OverscrollGlow for mainThread-{BLINK CHANGES}

Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 134 matching lines @@
         EXPECT_EQ(expected.x(), actual.x()); \
         EXPECT_EQ(expected.y(), actual.y()); \
     } while (false)
 
 #define EXPECT_FLOAT_POINT_EQ(expected, actual) \
     do { \
         EXPECT_FLOAT_EQ(expected.x(), actual.x()); \
         EXPECT_FLOAT_EQ(expected.y(), actual.y()); \
     } while (false)
 
+#define EXPECT_WEB_FLOAT_SIZE_EQ(expected, actual) \
+    do { \
+        EXPECT_FLOAT_EQ(expected.width, actual.width); \
+        EXPECT_FLOAT_EQ(expected.height, actual.height); \
+    } while (false)
+
 class WebFrameTest : public ::testing::Test {
 protected:
     WebFrameTest()
         : m_baseURL("http://internal.test/")
         , m_notBaseURL("http://external.test/")
         , m_chromeURL("chrome://")
     {
     }
 
     virtual ~WebFrameTest()
@@ skipping 7265 matching lines @@
     EXPECT_EQ(fourthFrame, parent->lastChild());
 
     EXPECT_EQ(parent, firstFrame->parent());
     EXPECT_EQ(parent, secondFrame->parent());
     EXPECT_EQ(parent, thirdFrame->parent());
     EXPECT_EQ(parent, fourthFrame->parent());
 
     view->close();
 }
 
+class OverscrollWebViewClient : public FrameTestHelpers::TestWebViewClient {
+public:
+    virtual void didOverscroll(const WebFloatSize& unusedDelta, const WebFloatSize& accumulatedRootOverScroll, const WebFloatPoint& position, const WebFloatSize& velocity) override
+    {
+        m_unusedDelta = unusedDelta;
+        m_accumulatedRootOverScroll = accumulatedRootOverScroll;
+    }
+
+    WebFloatSize m_unusedDelta;
+    WebFloatSize m_accumulatedRootOverScroll;
+};
+
+class WebFrameOverscrollTest : public WebFrameTest {
+protected:
+    WebGestureEvent generateEvent(WebInputEvent::Type type, int deltaX = 0, int deltaY = 0)
+    {
+        WebGestureEvent event;
+        event.type = type;
+        event.x = 100;
+        event.y = 100;
+        if (type == WebInputEvent::GestureScrollUpdate) {
+            event.data.scrollUpdate.deltaX = deltaX;
+            event.data.scrollUpdate.deltaY = deltaY;
+        }
+        return event;
+    }
+
+    void ScrollBegin(FrameTestHelpers::WebViewHelper* webViewHelper)
+    {
+        webViewHelper->webViewImpl()->handleInputEvent(generateEvent(WebInputEvent::GestureScrollBegin));
+    }
+
+    void ScrollUpdate(FrameTestHelpers::WebViewHelper* webViewHelper, float deltaX, float deltaY)
+    {
+        webViewHelper->webViewImpl()->handleInputEvent(generateEvent(WebInputEvent::GestureScrollUpdate, deltaX, deltaY));
+    }
+
+    void ScrollEnd(FrameTestHelpers::WebViewHelper* webViewHelper)
+    {
+        webViewHelper->webViewImpl()->handleInputEvent(generateEvent(WebInputEvent::GestureScrollEnd));
+    }
+};
+
+TEST_F(WebFrameOverscrollTest, AccumulatedRootOverscrollAndUnsedDeltaValuesOnOverscroll)
+{
+    OverscrollWebViewClient client;
+    registerMockedHttpURLLoad("overscroll/overscroll.html");
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(m_baseURL + "overscroll/overscroll.html", true, 0, &client, configureAndroid);
+    webViewImpl->layout();
+
+    // Calculation of accumulatedRootOverscroll and unusedDelta on multiple scrollUpdate.
+    ScrollBegin(&webViewHelper);
+    ScrollUpdate(&webViewHelper, -400, -400);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 0, -13);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 13), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 13), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, -20, -13);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 13), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 26), client.m_accumulatedRootOverScroll);
+
+    // Overscroll is not reported for the below scroll gestures, due to which OverscrollWebViewClient
+    // retains last UnusedDelta and AccumulatedRootOverscroll values.
+    ScrollUpdate(&webViewHelper, 0, 1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 13), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 26), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 1, 0);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 13), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 26), client.m_accumulatedRootOverScroll);
+
+    ScrollEnd(&webViewHelper);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 13), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(20, 26), client.m_accumulatedRootOverScroll);
+}
+
+TEST_F(WebFrameOverscrollTest, AccumulatedOverscrollAndUnusedDeltaValuesOnDifferentAxesOverscroll)
+{
+    OverscrollWebViewClient client;
+    registerMockedHttpURLLoad("overscroll/div-overscroll.html");
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(m_baseURL + "overscroll/div-overscroll.html", true, 0, &client, configureAndroid);
+    webViewImpl->layout();
+
+    ScrollBegin(&webViewHelper);
+
+    // Scroll the Div to the end.
+    ScrollUpdate(&webViewHelper, 0, -316);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    // Now On Scrolling DIV, scroll is bubbled and root layer is over-scrolled.
+    ScrollUpdate(&webViewHelper, 0, -50);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_accumulatedRootOverScroll);
+
+    // Overscroll is not reported, so client retains last UnusedDelta and AccumulatedRootOverscroll values.
+    ScrollUpdate(&webViewHelper, 0, 1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 0, -50);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_accumulatedRootOverScroll);
+
+    // Now On Scrolling DIV, scroll is bubbled and root layer is over-scrolled.
+    ScrollUpdate(&webViewHelper, 0, -100);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 100), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 100), client.m_accumulatedRootOverScroll);
+
+    // Page scrolls vertically, but over-scrolls horizontally.
+    ScrollUpdate(&webViewHelper, 100, 50);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-100, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-100, 0), client.m_accumulatedRootOverScroll);
+
+    // Scrolling up, Overscroll is not reported, so client retains last UnusedDelta and AccumulatedRootOverscroll values.
+    ScrollUpdate(&webViewHelper, 0, -50);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-100, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-100, 0), client.m_accumulatedRootOverScroll);
+
+    // Page scrolls horizontally, but over-scrolls vertically.
+    ScrollUpdate(&webViewHelper, -100, -100);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 100), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 100), client.m_accumulatedRootOverScroll);
+}
+
+TEST_F(WebFrameOverscrollTest, RootLayerOverscrolledOnInnerDivOverScroll)
+{
+    OverscrollWebViewClient client;
+    registerMockedHttpURLLoad("overscroll/div-overscroll.html");
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(m_baseURL + "overscroll/div-overscroll.html", true, 0, &client, configureAndroid);
+    webViewImpl->layout();
+
+    ScrollBegin(&webViewHelper);
+
+    // Scroll the Div to the end.
+    ScrollUpdate(&webViewHelper, 0, -316);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    // Now On Scrolling DIV, scroll is bubbled and root layer is over-scrolled.
+    ScrollUpdate(&webViewHelper, 0, -50);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_accumulatedRootOverScroll);
+}
+
+TEST_F(WebFrameOverscrollTest, RootLayerOverscrolledOnInnerIFrameOverScroll)
+{
+    OverscrollWebViewClient client;
+    registerMockedHttpURLLoad("overscroll/iframe-overscroll.html");
+    registerMockedHttpURLLoad("overscroll/scrollable-iframe.html");
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(m_baseURL + "overscroll/iframe-overscroll.html", true, 0, &client, configureAndroid);
+    webViewImpl->layout();
+
+    ScrollBegin(&webViewHelper);
+
+    // Scroll the IFrame to the end.
+    ScrollUpdate(&webViewHelper, 0, -320);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    // Now On Scrolling IFrame, scroll is bubbled and root layer is over-scrolled.
+    ScrollUpdate(&webViewHelper, 0, -50);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 50), client.m_accumulatedRootOverScroll);
+}
+
+TEST_F(WebFrameOverscrollTest, NoOverscrollOnNonScrollableaxes)
+{
+    OverscrollWebViewClient client;
+    registerMockedHttpURLLoad("overscroll/no-overscroll-on-nonscrollable-axes.html");
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(m_baseURL + "overscroll/no-overscroll-on-nonscrollable-axes.html", true, 0, &client, configureAndroid);
+    webViewImpl->layout();
+
+    // Overscroll is not reported in all the directions.
+    ScrollBegin(&webViewHelper);
+    ScrollUpdate(&webViewHelper, 0, -1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 0, 1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 1, 0);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, -1, 0);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 1, 1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, -1, 1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 1, -1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, -1, -1);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+
+    ScrollEnd(&webViewHelper);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, 0), client.m_accumulatedRootOverScroll);
+}
+
+TEST_F(WebFrameOverscrollTest, ScaledPageRootLayerOverscrolled)
+{
+    OverscrollWebViewClient client;
+    registerMockedHttpURLLoad("overscroll/overscroll.html");
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(m_baseURL + "overscroll/overscroll.html", true, 0, &client, configureAndroid);
+    webViewImpl->setPageScaleFactor(3.f);
+    webViewImpl->layout();
+
+    // Calculation of accumulatedRootOverscroll and unusedDelta on scaled page.
+    ScrollBegin(&webViewHelper);
+    ScrollUpdate(&webViewHelper, 0, 30);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, -10), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, -10), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 0, 30);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, -10), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(0, -20), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 30, 30);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-10, -10), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-10, -30), client.m_accumulatedRootOverScroll);
+
+    ScrollUpdate(&webViewHelper, 30, 0);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-10, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-20, -30), client.m_accumulatedRootOverScroll);
+
+    // Overscroll is not reported, so client retains last UnusedDelta and AccumulatedRootOverscroll values.
+    ScrollEnd(&webViewHelper);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-10, 0), client.m_unusedDelta);
+    EXPECT_WEB_FLOAT_SIZE_EQ(WebFloatSize(-20, -30), client.m_accumulatedRootOverScroll);
+}
+
 } // namespace blink