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-rw-r--r--gfx/layers/apz/src/IAPZHitTester.cpp78
1 files changed, 78 insertions, 0 deletions
diff --git a/gfx/layers/apz/src/IAPZHitTester.cpp b/gfx/layers/apz/src/IAPZHitTester.cpp
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+++ b/gfx/layers/apz/src/IAPZHitTester.cpp
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+/* -*- 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/. */
+
+#include "IAPZHitTester.h"
+#include "APZCTreeManager.h"
+#include "AsyncPanZoomController.h"
+
+namespace mozilla {
+namespace layers {
+
+IAPZHitTester::HitTestResult IAPZHitTester::CloneHitTestResult(
+ RecursiveMutexAutoLock& aProofOfTreeLock,
+ const IAPZHitTester::HitTestResult& aHitTestResult) const {
+ HitTestResult result;
+
+ result.mTargetApzc = aHitTestResult.mTargetApzc;
+ result.mHitResult = aHitTestResult.mHitResult;
+ result.mLayersId = aHitTestResult.mLayersId;
+ result.mFixedPosSides = aHitTestResult.mFixedPosSides;
+ result.mHitOverscrollGutter = aHitTestResult.mHitOverscrollGutter;
+
+ RefPtr<HitTestingTreeNode> scrollbarNode =
+ aHitTestResult.mScrollbarNode.Get(aProofOfTreeLock);
+ RefPtr<HitTestingTreeNode> node = aHitTestResult.mNode.Get(aProofOfTreeLock);
+
+ if (aHitTestResult.mScrollbarNode) {
+ InitializeHitTestingTreeNodeAutoLock(result.mScrollbarNode,
+ aProofOfTreeLock, scrollbarNode);
+ }
+ if (aHitTestResult.mNode) {
+ InitializeHitTestingTreeNodeAutoLock(result.mNode, aProofOfTreeLock, node);
+ }
+
+ return result;
+}
+
+LayersId IAPZHitTester::GetRootLayersId() const {
+ return mTreeManager->mRootLayersId;
+}
+
+HitTestingTreeNode* IAPZHitTester::GetRootNode() const {
+ mTreeManager->mTreeLock.AssertCurrentThreadIn();
+ return mTreeManager->mRootNode;
+}
+
+HitTestingTreeNode* IAPZHitTester::FindRootNodeForLayersId(
+ LayersId aLayersId) const {
+ return mTreeManager->FindRootNodeForLayersId(aLayersId);
+}
+
+AsyncPanZoomController* IAPZHitTester::FindRootApzcForLayersId(
+ LayersId aLayersId) const {
+ HitTestingTreeNode* resultNode = FindRootNodeForLayersId(aLayersId);
+ return resultNode ? resultNode->GetApzc() : nullptr;
+}
+
+already_AddRefed<HitTestingTreeNode> IAPZHitTester::GetTargetNode(
+ const ScrollableLayerGuid& aGuid,
+ ScrollableLayerGuid::Comparator aComparator) {
+ // Acquire the tree lock so that derived classes can call this from
+ // methods other than GetAPZCAtPoint().
+ RecursiveMutexAutoLock lock(mTreeManager->mTreeLock);
+ return mTreeManager->GetTargetNode(aGuid, aComparator);
+}
+
+void IAPZHitTester::InitializeHitTestingTreeNodeAutoLock(
+ HitTestingTreeNodeAutoLock& aAutoLock,
+ const RecursiveMutexAutoLock& aProofOfTreeLock,
+ RefPtr<HitTestingTreeNode>& aNode) const {
+ aAutoLock.Initialize(aProofOfTreeLock, aNode.forget(),
+ mTreeManager->mTreeLock);
+}
+
+} // namespace layers
+} // namespace mozilla