<Color where the user touches the screen - kotlin ...

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Color where the user touches the screen - kotlin android
I have this function that allows the user to paint on the screen. It works correctly in the emulator; where I touch, the screen is painted. However, when I tested it on my tablet, it is very offset. If I click in the middle of the screen, it paints in the bottom right corner. Does anyone know how to fix this offset?
private fun handleTouch(event: MotionEvent): Boolean {
val drawable = drawable ?: return false

// Calcule as coordenadas corrigidas
val imageWidth =...