[PATCH] Multiline centered text

[fcxSanya]

Currently text centered by the first line position, so if there is multiple lines, each line will have the same indention as the first one instead of be centered individually.

[fcxSanya]

Attached patch should fix this issue and should allow to properly display multiline centered text.

[Philip]

I get some minor compiler errors:

../../../source/gui/IGUITextOwner.cpp:123: error: ‘>>’ should be ‘> >’ within a nested template argument list
../../../source/gui/CGUI.cpp:977: error: no matching function for call to ‘min(unsigned int&, size_t)’

On the main menu, if I click the WFG logo in the bottom-left corner it pops up an "About 0 A.D." box. The "0" icon in the centered title bar is incorrectly aligned - presumably something is wrong with the sprite code but I can't tell what...

This seems like a pretty large change to the code - is it really all necessary just to get centered text? I've tried hacking up a much simpler patch to CGUI::DrawText to center all text, which looks like it basically works. Am I missing problems with this approach? (That patch needs some more work to support left-aligned and right-aligned text but that doesn't look hard.)

[Philip]

alternative approach (incomplete)