166
edits
FlightGear Newsletter December 2012: Difference between revisions
Jump to navigation
Jump to search
FlightGear Newsletter December 2012 (view source)
Revision as of 22:39, 3 January 2013
, 3 January 2013Canvas event handling
(Canvas event handling) |
|||
| Line 29: | Line 29: | ||
=== Canvas System === | === Canvas System === | ||
<!--additions should also be added to:http://wiki.flightgear.org/Changelog_3.0.0#Some_of_the_major_changes_include: --> | <!--additions should also be added to:http://wiki.flightgear.org/Changelog_3.0.0#Some_of_the_major_changes_include: --> | ||
Recently the canvas system has received a basic event system similar to the DOM event handling used by JavaScript and HTML. This is an important step towards a fully canvas based GUI as it allows attaching mouse event handlers directly to any canvas element without a need to take care of any mouse intersection tests. Adding a mouse '''click''' handler to an element is now as simple as: | |||
<syntaxhighlight lang="php"> | |||
my_element.addEventListener("click", func print('my_element clicked')); | |||
</syntaxhighlight> | |||
There exist much more event types like '''dblclick''', '''drag''', '''wheel''', '''mouseover''' and '''mouseout'''. | |||
For all non-developers: this update is an important brick in building an improved GUI using the Canvas system :-) | |||
=== High Level Architecture === | === High Level Architecture === | ||