A prototype for clickable maps

[riverwanderer]

Pilot implementation of this idea.

Includes console logging code.

[rlament]

In addition to scaling you need to apply a translation for the top left visible corner of the map. It works fine when the map is fully zoomed out, but once zoomed in it reports the wrong ones.

mouseReleased may not be the best event to hook. This event fires on control-click, shift-click, dragging a stack into the zone, click drag and release of the mouse and maybe others. The user might try to multiselect a number of counters with a bounding box, which should not generate a zone click event. Untested and just guessing that mouseClick might be a better option.

For a clickable zone there should be some feedback to the user that the zone is the active control much like pressing on a button control. That would mean adding some effect to the zone on mousePressed. But then possibly cancelling that on a mouse drag?

In my module there are both convex and concave zones. As long as the map was fully zoomed out the zone selection was pretty good. Because zones may not perfectly align with the underlying bitmap, a dead band around the zone edges would be nice, but not easy to implement. Although if there is a visual effect, like shading the zone on mouse press, it would be obvious which is the selected zone.

Something else to consider: if the user inadvertently clicks on a zone, how do they cancel out of it?

This is an interesting start but there's a lot more involved to make it a workable feature.