Smoother scrolling by preparing offscreen tiles (credit: Ben Murdoch) (84a34059) · Commits · e / os / android_frameworks_base

core/java/android/webkit/WebView.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -8145,6 +8145,15 @@ public class WebView extends AbsoluteLayout
		nativeDraw(canvas, 0, 0, false);
		}

		/**
		* Enable expanded tiles bound for smoother scrolling.
		*
		* @hide only used by the Browser
		*/
		public void setExpandedTileBounds(boolean enabled) {
		mWebViewCore.sendMessage(EventHub.SET_EXPANDED_TILE_BOUNDS, enabled ? 1 : 0, 0);
		}

		/**
		* Set the time to wait between passing touches to WebCore. See also the
		* TOUCH_SENT_INTERVAL member for further discussion.

+8 −0

Original line number	Diff line number	Diff line
		@@ -578,6 +578,8 @@ final class WebViewCore {

		private native void nativeSetJsFlags(String flags);

		private native void nativeSetExpandedTileBounds(boolean enabled);

		/**
		* Delete text from start to end in the focused textfield. If there is no
		* focus, or if start == end, silently fail. If start and end are out of
		@@ -999,6 +1001,8 @@ final class WebViewCore {

		static final int PROXY_CHANGED = 193;

		static final int SET_EXPANDED_TILE_BOUNDS = 194;

		// private message ids
		private static final int DESTROY = 200;

		@@ -1558,6 +1562,10 @@ final class WebViewCore {
		mWebView.mPrivateHandler.obtainMessage(WebView.AUTOFILL_COMPLETE, null)
		.sendToTarget();
		break;

		case EventHub.SET_EXPANDED_TILE_BOUNDS:
		nativeSetExpandedTileBounds(msg.arg1 == 1);
		break;
		}
		}
		};