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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-opbd-table.hh124
1 files changed, 93 insertions, 31 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-opbd-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-opbd-table.hh
index 5b9c3912507..4e0234074fe 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-opbd-table.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-opbd-table.hh
@@ -45,50 +45,112 @@ struct OpticalBounds
return_trace (likely (c->check_struct (this)));
}
- HBINT16 leftSide;
- HBINT16 topSide;
- HBINT16 rightSide;
- HBINT16 bottomSide;
+ FWORD leftSide;
+ FWORD topSide;
+ FWORD rightSide;
+ FWORD bottomSide;
public:
DEFINE_SIZE_STATIC (8);
};
-struct opbd
+struct opbdFormat0
{
- static constexpr hb_tag_t tableTag = HB_AAT_TAG_opbd;
+ bool get_bounds (hb_font_t *font, hb_codepoint_t glyph_id,
+ hb_glyph_extents_t *extents, const void *base) const
+ {
+ const OffsetTo<OpticalBounds> *bounds_offset = lookupTable.get_value (glyph_id, font->face->get_num_glyphs ());
+ if (!bounds_offset) return false;
+ const OpticalBounds &bounds = base+*bounds_offset;
+
+ if (extents)
+ *extents = {
+ font->em_scale_x (bounds.leftSide),
+ font->em_scale_y (bounds.topSide),
+ font->em_scale_x (bounds.rightSide),
+ font->em_scale_y (bounds.bottomSide)
+ };
+ return true;
+ }
+
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) && lookupTable.sanitize (c, base)));
+ }
+
+ protected:
+ Lookup<OffsetTo<OpticalBounds>>
+ lookupTable; /* Lookup table associating glyphs with the four
+ * int16 values for the left-side, top-side,
+ * right-side, and bottom-side optical bounds. */
+ public:
+ DEFINE_SIZE_MIN (2);
+};
- bool get_optical_bounds (hb_font_t *font, hb_codepoint_t glyph_id,
- hb_position_t *left, hb_position_t *top,
- hb_position_t *right, hb_position_t *bottom) const
+struct opbdFormat1
+{
+ bool get_bounds (hb_font_t *font, hb_codepoint_t glyph_id,
+ hb_glyph_extents_t *extents, const void *base) const
{
const OffsetTo<OpticalBounds> *bounds_offset = lookupTable.get_value (glyph_id, font->face->get_num_glyphs ());
if (!bounds_offset) return false;
- const OpticalBounds &bounds = this+*bounds_offset;
- switch (format)
+ const OpticalBounds &bounds = base+*bounds_offset;
+
+ hb_position_t left = 0, top = 0, right = 0, bottom = 0, ignore;
+ if (font->get_glyph_contour_point (glyph_id, bounds.leftSide, &left, &ignore) ||
+ font->get_glyph_contour_point (glyph_id, bounds.topSide, &ignore, &top) ||
+ font->get_glyph_contour_point (glyph_id, bounds.rightSide, &right, &ignore) ||
+ font->get_glyph_contour_point (glyph_id, bounds.bottomSide, &ignore, &bottom))
{
- case 0:
- *left = font->em_scale_x (bounds.leftSide);
- *top = font->em_scale_y (bounds.topSide);
- *right = font->em_scale_x (bounds.rightSide);
- *bottom = font->em_scale_y (bounds.bottomSide);
+ if (extents)
+ *extents = {left, top, right, bottom};
return true;
- case 1:
- hb_position_t ignore;
- return font->get_glyph_contour_point (glyph_id, bounds.leftSide, left, &ignore) &&
- font->get_glyph_contour_point (glyph_id, bounds.topSide, &ignore, top) &&
- font->get_glyph_contour_point (glyph_id, bounds.rightSide, right, &ignore) &&
- font->get_glyph_contour_point (glyph_id, bounds.bottomSide, &ignore, bottom);
- default:
- return false;
+ }
+ return false;
+ }
+
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) && lookupTable.sanitize (c, base)));
+ }
+
+ protected:
+ Lookup<OffsetTo<OpticalBounds>>
+ lookupTable; /* Lookup table associating glyphs with the four
+ * int16 values for the left-side, top-side,
+ * right-side, and bottom-side optical bounds. */
+ public:
+ DEFINE_SIZE_MIN (2);
+};
+
+struct opbd
+{
+ static constexpr hb_tag_t tableTag = HB_AAT_TAG_opbd;
+
+ bool get_bounds (hb_font_t *font, hb_codepoint_t glyph_id,
+ hb_glyph_extents_t *extents) const
+ {
+ switch (format)
+ {
+ case 0: return u.format0.get_bounds (font, glyph_id, extents, this);
+ case 1: return u.format1.get_bounds (font, glyph_id, extents, this);
+ default:return false;
}
}
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (likely (c->check_struct (this) &&
- version.major == 1 &&
- lookupTable.sanitize (c, this)));
+ if (unlikely (!c->check_struct (this) || version.major != 1))
+ return_trace (false);
+
+ switch (format)
+ {
+ case 0: return_trace (u.format0.sanitize (c, this));
+ case 1: return_trace (u.format1.sanitize (c, this));
+ default:return_trace (true);
+ }
}
protected:
@@ -97,10 +159,10 @@ struct opbd
HBUINT16 format; /* Format of the optical bounds table.
* Format 0 indicates distance and Format 1 indicates
* control point. */
- Lookup<OffsetTo<OpticalBounds>>
- lookupTable; /* Lookup table associating glyphs with the four
- * int16 values for the left-side, top-side,
- * right-side, and bottom-side optical bounds. */
+ union {
+ opbdFormat0 format0;
+ opbdFormat1 format1;
+ } u;
public:
DEFINE_SIZE_MIN (8);
};