1#ifndef OT_GLYF_GLYPHHEADER_HH
2#define OT_GLYF_GLYPHHEADER_HH
3
4
5#include "../../hb-open-type.hh"
6
7
8namespace OT {
9namespace glyf_impl {
10
11
12struct GlyphHeader
13{
14 bool has_data () const { return numberOfContours; }
15
16 template <typename accelerator_t>
17 bool get_extents_without_var_scaled (hb_font_t *font, const accelerator_t &glyf_accelerator,
18 hb_codepoint_t gid, hb_glyph_extents_t *extents) const
19 {
20 /* Undocumented rasterizer behavior: shift glyph to the left by (lsb - xMin), i.e., xMin = lsb */
21 /* extents->x_bearing = hb_min (glyph_header.xMin, glyph_header.xMax); */
22 int lsb = hb_min (xMin, xMax);
23 (void) glyf_accelerator.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb);
24 extents->x_bearing = lsb;
25 extents->y_bearing = hb_max (yMin, yMax);
26 extents->width = hb_max (xMin, xMax) - hb_min (xMin, xMax);
27 extents->height = hb_min (yMin, yMax) - hb_max (yMin, yMax);
28
29 font->scale_glyph_extents (extents);
30
31 return true;
32 }
33
34 HBINT16 numberOfContours;
35 /* If the number of contours is
36 * greater than or equal to zero,
37 * this is a simple glyph; if negative,
38 * this is a composite glyph. */
39 FWORD xMin; /* Minimum x for coordinate data. */
40 FWORD yMin; /* Minimum y for coordinate data. */
41 FWORD xMax; /* Maximum x for coordinate data. */
42 FWORD yMax; /* Maximum y for coordinate data. */
43 public:
44 DEFINE_SIZE_STATIC (10);
45};
46
47
48} /* namespace glyf_impl */
49} /* namespace OT */
50
51
52#endif /* OT_GLYF_GLYPHHEADER_HH */
53