#ifndef HB_OT_COLOR_COLR_TABLE_HH
#define HB_OT_COLOR_COLR_TABLE_HH
-#include "hb-open-type-private.hh"
+#include "hb-open-type.hh"
/*
* COLR -- Color
struct LayerRecord
{
- friend struct COLR;
-
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
}
- protected:
- GlyphID glyphid; /* Glyph ID of layer glyph */
- HBUINT16 colorIdx; /* Index value to use with a selected color palette */
+ public:
+ GlyphID glyphId; /* Glyph ID of layer glyph */
+ Index colorIdx; /* Index value to use with a
+ * selected color palette.
+ * An index value of 0xFFFF
+ * is a special case indicating
+ * that the text foreground
+ * color (defined by a
+ * higher-level client) should
+ * be used and shall not be
+ * treated as actual index
+ * into CPAL ColorRecord array. */
public:
DEFINE_SIZE_STATIC (4);
};
struct BaseGlyphRecord
{
- friend struct COLR;
+ int cmp (hb_codepoint_t g) const
+ { return g < glyphId ? -1 : g > glyphId ? 1 : 0; }
- inline bool sanitize (hb_sanitize_context_t *c) const
+ bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (likely (c->check_struct (this)));
}
- inline int cmp (hb_codepoint_t g) const {
- return g < glyphid ? -1 : g > glyphid ? 1 : 0;
- }
-
- protected:
- GlyphID glyphid; /* Glyph ID of reference glyph */
- HBUINT16 firstLayerIdx; /* Index to the layer record */
- HBUINT16 numLayers; /* Number of color layers associated with this glyph */
+ public:
+ GlyphID glyphId; /* Glyph ID of reference glyph */
+ HBUINT16 firstLayerIdx; /* Index (from beginning of
+ * the Layer Records) to the
+ * layer record. There will be
+ * numLayers consecutive entries
+ * for this base glyph. */
+ HBUINT16 numLayers; /* Number of color layers
+ * associated with this glyph */
public:
DEFINE_SIZE_STATIC (6);
};
-static int compare_bgr (const void *pa, const void *pb)
-{
- const hb_codepoint_t *a = (const hb_codepoint_t *) pa;
- const BaseGlyphRecord *b = (const BaseGlyphRecord *) pb;
- return b->cmp (*a);
-}
-
struct COLR
{
- static const hb_tag_t tableTag = HB_OT_TAG_COLR;
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_COLR;
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (likely (c->check_struct (this) &&
- (this+baseGlyphsZ).sanitize (c, numBaseGlyphs) &&
- (this+layersZ).sanitize (c, numLayers)));
- }
+ bool has_data () const { return numBaseGlyphs; }
- inline bool get_base_glyph_record (hb_codepoint_t glyph_id,
- unsigned int *first_layer /* OUT */,
- unsigned int *num_layers /* OUT */) const
+ unsigned int get_glyph_layers (hb_codepoint_t glyph,
+ unsigned int start_offset,
+ unsigned int *count, /* IN/OUT. May be NULL. */
+ hb_ot_color_layer_t *layers /* OUT. May be NULL. */) const
{
- const BaseGlyphRecord* record;
- record = (BaseGlyphRecord *) bsearch (&glyph_id, &(this+baseGlyphsZ), numBaseGlyphs,
- sizeof (BaseGlyphRecord), compare_bgr);
- if (unlikely (!record))
- return false;
-
- *first_layer = record->firstLayerIdx;
- *num_layers = record->numLayers;
- return true;
- }
+ const BaseGlyphRecord &record = (this+baseGlyphsZ).bsearch (numBaseGlyphs, glyph);
- inline bool get_layer_record (unsigned int record,
- hb_codepoint_t *glyph_id /* OUT */,
- unsigned int *palette_index /* OUT */) const
- {
- if (unlikely (record >= numLayers))
+ hb_array_t<const LayerRecord> all_layers ((this+layersZ).arrayZ, numLayers);
+ hb_array_t<const LayerRecord> glyph_layers = all_layers.sub_array (record.firstLayerIdx,
+ record.numLayers);
+ if (count)
{
- *glyph_id = 0;
- *palette_index = 0xFFFF;
- return false;
+ hb_array_t<const LayerRecord> segment_layers = glyph_layers.sub_array (start_offset, *count);
+ *count = segment_layers.length;
+ for (unsigned int i = 0; i < segment_layers.length; i++)
+ {
+ layers[i].glyph = segment_layers.arrayZ[i].glyphId;
+ layers[i].color_index = segment_layers.arrayZ[i].colorIdx;
+ }
}
- const LayerRecord &layer = (this+layersZ)[record];
- *glyph_id = layer.glyphid;
- *palette_index = layer.colorIdx;
- return true;
+ return glyph_layers.length;
+ }
+
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) &&
+ (this+baseGlyphsZ).sanitize (c, numBaseGlyphs) &&
+ (this+layersZ).sanitize (c, numLayers)));
}
protected:
- HBUINT16 version; /* Table version number */
- HBUINT16 numBaseGlyphs; /* Number of Base Glyph Records */
- LOffsetTo<UnsizedArrayOf<BaseGlyphRecord> >
+ HBUINT16 version; /* Table version number (starts at 0). */
+ HBUINT16 numBaseGlyphs; /* Number of Base Glyph Records. */
+ LNNOffsetTo<SortedUnsizedArrayOf<BaseGlyphRecord> >
baseGlyphsZ; /* Offset to Base Glyph records. */
- LOffsetTo<UnsizedArrayOf<LayerRecord> >
- layersZ; /* Offset to Layer Records */
- HBUINT16 numLayers; /* Number of Layer Records */
+ LNNOffsetTo<UnsizedArrayOf<LayerRecord> >
+ layersZ; /* Offset to Layer Records. */
+ HBUINT16 numLayers; /* Number of Layer Records. */
public:
DEFINE_SIZE_STATIC (14);
};
projects / platform / upstream / harfbuzz.git / blobdiff