gecko/mobile/android/base/gfx/LayerClient.java

77 lines
2.8 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Android code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009-2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Patrick Walton <pcwalton@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.gecko.gfx;
/**
* A layer client provides tiles and manages other information used by the layer controller.
*/
public abstract class LayerClient {
private LayerController mLayerController;
public abstract void geometryChanged();
public abstract void viewportSizeChanged();
protected abstract void render();
public LayerController getLayerController() { return mLayerController; }
public void setLayerController(LayerController layerController) {
mLayerController = layerController;
}
/**
* A utility function for calling Layer.beginTransaction with the
* appropriate LayerView.
*/
public void beginTransaction(Layer aLayer) {
if (mLayerController != null) {
LayerView view = mLayerController.getView();
if (view != null) {
aLayer.beginTransaction(view);
return;
}
}
aLayer.beginTransaction();
}
// Included for symmetry.
public void endTransaction(Layer aLayer) {
aLayer.endTransaction();
}
}