Add a fake (without any use) caret

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Ilan147963
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I got two questions:

1. I want to show another caret (with a given offset) in a different color and that I can update for any position. How is that possible?

2. What is the fastest or most effective way to receive caret position offset for every caret change?

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Karol Lewandowski
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Hi,

  1. There is no API to introduce fake caret. What is your use case? We will try to suggest you some approach.
  2. Consider com.intellij.openapi.editor.event.CaretListener.caretPositionChanged() (see its limitation in JavaDoc).
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Ilan147963
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For the first question, I would like to get an offset for a caret (let's say I got it from function caretPositionChanged()) and draw in this offset some type of rectangle or any sign that will show the user there is a caret there. It might remind Google Docs, the sign of other users typing is the thing I am trying to implement here.

 

For the second question, it might be the thing I am looking for, thanks! 

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Karol Lewandowski
Created

Hi Ilan,

It sounds like you try to implement something similar to the Code With Me feature available in IDEA: https://www.jetbrains.com/code-with-me/. Maybe there is no need to implement your feature at all if Code With Me covers it.

If you need to do something else, please take a look at the following APIs:

  • com.intellij.openapi.editor.Editor.getInlineModel()
  • com.intellij.openapi.editor.Inlay and com.intellij.openapi.editor.EditorCustomElementRenderer

You can implement your EditorCustomElementRenderer drawing a cursor you need.

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