Question

I want to know that can mouse click event detects colors or even strings.

For instance I have drawn yellow filled oval on screen and I want that if mouse clicked on that color, it will cause specific event to occur. Likewise I may have other different drawings on screen and i want different event occur for different colors.

Would it be possible in Java graphics?

Answer 1

You can do it as;

• Get screen coordinates of the click event
• Get the color of the screen at the given coordinates
• Then do your job according to the color

pseudo code:

public void mousePressed(MouseEvent e)
{ 
   Robot robot = new Robot();
   Color clickedColor = robot.getPixelColor(e.getX(),e.getY());
   doSomething(clickedColor);
}

Detecting strings from an image is whole anoher subject. You need to search into “character/text recognition” in computer vision field. There are off the shelf libraries doing that.