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>
---
 gfx/layers/UpdateImageHelper.h | 82 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 gfx/layers/UpdateImageHelper.h

(limited to 'gfx/layers/UpdateImageHelper.h')

diff --git a/gfx/layers/UpdateImageHelper.h b/gfx/layers/UpdateImageHelper.h
new file mode 100644
index 0000000000..57ac237efe
--- /dev/null
+++ b/gfx/layers/UpdateImageHelper.h
@@ -0,0 +1,82 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 GFX_UPDATEIMAGEHELPER_H
+#define GFX_UPDATEIMAGEHELPER_H
+
+#include "mozilla/layers/CompositorTypes.h"
+#include "mozilla/layers/ImageClient.h"
+#include "mozilla/layers/TextureClient.h"
+#include "mozilla/layers/TextureClientRecycleAllocator.h"
+#include "mozilla/layers/TextureWrapperImage.h"
+#include "mozilla/gfx/Types.h"
+
+namespace mozilla {
+namespace layers {
+
+class UpdateImageHelper {
+ public:
+  UpdateImageHelper(ImageContainer* aImageContainer, ImageClient* aImageClient,
+                    gfx::IntSize aImageSize, gfx::SurfaceFormat aFormat)
+      : mImageContainer(aImageContainer),
+        mImageClient(aImageClient),
+        mImageSize(aImageSize),
+        mIsLocked(false) {
+    mTexture = mImageClient->GetTextureClientRecycler()->CreateOrRecycle(
+        aFormat, mImageSize, BackendSelector::Content, TextureFlags::DEFAULT);
+    if (!mTexture) {
+      return;
+    }
+
+    mIsLocked = mTexture->Lock(OpenMode::OPEN_WRITE_ONLY);
+    if (!mIsLocked) {
+      return;
+    }
+  }
+
+  ~UpdateImageHelper() {
+    if (mIsLocked) {
+      mTexture->Unlock();
+      mIsLocked = false;
+    }
+  }
+
+  already_AddRefed<gfx::DrawTarget> GetDrawTarget() {
+    RefPtr<gfx::DrawTarget> target;
+    if (mTexture) {
+      target = mTexture->BorrowDrawTarget();
+    }
+    return target.forget();
+  }
+
+  bool UpdateImage() {
+    if (!mTexture) {
+      return false;
+    }
+
+    if (mIsLocked) {
+      mTexture->Unlock();
+      mIsLocked = false;
+    }
+
+    RefPtr<TextureWrapperImage> image = new TextureWrapperImage(
+        mTexture, gfx::IntRect(gfx::IntPoint(0, 0), mImageSize));
+    mImageContainer->SetCurrentImageInTransaction(image);
+    return mImageClient->UpdateImage(mImageContainer);
+  }
+
+ private:
+  RefPtr<ImageContainer> mImageContainer;
+  RefPtr<ImageClient> mImageClient;
+  gfx::IntSize mImageSize;
+  RefPtr<TextureClient> mTexture;
+  bool mIsLocked;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif  // GFX_UPDATEIMAGEHELPER_H
-- 
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