Improving the views preview

[egofree71]

In the rooms editor, when a view is selected in the views list, it is displayed now centered in the room. Also, the 'Object to follow' property is now taken into account with the border zone too.
In preference settings, the 'Undo history size' has been added. If you put 0, the undo is disabled, and if you put -1 it will be unlimited.

[RobertBColton]

Very nice ego, will test it when I have time. But I did want to see a screenshot of it with inverted colors to see if that's more recognizable.

[JPierreS]

I agree with the inverted colour, (which should be optional too),
but also (that might be stretching it) but for multiple views, putting the number on the corner of the box to identify what view number (0-7) the rectangular area covers.
Yes I know rectangled is not a word, whatever :D

Edit: Use rectangular you silly goose.

[egofree71]

RobertBColton,Darkstar2 :
Why not, but first let's accept my pull request ! :-)
A remark concerning the 'object to follow' option : it is based on the first instance of the object in the room. If you are in the 'views' tab, you can't modify objects, and the views will be always up-to-date. If you activate the 'show views' option in the rooms editor menu, it calculates again the views position with the first instance, and it's fine. But then if you modify some objects instances in the room, the views with 'object to follow' option set will not be updated automatically. It would be overkill to do this. This would mean that every time we modify an object instance, we have to check if there is a view with an instance of this object and test if this instance is the first in the room. I know that in LateralGM there is some mechanisms to link automatically properties, but in this case i don't think it would work. Indeed, the view is linked to an 'object' not to an instance, so this link is 'fragile'. (Ideally the view 'Object to follow' option should be linked to an instance, but it's not really needed, because it was just made for following the player).
But i don't think it's a big deal, as the user can go in the views tab or deactivate and activate the 'show views' option, and see the result of his modification, and anyway this option was made 99% of the time for following the player.

[egofree71]

I've added the border zone preview, and the 'undo history size' setting.
IsmAvatar : if you are reading this comment, i would be grateful if you could commit this pull request.

[IsmAvatar]

Merging after a brief review, and positive feedback.

[IsmAvatar]

Also, @egofree71 would appreciate it if you could take a look at #127

[egofree71]

Robert:
For a screenshot with inverted colors : http://enigma-dev.org/forums/index.php?topic=2082.15