The CairoFormat class
(PECL cairo >= 0.1.0)
Введение
CairoFormat enums are used to identify the memory format of the image data.
Обзор классов
Предопределенные константы
CairoFormat::ARGB32
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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.)
CairoFormat::RGB24
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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.
CairoFormat::A8
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Each pixel is a 8-bit quantity holding an alpha value.
CairoFormat::A1
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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.
Содержание
- CairoFormat::strideForWidth — Provides an appropiate stride to use
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Обработка и генерация изображений
- Введение
- Установка и настройка
- Предопределенные константы
- Примеры
- Cairo
- Класс Cairo
- The CairoContext class
- The CairoException class
- The CairoStatus class
- The CairoSurface class
- Svg Surface Backend
- The CairoImageSurface class
- Класс CairoPdfSurface
- Класс CairoPsSurface
- Класс CairoSurfaceType
- The CairoFontFace class
- The CairoFontOptions class
- The CairoFontSlant class
- The CairoFontType class
- The CairoFontWeight class
- Класс CairoScaledFont
- The CairoToyFontFace class
- The CairoPatternType class
- The CairoPattern class
- The CairoGradientPattern class
- Класс CairoSolidPattern
- Класс CairoSurfacePattern
- The CairoLinearGradient class
- Класс CairoRadialGradient
- The CairoAntialias class
- The CairoContent class
- Класс CairoExtend
- The CairoFormat class
- The CairoFillRule class
- The CairoFilter class
- The CairoHintMetrics class
- The CairoHintStyle class
- The CairoLineCap class
- Класс CairoLineJoin
- The CairoMatrix class
- The CairoOperator class
- The CairoPath class
- Класс CairoPsLevel
- Класс CairoSubpixelOrder
- Класс CairoSvgVersion
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