The CairoContent class

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CairoContent is used to describe the content that a surface will contain, whether color information, alpha information (translucence vs. opacity), or both.

Note: The large values here are designed to keep CairoContent values distinct from CairoContent values so that the implementation can detect the error if users confuse the two types.

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CairoContent {
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const integer COLOR = 4096 ;
const integer ALPHA = 8192 ;
const integer COLOR_ALPHA = 12288 ;
}

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CairoContent::COLOR

The surface will hold color content only.

CairoContent::ALPHA

The surface will hold alpha content only.

CairoContent::COLOR_ALPHA

The surface will hold color and alpha content.