Module bitmap 

Embedded bitmap glyphs.

A font stores its bitmaps in strikes, one per size. BitmapStrikes reads them from the first of sbix, CBDT and EBDT that a GlyphSourceOrder prefers. It selects a Strike for a size, and a strike returns a BitmapGlyph. The pixels of a BitmapGlyph can be read without knowing how the table stores them.

Structs

Bgra

Uncompressed 32-bit color pixels.

BitmapGlyph

An embedded bitmap glyph.

BitmapStrikes

The bitmap strikes of a font, read from a single table.

Mask

A single channel coverage mask of 1, 2, 4 or 8 bits per pixel.

MaskRow

One row of a Mask.

Strike

A set of bitmaps at one size.

Enums

BitmapSource

A table that provides bitmaps.

Kind 🔒

Origin

The corner of a bitmap that the inner bearings position.

Pixels

Pixel data for a bitmap glyph.

StrikeKind 🔒

Constants

MAX_SBIX_DUPES 🔒

The maximum number of dupe entries to follow.

PNG_SIGNATURE 🔒

The eight-byte signature at the start of every PNG file.

Functions

closer_to 🔒

Returns true if a strike of candidate pixels per em is a better match for ppem than a strike of best.

sbix_bearings 🔒

Returns the bearings used to position an sbix bitmap, in font units.

sbix_glyph 🔒

Reads a PNG glyph from an sbix strike.