diff options
author | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-10-30 23:50:16 +0000 |
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committer | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-10-30 23:50:16 +0000 |
commit | 584d60df238070d9840cc864591a44fe93721ae5 (patch) | |
tree | 453d093cfcf48471e47a6daf3259dd8260fd60d7 /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-cpal-table.hh | |
parent | 046ae60f6e5bda805763a12a2c95e3441e12e165 (diff) |
harfbuzz 2.1.0
git-svn-id: svn://tug.org/texlive/trunk@49031 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-cpal-table.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-cpal-table.hh | 204 |
1 files changed, 88 insertions, 116 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-cpal-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-cpal-table.hh index e354ced5c28..df4d9b4e7f1 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-cpal-table.hh +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-cpal-table.hh @@ -29,53 +29,8 @@ #define HB_OT_COLOR_CPAL_TABLE_HH #include "hb-open-type.hh" - - -/* - * Following parts to be moved to a public header. - */ - -/** - * hb_ot_color_t: - * ARGB data type for holding color values. - * - * Since: REPLACEME - */ -typedef uint32_t hb_ot_color_t; - - -/** - * hb_ot_color_palette_flags_t: - * @HB_OT_COLOR_PALETTE_FLAG_DEFAULT: default indicating that there is nothing special to note about a color palette. - * @HB_OT_COLOR_PALETTE_FLAG_FOR_LIGHT_BACKGROUND: flag indicating that the color palette is suitable for rendering text on light background. - * @HB_OT_COLOR_PALETTE_FLAG_FOR_DARK_BACKGROUND: flag indicating that the color palette is suitable for rendering text on dark background. - * - * Since: REPLACEME - */ -typedef enum { /*< flags >*/ - HB_OT_COLOR_PALETTE_FLAG_DEFAULT = 0x00000000u, - HB_OT_COLOR_PALETTE_FLAG_FOR_LIGHT_BACKGROUND = 0x00000001u, - HB_OT_COLOR_PALETTE_FLAG_FOR_DARK_BACKGROUND = 0x00000002u, -} hb_ot_color_palette_flags_t; - -// HB_EXTERN unsigned int -// hb_ot_color_get_palette_count (hb_face_t *face); - -// HB_EXTERN unsigned int -// hb_ot_color_get_palette_name_id (hb_face_t *face, unsigned int palette); - -// HB_EXTERN hb_ot_color_palette_flags_t -// hb_ot_color_get_palette_flags (hb_face_t *face, unsigned int palette); - -// HB_EXTERN unsigned int -// hb_ot_color_get_palette_colors (hb_face_t *face, -// unsigned int palette, /* default=0 */ -// unsigned int start_offset, -// unsigned int *color_count /* IN/OUT */, -// hb_ot_color_t *colors /* OUT */); - - - +#include "hb-ot-color.h" +#include "hb-ot-name.h" /* @@ -92,29 +47,46 @@ struct CPALV1Tail { friend struct CPAL; - inline bool - sanitize (hb_sanitize_context_t *c, const void *base, unsigned int palettes) const + private: + inline hb_ot_color_palette_flags_t + get_palette_flags (const void *base, + unsigned int palette_index, + unsigned int palette_count) const { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this) && - (base+paletteFlagsZ).sanitize (c, palettes) && - (base+paletteLabelZ).sanitize (c, palettes) && - (base+paletteEntryLabelZ).sanitize (c, palettes)); + if (!paletteFlagsZ) return HB_OT_COLOR_PALETTE_FLAG_DEFAULT; + return (hb_ot_color_palette_flags_t) (uint32_t) + hb_array (base+paletteFlagsZ, palette_count)[palette_index]; } - private: - inline hb_ot_color_palette_flags_t - get_palette_flags (const void *base, unsigned int palette) const + inline hb_ot_name_id_t + get_palette_name_id (const void *base, + unsigned int palette_index, + unsigned int palette_count) const { - // range checked at the CPAL caller - return (hb_ot_color_palette_flags_t) (uint32_t) (base+paletteFlagsZ)[palette]; + if (!paletteLabelsZ) return HB_OT_NAME_ID_INVALID; + return hb_array (base+paletteLabelsZ, palette_count)[palette_index]; } - inline unsigned int - get_palette_name_id (const void *base, unsigned int palette) const + inline hb_ot_name_id_t + get_color_name_id (const void *base, + unsigned int color_index, + unsigned int color_count) const { - // range checked at the CPAL caller - return (base+paletteLabelZ)[palette]; + if (!colorLabelsZ) return HB_OT_NAME_ID_INVALID; + return hb_array (base+colorLabelsZ, color_count)[color_index]; + } + + public: + inline bool sanitize (hb_sanitize_context_t *c, + const void *base, + unsigned int palette_count, + unsigned int color_count) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + (!paletteFlagsZ || (base+paletteFlagsZ).sanitize (c, palette_count)) && + (!paletteLabelsZ || (base+paletteLabelsZ).sanitize (c, palette_count)) && + (!colorLabelsZ || (base+colorLabelsZ).sanitize (c, color_count))); } protected: @@ -122,13 +94,13 @@ struct CPALV1Tail paletteFlagsZ; /* Offset from the beginning of CPAL table to * the Palette Type Array. Set to 0 if no array * is provided. */ - LOffsetTo<UnsizedArrayOf<HBUINT16>, false> - paletteLabelZ; /* Offset from the beginning of CPAL table to - * the Palette Labels Array. Set to 0 if no + LOffsetTo<UnsizedArrayOf<NameID>, false> + paletteLabelsZ; /* Offset from the beginning of CPAL table to + * the palette labels array. Set to 0 if no * array is provided. */ - LOffsetTo<UnsizedArrayOf<HBUINT16>, false> - paletteEntryLabelZ; /* Offset from the beginning of CPAL table to - * the Palette Entry Label Array. Set to 0 + LOffsetTo<UnsizedArrayOf<NameID>, false> + colorLabelsZ; /* Offset from the beginning of CPAL table to + * the color labels array. Set to 0 * if no array is provided. */ public: DEFINE_SIZE_STATIC (12); @@ -140,70 +112,70 @@ struct CPAL { static const hb_tag_t tableTag = HB_OT_TAG_CPAL; - inline bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - if (unlikely (!(c->check_struct (this) && // it checks colorRecordIndices also - // see #get_size - (this+colorRecordsZ).sanitize (c, numColorRecords)))) - return_trace (false); - - // Check for indices sanity so no need for doing it runtime - for (unsigned int i = 0; i < numPalettes; ++i) - if (unlikely (colorRecordIndicesZ[i] + numPaletteEntries > numColorRecords)) - return_trace (false); - - // If version is zero, we are done here; otherwise we need to check tail also - if (version == 0) - return_trace (true); - - const CPALV1Tail &v1 = StructAfter<CPALV1Tail> (*this); - return_trace (likely (v1.sanitize (c, this, numPalettes))); - } + inline bool has_data (void) const { return numPalettes; } inline unsigned int get_size (void) const - { - return min_size + numPalettes * sizeof (HBUINT16); - } + { return min_size + numPalettes * sizeof (colorRecordIndicesZ[0]); } - inline hb_ot_color_palette_flags_t get_palette_flags (unsigned int palette) const - { - if (unlikely (version == 0 || palette >= numPalettes)) - return HB_OT_COLOR_PALETTE_FLAG_DEFAULT; + inline unsigned int get_palette_count () const { return numPalettes; } + inline unsigned int get_color_count () const { return numColors; } - const CPALV1Tail& cpal1 = StructAfter<CPALV1Tail> (*this); - return cpal1.get_palette_flags (this, palette); - } + inline hb_ot_color_palette_flags_t get_palette_flags (unsigned int palette_index) const + { return v1 ().get_palette_flags (this, palette_index, numPalettes); } - inline unsigned int get_palette_name_id (unsigned int palette) const - { - if (unlikely (version == 0 || palette >= numPalettes)) - return 0xFFFF; + inline hb_ot_name_id_t get_palette_name_id (unsigned int palette_index) const + { return v1 ().get_palette_name_id (this, palette_index, numPalettes); } - const CPALV1Tail& cpal1 = StructAfter<CPALV1Tail> (*this); - return cpal1.get_palette_name_id (this, palette); - } + inline hb_ot_name_id_t get_color_name_id (unsigned int color_index) const + { return v1 ().get_color_name_id (this, color_index, numColors); } - inline unsigned int get_palette_count () const + inline unsigned int get_palette_colors (unsigned int palette_index, + unsigned int start_offset, + unsigned int *color_count, /* IN/OUT. May be NULL. */ + hb_color_t *colors /* OUT. May be NULL. */) const { - return numPalettes; + if (unlikely (palette_index >= numPalettes)) + { + if (color_count) *color_count = 0; + return 0; + } + unsigned int start_index = colorRecordIndicesZ[palette_index]; + hb_array_t<const BGRAColor> all_colors ((this+colorRecordsZ).arrayZ, numColorRecords); + hb_array_t<const BGRAColor> palette_colors = all_colors.sub_array (start_index, + numColors); + if (color_count) + { + hb_array_t<const BGRAColor> segment_colors = palette_colors.sub_array (start_offset, *color_count); + /* Always return numColors colors per palette even if it has out-of-bounds start index. */ + unsigned int count = MIN<unsigned int> (MAX<int> (numColors - start_offset, 0), *color_count); + *color_count = count; + for (unsigned int i = 0; i < count; i++) + colors[i] = segment_colors[i]; /* Bound-checked read. */ + } + return numColors; } - inline hb_ot_color_t - get_color_record_argb (unsigned int color_index, unsigned int palette) const + private: + inline const CPALV1Tail& v1 (void) const { - if (unlikely (color_index >= numPaletteEntries || palette >= numPalettes)) - return 0; + if (version == 0) return Null(CPALV1Tail); + return StructAfter<CPALV1Tail> (*this); + } - // No need for more range check as it is already done on #sanitize - const UnsizedArrayOf<BGRAColor>& color_records = this+colorRecordsZ; - return color_records[colorRecordIndicesZ[palette] + color_index]; + public: + inline bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + (this+colorRecordsZ).sanitize (c, numColorRecords) && + colorRecordIndicesZ.sanitize (c, numPalettes) && + (version == 0 || v1 ().sanitize (c, this, numPalettes, numColors))); } protected: HBUINT16 version; /* Table version number */ /* Version 0 */ - HBUINT16 numPaletteEntries; /* Number of palette entries in each palette. */ + HBUINT16 numColors; /* Number of colors in each palette. */ HBUINT16 numPalettes; /* Number of palettes in the table. */ HBUINT16 numColorRecords; /* Total number of color records, combined for * all palettes. */ |