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Is it possible to paint a background color for a Text in Javafx 8?
Hello,
we are currently designing an application where the user imports some text which is then analyzed for specific keywords. These keywords should then be highlighted in the text so that the user can easily see which words have been found.
Now with Java 8 we'd like to use the new TextFlow class for this. I know that I can easily change the font of the words that have been identified, but it would also be nice if I could add a background color for even easier visual scanning of the text. Is there anyway how to achieve this using the Text class? I know that I could also add a label to the TextFlow, however this would break the flow of the Text because sometimes we also need to highlight larger parts of the text, and if that text extends beyond the end of the line the linkebreaks will just be hideous.
I already thought about subclassing Text and a background, but simply do not know where I would have to change the way how the rendering happens.
Any tips would be appreciated
Best Answer
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Ok, for anyone stumbling across this from a google search: After a lot of digging I've found that the only way to add this functionality requires subclassing the not public API NGText and adding the feature in the renderContent2D method. Sadly however the impl_createPeer method in Text is final, so while one could add the functionality by subclassing Text and NGText, it is not possible to actually use it, see Ticket https://javafx-jira.kenai.com/browse/RT-35801
Therefore I've openened a ticket at Jira requesting such a feature: https://javafx-jira.kenai.com/browse/RT-35822
Answers
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I'm just spitballing here, but have you considered adding a TextFlow to a TextFlow?
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Thanks David, but I just tried it and that does not work. So far I have found out that there is a tight coupling between Text and Textflow, where Text behaves differently when it's parent is a Textflow. All other nodes added to the Textflow are simply laid out using a FlowPane.
-
Ok, for anyone stumbling across this from a google search: After a lot of digging I've found that the only way to add this functionality requires subclassing the not public API NGText and adding the feature in the renderContent2D method. Sadly however the impl_createPeer method in Text is final, so while one could add the functionality by subclassing Text and NGText, it is not possible to actually use it, see Ticket https://javafx-jira.kenai.com/browse/RT-35801
Therefore I've openened a ticket at Jira requesting such a feature: https://javafx-jira.kenai.com/browse/RT-35822