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 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 Debug for PixelMode

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

Formats the value using the given formatter.

impl PartialEq<PixelMode> for PixelMode

fn eq(&self, other: &PixelMode) -> 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 PixelMode

impl Eq for PixelMode

impl StructuralEq for PixelMode

impl StructuralPartialEq for PixelMode