1 files changed, 70 insertions, 0 deletions
diff --git a/layout/base/MaskLayerImageCache.cpp b/layout/base/MaskLayerImageCache.cpp
new file mode 100644
index 000000000..e9039070c
--- /dev/null
+++ b/layout/base/MaskLayerImageCache.cpp
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 20; 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/. */
+
+#include "MaskLayerImageCache.h"
+#include "ImageContainer.h"
+
+using namespace mozilla::layers;
+
+namespace mozilla {
+
+MaskLayerImageCache::MaskLayerImageCache()
+{
+  MOZ_COUNT_CTOR(MaskLayerImageCache);
+}
+MaskLayerImageCache::~MaskLayerImageCache()
+{
+  MOZ_COUNT_DTOR(MaskLayerImageCache);
+}
+
+void
+MaskLayerImageCache::Sweep()
+{
+  for (auto iter = mMaskImageContainers.Iter(); !iter.Done(); iter.Next()) {
+    const MaskLayerImageCache::MaskLayerImageKey* key = iter.Get()->mKey;
+    if (key->HasZeroLayerCount()) {
+      iter.Remove();
+    }
+  }
+}
+
+ImageContainer*
+MaskLayerImageCache::FindImageFor(const MaskLayerImageKey** aKey)
+{
+  if (MaskLayerImageEntry* entry = mMaskImageContainers.GetEntry(**aKey)) {
+    *aKey = entry->mKey.get();
+    return entry->mContainer;
+  }
+
+  return nullptr;
+}
+
+void
+MaskLayerImageCache::PutImage(const MaskLayerImageKey* aKey, ImageContainer* aContainer)
+{
+  MaskLayerImageEntry* entry = mMaskImageContainers.PutEntry(*aKey);
+  entry->mContainer = aContainer;
+}
+
+MaskLayerImageCache::MaskLayerImageKey::MaskLayerImageKey()
+  : mRoundedClipRects()
+  , mLayerCount(0)
+{
+  MOZ_COUNT_CTOR(MaskLayerImageKey);
+}
+
+MaskLayerImageCache::MaskLayerImageKey::MaskLayerImageKey(const MaskLayerImageKey& aKey)
+  : mRoundedClipRects(aKey.mRoundedClipRects)
+  , mLayerCount(aKey.mLayerCount)
+{
+  MOZ_COUNT_CTOR(MaskLayerImageKey);
+}
+
+MaskLayerImageCache::MaskLayerImageKey::~MaskLayerImageKey()
+{
+  MOZ_COUNT_DTOR(MaskLayerImageKey);
+}
+
+} // namespace mozilla