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How translate between display and control coordinates? [message #441984]

Fri, 27 August 2004 00:32

Jonathan Edwards

Messages: 27
Registered: July 2009

Junior Member

I want to map the current mouse cursor (in Display coord's) to a
control's coordinate system.

The obvious algorithm of adding up the getLocation() of the parents up
to the Shell doesn't work. Shell.getLocation() returns the location of
the upper left corner of the outside of the shell's trim, while all the
controls inside are relative to the inside of the trim. How do I account
for the trim size? Is this a bug or just impossible through the API?
[Eclipse 3.0, Win XP]

Thanks,
Jonathan

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Re: How translate between display and control coordinates? [message #441985 is a reply to message #441984]

Fri, 27 August 2004 00:59

Peter Sommerfeld

Messages: 12
Registered: July 2009

Junior Member

"Jonathan Edwards" wrote:
> I want to map the current mouse cursor (in Display coord's) to a
> control's coordinate system.

import org.eclipse.swt.widgets.*;

Point map(Control from, Control to, Point point)
Point map(Control from, Control to, int x, int y)

Rectangle map(Control from, Control to, Rectangle)
Rectangle map(Control from, Control to, int x, int y, int width, int height)

Point xy = display.map(display, shell, mouse.x, mouse.y);

regards

Peter

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