I am making an IntelliJ plugin that detects certain code convention violations. What I would like to do is color code the background of a block of code where a violation has been detected (see example below). I have found plenty of documentation for change foreground text (Annotators, Customer language support etc...), but no documentation on how to change the background of a block of code.
What I need is quite simple, given a start and end char position, I simply need to color-code the background of that chunk in a given color (and be able to remove the color coding later)
Example:
If anyone could point me to the appropriate documentation, or code examples of how to do this, it would be much appreciated. Thanks in advance.
An annotator allows you to change any attributes of a code block, including background color.
Also, if you're writing a tool that detects code convention violations, such tools are normally written as inspections. If you write an inspection, IntelliJ IDEA automatically highlights the code where you report a problem as a warning, by changing its background color.