data GCtx = GC GCId FontStruct rootGCtx :: GCtx wCreateGCtx :: (FontGen b, FudgetIO e, ColorGen a) => GCtx -> [GCAttributes a b] -> (GCtx -> e c d) -> e c d createGCtx :: (FontGen b, FudgetIO e, ColorGen a) => Drawable -> GCtx -> [GCAttributes a b] -> (GCtx -> e c d) -> e c d
Values of type
GCtx contain a GCId and the FontStruct of
the font used by the GC.
GCtxs are used by the rendering system for Drawings. For
efficiency, rather than embedding drawing attributes (e.g., color and font
names) in drawings, an appropriate
GCtx can be created in advance
and included in the drawing.
wCreateGCtx creates a new
GCtx by modifying a template
rootGCtx can be used as a template, but should not be used for any
Data type for composite graphics: Drawing.
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