Implement gvar table and variable glyf
Split from Ariza's "[subset] TrueType/CFF2 variable font" work on #1594
This commit is contained in:
Michiharu Ariza
Ebrahim Byagowi
parent
79ec65ae10
commit
b9ff43c162
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@ -75,6 +75,7 @@ HB_BASE_sources = \
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hb-ot-hdmx-table.hh \
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hb-ot-head-table.hh \
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hb-ot-hhea-table.hh \
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hb-ot-hmtx-table.cc \
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hb-ot-hmtx-table.hh \
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hb-ot-kern-table.hh \
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hb-ot-layout-base-table.hh \
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@ -136,6 +137,7 @@ HB_BASE_sources = \
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hb-ot-tag.cc \
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hb-ot-var-avar-table.hh \
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hb-ot-var-fvar-table.hh \
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hb-ot-var-gvar-table.hh \
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hb-ot-var-hvar-table.hh \
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hb-ot-var-mvar-table.hh \
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hb-ot-var.cc \
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@ -14,6 +14,7 @@
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#include "hb-ot-color.cc"
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#include "hb-ot-face.cc"
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#include "hb-ot-font.cc"
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#include "hb-ot-hmtx-table.cc"
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#include "hb-ot-layout.cc"
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#include "hb-ot-map.cc"
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#include "hb-ot-math.cc"
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@ -160,7 +160,7 @@ hb_ot_get_glyph_v_origin (hb_font_t *font,
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#endif
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hb_glyph_extents_t extents = {0};
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if (ot_face->glyf->get_extents (glyph, &extents))
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if (ot_face->glyf->get_extents (font, glyph, &extents))
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{
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const OT::vmtx_accelerator_t &vmtx = *ot_face->vmtx;
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hb_position_t tsb = vmtx.get_side_bearing (font, glyph);
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@ -188,7 +188,7 @@ hb_ot_get_glyph_extents (hb_font_t *font,
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#if !defined(HB_NO_OT_FONT_BITMAP) && !defined(HB_NO_COLOR)
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if (!ret) ret = ot_face->sbix->get_extents (font, glyph, extents);
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#endif
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if (!ret) ret = ot_face->glyf->get_extents (glyph, extents);
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if (!ret) ret = ot_face->glyf->get_extents (font, glyph, extents);
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#ifndef HB_NO_OT_FONT_CFF
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if (!ret) ret = ot_face->cff1->get_extents (glyph, extents);
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if (!ret) ret = ot_face->cff2->get_extents (font, glyph, extents);
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@ -1,5 +1,6 @@
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/*
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* Copyright © 2015 Google, Inc.
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* Copyright © 2019 Adobe Inc.
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* Copyright © 2019 Ebrahim Byagowi
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*
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* This is part of HarfBuzz, a text shaping library.
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@ -23,6 +24,7 @@
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Behdad Esfahbod, Garret Rieger, Roderick Sheeter
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* Adobe Author(s): Michiharu Ariza
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*/
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#ifndef HB_OT_GLYF_TABLE_HH
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@ -30,6 +32,10 @@
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#include "hb-open-type.hh"
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#include "hb-ot-head-table.hh"
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#include "hb-ot-hmtx-table.hh"
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#include "hb-ot-var-gvar-table.hh"
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#include <float.h>
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namespace OT {
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@ -54,8 +60,7 @@ struct loca
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}
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protected:
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UnsizedArrayOf<HBUINT8>
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dataZ; /* Location data. */
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UnsizedArrayOf<HBUINT8> dataZ; /* Location data. */
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public:
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DEFINE_SIZE_MIN (0); /* In reality, this is UNBOUNDED() type; but since we always
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* check the size externally, allow Null() object of it by
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@ -111,7 +116,7 @@ struct glyf
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free);
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bool result = plan->add_table (HB_OT_TAG_loca, loca_blob)
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&& _add_head_and_set_loca_version(plan, use_short_loca);
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&& _add_head_and_set_loca_version (plan, use_short_loca);
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hb_blob_destroy (loca_blob);
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return result;
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@ -230,8 +235,7 @@ struct glyf
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if (!glyph_header.is_simple_glyph ()) return; // only for simple glyphs
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unsigned int instruction_len_offset = glyph_header.simple_instruction_len_offset ();
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const HBUINT16 &instruction_len = StructAtOffset<HBUINT16> (&glyph,
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instruction_len_offset);
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const HBUINT16 &instruction_len = StructAtOffset<HBUINT16> (&glyph, instruction_len_offset);
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(HBUINT16 &) instruction_len = 0;
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}
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@ -284,18 +288,9 @@ struct glyf
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bool is_composite_glyph () const { return numberOfContours < 0; }
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bool is_simple_glyph () const { return numberOfContours > 0; }
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void get_extents (hb_glyph_extents_t *extents) const
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{
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extents->x_bearing = hb_min (xMin, xMax);
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extents->y_bearing = hb_max (yMin, yMax);
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extents->width = hb_max (xMin, xMax) - extents->x_bearing;
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extents->height = hb_min (yMin, yMax) - extents->y_bearing;
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}
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bool has_data () const { return numberOfContours; }
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protected:
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HBINT16 numberOfContours;/* If the number of contours is
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HBINT16 numberOfContours; /* If the number of contours is
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* greater than or equal to zero,
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* this is a simple glyph; if negative,
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* this is a composite glyph. */
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@ -303,7 +298,7 @@ struct glyf
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FWORD yMin; /* Minimum y for coordinate data. */
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FWORD xMax; /* Maximum x for coordinate data. */
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FWORD yMax; /* Maximum y for coordinate data. */
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public:
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DEFINE_SIZE_STATIC (10);
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};
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@ -346,6 +341,91 @@ struct glyf
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return size;
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}
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bool is_anchored () const { return (flags & ARGS_ARE_XY_VALUES) == 0; }
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void get_anchor_points (unsigned int &point1, unsigned int &point2) const
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{
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const HBUINT8 *p = &StructAfter<const HBUINT8> (glyphIndex);
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if (flags & ARG_1_AND_2_ARE_WORDS)
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{
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point1 = ((const HBUINT16 *)p)[0];
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point2 = ((const HBUINT16 *)p)[1];
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}
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else
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{
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point1 = p[0];
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point2 = p[1];
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}
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}
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void transform_points (contour_point_vector_t &points) const
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{
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float matrix[4];
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contour_point_t trans;
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if (get_transformation (matrix, trans))
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{
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if (scaled_offsets ())
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{
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points.translate (trans);
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points.transform (matrix);
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}
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else
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{
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points.transform (matrix);
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points.translate (trans);
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}
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}
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}
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protected:
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bool scaled_offsets () const
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{ return (flags & (SCALED_COMPONENT_OFFSET|UNSCALED_COMPONENT_OFFSET)) == SCALED_COMPONENT_OFFSET; }
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bool get_transformation (float (&matrix)[4], contour_point_t &trans) const
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{
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matrix[0] = matrix[3] = 1.f;
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matrix[1] = matrix[2] = 0.f;
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int tx, ty;
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const HBINT8 *p = &StructAfter<const HBINT8> (glyphIndex);
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if (flags & ARG_1_AND_2_ARE_WORDS)
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{
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tx = *(const HBINT16 *)p;
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p += HBINT16::static_size;
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ty = *(const HBINT16 *)p;
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p += HBINT16::static_size;
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}
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else
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{
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tx = *p++;
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ty = *p++;
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}
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if (is_anchored ()) tx = ty = 0;
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trans.init ((float)tx, (float)ty);
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if (flags & WE_HAVE_A_SCALE)
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{
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matrix[0] = matrix[3] = ((const F2DOT14*)p)->to_float ();
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return true;
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}
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else if (flags & WE_HAVE_AN_X_AND_Y_SCALE)
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{
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matrix[0] = ((const F2DOT14*)p)[0].to_float ();
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matrix[3] = ((const F2DOT14*)p)[1].to_float ();
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return true;
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}
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else if (flags & WE_HAVE_A_TWO_BY_TWO)
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{
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matrix[0] = ((const F2DOT14*)p)[0].to_float ();
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matrix[1] = ((const F2DOT14*)p)[1].to_float ();
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matrix[2] = ((const F2DOT14*)p)[2].to_float ();
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matrix[3] = ((const F2DOT14*)p)[3].to_float ();
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return true;
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}
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return tx || ty;
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}
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public:
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// TODO rewrite using new iterator framework if possible
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struct Iterator
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{
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@ -359,8 +439,7 @@ struct glyf
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{
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const CompositeGlyphHeader *possible =
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&StructAfter<CompositeGlyphHeader, CompositeGlyphHeader> (*current);
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if (!in_range (possible))
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return false;
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if (unlikely (!in_range (possible))) return false;
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current = possible;
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return true;
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}
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@ -417,12 +496,19 @@ struct glyf
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glyf_table = hb_sanitize_context_t ().reference_table<glyf> (face);
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num_glyphs = hb_max (1u, loca_table.get_length () / (short_offset ? 2 : 4)) - 1;
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gvar_accel.init (face);
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hmtx_accel.init (face);
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vmtx_accel.init (face);
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}
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void fini ()
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{
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loca_table.destroy ();
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glyf_table.destroy ();
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gvar_accel.fini ();
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hmtx_accel.fini ();
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vmtx_accel.fini ();
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}
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/*
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@ -457,12 +543,323 @@ struct glyf
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FLAG_RESERVED2 = 0x80
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};
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enum phantom_point_index_t {
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PHANTOM_LEFT = 0,
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PHANTOM_RIGHT = 1,
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PHANTOM_TOP = 2,
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PHANTOM_BOTTOM = 3,
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PHANTOM_COUNT = 4
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};
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protected:
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const GlyphHeader &get_header (hb_codepoint_t glyph) const
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{
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unsigned int start_offset, end_offset;
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if (!get_offsets (glyph, &start_offset, &end_offset) || end_offset - start_offset < GlyphHeader::static_size)
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return Null(GlyphHeader);
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return StructAtOffset<GlyphHeader> (glyf_table, start_offset);
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}
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struct x_setter_t
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{
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void set (contour_point_t &point, float v) const { point.x = v; }
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bool is_short (uint8_t flag) const { return (flag & FLAG_X_SHORT) != 0; }
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bool is_same (uint8_t flag) const { return (flag & FLAG_X_SAME) != 0; }
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};
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struct y_setter_t
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{
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void set (contour_point_t &point, float v) const { point.y = v; }
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bool is_short (uint8_t flag) const { return (flag & FLAG_Y_SHORT) != 0; }
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bool is_same (uint8_t flag) const { return (flag & FLAG_Y_SAME) != 0; }
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};
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template <typename T>
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static bool read_points (const HBUINT8 *&p /* IN/OUT */,
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contour_point_vector_t &points_ /* IN/OUT */,
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const range_checker_t &checker)
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{
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T coord_setter;
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float v = 0;
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for (unsigned int i = 0; i < points_.length - PHANTOM_COUNT; i++)
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{
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uint8_t flag = points_[i].flag;
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if (coord_setter.is_short (flag))
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{
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if (unlikely (!checker.in_range (p))) return false;
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if (coord_setter.is_same (flag))
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v += *p++;
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else
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v -= *p++;
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}
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else
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{
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if (!coord_setter.is_same (flag))
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{
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if (unlikely (!checker.in_range ((const HBUINT16 *)p))) return false;
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v += *(const HBINT16 *)p;
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p += HBINT16::static_size;
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}
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}
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coord_setter.set (points_[i], v);
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}
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return true;
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}
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void init_phantom_points (hb_codepoint_t glyph, hb_array_t<contour_point_t> &phantoms /* IN/OUT */) const
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{
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const GlyphHeader &header = get_header (glyph);
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int h_delta = (int)header.xMin - hmtx_accel.get_side_bearing (glyph);
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int v_orig = (int)header.yMax + vmtx_accel.get_side_bearing (glyph);
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unsigned int h_adv = hmtx_accel.get_advance (glyph);
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unsigned int v_adv = vmtx_accel.get_advance (glyph);
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phantoms[PHANTOM_LEFT].x = h_delta;
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phantoms[PHANTOM_RIGHT].x = h_adv + h_delta;
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phantoms[PHANTOM_TOP].y = v_orig;
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phantoms[PHANTOM_BOTTOM].y = -(int)v_adv + v_orig;
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}
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/* for a simple glyph, return contour end points, flags, along with coordinate points
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* for a composite glyph, return pseudo component points
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* in both cases points trailed with four phantom points
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*/
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bool get_contour_points (hb_codepoint_t glyph,
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contour_point_vector_t &points_ /* OUT */,
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hb_vector_t<unsigned int> &end_points_ /* OUT */,
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const bool phantom_only=false) const
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{
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unsigned int num_points = 0;
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unsigned int start_offset, end_offset;
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if (unlikely (!get_offsets (glyph, &start_offset, &end_offset))) return false;
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if (unlikely (end_offset - start_offset < GlyphHeader::static_size))
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{
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/* empty glyph */
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points_.resize (PHANTOM_COUNT);
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for (unsigned int i = 0; i < points_.length; i++) points_[i].init ();
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return true;
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}
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CompositeGlyphHeader::Iterator composite;
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if (get_composite (glyph, &composite))
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{
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/* For a composite glyph, add one pseudo point for each component */
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do { num_points++; } while (composite.move_to_next());
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points_.resize (num_points + PHANTOM_COUNT);
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for (unsigned int i = 0; i < points_.length; i++) points_[i].init ();
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return true;
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}
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const GlyphHeader &glyph_header = StructAtOffset<GlyphHeader> (glyf_table, start_offset);
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int16_t num_contours = (int16_t) glyph_header.numberOfContours;
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const HBUINT16 *end_pts = &StructAfter<HBUINT16, GlyphHeader> (glyph_header);
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range_checker_t checker (glyf_table, start_offset, end_offset);
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num_points = 0;
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if (num_contours > 0)
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{
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if (unlikely (!checker.in_range (&end_pts[num_contours + 1]))) return false;
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num_points = end_pts[num_contours - 1] + 1;
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}
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else if (num_contours < 0)
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{
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CompositeGlyphHeader::Iterator composite;
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if (unlikely (!get_composite (glyph, &composite))) return false;
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do
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{
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num_points++;
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} while (composite.move_to_next());
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}
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points_.resize (num_points + PHANTOM_COUNT);
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for (unsigned int i = 0; i < points_.length; i++) points_[i].init ();
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if ((num_contours <= 0) || phantom_only) return true;
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/* Read simple glyph points if !phantom_only */
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end_points_.resize (num_contours);
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for (int16_t i = 0; i < num_contours; i++)
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end_points_[i] = end_pts[i];
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/* Skip instructions */
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const HBUINT8 *p = &StructAtOffset<HBUINT8> (&end_pts[num_contours+1], end_pts[num_contours]);
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/* Read flags */
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for (unsigned int i = 0; i < num_points; i++)
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{
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if (unlikely (!checker.in_range (p))) return false;
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uint8_t flag = *p++;
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points_[i].flag = flag;
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if ((flag & FLAG_REPEAT) != 0)
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{
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if (unlikely (!checker.in_range (p))) return false;
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unsigned int repeat_count = *p++;
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while ((repeat_count-- > 0) && (++i < num_points))
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points_[i].flag = flag;
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}
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}
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/* Read x & y coordinates */
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return (read_points<x_setter_t> (p, points_, checker) &&
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read_points<y_setter_t> (p, points_, checker));
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}
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struct contour_bounds_t
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{
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contour_bounds_t () { min.x = min.y = FLT_MAX; max.x = max.y = -FLT_MAX; }
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void add (const contour_point_t &p)
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{
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min.x = hb_min (min.x, p.x);
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min.y = hb_min (min.y, p.y);
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max.x = hb_max (max.x, p.x);
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max.y = hb_max (max.y, p.y);
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}
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bool empty () const { return (min.x >= max.x) || (min.y >= max.y); }
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contour_point_t min;
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contour_point_t max;
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};
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|
||||
/* Note: Recursively calls itself.
|
||||
* all_points includes phantom points
|
||||
*/
|
||||
bool get_points_var (hb_codepoint_t glyph,
|
||||
const int *coords, unsigned int coord_count,
|
||||
contour_point_vector_t &all_points /* OUT */,
|
||||
unsigned int depth=0) const
|
||||
{
|
||||
if (unlikely (depth++ > HB_MAX_NESTING_LEVEL)) return false;
|
||||
contour_point_vector_t points;
|
||||
hb_vector_t<unsigned int> end_points;
|
||||
if (unlikely (!get_contour_points (glyph, points, end_points))) return false;
|
||||
hb_array_t<contour_point_t> phantoms = points.sub_array (points.length-PHANTOM_COUNT, PHANTOM_COUNT);
|
||||
init_phantom_points (glyph, phantoms);
|
||||
if (unlikely (!gvar_accel.apply_deltas_to_points (glyph, coords, coord_count, points.as_array (), end_points.as_array ()))) return false;
|
||||
|
||||
unsigned int comp_index = 0;
|
||||
CompositeGlyphHeader::Iterator composite;
|
||||
if (!get_composite (glyph, &composite))
|
||||
{
|
||||
/* simple glyph */
|
||||
all_points.extend (points.as_array ());
|
||||
}
|
||||
else
|
||||
{
|
||||
/* composite glyph */
|
||||
do
|
||||
{
|
||||
contour_point_vector_t comp_points;
|
||||
if (unlikely (!get_points_var (composite.current->glyphIndex, coords, coord_count,
|
||||
comp_points, depth))
|
||||
|| comp_points.length < PHANTOM_COUNT) return false;
|
||||
|
||||
/* Copy phantom points from component if USE_MY_METRICS flag set */
|
||||
if (composite.current->flags & CompositeGlyphHeader::USE_MY_METRICS)
|
||||
for (unsigned int i = 0; i < PHANTOM_COUNT; i++)
|
||||
phantoms[i] = comp_points[comp_points.length - PHANTOM_COUNT + i];
|
||||
|
||||
/* Apply component transformation & translation */
|
||||
composite.current->transform_points (comp_points);
|
||||
|
||||
/* Apply translatation from gvar */
|
||||
comp_points.translate (points[comp_index]);
|
||||
|
||||
if (composite.current->is_anchored ())
|
||||
{
|
||||
unsigned int p1, p2;
|
||||
composite.current->get_anchor_points (p1, p2);
|
||||
if (likely (p1 < all_points.length && p2 < comp_points.length))
|
||||
{
|
||||
contour_point_t delta;
|
||||
delta.init (all_points[p1].x - comp_points[p2].x,
|
||||
all_points[p1].y - comp_points[p2].y);
|
||||
|
||||
comp_points.translate (delta);
|
||||
}
|
||||
}
|
||||
|
||||
all_points.extend (comp_points.sub_array (0, comp_points.length - PHANTOM_COUNT));
|
||||
|
||||
comp_index++;
|
||||
} while (composite.move_to_next());
|
||||
|
||||
all_points.extend (phantoms);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool get_var_extents_and_phantoms (hb_codepoint_t glyph,
|
||||
const int *coords, unsigned int coord_count,
|
||||
hb_glyph_extents_t *extents=nullptr /* OUt */,
|
||||
contour_point_vector_t *phantoms=nullptr /* OUT */) const
|
||||
{
|
||||
contour_point_vector_t all_points;
|
||||
if (unlikely (!get_points_var (glyph, coords, coord_count, all_points) ||
|
||||
all_points.length < PHANTOM_COUNT)) return false;
|
||||
|
||||
/* Undocumented rasterizer behavior:
|
||||
* Shift points horizontally by the updated left side bearing
|
||||
*/
|
||||
contour_point_t delta;
|
||||
delta.init (-all_points[all_points.length - PHANTOM_COUNT + PHANTOM_LEFT].x, 0.f);
|
||||
if (delta.x != 0.f) all_points.translate (delta);
|
||||
|
||||
if (extents != nullptr)
|
||||
{
|
||||
contour_bounds_t bounds;
|
||||
for (unsigned int i = 0; i + PHANTOM_COUNT < all_points.length; i++)
|
||||
bounds.add (all_points[i]);
|
||||
|
||||
if (bounds.min.x > bounds.max.x)
|
||||
{
|
||||
extents->width = 0;
|
||||
extents->x_bearing = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
extents->x_bearing = (int32_t)floorf (bounds.min.x);
|
||||
extents->width = (int32_t)ceilf (bounds.max.x) - extents->x_bearing;
|
||||
}
|
||||
if (bounds.min.y > bounds.max.y)
|
||||
{
|
||||
extents->height = 0;
|
||||
extents->y_bearing = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
extents->y_bearing = (int32_t)ceilf (bounds.max.y);
|
||||
extents->height = (int32_t)floorf (bounds.min.y) - extents->y_bearing;
|
||||
}
|
||||
}
|
||||
if (phantoms != nullptr)
|
||||
{
|
||||
for (unsigned int i = 0; i < PHANTOM_COUNT; i++)
|
||||
(*phantoms)[i] = all_points[all_points.length - PHANTOM_COUNT + i];
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool get_var_metrics (hb_codepoint_t glyph,
|
||||
const int *coords, unsigned int coord_count,
|
||||
contour_point_vector_t &phantoms) const
|
||||
{ return get_var_extents_and_phantoms (glyph, coords, coord_count, nullptr, &phantoms); }
|
||||
|
||||
bool get_extents_var (hb_codepoint_t glyph,
|
||||
const int *coords, unsigned int coord_count,
|
||||
hb_glyph_extents_t *extents) const
|
||||
{ return get_var_extents_and_phantoms (glyph, coords, coord_count, extents); }
|
||||
|
||||
public:
|
||||
/* based on FontTools _g_l_y_f.py::trim */
|
||||
bool remove_padding (unsigned int start_offset,
|
||||
unsigned int *end_offset) const
|
||||
{
|
||||
const char *glyph = ((const char *) glyf_table) + start_offset;
|
||||
unsigned int glyph_length = *end_offset - start_offset;
|
||||
const char *glyph = ((const char *) glyf_table) + start_offset;
|
||||
const GlyphHeader &glyph_header = *hb_bytes_t (glyph, glyph_length).as<GlyphHeader> ();
|
||||
if (!glyph_header.has_data ()) return true;
|
||||
|
||||
|
|
@ -599,18 +996,15 @@ struct glyf
|
|||
unsigned int instruction_len_offset = glyph_header.simple_instruction_len_offset ();
|
||||
if (unlikely (instruction_len_offset + 2 > glyph.length))
|
||||
{
|
||||
DEBUG_MSG (SUBSET, nullptr, "Glyph size is too short, missing field "
|
||||
"instructionLength.");
|
||||
DEBUG_MSG(SUBSET, nullptr, "Glyph size is too short, missing field instructionLength.");
|
||||
return false;
|
||||
}
|
||||
|
||||
const HBUINT16 &instruction_len = StructAtOffset<HBUINT16> (&glyph,
|
||||
instruction_len_offset);
|
||||
const HBUINT16 &instruction_len = StructAtOffset<HBUINT16> (&glyph, instruction_len_offset);
|
||||
/* Out of bounds of the current glyph */
|
||||
if (unlikely (glyph_header.simple_length (instruction_len) > glyph.length))
|
||||
{
|
||||
DEBUG_MSG (SUBSET, nullptr, "The instructions array overruns the "
|
||||
"glyph's boundaries.");
|
||||
DEBUG_MSG(SUBSET, nullptr, "The instructions array overruns the glyph's boundaries.");
|
||||
return false;
|
||||
}
|
||||
*length = (uint16_t) instruction_len;
|
||||
|
|
@ -618,30 +1012,77 @@ struct glyf
|
|||
return true;
|
||||
}
|
||||
|
||||
bool get_extents (hb_codepoint_t glyph, hb_glyph_extents_t *extents) const
|
||||
unsigned int get_advance_var (hb_codepoint_t glyph,
|
||||
const int *coords, unsigned int coord_count,
|
||||
bool vertical) const
|
||||
{
|
||||
bool success = false;
|
||||
contour_point_vector_t phantoms;
|
||||
phantoms.resize (PHANTOM_COUNT);
|
||||
|
||||
if (likely (coord_count == gvar_accel.get_axis_count ()))
|
||||
success = get_var_metrics (glyph, coords, coord_count, phantoms);
|
||||
|
||||
if (unlikely (!success))
|
||||
return vertical? vmtx_accel.get_advance (glyph): hmtx_accel.get_advance (glyph);
|
||||
|
||||
if (vertical)
|
||||
return roundf (phantoms[PHANTOM_TOP].y - phantoms[PHANTOM_BOTTOM].y);
|
||||
else
|
||||
return roundf (phantoms[PHANTOM_RIGHT].x - phantoms[PHANTOM_LEFT].x);
|
||||
}
|
||||
|
||||
int get_side_bearing_var (hb_codepoint_t glyph, const int *coords, unsigned int coord_count, bool vertical) const
|
||||
{
|
||||
hb_glyph_extents_t extents;
|
||||
contour_point_vector_t phantoms;
|
||||
phantoms.resize (PHANTOM_COUNT);
|
||||
|
||||
if (unlikely (!get_var_extents_and_phantoms (glyph, coords, coord_count, &extents, &phantoms)))
|
||||
return vertical? vmtx_accel.get_side_bearing (glyph): hmtx_accel.get_side_bearing (glyph);
|
||||
|
||||
return vertical? (int)ceilf (phantoms[PHANTOM_TOP].y) - extents.y_bearing: (int)floorf (phantoms[PHANTOM_LEFT].x);
|
||||
}
|
||||
|
||||
bool get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const
|
||||
{
|
||||
unsigned int coord_count;
|
||||
const int *coords = hb_font_get_var_coords_normalized (font, &coord_count);
|
||||
if (coords && coord_count > 0 && coord_count == gvar_accel.get_axis_count ())
|
||||
return get_extents_var (glyph, coords, coord_count, extents);
|
||||
|
||||
unsigned int start_offset, end_offset;
|
||||
if (!get_offsets (glyph, &start_offset, &end_offset))
|
||||
return false;
|
||||
|
||||
hb_bytes_t ((const char *) glyf_table + start_offset,
|
||||
end_offset - start_offset).as<GlyphHeader> ()->get_extents (extents);
|
||||
if (end_offset - start_offset < GlyphHeader::static_size)
|
||||
return true; /* Empty glyph; zero extents. */
|
||||
|
||||
const GlyphHeader &glyph_header = StructAtOffset<GlyphHeader> (glyf_table, start_offset);
|
||||
|
||||
/* Undocumented rasterizer behavior: shift glyph to the left by (lsb - xMin), i.e., xMin = lsb */
|
||||
/* extents->x_bearing = hb_min (glyph_header.xMin, glyph_header.xMax); */
|
||||
extents->x_bearing = hmtx_accel.get_side_bearing (glyph);
|
||||
extents->y_bearing = hb_max (glyph_header.yMin, glyph_header.yMax);
|
||||
extents->width = hb_max (glyph_header.xMin, glyph_header.xMax) - hb_min (glyph_header.xMin, glyph_header.xMax);
|
||||
extents->height = hb_min (glyph_header.yMin, glyph_header.yMax) - extents->y_bearing;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
hb_bytes_t bytes_for_glyph (const char *glyf, hb_codepoint_t gid)
|
||||
hb_bytes_t bytes_for_glyph (const char * glyf, hb_codepoint_t gid)
|
||||
{
|
||||
unsigned int start_offset, end_offset;
|
||||
if (unlikely (!(get_offsets (gid, &start_offset, &end_offset) &&
|
||||
remove_padding (start_offset, &end_offset))))
|
||||
{
|
||||
DEBUG_MSG (SUBSET, nullptr, "Unable to get offset or remove padding for %d", gid);
|
||||
DEBUG_MSG(SUBSET, nullptr, "Unable to get offset or remove padding for %d", gid);
|
||||
return hb_bytes_t ();
|
||||
}
|
||||
hb_bytes_t glyph_bytes = hb_bytes_t (glyf + start_offset, end_offset - start_offset);
|
||||
if (!glyph_bytes.as<GlyphHeader> ()->has_data ())
|
||||
{
|
||||
DEBUG_MSG (SUBSET, nullptr, "Empty or invalid glyph size, %d", gid);
|
||||
DEBUG_MSG(SUBSET, nullptr, "Glyph size smaller than minimum header %d", gid);
|
||||
return hb_bytes_t ();
|
||||
}
|
||||
return glyph_bytes;
|
||||
|
|
@ -652,8 +1093,14 @@ struct glyf
|
|||
unsigned int num_glyphs;
|
||||
hb_blob_ptr_t<loca> loca_table;
|
||||
hb_blob_ptr_t<glyf> glyf_table;
|
||||
|
||||
/* variable font support */
|
||||
gvar::accelerator_t gvar_accel;
|
||||
hmtx::accelerator_t hmtx_accel;
|
||||
vmtx::accelerator_t vmtx_accel;
|
||||
};
|
||||
|
||||
|
||||
struct SubsetGlyph
|
||||
{
|
||||
hb_codepoint_t new_gid;
|
||||
|
|
@ -662,22 +1109,22 @@ struct glyf
|
|||
hb_bytes_t dest_start; /* region of source_glyph to copy first */
|
||||
hb_bytes_t dest_end; /* region of source_glyph to copy second */
|
||||
|
||||
|
||||
bool serialize (hb_serialize_context_t *c,
|
||||
const hb_subset_plan_t *plan) const
|
||||
{
|
||||
TRACE_SERIALIZE (this);
|
||||
|
||||
hb_bytes_t dest_glyph = dest_start.copy (c);
|
||||
dest_glyph = hb_bytes_t (&dest_glyph, dest_glyph.length + dest_end.copy (c).length);
|
||||
dest_glyph = hb_bytes_t (&dest_glyph, dest_glyph.length + dest_end.copy(c).length);
|
||||
unsigned int pad_length = padding ();
|
||||
DEBUG_MSG (SUBSET, nullptr, "serialize %d byte glyph, width %d pad %d",
|
||||
dest_glyph.length, dest_glyph.length + pad_length, pad_length);
|
||||
DEBUG_MSG(SUBSET, nullptr, "serialize %d byte glyph, width %d pad %d", dest_glyph.length, dest_glyph.length + pad_length, pad_length);
|
||||
|
||||
HBUINT8 pad;
|
||||
pad = 0;
|
||||
while (pad_length > 0)
|
||||
{
|
||||
c->embed (pad);
|
||||
c->embed(pad);
|
||||
pad_length--;
|
||||
}
|
||||
|
||||
|
|
@ -703,13 +1150,12 @@ struct glyf
|
|||
{
|
||||
DEBUG_MSG (SUBSET, nullptr, "Unable to read instruction length for new_gid %d",
|
||||
new_gid);
|
||||
return ;
|
||||
return;
|
||||
}
|
||||
|
||||
const GlyphHeader& header = *source_glyph.as<GlyphHeader> ();
|
||||
DEBUG_MSG (SUBSET, nullptr, "new_gid %d drop %d instruction bytes "
|
||||
"from %d byte source glyph",
|
||||
new_gid, instruction_len, source_glyph.length);
|
||||
DEBUG_MSG (SUBSET, nullptr, "Unable to read instruction length for new_gid %d",
|
||||
new_gid);
|
||||
if (header.is_composite_glyph ())
|
||||
{
|
||||
/* just chop instructions off the end for composite glyphs */
|
||||
|
|
|
|||
|
|
@ -0,0 +1,54 @@
|
|||
/*
|
||||
* Copyright © 2019 Adobe Inc.
|
||||
*
|
||||
* This is part of HarfBuzz, a text shaping library.
|
||||
*
|
||||
* Permission is hereby granted, without written agreement and without
|
||||
* license or royalty fees, to use, copy, modify, and distribute this
|
||||
* software and its documentation for any purpose, provided that the
|
||||
* above copyright notice and the following two paragraphs appear in
|
||||
* all copies of this software.
|
||||
*
|
||||
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
|
||||
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
|
||||
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
|
||||
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
||||
* DAMAGE.
|
||||
*
|
||||
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
|
||||
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
||||
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
|
||||
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
||||
*
|
||||
* Adobe Author(s): Michiharu Ariza
|
||||
*/
|
||||
|
||||
#include "hb-ot-hmtx-table.hh"
|
||||
#include "hb-ot-glyf-table.hh"
|
||||
|
||||
namespace OT {
|
||||
|
||||
int hmtxvmtx_accelerator_base_t::get_side_bearing_var_tt (hb_font_t *font, hb_codepoint_t glyph, bool vertical)
|
||||
{
|
||||
glyf::accelerator_t glyf_accel;
|
||||
glyf_accel.init (font->face);
|
||||
|
||||
int side_bearing = glyf_accel.get_side_bearing_var (glyph, font->coords, font->num_coords, vertical);
|
||||
glyf_accel.fini ();
|
||||
|
||||
return side_bearing;
|
||||
}
|
||||
|
||||
unsigned int hmtxvmtx_accelerator_base_t::get_advance_var_tt (hb_font_t *font, hb_codepoint_t glyph, bool vertical)
|
||||
{
|
||||
glyf::accelerator_t glyf_accel;
|
||||
glyf_accel.init (font->face);
|
||||
|
||||
unsigned int advance = glyf_accel.get_advance_var (glyph, font->coords, font->num_coords, vertical);
|
||||
glyf_accel.fini ();
|
||||
|
||||
return advance;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -55,14 +55,8 @@ struct LongMetric
|
|||
|
||||
struct hmtxvmtx_accelerator_base_t
|
||||
{
|
||||
static int get_side_bearing_var_tt (hb_font_t *font HB_UNUSED,
|
||||
hb_codepoint_t glyph HB_UNUSED,
|
||||
bool is_vertical HB_UNUSED)
|
||||
{ return 0; } /* Not implemented yet */
|
||||
static unsigned int get_advance_var_tt (hb_font_t *font HB_UNUSED,
|
||||
hb_codepoint_t glyph HB_UNUSED,
|
||||
bool is_vertical HB_UNUSED)
|
||||
{ return 0; } /* Not implemented yet */
|
||||
HB_INTERNAL static int get_side_bearing_var_tt (hb_font_t *font, hb_codepoint_t glyph, bool vertical);
|
||||
HB_INTERNAL static unsigned int get_advance_var_tt (hb_font_t *font, hb_codepoint_t glyph, bool vertical);
|
||||
};
|
||||
|
||||
template <typename T, typename H>
|
||||
|
|
@ -142,10 +136,9 @@ struct hmtxvmtx
|
|||
| hb_map ([c, &_mtx] (unsigned _)
|
||||
{
|
||||
hb_codepoint_t old_gid;
|
||||
if (c->plan->old_gid_for_new_gid (_, &old_gid))
|
||||
return hb_pair (_mtx.get_advance (old_gid), _mtx.get_side_bearing (old_gid));
|
||||
else
|
||||
if (!c->plan->old_gid_for_new_gid (_, &old_gid))
|
||||
return hb_pair (0u, 0);
|
||||
return hb_pair (_mtx.get_advance (old_gid), _mtx.get_side_bearing (old_gid));
|
||||
})
|
||||
;
|
||||
|
||||
|
|
@ -158,9 +151,7 @@ struct hmtxvmtx
|
|||
|
||||
// Amend header num hmetrics
|
||||
if (unlikely (!subset_update_header (c->plan, num_advances)))
|
||||
{
|
||||
return_trace (false);
|
||||
}
|
||||
|
||||
return_trace (true);
|
||||
}
|
||||
|
|
@ -221,8 +212,8 @@ struct hmtxvmtx
|
|||
if (unlikely (glyph >= num_metrics) || !font->num_coords)
|
||||
return side_bearing;
|
||||
|
||||
// if (var_table.get_blob () == &Null (hb_blob_t))
|
||||
// return get_side_bearing_var_tt (font, glyph, T::tableTag == HB_OT_TAG_vmtx);
|
||||
if (var_table.get_blob () == &Null (hb_blob_t))
|
||||
return get_side_bearing_var_tt (font, glyph, T::tableTag == HB_OT_TAG_vmtx);
|
||||
|
||||
return side_bearing + var_table->get_side_bearing_var (glyph, font->coords, font->num_coords); // TODO Optimize?!
|
||||
}
|
||||
|
|
@ -251,8 +242,8 @@ struct hmtxvmtx
|
|||
if (unlikely (glyph >= num_metrics) || !font->num_coords)
|
||||
return advance;
|
||||
|
||||
// if (var_table.get_blob () == &Null (hb_blob_t))
|
||||
// return get_advance_var_tt (font, glyph, T::tableTag == HB_OT_TAG_vmtx);
|
||||
if (var_table.get_blob () == &Null (hb_blob_t))
|
||||
return get_advance_var_tt (font, glyph, T::tableTag == HB_OT_TAG_vmtx);
|
||||
|
||||
return advance + roundf (var_table->get_advance_var (glyph, font->coords, font->num_coords)); // TODO Optimize?!
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,734 @@
|
|||
/*
|
||||
* Copyright © 2019 Adobe Inc.
|
||||
*
|
||||
* This is part of HarfBuzz, a text shaping library.
|
||||
*
|
||||
* Permission is hereby granted, without written agreement and without
|
||||
* license or royalty fees, to use, copy, modify, and distribute this
|
||||
* software and its documentation for any purpose, provided that the
|
||||
* above copyright notice and the following two paragraphs appear in
|
||||
* all copies of this software.
|
||||
*
|
||||
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
|
||||
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
|
||||
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
|
||||
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
||||
* DAMAGE.
|
||||
*
|
||||
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
|
||||
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
||||
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
|
||||
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
||||
*
|
||||
* Adobe Author(s): Michiharu Ariza
|
||||
*/
|
||||
|
||||
#ifndef HB_OT_VAR_GVAR_TABLE_HH
|
||||
#define HB_OT_VAR_GVAR_TABLE_HH
|
||||
|
||||
#include "hb-open-type.hh"
|
||||
#include "hb-ot-glyf-table.hh"
|
||||
#include "hb-ot-var-fvar-table.hh"
|
||||
|
||||
/*
|
||||
* gvar -- Glyph Variation Table
|
||||
* https://docs.microsoft.com/en-us/typography/opentype/spec/gvar
|
||||
*/
|
||||
#define HB_OT_TAG_gvar HB_TAG('g','v','a','r')
|
||||
|
||||
namespace OT {
|
||||
|
||||
struct contour_point_t
|
||||
{
|
||||
void init (float x_=0.f, float y_=0.f) { flag = 0; x = x_; y = y_; }
|
||||
|
||||
void translate (const contour_point_t &p) { x += p.x; y += p.y; }
|
||||
|
||||
uint8_t flag;
|
||||
float x, y;
|
||||
};
|
||||
|
||||
struct contour_point_vector_t : hb_vector_t<contour_point_t>
|
||||
{
|
||||
void extend (const hb_array_t<contour_point_t> &a)
|
||||
{
|
||||
unsigned int old_len = length;
|
||||
resize (old_len + a.length);
|
||||
for (unsigned int i = 0; i < a.length; i++)
|
||||
(*this)[old_len + i] = a[i];
|
||||
}
|
||||
|
||||
void transform (const float (&matrix)[4])
|
||||
{
|
||||
for (unsigned int i = 0; i < length; i++)
|
||||
{
|
||||
contour_point_t &p = (*this)[i];
|
||||
float x_ = p.x * matrix[0] + p.y * matrix[2];
|
||||
p.y = p.x * matrix[1] + p.y * matrix[3];
|
||||
p.x = x_;
|
||||
}
|
||||
}
|
||||
|
||||
void translate (const contour_point_t& delta)
|
||||
{
|
||||
for (unsigned int i = 0; i < length; i++)
|
||||
(*this)[i].translate (delta);
|
||||
}
|
||||
};
|
||||
|
||||
struct range_checker_t
|
||||
{
|
||||
range_checker_t (const void *table_, unsigned int start_offset_, unsigned int end_offset_)
|
||||
: table ((const char*)table_), start_offset (start_offset_), end_offset (end_offset_) {}
|
||||
|
||||
template <typename T>
|
||||
bool in_range (const T *p) const
|
||||
{
|
||||
return ((const char *) p) >= table + start_offset
|
||||
&& ((const char *) p + T::static_size) <= table + end_offset;
|
||||
}
|
||||
|
||||
protected:
|
||||
const char *table;
|
||||
const unsigned int start_offset;
|
||||
const unsigned int end_offset;
|
||||
};
|
||||
|
||||
struct Tuple : UnsizedArrayOf<F2DOT14> {};
|
||||
|
||||
struct TuppleIndex : HBUINT16
|
||||
{
|
||||
enum Flags {
|
||||
EmbeddedPeakTuple = 0x8000u,
|
||||
IntermediateRegion = 0x4000u,
|
||||
PrivatePointNumbers = 0x2000u,
|
||||
TupleIndexMask = 0x0FFFu
|
||||
};
|
||||
|
||||
DEFINE_SIZE_STATIC (2);
|
||||
};
|
||||
|
||||
struct TupleVarHeader
|
||||
{
|
||||
unsigned int get_size (unsigned int axis_count) const
|
||||
{
|
||||
return min_size +
|
||||
(has_peak ()? get_peak_tuple ().get_size (axis_count): 0) +
|
||||
(has_intermediate ()? (get_start_tuple (axis_count).get_size (axis_count) +
|
||||
get_end_tuple (axis_count).get_size (axis_count)): 0);
|
||||
}
|
||||
|
||||
const TupleVarHeader &get_next (unsigned int axis_count) const
|
||||
{ return StructAtOffset<TupleVarHeader> (this, get_size (axis_count)); }
|
||||
|
||||
float calculate_scalar (const int *coords, unsigned int coord_count,
|
||||
const hb_array_t<const F2DOT14> shared_tuples) const
|
||||
{
|
||||
const F2DOT14 *peak_tuple;
|
||||
|
||||
if (has_peak ())
|
||||
peak_tuple = &(get_peak_tuple ()[0]);
|
||||
else
|
||||
{
|
||||
unsigned int index = get_index ();
|
||||
if (unlikely (index * coord_count >= shared_tuples.length))
|
||||
return 0.f;
|
||||
peak_tuple = &shared_tuples[coord_count * index];
|
||||
}
|
||||
|
||||
const F2DOT14 *start_tuple = nullptr;
|
||||
const F2DOT14 *end_tuple = nullptr;
|
||||
if (has_intermediate ())
|
||||
{
|
||||
start_tuple = get_start_tuple (coord_count);
|
||||
end_tuple = get_end_tuple (coord_count);
|
||||
}
|
||||
|
||||
float scalar = 1.f;
|
||||
for (unsigned int i = 0; i < coord_count; i++)
|
||||
{
|
||||
int v = coords[i];
|
||||
int peak = peak_tuple[i];
|
||||
if (!peak || v == peak) continue;
|
||||
|
||||
if (has_intermediate ())
|
||||
{
|
||||
int start = start_tuple[i];
|
||||
int end = end_tuple[i];
|
||||
if (unlikely (start > peak || peak > end ||
|
||||
(start < 0 && end > 0 && peak))) continue;
|
||||
if (v < start || v > end) return 0.f;
|
||||
if (v < peak)
|
||||
{ if (peak != start) scalar *= (float)(v - start) / (peak - start); }
|
||||
else
|
||||
{ if (peak != end) scalar *= (float)(end - v) / (end - peak); }
|
||||
}
|
||||
else if (!v || v < hb_min (0, peak) || v > hb_max (0, peak)) return 0.f;
|
||||
else
|
||||
scalar *= (float)v / peak;
|
||||
}
|
||||
return scalar;
|
||||
}
|
||||
|
||||
unsigned int get_data_size () const { return varDataSize; }
|
||||
|
||||
bool has_peak () const { return (tupleIndex & TuppleIndex::EmbeddedPeakTuple); }
|
||||
bool has_intermediate () const { return (tupleIndex & TuppleIndex::IntermediateRegion); }
|
||||
bool has_private_points () const { return (tupleIndex & TuppleIndex::PrivatePointNumbers); }
|
||||
unsigned int get_index () const { return (tupleIndex & TuppleIndex::TupleIndexMask); }
|
||||
|
||||
protected:
|
||||
const Tuple &get_peak_tuple () const
|
||||
{ return StructAfter<Tuple> (tupleIndex); }
|
||||
const Tuple &get_start_tuple (unsigned int axis_count) const
|
||||
{ return *(const Tuple *)&get_peak_tuple ()[has_peak ()? axis_count: 0]; }
|
||||
const Tuple &get_end_tuple (unsigned int axis_count) const
|
||||
{ return *(const Tuple *)&get_peak_tuple ()[has_peak ()? (axis_count * 2): axis_count]; }
|
||||
|
||||
HBUINT16 varDataSize;
|
||||
TuppleIndex tupleIndex;
|
||||
/* UnsizedArrayOf<F2DOT14> peakTuple - optional */
|
||||
/* UnsizedArrayOf<F2DOT14> intermediateStartTuple - optional */
|
||||
/* UnsizedArrayOf<F2DOT14> intermediateEndTuple - optional */
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_MIN (4);
|
||||
};
|
||||
|
||||
struct TupleVarCount : HBUINT16
|
||||
{
|
||||
bool has_shared_point_numbers () const { return ((*this) & SharedPointNumbers); }
|
||||
unsigned int get_count () const { return (*this) & CountMask; }
|
||||
|
||||
protected:
|
||||
enum Flags {
|
||||
SharedPointNumbers = 0x8000u,
|
||||
CountMask = 0x0FFFu
|
||||
};
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_STATIC (2);
|
||||
};
|
||||
|
||||
struct GlyphVarData
|
||||
{
|
||||
const TupleVarHeader &get_tuple_var_header (void) const
|
||||
{ return StructAfter<TupleVarHeader>(data); }
|
||||
|
||||
struct tuple_iterator_t
|
||||
{
|
||||
void init (const GlyphVarData *var_data_, unsigned int length_, unsigned int axis_count_)
|
||||
{
|
||||
var_data = var_data_;
|
||||
length = length_;
|
||||
index = 0;
|
||||
axis_count = axis_count_;
|
||||
current_tuple = &var_data->get_tuple_var_header ();
|
||||
data_offset = 0;
|
||||
}
|
||||
|
||||
bool get_shared_indices (hb_vector_t<unsigned int> &shared_indices /* OUT */)
|
||||
{
|
||||
if (var_data->has_shared_point_numbers ())
|
||||
{
|
||||
range_checker_t checker (var_data, 0, length);
|
||||
const HBUINT8 *base = &(var_data+var_data->data);
|
||||
const HBUINT8 *p = base;
|
||||
if (!unpack_points (p, shared_indices, checker)) return false;
|
||||
data_offset = p - base;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool is_valid () const
|
||||
{
|
||||
return (index < var_data->tupleVarCount.get_count ()) &&
|
||||
in_range (current_tuple) &&
|
||||
current_tuple->get_size (axis_count);
|
||||
}
|
||||
|
||||
bool move_to_next ()
|
||||
{
|
||||
data_offset += current_tuple->get_data_size ();
|
||||
current_tuple = ¤t_tuple->get_next (axis_count);
|
||||
index++;
|
||||
return is_valid ();
|
||||
}
|
||||
|
||||
bool in_range (const void *p, unsigned int l) const
|
||||
{ return (const char*)p >= (const char*)var_data && (const char*)p+l <= (const char*)var_data + length; }
|
||||
|
||||
template <typename T> bool in_range (const T *p) const { return in_range (p, sizeof (*p)); }
|
||||
|
||||
const HBUINT8 *get_serialized_data () const
|
||||
{ return &(var_data+var_data->data) + data_offset; }
|
||||
|
||||
private:
|
||||
const GlyphVarData *var_data;
|
||||
unsigned int length;
|
||||
unsigned int index;
|
||||
unsigned int axis_count;
|
||||
unsigned int data_offset;
|
||||
|
||||
public:
|
||||
const TupleVarHeader *current_tuple;
|
||||
};
|
||||
|
||||
static bool get_tuple_iterator (const GlyphVarData *var_data,
|
||||
unsigned int length,
|
||||
unsigned int axis_count,
|
||||
hb_vector_t<unsigned int> &shared_indices /* OUT */,
|
||||
tuple_iterator_t *iterator /* OUT */)
|
||||
{
|
||||
iterator->init (var_data, length, axis_count);
|
||||
if (!iterator->get_shared_indices (shared_indices))
|
||||
return false;
|
||||
return iterator->is_valid ();
|
||||
}
|
||||
|
||||
bool has_shared_point_numbers () const { return tupleVarCount.has_shared_point_numbers (); }
|
||||
|
||||
static bool unpack_points (const HBUINT8 *&p /* IN/OUT */,
|
||||
hb_vector_t<unsigned int> &points /* OUT */,
|
||||
const range_checker_t &check)
|
||||
{
|
||||
enum packed_point_flag_t
|
||||
{
|
||||
POINTS_ARE_WORDS = 0x80,
|
||||
POINT_RUN_COUNT_MASK = 0x7F
|
||||
};
|
||||
|
||||
if (!check.in_range (p)) return false;
|
||||
uint16_t count = *p++;
|
||||
if (count & POINTS_ARE_WORDS)
|
||||
{
|
||||
if (!check.in_range (p)) return false;
|
||||
count = ((count & POINT_RUN_COUNT_MASK) << 8) | *p++;
|
||||
}
|
||||
points.resize (count);
|
||||
|
||||
unsigned int n = 0;
|
||||
uint16_t i = 0;
|
||||
while (i < count)
|
||||
{
|
||||
if (!check.in_range (p)) return false;
|
||||
uint16_t j;
|
||||
uint8_t control = *p++;
|
||||
uint16_t run_count = (control & POINT_RUN_COUNT_MASK) + 1;
|
||||
if (control & POINTS_ARE_WORDS)
|
||||
{
|
||||
for (j = 0; j < run_count && i < count; j++, i++)
|
||||
{
|
||||
if (!check.in_range ((const HBUINT16 *)p)) return false;
|
||||
n += *(const HBUINT16 *)p;
|
||||
points[i] = n;
|
||||
p += HBUINT16::static_size;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
for (j = 0; j < run_count && i < count; j++, i++)
|
||||
{
|
||||
if (!check.in_range (p)) return false;
|
||||
n += *p++;
|
||||
points[i] = n;
|
||||
}
|
||||
}
|
||||
if (j < run_count) return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool unpack_deltas (const HBUINT8 *&p /* IN/OUT */,
|
||||
hb_vector_t<int> &deltas /* IN/OUT */,
|
||||
const range_checker_t &check)
|
||||
{
|
||||
enum packed_delta_flag_t
|
||||
{
|
||||
DELTAS_ARE_ZERO = 0x80,
|
||||
DELTAS_ARE_WORDS = 0x40,
|
||||
DELTA_RUN_COUNT_MASK = 0x3F
|
||||
};
|
||||
|
||||
unsigned int i = 0;
|
||||
unsigned int count = deltas.length;
|
||||
while (i < count)
|
||||
{
|
||||
if (!check.in_range (p)) return false;
|
||||
uint16_t j;
|
||||
uint8_t control = *p++;
|
||||
uint16_t run_count = (control & DELTA_RUN_COUNT_MASK) + 1;
|
||||
if (control & DELTAS_ARE_ZERO)
|
||||
{
|
||||
for (j = 0; j < run_count && i < count; j++, i++)
|
||||
deltas[i] = 0;
|
||||
}
|
||||
else if (control & DELTAS_ARE_WORDS)
|
||||
{
|
||||
for (j = 0; j < run_count && i < count; j++, i++)
|
||||
{
|
||||
if (!check.in_range ((const HBUINT16 *)p))
|
||||
return false;
|
||||
deltas[i] = *(const HBINT16 *)p;
|
||||
p += HBUINT16::static_size;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
for (j = 0; j < run_count && i < count; j++, i++)
|
||||
{
|
||||
if (!check.in_range (p))
|
||||
return false;
|
||||
deltas[i] = *(const HBINT8 *)p++;
|
||||
}
|
||||
}
|
||||
if (j < run_count)
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
protected:
|
||||
TupleVarCount tupleVarCount;
|
||||
OffsetTo<HBUINT8> data;
|
||||
/* TupleVarHeader tupleVarHeaders[] */
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_MIN (4);
|
||||
};
|
||||
|
||||
struct gvar
|
||||
{
|
||||
static constexpr hb_tag_t tableTag = HB_OT_TAG_gvar;
|
||||
|
||||
bool sanitize_shallow (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (c->check_struct (this) && (version.major == 1) &&
|
||||
(glyphCount == c->get_num_glyphs ()) &&
|
||||
c->check_array (&(this+sharedTuples), axisCount * sharedTupleCount) &&
|
||||
(is_long_offset ()?
|
||||
c->check_array (get_long_offset_array (), glyphCount+1):
|
||||
c->check_array (get_short_offset_array (), glyphCount+1)) &&
|
||||
c->check_array (((const HBUINT8*)&(this+dataZ)) + get_offset (0),
|
||||
get_offset (glyphCount) - get_offset (0)));
|
||||
}
|
||||
|
||||
/* GlyphVarData not sanitized here; must be checked while accessing each glyph varation data */
|
||||
bool sanitize (hb_sanitize_context_t *c) const
|
||||
{ return sanitize_shallow (c); }
|
||||
|
||||
bool subset (hb_subset_context_t *c) const
|
||||
{
|
||||
TRACE_SUBSET (this);
|
||||
|
||||
gvar *out = c->serializer->allocate_min<gvar> ();
|
||||
if (unlikely (!out)) return_trace (false);
|
||||
|
||||
out->version.major = 1;
|
||||
out->version.minor = 0;
|
||||
out->axisCount = axisCount;
|
||||
out->sharedTupleCount = sharedTupleCount;
|
||||
|
||||
unsigned int num_glyphs = c->plan->num_output_glyphs ();
|
||||
out->glyphCount = num_glyphs;
|
||||
|
||||
unsigned int subset_data_size = 0;
|
||||
for (hb_codepoint_t gid = 0; gid < num_glyphs; gid++)
|
||||
{
|
||||
hb_codepoint_t old_gid;
|
||||
if (!c->plan->old_gid_for_new_gid (gid, &old_gid)) continue;
|
||||
subset_data_size += get_glyph_var_data_length (old_gid);
|
||||
}
|
||||
|
||||
bool long_offset = subset_data_size & ~0xFFFFu;
|
||||
out->flags = long_offset? 1: 0;
|
||||
|
||||
HBUINT8 *subset_offsets = c->serializer->allocate_size<HBUINT8> ((long_offset? 4: 2) * (num_glyphs+1));
|
||||
if (!subset_offsets) return_trace (false);
|
||||
|
||||
/* shared tuples */
|
||||
if (!sharedTupleCount || !sharedTuples)
|
||||
out->sharedTuples = 0;
|
||||
else
|
||||
{
|
||||
unsigned int shared_tuple_size = F2DOT14::static_size * axisCount * sharedTupleCount;
|
||||
F2DOT14 *tuples = c->serializer->allocate_size<F2DOT14> (shared_tuple_size);
|
||||
if (!tuples) return_trace (false);
|
||||
out->sharedTuples = (char *)tuples - (char *)out;
|
||||
memcpy (tuples, &(this+sharedTuples), shared_tuple_size);
|
||||
}
|
||||
|
||||
char *subset_data = c->serializer->allocate_size<char>(subset_data_size);
|
||||
if (!subset_data) return_trace (false);
|
||||
out->dataZ = subset_data - (char *)out;
|
||||
|
||||
unsigned int glyph_offset = 0;
|
||||
for (hb_codepoint_t gid = 0; gid < num_glyphs; gid++)
|
||||
{
|
||||
hb_codepoint_t old_gid;
|
||||
unsigned int length = c->plan->old_gid_for_new_gid (gid, &old_gid)? get_glyph_var_data_length (old_gid): 0;
|
||||
|
||||
if (long_offset)
|
||||
((HBUINT32 *)subset_offsets)[gid] = glyph_offset;
|
||||
else
|
||||
((HBUINT16 *)subset_offsets)[gid] = glyph_offset / 2;
|
||||
|
||||
if (length > 0) memcpy (subset_data, get_glyph_var_data (old_gid), length);
|
||||
subset_data += length;
|
||||
glyph_offset += length;
|
||||
}
|
||||
if (long_offset)
|
||||
((HBUINT32 *)subset_offsets)[num_glyphs] = glyph_offset;
|
||||
else
|
||||
((HBUINT16 *)subset_offsets)[num_glyphs] = glyph_offset / 2;
|
||||
|
||||
return_trace (true);
|
||||
}
|
||||
|
||||
protected:
|
||||
const GlyphVarData *get_glyph_var_data (hb_codepoint_t glyph) const
|
||||
{
|
||||
unsigned int start_offset = get_offset (glyph);
|
||||
unsigned int end_offset = get_offset (glyph+1);
|
||||
|
||||
if ((start_offset == end_offset) ||
|
||||
unlikely ((start_offset > get_offset (glyphCount)) ||
|
||||
(start_offset + GlyphVarData::min_size > end_offset)))
|
||||
return &Null(GlyphVarData);
|
||||
return &(((unsigned char *)this+start_offset)+dataZ);
|
||||
}
|
||||
|
||||
bool is_long_offset () const { return (flags & 1)!=0; }
|
||||
|
||||
unsigned int get_offset (unsigned int i) const
|
||||
{
|
||||
if (is_long_offset ())
|
||||
return get_long_offset_array ()[i];
|
||||
else
|
||||
return get_short_offset_array ()[i] * 2;
|
||||
}
|
||||
|
||||
unsigned int get_glyph_var_data_length (unsigned int glyph) const
|
||||
{
|
||||
unsigned int end_offset = get_offset (glyph+1);
|
||||
unsigned int start_offset = get_offset (glyph);
|
||||
if (unlikely (start_offset > end_offset || end_offset > get_offset(glyphCount)))
|
||||
return 0;
|
||||
return end_offset - start_offset;
|
||||
}
|
||||
|
||||
const HBUINT32 *get_long_offset_array () const { return (const HBUINT32 *)&offsetZ; }
|
||||
const HBUINT16 *get_short_offset_array () const { return (const HBUINT16 *)&offsetZ; }
|
||||
|
||||
public:
|
||||
struct accelerator_t
|
||||
{
|
||||
void init (hb_face_t *face)
|
||||
{
|
||||
memset (this, 0, sizeof (accelerator_t));
|
||||
|
||||
gvar_table = hb_sanitize_context_t ().reference_table<gvar> (face);
|
||||
hb_blob_ptr_t<fvar> fvar_table = hb_sanitize_context_t ().reference_table<fvar> (face);
|
||||
unsigned int axis_count = fvar_table->get_axis_count ();
|
||||
fvar_table.destroy ();
|
||||
|
||||
if (unlikely ((gvar_table->glyphCount != face->get_num_glyphs ()) ||
|
||||
(gvar_table->axisCount != axis_count)))
|
||||
fini ();
|
||||
|
||||
unsigned int num_shared_coord = gvar_table->sharedTupleCount * gvar_table->axisCount;
|
||||
shared_tuples.resize (num_shared_coord);
|
||||
for (unsigned int i = 0; i < num_shared_coord; i++)
|
||||
shared_tuples[i] = (&(gvar_table+gvar_table->sharedTuples))[i];
|
||||
}
|
||||
|
||||
void fini ()
|
||||
{
|
||||
gvar_table.destroy ();
|
||||
shared_tuples.fini ();
|
||||
}
|
||||
|
||||
private:
|
||||
struct x_getter { static float get (const contour_point_t &p) { return p.x; } };
|
||||
struct y_getter { static float get (const contour_point_t &p) { return p.y; } };
|
||||
|
||||
template <typename T>
|
||||
static float infer_delta (const hb_array_t<contour_point_t> points,
|
||||
const hb_array_t<contour_point_t> deltas,
|
||||
unsigned int target, unsigned int prev, unsigned int next)
|
||||
{
|
||||
float target_val = T::get (points[target]);
|
||||
float prev_val = T::get (points[prev]);
|
||||
float next_val = T::get (points[next]);
|
||||
float prev_delta = T::get (deltas[prev]);
|
||||
float next_delta = T::get (deltas[next]);
|
||||
|
||||
if (prev_val == next_val)
|
||||
return (prev_delta == next_delta)? prev_delta: 0.f;
|
||||
else if (target_val <= hb_min (prev_val, next_val))
|
||||
return (prev_val < next_val) ? prev_delta: next_delta;
|
||||
else if (target_val >= hb_max (prev_val, next_val))
|
||||
return (prev_val > next_val)? prev_delta: next_delta;
|
||||
|
||||
/* linear interpolation */
|
||||
float r = (target_val - prev_val) / (next_val - prev_val);
|
||||
return (1.f - r) * prev_delta + r * next_delta;
|
||||
}
|
||||
|
||||
static unsigned int next_index (unsigned int i, unsigned int start, unsigned int end)
|
||||
{ return (i >= end)? start: (i + 1); }
|
||||
|
||||
public:
|
||||
bool apply_deltas_to_points (hb_codepoint_t glyph,
|
||||
const int *coords, unsigned int coord_count,
|
||||
const hb_array_t<contour_point_t> points,
|
||||
const hb_array_t<unsigned int> end_points) const
|
||||
{
|
||||
if (unlikely (coord_count != gvar_table->axisCount)) return false;
|
||||
|
||||
const GlyphVarData *var_data = gvar_table->get_glyph_var_data (glyph);
|
||||
if (var_data == &Null(GlyphVarData)) return true;
|
||||
hb_vector_t <unsigned int> shared_indices;
|
||||
GlyphVarData::tuple_iterator_t iterator;
|
||||
if (!GlyphVarData::get_tuple_iterator (var_data,
|
||||
gvar_table->get_glyph_var_data_length (glyph),
|
||||
gvar_table->axisCount,
|
||||
shared_indices,
|
||||
&iterator))
|
||||
return false;
|
||||
|
||||
/* Save original points for inferred delta calculation */
|
||||
contour_point_vector_t orig_points;
|
||||
orig_points.resize (points.length);
|
||||
for (unsigned int i = 0; i < orig_points.length; i++)
|
||||
orig_points[i] = points[i];
|
||||
|
||||
contour_point_vector_t deltas; /* flag is used to indicate referenced point */
|
||||
deltas.resize (points.length);
|
||||
|
||||
do {
|
||||
float scalar = iterator.current_tuple->calculate_scalar (coords, coord_count, shared_tuples.as_array ());
|
||||
if (scalar == 0.f) continue;
|
||||
const HBUINT8 *p = iterator.get_serialized_data ();
|
||||
unsigned int length = iterator.current_tuple->get_data_size ();
|
||||
if (unlikely (!iterator.in_range (p, length)))
|
||||
return false;
|
||||
|
||||
range_checker_t checker (p, 0, length);
|
||||
hb_vector_t <unsigned int> private_indices;
|
||||
if (iterator.current_tuple->has_private_points () &&
|
||||
!GlyphVarData::unpack_points (p, private_indices, checker))
|
||||
return false;
|
||||
const hb_array_t<unsigned int> &indices = private_indices.length? private_indices: shared_indices;
|
||||
|
||||
bool apply_to_all = (indices.length == 0);
|
||||
unsigned int num_deltas = apply_to_all? points.length: indices.length;
|
||||
hb_vector_t <int> x_deltas;
|
||||
x_deltas.resize (num_deltas);
|
||||
if (!GlyphVarData::unpack_deltas (p, x_deltas, checker))
|
||||
return false;
|
||||
hb_vector_t <int> y_deltas;
|
||||
y_deltas.resize (num_deltas);
|
||||
if (!GlyphVarData::unpack_deltas (p, y_deltas, checker))
|
||||
return false;
|
||||
|
||||
for (unsigned int i = 0; i < deltas.length; i++)
|
||||
deltas[i].init ();
|
||||
for (unsigned int i = 0; i < num_deltas; i++)
|
||||
{
|
||||
unsigned int pt_index = apply_to_all? i: indices[i];
|
||||
deltas[pt_index].flag = 1; /* this point is referenced, i.e., explicit deltas specified */
|
||||
deltas[pt_index].x += x_deltas[i] * scalar;
|
||||
deltas[pt_index].y += y_deltas[i] * scalar;
|
||||
}
|
||||
|
||||
/* infer deltas for unreferenced points */
|
||||
unsigned int start_point = 0;
|
||||
for (unsigned int c = 0; c < end_points.length; c++)
|
||||
{
|
||||
unsigned int end_point = end_points[c];
|
||||
unsigned int i, j;
|
||||
|
||||
/* Check the number of unreferenced points in a contour. If no unref points or no ref points, nothing to do. */
|
||||
unsigned int unref_count = 0;
|
||||
for (i = start_point; i <= end_point; i++)
|
||||
if (!deltas[i].flag) unref_count++;
|
||||
if (unref_count == 0 || unref_count > end_point - start_point)
|
||||
goto no_more_gaps;
|
||||
|
||||
j = start_point;
|
||||
for (;;)
|
||||
{
|
||||
/* Locate the next gap of unreferenced points between two referenced points prev and next.
|
||||
* Note that a gap may wrap around at left (start_point) and/or at right (end_point).
|
||||
*/
|
||||
unsigned int prev, next;
|
||||
for (;;) {
|
||||
i = j;
|
||||
j = next_index (i, start_point, end_point);
|
||||
if (deltas[i].flag && !deltas[j].flag) break;
|
||||
}
|
||||
prev = j = i;
|
||||
for (;;) {
|
||||
i = j;
|
||||
j = next_index (i, start_point, end_point);
|
||||
if (!deltas[i].flag && deltas[j].flag) break;
|
||||
}
|
||||
next = j;
|
||||
/* Infer deltas for all unref points in the gap between prev and next */
|
||||
i = prev;
|
||||
for (;;) {
|
||||
i = next_index (i, start_point, end_point);
|
||||
if (i == next) break;
|
||||
deltas[i].x = infer_delta<x_getter> (orig_points.as_array (), deltas.as_array (), i, prev, next);
|
||||
deltas[i].y = infer_delta<y_getter> (orig_points.as_array (), deltas.as_array (), i, prev, next);
|
||||
if (--unref_count == 0) goto no_more_gaps;
|
||||
}
|
||||
}
|
||||
no_more_gaps:
|
||||
start_point = end_point + 1;
|
||||
}
|
||||
|
||||
/* apply specified / inferred deltas to points */
|
||||
for (unsigned int i = 0; i < points.length; i++)
|
||||
{
|
||||
points[i].x += (float) roundf (deltas[i].x);
|
||||
points[i].y += (float) roundf (deltas[i].y);
|
||||
}
|
||||
} while (iterator.move_to_next ());
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
unsigned int get_axis_count () const { return gvar_table->axisCount; }
|
||||
|
||||
protected:
|
||||
const GlyphVarData *get_glyph_var_data (hb_codepoint_t glyph) const
|
||||
{ return gvar_table->get_glyph_var_data (glyph); }
|
||||
|
||||
private:
|
||||
hb_blob_ptr_t<gvar> gvar_table;
|
||||
hb_vector_t<F2DOT14> shared_tuples;
|
||||
};
|
||||
|
||||
protected:
|
||||
FixedVersion<> version; /* Version of gvar table. Set to 0x00010000u. */
|
||||
HBUINT16 axisCount;
|
||||
HBUINT16 sharedTupleCount;
|
||||
LOffsetTo<F2DOT14> sharedTuples; /* LOffsetTo<UnsizedArrayOf<Tupple>> */
|
||||
HBUINT16 glyphCount;
|
||||
HBUINT16 flags;
|
||||
LOffsetTo<GlyphVarData> dataZ; /* Array of GlyphVarData */
|
||||
UnsizedArrayOf<HBUINT8> offsetZ; /* Array of 16-bit or 32-bit (glyphCount+1) offsets */
|
||||
|
||||
public:
|
||||
DEFINE_SIZE_MIN (20);
|
||||
};
|
||||
|
||||
struct gvar_accelerator_t : gvar::accelerator_t {};
|
||||
|
||||
} /* namespace OT */
|
||||
|
||||
#endif /* HB_OT_VAR_GVAR_TABLE_HH */
|
||||
|
|
@ -88,6 +88,7 @@ TEST_PROGS += \
|
|||
test-ot-metrics \
|
||||
test-ot-tag \
|
||||
test-ot-extents-cff \
|
||||
test-ot-metrics-tt-var \
|
||||
$(NULL)
|
||||
|
||||
|
||||
|
|
|
|||
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
|
@ -0,0 +1,250 @@
|
|||
/*
|
||||
* Copyright © 2019 Adobe Inc.
|
||||
*
|
||||
* This is part of HarfBuzz, a text shaping library.
|
||||
*
|
||||
* Permission is hereby granted, without written agreement and without
|
||||
* license or royalty fees, to use, copy, modify, and distribute this
|
||||
* software and its documentation for any purpose, provided that the
|
||||
* above copyright notice and the following two paragraphs appear in
|
||||
* all copies of this software.
|
||||
*
|
||||
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
|
||||
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
|
||||
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
|
||||
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
||||
* DAMAGE.
|
||||
*
|
||||
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
|
||||
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
||||
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
|
||||
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
||||
*
|
||||
* Adobe Author(s): Michiharu Ariza
|
||||
*/
|
||||
|
||||
#include "hb-test.h"
|
||||
#include <hb-ot.h>
|
||||
|
||||
/* Unit tests for glyph advance widths and extents of TrueType variable fonts */
|
||||
|
||||
static void
|
||||
test_extents_tt_var (void)
|
||||
{
|
||||
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
|
||||
g_assert (face);
|
||||
hb_font_t *font = hb_font_create (face);
|
||||
hb_face_destroy (face);
|
||||
g_assert (font);
|
||||
hb_ot_font_set_funcs (font);
|
||||
|
||||
hb_glyph_extents_t extents;
|
||||
hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
|
||||
g_assert (result);
|
||||
|
||||
g_assert_cmpint (extents.x_bearing, ==, 10);
|
||||
g_assert_cmpint (extents.y_bearing, ==, 846);
|
||||
g_assert_cmpint (extents.width, ==, 500);
|
||||
g_assert_cmpint (extents.height, ==, -846);
|
||||
|
||||
float coords[1] = { 500.0f };
|
||||
hb_font_set_var_coords_design (font, coords, 1);
|
||||
result = hb_font_get_glyph_extents (font, 2, &extents);
|
||||
g_assert (result);
|
||||
|
||||
g_assert_cmpint (extents.x_bearing, ==, 0);
|
||||
g_assert_cmpint (extents.y_bearing, ==, 874);
|
||||
g_assert_cmpint (extents.width, ==, 551);
|
||||
g_assert_cmpint (extents.height, ==, -874);
|
||||
|
||||
hb_font_destroy (font);
|
||||
}
|
||||
|
||||
static void
|
||||
test_advance_tt_var_nohvar (void)
|
||||
{
|
||||
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
|
||||
g_assert (face);
|
||||
hb_font_t *font = hb_font_create (face);
|
||||
hb_face_destroy (face);
|
||||
g_assert (font);
|
||||
hb_ot_font_set_funcs (font);
|
||||
|
||||
hb_position_t x, y;
|
||||
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 520);
|
||||
g_assert_cmpint (y, ==, 0);
|
||||
|
||||
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 0);
|
||||
g_assert_cmpint (y, ==, -1000);
|
||||
|
||||
float coords[1] = { 500.0f };
|
||||
hb_font_set_var_coords_design (font, coords, 1);
|
||||
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 551);
|
||||
g_assert_cmpint (y, ==, 0);
|
||||
|
||||
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 0);
|
||||
g_assert_cmpint (y, ==, -1000);
|
||||
|
||||
hb_font_destroy (font);
|
||||
}
|
||||
|
||||
static void
|
||||
test_advance_tt_var_hvarvvar (void)
|
||||
{
|
||||
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSerifVariable-Roman-VVAR.abc.ttf");
|
||||
g_assert (face);
|
||||
hb_font_t *font = hb_font_create (face);
|
||||
hb_face_destroy (face);
|
||||
g_assert (font);
|
||||
hb_ot_font_set_funcs (font);
|
||||
|
||||
hb_position_t x, y;
|
||||
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 508);
|
||||
g_assert_cmpint (y, ==, 0);
|
||||
|
||||
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 0);
|
||||
g_assert_cmpint (y, ==, -1000);
|
||||
|
||||
float coords[1] = { 700.0f };
|
||||
hb_font_set_var_coords_design (font, coords, 1);
|
||||
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 531);
|
||||
g_assert_cmpint (y, ==, 0);
|
||||
|
||||
hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 0);
|
||||
g_assert_cmpint (y, ==, -1012);
|
||||
|
||||
hb_font_destroy (font);
|
||||
}
|
||||
|
||||
static void
|
||||
test_advance_tt_var_anchor (void)
|
||||
{
|
||||
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.anchor.ttf");
|
||||
g_assert (face);
|
||||
hb_font_t *font = hb_font_create (face);
|
||||
hb_face_destroy (face);
|
||||
g_assert (font);
|
||||
hb_ot_font_set_funcs (font);
|
||||
|
||||
hb_glyph_extents_t extents;
|
||||
hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
|
||||
g_assert (result);
|
||||
|
||||
g_assert_cmpint (extents.x_bearing, ==, 56);
|
||||
g_assert_cmpint (extents.y_bearing, ==, 672);
|
||||
g_assert_cmpint (extents.width, ==, 556);
|
||||
g_assert_cmpint (extents.height, ==, -684);
|
||||
|
||||
float coords[1] = { 500.0f };
|
||||
hb_font_set_var_coords_design (font, coords, 1);
|
||||
result = hb_font_get_glyph_extents (font, 2, &extents);
|
||||
g_assert (result);
|
||||
|
||||
g_assert_cmpint (extents.x_bearing, ==, 50);
|
||||
g_assert_cmpint (extents.y_bearing, ==, 667);
|
||||
g_assert_cmpint (extents.width, ==, 593);
|
||||
g_assert_cmpint (extents.height, ==, -679);
|
||||
|
||||
hb_font_destroy (font);
|
||||
}
|
||||
|
||||
static void
|
||||
test_extents_tt_var_comp (void)
|
||||
{
|
||||
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
|
||||
g_assert (face);
|
||||
hb_font_t *font = hb_font_create (face);
|
||||
hb_face_destroy (face);
|
||||
g_assert (font);
|
||||
hb_ot_font_set_funcs (font);
|
||||
|
||||
hb_glyph_extents_t extents;
|
||||
float coords[1] = { 800.0f };
|
||||
hb_font_set_var_coords_design (font, coords, 1);
|
||||
|
||||
hb_bool_t result;
|
||||
result = hb_font_get_glyph_extents (font, 2, &extents); /* Ccedilla, cedilla y-scaled by 0.8, with unscaled component offset */
|
||||
g_assert (result);
|
||||
|
||||
g_assert_cmpint (extents.x_bearing, ==, 19);
|
||||
g_assert_cmpint (extents.y_bearing, ==, 663);
|
||||
g_assert_cmpint (extents.width, ==, 519);
|
||||
g_assert_cmpint (extents.height, ==, -895);
|
||||
|
||||
result = hb_font_get_glyph_extents (font, 3, &extents); /* Cacute, acute y-scaled by 0.8, with unscaled component offset (default) */
|
||||
g_assert (result);
|
||||
|
||||
g_assert_cmpint (extents.x_bearing, ==, 19);
|
||||
g_assert_cmpint (extents.y_bearing, ==, 909);
|
||||
g_assert_cmpint (extents.width, ==, 519);
|
||||
g_assert_cmpint (extents.height, ==, -921);
|
||||
|
||||
result = hb_font_get_glyph_extents (font, 4, &extents); /* Ccaron, caron y-scaled by 0.8, with scaled component offset */
|
||||
g_assert (result);
|
||||
|
||||
g_assert_cmpint (extents.x_bearing, ==, 19);
|
||||
g_assert_cmpint (extents.y_bearing, ==, 866);
|
||||
g_assert_cmpint (extents.width, ==, 519);
|
||||
g_assert_cmpint (extents.height, ==, -878);
|
||||
|
||||
hb_font_destroy (font);
|
||||
}
|
||||
|
||||
static void
|
||||
test_advance_tt_var_comp_v (void)
|
||||
{
|
||||
hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
|
||||
g_assert (face);
|
||||
hb_font_t *font = hb_font_create (face);
|
||||
hb_face_destroy (face);
|
||||
g_assert (font);
|
||||
hb_ot_font_set_funcs (font);
|
||||
|
||||
float coords[1] = { 800.0f };
|
||||
hb_font_set_var_coords_design (font, coords, 1);
|
||||
|
||||
hb_position_t x, y;
|
||||
hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y); /* No VVAR; 'C' in composite Ccedilla determines metrics */
|
||||
|
||||
g_assert_cmpint (x, ==, 0);
|
||||
g_assert_cmpint (y, ==, -991);
|
||||
|
||||
hb_font_get_glyph_origin_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);
|
||||
|
||||
g_assert_cmpint (x, ==, 292);
|
||||
g_assert_cmpint (y, ==, 1013);
|
||||
|
||||
hb_font_destroy (font);
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char **argv)
|
||||
{
|
||||
hb_test_init (&argc, &argv);
|
||||
|
||||
hb_test_add (test_extents_tt_var);
|
||||
hb_test_add (test_advance_tt_var_nohvar);
|
||||
hb_test_add (test_advance_tt_var_hvarvvar);
|
||||
hb_test_add (test_advance_tt_var_anchor);
|
||||
hb_test_add (test_extents_tt_var_comp);
|
||||
hb_test_add (test_advance_tt_var_comp_v);
|
||||
|
||||
return hb_test_run ();
|
||||
}
|
||||
Loading…
Reference in New Issue