The Tor Browser / file comparison
comparison: mobile/android/base/gfx/VirtualLayer.java
mobile/android/base/gfx/VirtualLayer.java
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
equal
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| -1:000000000000 | 0:2434040fd12c |
|---|---|
| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.gfx; | |
| 7 | |
| 8 public class VirtualLayer extends Layer { | |
| 9 public VirtualLayer(IntSize size) { | |
| 10 super(size); | |
| 11 } | |
| 12 | |
| 13 @Override | |
| 14 public void draw(RenderContext context) { | |
| 15 // No-op. | |
| 16 } | |
| 17 | |
| 18 void setPositionAndResolution(int left, int top, int right, int bottom, float newResolution) { | |
| 19 // This is an optimized version of the following code: | |
| 20 // beginTransaction(); | |
| 21 // try { | |
| 22 // setPosition(new Rect(left, top, right, bottom)); | |
| 23 // setResolution(newResolution); | |
| 24 // performUpdates(null); | |
| 25 // } finally { | |
| 26 // endTransaction(); | |
| 27 // } | |
| 28 | |
| 29 // it is safe to drop the transaction lock in this instance (i.e. for the | |
| 30 // VirtualLayer that is just a shadow of what gecko is painting) because | |
| 31 // the position and resolution of this layer are always touched on the compositor | |
| 32 // thread, and therefore do not require synchronization. | |
| 33 mPosition.set(left, top, right, bottom); | |
| 34 mResolution = newResolution; | |
| 35 } | |
| 36 } |
