--- a/misc/libfreetype/src/base/ftglyph.c Fri Oct 11 11:55:31 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,627 +0,0 @@
-/***************************************************************************/
-/* */
-/* ftglyph.c */
-/* */
-/* FreeType convenience functions to handle glyphs (body). */
-/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2007, 2008, 2010 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. */
-/* */
-/***************************************************************************/
-
- /*************************************************************************/
- /* */
- /* This file contains the definition of several convenience functions */
- /* that can be used by client applications to easily retrieve glyph */
- /* bitmaps and outlines from a given face. */
- /* */
- /* These functions should be optional if you are writing a font server */
- /* or text layout engine on top of FreeType. However, they are pretty */
- /* handy for many other simple uses of the library. */
- /* */
- /*************************************************************************/
-
-
-#include <ft2build.h>
-#include FT_GLYPH_H
-#include FT_OUTLINE_H
-#include FT_BITMAP_H
-#include FT_INTERNAL_OBJECTS_H
-
-#include "basepic.h"
-
- /*************************************************************************/
- /* */
- /* 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_glyph
-
-
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** FT_BitmapGlyph support ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
-
- FT_CALLBACK_DEF( FT_Error )
- ft_bitmap_glyph_init( FT_Glyph bitmap_glyph,
- FT_GlyphSlot slot )
- {
- FT_BitmapGlyph glyph = (FT_BitmapGlyph)bitmap_glyph;
- FT_Error error = FT_Err_Ok;
- FT_Library library = FT_GLYPH( glyph )->library;
-
-
- if ( slot->format != FT_GLYPH_FORMAT_BITMAP )
- {
- error = FT_Err_Invalid_Glyph_Format;
- goto Exit;
- }
-
- glyph->left = slot->bitmap_left;
- glyph->top = slot->bitmap_top;
-
- /* do lazy copying whenever possible */
- if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
- {
- glyph->bitmap = slot->bitmap;
- slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
- }
- else
- {
- FT_Bitmap_New( &glyph->bitmap );
- error = FT_Bitmap_Copy( library, &slot->bitmap, &glyph->bitmap );
- }
-
- Exit:
- return error;
- }
-
-
- FT_CALLBACK_DEF( FT_Error )
- ft_bitmap_glyph_copy( FT_Glyph bitmap_source,
- FT_Glyph bitmap_target )
- {
- FT_Library library = bitmap_source->library;
- FT_BitmapGlyph source = (FT_BitmapGlyph)bitmap_source;
- FT_BitmapGlyph target = (FT_BitmapGlyph)bitmap_target;
-
-
- target->left = source->left;
- target->top = source->top;
-
- return FT_Bitmap_Copy( library, &source->bitmap, &target->bitmap );
- }
-
-
- FT_CALLBACK_DEF( void )
- ft_bitmap_glyph_done( FT_Glyph bitmap_glyph )
- {
- FT_BitmapGlyph glyph = (FT_BitmapGlyph)bitmap_glyph;
- FT_Library library = FT_GLYPH( glyph )->library;
-
-
- FT_Bitmap_Done( library, &glyph->bitmap );
- }
-
-
- FT_CALLBACK_DEF( void )
- ft_bitmap_glyph_bbox( FT_Glyph bitmap_glyph,
- FT_BBox* cbox )
- {
- FT_BitmapGlyph glyph = (FT_BitmapGlyph)bitmap_glyph;
-
-
- cbox->xMin = glyph->left << 6;
- cbox->xMax = cbox->xMin + ( glyph->bitmap.width << 6 );
- cbox->yMax = glyph->top << 6;
- cbox->yMin = cbox->yMax - ( glyph->bitmap.rows << 6 );
- }
-
-
- FT_DEFINE_GLYPH(ft_bitmap_glyph_class,
- sizeof ( FT_BitmapGlyphRec ),
- FT_GLYPH_FORMAT_BITMAP,
-
- ft_bitmap_glyph_init,
- ft_bitmap_glyph_done,
- ft_bitmap_glyph_copy,
- 0, /* FT_Glyph_TransformFunc */
- ft_bitmap_glyph_bbox,
- 0 /* FT_Glyph_PrepareFunc */
- )
-
-
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** FT_OutlineGlyph support ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- FT_CALLBACK_DEF( FT_Error )
- ft_outline_glyph_init( FT_Glyph outline_glyph,
- FT_GlyphSlot slot )
- {
- FT_OutlineGlyph glyph = (FT_OutlineGlyph)outline_glyph;
- FT_Error error = FT_Err_Ok;
- FT_Library library = FT_GLYPH( glyph )->library;
- FT_Outline* source = &slot->outline;
- FT_Outline* target = &glyph->outline;
-
-
- /* check format in glyph slot */
- if ( slot->format != FT_GLYPH_FORMAT_OUTLINE )
- {
- error = FT_Err_Invalid_Glyph_Format;
- goto Exit;
- }
-
- /* allocate new outline */
- error = FT_Outline_New( library, source->n_points, source->n_contours,
- &glyph->outline );
- if ( error )
- goto Exit;
-
- FT_Outline_Copy( source, target );
-
- Exit:
- return error;
- }
-
-
- FT_CALLBACK_DEF( void )
- ft_outline_glyph_done( FT_Glyph outline_glyph )
- {
- FT_OutlineGlyph glyph = (FT_OutlineGlyph)outline_glyph;
-
-
- FT_Outline_Done( FT_GLYPH( glyph )->library, &glyph->outline );
- }
-
-
- FT_CALLBACK_DEF( FT_Error )
- ft_outline_glyph_copy( FT_Glyph outline_source,
- FT_Glyph outline_target )
- {
- FT_OutlineGlyph source = (FT_OutlineGlyph)outline_source;
- FT_OutlineGlyph target = (FT_OutlineGlyph)outline_target;
- FT_Error error;
- FT_Library library = FT_GLYPH( source )->library;
-
-
- error = FT_Outline_New( library, source->outline.n_points,
- source->outline.n_contours, &target->outline );
- if ( !error )
- FT_Outline_Copy( &source->outline, &target->outline );
-
- return error;
- }
-
-
- FT_CALLBACK_DEF( void )
- ft_outline_glyph_transform( FT_Glyph outline_glyph,
- const FT_Matrix* matrix,
- const FT_Vector* delta )
- {
- FT_OutlineGlyph glyph = (FT_OutlineGlyph)outline_glyph;
-
-
- if ( matrix )
- FT_Outline_Transform( &glyph->outline, matrix );
-
- if ( delta )
- FT_Outline_Translate( &glyph->outline, delta->x, delta->y );
- }
-
-
- FT_CALLBACK_DEF( void )
- ft_outline_glyph_bbox( FT_Glyph outline_glyph,
- FT_BBox* bbox )
- {
- FT_OutlineGlyph glyph = (FT_OutlineGlyph)outline_glyph;
-
-
- FT_Outline_Get_CBox( &glyph->outline, bbox );
- }
-
-
- FT_CALLBACK_DEF( FT_Error )
- ft_outline_glyph_prepare( FT_Glyph outline_glyph,
- FT_GlyphSlot slot )
- {
- FT_OutlineGlyph glyph = (FT_OutlineGlyph)outline_glyph;
-
-
- slot->format = FT_GLYPH_FORMAT_OUTLINE;
- slot->outline = glyph->outline;
- slot->outline.flags &= ~FT_OUTLINE_OWNER;
-
- return FT_Err_Ok;
- }
-
-
- FT_DEFINE_GLYPH( ft_outline_glyph_class,
- sizeof ( FT_OutlineGlyphRec ),
- FT_GLYPH_FORMAT_OUTLINE,
-
- ft_outline_glyph_init,
- ft_outline_glyph_done,
- ft_outline_glyph_copy,
- ft_outline_glyph_transform,
- ft_outline_glyph_bbox,
- ft_outline_glyph_prepare
- )
-
-
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** FT_Glyph class and API ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
-
- static FT_Error
- ft_new_glyph( FT_Library library,
- const FT_Glyph_Class* clazz,
- FT_Glyph* aglyph )
- {
- FT_Memory memory = library->memory;
- FT_Error error;
- FT_Glyph glyph = NULL;
-
-
- *aglyph = 0;
-
- if ( !FT_ALLOC( glyph, clazz->glyph_size ) )
- {
- glyph->library = library;
- glyph->clazz = clazz;
- glyph->format = clazz->glyph_format;
-
- *aglyph = glyph;
- }
-
- return error;
- }
-
-
- /* documentation is in ftglyph.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Glyph_Copy( FT_Glyph source,
- FT_Glyph *target )
- {
- FT_Glyph copy;
- FT_Error error;
- const FT_Glyph_Class* clazz;
-
-
- /* check arguments */
- if ( !target )
- {
- error = FT_Err_Invalid_Argument;
- goto Exit;
- }
-
- *target = 0;
-
- if ( !source || !source->clazz )
- {
- error = FT_Err_Invalid_Argument;
- goto Exit;
- }
-
- clazz = source->clazz;
- error = ft_new_glyph( source->library, clazz, © );
- if ( error )
- goto Exit;
-
- copy->advance = source->advance;
- copy->format = source->format;
-
- if ( clazz->glyph_copy )
- error = clazz->glyph_copy( source, copy );
-
- if ( error )
- FT_Done_Glyph( copy );
- else
- *target = copy;
-
- Exit:
- return error;
- }
-
-
- /* documentation is in ftglyph.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Get_Glyph( FT_GlyphSlot slot,
- FT_Glyph *aglyph )
- {
- FT_Library library;
- FT_Error error;
- FT_Glyph glyph;
-
- const FT_Glyph_Class* clazz = 0;
-
-
- if ( !slot )
- return FT_Err_Invalid_Slot_Handle;
-
- library = slot->library;
-
- if ( !aglyph )
- return FT_Err_Invalid_Argument;
-
- /* if it is a bitmap, that's easy :-) */
- if ( slot->format == FT_GLYPH_FORMAT_BITMAP )
- clazz = FT_BITMAP_GLYPH_CLASS_GET;
-
- /* if it is an outline */
- else if ( slot->format == FT_GLYPH_FORMAT_OUTLINE )
- clazz = FT_OUTLINE_GLYPH_CLASS_GET;
-
- else
- {
- /* try to find a renderer that supports the glyph image format */
- FT_Renderer render = FT_Lookup_Renderer( library, slot->format, 0 );
-
-
- if ( render )
- clazz = &render->glyph_class;
- }
-
- if ( !clazz )
- {
- error = FT_Err_Invalid_Glyph_Format;
- goto Exit;
- }
-
- /* create FT_Glyph object */
- error = ft_new_glyph( library, clazz, &glyph );
- if ( error )
- goto Exit;
-
- /* copy advance while converting it to 16.16 format */
- glyph->advance.x = slot->advance.x << 10;
- glyph->advance.y = slot->advance.y << 10;
-
- /* now import the image from the glyph slot */
- error = clazz->glyph_init( glyph, slot );
-
- /* if an error occurred, destroy the glyph */
- if ( error )
- FT_Done_Glyph( glyph );
- else
- *aglyph = glyph;
-
- Exit:
- return error;
- }
-
-
- /* documentation is in ftglyph.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Glyph_Transform( FT_Glyph glyph,
- FT_Matrix* matrix,
- FT_Vector* delta )
- {
- const FT_Glyph_Class* clazz;
- FT_Error error = FT_Err_Ok;
-
-
- if ( !glyph || !glyph->clazz )
- error = FT_Err_Invalid_Argument;
- else
- {
- clazz = glyph->clazz;
- if ( clazz->glyph_transform )
- {
- /* transform glyph image */
- clazz->glyph_transform( glyph, matrix, delta );
-
- /* transform advance vector */
- if ( matrix )
- FT_Vector_Transform( &glyph->advance, matrix );
- }
- else
- error = FT_Err_Invalid_Glyph_Format;
- }
- return error;
- }
-
-
- /* documentation is in ftglyph.h */
-
- FT_EXPORT_DEF( void )
- FT_Glyph_Get_CBox( FT_Glyph glyph,
- FT_UInt bbox_mode,
- FT_BBox *acbox )
- {
- const FT_Glyph_Class* clazz;
-
-
- if ( !acbox )
- return;
-
- acbox->xMin = acbox->yMin = acbox->xMax = acbox->yMax = 0;
-
- if ( !glyph || !glyph->clazz )
- return;
- else
- {
- clazz = glyph->clazz;
- if ( !clazz->glyph_bbox )
- return;
- else
- {
- /* retrieve bbox in 26.6 coordinates */
- clazz->glyph_bbox( glyph, acbox );
-
- /* perform grid fitting if needed */
- if ( bbox_mode == FT_GLYPH_BBOX_GRIDFIT ||
- bbox_mode == FT_GLYPH_BBOX_PIXELS )
- {
- acbox->xMin = FT_PIX_FLOOR( acbox->xMin );
- acbox->yMin = FT_PIX_FLOOR( acbox->yMin );
- acbox->xMax = FT_PIX_CEIL( acbox->xMax );
- acbox->yMax = FT_PIX_CEIL( acbox->yMax );
- }
-
- /* convert to integer pixels if needed */
- if ( bbox_mode == FT_GLYPH_BBOX_TRUNCATE ||
- bbox_mode == FT_GLYPH_BBOX_PIXELS )
- {
- acbox->xMin >>= 6;
- acbox->yMin >>= 6;
- acbox->xMax >>= 6;
- acbox->yMax >>= 6;
- }
- }
- }
- return;
- }
-
-
- /* documentation is in ftglyph.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Glyph_To_Bitmap( FT_Glyph* the_glyph,
- FT_Render_Mode render_mode,
- FT_Vector* origin,
- FT_Bool destroy )
- {
- FT_GlyphSlotRec dummy;
- FT_GlyphSlot_InternalRec dummy_internal;
- FT_Error error = FT_Err_Ok;
- FT_Glyph glyph;
- FT_BitmapGlyph bitmap = NULL;
-
- const FT_Glyph_Class* clazz;
-
-#ifdef FT_CONFIG_OPTION_PIC
- FT_Library library = FT_GLYPH( glyph )->library;
-#endif
-
-
- /* check argument */
- if ( !the_glyph )
- goto Bad;
-
- /* we render the glyph into a glyph bitmap using a `dummy' glyph slot */
- /* then calling FT_Render_Glyph_Internal() */
-
- glyph = *the_glyph;
- if ( !glyph )
- goto Bad;
-
- clazz = glyph->clazz;
-
- /* when called with a bitmap glyph, do nothing and return successfully */
- if ( clazz == FT_BITMAP_GLYPH_CLASS_GET )
- goto Exit;
-
- if ( !clazz || !clazz->glyph_prepare )
- goto Bad;
-
- FT_MEM_ZERO( &dummy, sizeof ( dummy ) );
- FT_MEM_ZERO( &dummy_internal, sizeof ( dummy_internal ) );
- dummy.internal = &dummy_internal;
- dummy.library = glyph->library;
- dummy.format = clazz->glyph_format;
-
- /* create result bitmap glyph */
- error = ft_new_glyph( glyph->library, FT_BITMAP_GLYPH_CLASS_GET,
- (FT_Glyph*)(void*)&bitmap );
- if ( error )
- goto Exit;
-
-#if 1
- /* if `origin' is set, translate the glyph image */
- if ( origin )
- FT_Glyph_Transform( glyph, 0, origin );
-#else
- FT_UNUSED( origin );
-#endif
-
- /* prepare dummy slot for rendering */
- error = clazz->glyph_prepare( glyph, &dummy );
- if ( !error )
- error = FT_Render_Glyph_Internal( glyph->library, &dummy, render_mode );
-
-#if 1
- if ( !destroy && origin )
- {
- FT_Vector v;
-
-
- v.x = -origin->x;
- v.y = -origin->y;
- FT_Glyph_Transform( glyph, 0, &v );
- }
-#endif
-
- if ( error )
- goto Exit;
-
- /* in case of success, copy the bitmap to the glyph bitmap */
- error = ft_bitmap_glyph_init( (FT_Glyph)bitmap, &dummy );
- if ( error )
- goto Exit;
-
- /* copy advance */
- bitmap->root.advance = glyph->advance;
-
- if ( destroy )
- FT_Done_Glyph( glyph );
-
- *the_glyph = FT_GLYPH( bitmap );
-
- Exit:
- if ( error && bitmap )
- FT_Done_Glyph( FT_GLYPH( bitmap ) );
-
- return error;
-
- Bad:
- error = FT_Err_Invalid_Argument;
- goto Exit;
- }
-
-
- /* documentation is in ftglyph.h */
-
- FT_EXPORT_DEF( void )
- FT_Done_Glyph( FT_Glyph glyph )
- {
- if ( glyph )
- {
- FT_Memory memory = glyph->library->memory;
- const FT_Glyph_Class* clazz = glyph->clazz;
-
-
- if ( clazz->glyph_done )
- clazz->glyph_done( glyph );
-
- FT_FREE( glyph );
- }
- }
-
-
-/* END */