Thread: Simple Google Maps like Image viewer in Java

Originally Posted by Mr.777

Well, i can not tell you, what to write but can guide you as forums rules don't allow to spoon feed. So, i can simply tell you one more thing, that your painComponent() function is drawing the image everytime at the same location, so that when you release the mouse, it gets back to it's original position that is set in your function like,

g2D.drawImage(bi, dx, dy, scale*image.getWidth(this), scale*image.getHeight(this), this);

So, as a hint i can tell you, when you move the image to some place, get the coordinates and place in the above line so that your image drawing must be generic everytime, not hard coded. As above mentioned line.

I understand that you are telling me not to use hard coded parameters like dx and dy. But logically lastx and lasty will be the last position where the image is, but if I use lastx and lasty in the drawImage function, it still jumps.

It jumps coz the size of image is too large and it takes your image to the mouse position whenever you try to drag it.
Hint: Let mouse drag the image if mouse is inside the image coordinates.