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-rw-r--r--gfx/layers/apz/testutil/APZTestData.cpp66
-rw-r--r--gfx/layers/apz/testutil/APZTestData.h168
2 files changed, 234 insertions, 0 deletions
diff --git a/gfx/layers/apz/testutil/APZTestData.cpp b/gfx/layers/apz/testutil/APZTestData.cpp
new file mode 100644
index 000000000..3c9440b64
--- /dev/null
+++ b/gfx/layers/apz/testutil/APZTestData.cpp
@@ -0,0 +1,66 @@
+/* -*- 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/. */
+
+#include "APZTestData.h"
+#include "mozilla/dom/APZTestDataBinding.h"
+#include "mozilla/dom/ToJSValue.h"
+#include "nsString.h"
+
+namespace mozilla {
+namespace layers {
+
+struct APZTestDataToJSConverter {
+ template <typename Key, typename Value, typename KeyValuePair>
+ static void ConvertMap(const std::map<Key, Value>& aFrom,
+ dom::Sequence<KeyValuePair>& aOutTo,
+ void (*aElementConverter)(const Key&, const Value&, KeyValuePair&)) {
+ for (auto it = aFrom.begin(); it != aFrom.end(); ++it) {
+ aOutTo.AppendElement(fallible);
+ aElementConverter(it->first, it->second, aOutTo.LastElement());
+ }
+ }
+
+ static void ConvertAPZTestData(const APZTestData& aFrom,
+ dom::APZTestData& aOutTo) {
+ ConvertMap(aFrom.mPaints, aOutTo.mPaints.Construct(), ConvertBucket);
+ ConvertMap(aFrom.mRepaintRequests, aOutTo.mRepaintRequests.Construct(), ConvertBucket);
+ }
+
+ static void ConvertBucket(const SequenceNumber& aKey,
+ const APZTestData::Bucket& aValue,
+ dom::APZBucket& aOutKeyValuePair) {
+ aOutKeyValuePair.mSequenceNumber.Construct() = aKey;
+ ConvertMap(aValue, aOutKeyValuePair.mScrollFrames.Construct(), ConvertScrollFrameData);
+ }
+
+ static void ConvertScrollFrameData(const APZTestData::ViewID& aKey,
+ const APZTestData::ScrollFrameData& aValue,
+ dom::ScrollFrameData& aOutKeyValuePair) {
+ aOutKeyValuePair.mScrollId.Construct() = aKey;
+ ConvertMap(aValue, aOutKeyValuePair.mEntries.Construct(), ConvertEntry);
+ }
+
+ static void ConvertEntry(const std::string& aKey,
+ const std::string& aValue,
+ dom::ScrollFrameDataEntry& aOutKeyValuePair) {
+ ConvertString(aKey, aOutKeyValuePair.mKey.Construct());
+ ConvertString(aValue, aOutKeyValuePair.mValue.Construct());
+ }
+
+ static void ConvertString(const std::string& aFrom, nsString& aOutTo) {
+ aOutTo = NS_ConvertUTF8toUTF16(aFrom.c_str(), aFrom.size());
+ }
+};
+
+bool
+APZTestData::ToJS(JS::MutableHandleValue aOutValue, JSContext* aContext) const
+{
+ dom::APZTestData result;
+ APZTestDataToJSConverter::ConvertAPZTestData(*this, result);
+ return dom::ToJSValue(aContext, result, aOutValue);
+}
+
+} // namespace layers
+} // namespace mozilla
diff --git a/gfx/layers/apz/testutil/APZTestData.h b/gfx/layers/apz/testutil/APZTestData.h
new file mode 100644
index 000000000..c0cc35b5a
--- /dev/null
+++ b/gfx/layers/apz/testutil/APZTestData.h
@@ -0,0 +1,168 @@
+/* -*- 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 mozilla_layers_APZTestData_h
+#define mozilla_layers_APZTestData_h
+
+#include <map>
+
+#include "FrameMetrics.h"
+#include "nsDebug.h" // for NS_WARNING
+#include "mozilla/Assertions.h" // for MOZ_ASSERT
+#include "mozilla/DebugOnly.h" // for DebugOnly
+#include "mozilla/ToString.h" // for ToString
+#include "ipc/IPCMessageUtils.h"
+#include "js/TypeDecls.h"
+
+namespace mozilla {
+namespace layers {
+
+typedef uint32_t SequenceNumber;
+
+/**
+ * This structure is used to store information logged by various gecko
+ * components for later examination by test code.
+ * It consists of a bucket for every paint (initiated on the client side),
+ * and every repaint request (initiated on the compositor side by
+ * AsyncPanZoomController::RequestContentRepait), which are identified by
+ * sequence numbers, and within that, a set of arbitrary string key/value
+ * pairs for every scrollable frame, identified by a scroll id.
+ * There are two instances of this data structure for every content thread:
+ * one on the client side and one of the compositor side.
+ */
+// TODO(botond):
+// - Improve warnings/asserts.
+// - Add ability to associate a repaint request triggered during a layers update
+// with the sequence number of the paint that caused the layers update.
+class APZTestData {
+ typedef FrameMetrics::ViewID ViewID;
+ friend struct IPC::ParamTraits<APZTestData>;
+ friend struct APZTestDataToJSConverter;
+public:
+ void StartNewPaint(SequenceNumber aSequenceNumber) {
+ // We should never get more than one paint with the same sequence number.
+ MOZ_ASSERT(mPaints.find(aSequenceNumber) == mPaints.end());
+ mPaints.insert(DataStore::value_type(aSequenceNumber, Bucket()));
+ }
+ void LogTestDataForPaint(SequenceNumber aSequenceNumber,
+ ViewID aScrollId,
+ const std::string& aKey,
+ const std::string& aValue) {
+ LogTestDataImpl(mPaints, aSequenceNumber, aScrollId, aKey, aValue);
+ }
+
+ void StartNewRepaintRequest(SequenceNumber aSequenceNumber) {
+ typedef std::pair<DataStore::iterator, bool> InsertResultT;
+ DebugOnly<InsertResultT> insertResult = mRepaintRequests.insert(DataStore::value_type(aSequenceNumber, Bucket()));
+ MOZ_ASSERT(((InsertResultT&)insertResult).second, "Already have a repaint request with this sequence number");
+ }
+ void LogTestDataForRepaintRequest(SequenceNumber aSequenceNumber,
+ ViewID aScrollId,
+ const std::string& aKey,
+ const std::string& aValue) {
+ LogTestDataImpl(mRepaintRequests, aSequenceNumber, aScrollId, aKey, aValue);
+ }
+
+ // Convert this object to a JS representation.
+ bool ToJS(JS::MutableHandleValue aOutValue, JSContext* aContext) const;
+
+ // Use dummy derived structures wrapping the tyepdefs to work around a type
+ // name length limit in MSVC.
+ typedef std::map<std::string, std::string> ScrollFrameDataBase;
+ struct ScrollFrameData : ScrollFrameDataBase {};
+ typedef std::map<ViewID, ScrollFrameData> BucketBase;
+ struct Bucket : BucketBase {};
+ typedef std::map<SequenceNumber, Bucket> DataStoreBase;
+ struct DataStore : DataStoreBase {};
+private:
+ DataStore mPaints;
+ DataStore mRepaintRequests;
+
+ void LogTestDataImpl(DataStore& aDataStore,
+ SequenceNumber aSequenceNumber,
+ ViewID aScrollId,
+ const std::string& aKey,
+ const std::string& aValue) {
+ auto bucketIterator = aDataStore.find(aSequenceNumber);
+ if (bucketIterator == aDataStore.end()) {
+ MOZ_ASSERT(false, "LogTestDataImpl called with nonexistent sequence number");
+ return;
+ }
+ Bucket& bucket = bucketIterator->second;
+ ScrollFrameData& scrollFrameData = bucket[aScrollId]; // create if doesn't exist
+ MOZ_ASSERT(scrollFrameData.find(aKey) == scrollFrameData.end()
+ || scrollFrameData[aKey] == aValue);
+ scrollFrameData.insert(ScrollFrameData::value_type(aKey, aValue));
+ }
+};
+
+// A helper class for logging data for a paint.
+class APZPaintLogHelper {
+public:
+ APZPaintLogHelper(APZTestData* aTestData, SequenceNumber aPaintSequenceNumber)
+ : mTestData(aTestData),
+ mPaintSequenceNumber(aPaintSequenceNumber)
+ {}
+
+ template <typename Value>
+ void LogTestData(FrameMetrics::ViewID aScrollId,
+ const std::string& aKey,
+ const Value& aValue) const {
+ if (mTestData) { // avoid stringifying if mTestData == nullptr
+ LogTestData(aScrollId, aKey, ToString(aValue));
+ }
+ }
+
+ void LogTestData(FrameMetrics::ViewID aScrollId,
+ const std::string& aKey,
+ const std::string& aValue) const {
+ if (mTestData) {
+ mTestData->LogTestDataForPaint(mPaintSequenceNumber, aScrollId, aKey, aValue);
+ }
+ }
+private:
+ APZTestData* mTestData;
+ SequenceNumber mPaintSequenceNumber;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+namespace IPC {
+
+template <>
+struct ParamTraits<mozilla::layers::APZTestData>
+{
+ typedef mozilla::layers::APZTestData paramType;
+
+ static void Write(Message* aMsg, const paramType& aParam)
+ {
+ WriteParam(aMsg, aParam.mPaints);
+ WriteParam(aMsg, aParam.mRepaintRequests);
+ }
+
+ static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
+ {
+ return (ReadParam(aMsg, aIter, &aResult->mPaints) &&
+ ReadParam(aMsg, aIter, &aResult->mRepaintRequests));
+ }
+};
+
+template <>
+struct ParamTraits<mozilla::layers::APZTestData::ScrollFrameData>
+ : ParamTraits<mozilla::layers::APZTestData::ScrollFrameDataBase> {};
+
+template <>
+struct ParamTraits<mozilla::layers::APZTestData::Bucket>
+ : ParamTraits<mozilla::layers::APZTestData::BucketBase> {};
+
+template <>
+struct ParamTraits<mozilla::layers::APZTestData::DataStore>
+ : ParamTraits<mozilla::layers::APZTestData::DataStoreBase> {};
+
+} // namespace IPC
+
+
+#endif /* mozilla_layers_APZTestData_h */
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