Converts coverage in pixel units to the 0..256 blending fractions expected by `InterpolateColors()` and `MixColors()`.

Called for arcs with area <= 64 pixels.

Called for rectangles with area <= 64 pixels.

Called for rectangles with area <= 64 pixels.

Called for rects with area <= 64 pixels.

This function will fill in the specified rectangle using the most appropriate method given the stream's transparency mode.

Left side bearing.

Top side bearing.

Flip the horizontal direction.

Return the `idx`-th color.

Return kerning adjustment for a pair of code points. The returned value is in pixels and should be added to the base advance of the left glyph. Fonts

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Return whether horizontal direction is left-to-right.

Return whether this surface is write-once.

Set the x offset applied to drawables.

Replace the output device pointer.