53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
#ifndef OT_GLYF_GLYPHHEADER_HH
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#define OT_GLYF_GLYPHHEADER_HH
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#include "../../hb-open-type.hh"
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namespace OT {
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namespace glyf_impl {
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struct GlyphHeader
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{
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bool has_data () const { return numberOfContours; }
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template <typename accelerator_t>
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bool get_extents_without_var_scaled (hb_font_t *font, const accelerator_t &glyf_accelerator,
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hb_codepoint_t gid, hb_glyph_extents_t *extents) const
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{
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/* Undocumented rasterizer behavior: shift glyph to the left by (lsb - xMin), i.e., xMin = lsb */
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/* extents->x_bearing = hb_min (glyph_header.xMin, glyph_header.xMax); */
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int lsb = hb_min (xMin, xMax);
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(void) glyf_accelerator.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb);
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extents->x_bearing = lsb;
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extents->y_bearing = hb_max (yMin, yMax);
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extents->width = hb_max (xMin, xMax) - hb_min (xMin, xMax);
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extents->height = hb_min (yMin, yMax) - hb_max (yMin, yMax);
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font->scale_glyph_extents (extents);
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return true;
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}
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HBINT16 numberOfContours;
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/* 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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FWORD xMin; /* Minimum x for coordinate data. */
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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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} /* namespace glyf_impl */
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} /* namespace OT */
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#endif /* OT_GLYF_GLYPHHEADER_HH */
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