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Thread: How can I repaint() an entire JPanel, except for a specific area?

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    Default How can I repaint() an entire JPanel, except for a specific area?

    How can I repaint() an entire JPanel, **except** for a large group of pixels that aren't necesserily organized in a rectangle? (Like a big group of pixels forming a scribbled line)?
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    Default Re: How can I repaint() an entire JPanel, except for a specific area?

    Here's an idea: Create a BufferedImage and make the pixels fully transparent where you want the underneath image to show through and draw on the rest as desired. Draw the underneath image and then draw the custom BI over the top.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: How can I repaint() an entire JPanel, except for a specific area?

    Excellent idea, Norm.

    I haven't looked at it for some time, but I also know there's a way to "watermark" the drawing area. I believe there are actually layers or separate panes to the JComponent's drawing surface that can be drawn on separately so that the permanent image can be drawn on one pane atop or behind another that is subject to change by the normal means. Look into this idea by searching "jcomponent drawing panes", "jpanel watermark", or similar.

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