Enum freetype::bitmap::PixelMode [−][src]
pub enum PixelMode { None, Mono, Gray, Gray2, Gray4, Lcd, LcdV, Bgra, }
Expand description
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
This value is reserved.
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.
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).
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.
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.
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.
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.
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
Auto Trait Implementations
impl RefUnwindSafe for PixelMode
impl UnwindSafe for PixelMode
Blanket Implementations
Mutably borrows from an owned value. Read more