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Specifies the type of hinting to do on font outlines. Hinting is the process of fitting outlines to the pixel grid in order to improve the appearance of the result. Since hinting outlines involves distorting them, it also reduces the faithfulness to the original outline shapes. Not all of the outline hinting styles are supported by all font backends.
CairoHintStyle::STYLE_DEFAULTUse the default hint style for font backend and target device
CairoHintStyle::STYLE_NONEDo not hint outlines
CairoHintStyle::STYLE_SLIGHTHint outlines slightly to improve contrast while retaining good fidelity to the original shapes.
CairoHintStyle::STYLE_MEDIUMHint outlines with medium strength giving a compromise between fidelity to the original shapes and contrast
CairoHintStyle::STYLE_FULLHint outlines to maximize contrast