From 50642f85ac547a3caee353affcb08872cac49456 Mon Sep 17 00:00:00 2001
From: Luke Wilde <lukew@serenityos.org>
Date: Sun, 19 Jun 2022 20:11:10 +0100
Subject: [PATCH] LibWeb/WebGL: Add WebGLRenderingContextBase.canvas

---
 .../Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp     | 5 +++++
 Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h  | 2 ++
 .../Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl     | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp
index da0d132571..aaf6ffe8cf 100644
--- a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp
+++ b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp
@@ -77,6 +77,11 @@ HTML::HTMLCanvasElement const& WebGLRenderingContextBase::canvas_element() const
     return ref_count_target();
 }
 
+NonnullRefPtr<HTML::HTMLCanvasElement> WebGLRenderingContextBase::canvas_for_binding() const
+{
+    return canvas_element();
+}
+
 void WebGLRenderingContextBase::needs_to_present()
 {
     m_should_present = true;
diff --git a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
index 5a5914b7cc..927d7af669 100644
--- a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
+++ b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.h
@@ -23,6 +23,8 @@ public:
 
     void present();
 
+    NonnullRefPtr<HTML::HTMLCanvasElement> canvas_for_binding() const;
+
     bool is_context_lost() const;
 
     Optional<Vector<String>> get_supported_extensions() const;
diff --git a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
index 7d49fac82f..4682342c5a 100644
--- a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
+++ b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContextBase.idl
@@ -1,3 +1,4 @@
+#import <HTML/HTMLCanvasElement.idl>
 #import <WebGL/Types.idl>
 
 dictionary WebGLContextAttributes {
@@ -18,6 +19,9 @@ interface mixin WebGLRenderingContextBase {
     //       IDL code generator. This also allows us to handle the return type ourselves instead of adding the complexity of the
     //       code generator working out the return type and returning the appropriate value to return on context loss.
 
+    // FIXME: The type should be (HTMLCanvasElement or OffscreenCanvas).
+    [ImplementedAs=canvas_for_binding] readonly attribute HTMLCanvasElement canvas;
+
     boolean isContextLost();
 
     sequence<DOMString>? getSupportedExtensions();