Enum ttf_parser::RasterImageFormat

pub enum RasterImageFormat {
    PNG,
    BitmapMono,
    BitmapMonoPacked,
    BitmapGray2,
    BitmapGray2Packed,
    BitmapGray4,
    BitmapGray4Packed,
    BitmapGray8,
    BitmapPremulBgra32,
}

A glyph raster image format.

Variants

PNG

BitmapMono

A monochrome bitmap.

The most significant bit of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. The data for each row is padded to a byte boundary, so the next row begins with the most significant bit of a new byte. 1 corresponds to black, and 0 to white.

BitmapMonoPacked

A packed monochrome bitmap.

The most significant bit of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. Data is tightly packed with no padding. 1 corresponds to black, and 0 to white.

BitmapGray2

A grayscale bitmap with 2 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. The data for each row is padded to a byte boundary, so the next row begins with the most significant bit of a new byte.

BitmapGray2Packed

A packed grayscale bitmap with 2 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. Data is tightly packed with no padding.

BitmapGray4

A grayscale bitmap with 4 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. The data for each row is padded to a byte boundary, so the next row begins with the most significant bit of a new byte.

BitmapGray4Packed

A packed grayscale bitmap with 4 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. Data is tightly packed with no padding.

BitmapGray8

A grayscale bitmap with 8 bits per pixel.

The first byte corresponds to the top-left pixel, proceeding through succeeding bytes moving left to right.

BitmapPremulBgra32

A color bitmap with 32 bits per pixel.

The first group of four bytes corresponds to the top-left pixel, proceeding through succeeding pixels moving left to right. Each byte corresponds to a color channel and the channels within a pixel are in blue, green, red, alpha order. Color values are pre-multiplied by the alpha. For example, the color “full-green with half translucency” is encoded as \x00\x80\x00\x80, and not \x00\xFF\x00\x80.

Trait Implementations

impl Clone for RasterImageFormat

fn clone(&self) -> RasterImageFormat

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RasterImageFormat

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for RasterImageFormat

fn eq(&self, other: &RasterImageFormat) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for RasterImageFormat

impl Eq for RasterImageFormat

impl StructuralEq for RasterImageFormat

impl StructuralPartialEq for RasterImageFormat