compositor-worker: plumb element id and mutable properties

third_party/WebKit/Source/web/tests/CompositorWorkerTest.cpp

Index: third_party/WebKit/Source/web/tests/CompositorWorkerTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/CompositorWorkerTest.cpp b/third_party/WebKit/Source/web/tests/CompositorWorkerTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3d88a61b166cd9d95e9102756aa2f80b8775aaa6
--- /dev/null
+++ b/third_party/WebKit/Source/web/tests/CompositorWorkerTest.cpp
@@ -0,0 +1,229 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+
+#include "core/frame/FrameView.h"
+#include "core/layout/LayoutView.h"
+#include "core/layout/compositing/CompositedLayerMapping.h"
+#include "core/layout/compositing/PaintLayerCompositor.h"
+#include "core/page/Page.h"
+#include "platform/graphics/GraphicsLayer.h"
+#include "platform/testing/URLTestHelpers.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebLayer.h"
+#include "public/platform/WebLayerTreeView.h"
+#include "public/platform/WebMutableProperties.h"
+#include "public/platform/WebUnitTestSupport.h"
+#include "public/web/WebSettings.h"
+#include "public/web/WebViewClient.h"
+#include "web/WebLocalFrameImpl.h"
+#include "web/WebViewImpl.h"
+#include "web/tests/FrameTestHelpers.h"
+#include <gtest/gtest.h>
+
+namespace blink {
+
+class CompositorWorkerTest : public testing::Test {
+public:
+    CompositorWorkerTest()
+        : m_baseURL("http://www.test.com/")
+    {
+        RuntimeEnabledFeatures::setCompositorWorkerEnabled(true);
+        m_helper.initialize(true, 0, &m_mockWebViewClient, &configureSettings);
+        webViewImpl()->resize(IntSize(320, 240));
+
+        // OSX attaches main frame scrollbars to the VisualViewport so the VisualViewport layers need
+        // to be initialized.
+        webViewImpl()->updateAllLifecyclePhases();
+        webViewImpl()->setRootGraphicsLayer(
+            webViewImpl()->mainFrameImpl()->frame()->view()->layoutView()->compositor()->rootGraphicsLayer());
+    }
+
+    ~CompositorWorkerTest() override
+    {
+        Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
+    }
+
+    void navigateTo(const std::string& url)
+    {
+        FrameTestHelpers::loadFrame(webViewImpl()->mainFrame(), url);
+    }
+
+    void forceFullCompositingUpdate()
+    {
+        webViewImpl()->updateAllLifecyclePhases();
+    }
+
+    void registerMockedHttpURLLoad(const std::string& fileName)
+    {
+        URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8(fileName.c_str()));
+    }
+
+    WebLayer* getRootScrollLayer()
+    {
+        PaintLayerCompositor* compositor = frame()->contentLayoutObject()->compositor();
+        ASSERT(compositor);
+        ASSERT(compositor->scrollLayer());
+
+        WebLayer* webScrollLayer = compositor->scrollLayer()->platformLayer();
+        return webScrollLayer;
+    }
+
+    WebViewImpl* webViewImpl() const { return m_helper.webViewImpl(); }
+    LocalFrame* frame() const { return m_helper.webViewImpl()->mainFrameImpl()->frame(); }
+
+protected:
+    std::string m_baseURL;
+    FrameTestHelpers::TestWebViewClient m_mockWebViewClient;
+
+private:
+    static void configureSettings(WebSettings* settings)
+    {
+        settings->setJavaScriptEnabled(true);
+        settings->setAcceleratedCompositingEnabled(true);
+        settings->setPreferCompositingToLCDTextEnabled(true);
+    }
+
+    FrameTestHelpers::WebViewHelper m_helper;
+    FrameTestHelpers::UseMockScrollbarSettings m_mockScrollbarSettings;
+};
+
+static CompositedLayerMapping* mappingFromElement(Element* element)
+{
+    if (!element)
+        return nullptr;
+    LayoutObject* layoutObject = element->layoutObject();
+    if (!layoutObject || !layoutObject->isBoxModelObject())
+        return nullptr;
+    PaintLayer* layer = toLayoutBoxModelObject(layoutObject)->layer();
+    if (!layer)
+        return nullptr;
+    if (!layer->hasCompositedLayerMapping())
+        return nullptr;
+    return layer->compositedLayerMapping();
+}
+
+static WebLayer* webLayerFromGraphicsLayer(GraphicsLayer* graphicsLayer)
+{
+    if (!graphicsLayer)
+        return nullptr;
+    return graphicsLayer->platformLayer();
+}
+
+static WebLayer* scrollingWebLayerFromElement(Element* element)
+{
+    CompositedLayerMapping* compositedLayerMapping = mappingFromElement(element);
+    if (!compositedLayerMapping)
+        return nullptr;
+    return webLayerFromGraphicsLayer(compositedLayerMapping->scrollingContentsLayer());
+}
+
+static WebLayer* webLayerFromElement(Element* element)
+{
+    CompositedLayerMapping* compositedLayerMapping = mappingFromElement(element);
+    if (!compositedLayerMapping)
+        return nullptr;
+    return webLayerFromGraphicsLayer(compositedLayerMapping->mainGraphicsLayer());
+}
+
+TEST_F(CompositorWorkerTest, plumbingElementIdAndMutableProperties)
+{
+    registerMockedHttpURLLoad("compositor-proxy-basic.html");
+    navigateTo(m_baseURL + "compositor-proxy-basic.html");
+
+    forceFullCompositingUpdate();
+
+    Document* document = frame()->document();
+
+    Element* tallElement = document->getElementById("tall");
+    EXPECT_FALSE(tallElement->layoutObject()->style()->hasWillChangeTransformHint());
+    WebLayer* tallLayer = webLayerFromElement(tallElement);
+    EXPECT_TRUE(!tallLayer);
+
+    Element* proxiedElement = document->getElementById("proxied");
+    EXPECT_TRUE(proxiedElement->layoutObject()->style()->hasWillChangeTransformHint());
+    WebLayer* proxiedLayer = webLayerFromElement(proxiedElement);
+    EXPECT_TRUE(proxiedLayer->mutableProperties() & WebMutablePropertyTransform);
+    EXPECT_NE(0UL, proxiedLayer->elementId());
+
+    Element* scrollElement = document->getElementById("proxied-scroller");
+    EXPECT_TRUE(scrollElement->layoutObject()->style()->willChangeScrollPosition());
+    WebLayer* scrollLayer = scrollingWebLayerFromElement(scrollElement);
+    EXPECT_TRUE(scrollLayer->mutableProperties() & (WebMutablePropertyScrollLeft | WebMutablePropertyScrollTop));
+    EXPECT_NE(0UL, scrollLayer->elementId());
+
+    EXPECT_TRUE(document->scrollingElement()->layoutObject()->style()->willChangeScrollPosition());
+    WebLayer* rootScrollLayer = getRootScrollLayer();
+    EXPECT_TRUE(rootScrollLayer->mutableProperties() & (WebMutablePropertyScrollLeft | WebMutablePropertyScrollTop));
+    EXPECT_NE(0UL, rootScrollLayer->elementId());
+}
+
+TEST_F(CompositorWorkerTest, noProxies)
+{
+    // This case is identical to compositor-proxy-basic, but no proxies have
+    // actually been created.
+    registerMockedHttpURLLoad("compositor-proxy-plumbing-no-proxies.html");
+    navigateTo(m_baseURL + "compositor-proxy-plumbing-no-proxies.html");
+
+    forceFullCompositingUpdate();
+
+    Document* document = frame()->document();
+
+    Element* tallElement = document->getElementById("tall");
+    EXPECT_FALSE(tallElement->layoutObject()->style()->hasWillChangeTransformHint());
+    WebLayer* tallLayer = webLayerFromElement(tallElement);
+    EXPECT_TRUE(!tallLayer);
+
+    Element* proxiedElement = document->getElementById("proxied");
+    EXPECT_FALSE(proxiedElement->layoutObject()->style()->hasWillChangeTransformHint());
+    WebLayer* proxiedLayer = webLayerFromElement(proxiedElement);
+    EXPECT_TRUE(!proxiedLayer);
+
+    Element* scrollElement = document->getElementById("proxied-scroller");
+    EXPECT_FALSE(scrollElement->layoutObject()->style()->willChangeScrollPosition());
+    WebLayer* scrollLayer = scrollingWebLayerFromElement(scrollElement);
+    EXPECT_FALSE(scrollLayer->mutableProperties() & (WebMutablePropertyScrollLeft | WebMutablePropertyScrollTop));
+    EXPECT_EQ(0UL, scrollLayer->elementId());
+
+    EXPECT_FALSE(document->scrollingElement()->layoutObject()->style()->willChangeScrollPosition());
+    WebLayer* rootScrollLayer = getRootScrollLayer();
+    EXPECT_FALSE(rootScrollLayer->mutableProperties() & (WebMutablePropertyScrollLeft | WebMutablePropertyScrollTop));
+    EXPECT_EQ(0UL, rootScrollLayer->elementId());
+}
+
+TEST_F(CompositorWorkerTest, disconnectedProxies)
+{
+    // This case is identical to compositor-proxy-basic, but the proxies are
+    // disconnected (the result should be the same as compositor-proxy-plumbing-no-proxies).
+    registerMockedHttpURLLoad("compositor-proxy-basic-disconnected.html");
+    navigateTo(m_baseURL + "compositor-proxy-basic-disconnected.html");
+
+    forceFullCompositingUpdate();
+
+    Document* document = frame()->document();
+
+    Element* tallElement = document->getElementById("tall");
+    EXPECT_FALSE(tallElement->layoutObject()->style()->hasWillChangeTransformHint());
+    WebLayer* tallLayer = webLayerFromElement(tallElement);
+    EXPECT_TRUE(!tallLayer);
+
+    Element* proxiedElement = document->getElementById("proxied");
+    EXPECT_FALSE(proxiedElement->layoutObject()->style()->hasWillChangeTransformHint());
+    WebLayer* proxiedLayer = webLayerFromElement(proxiedElement);
+    EXPECT_TRUE(!proxiedLayer);
+
+    Element* scrollElement = document->getElementById("proxied-scroller");
+    EXPECT_FALSE(scrollElement->layoutObject()->style()->willChangeScrollPosition());
+    WebLayer* scrollLayer = scrollingWebLayerFromElement(scrollElement);
+    EXPECT_FALSE(scrollLayer->mutableProperties() & (WebMutablePropertyScrollLeft | WebMutablePropertyScrollTop));
+    EXPECT_EQ(0UL, scrollLayer->elementId());
+
+    EXPECT_FALSE(document->scrollingElement()->layoutObject()->style()->willChangeScrollPosition());
+    WebLayer* rootScrollLayer = getRootScrollLayer();
+    EXPECT_FALSE(rootScrollLayer->mutableProperties() & (WebMutablePropertyScrollLeft | WebMutablePropertyScrollTop));
+    EXPECT_EQ(0UL, rootScrollLayer->elementId());
+}
+
+} // namespace blink