Merge "Account for parent scroll position" into nyc-dev am: 38735b0
am: 1515fb7

* commit '1515fb7a10b9def116b1471b906d7bc807ecec7b':
  Account for parent scroll position
diff --git a/tools/layoutlib/bridge/src/android/view/BridgeInflater.java b/tools/layoutlib/bridge/src/android/view/BridgeInflater.java
index 723e827..bdddfd8 100644
--- a/tools/layoutlib/bridge/src/android/view/BridgeInflater.java
+++ b/tools/layoutlib/bridge/src/android/view/BridgeInflater.java
@@ -265,12 +265,15 @@
             if (viewKey != null) {
                 bc.addViewKey(view, viewKey);
             }
-            String scrollPos = attrs.getAttributeValue(BridgeConstants.NS_RESOURCES, "scrollY");
-            if (scrollPos != null) {
-                if (scrollPos.endsWith("px")) {
-                    int value = Integer.parseInt(scrollPos.substring(0, scrollPos.length() - 2));
-                    bc.setScrollYPos(view, value);
-                }
+            String scrollPosX = attrs.getAttributeValue(BridgeConstants.NS_RESOURCES, "scrollX");
+            if (scrollPosX != null && scrollPosX.endsWith("px")) {
+                int value = Integer.parseInt(scrollPosX.substring(0, scrollPosX.length() - 2));
+                bc.setScrollXPos(view, value);
+            }
+            String scrollPosY = attrs.getAttributeValue(BridgeConstants.NS_RESOURCES, "scrollY");
+            if (scrollPosY != null && scrollPosY.endsWith("px")) {
+                int value = Integer.parseInt(scrollPosY.substring(0, scrollPosY.length() - 2));
+                bc.setScrollYPos(view, value);
             }
             if (ReflectionUtils.isInstanceOf(view, RecyclerViewUtil.CN_RECYCLER_VIEW)) {
                 Integer resourceId = null;
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContext.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContext.java
index b3f1ee1..4161307 100644
--- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContext.java
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeContext.java
@@ -127,7 +127,8 @@
     private final LayoutlibCallback mLayoutlibCallback;
     private final WindowManager mWindowManager;
     private final DisplayManager mDisplayManager;
-    private final HashMap<View, Integer> mScrollYPos = new HashMap<View, Integer>();
+    private final HashMap<View, Integer> mScrollYPos = new HashMap<>();
+    private final HashMap<View, Integer> mScrollXPos = new HashMap<>();
 
     private Resources.Theme mTheme;
 
@@ -1837,6 +1838,15 @@
         return pos != null ? pos : 0;
     }
 
+    public void setScrollXPos(@NonNull View view, int scrollPos) {
+        mScrollXPos.put(view, scrollPos);
+    }
+
+    public int getScrollXPos(@NonNull View view) {
+        Integer pos = mScrollXPos.get(view);
+        return pos != null ? pos : 0;
+    }
+
     @Override
     public Context createDeviceProtectedStorageContext() {
         // pass
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/RenderSessionImpl.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/RenderSessionImpl.java
index 53f1912..016825a 100644
--- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/RenderSessionImpl.java
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/RenderSessionImpl.java
@@ -1057,25 +1057,30 @@
     }
 
     /**
-     * Set the vertical scroll position on all the components with the "scrollY" attribute. If the
-     * component supports nested scrolling attempt that first, then use the unconsumed scroll part
-     * to scroll the content in the component.
+     * Set the scroll position on all the components with the "scrollX" and "scrollY" attribute. If
+     * the component supports nested scrolling attempt that first, then use the unconsumed scroll
+     * part to scroll the content in the component.
      */
     private void handleScrolling(View view) {
         BridgeContext context = getContext();
-        int scrollPos = context.getScrollYPos(view);
-        if (scrollPos != 0) {
+        int scrollPosX = context.getScrollXPos(view);
+        int scrollPosY = context.getScrollYPos(view);
+        if (scrollPosX != 0 || scrollPosY != 0) {
             if (view.isNestedScrollingEnabled()) {
                 int[] consumed = new int[2];
-                if (view.startNestedScroll(DesignLibUtil.SCROLL_AXIS_VERTICAL)) {
-                    view.dispatchNestedPreScroll(0, scrollPos, consumed, null);
-                    view.dispatchNestedScroll(consumed[0], consumed[1], 0, scrollPos, null);
+                int axis = scrollPosX != 0 ? View.SCROLL_AXIS_HORIZONTAL : 0;
+                axis |= scrollPosY != 0 ? View.SCROLL_AXIS_VERTICAL : 0;
+                if (view.startNestedScroll(axis)) {
+                    view.dispatchNestedPreScroll(scrollPosX, scrollPosY, consumed, null);
+                    view.dispatchNestedScroll(consumed[0], consumed[1], scrollPosX, scrollPosY,
+                            null);
                     view.stopNestedScroll();
-                    scrollPos -= consumed[1];
+                    scrollPosX -= consumed[0];
+                    scrollPosY -= consumed[1];
                 }
             }
-            if (scrollPos != 0) {
-                view.scrollBy(0, scrollPos);
+            if (scrollPosX != 0 || scrollPosY != 0) {
+                view.scrollBy(scrollPosX, scrollPosY);
             }
         }
 
@@ -1276,14 +1281,20 @@
             return null;
         }
 
+        ViewParent parent = view.getParent();
         ViewInfo result;
         if (isContentFrame) {
+            // Account for parent scroll values when calculating the bounding box
+            int scrollX = parent != null ? ((View)parent).getScrollX() : 0;
+            int scrollY = parent != null ? ((View)parent).getScrollY() : 0;
+
             // The view is part of the layout added by the user. Hence,
             // the ViewCookie may be obtained only through the Context.
             result = new ViewInfo(view.getClass().getName(),
                     getContext().getViewKey(view),
-                    view.getLeft(), view.getTop() + offset, view.getRight(),
-                    view.getBottom() + offset, view, view.getLayoutParams());
+                    -scrollX + view.getLeft(), -scrollY + view.getTop() + offset,
+                    -scrollX + view.getRight(), -scrollY + view.getBottom() + offset,
+                    view, view.getLayoutParams());
         } else {
             // We are part of the system decor.
             SystemViewInfo r = new SystemViewInfo(view.getClass().getName(),
@@ -1311,7 +1322,6 @@
                     // its parent is of type ActionMenuView. We can also check if the view is
                     // instanceof ActionMenuItemView but that will fail for menus using
                     // actionProviderClass.
-                    ViewParent parent = view.getParent();
                     while (parent != mViewRoot && parent instanceof ViewGroup) {
                         if (parent instanceof ActionMenuView) {
                             r.setViewType(ViewType.ACTION_BAR_MENU);
diff --git a/tools/layoutlib/bridge/tests/res/testApp/MyApplication/golden/scrolled.png b/tools/layoutlib/bridge/tests/res/testApp/MyApplication/golden/scrolled.png
new file mode 100644
index 0000000..87bd502
--- /dev/null
+++ b/tools/layoutlib/bridge/tests/res/testApp/MyApplication/golden/scrolled.png
Binary files differ
diff --git a/tools/layoutlib/bridge/tests/res/testApp/MyApplication/src/main/res/layout/scrolled.xml b/tools/layoutlib/bridge/tests/res/testApp/MyApplication/src/main/res/layout/scrolled.xml
new file mode 100644
index 0000000..a5ebc2e
--- /dev/null
+++ b/tools/layoutlib/bridge/tests/res/testApp/MyApplication/src/main/res/layout/scrolled.xml
@@ -0,0 +1,57 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:orientation="vertical"
+              android:scrollX="10px"
+              android:scrollY="30px">
+    <LinearLayout
+        android:layout_width="60dp"
+        android:layout_height="60dp"
+        android:background="#FF0000" />
+    <LinearLayout
+        android:layout_width="60dp"
+        android:layout_height="30dp"
+        android:background="#00FF00" />
+    <LinearLayout
+        android:layout_width="60dp"
+        android:layout_height="60dp"
+        android:background="#0000FF" />
+    <LinearLayout
+        android:layout_width="60dp"
+        android:layout_height="30dp"
+        android:background="#FF00FF" />
+    <LinearLayout
+        android:layout_width="60dp"
+        android:layout_height="60dp"
+        android:background="#00FFFF" />
+
+    <LinearLayout
+        android:layout_width="200dp"
+        android:layout_height="400dp"
+        android:orientation="vertical"
+        android:scrollX="-30px"
+        android:scrollY="150px">
+        <LinearLayout
+            android:layout_width="fill_parent"
+            android:layout_height="60dp"
+            android:background="#FF0000" />
+        <LinearLayout
+            android:layout_width="fill_parent"
+            android:layout_height="30dp"
+            android:background="#00FF00" />
+        <LinearLayout
+            android:layout_width="fill_parent"
+            android:layout_height="60dp"
+            android:background="#0000FF" />
+        <LinearLayout
+            android:layout_width="fill_parent"
+            android:layout_height="30dp"
+            android:background="#FF00FF" />
+        <LinearLayout
+            android:layout_width="fill_parent"
+            android:layout_height="60dp"
+            android:background="#00FFFF" />
+    </LinearLayout>
+
+
+</LinearLayout>
diff --git a/tools/layoutlib/bridge/tests/src/com/android/layoutlib/bridge/intensive/Main.java b/tools/layoutlib/bridge/tests/src/com/android/layoutlib/bridge/intensive/Main.java
index 2726042..c2f06e8 100644
--- a/tools/layoutlib/bridge/tests/src/com/android/layoutlib/bridge/intensive/Main.java
+++ b/tools/layoutlib/bridge/tests/src/com/android/layoutlib/bridge/intensive/Main.java
@@ -21,6 +21,7 @@
 import com.android.ide.common.rendering.api.Result;
 import com.android.ide.common.rendering.api.SessionParams;
 import com.android.ide.common.rendering.api.SessionParams.RenderingMode;
+import com.android.ide.common.rendering.api.ViewInfo;
 import com.android.ide.common.resources.FrameworkResources;
 import com.android.ide.common.resources.ResourceItem;
 import com.android.ide.common.resources.ResourceRepository;
@@ -48,9 +49,11 @@
 import java.net.URL;
 import java.util.Arrays;
 import java.util.Comparator;
-import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 /**
@@ -398,6 +401,40 @@
         renderAndVerify(params, "vector_drawable.png", TimeUnit.SECONDS.toNanos(2));
     }
 
+    /** Test activity.xml */
+    @Test
+    public void testScrolling() throws ClassNotFoundException {
+        // Create the layout pull parser.
+        LayoutPullParser parser = new LayoutPullParser(APP_TEST_RES + "/layout/" +
+                "scrolled.xml");
+        // Create LayoutLibCallback.
+        LayoutLibTestCallback layoutLibCallback = new LayoutLibTestCallback(getLogger());
+        layoutLibCallback.initResources();
+
+        SessionParams params = getSessionParams(parser, ConfigGenerator.NEXUS_5,
+                layoutLibCallback, "Theme.Material.NoActionBar.Fullscreen", false,
+                RenderingMode.V_SCROLL, 22);
+        params.setForceNoDecor();
+        params.setExtendedViewInfoMode(true);
+
+        RenderResult result = renderAndVerify(params, "scrolled.png");
+        assertNotNull(result);
+        assertTrue(result.getResult().isSuccess());
+
+        ViewInfo rootLayout = result.getRootViews().get(0);
+        // Check the first box in the main LinearLayout
+        assertEquals(-90, rootLayout.getChildren().get(0).getTop());
+        assertEquals(-30, rootLayout.getChildren().get(0).getLeft());
+        assertEquals(90, rootLayout.getChildren().get(0).getBottom());
+        assertEquals(150, rootLayout.getChildren().get(0).getRight());
+
+        // Check the first box within the nested LinearLayout
+        assertEquals(-450, rootLayout.getChildren().get(5).getChildren().get(0).getTop());
+        assertEquals(90, rootLayout.getChildren().get(5).getChildren().get(0).getLeft());
+        assertEquals(-270, rootLayout.getChildren().get(5).getChildren().get(0).getBottom());
+        assertEquals(690, rootLayout.getChildren().get(5).getChildren().get(0).getRight());
+    }
+
     /**
      * Create a new rendering session and test that rendering the given layout doesn't throw any
      * exceptions and matches the provided image.
@@ -405,7 +442,8 @@
      * If frameTimeNanos is >= 0 a frame will be executed during the rendering. The time indicates
      * how far in the future is.
      */
-    private void renderAndVerify(SessionParams params, String goldenFileName, long frameTimeNanos)
+    @Nullable
+    private RenderResult renderAndVerify(SessionParams params, String goldenFileName, long frameTimeNanos)
             throws ClassNotFoundException {
         // TODO: Set up action bar handler properly to test menu rendering.
         // Create session params.
@@ -428,36 +466,43 @@
         try {
             String goldenImagePath = APP_TEST_DIR + "/golden/" + goldenFileName;
             ImageUtils.requireSimilar(goldenImagePath, session.getImage());
+
+            return RenderResult.getFromSession(session);
         } catch (IOException e) {
             getLogger().error(e, e.getMessage());
         } finally {
             session.dispose();
         }
+
+        return null;
     }
 
     /**
      * Create a new rendering session and test that rendering the given layout doesn't throw any
      * exceptions and matches the provided image.
      */
-    private void renderAndVerify(SessionParams params, String goldenFileName)
+    @Nullable
+    private RenderResult renderAndVerify(SessionParams params, String goldenFileName)
             throws ClassNotFoundException {
-        renderAndVerify(params, goldenFileName, -1);
+        return renderAndVerify(params, goldenFileName, -1);
     }
 
     /**
      * Create a new rendering session and test that rendering the given layout on nexus 5
      * doesn't throw any exceptions and matches the provided image.
      */
-    private void renderAndVerify(String layoutFileName, String goldenFileName)
+    @Nullable
+    private RenderResult renderAndVerify(String layoutFileName, String goldenFileName)
             throws ClassNotFoundException {
-        renderAndVerify(layoutFileName, goldenFileName, ConfigGenerator.NEXUS_5);
+        return renderAndVerify(layoutFileName, goldenFileName, ConfigGenerator.NEXUS_5);
     }
 
     /**
      * Create a new rendering session and test that rendering the given layout on given device
      * doesn't throw any exceptions and matches the provided image.
      */
-    private void renderAndVerify(String layoutFileName, String goldenFileName,
+    @Nullable
+    private RenderResult renderAndVerify(String layoutFileName, String goldenFileName,
             ConfigGenerator deviceConfig)
             throws ClassNotFoundException {
         // Create the layout pull parser.
@@ -469,7 +514,7 @@
         // Create session params.
         SessionParams params = getSessionParams(parser, deviceConfig,
                 layoutLibCallback, "AppTheme", true, RenderingMode.NORMAL, 22);
-        renderAndVerify(params, goldenFileName);
+        return renderAndVerify(params, goldenFileName);
     }
 
     /**
diff --git a/tools/layoutlib/bridge/tests/src/com/android/layoutlib/bridge/intensive/RenderResult.java b/tools/layoutlib/bridge/tests/src/com/android/layoutlib/bridge/intensive/RenderResult.java
new file mode 100644
index 0000000..17b20f7
--- /dev/null
+++ b/tools/layoutlib/bridge/tests/src/com/android/layoutlib/bridge/intensive/RenderResult.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.layoutlib.bridge.intensive;
+
+import com.android.ide.common.rendering.api.RenderSession;
+import com.android.ide.common.rendering.api.Result;
+import com.android.ide.common.rendering.api.ViewInfo;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+class RenderResult {
+    private final List<ViewInfo> mRootViews;
+    private final List<ViewInfo> mSystemViews;
+    private final Result mRenderResult;
+
+    private RenderResult(@Nullable Result result, @Nullable List<ViewInfo> systemViewInfoList,
+            @Nullable List<ViewInfo> rootViewInfoList) {
+        mSystemViews = systemViewInfoList == null ? Collections.emptyList() : systemViewInfoList;
+        mRootViews = rootViewInfoList == null ? Collections.emptyList() : rootViewInfoList;
+        mRenderResult = result;
+    }
+
+    @NonNull
+    static RenderResult getFromSession(@NonNull RenderSession session) {
+        return new RenderResult(session.getResult(),
+                new ArrayList<>(session.getSystemRootViews()),
+                new ArrayList<>(session.getRootViews()));
+    }
+
+    @Nullable
+    Result getResult() {
+        return mRenderResult;
+    }
+
+    @NonNull
+    public List<ViewInfo> getRootViews() {
+        return mRootViews;
+    }
+
+    @NonNull
+    public List<ViewInfo> getSystemViews() {
+        return mSystemViews;
+    }
+}