fix composite glyf extents
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cd817e7955
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@ -487,14 +487,15 @@ struct glyf
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/* Note: Recursively calls itself. Who's checking recursively nested composite glyph BTW? */
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/* Note: Recursively calls itself. Who's checking recursively nested composite glyph BTW? */
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bool get_var_metrics (hb_codepoint_t glyph,
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bool get_var_metrics (hb_codepoint_t glyph,
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const int *coords, unsigned int coord_count,
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const int *coords, unsigned int coord_count,
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hb_vector_t<contour_point_t> &phantoms /* OUT */) const
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hb_array_t<contour_point_t> phantoms /* OUT */) const
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{
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{
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hb_vector_t<contour_point_t> points;
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hb_vector_t<contour_point_t> points;
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hb_vector_t<unsigned int> end_points;
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hb_vector_t<unsigned int> end_points;
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if (unlikely (!get_contour_points (glyph, points, end_points, true/*phantom_only*/))) return false;
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if (unlikely (!get_contour_points (glyph, points, end_points, true/*phantom_only*/))) return false;
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hb_array_t<contour_point_t> phantoms_array = points.sub_array (points.length-PHANTOM_COUNT, PHANTOM_COUNT);
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hb_array_t<contour_point_t> phantoms_array = points.sub_array (points.length-PHANTOM_COUNT, PHANTOM_COUNT);
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init_phantom_points (glyph, phantoms_array);
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init_phantom_points (glyph, phantoms_array);
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if (unlikely (!gvar_accel.apply_deltas_to_points (glyph, coords, coord_count, points.as_array (), end_points.as_array ()))) return false;
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if (unlikely (!gvar_accel.apply_deltas_to_points (glyph, coords, coord_count,
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points.as_array (), end_points.as_array ()))) return false;
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for (unsigned int i = 0; i < PHANTOM_COUNT; i++)
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for (unsigned int i = 0; i < PHANTOM_COUNT; i++)
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phantoms[i] = points[points.length - PHANTOM_COUNT + i];
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phantoms[i] = points[points.length - PHANTOM_COUNT + i];
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@ -505,7 +506,8 @@ struct glyf
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{
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{
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if (composite.current->flags & CompositeGlyphHeader::USE_MY_METRICS)
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if (composite.current->flags & CompositeGlyphHeader::USE_MY_METRICS)
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{
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{
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if (unlikely (!get_var_metrics (composite.current->glyphIndex, coords, coord_count, phantoms))) return false;
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if (unlikely (!get_var_metrics (composite.current->glyphIndex, coords, coord_count,
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phantoms.sub_array (0, 2)))) return false;
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for (unsigned int j = 0; j < phantoms.length; j++)
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for (unsigned int j = 0; j < phantoms.length; j++)
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composite.current->transform_point (phantoms[j].x, phantoms[j].y);
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composite.current->transform_point (phantoms[j].x, phantoms[j].y);
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}
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}
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@ -525,6 +527,8 @@ struct glyf
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max.y = MAX (max.y, p.y);
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max.y = MAX (max.y, p.y);
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}
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}
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void offset (const contour_point_t &p) { min.offset (p); max.offset (p); }
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void merge (const contour_bounds_t &b)
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void merge (const contour_bounds_t &b)
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{
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{
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if (empty ()) { *this = b; return; }
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if (empty ()) { *this = b; return; }
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@ -550,24 +554,33 @@ struct glyf
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init_phantom_points (glyph, phantoms_array);
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init_phantom_points (glyph, phantoms_array);
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if (unlikely (!gvar_accel.apply_deltas_to_points (glyph, coords, coord_count, points.as_array (), end_points.as_array ()))) return false;
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if (unlikely (!gvar_accel.apply_deltas_to_points (glyph, coords, coord_count, points.as_array (), end_points.as_array ()))) return false;
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unsigned int comp_index = 0;
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CompositeGlyphHeader::Iterator composite;
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CompositeGlyphHeader::Iterator composite;
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if (!get_composite (glyph, &composite))
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if (!get_composite (glyph, &composite))
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{
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{
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/* simple glyph */
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/* simple glyph */
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for (unsigned int i = 0; i + PHANTOM_COUNT < points.length; i++)
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for (unsigned int i = 0; i + PHANTOM_COUNT < points.length; i++)
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bounds.add (points[i]); /* TODO: need to check ON_CURVE or flatten? */
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bounds.add (points[i]); /* TODO: need to check ON_CURVE or flatten? */
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return true;
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}
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}
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/* composite glyph */
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else
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do
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{
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{
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contour_bounds_t comp_bounds;
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/* composite glyph */
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if (unlikely (!get_bounds_var (composite.current->glyphIndex, coords, coord_count, comp_bounds))) return false;
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do
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{
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contour_bounds_t comp_bounds;
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if (unlikely (!get_bounds_var (composite.current->glyphIndex, coords, coord_count, comp_bounds))) return false;
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composite.current->transform_point (comp_bounds.min.x, comp_bounds.min.y);
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/* Apply offset & scaling */
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composite.current->transform_point (comp_bounds.max.x, comp_bounds.max.y);
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composite.current->transform_point (comp_bounds.min.x, comp_bounds.min.y);
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bounds.merge (comp_bounds);
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composite.current->transform_point (comp_bounds.max.x, comp_bounds.max.y);
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} while (composite.move_to_next());
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/* Apply offset adjustments from gvar */
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comp_bounds.offset (points[comp_index]);
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bounds.merge (comp_bounds);
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comp_index++;
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} while (composite.move_to_next());
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}
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/* Shift bounds by the updated left side bearing (vertically too?) */
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/* Shift bounds by the updated left side bearing (vertically too?) */
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{
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{
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@ -779,7 +792,7 @@ struct glyf
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hb_vector_t<contour_point_t> phantoms;
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hb_vector_t<contour_point_t> phantoms;
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phantoms.resize (PHANTOM_COUNT);
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phantoms.resize (PHANTOM_COUNT);
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if (unlikely (!get_var_metrics (glyph, coords, coord_count, phantoms))) return advance;
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if (unlikely (!get_var_metrics (glyph, coords, coord_count, phantoms.as_array ()))) return advance;
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if (vertical)
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if (vertical)
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return -(phantoms[PHANTOM_BOTTOM].y - phantoms[PHANTOM_TOP].y); // is this sign correct?
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return -(phantoms[PHANTOM_BOTTOM].y - phantoms[PHANTOM_TOP].y); // is this sign correct?
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@ -44,6 +44,9 @@ namespace OT {
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struct contour_point_t
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struct contour_point_t
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{
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{
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void init () { flag = 0; x = y = 0.0f; }
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void init () { flag = 0; x = y = 0.0f; }
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void offset (const contour_point_t &p) { x += p.x; y += p.y; }
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uint8_t flag;
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uint8_t flag;
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float x, y;
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float x, y;
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};
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};
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