CODEWITHSUNDEEP
javaswingtransparentjeditorpane
700 Software
700 Software

Reputation: 87873

Transparent JEditorPane in a JScrollPane over a background JPanel

If I move the JScrollPane so it is in front of and partially covering the JPanel, then the JEditorPane inside of the JScrollPane has paint issues. It does not properly re-paint the JPanel's background. So you end up with screen painting issues when you scroll.

I have tried the overlap using the following methods - JScrollPane inside of JPanel - JScrollPane partially covering JPanel using FreeLayout (NetBeans GUI Builder) - JScrollPane partially covering JPanel using JLayeredPane

The JPanel has a solid background right now, but I will extend it to have a gradient as soon as I get solid background to work.

How can I get the JEditorPane to bring in the cropped background from the JPanel?

I am making it transparent using jEditorPane.setBackground(new Color(0,0,0,0))

I tried using setOpaque(false) like you would do for a panel, but that just seems to put back a default background if you do it to JEditorPane.

Original question by a co-worker: https://stackoverflow.com/questions/6364460/jframe-screen-paint-issues-when-using-transparency

The original question was not as well written and did not seem to bring good answers.

Responses to co-worker question suggestions:

Upvotes: 4

Views: 4116

Answers (1)

camickr
camickr

Reputation: 324197

The Background Panel class has code that attempts to make all component non-opaque so the background will show through.

Edit:

If you want to play with transparent background then you can check out Backgrounds With Transparency for an explanation of the problem and a couple of solutions.

In this case the BackgroundPane is the easier solution.

Upvotes: 5

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