Continuous MouseDown Colorization of Graphic Grid?
johnpatten at mac.com
Mon Jan 25 15:15:32 CST 2010
I've created a grid of graphic rectangles that I can colorize and make
transparent (blend). I would like to be able to let the user drag the
mouse while holding the mouse button down and colorize each rectangle
they drag across. On the flip side, if the rectangle is already
colorized, I would like to it to turn it's blend level to 100 and set
its color to empty. Again, if there were a series of rectangles in the
grid that were colorized, dragging across them with the mouse down
with de-colorize them.
I can't seem to get my head around the mousedown while dragging part?
I've tried mouseEnter, but that gets messy when accidentally dragging
over a rect in the grid you don't want colorized; I have tried
MouseStillDown with no luck there either.
Anyone done anything similar with a transparent grid?
The grid would sit on top of an image, like for example a map, and the
colorizing would enable the user to, essentially, focus in on a
particular part of the image below.
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