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webgl: Implement WebGLContextEvent and use it on context creation error

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spec: https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.15
This commit is contained in:
Emilio Cobos Álvarez 2015-10-03 21:09:54 +02:00
parent 217c7da413
commit 7030f09823
8 changed files with 146 additions and 2 deletions
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13
components/script/dom/webglrenderingcontext.rs
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@ -8,16 +8,18 @@ use canvas_traits::{WebGLFramebufferBindingRequest, WebGLShaderParameter};
use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::{WebGLRenderingContextMethods};
use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::{self, WebGLContextAttributes};
use dom::bindings::codegen::InheritTypes::NodeCast;
use dom::bindings::codegen::InheritTypes::{EventCast, EventTargetCast, NodeCast};
use dom::bindings::codegen::UnionTypes::ImageDataOrHTMLImageElementOrHTMLCanvasElementOrHTMLVideoElement;
use dom::bindings::conversions::ToJSValConvertible;
use dom::bindings::global::{GlobalField, GlobalRef};
use dom::bindings::js::{JS, LayoutJS, Root};
use dom::bindings::utils::{Reflector, reflect_dom_object};
use dom::event::{EventBubbles, EventCancelable};
use dom::htmlcanvaselement::HTMLCanvasElement;
use dom::htmlcanvaselement::utils as canvas_utils;
use dom::node::{NodeDamage, window_from_node};
use dom::webglbuffer::WebGLBuffer;
use dom::webglcontextevent::WebGLContextEvent;
use dom::webglframebuffer::WebGLFramebuffer;
use dom::webglprogram::WebGLProgram;
use dom::webglrenderbuffer::WebGLRenderbuffer;
@ -115,6 +117,15 @@ impl WebGLRenderingContext {
WebGLRenderingContextBinding::Wrap)),
Err(msg) => {
error!("Couldn't create WebGLRenderingContext: {}", msg);
let event = WebGLContextEvent::new(global, "webglcontextcreationerror".to_owned(),
EventBubbles::DoesNotBubble,
EventCancelable::Cancelable,
msg);
let event = EventCast::from_ref(event.r());
let target = EventTargetCast::from_ref(canvas);
event.fire(target);
None
}
}