gdkPixbufRenderThresholdAlpha
Takes the opacity values in a rectangular portion of a pixbuf and thresholds them to produce a bi-level alpha mask that can be used as a clipping mask for a drawable.
gdkPixbufRenderThresholdAlpha(object, bitmap, src.x, src.y, dest.x,
dest.y, width = -1, height = -1, alpha.threshold) |
A pixbuf. |
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Bitmap where the bilevel mask will be painted to. |
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Source X coordinate. |
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source Y coordinate. |
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Destination X coordinate. |
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Destination Y coordinate. |
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Width of region to threshold, or -1 to use pixbuf width |
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Height of region to threshold, or -1 to use pixbuf height |
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Opacity values below this will be painted as zero; all other values will be painted as one. |
Derived by RGtkGen from GTK+ documentation
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