Grx.Context.prototype.flood_spill
Replaces old color with new color in the context in the area bounded by the rectangle x1, y1, x2, y2.
This is quite useful for highlighting a selected item in a list, or changing a selected color(s) in a multi colored area.
Also see Grx.flood_spill for operating on the current context.
- x1
the left edge of the bounding rectangle
- y1
the top edge of the bounding rectangle
- x2
the right edge of the bounding rectangle
- y2
the bottom edge of the bounding rectangle
- old_c
the color to be replaced
- new_c
the new color