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→Some of the major changes include:
The fully scriptable [[Canvas]] 2D drawing system in FlightGear 3.0 has now support for:
The Nasal API wrappers for the Canvas system have been committed to $FG_ROOT, so that people no longer need to manually load the required modules.
Furthermore, 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]]
* handling GUI events using osgGA
* 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 - which are based on the ARINC661 standard.
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 A380 or the 787 - which are based on the ARINC661 standard.
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.
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 a 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:
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: