From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dom/canvas/CanvasImageCache.h | 62 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 dom/canvas/CanvasImageCache.h

(limited to 'dom/canvas/CanvasImageCache.h')

diff --git a/dom/canvas/CanvasImageCache.h b/dom/canvas/CanvasImageCache.h
new file mode 100644
index 0000000000..58486c5a8d
--- /dev/null
+++ b/dom/canvas/CanvasImageCache.h
@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef CANVASIMAGECACHE_H_
+#define CANVASIMAGECACHE_H_
+
+#include "mozilla/RefPtr.h"
+#include "nsSize.h"
+
+namespace mozilla {
+namespace dom {
+class Element;
+class HTMLCanvasElement;
+}  // namespace dom
+namespace gfx {
+class DrawTarget;
+class SourceSurface;
+}  // namespace gfx
+}  // namespace mozilla
+class imgIContainer;
+
+namespace mozilla {
+
+class CanvasImageCache {
+  using SourceSurface = mozilla::gfx::SourceSurface;
+
+ public:
+  /**
+   * Notify that image element aImage was drawn to aCanvas element
+   * using the first frame of aRequest's image. The data for the surface is
+   * in aSurface, and the image size is in aSize. aIntrinsicSize is the size
+   * the surface is intended to be rendered at.
+   */
+  static void NotifyDrawImage(dom::Element* aImage,
+                              dom::HTMLCanvasElement* aCanvas,
+                              gfx::DrawTarget* aTarget, SourceSurface* aSource,
+                              const gfx::IntSize& aSize,
+                              const gfx::IntSize& aIntrinsicSize);
+
+  /**
+   * Check whether aImage has recently been drawn any canvas. If we return
+   * a non-null surface, then the same image was recently drawn into a canvas.
+   */
+  static SourceSurface* LookupAllCanvas(dom::Element* aImage,
+                                        gfx::DrawTarget* aTarget);
+
+  /**
+   * Like the top above, but restricts the lookup to only aCanvas. This is
+   * required for CORS security.
+   */
+  static SourceSurface* LookupCanvas(dom::Element* aImage,
+                                     dom::HTMLCanvasElement* aCanvas,
+                                     gfx::DrawTarget* aTarget,
+                                     gfx::IntSize* aSizeOut,
+                                     gfx::IntSize* aIntrinsicSizeOut);
+};
+
+}  // namespace mozilla
+
+#endif /* CANVASIMAGECACHE_H_ */
-- 
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