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Diffstat (limited to 'src/pfr/pfrobjs.c')
| -rw-r--r-- | src/pfr/pfrobjs.c | 576 |
1 files changed, 0 insertions, 576 deletions
diff --git a/src/pfr/pfrobjs.c b/src/pfr/pfrobjs.c deleted file mode 100644 index 180446d..0000000 --- a/src/pfr/pfrobjs.c +++ /dev/null @@ -1,576 +0,0 @@ -/***************************************************************************/ -/* */ -/* pfrobjs.c */ -/* */ -/* FreeType PFR object methods (body). */ -/* */ -/* Copyright 2002, 2003, 2004, 2005, 2006, 2007 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 "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 = 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 ) - pfrface->face_flags = 0; /* not scalable */ - } - - 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 = 3; - charmap.encoding_id = 1; - charmap.encoding = FT_ENCODING_UNICODE; - - 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 */ |