Enum freetype::bitmap::PixelMode

pub enum PixelMode {
    None,
    Mono,
    Gray,
    Gray2,
    Gray4,
    Lcd,
    LcdV,
    Bgra,
}

An enumeration type used to describe the format of pixels in a given bitmap. Note that additional formats may be added in the future.

Variants

None

This value is reserved.

Mono

A monochrome bitmap, using 1 bit per pixel. Note that pixels are stored in most-significant order (MSB), which means that the left-most pixel in a byte has value 128.

Gray

An 8-bit bitmap, generally used to represent anti-aliased glyph images. Each pixel is stored in one byte. Note that the number of gray levels is stored in the num_grays field of the FT_Bitmap structure (it generally is 256).

Gray2

A 2-bit per pixel bitmap, used to represent embedded anti-aliased bitmaps in font files according to the OpenType specification. We haven't found a single font using this format, however.

Gray4

A 4-bit per pixel bitmap, representing embedded anti-aliased bitmaps in font files according to the OpenType specification. We haven't found a single font using this format, however.

Lcd

An 8-bit bitmap, representing RGB or BGR decimated glyph images used for display on LCD displays; the bitmap is three times wider than the original glyph image. See also FT_RENDER_MODE_LCD.

LcdV

An 8-bit bitmap, representing RGB or BGR decimated glyph images used for display on rotated LCD displays; the bitmap is three times taller than the original glyph image. See also FT_RENDER_MODE_LCD_V.

Bgra

An image with four 8-bit channels per pixel, representing a color image (such as emoticons) with alpha channel. For each pixel, the format is BGRA, which means, the blue channel comes first in memory. The color channels are pre-multiplied and in the sRGB colorspace. For example, full red at half-translucent opacity will be represented as 00,00,80,80, not 00,00,FF,80. See also FT_LOAD_COLOR.

Trait Implementations

impl Debug for PixelMode

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for PixelMode

fn clone(&self) -> PixelMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for PixelMode