LibAccelGfx+WebContent: Introduce Canvas that represents framebuffer

Userland/Libraries/LibAccelGfx/Canvas.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/RefCounted.h>
+#include <LibAccelGfx/GL.h>
+#include <LibGfx/Rect.h>
+
+namespace AccelGfx {
+
+class Canvas : public RefCounted<Canvas> {
+public:
+    static NonnullRefPtr<Canvas> create(Gfx::IntSize const& size)
+    {
+        return adopt_ref(*new Canvas(size));
+    }
+
+    Gfx::IntSize const& size() const { return m_size; }
+    GL::Framebuffer const& framebuffer() const { return m_framebuffer; }
+
+    void bind()
+    {
+        GL::bind_framebuffer(m_framebuffer);
+    }
+
+    virtual ~Canvas()
+    {
+        GL::delete_framebuffer(m_framebuffer);
+    }
+
+private:
+    Canvas(Gfx::IntSize const& size)
+        : m_size(size)
+        , m_framebuffer(GL::create_framebuffer(size))
+    {
+    }
+
+    Gfx::IntSize m_size;
+    GL::Framebuffer m_framebuffer;
+};
+
+}