The CairoFormat class
(No version information available, might only be in SVN)
CairoFormat enums are used to identify the memory format of the image data.
Sommario dellla classe
Each pixel is a 32-bit quantity, with alpha in the upper 8 bits, then red, then green, then blue. The 32-bit quantities are stored native-endian. Pre-multiplied alpha is used. (That is, 50% transparent red is 0x80800000, not 0x80ff0000.)
Each pixel is a 32-bit quantity, with the upper 8 bits unused. Red, Green, and Blue are stored in the remaining 24 bits in that order.
Each pixel is a 8-bit quantity holding an alpha value.
Each pixel is a 1-bit quantity holding an alpha value. Pixels are packed together into 32-bit quantities. The ordering of the bits matches the endianess of the platform. On a big-endian machine, the first pixel is in the uppermost bit, on a little-endian machine the first pixel is in the least-significant bit.
Indice dei contenuti
- CairoFormat::strideForWidth — Provides an appropiate stride to use