mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 20:32:44 +00:00
68 lines
3.3 KiB
C++
68 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibWeb/Bindings/Intrinsics.h>
|
|
#include <LibWeb/DOM/Document.h>
|
|
#include <LibWeb/HTML/HTMLCanvasElement.h>
|
|
#include <LibWeb/WebGL/EventNames.h>
|
|
#include <LibWeb/WebGL/WebGLContextEvent.h>
|
|
#include <LibWeb/WebGL/WebGLRenderingContext.h>
|
|
|
|
namespace Web::WebGL {
|
|
|
|
JS_DEFINE_ALLOCATOR(WebGLRenderingContext);
|
|
|
|
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#fire-a-webgl-context-event
|
|
static void fire_webgl_context_event(HTML::HTMLCanvasElement& canvas_element, FlyString const& type)
|
|
{
|
|
// To fire a WebGL context event named e means that an event using the WebGLContextEvent interface, with its type attribute [DOM4] initialized to e, its cancelable attribute initialized to true, and its isTrusted attribute [DOM4] initialized to true, is to be dispatched at the given object.
|
|
// FIXME: Consider setting a status message.
|
|
auto event = WebGLContextEvent::create(canvas_element.realm(), type, WebGLContextEventInit {});
|
|
event->set_is_trusted(true);
|
|
event->set_cancelable(true);
|
|
canvas_element.dispatch_event(*event);
|
|
}
|
|
|
|
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#fire-a-webgl-context-creation-error
|
|
static void fire_webgl_context_creation_error(HTML::HTMLCanvasElement& canvas_element)
|
|
{
|
|
// 1. Fire a WebGL context event named "webglcontextcreationerror" at canvas, optionally with its statusMessage attribute set to a platform dependent string about the nature of the failure.
|
|
fire_webgl_context_event(canvas_element, EventNames::webglcontextcreationerror);
|
|
}
|
|
|
|
JS::ThrowCompletionOr<JS::GCPtr<WebGLRenderingContext>> WebGLRenderingContext::create(JS::Realm& realm, HTML::HTMLCanvasElement& canvas_element, JS::Value options)
|
|
{
|
|
// We should be coming here from getContext being called on a wrapped <canvas> element.
|
|
auto context_attributes = TRY(convert_value_to_context_attributes_dictionary(canvas_element.vm(), options));
|
|
|
|
bool created_bitmap = canvas_element.create_bitmap(/* minimum_width= */ 1, /* minimum_height= */ 1);
|
|
if (!created_bitmap) {
|
|
fire_webgl_context_creation_error(canvas_element);
|
|
return JS::GCPtr<WebGLRenderingContext> { nullptr };
|
|
}
|
|
|
|
auto context_or_error = GL::create_context(*canvas_element.bitmap());
|
|
if (context_or_error.is_error()) {
|
|
fire_webgl_context_creation_error(canvas_element);
|
|
return JS::GCPtr<WebGLRenderingContext> { nullptr };
|
|
}
|
|
return realm.heap().allocate<WebGLRenderingContext>(realm, realm, canvas_element, context_or_error.release_value(), context_attributes, context_attributes);
|
|
}
|
|
|
|
WebGLRenderingContext::WebGLRenderingContext(JS::Realm& realm, HTML::HTMLCanvasElement& canvas_element, NonnullOwnPtr<GL::GLContext> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters)
|
|
: WebGLRenderingContextBase(realm, canvas_element, move(context), move(context_creation_parameters), move(actual_context_parameters))
|
|
{
|
|
}
|
|
|
|
WebGLRenderingContext::~WebGLRenderingContext() = default;
|
|
|
|
void WebGLRenderingContext::initialize(JS::Realm& realm)
|
|
{
|
|
Base::initialize(realm);
|
|
set_prototype(&Bindings::ensure_web_prototype<Bindings::WebGLRenderingContextPrototype>(realm, "WebGLRenderingContext"_fly_string));
|
|
}
|
|
|
|
}
|