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