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[GX] Hookup VariationDevice to Device table implementation

This commit is contained in:
Behdad Esfahbod 2016-03-02 12:21:36 +09:00
parent a0c2366075
commit 4c535a822f
1 changed files with 64 additions and 1 deletions
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65
src/hb-ot-layout-common-private.hh
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@ -1165,8 +1165,11 @@ struct ClassDef
* Device Tables
*/
struct Device
struct HintingDevice
{
friend struct Device;
private:
inline hb_position_t get_x_delta (hb_font_t *font) const
{ return get_delta (font->x_ppem, font->x_scale); }
@ -1320,6 +1323,9 @@ struct VariationMap
struct VariationDevice
{
friend struct Device;
private:
inline hb_position_t get_x_delta (hb_font_t *font) const
{ return font->em_scalef_x (get_delta (font->x_coords, font->num_coords)); }
@ -1355,6 +1361,63 @@ struct VariationDevice
DEFINE_SIZE_ARRAY (6, deltaValue);
};
struct Device
{
inline hb_position_t get_x_delta (hb_font_t *font) const
{
switch (u.b.format)
{
case 1: case 2: case 3:
return u.hinting.get_x_delta (font);
case 0x10:
return u.variation.get_x_delta (font);
default:
return 0;
}
}
inline hb_position_t get_y_delta (hb_font_t *font) const
{
switch (u.b.format)
{
case 1: case 2: case 3:
return u.hinting.get_x_delta (font);
case 0x10:
return u.variation.get_x_delta (font);
default:
return 0;
}
}
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
if (!u.b.format.sanitize (c)) return_trace (false);
switch (u.b.format) {
case 1: case 2: case 3:
return_trace (u.hinting.sanitize (c));
case 0x10:
return_trace (u.variation.sanitize (c));
default:
return_trace (true);
}
}
protected:
union {
struct {
USHORT reserved1;
USHORT reserved2;
USHORT format; /* Format identifier */
public:
DEFINE_SIZE_STATIC (6);
} b;
HintingDevice hinting;
VariationDevice variation;
} u;
public:
DEFINE_SIZE_UNION (6, b);
};
} /* namespace OT */