diff options
Diffstat (limited to 'src/autofit/afloader.c')
-rw-r--r-- | src/autofit/afloader.c | 936 |
1 files changed, 431 insertions, 505 deletions
diff --git a/src/autofit/afloader.c b/src/autofit/afloader.c index e2b5260f9..69738dd88 100644 --- a/src/autofit/afloader.c +++ b/src/autofit/afloader.c @@ -1,505 +1,431 @@ -#include "afloader.h" -#include "afhints.h" -#include "afglobal.h" -#include "aflatin.h" - - FT_LOCAL_DEF( void ) - af_loader_init( AF_Loader loader, - FT_Memory memory ) - { - FT_ZERO( loader ); - - af_glyph_hints_init( &loader->hints, memory ); - } - - - FT_LOCAL_DEF( FT_Error ) - af_loader_reset( AF_Loader loader, - FT_Face face ) - { - FT_Error error = 0; - - FT_ZERO( loader ); - - loader->face = face; - loader->gloader = face->slot->internal->loader; - loader->globals = (AF_FaceGlobals) face->autohint.data; - - if ( loader->globals == NULL ) - { - error = af_face_globals_new( &face, &loader->globals ); - if ( !error ) - { - face->autohint.data = (FT_Pointer) loader->globals; - face->autohint.finalizer = (FT_Generic_Finalizer) af_face_globals_free; - } - } - return error; - } - - - FT_LOCAL_DEF( void ) - af_loader_done( AF_Loader loader ) - { - loader->face = face; - loader->globals = NULL; - loader->gloader = NULL; - } - - - static FT_Error - af_hinter_load_g( AF_Loader loader, - AF_Scaler scaler, - FT_UInt glyph_index, - FT_Int32 load_flags, - FT_UInt depth ) - { - FT_Error error = 0; - FT_Face face = loader->face; - AF_FaceGlobals globals = loader->globals; - FT_GlyphLoader gloader = loader->gloader; - AF_ScriptMetrics metrics = loader->metrics; - AF_GlyphHints hints = &loader->hints; - FT_GlyphSlot slot = face->glyph; - FT_Slot_Internal internal = slot->internal; - - error = FT_Load_Glyph( face, glyph_index, load_flags ); - if ( error ) - goto Exit; - - loader->transformed = internal->glyph_transformed; - if ( loader->transformed ) - { - FT_Matrix inverse; - - loader->trans_matrix = internal->glyph_matrix; - loader->trans_delta = internal->glyph_delta; - - inverse = loader->trans_matrix; - FT_Matrix_Invert( &inverse ); - FT_Vector_Transform( &loader->trans_delta, &inverse ); - } - - /* set linear metrics */ - slot->linearHoriAdvance = slot->metrics.horiAdvance; - slot->linearVertAdvance = slot->metrics.vertAdvance; - - switch ( slot->format ) - { - case FT_GLYPH_FORMAT_OUTLINE: - /* translate the loaded glyph when an internal transform - * is needed - */ - if ( loader->transformed ) - { - FT_Vector* point = slot->outline.points; - FT_Vector* limit = point + slot->outline.n_points; - - for ( ; point < limit; point++ ) - { - point->x += loader->trans_delta.x; - point->y += loader->trans_delta.y; - } - } - - /* copy the outline points in the loader's current */ - /* extra points which is used to keep original glyph coordinates */ - error = FT_GlyphLoader_CheckPoints( gloader, - slot->outline.n_points + 2, - slot->outline.n_contours ); - if ( error ) - goto Exit; - - FT_ARRAY_COPY( gloader->current.extra_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 phantom points */ - loader->pp1.x = hints->x_delta; - loader->pp1.y = hints->y_delta; - loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance, - hints->x_scale ) + hints->x_delta; - loader->pp2.y = hints->y_delta; - - /* be sure to check for spacing glyphs */ - if ( slot->outline.n_points == 0 ) - goto Hint_Metrics; - - /* now load the slot image into the auto-outline and run the */ - /* automatic hinting process */ - error = metrics->clazz->script_hints_init( hints, scaler, - &gloader->current.outline, - metrics ); - if ( error ) - goto Exit; - - /* apply the hints */ - error = metrics->clazz->script_hints_apply( hints, scaler, - &gloader->current.outline, - metrics ); - if ( error ) - goto Exit; - - /* we now need to hint the metrics according to the change in */ - /* width/positioning that occured during the hinting process */ - { - FT_Pos old_advance, old_rsb, old_lsb, new_lsb; - AF_Edge edge1 = outline->vert_edges; /* leftmost edge */ - AF_Edge edge2 = edge1 + - outline->num_vedges - 1; /* rightmost edge */ - - - old_advance = hinter->pp2.x; - old_rsb = old_advance - edge2->opos; - old_lsb = edge1->opos; - new_lsb = edge1->pos; - - hinter->pp1.x = FT_PIX_ROUND( new_lsb - old_lsb ); - hinter->pp2.x = FT_PIX_ROUND( edge2->pos + old_rsb ); - -#if 0 - /* try to fix certain bad advance computations */ - if ( hinter->pp2.x + hinter->pp1.x == edge2->pos && old_rsb > 4 ) - hinter->pp2.x += 64; -#endif - } - - /* 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 = hinter->pp1; - pp2 = hinter->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 ) - { - pp1 = hinter->pp1; - pp2 = hinter->pp2; - } - else - { - hinter->pp1 = pp1; - hinter->pp2 = pp2; - } - - num_points = gloader->base.outline.n_points; - num_new_points = num_points - num_base_points; - - /* now perform the transform 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* org = gloader->base.extra_points + - num_base_points; - FT_Vector* limit = cur + num_new_points; - - - for ( ; cur < limit; cur++, org++ ) - { - FT_Vector_Transform( cur, &subglyph->transform ); - FT_Vector_Transform( org, &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_Err_Invalid_Composite; - goto Exit; - } - - l += num_base_points; - - /* for now, only use the current point coordinates; */ - /* we may consider another approach in the near future */ - 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: - /* we don't support other formats (yet?) */ - error = AF_Err_Unimplemented_Feature; - } - - Hint_Metrics: - if ( depth == 0 ) - { - FT_BBox bbox; - - - /* transform the hinted outline if needed */ - if ( hinter->transformed ) - FT_Outline_Transform( &gloader->base.outline, &hinter->trans_matrix ); - - /* we must translate our final outline by -pp1.x and compute */ - /* the new metrics */ - if ( hinter->pp1.x ) - FT_Outline_Translate( &gloader->base.outline, -hinter->pp1.x, 0 ); - - FT_Outline_Get_CBox( &gloader->base.outline, &bbox ); - bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); - bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); - bbox.xMax = FT_PIX_CEIL( bbox.xMax ); - bbox.yMax = FT_PIX_CEIL( bbox.yMax ); - - slot->metrics.width = bbox.xMax - bbox.xMin; - slot->metrics.height = bbox.yMax - bbox.yMin; - slot->metrics.horiBearingX = bbox.xMin; - slot->metrics.horiBearingY = bbox.yMax; - - /* for mono-width fonts (like Andale, Courier, etc.) we need */ - /* to keep the original rounded advance width */ - if ( !FT_IS_FIXED_WIDTH( slot->face ) ) - slot->metrics.horiAdvance = hinter->pp2.x - hinter->pp1.x; - else - slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, - x_scale ); - - slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); - - /* now copy outline into glyph slot */ - af_loader_rewind( slot->internal->loader ); - error = af_loader_copy_points( slot->internal->loader, gloader ); - if ( error ) - goto Exit; - - slot->outline = slot->internal->loader->base.outline; - slot->format = FT_GLYPH_FORMAT_OUTLINE; - } - -#ifdef DEBUG_HINTER - af_debug_hinter = hinter; -#endif - - Exit: - return error; - } - - - - - - /* load and hint a given glyph */ - FT_LOCAL_DEF( FT_Error ) - af_loader_load_g( AF_Hinter hinter, - FT_GlyphSlot slot, - FT_Size size, - FT_UInt glyph_index, - FT_Int32 load_flags ) - { - FT_Face face = slot->face; - FT_Error error; - FT_Fixed x_scale = size->metrics.x_scale; - FT_Fixed y_scale = size->metrics.y_scale; - AF_Face_Globals face_globals = FACE_GLOBALS( face ); - FT_Render_Mode hint_mode = FT_LOAD_TARGET_MODE( load_flags ); - - - /* first of all, we need to check that we're using the correct face and */ - /* global hints to load the glyph */ - if ( hinter->face != face || hinter->globals != face_globals ) - { - hinter->face = face; - if ( !face_globals ) - { - error = af_hinter_new_face_globals( hinter, face, 0 ); - if ( error ) - goto Exit; - - } - hinter->globals = FACE_GLOBALS( face ); - face_globals = FACE_GLOBALS( face ); - - } - -#ifdef FT_CONFIG_CHESTER_BLUE_SCALE - - /* try to optimize the y_scale so that the top of non-capital letters - * is aligned on a pixel boundary whenever possible - */ - { - AF_Globals design = &face_globals->design; - FT_Pos shoot = design->blue_shoots[AF_BLUE_SMALL_TOP]; - - - /* the value of 'shoot' will be -1000 if the font doesn't have */ - /* small latin letters; we simply check the sign here... */ - if ( shoot > 0 ) - { - FT_Pos scaled = FT_MulFix( shoot, y_scale ); - FT_Pos fitted = FT_PIX_ROUND( scaled ); - - - if ( scaled != fitted ) - { - /* adjust y_scale - */ - y_scale = FT_MulDiv( y_scale, fitted, scaled ); - - /* adust x_scale - */ - if ( fitted < scaled ) - x_scale -= x_scale / 50; /* x_scale*0.98 with integers */ - } - } - } - -#endif /* FT_CONFIG_CHESTER_BLUE_SCALE */ - - /* now, we must check the current character pixel size to see if we */ - /* need to rescale the global metrics */ - if ( face_globals->x_scale != x_scale || - face_globals->y_scale != y_scale ) - af_hinter_scale_globals( hinter, x_scale, y_scale ); - - af_loader_rewind( hinter->loader ); - - /* reset hinting flags according to load flags and current render target */ - hinter->do_horz_hints = FT_BOOL( !(load_flags & FT_LOAD_NO_AUTOHINT) ); - hinter->do_vert_hints = FT_BOOL( !(load_flags & FT_LOAD_NO_AUTOHINT) ); - -#ifdef DEBUG_HINTER - hinter->do_horz_hints = !af_debug_disable_vert; /* not a bug, the meaning */ - hinter->do_vert_hints = !af_debug_disable_horz; /* of h/v is inverted! */ -#endif - - /* we snap the width of vertical stems for the monochrome and */ - /* horizontal LCD rendering targets only. Corresponds to X snapping. */ - hinter->do_horz_snapping = FT_BOOL( hint_mode == FT_RENDER_MODE_MONO || - hint_mode == FT_RENDER_MODE_LCD ); - - /* we snap the width of horizontal stems for the monochrome and */ - /* vertical LCD rendering targets only. Corresponds to Y snapping. */ - hinter->do_vert_snapping = FT_BOOL( hint_mode == FT_RENDER_MODE_MONO || - hint_mode == FT_RENDER_MODE_LCD_V ); - - hinter->do_stem_adjust = FT_BOOL( hint_mode != FT_RENDER_MODE_LIGHT ); - - load_flags |= FT_LOAD_NO_SCALE - | FT_LOAD_IGNORE_TRANSFORM; - load_flags &= ~FT_LOAD_RENDER; - - error = af_hinter_load( hinter, glyph_index, load_flags, 0 ); - - Exit: - return error; - } - - - static FT_Error - af_loader_load_glyph( AF_Loader loader, - AF_Scaler scaler, - FT_UInt glyph_index ) - { - FT_Error error; - FT_Face face = scaler->face; - - error = af_loader_reset( loader, face ); - if ( !error ) - { - AF_ScriptMetrics metrics; - - error = af_face_globals_get_metrics( globals, gindex, &metrics ); - if ( !error ) - { - metrics->clazz->script_metrics_scale( metrics, scaler ); - - error = af_loader_load_g( loader, scaler, metrics, glyph_index, - /* load_flags */, 0 ); - } - } - return error; - } +#include "afloader.h"
+#include "afhints.h"
+#include "afglobal.h"
+#include "aflatin.h"
+
+ FT_LOCAL_DEF( FT_Error )
+ af_loader_init( AF_Loader loader,
+ FT_Memory memory )
+ {
+ FT_Error error;
+
+ FT_ZERO( loader );
+
+ af_glyph_hints_init( &loader->hints, memory );
+
+ error = FT_GlyphLoader_New( memory, &loader->gloader );
+ if ( !error )
+ {
+ error = FT_GlyphLoader_CreateExtra( loader->gloader );
+ if ( error )
+ {
+ FT_GlyphLoader_Done( loader->gloader );
+ loader->gloader = NULL;
+ }
+ }
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_loader_reset( AF_Loader loader,
+ FT_Face face )
+ {
+ FT_Error error = 0;
+
+ loader->face = face;
+ loader->gloader = face->glyph->internal->loader;
+ loader->globals = (AF_FaceGlobals) face->autohint.data;
+
+ if ( loader->globals == NULL )
+ {
+ error = af_face_globals_new( face, &loader->globals );
+ if ( !error )
+ {
+ face->autohint.data = (FT_Pointer) loader->globals;
+ face->autohint.finalizer = (FT_Generic_Finalizer) af_face_globals_free;
+ }
+ }
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_loader_done( AF_Loader loader )
+ {
+ loader->face = NULL;
+ loader->globals = NULL;
+
+ FT_GlyphLoader_Done( loader->gloader );
+ loader->gloader = NULL;
+ }
+
+
+ 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_Error error = 0;
+ FT_Face face = loader->face;
+ AF_FaceGlobals globals = loader->globals;
+ FT_GlyphLoader gloader = loader->gloader;
+ AF_ScriptMetrics metrics = loader->metrics;
+ AF_GlyphHints hints = &loader->hints;
+ FT_GlyphSlot slot = face->glyph;
+ FT_Slot_Internal internal = slot->internal;
+
+ error = FT_Load_Glyph( face, glyph_index, load_flags );
+ if ( error )
+ goto Exit;
+
+ loader->transformed = internal->glyph_transformed;
+ if ( loader->transformed )
+ {
+ FT_Matrix inverse;
+
+ loader->trans_matrix = internal->glyph_matrix;
+ loader->trans_delta = internal->glyph_delta;
+
+ inverse = loader->trans_matrix;
+ FT_Matrix_Invert( &inverse );
+ FT_Vector_Transform( &loader->trans_delta, &inverse );
+ }
+
+ /* set linear metrics */
+ slot->linearHoriAdvance = slot->metrics.horiAdvance;
+ slot->linearVertAdvance = slot->metrics.vertAdvance;
+
+ switch ( slot->format )
+ {
+ case FT_GLYPH_FORMAT_OUTLINE:
+ /* translate the loaded glyph when an internal transform
+ * is needed
+ */
+ if ( loader->transformed )
+ {
+ FT_Vector* point = slot->outline.points;
+ FT_Vector* limit = point + slot->outline.n_points;
+
+ for ( ; point < limit; point++ )
+ {
+ point->x += loader->trans_delta.x;
+ point->y += loader->trans_delta.y;
+ }
+ }
+
+ /* copy the outline points in the loader's current */
+ /* extra points which is used to keep original glyph coordinates */
+ error = FT_GlyphLoader_CheckPoints( gloader,
+ slot->outline.n_points + 2,
+ slot->outline.n_contours );
+ if ( error )
+ goto Exit;
+
+ FT_ARRAY_COPY( gloader->current.extra_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 phantom points */
+ loader->pp1.x = hints->x_delta;
+ loader->pp1.y = hints->y_delta;
+ loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance,
+ hints->x_scale ) + hints->x_delta;
+ loader->pp2.y = hints->y_delta;
+
+ /* be sure to check for spacing glyphs */
+ if ( slot->outline.n_points == 0 )
+ goto Hint_Metrics;
+
+ /* now load the slot image into the auto-outline and run the */
+ /* automatic hinting process */
+ error = metrics->clazz->script_hints_init( hints,
+ &gloader->current.outline,
+ metrics );
+ if ( error )
+ goto Exit;
+
+ /* apply the hints */
+ metrics->clazz->script_hints_apply( hints,
+ &gloader->current.outline,
+ metrics );
+ /* we now need to hint the metrics according to the change in */
+ /* width/positioning that occured during the hinting process */
+ {
+ FT_Pos old_advance, old_rsb, old_lsb, new_lsb;
+ AF_AxisHints axis = &hints->axis[ AF_DIMENSION_HORZ ];
+ AF_Edge edge1 = axis->edges; /* leftmost edge */
+ AF_Edge edge2 = edge1 + axis->num_edges - 1; /* rightmost edge */
+
+
+ old_advance = loader->pp2.x;
+ old_rsb = old_advance - edge2->opos;
+ old_lsb = edge1->opos;
+ new_lsb = edge1->pos;
+
+ loader->pp1.x = FT_PIX_ROUND( new_lsb - old_lsb );
+ loader->pp2.x = FT_PIX_ROUND( edge2->pos + old_rsb );
+
+#if 0
+ /* try to fix certain bad advance computations */
+ if ( loader->pp2.x + loader->pp1.x == edge2->pos && old_rsb > 4 )
+ loader->pp2.x += 64;
+#endif
+ }
+
+ /* 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 )
+ {
+ pp1 = loader->pp1;
+ pp2 = loader->pp2;
+ }
+ else
+ {
+ loader->pp1 = pp1;
+ loader->pp2 = pp2;
+ }
+
+ num_points = gloader->base.outline.n_points;
+ num_new_points = num_points - num_base_points;
+
+ /* now perform the transform 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* org = gloader->base.extra_points +
+ num_base_points;
+ FT_Vector* limit = cur + num_new_points;
+
+
+ for ( ; cur < limit; cur++, org++ )
+ {
+ FT_Vector_Transform( cur, &subglyph->transform );
+ FT_Vector_Transform( org, &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_Err_Invalid_Composite;
+ goto Exit;
+ }
+
+ l += num_base_points;
+
+ /* for now, only use the current point coordinates; */
+ /* we may consider another approach in the near future */
+ 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:
+ /* we don't support other formats (yet?) */
+ error = FT_Err_Unimplemented_Feature;
+ }
+
+ Hint_Metrics:
+ if ( depth == 0 )
+ {
+ FT_BBox bbox;
+
+
+ /* transform the hinted outline if needed */
+ if ( loader->transformed )
+ FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix );
+
+ /* we must translate our final outline by -pp1.x and compute */
+ /* the new metrics */
+ if ( loader->pp1.x )
+ FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 );
+
+ FT_Outline_Get_CBox( &gloader->base.outline, &bbox );
+
+ bbox.xMin = FT_PIX_FLOOR( bbox.xMin );
+ bbox.yMin = FT_PIX_FLOOR( bbox.yMin );
+ bbox.xMax = FT_PIX_CEIL( bbox.xMax );
+ bbox.yMax = FT_PIX_CEIL( bbox.yMax );
+
+ slot->metrics.width = bbox.xMax - bbox.xMin;
+ slot->metrics.height = bbox.yMax - bbox.yMin;
+ slot->metrics.horiBearingX = bbox.xMin;
+ slot->metrics.horiBearingY = bbox.yMax;
+
+ /* for mono-width fonts (like Andale, Courier, etc.) we need */
+ /* to keep the original rounded advance width */
+#if 0
+ if ( !FT_IS_FIXED_WIDTH( slot->face ) )
+ slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x;
+ else
+ slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance,
+ x_scale );
+#else
+ slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x;
+#endif
+
+ slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance );
+
+ /* now copy outline into glyph slot */
+ FT_GlyphLoader_Rewind( loader->gloader );
+ error = FT_GlyphLoader_CopyPoints( loader->gloader, gloader );
+ if ( error )
+ goto Exit;
+
+ slot->outline = slot->internal->loader->base.outline;
+ slot->format = FT_GLYPH_FORMAT_OUTLINE;
+ }
+
+#ifdef DEBUG_HINTER
+ af_debug_hinter = hinter;
+#endif
+
+ Exit:
+ return error;
+ }
+
+
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_loader_load_glyph( AF_Loader loader,
+ FT_Face face,
+ FT_UInt gindex,
+ FT_UInt32 load_flags )
+ {
+ FT_Error error;
+ FT_Size size = face->size;
+ AF_ScalerRec scaler;
+
+ if ( !size )
+ return FT_Err_Invalid_Argument;
+
+ FT_ZERO( &scaler );
+
+ scaler.face = face;
+ scaler.x_scale = size->metrics.x_scale;
+ scaler.x_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */
+ scaler.y_scale = size->metrics.y_scale;
+ scaler.y_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */
+
+ scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags );
+ scaler.flags = 0; /* XXX: fix this */
+
+ error = af_loader_reset( loader, face );
+ if ( !error )
+ {
+ AF_ScriptMetrics metrics;
+
+ error = af_face_globals_get_metrics( loader->globals, gindex, &metrics );
+ if ( !error )
+ {
+ metrics->clazz->script_metrics_scale( metrics, &scaler );
+
+ load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM;
+ load_flags &= ~FT_LOAD_RENDER;
+
+ error = af_loader_load_g( loader, &scaler, gindex, load_flags, 0 );
+ }
+ }
+ return error;
+ }
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