--- a/misc/libfreetype/src/pfr/pfrobjs.c Tue Jul 16 11:14:27 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,591 +0,0 @@
-/***************************************************************************/
-/* */
-/* pfrobjs.c */
-/* */
-/* FreeType PFR object methods (body). */
-/* */
-/* Copyright 2002, 2003, 2004, 2005, 2006, 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. */
-/* */
-/***************************************************************************/
-
-
-#include "pfrobjs.h"
-#include "pfrload.h"
-#include "pfrgload.h"
-#include "pfrcmap.h"
-#include "pfrsbit.h"
-#include FT_OUTLINE_H
-#include FT_INTERNAL_DEBUG_H
-#include FT_TRUETYPE_IDS_H
-
-#include "pfrerror.h"
-
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_pfr
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** FACE OBJECT METHODS *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- FT_LOCAL_DEF( void )
- pfr_face_done( FT_Face pfrface ) /* PFR_Face */
- {
- PFR_Face face = (PFR_Face)pfrface;
- FT_Memory memory;
-
-
- if ( !face )
- return;
-
- memory = pfrface->driver->root.memory;
-
- /* we don't want dangling pointers */
- pfrface->family_name = NULL;
- pfrface->style_name = NULL;
-
- /* finalize the physical font record */
- pfr_phy_font_done( &face->phy_font, FT_FACE_MEMORY( face ) );
-
- /* no need to finalize the logical font or the header */
- FT_FREE( pfrface->available_sizes );
- }
-
-
- FT_LOCAL_DEF( FT_Error )
- pfr_face_init( FT_Stream stream,
- FT_Face pfrface,
- FT_Int face_index,
- FT_Int num_params,
- FT_Parameter* params )
- {
- PFR_Face face = (PFR_Face)pfrface;
- FT_Error error;
-
- FT_UNUSED( num_params );
- FT_UNUSED( params );
-
-
- /* load the header and check it */
- error = pfr_header_load( &face->header, stream );
- if ( error )
- goto Exit;
-
- if ( !pfr_header_check( &face->header ) )
- {
- FT_TRACE4(( "pfr_face_init: not a valid PFR font\n" ));
- error = PFR_Err_Unknown_File_Format;
- goto Exit;
- }
-
- /* check face index */
- {
- FT_UInt num_faces;
-
-
- error = pfr_log_font_count( stream,
- face->header.log_dir_offset,
- &num_faces );
- if ( error )
- goto Exit;
-
- pfrface->num_faces = num_faces;
- }
-
- if ( face_index < 0 )
- goto Exit;
-
- if ( face_index >= pfrface->num_faces )
- {
- FT_ERROR(( "pfr_face_init: invalid face index\n" ));
- error = PFR_Err_Invalid_Argument;
- goto Exit;
- }
-
- /* load the face */
- error = pfr_log_font_load(
- &face->log_font, stream, face_index,
- face->header.log_dir_offset,
- FT_BOOL( face->header.phy_font_max_size_high != 0 ) );
- if ( error )
- goto Exit;
-
- /* now load the physical font descriptor */
- error = pfr_phy_font_load( &face->phy_font, stream,
- face->log_font.phys_offset,
- face->log_font.phys_size );
- if ( error )
- goto Exit;
-
- /* now set up all root face fields */
- {
- PFR_PhyFont phy_font = &face->phy_font;
-
-
- pfrface->face_index = face_index;
- pfrface->num_glyphs = phy_font->num_chars + 1;
- pfrface->face_flags = FT_FACE_FLAG_SCALABLE;
-
- /* if all characters point to the same gps_offset 0, we */
- /* assume that the font only contains bitmaps */
- {
- FT_UInt nn;
-
-
- for ( nn = 0; nn < phy_font->num_chars; nn++ )
- if ( phy_font->chars[nn].gps_offset != 0 )
- break;
-
- if ( nn == phy_font->num_chars )
- {
- if ( phy_font->num_strikes > 0 )
- pfrface->face_flags = 0; /* not scalable */
- else
- {
- FT_ERROR(( "pfr_face_init: font doesn't contain glyphs\n" ));
- error = PFR_Err_Invalid_File_Format;
- goto Exit;
- }
- }
- }
-
- if ( (phy_font->flags & PFR_PHY_PROPORTIONAL) == 0 )
- pfrface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
-
- if ( phy_font->flags & PFR_PHY_VERTICAL )
- pfrface->face_flags |= FT_FACE_FLAG_VERTICAL;
- else
- pfrface->face_flags |= FT_FACE_FLAG_HORIZONTAL;
-
- if ( phy_font->num_strikes > 0 )
- pfrface->face_flags |= FT_FACE_FLAG_FIXED_SIZES;
-
- if ( phy_font->num_kern_pairs > 0 )
- pfrface->face_flags |= FT_FACE_FLAG_KERNING;
-
- /* If no family name was found in the "undocumented" auxiliary
- * data, use the font ID instead. This sucks but is better than
- * nothing.
- */
- pfrface->family_name = phy_font->family_name;
- if ( pfrface->family_name == NULL )
- pfrface->family_name = phy_font->font_id;
-
- /* note that the style name can be NULL in certain PFR fonts,
- * probably meaning "Regular"
- */
- pfrface->style_name = phy_font->style_name;
-
- pfrface->num_fixed_sizes = 0;
- pfrface->available_sizes = 0;
-
- pfrface->bbox = phy_font->bbox;
- pfrface->units_per_EM = (FT_UShort)phy_font->outline_resolution;
- pfrface->ascender = (FT_Short) phy_font->bbox.yMax;
- pfrface->descender = (FT_Short) phy_font->bbox.yMin;
-
- pfrface->height = (FT_Short)( ( pfrface->units_per_EM * 12 ) / 10 );
- if ( pfrface->height < pfrface->ascender - pfrface->descender )
- pfrface->height = (FT_Short)(pfrface->ascender - pfrface->descender);
-
- if ( phy_font->num_strikes > 0 )
- {
- FT_UInt n, count = phy_font->num_strikes;
- FT_Bitmap_Size* size;
- PFR_Strike strike;
- FT_Memory memory = pfrface->stream->memory;
-
-
- if ( FT_NEW_ARRAY( pfrface->available_sizes, count ) )
- goto Exit;
-
- size = pfrface->available_sizes;
- strike = phy_font->strikes;
- for ( n = 0; n < count; n++, size++, strike++ )
- {
- size->height = (FT_UShort)strike->y_ppm;
- size->width = (FT_UShort)strike->x_ppm;
- size->size = strike->y_ppm << 6;
- size->x_ppem = strike->x_ppm << 6;
- size->y_ppem = strike->y_ppm << 6;
- }
- pfrface->num_fixed_sizes = count;
- }
-
- /* now compute maximum advance width */
- if ( ( phy_font->flags & PFR_PHY_PROPORTIONAL ) == 0 )
- pfrface->max_advance_width = (FT_Short)phy_font->standard_advance;
- else
- {
- FT_Int max = 0;
- FT_UInt count = phy_font->num_chars;
- PFR_Char gchar = phy_font->chars;
-
-
- for ( ; count > 0; count--, gchar++ )
- {
- if ( max < gchar->advance )
- max = gchar->advance;
- }
-
- pfrface->max_advance_width = (FT_Short)max;
- }
-
- pfrface->max_advance_height = pfrface->height;
-
- pfrface->underline_position = (FT_Short)( -pfrface->units_per_EM / 10 );
- pfrface->underline_thickness = (FT_Short)( pfrface->units_per_EM / 30 );
-
- /* create charmap */
- {
- FT_CharMapRec charmap;
-
-
- charmap.face = pfrface;
- charmap.platform_id = TT_PLATFORM_MICROSOFT;
- charmap.encoding_id = TT_MS_ID_UNICODE_CS;
- charmap.encoding = FT_ENCODING_UNICODE;
-
- error = FT_CMap_New( &pfr_cmap_class_rec, NULL, &charmap, NULL );
-
-#if 0
- /* Select default charmap */
- if ( pfrface->num_charmaps )
- pfrface->charmap = pfrface->charmaps[0];
-#endif
- }
-
- /* check whether we've loaded any kerning pairs */
- if ( phy_font->num_kern_pairs )
- pfrface->face_flags |= FT_FACE_FLAG_KERNING;
- }
-
- Exit:
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** SLOT OBJECT METHOD *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- FT_LOCAL_DEF( FT_Error )
- pfr_slot_init( FT_GlyphSlot pfrslot ) /* PFR_Slot */
- {
- PFR_Slot slot = (PFR_Slot)pfrslot;
- FT_GlyphLoader loader = pfrslot->internal->loader;
-
-
- pfr_glyph_init( &slot->glyph, loader );
-
- return 0;
- }
-
-
- FT_LOCAL_DEF( void )
- pfr_slot_done( FT_GlyphSlot pfrslot ) /* PFR_Slot */
- {
- PFR_Slot slot = (PFR_Slot)pfrslot;
-
-
- pfr_glyph_done( &slot->glyph );
- }
-
-
- FT_LOCAL_DEF( FT_Error )
- pfr_slot_load( FT_GlyphSlot pfrslot, /* PFR_Slot */
- FT_Size pfrsize, /* PFR_Size */
- FT_UInt gindex,
- FT_Int32 load_flags )
- {
- PFR_Slot slot = (PFR_Slot)pfrslot;
- PFR_Size size = (PFR_Size)pfrsize;
- FT_Error error;
- PFR_Face face = (PFR_Face)pfrslot->face;
- PFR_Char gchar;
- FT_Outline* outline = &pfrslot->outline;
- FT_ULong gps_offset;
-
-
- if ( gindex > 0 )
- gindex--;
-
- if ( !face || gindex >= face->phy_font.num_chars )
- {
- error = PFR_Err_Invalid_Argument;
- goto Exit;
- }
-
- /* try to load an embedded bitmap */
- if ( ( load_flags & ( FT_LOAD_NO_SCALE | FT_LOAD_NO_BITMAP ) ) == 0 )
- {
- error = pfr_slot_load_bitmap( slot, size, gindex );
- if ( error == 0 )
- goto Exit;
- }
-
- if ( load_flags & FT_LOAD_SBITS_ONLY )
- {
- error = PFR_Err_Invalid_Argument;
- goto Exit;
- }
-
- gchar = face->phy_font.chars + gindex;
- pfrslot->format = FT_GLYPH_FORMAT_OUTLINE;
- outline->n_points = 0;
- outline->n_contours = 0;
- gps_offset = face->header.gps_section_offset;
-
- /* load the glyph outline (FT_LOAD_NO_RECURSE isn't supported) */
- error = pfr_glyph_load( &slot->glyph, face->root.stream,
- gps_offset, gchar->gps_offset, gchar->gps_size );
-
- if ( !error )
- {
- FT_BBox cbox;
- FT_Glyph_Metrics* metrics = &pfrslot->metrics;
- FT_Pos advance;
- FT_Int em_metrics, em_outline;
- FT_Bool scaling;
-
-
- scaling = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 );
-
- /* copy outline data */
- *outline = slot->glyph.loader->base.outline;
-
- outline->flags &= ~FT_OUTLINE_OWNER;
- outline->flags |= FT_OUTLINE_REVERSE_FILL;
-
- if ( size && pfrsize->metrics.y_ppem < 24 )
- outline->flags |= FT_OUTLINE_HIGH_PRECISION;
-
- /* compute the advance vector */
- metrics->horiAdvance = 0;
- metrics->vertAdvance = 0;
-
- advance = gchar->advance;
- em_metrics = face->phy_font.metrics_resolution;
- em_outline = face->phy_font.outline_resolution;
-
- if ( em_metrics != em_outline )
- advance = FT_MulDiv( advance, em_outline, em_metrics );
-
- if ( face->phy_font.flags & PFR_PHY_VERTICAL )
- metrics->vertAdvance = advance;
- else
- metrics->horiAdvance = advance;
-
- pfrslot->linearHoriAdvance = metrics->horiAdvance;
- pfrslot->linearVertAdvance = metrics->vertAdvance;
-
- /* make-up vertical metrics(?) */
- metrics->vertBearingX = 0;
- metrics->vertBearingY = 0;
-
-#if 0 /* some fonts seem to be broken here! */
-
- /* Apply the font matrix, if any. */
- /* TODO: Test existing fonts with unusual matrix */
- /* whether we have to adjust Units per EM. */
- {
- FT_Matrix font_matrix;
-
-
- font_matrix.xx = face->log_font.matrix[0] << 8;
- font_matrix.yx = face->log_font.matrix[1] << 8;
- font_matrix.xy = face->log_font.matrix[2] << 8;
- font_matrix.yy = face->log_font.matrix[3] << 8;
-
- FT_Outline_Transform( outline, &font_matrix );
- }
-#endif
-
- /* scale when needed */
- if ( scaling )
- {
- FT_Int n;
- FT_Fixed x_scale = pfrsize->metrics.x_scale;
- FT_Fixed y_scale = pfrsize->metrics.y_scale;
- FT_Vector* vec = outline->points;
-
-
- /* scale outline points */
- for ( n = 0; n < outline->n_points; n++, vec++ )
- {
- vec->x = FT_MulFix( vec->x, x_scale );
- vec->y = FT_MulFix( vec->y, y_scale );
- }
-
- /* scale the advance */
- metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale );
- metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale );
- }
-
- /* compute the rest of the metrics */
- FT_Outline_Get_CBox( outline, &cbox );
-
- metrics->width = cbox.xMax - cbox.xMin;
- metrics->height = cbox.yMax - cbox.yMin;
- metrics->horiBearingX = cbox.xMin;
- metrics->horiBearingY = cbox.yMax - metrics->height;
- }
-
- Exit:
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** KERNING METHOD *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- FT_LOCAL_DEF( FT_Error )
- pfr_face_get_kerning( FT_Face pfrface, /* PFR_Face */
- FT_UInt glyph1,
- FT_UInt glyph2,
- FT_Vector* kerning )
- {
- PFR_Face face = (PFR_Face)pfrface;
- FT_Error error = PFR_Err_Ok;
- PFR_PhyFont phy_font = &face->phy_font;
- FT_UInt32 code1, code2, pair;
-
-
- kerning->x = 0;
- kerning->y = 0;
-
- if ( glyph1 > 0 )
- glyph1--;
-
- if ( glyph2 > 0 )
- glyph2--;
-
- /* convert glyph indices to character codes */
- if ( glyph1 > phy_font->num_chars ||
- glyph2 > phy_font->num_chars )
- goto Exit;
-
- code1 = phy_font->chars[glyph1].char_code;
- code2 = phy_font->chars[glyph2].char_code;
- pair = PFR_KERN_INDEX( code1, code2 );
-
- /* now search the list of kerning items */
- {
- PFR_KernItem item = phy_font->kern_items;
- FT_Stream stream = pfrface->stream;
-
-
- for ( ; item; item = item->next )
- {
- if ( pair >= item->pair1 && pair <= item->pair2 )
- goto FoundPair;
- }
- goto Exit;
-
- FoundPair: /* we found an item, now parse it and find the value if any */
- if ( FT_STREAM_SEEK( item->offset ) ||
- FT_FRAME_ENTER( item->pair_count * item->pair_size ) )
- goto Exit;
-
- {
- FT_UInt count = item->pair_count;
- FT_UInt size = item->pair_size;
- FT_UInt power = (FT_UInt)ft_highpow2( (FT_UInt32)count );
- FT_UInt probe = power * size;
- FT_UInt extra = count - power;
- FT_Byte* base = stream->cursor;
- FT_Bool twobytes = FT_BOOL( item->flags & 1 );
- FT_Bool twobyte_adj = FT_BOOL( item->flags & 2 );
- FT_Byte* p;
- FT_UInt32 cpair;
-
-
- if ( extra > 0 )
- {
- p = base + extra * size;
-
- if ( twobytes )
- cpair = FT_NEXT_ULONG( p );
- else
- cpair = PFR_NEXT_KPAIR( p );
-
- if ( cpair == pair )
- goto Found;
-
- if ( cpair < pair )
- {
- if ( twobyte_adj )
- p += 2;
- else
- p++;
- base = p;
- }
- }
-
- while ( probe > size )
- {
- probe >>= 1;
- p = base + probe;
-
- if ( twobytes )
- cpair = FT_NEXT_ULONG( p );
- else
- cpair = PFR_NEXT_KPAIR( p );
-
- if ( cpair == pair )
- goto Found;
-
- if ( cpair < pair )
- base += probe;
- }
-
- p = base;
-
- if ( twobytes )
- cpair = FT_NEXT_ULONG( p );
- else
- cpair = PFR_NEXT_KPAIR( p );
-
- if ( cpair == pair )
- {
- FT_Int value;
-
-
- Found:
- if ( twobyte_adj )
- value = FT_PEEK_SHORT( p );
- else
- value = p[0];
-
- kerning->x = item->base_adj + value;
- }
- }
-
- FT_FRAME_EXIT();
- }
-
- Exit:
- return error;
- }
-
-/* END */