widget/gonk/Framebuffer.h@6474c204b198 (annotated)
widget/gonk/Framebuffer.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set sw=2 ts=8 et ft=cpp : */ |
| michael@0 | 3 | /* Copyright 2012 Mozilla Foundation and Mozilla contributors |
| michael@0 | 4 | * |
| michael@0 | 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| michael@0 | 6 | * you may not use this file except in compliance with the License. |
| michael@0 | 7 | * You may obtain a copy of the License at |
| michael@0 | 8 | * |
| michael@0 | 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| michael@0 | 10 | * |
| michael@0 | 11 | * Unless required by applicable law or agreed to in writing, software |
| michael@0 | 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| michael@0 | 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| michael@0 | 14 | * See the License for the specific language governing permissions and |
| michael@0 | 15 | * limitations under the License. |
| michael@0 | 16 | */ |
| michael@0 | 17 | |
| michael@0 | 18 | class gfxASurface; |
| michael@0 | 19 | class nsIntRegion; |
| michael@0 | 20 | class nsIntSize; |
| michael@0 | 21 | |
| michael@0 | 22 | namespace mozilla { |
| michael@0 | 23 | |
| michael@0 | 24 | namespace Framebuffer { |
| michael@0 | 25 | |
| michael@0 | 26 | // |
| michael@0 | 27 | // The general usage of Framebuffer is |
| michael@0 | 28 | // |
| michael@0 | 29 | // -- in initialization code -- |
| michael@0 | 30 | // Open(); |
| michael@0 | 31 | // |
| michael@0 | 32 | // -- ready to paint next frame -- |
| michael@0 | 33 | // nsRefPtr<gfxASurface> backBuffer = BackBuffer(); |
| michael@0 | 34 | // // ... |
| michael@0 | 35 | // Paint(backBuffer); |
| michael@0 | 36 | // // ... |
| michael@0 | 37 | // Present(); |
| michael@0 | 38 | // |
| michael@0 | 39 | |
| michael@0 | 40 | // Return true if the fbdev was successfully opened. If this fails, |
| michael@0 | 41 | // the result of all further calls is undefined. Open() is idempotent. |
| michael@0 | 42 | bool Open(); |
| michael@0 | 43 | |
| michael@0 | 44 | // After Close(), the result of all further calls is undefined. |
| michael@0 | 45 | // Close() is idempotent, and Open() can be called again after |
| michael@0 | 46 | // Close(). |
| michael@0 | 47 | void Close(); |
| michael@0 | 48 | |
| michael@0 | 49 | // Return true if the fbdev was successfully opened or the size was |
| michael@0 | 50 | // already cached. |
| michael@0 | 51 | bool GetSize(nsIntSize *aScreenSize); |
| michael@0 | 52 | |
| michael@0 | 53 | // Return the buffer to be drawn into, that will be the next frame. |
| michael@0 | 54 | gfxASurface* BackBuffer(); |
| michael@0 | 55 | |
| michael@0 | 56 | // Swap the front buffer for the back buffer. |aUpdated| is the |
| michael@0 | 57 | // region of the back buffer that was repainted. |
| michael@0 | 58 | void Present(const nsIntRegion& aUpdated); |
| michael@0 | 59 | |
| michael@0 | 60 | } // namespace Framebuffer |
| michael@0 | 61 | |
| michael@0 | 62 | } // namespace mozilla |
