_face( memory, face, driver );
- error = FT_Err_Ok;
- }
- }
- return error;
- }
-
-
- /* documentation is in ftobjs.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_New_Size( FT_Face face,
- FT_Size *asize )
- {
- FT_Error error;
- FT_Memory memory;
- FT_Driver driver;
- FT_Driver_Class* clazz;
-
- FT_Size size = 0;
- FT_ListNode node = 0;
-
-
- if ( !face )
- return FT_Err_Invalid_Face_Handle;
-
- if ( !asize )
- return FT_Err_Invalid_Size_Handle;
-
- if ( !face->driver )
- return FT_Err_Invalid_Driver_Handle;
-
- *asize = 0;
-
- driver = face->driver;
- clazz = driver->clazz;
- memory = face->memory;
-
- /* Allocate new size object and perform basic initialisation */
- if ( ALLOC( size, clazz->size_object_size ) ||
- ALLOC( node, sizeof ( FT_ListNodeRec ) ) )
- goto Exit;
-
- size->face = face;
-
- /* for now, do not use any internal fields in size objects */
- size->internal = 0;
-
- if ( clazz->init_size )
- error = clazz->init_size( size );
-
- /* in case of success, add to the face's list */
- if ( !error )
- {
- *asize = size;
- node->data = size;
- FT_List_Add( &face->sizes_list, node );
- }
-
- Exit:
- if ( error )
- {
- FREE( node );
- FREE( size );
- }
-
- return error;
- }
-
-
- /* documentation is in ftobjs.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Done_Size( FT_Size size )
- {
- FT_Error error;
- FT_Driver driver;
- FT_Memory memory;
- FT_Face face;
- FT_ListNode node;
-
-
- if ( !size )
- return FT_Err_Invalid_Size_Handle;
-
- face = size->face;
- if ( !face )
- return FT_Err_Invalid_Face_Handle;
-
- driver = face->driver;
- if ( !driver )
- return FT_Err_Invalid_Driver_Handle;
-
- memory = driver->root.memory;
-
- error = FT_Err_Ok;
- node = FT_List_Find( &face->sizes_list, size );
- if ( node )
- {
- FT_List_Remove( &face->sizes_list, node );
- FREE( node );
-
- if ( face->size == size )
- {
- face->size = 0;
- if ( face->sizes_list.head )
- face->size = (FT_Size)(face->sizes_list.head->data);
- }
-
- destroy_size( memory, size, driver );
- }
- else
- error = FT_Err_Invalid_Size_Handle;
-
- return error;
- }
-
-
- static void
- ft_recompute_scaled_metrics( FT_Face face,
- FT_Size_Metrics* metrics )
- {
- /* Compute root ascender, descender, test height, and max_advance */
-
- metrics->ascender = ( FT_MulFix( face->ascender,
- metrics->y_scale ) + 32 ) & -64;
-
- metrics->descender = ( FT_MulFix( face->descender,
- metrics->y_scale ) + 32 ) & -64;
-
- metrics->height = ( FT_MulFix( face->height,
- metrics->y_scale ) + 32 ) & -64;
-
- metrics->max_advance = ( FT_MulFix( face->max_advance_width,
- metrics->x_scale ) + 32 ) & -64;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Set_Char_Size( FT_Face face,
- FT_F26Dot6 char_width,
- FT_F26Dot6 char_height,
- FT_UInt horz_resolution,
- FT_UInt vert_resolution )
- {
- FT_Error error = FT_Err_Ok;
- FT_Driver driver;
- FT_Driver_Class* clazz;
- FT_Size_Metrics* metrics;
- FT_Long dim_x, dim_y;
-
-
- if ( !face || !face->size || !face->driver )
- return FT_Err_Invalid_Face_Handle;
-
- driver = face->driver;
- metrics = &face->size->metrics;
-
- if ( !char_width )
- char_width = char_height;
-
- else if ( !char_height )
- char_height = char_width;
-
- if ( !horz_resolution )
- horz_resolution = 72;
-
- if ( !vert_resolution )
- vert_resolution = 72;
-
- driver = face->driver;
- clazz = driver->clazz;
-
- /* default processing -- this can be overridden by the driver */
- if ( char_width < 1 * 64 )
- char_width = 1 * 64;
- if ( char_height < 1 * 64 )
- char_height = 1 * 64;
-
- /* Compute pixel sizes in 26.6 units */
- dim_x = ( ( ( char_width * horz_resolution ) / 72 ) + 32 ) & -64;
- dim_y = ( ( ( char_height * vert_resolution ) / 72 ) + 32 ) & -64;
-
- metrics->x_ppem = (FT_UShort)( dim_x >> 6 );
- metrics->y_ppem = (FT_UShort)( dim_y >> 6 );
-
- metrics->x_scale = 0x10000L;
- metrics->y_scale = 0x10000L;
-
- if ( face->face_flags & FT_FACE_FLAG_SCALABLE )
- {
- metrics->x_scale = FT_DivFix( dim_x, face->units_per_EM );
- metrics->y_scale = FT_DivFix( dim_y, face->units_per_EM );
-
- ft_recompute_scaled_metrics( face, metrics );
- }
-
- if ( clazz->set_char_sizes )
- error = clazz->set_char_sizes( face->size,
- char_width,
- char_height,
- horz_resolution,
- vert_resolution );
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Set_Pixel_Sizes( FT_Face face,
- FT_UInt pixel_width,
- FT_UInt pixel_height )
- {
- FT_Error error = FT_Err_Ok;
- FT_Driver driver;
- FT_Driver_Class* clazz;
- FT_Size_Metrics* metrics = &face->size->metrics;
-
-
- if ( !face || !face->size || !face->driver )
- return FT_Err_Invalid_Face_Handle;
-
- driver = face->driver;
- clazz = driver->clazz;
-
- /* default processing -- this can be overridden by the driver */
- if ( pixel_width == 0 )
- pixel_width = pixel_height;
-
- else if ( pixel_height == 0 )
- pixel_height = pixel_width;
-
- if ( pixel_width < 1 )
- pixel_width = 1;
- if ( pixel_height < 1 )
- pixel_height = 1;
-
- metrics->x_ppem = (FT_UShort)pixel_width;
- metrics->y_ppem = (FT_UShort)pixel_height;
-
- if ( face->face_flags & FT_FACE_FLAG_SCALABLE )
- {
- metrics->x_scale = FT_DivFix( metrics->x_ppem << 6,
- face->units_per_EM );
-
- metrics->y_scale = FT_DivFix( metrics->y_ppem << 6,
- face->units_per_EM );
-
- ft_recompute_scaled_metrics( face, metrics );
- }
-
- if ( clazz->set_pixel_sizes )
- error = clazz->set_pixel_sizes( face->size,
- pixel_width,
- pixel_height );
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Get_Kerning( FT_Face face,
- FT_UInt left_glyph,
- FT_UInt right_glyph,
- FT_UInt kern_mode,
- FT_Vector *akerning )
- {
- FT_Error error = FT_Err_Ok;
- FT_Driver driver;
-
-
- if ( !face )
- return FT_Err_Invalid_Face_Handle;
-
- if ( !akerning )
- return FT_Err_Invalid_Argument;
-
- driver = face->driver;
-
- akerning->x = 0;
- akerning->y = 0;
-
- if ( driver->clazz->get_kerning )
- {
- error = driver->clazz->get_kerning( face,
- left_glyph,
- right_glyph,
- akerning );
- if ( !error )
- {
- if ( kern_mode != ft_kerning_unscaled )
- {
- akerning->x = FT_MulFix( akerning->x, face->size->metrics.x_scale );
- akerning->y = FT_MulFix( akerning->y, face->size->metrics.y_scale );
-
- if ( kern_mode != ft_kerning_unfitted )
- {
- akerning->x = ( akerning->x + 32 ) & -64;
- akerning->y = ( akerning->y + 32 ) & -64;
- }
- }
- }
- }
-
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Select_Charmap( FT_Face face,
- FT_Encoding encoding )
- {
- FT_CharMap* cur;
- FT_CharMap* limit;
-
-
- if ( !face )
- return FT_Err_Invalid_Face_Handle;
-
- cur = face->charmaps;
- if ( !cur )
- return FT_Err_Invalid_CharMap_Handle;
-
- limit = cur + face->num_charmaps;
-
- for ( ; cur < limit; cur++ )
- {
- if ( cur[0]->encoding == encoding )
- {
- face->charmap = cur[0];
- return 0;
- }
- }
-
- return FT_Err_Invalid_Argument;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Set_Charmap( FT_Face face,
- FT_CharMap charmap )
- {
- FT_CharMap* cur;
- FT_CharMap* limit;
-
-
- if ( !face )
- return FT_Err_Invalid_Face_Handle;
-
- cur = face->charmaps;
- if ( !cur )
- return FT_Err_Invalid_CharMap_Handle;
-
- limit = cur + face->num_charmaps;
-
- for ( ; cur < limit; cur++ )
- {
- if ( cur[0] == charmap )
- {
- face->charmap = cur[0];
- return 0;
- }
- }
- return FT_Err_Invalid_Argument;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_UInt )
- FT_Get_Char_Index( FT_Face face,
- FT_ULong charcode )
- {
- FT_UInt result;
- FT_Driver driver;
-
-
- result = 0;
- if ( face && face->charmap )
- {
- driver = face->driver;
- result = driver->clazz->get_char_index( face->charmap, charcode );
- }
- return result;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_UInt )
- FT_Get_Name_Index( FT_Face face,
- FT_String* glyph_name )
- {
- FT_UInt result = 0;
-
-
- if ( face && FT_HAS_GLYPH_NAMES( face ) )
- {
- /* now, lookup for glyph name */
- FT_Driver driver = face->driver;
- FT_Module_Class* clazz = FT_MODULE_CLASS( driver );
-
-
- if ( clazz->get_interface )
- {
- FT_Name_Index_Requester requester;
-
-
- requester = (FT_Name_Index_Requester)clazz->get_interface(
- FT_MODULE( driver ), "name_index" );
- if ( requester )
- result = requester( face, glyph_name );
- }
- }
-
- return result;
- }
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Get_Glyph_Name( FT_Face face,
- FT_UInt glyph_index,
- FT_Pointer buffer,
- FT_UInt buffer_max )
- {
- FT_Error error = FT_Err_Invalid_Argument;
-
-
- /* clean up buffer */
- if ( buffer && buffer_max > 0 )
- ((FT_Byte*)buffer)[0] = 0;
-
- if ( face &&
- glyph_index < (FT_UInt)face->num_glyphs &&
- FT_HAS_GLYPH_NAMES( face ) )
- {
- /* now, lookup for glyph name */
- FT_Driver driver = face->driver;
- FT_Module_Class* clazz = FT_MODULE_CLASS( driver );
-
-
- if ( clazz->get_interface )
- {
- FT_Glyph_Name_Requester requester;
-
-
- requester = (FT_Glyph_Name_Requester)clazz->get_interface(
- FT_MODULE( driver ), "glyph_name" );
- if ( requester )
- error = requester( face, glyph_index, buffer, buffer_max );
- }
- }
-
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( const char* )
- FT_Get_Postscript_Name( FT_Face face )
- {
- const char* result = NULL;
-
- if ( !face )
- goto Exit;
-
- result = face->internal->postscript_name;
- if ( !result )
- {
- /* now, lookup for glyph name */
- FT_Driver driver = face->driver;
- FT_Module_Class* clazz = FT_MODULE_CLASS( driver );
-
- if ( clazz->get_interface )
- {
- FT_PSName_Requester requester;
-
- requester = (FT_PSName_Requester)clazz->get_interface(
- FT_MODULE( driver ), "postscript_name" );
- if ( requester )
- result = requester( face );
- }
- }
- Exit:
- return result;
- }
-
-
- /* documentation is in tttables.h */
-
- FT_EXPORT_DEF( void* )
- FT_Get_Sfnt_Table( FT_Face face,
- FT_Sfnt_Tag tag )
- {
- void* table = 0;
- FT_Get_Sfnt_Table_Func func;
- FT_Driver driver;
-
-
- if ( !face || !FT_IS_SFNT( face ) )
- goto Exit;
-
- driver = face->driver;
- func = (FT_Get_Sfnt_Table_Func)driver->root.clazz->get_interface(
- FT_MODULE( driver ), "get_sfnt" );
- if ( func )
- table = func( face, tag );
-
- Exit:
- return table;
- }
-
-
- FT_EXPORT_DEF( FT_Error )
- FT_Activate_Size( FT_Size size )
- {
- FT_Face face;
-
-
- if ( size == NULL )
- return FT_Err_Bad_Argument;
-
- face = size->face;
- if ( face == NULL || face->driver == NULL )
- return FT_Err_Bad_Argument;
-
- /* we don't need anything more complex than that; all size objects */
- /* are already listed by the face */
- face->size = size;
-
- return FT_Err_Ok;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** R E N D E R E R S ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
- /* lookup a renderer by glyph format in the library's list */
- FT_BASE_DEF( FT_Renderer )
- FT_Lookup_Renderer( FT_Library library,
- FT_Glyph_Format format,
- FT_ListNode* node )
- {
- FT_ListNode cur;
- FT_Renderer result = 0;
-
-
- if ( !library )
- goto Exit;
-
- cur = library->renderers.head;
-
- if ( node )
- {
- if ( *node )
- cur = (*node)->next;
- *node = 0;
- }
-
- while ( cur )
- {
- FT_Renderer renderer = FT_RENDERER( cur->data );
-
-
- if ( renderer->glyph_format == format )
- {
- if ( node )
- *node = cur;
-
- result = renderer;
- break;
- }
- cur = cur->next;
- }
-
- Exit:
- return result;
- }
-
-
- static FT_Renderer
- ft_lookup_glyph_renderer( FT_GlyphSlot slot )
- {
- FT_Face face = slot->face;
- FT_Library library = FT_FACE_LIBRARY( face );
- FT_Renderer result = library->cur_renderer;
-
-
- if ( !result || result->glyph_format != slot->format )
- result = FT_Lookup_Renderer( library, slot->format, 0 );
-
- return result;
- }
-
-
- static void
- ft_set_current_renderer( FT_Library library )
- {
- FT_Renderer renderer;
-
-
- renderer = FT_Lookup_Renderer( library, ft_glyph_format_outline, 0 );
- library->cur_renderer = renderer;
- }
-
-
- static FT_Error
- ft_add_renderer( FT_Module module )
- {
- FT_Library library = module->library;
- FT_Memory memory = library->memory;
- FT_Error error;
- FT_ListNode node;
-
-
- if ( ALLOC( node, sizeof ( *node ) ) )
- goto Exit;
-
- {
- FT_Renderer render = FT_RENDERER( module );
- FT_Renderer_Class* clazz = (FT_Renderer_Class*)module->clazz;
-
-
- render->clazz = clazz;
- render->glyph_format = clazz->glyph_format;
-
- /* allocate raster object if needed */
- if ( clazz->glyph_format == ft_glyph_format_outline &&
- clazz->raster_class->raster_new )
- {
- error = clazz->raster_class->raster_new( memory, &render->raster );
- if ( error )
- goto Fail;
-
- render->raster_render = clazz->raster_class->raster_render;
- render->render = clazz->render_glyph;
- }
-
- /* add to list */
- node->data = module;
- FT_List_Add( &library->renderers, node );
-
- ft_set_current_renderer( library );
- }
-
- Fail:
- if ( error )
- FREE( node );
-
- Exit:
- return error;
- }
-
-
- static void
- ft_remove_renderer( FT_Module module )
- {
- FT_Library library = module->library;
- FT_Memory memory = library->memory;
- FT_ListNode node;
-
-
- node = FT_List_Find( &library->renderers, module );
- if ( node )
- {
- FT_Renderer render = FT_RENDERER( module );
-
-
- /* release raster object, if any */
- if ( render->raster )
- render->clazz->raster_class->raster_done( render->raster );
-
- /* remove from list */
- FT_List_Remove( &library->renderers, node );
- FREE( node );
-
- ft_set_current_renderer( library );
- }
- }
-
-
- /* documentation is in ftrender.h */
-
- FT_EXPORT_DEF( FT_Renderer )
- FT_Get_Renderer( FT_Library library,
- FT_Glyph_Format format )
- {
- /* test for valid `library' delayed to FT_Lookup_Renderer() */
-
- return FT_Lookup_Renderer( library, format, 0 );
- }
-
-
- /* documentation is in ftrender.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Set_Renderer( FT_Library library,
- FT_Renderer renderer,
- FT_UInt num_params,
- FT_Parameter* parameters )
- {
- FT_ListNode node;
- FT_Error error = FT_Err_Ok;
-
-
- if ( !library )
- return FT_Err_Invalid_Library_Handle;
-
- if ( !renderer )
- return FT_Err_Invalid_Argument;
-
- node = FT_List_Find( &library->renderers, renderer );
- if ( !node )
- {
- error = FT_Err_Invalid_Argument;
- goto Exit;
- }
-
- FT_List_Up( &library->renderers, node );
-
- if ( renderer->glyph_format == ft_glyph_format_outline )
- library->cur_renderer = renderer;
-
- if ( num_params > 0 )
- {
- FTRenderer_setMode set_mode = renderer->clazz->set_mode;
-
-
- for ( ; num_params > 0; num_params-- )
- {
- error = set_mode( renderer, parameters->tag, parameters->data );
- if ( error )
- break;
- }
- }
-
- Exit:
- return error;
- }
-
-
- FT_EXPORT_DEF( FT_Error )
- FT_Render_Glyph_Internal( FT_Library library,
- FT_GlyphSlot slot,
- FT_UInt render_mode )
- {
- FT_Error error = FT_Err_Ok;
- FT_Renderer renderer;
-
-
- /* if it is already a bitmap, no need to do anything */
- switch ( slot->format )
- {
- case ft_glyph_format_bitmap: /* already a bitmap, don't do anything */
- break;
-
- default:
- {
- FT_ListNode node = 0;
- FT_Bool update = 0;
-
-
- /* small shortcut for the very common case */
- if ( slot->format == ft_glyph_format_outline )
- {
- renderer = library->cur_renderer;
- node = library->renderers.head;
- }
- else
- renderer = FT_Lookup_Renderer( library, slot->format, &node );
-
- error = FT_Err_Unimplemented_Feature;
- while ( renderer )
- {
- error = renderer->render( renderer, slot, render_mode, 0 );
- if ( !error ||
- FT_ERROR_BASE( error ) != FT_Err_Cannot_Render_Glyph )
- break;
-
- /* FT_Err_Cannot_Render_Glyph is returned if the render mode */
- /* is unsupported by the current renderer for this glyph image */
- /* format. */
-
- /* now, look for another renderer that supports the same */
- /* format. */
- renderer = FT_Lookup_Renderer( library, slot->format, &node );
- update = 1;
- }
-
- /* if we changed the current renderer for the glyph image format */
- /* we need to select it as the next current one */
- if ( !error && update && renderer )
- FT_Set_Renderer( library, renderer, 0, 0 );
- }
- }
-
- return error;
- }
-
-
- /* documentation is in freetype.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Render_Glyph( FT_GlyphSlot slot,
- FT_UInt render_mode )
- {
- FT_Library library;
-
-
- if ( !slot )
- return FT_Err_Invalid_Argument;
-
- library = FT_FACE_LIBRARY( slot->face );
-
- return FT_Render_Glyph_Internal( library, slot, render_mode );
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** M O D U L E S ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* Destroy_Module */
- /* */
- /* <Description> */
- /* Destroys a given module object. For drivers, this also destroys */
- /* all child faces. */
- /* */
- /* <InOut> */
- /* module :: A handle to the target driver object. */
- /* */
- /* <Note> */
- /* The driver _must_ be LOCKED! */
- /* */
- static void
- Destroy_Module( FT_Module module )
- {
- FT_Memory memory = module->memory;
- FT_Module_Class* clazz = module->clazz;
- FT_Library library = module->library;
-
-
- /* finalize client-data - before anything else */
- if ( module->generic.finalizer )
- module->generic.finalizer( module );
-
- if ( library && library->auto_hinter == module )
- library->auto_hinter = 0;
-
- /* if the module is a renderer */
- if ( FT_MODULE_IS_RENDERER( module ) )
- ft_remove_renderer( module );
-
- /* if the module is a font driver, add some steps */
- if ( FT_MODULE_IS_DRIVER( module ) )
- Destroy_Driver( FT_DRIVER( module ) );
-
- /* finalize the module object */
- if ( clazz->module_done )
- clazz->module_done( module );
-
- /* discard it */
- FREE( module );
- }
-
-
- /* documentation is in ftmodule.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Add_Module( FT_Library library,
- const FT_Module_Class* clazz )
- {
- FT_Error error;
- FT_Memory memory;
- FT_Module module;
- FT_UInt nn;
-
-
-#define FREETYPE_VER_FIXED ( ( (FT_Long)FREETYPE_MAJOR << 16 ) | \
- FREETYPE_MINOR )
-
- if ( !library )
- return FT_Err_Invalid_Library_Handle;
-
- if ( !clazz )
- return FT_Err_Invalid_Argument;
-
- /* check freetype version */
- if ( clazz->module_requires > FREETYPE_VER_FIXED )
- return FT_Err_Invalid_Version;
-
- /* look for a module with the same name in the library's table */
- for ( nn = 0; nn < library->num_modules; nn++ )
- {
- module = library->modules[nn];
- if ( strcmp( module->clazz->module_name, clazz->module_name ) == 0 )
- {
- /* this installed module has the same name, compare their versions */
- if ( clazz->module_version <= module->clazz->module_version )
- return FT_Err_Lower_Module_Version;
-
- /* remove the module from our list, then exit the loop to replace */
- /* it by our new version.. */
- FT_Remove_Module( library, module );
- break;
- }
- }
-
- memory = library->memory;
- error = FT_Err_Ok;
-
- if ( library->num_modules >= FT_MAX_MODULES )
- {
- error = FT_Err_Too_Many_Drivers;
- goto Exit;
- }
-
- /* allocate module object */
- if ( ALLOC( module,clazz->module_size ) )
- goto Exit;
-
- /* base initialization */
- module->library = library;
- module->memory = memory;
- module->clazz = (FT_Module_Class*)clazz;
-
- /* check whether the module is a renderer - this must be performed */
- /* before the normal module initialization */
- if ( FT_MODULE_IS_RENDERER( module ) )
- {
- /* add to the renderers list */
- error = ft_add_renderer( module );
- if ( error )
- goto Fail;
- }
-
- /* is the module a auto-hinter? */
- if ( FT_MODULE_IS_HINTER( module ) )
- library->auto_hinter = module;
-
- /* if the module is a font driver */
- if ( FT_MODULE_IS_DRIVER( module ) )
- {
- /* allocate glyph loader if needed */
- FT_Driver driver = FT_DRIVER( module );
-
-
- driver->clazz = (FT_Driver_Class*)module->clazz;
- if ( FT_DRIVER_USES_OUTLINES( driver ) )
- {
- error = FT_GlyphLoader_New( memory, &driver->glyph_loader );
- if ( error )
- goto Fail;
- }
- }
-
- if ( clazz->module_init )
- {
- error = clazz->module_init( module );
- if ( error )
- goto Fail;
- }
-
- /* add module to the library's table */
- library->modules[library->num_modules++] = module;
-
- Exit:
- return error;
-
- Fail:
- if ( FT_MODULE_IS_DRIVER( module ) )
- {
- FT_Driver driver = FT_DRIVER( module );
-
-
- if ( FT_DRIVER_USES_OUTLINES( driver ) )
- FT_GlyphLoader_Done( driver->glyph_loader );
- }
-
- if ( FT_MODULE_IS_RENDERER( module ) )
- {
- FT_Renderer renderer = FT_RENDERER( module );
-
-
- if ( renderer->raster )
- renderer->clazz->raster_class->raster_done( renderer->raster );
- }
-
- FREE( module );
- goto Exit;
- }
-
-
- /* documentation is in ftmodule.h */
-
- FT_EXPORT_DEF( FT_Module )
- FT_Get_Module( FT_Library library,
- const char* module_name )
- {
- FT_Module result = 0;
- FT_Module* cur;
- FT_Module* limit;
-
-
- if ( !library || !module_name )
- return result;
-
- cur = library->modules;
- limit = cur + library->num_modules;
-
- for ( ; cur < limit; cur++ )
- if ( strcmp( cur[0]->clazz->module_name, module_name ) == 0 )
- {
- result = cur[0];
- break;
- }
-
- return result;
- }
-
-
- /* documentation is in ftobjs.h */
-
- FT_BASE_DEF( const void* )
- FT_Get_Module_Interface( FT_Library library,
- const char* mod_name )
- {
- FT_Module module;
-
-
- /* test for valid `library' delayed to FT_Get_Module() */
-
- module = FT_Get_Module( library, mod_name );
-
- return module ? module->clazz->module_interface : 0;
- }
-
-
- /* documentation is in ftmodule.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Remove_Module( FT_Library library,
- FT_Module module )
- {
- /* try to find the module from the table, then remove it from there */
-
- if ( !library )
- return FT_Err_Invalid_Library_Handle;
-
- if ( module )
- {
- FT_Module* cur = library->modules;
- FT_Module* limit = cur + library->num_modules;
-
-
- for ( ; cur < limit; cur++ )
- {
- if ( cur[0] == module )
- {
- /* remove it from the table */
- library->num_modules--;
- limit--;
- while ( cur < limit )
- {
- cur[0] = cur[1];
- cur++;
- }
- limit[0] = 0;
-
- /* destroy the module */
- Destroy_Module( module );
-
- return FT_Err_Ok;
- }
- }
- }
- return FT_Err_Invalid_Driver_Handle;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** L I B R A R Y ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /* documentation is in ftmodule.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_New_Library( FT_Memory memory,
- FT_Library *alibrary )
- {
- FT_Library library = 0;
- FT_Error error;
-
-
- if ( !memory )
- return FT_Err_Invalid_Argument;
-
- /* first of all, allocate the library object */
- if ( ALLOC( library, sizeof ( *library ) ) )
- return error;
-
- library->memory = memory;
-
- /* allocate the render pool */
- library->raster_pool_size = FT_RENDER_POOL_SIZE;
- if ( ALLOC( library->raster_pool, FT_RENDER_POOL_SIZE ) )
- goto Fail;
-
- /* That's ok now */
- *alibrary = library;
-
- return FT_Err_Ok;
-
- Fail:
- FREE( library );
- return error;
- }
-
-
- /* documentation is in ftmodule.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Done_Library( FT_Library library )
- {
- FT_Memory memory;
- FT_UInt n;
-
-
- if ( !library )
- return FT_Err_Invalid_Library_Handle;
-
- memory = library->memory;
-
- /* Discard client-data */
- if ( library->generic.finalizer )
- library->generic.finalizer( library );
-
- /* Close all modules in the library */
- for ( n = 0; n < library->num_modules; n++ )
- {
- FT_Module module = library->modules[n];
-
-
- if ( module )
- {
- Destroy_Module( module );
- library->modules[n] = 0;
- }
- }
-
- /* Destroy raster objects */
- FREE( library->raster_pool );
- library->raster_pool_size = 0;
-
- FREE( library );
- return FT_Err_Ok;
- }
-
-
- /* documentation is in ftmodule.h */
-
- FT_EXPORT_DEF( void )
- FT_Set_Debug_Hook( FT_Library library,
- FT_UInt hook_index,
- FT_DebugHook_Func debug_hook )
- {
- if ( library && debug_hook &&
- hook_index <
- ( sizeof ( library->debug_hooks ) / sizeof ( void* ) ) )
- library->debug_hooks[hook_index] = debug_hook;
- }
-
-
-/* END */
projects / rrdtool.git / blobdiff