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Smoother scrolling by preparing offscreen tiles (credit: Ben Murdoch)

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Change-Id: If8f6aa38174e742e869bce7144de8db84b2f7150
This commit is contained in:
Dave Burke
2011-02-01 12:57:54 +00:00
parent ad97c1b128
commit 84a34059eb
2 changed files with 17 additions and 0 deletions
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9
core/java/android/webkit/WebView.java
View File

@ -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
core/java/android/webkit/WebViewCore.java
View File

@ -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;
}
}
};