Wrong area captured when using 'Select Area to Grab' on a multi-monitor display

[Margarita Manterola]

Hi,

Tested on precise (gnome-screenshot version 3.4.1-0ubuntu1.1), running Unity.

This problem happens in multi-monitor setups where the screens don't all have the same size. It's been reproduced with 3 and 4 screens.

The issue is that when using the 'Select Area to Grab' option of gnome-screenshot in such a setup, the area selected and the area actually grabbed in the screenshot are not the same. This is likely caused by some offset that is not being taken into account.

I'll be attaching a few images to illustrate the problem, one with the whole desktop, where it's clear the the monitors don't all have the same sizes (or orientation). One with the selected window correctly captured, and one with a selected area captured which should match the selected window image, but doesn't.

[Margarita Manterola (marga-9)]

This last image should be identical to the previous one, but instead the area grabbed is a completely different part of the desktop.