| How to keep the relation of the sides of a figure? [message #212487] |
Sat, 29 November 2008 09:57  |
Eclipse User |
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Originally posted by: cayla_sha.gmx.net
Hello!
How can I preserve the relation of the sides? When the user drags at the
sides of the figure to make it bigger or smaller he can distort the shape.
I have, for example, a shape, that has height=45 and width=30 as
default. Now I want, that the ratio/relation/proportion of the sides is
always 45:30.
Where can I put the code to monitor the change?
A notification is not thrown until the user releases the mouse after
dragging. At this point I get the new width and height within the
notification and then I just can ask, if the new w and h has the right
ratio. And if not, I can take the old w and h. But the user will never
be abel to adjust the exact right ratio with the mouse. So in reality
the user wouldn`t be abel to resize the figure anymore, aside from
people with a proper amount of luck ;)
I know, that there is a Resize Constraint in the gmfgraph, but this
Constraint just prevents from dragging into one (or more) specific
direction. I want to allow dragging into any direction, but just within
my ratio.
Thanks in advance!
Best wishes!
Julia
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