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src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-color-cbdt-table.hh
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@@ -25,11 +25,11 @@
*/
#ifndef HB_OT_COLOR_CBDT_TABLE_HH
#define HB_OT_COLOR_CBDT_TABLE_HH
-#include "hb-open-type-private.hh"
+#include "hb-open-type.hh"
/*
* CBLC -- Color Bitmap Location
* https://docs.microsoft.com/en-us/typography/opentype/spec/cblc
* https://docs.microsoft.com/en-us/typography/opentype/spec/eblc
@@ -43,22 +43,22 @@
namespace OT {
struct SmallGlyphMetrics
{
- 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));
}
- inline void get_extents (hb_glyph_extents_t *extents) const
+ void get_extents (hb_glyph_extents_t *extents) const
{
extents->x_bearing = bearingX;
extents->y_bearing = bearingY;
extents->width = width;
- extents->height = -height;
+ extents->height = - (hb_position_t) height;
}
HBUINT8 height;
HBUINT8 width;
HBINT8 bearingX;
@@ -77,11 +77,11 @@
DEFINE_SIZE_STATIC(8);
};
struct SBitLineMetrics
{
- 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));
}
@@ -106,11 +106,11 @@
* Index Subtables.
*/
struct IndexSubtableHeader
{
- 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));
}
@@ -122,15 +122,15 @@
};
template <typename OffsetType>
struct IndexSubtableFormat1Or3
{
- inline bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const
+ bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
- c->check_array (offsetArrayZ, offsetArrayZ[0].static_size, glyph_count + 1));
+ offsetArrayZ.sanitize (c, glyph_count + 1));
}
bool get_image_data (unsigned int idx,
unsigned int *offset,
unsigned int *length) const
@@ -142,32 +142,33 @@
*length = offsetArrayZ[idx + 1] - offsetArrayZ[idx];
return true;
}
IndexSubtableHeader header;
- Offset<OffsetType> offsetArrayZ[VAR];
+ UnsizedArrayOf<Offset<OffsetType> >
+ offsetArrayZ;
public:
DEFINE_SIZE_ARRAY(8, offsetArrayZ);
};
struct IndexSubtableFormat1 : IndexSubtableFormat1Or3<HBUINT32> {};
struct IndexSubtableFormat3 : IndexSubtableFormat1Or3<HBUINT16> {};
struct IndexSubtable
{
- inline bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const
+ bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const
{
TRACE_SANITIZE (this);
if (!u.header.sanitize (c)) return_trace (false);
switch (u.header.indexFormat) {
case 1: return_trace (u.format1.sanitize (c, glyph_count));
case 3: return_trace (u.format3.sanitize (c, glyph_count));
default:return_trace (true);
}
}
- inline bool get_extents (hb_glyph_extents_t *extents) const
+ bool get_extents (hb_glyph_extents_t *extents HB_UNUSED) const
{
switch (u.header.indexFormat) {
case 2: case 5: /* TODO */
case 1: case 3: case 4: /* Variable-metrics formats do not have metrics here. */
default:return (false);
@@ -198,33 +199,32 @@
DEFINE_SIZE_UNION (8, header);
};
struct IndexSubtableRecord
{
- inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
firstGlyphIndex <= lastGlyphIndex &&
- offsetToSubtable.sanitize (c, this, lastGlyphIndex - firstGlyphIndex + 1));
+ offsetToSubtable.sanitize (c, base, lastGlyphIndex - firstGlyphIndex + 1));
}
- inline bool get_extents (hb_glyph_extents_t *extents) const
+ bool get_extents (hb_glyph_extents_t *extents,
+ const void *base) const
{
- return (this+offsetToSubtable).get_extents (extents);
+ return (base+offsetToSubtable).get_extents (extents);
}
bool get_image_data (unsigned int gid,
+ const void *base,
unsigned int *offset,
unsigned int *length,
unsigned int *format) const
{
- if (gid < firstGlyphIndex || gid > lastGlyphIndex)
- {
- return false;
- }
- return (this+offsetToSubtable).get_image_data (gid - firstGlyphIndex,
+ if (gid < firstGlyphIndex || gid > lastGlyphIndex) return false;
+ return (base+offsetToSubtable).get_image_data (gid - firstGlyphIndex,
offset, length, format);
}
GlyphID firstGlyphIndex;
GlyphID lastGlyphIndex;
@@ -235,63 +235,57 @@
struct IndexSubtableArray
{
friend struct CBDT;
- inline bool sanitize (hb_sanitize_context_t *c, unsigned int count) const
+ bool sanitize (hb_sanitize_context_t *c, unsigned int count) const
{
TRACE_SANITIZE (this);
- if (unlikely (!c->check_array (&indexSubtablesZ, indexSubtablesZ[0].static_size, count)))
- return_trace (false);
- for (unsigned int i = 0; i < count; i++)
- if (unlikely (!indexSubtablesZ[i].sanitize (c, this)))
- return_trace (false);
- return_trace (true);
+ return_trace (indexSubtablesZ.sanitize (c, count, this));
}
public:
const IndexSubtableRecord* find_table (hb_codepoint_t glyph, unsigned int numTables) const
{
for (unsigned int i = 0; i < numTables; ++i)
{
unsigned int firstGlyphIndex = indexSubtablesZ[i].firstGlyphIndex;
unsigned int lastGlyphIndex = indexSubtablesZ[i].lastGlyphIndex;
- if (firstGlyphIndex <= glyph && glyph <= lastGlyphIndex) {
+ if (firstGlyphIndex <= glyph && glyph <= lastGlyphIndex)
return &indexSubtablesZ[i];
}
- }
return nullptr;
}
protected:
- IndexSubtableRecord indexSubtablesZ[VAR];
- public:
- DEFINE_SIZE_ARRAY(0, indexSubtablesZ);
+ UnsizedArrayOf<IndexSubtableRecord> indexSubtablesZ;
};
struct BitmapSizeTable
{
friend struct CBLC;
friend struct CBDT;
- inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
indexSubtableArrayOffset.sanitize (c, base, numberOfIndexSubtables) &&
- c->check_range (&(base+indexSubtableArrayOffset), indexTablesSize) &&
horizontal.sanitize (c) &&
vertical.sanitize (c));
}
- const IndexSubtableRecord *find_table (hb_codepoint_t glyph, const void *base) const
+ const IndexSubtableRecord *find_table (hb_codepoint_t glyph,
+ const void *base,
+ const void **out_base) const
{
+ *out_base = &(base+indexSubtableArrayOffset);
return (base+indexSubtableArrayOffset).find_table (glyph, numberOfIndexSubtables);
}
protected:
- LOffsetTo<IndexSubtableArray>
+ LNNOffsetTo<IndexSubtableArray>
indexSubtableArrayOffset;
HBUINT32 indexTablesSize;
HBUINT32 numberOfIndexSubtables;
HBUINT32 colorRef;
SBitLineMetrics horizontal;
@@ -336,40 +330,45 @@
struct CBLC
{
friend struct CBDT;
- static const hb_tag_t tableTag = HB_OT_TAG_CBLC;
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_CBLC;
- 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) &&
likely (version.major == 2 || version.major == 3) &&
sizeTables.sanitize (c, this));
}
protected:
- const IndexSubtableRecord *find_table (hb_codepoint_t glyph,
- unsigned int *x_ppem, unsigned int *y_ppem) const
+ const BitmapSizeTable &choose_strike (hb_font_t *font) const
{
- /* TODO: Make it possible to select strike. */
+ unsigned count = sizeTables.len;
+ if (unlikely (!count))
+ return Null(BitmapSizeTable);
- unsigned int count = sizeTables.len;
- for (uint32_t i = 0; i < count; ++i)
+ unsigned int requested_ppem = MAX (font->x_ppem, font->y_ppem);
+ if (!requested_ppem)
+ requested_ppem = 1<<30; /* Choose largest strike. */
+ unsigned int best_i = 0;
+ unsigned int best_ppem = MAX (sizeTables[0].ppemX, sizeTables[0].ppemY);
+
+ for (unsigned int i = 1; i < count; i++)
{
- unsigned int startGlyphIndex = sizeTables.arrayZ[i].startGlyphIndex;
- unsigned int endGlyphIndex = sizeTables.arrayZ[i].endGlyphIndex;
- if (startGlyphIndex <= glyph && glyph <= endGlyphIndex)
+ unsigned int ppem = MAX (sizeTables[i].ppemX, sizeTables[i].ppemY);
+ if ((requested_ppem <= ppem && ppem < best_ppem) ||
+ (requested_ppem > best_ppem && ppem > best_ppem))
{
- *x_ppem = sizeTables[i].ppemX;
- *y_ppem = sizeTables[i].ppemY;
- return sizeTables[i].find_table (glyph, this);
+ best_i = i;
+ best_ppem = ppem;
}
}
- return nullptr;
+ return sizeTables[best_i];
}
protected:
FixedVersion<> version;
LArrayOf<BitmapSizeTable> sizeTables;
@@ -377,162 +376,160 @@
DEFINE_SIZE_ARRAY(8, sizeTables);
};
struct CBDT
{
- static const hb_tag_t tableTag = HB_OT_TAG_CBDT;
-
- inline bool sanitize (hb_sanitize_context_t *c) const
- {
- TRACE_SANITIZE (this);
- return_trace (c->check_struct (this) &&
- likely (version.major == 2 || version.major == 3));
- }
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_CBDT;
struct accelerator_t
{
- inline void init (hb_face_t *face)
+ void init (hb_face_t *face)
{
- upem = hb_face_get_upem (face);
-
- cblc_blob = Sanitizer<CBLC>().sanitize (face->reference_table (HB_OT_TAG_CBLC));
- cbdt_blob = Sanitizer<CBDT>().sanitize (face->reference_table (HB_OT_TAG_CBDT));
- cbdt_len = hb_blob_get_length (cbdt_blob);
-
- if (hb_blob_get_length (cblc_blob) == 0) {
- cblc = nullptr;
- cbdt = nullptr;
- return; /* Not a bitmap font. */
- }
- cblc = cblc_blob->as<CBLC> ();
- cbdt = cbdt_blob->as<CBDT> ();
+ cblc = hb_sanitize_context_t().reference_table<CBLC> (face);
+ cbdt = hb_sanitize_context_t().reference_table<CBDT> (face);
+ upem = hb_face_get_upem (face);
}
- inline void fini (void)
+ void fini ()
{
- hb_blob_destroy (this->cblc_blob);
- hb_blob_destroy (this->cbdt_blob);
+ this->cblc.destroy ();
+ this->cbdt.destroy ();
}
- inline bool get_extents (hb_codepoint_t glyph, hb_glyph_extents_t *extents) const
+ bool get_extents (hb_font_t *font, hb_codepoint_t glyph,
+ hb_glyph_extents_t *extents) const
{
- unsigned int x_ppem = upem, y_ppem = upem; /* TODO Use font ppem if available. */
-
- if (!cblc)
- return false; // Not a color bitmap font.
-
- const IndexSubtableRecord *subtable_record = this->cblc->find_table(glyph, &x_ppem, &y_ppem);
- if (!subtable_record || !x_ppem || !y_ppem)
+ const void *base;
+ const BitmapSizeTable &strike = this->cblc->choose_strike (font);
+ const IndexSubtableRecord *subtable_record = strike.find_table (glyph, cblc, &base);
+ if (!subtable_record || !strike.ppemX || !strike.ppemY)
return false;
- if (subtable_record->get_extents (extents))
+ if (subtable_record->get_extents (extents, base))
return true;
unsigned int image_offset = 0, image_length = 0, image_format = 0;
- if (!subtable_record->get_image_data (glyph, &image_offset, &image_length, &image_format))
+ if (!subtable_record->get_image_data (glyph, base, &image_offset, &image_length, &image_format))
return false;
{
+ unsigned int cbdt_len = cbdt.get_length ();
if (unlikely (image_offset > cbdt_len || cbdt_len - image_offset < image_length))
return false;
switch (image_format)
{
case 17: {
if (unlikely (image_length < GlyphBitmapDataFormat17::min_size))
return false;
-
const GlyphBitmapDataFormat17& glyphFormat17 =
StructAtOffset<GlyphBitmapDataFormat17> (this->cbdt, image_offset);
glyphFormat17.glyphMetrics.get_extents (extents);
+ break;
}
+ case 18: {
+ if (unlikely (image_length < GlyphBitmapDataFormat18::min_size))
+ return false;
+ const GlyphBitmapDataFormat18& glyphFormat18 =
+ StructAtOffset<GlyphBitmapDataFormat18> (this->cbdt, image_offset);
+ glyphFormat18.glyphMetrics.get_extents (extents);
break;
+ }
default:
// TODO: Support other image formats.
return false;
}
}
- /* Convert to the font units. */
- extents->x_bearing *= upem / (float) x_ppem;
- extents->y_bearing *= upem / (float) y_ppem;
- extents->width *= upem / (float) x_ppem;
- extents->height *= upem / (float) y_ppem;
+ /* Convert to font units. */
+ double x_scale = upem / (double) strike.ppemX;
+ double y_scale = upem / (double) strike.ppemY;
+ extents->x_bearing = round (extents->x_bearing * x_scale);
+ extents->y_bearing = round (extents->y_bearing * y_scale);
+ extents->width = round (extents->width * x_scale);
+ extents->height = round (extents->height * y_scale);
return true;
}
- inline void dump (void (*callback) (const uint8_t* data, unsigned int length,
- unsigned int group, unsigned int gid)) const
+ hb_blob_t* reference_png (hb_font_t *font,
+ hb_codepoint_t glyph) const
{
- if (!cblc)
- return; // Not a color bitmap font.
+ const void *base;
+ const BitmapSizeTable &strike = this->cblc->choose_strike (font);
+ const IndexSubtableRecord *subtable_record = strike.find_table (glyph, cblc, &base);
+ if (!subtable_record || !strike.ppemX || !strike.ppemY)
+ return hb_blob_get_empty ();
- for (unsigned int i = 0; i < cblc->sizeTables.len; ++i)
- {
- const BitmapSizeTable &sizeTable = cblc->sizeTables[i];
- const IndexSubtableArray &subtable_array = cblc+sizeTable.indexSubtableArrayOffset;
- for (unsigned int j = 0; j < sizeTable.numberOfIndexSubtables; ++j)
- {
- const IndexSubtableRecord &subtable_record = subtable_array.indexSubtablesZ[j];
- for (unsigned int gid = subtable_record.firstGlyphIndex;
- gid <= subtable_record.lastGlyphIndex; ++gid)
- {
unsigned int image_offset = 0, image_length = 0, image_format = 0;
+ if (!subtable_record->get_image_data (glyph, base, &image_offset, &image_length, &image_format))
+ return hb_blob_get_empty ();
- if (!subtable_record.get_image_data (gid,
- &image_offset, &image_length, &image_format))
- continue;
+ {
+ unsigned int cbdt_len = cbdt.get_length ();
+ if (unlikely (image_offset > cbdt_len || cbdt_len - image_offset < image_length))
+ return hb_blob_get_empty ();
switch (image_format)
{
case 17: {
+ if (unlikely (image_length < GlyphBitmapDataFormat17::min_size))
+ return hb_blob_get_empty ();
const GlyphBitmapDataFormat17& glyphFormat17 =
StructAtOffset<GlyphBitmapDataFormat17> (this->cbdt, image_offset);
- callback ((const uint8_t *) &glyphFormat17.data.arrayZ,
- glyphFormat17.data.len, i, gid);
+ return hb_blob_create_sub_blob (cbdt.get_blob (),
+ image_offset + GlyphBitmapDataFormat17::min_size,
+ glyphFormat17.data.len);
}
- break;
case 18: {
+ if (unlikely (image_length < GlyphBitmapDataFormat18::min_size))
+ return hb_blob_get_empty ();
const GlyphBitmapDataFormat18& glyphFormat18 =
StructAtOffset<GlyphBitmapDataFormat18> (this->cbdt, image_offset);
- callback ((const uint8_t *) &glyphFormat18.data.arrayZ,
- glyphFormat18.data.len, i, gid);
+ return hb_blob_create_sub_blob (cbdt.get_blob (),
+ image_offset + GlyphBitmapDataFormat18::min_size,
+ glyphFormat18.data.len);
}
- break;
case 19: {
+ if (unlikely (image_length < GlyphBitmapDataFormat19::min_size))
+ return hb_blob_get_empty ();
const GlyphBitmapDataFormat19& glyphFormat19 =
StructAtOffset<GlyphBitmapDataFormat19> (this->cbdt, image_offset);
- callback ((const uint8_t *) &glyphFormat19.data.arrayZ,
- glyphFormat19.data.len, i, gid);
- }
- break;
- default:
- continue;
- }
+ return hb_blob_create_sub_blob (cbdt.get_blob (),
+ image_offset + GlyphBitmapDataFormat19::min_size,
+ glyphFormat19.data.len);
}
}
}
+
+ return hb_blob_get_empty ();
}
+ bool has_data () const { return cbdt.get_length (); }
+
private:
- hb_blob_t *cblc_blob;
- hb_blob_t *cbdt_blob;
- const CBLC *cblc;
- const CBDT *cbdt;
+ hb_blob_ptr_t<CBLC> cblc;
+ hb_blob_ptr_t<CBDT> cbdt;
- unsigned int cbdt_len;
unsigned int upem;
};
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (c->check_struct (this) &&
+ likely (version.major == 2 || version.major == 3));
+ }
protected:
FixedVersion<> version;
- HBUINT8 dataZ[VAR];
+ UnsizedArrayOf<HBUINT8> dataZ;
public:
DEFINE_SIZE_ARRAY(4, dataZ);
};
+struct CBDT_accelerator_t : CBDT::accelerator_t {};
+
} /* namespace OT */
#endif /* HB_OT_COLOR_CBDT_TABLE_HH */
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