[cairo-bugs] [Bug 57289] Cairo context should provide cairo_set_target

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57289

Andrej Mitrovic <andrej.mitrovich at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrej.mitrovich at gmail.com

--- Comment #1 from Andrej Mitrovic <andrej.mitrovich at gmail.com> ---
There was a proposal for cairo_/save/restore/_state[1] back in 2006, but it
seems it never got implemented.

[1] : http://lists.freedesktop.org/archives/cairo/2006-January/006196.html

My needs are to be able to replace the target surface without losing internal
state (such as the line width settings). For example I could have a widget with
a backing store which a user paints on using a cairo_t context. If the widget
size changes (e.g. becomes larger), the backing store might have to be
reallocated, but then a new cairo_t context has to be created for the new
surface.

Currently that means losing all internal stack state (e.g. the user's line
width, etc). 

Either the ability to store and load the internal state externally or the
ability to replace the internal surface would work for me.

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