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[sbix] Clean up

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This commit is contained in:
Behdad Esfahbod 2018-03-11 20:38:40 +01:00
parent 218fa7166e
commit fb0f3e3767
1 changed files with 37 additions and 33 deletions
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70
src/hb-ot-color-sbix-table.hh
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@ -34,33 +34,43 @@ namespace OT {
struct SBIXGlyph
{
friend struct sbix;
protected:
HBINT16 originOffsetX;
HBINT16 originOffsetY;
unsigned char tag[4];
HBUINT8 data[VAR];
HBINT16 xOffset; /* The horizontal (x-axis) offset from the left
* edge of the graphic to the glyph’s origin.
* That is, the x-coordinate of the point on the
* baseline at the left edge of the glyph. */
HBINT16 yOffset; /* The vertical (y-axis) offset from the bottom
* edge of the graphic to the glyph’s origin.
* That is, the y-coordinate of the point on the
* baseline at the left edge of the glyph. */
Tag graphicType; /* Indicates the format of the embedded graphic
* data: one of 'jpg ', 'png ' or 'tiff', or the
* special format 'dupe'. */
HBUINT8 data[VAR]; /* The actual embedded graphic data. The total
* length is inferred from sequential entries in
* the glyphDataOffsets array and the fixed size
* (8 bytes) of the preceding fields. */
public:
DEFINE_SIZE_STATIC (9);
DEFINE_SIZE_ARRAY (8, data);
};
struct ImageTable
struct SBIXStrike
{
friend struct sbix;
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
c->check_array (imageOffsetsZ, sizeof (HBUINT32), c->num_glyphs) &&
c->check_range (this, imageOffsetsZ[c->num_glyphs]));
c->check_array (imageOffsetsZ,
sizeof (HBUINT32),
1 + c->num_glyphs));
}
HBUINT16 ppem; /* The PPEM size for which this strike was designed. */
HBUINT16 resolution; /* The device pixel density (in PPI) for which this
* strike was designed. (E.g., 96 PPI, 192 PPI.) */
protected:
HBUINT16 ppem;
HBUINT16 resolution;
LOffsetTo<SBIXGlyph> imageOffsetsZ[VAR]; // VAR=maxp.numGlyphs + 1
/* Offset from the beginning of the strike data header
* to bitmap data for an individual glyph ID. */
public:
DEFINE_SIZE_STATIC (8);
};
@ -87,40 +97,34 @@ struct sbix
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
if (!(c->check_struct (this) && imageTables.sanitize (c, this)))
return_trace (false);
for (unsigned int i = 0; i < imageTables.len; ++i)
if (!(imageTables[i].sanitize (c, this)))
return_trace (false);
// dump (c->num_glyphs, 8);
return_trace (true);
return_trace (c->check_struct (this) && strikes.sanitize (c, this));
}
// inline void dump (unsigned int num_glyphs, unsigned int group) const
// {
// const ImageTable &imageTable = imageTables[group](this);
// const SBIXStrike &strike = strikes[group](this);
// for (unsigned int i = 0; i < num_glyphs; ++i)
// if (imageTable.imageOffsetsZ[i + 1] - imageTable.imageOffsetsZ[i] > 0)
// if (strike.imageOffsetsZ[i + 1] - strike.imageOffsetsZ[i] > 0)
// {
// const SBIXGlyph &sbixGlyph = imageTable.imageOffsetsZ[i]((const void *) &imageTable);
// const SBIXGlyph &sbixGlyph = strike.imageOffsetsZ[i]((const void *) &strike);
// char outName[255];
// sprintf (outName, "out/%d-%d.png", group, i);
// FILE *f = fopen (outName, "wb");
// fwrite (sbixGlyph.data, 1,
// imageTable.imageOffsetsZ[i + 1] - imageTable.imageOffsetsZ[i] - 8, f);
// strike.imageOffsetsZ[i + 1] - strike.imageOffsetsZ[i] - 8, f);
// fclose (f);
// }
// }
protected:
HBUINT16 version;
HBUINT16 flags;
ArrayOf<LOffsetTo<ImageTable>, HBUINT32> imageTables;
HBUINT16 version; /* Table version number — set to 1 */
HBUINT16 flags; /* Bit 0: Set to 1. Bit 1: Draw outlines.
* Bits 2 to 15: reserved (set to 0). */
ArrayOf<LOffsetTo<SBIXStrike>, HBUINT32>
strikes; /* Offsets from the beginning of the 'sbix'
* table to data for each individual bitmap strike. */
public:
DEFINE_SIZE_ARRAY (8, imageTables);
DEFINE_SIZE_ARRAY (8, strikes);
};
} /* namespace OT */