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https://gitlab.winehq.org/wine/wine-gecko.git
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1c2dd7f8ef
Fix overdrawing of the checkerboard layer by letting layers have a concept of a display-port, and keeping the root layer's display port in track with Gecko's.
84 lines
3.4 KiB
Java
84 lines
3.4 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009-2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Patrick Walton <pcwalton@mozilla.com>
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* Chris Lord <chrislord.net@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko.gfx;
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import android.graphics.Rect;
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public class VirtualLayer extends Layer {
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public VirtualLayer(IntSize size) {
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super(size);
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}
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@Override
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public void draw(RenderContext context) {
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// No-op.
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}
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void setPositionAndResolution(Rect newPosition, float newResolution) {
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// This is an optimized version of the following code:
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// beginTransaction();
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// try {
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// setPosition(newPosition);
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// setResolution(newResolution);
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// performUpdates(null);
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// } finally {
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// endTransaction();
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// }
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// it is safe to drop the transaction lock in this instance (i.e. for the
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// VirtualLayer that is just a shadow of what gecko is painting) because
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// the position and resolution of this layer are never used for anything
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// meaningful.
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// XXX The above is not true any more; the compositor uses these values
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// in order to determine where to draw the checkerboard. The values are
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// also used in LayerController's convertViewPointToLayerPoint function.
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mPosition = newPosition;
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mResolution = newResolution;
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}
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@Override
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public void setDisplayPort(Rect displayPort) {
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// Similar to the above, this removes the lock from setDisplayPort. As
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// this is currently only called by the Compositor, and it is only
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// accessed by the composition thread, it is safe to remove the locks
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// from this call.
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mDisplayPort = displayPort;
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}
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}
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