Changelog 2.10: Difference between revisions

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'''Canvas System'''
'''Canvas System'''
The fully scriptable [[Canvas]] 2D drawing system in FlightGear 3.0 has now support for:
The fully scriptable [[Canvas]] 2D drawing system in FlightGear 3.0 has now support for:
* creating GUI windows (not just widgets, but also windows - which can be used for popup menus or menubars)
* creating GUI windows (not just widgets, but also windows - which can be used for popup menus or menubars)
* native copy/paste via 2 new [[Nasal]] extension functions, see [[ Howto:Clipboard access using Nasal]]
* native copy/paste via 2 new [[Nasal]] extension functions, see [[ Howto:Clipboard access using Nasal]]
* nested canvases
* nested canvases, where a canvas may contain images created by another canvas texture
* window stacking
* window stacking
* raster images
* raster images
* handling GUI events using osgGA
Support for nested canvases will make it possible to also load canvas textures into other canvases, so that you can, for example, easily load an instrument into a GUI dialog, or even use GUI widgets in MFD instruments, which is a feature based on real avionics, i.e. as used in modern airliners like the A320 or the 787.
Nested canvases also make it possible for people to easily implement GUI tools using the Canvas system, for example a GUI instrument or panel editor can be entirely implemented in scripting space now, without touching any C++ code. Similarly, GUI widgets could also be created in a WYSIWYG-fashion, too - so that even dialog editor or full GUI builders can be built using the Canvas system.
In addition, Tom has also implemented support for window stacking in 08/2012. Check out the demo video below, which demonstrates how "nested" canvases and window stacking works:
{{#ev:youtube|llVaasTEf44}}
Missing features, and features currently under development, are listed at [[Canvas Widgets#Missing_.2F_Todo|Missing Canvas Features]]




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