Enum freetype::bitmap::PixelMode[][src]

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[src]

impl Copy for PixelMode[src]

impl Debug for PixelMode[src]

impl Eq for PixelMode[src]

impl PartialEq<PixelMode> for PixelMode[src]

impl StructuralEq for PixelMode[src]

impl StructuralPartialEq for PixelMode[src]

Auto Trait Implementations

impl RefUnwindSafe for PixelMode

impl Send for PixelMode

impl Sync for PixelMode

impl Unpin for PixelMode

impl UnwindSafe for PixelMode

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.