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Editorial Team
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Asked: 2026-05-14T23:56:32+00:00

Is there a way to make a PyGTK widget partly transparent, so that the

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Is there a way to make a PyGTK widget partly transparent, so that the widgets behind it can be seen through it? Specifically I’m trying to do this on a label, for typographic effect; I don’t want to change the color instead, as it may not look right on all themes.

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  1. Editorial Team

    No, not possible. It is possible to make entire windows partially transparent, if window manager supports compositing, but not individual widgets.

    I guess what you want can be achieved differently by “blending” colors:

    def blend (color1, color2, weight = 0.5):
    return gtk.gdk.Color (
        color1.red_float   * weight + color2.red_float   * (1 - weight),
        color1.green_float * weight + color2.green_float * (1 - weight),
        color1.blue_float  * weight + color2.blue_float  * (1 - weight))

for state in gtk.StateType.__enum_values__:
    label.modify_fg (state, blend (label.style.fg[state], label.style.bg[state]))

    To make it completely correct you can also listen to “style-set” signal.

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