diff options
Diffstat (limited to 'src/autofit/afloader.c')
| -rw-r--r-- | src/autofit/afloader.c | 226 |
1 files changed, 29 insertions, 197 deletions
diff --git a/src/autofit/afloader.c b/src/autofit/afloader.c index 0fa3c12..7c2fa7c 100644 --- a/src/autofit/afloader.c +++ b/src/autofit/afloader.c @@ -4,7 +4,7 @@ /* */ /* Auto-fitter glyph loading routines (body). */ /* */ -/* Copyright 2003-2009, 2011-2014 by */ +/* Copyright 2003-2015 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -26,38 +26,29 @@ /* Initialize glyph loader. */ - FT_LOCAL_DEF( FT_Error ) - af_loader_init( AF_Module module ) + FT_LOCAL_DEF( void ) + af_loader_init( AF_Loader loader, + AF_GlyphHints hints ) { - AF_Loader loader = module->loader; - FT_Memory memory = module->root.library->memory; - - FT_ZERO( loader ); - af_glyph_hints_init( &loader->hints, memory ); -#ifdef FT_DEBUG_AUTOFIT - _af_debug_hints = &loader->hints; -#endif - return FT_GlyphLoader_New( memory, &loader->gloader ); + loader->hints = hints; } /* Reset glyph loader and compute globals if necessary. */ FT_LOCAL_DEF( FT_Error ) - af_loader_reset( AF_Module module, + af_loader_reset( AF_Loader loader, + AF_Module module, FT_Face face ) { - FT_Error error = FT_Err_Ok; - AF_Loader loader = module->loader; + FT_Error error = FT_Err_Ok; loader->face = face; loader->globals = (AF_FaceGlobals)face->autohint.data; - FT_GlyphLoader_Rewind( loader->gloader ); - if ( loader->globals == NULL ) { error = af_face_globals_new( face, &loader->globals, module ); @@ -77,42 +68,33 @@ /* Finalize glyph loader. */ FT_LOCAL_DEF( void ) - af_loader_done( AF_Module module ) + af_loader_done( AF_Loader loader ) { - AF_Loader loader = module->loader; - - - af_glyph_hints_done( &loader->hints ); - loader->face = NULL; loader->globals = NULL; - -#ifdef FT_DEBUG_AUTOFIT - _af_debug_hints = NULL; -#endif - FT_GlyphLoader_Done( loader->gloader ); - loader->gloader = NULL; + loader->hints = NULL; } - /* Load a single glyph component. This routine calls itself */ - /* recursively, if necessary, and does the main work of */ - /* `af_loader_load_glyph.' */ + /* Do the main work of `af_loader_load_glyph'. Note that we never */ + /* have to deal with composite glyphs as those get loaded into */ + /* FT_GLYPH_FORMAT_OUTLINE by the recursed `FT_Load_Glyph' function. */ + /* In the rare cases where FT_LOAD_NO_RECURSE is set, it implies */ + /* FT_LOAD_NO_SCALE and as such the auto-hinter is never called. */ static FT_Error af_loader_load_g( AF_Loader loader, AF_Scaler scaler, FT_UInt glyph_index, - FT_Int32 load_flags, - FT_UInt depth ) + FT_Int32 load_flags ) { FT_Error error; FT_Face face = loader->face; - FT_GlyphLoader gloader = loader->gloader; AF_StyleMetrics metrics = loader->metrics; - AF_GlyphHints hints = &loader->hints; + AF_GlyphHints hints = loader->hints; FT_GlyphSlot slot = face->glyph; FT_Slot_Internal internal = slot->internal; + FT_GlyphLoader gloader = internal->loader; FT_Int32 flags; @@ -131,8 +113,8 @@ loader->trans_delta = internal->glyph_delta; inverse = loader->trans_matrix; - FT_Matrix_Invert( &inverse ); - FT_Vector_Transform( &loader->trans_delta, &inverse ); + if ( !FT_Matrix_Invert( &inverse ) ) + FT_Vector_Transform( &loader->trans_delta, &inverse ); } switch ( slot->format ) @@ -144,29 +126,6 @@ loader->trans_delta.x, loader->trans_delta.y ); - /* copy the outline points in the loader's current */ - /* extra points which are used to keep original glyph coordinates */ - error = FT_GLYPHLOADER_CHECK_POINTS( gloader, - slot->outline.n_points + 4, - slot->outline.n_contours ); - if ( error ) - goto Exit; - - FT_ARRAY_COPY( gloader->current.outline.points, - slot->outline.points, - slot->outline.n_points ); - - FT_ARRAY_COPY( gloader->current.outline.contours, - slot->outline.contours, - slot->outline.n_contours ); - - FT_ARRAY_COPY( gloader->current.outline.tags, - slot->outline.tags, - slot->outline.n_points ); - - gloader->current.outline.n_points = slot->outline.n_points; - gloader->current.outline.n_contours = slot->outline.n_contours; - /* compute original horizontal phantom points (and ignore */ /* vertical ones) */ loader->pp1.x = hints->x_delta; @@ -192,7 +151,7 @@ if ( writing_system_class->style_hints_apply ) writing_system_class->style_hints_apply( hints, - &gloader->current.outline, + &gloader->base.outline, metrics ); } @@ -267,128 +226,6 @@ slot->rsb_delta = loader->pp2.x - pp2x; } - /* good, we simply add the glyph to our loader's base */ - FT_GlyphLoader_Add( gloader ); - break; - - case FT_GLYPH_FORMAT_COMPOSITE: - { - FT_UInt nn, num_subglyphs = slot->num_subglyphs; - FT_UInt num_base_subgs, start_point; - FT_SubGlyph subglyph; - - - start_point = gloader->base.outline.n_points; - - /* first of all, copy the subglyph descriptors in the glyph loader */ - error = FT_GlyphLoader_CheckSubGlyphs( gloader, num_subglyphs ); - if ( error ) - goto Exit; - - FT_ARRAY_COPY( gloader->current.subglyphs, - slot->subglyphs, - num_subglyphs ); - - gloader->current.num_subglyphs = num_subglyphs; - num_base_subgs = gloader->base.num_subglyphs; - - /* now read each subglyph independently */ - for ( nn = 0; nn < num_subglyphs; nn++ ) - { - FT_Vector pp1, pp2; - FT_Pos x, y; - FT_UInt num_points, num_new_points, num_base_points; - - - /* gloader.current.subglyphs can change during glyph loading due */ - /* to re-allocation -- we must recompute the current subglyph on */ - /* each iteration */ - subglyph = gloader->base.subglyphs + num_base_subgs + nn; - - pp1 = loader->pp1; - pp2 = loader->pp2; - - num_base_points = gloader->base.outline.n_points; - - error = af_loader_load_g( loader, scaler, subglyph->index, - load_flags, depth + 1 ); - if ( error ) - goto Exit; - - /* recompute subglyph pointer */ - subglyph = gloader->base.subglyphs + num_base_subgs + nn; - - if ( !( subglyph->flags & FT_SUBGLYPH_FLAG_USE_MY_METRICS ) ) - { - loader->pp1 = pp1; - loader->pp2 = pp2; - } - - num_points = gloader->base.outline.n_points; - num_new_points = num_points - num_base_points; - - /* now perform the transformation required for this subglyph */ - - if ( subglyph->flags & ( FT_SUBGLYPH_FLAG_SCALE | - FT_SUBGLYPH_FLAG_XY_SCALE | - FT_SUBGLYPH_FLAG_2X2 ) ) - { - FT_Vector* cur = gloader->base.outline.points + - num_base_points; - FT_Vector* limit = cur + num_new_points; - - - for ( ; cur < limit; cur++ ) - FT_Vector_Transform( cur, &subglyph->transform ); - } - - /* apply offset */ - - if ( !( subglyph->flags & FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES ) ) - { - FT_Int k = subglyph->arg1; - FT_UInt l = subglyph->arg2; - FT_Vector* p1; - FT_Vector* p2; - - - if ( start_point + k >= num_base_points || - l >= (FT_UInt)num_new_points ) - { - error = FT_THROW( Invalid_Composite ); - goto Exit; - } - - l += num_base_points; - - /* for now, only use the current point coordinates; */ - /* we eventually may consider another approach */ - p1 = gloader->base.outline.points + start_point + k; - p2 = gloader->base.outline.points + start_point + l; - - x = p1->x - p2->x; - y = p1->y - p2->y; - } - else - { - x = FT_MulFix( subglyph->arg1, hints->x_scale ) + hints->x_delta; - y = FT_MulFix( subglyph->arg2, hints->y_scale ) + hints->y_delta; - - x = FT_PIX_ROUND( x ); - y = FT_PIX_ROUND( y ); - } - - { - FT_Outline dummy = gloader->base.outline; - - - dummy.points += num_base_points; - dummy.n_points = (short)num_new_points; - - FT_Outline_Translate( &dummy, x, y ); - } - } - } break; default: @@ -397,7 +234,6 @@ } Hint_Metrics: - if ( depth == 0 ) { FT_BBox bbox; FT_Vector vvector; @@ -472,18 +308,14 @@ slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); slot->metrics.vertAdvance = FT_PIX_ROUND( slot->metrics.vertAdvance ); - /* now copy outline into glyph slot */ - FT_GlyphLoader_Rewind( internal->loader ); - error = FT_GlyphLoader_CopyPoints( internal->loader, gloader ); - if ( error ) - goto Exit; - +#if 0 /* reassign all outline fields except flags to protect them */ slot->outline.n_contours = internal->loader->base.outline.n_contours; slot->outline.n_points = internal->loader->base.outline.n_points; slot->outline.points = internal->loader->base.outline.points; slot->outline.tags = internal->loader->base.outline.tags; slot->outline.contours = internal->loader->base.outline.contours; +#endif slot->format = FT_GLYPH_FORMAT_OUTLINE; } @@ -496,19 +328,19 @@ /* Load a glyph. */ FT_LOCAL_DEF( FT_Error ) - af_loader_load_glyph( AF_Module module, + af_loader_load_glyph( AF_Loader loader, + AF_Module module, FT_Face face, FT_UInt gindex, FT_Int32 load_flags ) { FT_Error error; FT_Size size = face->size; - AF_Loader loader = module->loader; AF_ScalerRec scaler; if ( !size ) - return FT_THROW( Invalid_Argument ); + return FT_THROW( Invalid_Size_Handle ); FT_ZERO( &scaler ); @@ -521,7 +353,7 @@ scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags ); scaler.flags = 0; /* XXX: fix this */ - error = af_loader_reset( module, face ); + error = af_loader_reset( loader, module, face ); if ( !error ) { AF_StyleMetrics metrics; @@ -558,13 +390,13 @@ if ( writing_system_class->style_hints_init ) { - error = writing_system_class->style_hints_init( &loader->hints, + error = writing_system_class->style_hints_init( loader->hints, metrics ); if ( error ) goto Exit; } - error = af_loader_load_g( loader, &scaler, gindex, load_flags, 0 ); + error = af_loader_load_g( loader, &scaler, gindex, load_flags ); } } Exit: |