Rewrite PictureSet

Removes no longer supported splitPicture
Removes unnused code

Bulk of the change is in webkit CL: https://android-git.corp.google.com/g/#/c/185850/

Change-Id: I4eca363ba3cb4a6d6fccc82bf5ea8588df780a4b

Author: jreck

core/java/android/webkit/WebViewClassic.java

@@ -984,7 +984,6 @@ public void onTrimMemory(int level) {
     static final int REQUEST_KEYBOARD                   = 118;
     static final int SHOW_FULLSCREEN                    = 120;
     static final int HIDE_FULLSCREEN                    = 121;
-    static final int REPLACE_BASE_CONTENT               = 123;
     static final int UPDATE_MATCH_COUNT                 = 126;
     static final int CENTER_FIT_RECT                    = 127;
     static final int SET_SCROLLBAR_MODES                = 129;
@@ -4232,14 +4231,8 @@ && nativeEvaluateLayersAnimations(mNativeClass)) {
                 df = mScrollFilter;
             }
             canvas.setDrawFilter(df);
-            // XXX: Revisit splitting content.  Right now it causes a
-            // synchronization problem with layers.
-            int content = nativeDraw(canvas, mVisibleContentRect, mBackgroundColor,
-                    extras, false);
+            nativeDraw(canvas, mVisibleContentRect, mBackgroundColor, extras);
             canvas.setDrawFilter(null);
-            if (!mBlockWebkitViewMessages && content != 0) {
-                mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0);
-            }
         }
 
         canvas.restoreToCount(saveCount);
@@ -7245,10 +7238,6 @@ public void handleMessage(Message msg) {
                     mZoomManager.updateDefaultZoomDensity(density);
                     break;
                 }
-                case REPLACE_BASE_CONTENT: {
-                    nativeReplaceBaseContent(msg.arg1);
-                    break;
-                }
                 case NEW_PICTURE_MSG_ID: {
                     // called for new content
                     final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj;
@@ -8422,18 +8411,6 @@ public void setBackgroundColor(int color) {
     public void debugDump() {
     }
 
-    /**
-     * Draw the HTML page into the specified canvas. This call ignores any
-     * view-specific zoom, scroll offset, or other changes. It does not draw
-     * any view-specific chrome, such as progress or URL bars.
-     *
-     * only needs to be accessible to Browser and testing
-     */
-    public void drawPage(Canvas canvas) {
-        calcOurContentVisibleRectF(mVisibleContentRect);
-        nativeDraw(canvas, mVisibleContentRect, 0, 0, false);
-    }
-
     /**
      * Enable the communication b/t the webView and VideoViewProxy
      *
@@ -8567,14 +8544,8 @@ private void postInvalidate() {
     private native void     nativeDebugDump();
     private native void     nativeDestroy();
 
-    /**
-     * Draw the picture set with a background color and extra. If
-     * "splitIfNeeded" is true and the return value is not 0, the return value
-     * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the
-     * native allocation can be freed.
-     */
-    private native int nativeDraw(Canvas canvas, RectF visibleRect,
-            int color, int extra, boolean splitIfNeeded);
+    private native void nativeDraw(Canvas canvas, RectF visibleRect,
+            int color, int extra);
     private native void     nativeDumpDisplayTree(String urlOrNull);
     private native boolean  nativeEvaluateLayersAnimations(int nativeInstance);
     private native int      nativeCreateDrawGLFunction(int nativeInstance, Rect rect,
@@ -8588,7 +8559,6 @@ private native void     nativeUpdateDrawGLFunction(int nativeInstance, Rect rect
     private native boolean  nativeSetBaseLayer(int nativeInstance,
             int layer, boolean showVisualIndicator, boolean isPictureAfterFirstLayout);
     private native int      nativeGetBaseLayer();
-    private native void     nativeReplaceBaseContent(int content);
     private native void     nativeCopyBaseContentToPicture(Picture pict);
     private native boolean  nativeHasContent();
     private native void     nativeStopGL();

core/java/android/webkit/WebViewCore.java

@@ -610,12 +610,6 @@ protected void exitFullscreenVideo() {
 
     private native boolean nativeFocusBoundsChanged(int nativeClass);
 
-    /**
-     * Splits slow parts of the picture set. Called from the webkit thread after
-     * WebView.nativeDraw() returns content to be split.
-     */
-    private native void nativeSplitContent(int nativeClass, int content);
-
     private native boolean nativeKey(int nativeClass, int keyCode,
             int unichar, int repeatCount, boolean isShift, boolean isAlt,
             boolean isSym, boolean isDown);
@@ -1018,7 +1012,7 @@ static class GeolocationPermissionsData {
             "WEBKIT_DRAW", // = 130;
             "131", // = 131;
             "POST_URL", // = 132;
-            "SPLIT_PICTURE_SET", // = 133;
+            "", // = 133;
             "CLEAR_CONTENT", // = 134;
             "", // = 135;
             "", // = 136;
@@ -1094,7 +1088,6 @@ public class EventHub implements WebViewInputDispatcher.WebKitCallbacks {
 
         static final int WEBKIT_DRAW = 130;
         static final int POST_URL = 132;
-        static final int SPLIT_PICTURE_SET = 133;
         static final int CLEAR_CONTENT = 134;
 
         // UI nav messages
@@ -1611,13 +1604,6 @@ public void handleMessage(Message msg) {
                                     data.mOrigin, data.mAllow, data.mRemember);
                             break;
 
-                        case SPLIT_PICTURE_SET:
-                            nativeSplitContent(mNativeClass, msg.arg1);
-                            mWebViewClassic.mPrivateHandler.obtainMessage(
-                                    WebViewClassic.REPLACE_BASE_CONTENT, msg.arg1, 0);
-                            mSplitPictureIsScheduled = false;
-                            break;
-
                         case CLEAR_CONTENT:
                             // Clear the view so that onDraw() will draw nothing
                             // but white background
@@ -1879,7 +1865,6 @@ private synchronized void sendMessageAtFrontOfQueue(Message msg) {
         private synchronized void removeMessages() {
             // reset mDrawIsScheduled flag as WEBKIT_DRAW may be removed
             mDrawIsScheduled = false;
-            mSplitPictureIsScheduled = false;
             if (mMessages != null) {
                 mMessages.clear();
             } else {
@@ -2141,20 +2126,9 @@ private long getUsedQuota() {
         return usedQuota;
     }
 
-    // called from UI thread
-    void splitContent(int content) {
-        if (!mSplitPictureIsScheduled) {
-            mSplitPictureIsScheduled = true;
-            sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0);
-        }
-    }
-
     // Used to avoid posting more than one draw message.
     private boolean mDrawIsScheduled;
 
-    // Used to avoid posting more than one split picture message.
-    private boolean mSplitPictureIsScheduled;
-
     // Used to suspend drawing.
     private boolean mDrawIsPaused;