зеркало из https://github.com/mozilla/gecko-dev.git
112 строки
3.9 KiB
C++
112 строки
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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 Foundation 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) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Vladimir Vukicevic <vladimir@pobox.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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#ifndef GFX_PLATFORM_H
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#define GFX_PLATFORM_H
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#include "prtypes.h"
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#include "nsVoidArray.h"
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#include "gfxTypes.h"
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#include "gfxASurface.h"
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class gfxImageSurface;
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class THEBES_API gfxPlatform {
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public:
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/**
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* Return a pointer to the current active platform.
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* This is a singleton; it contains mostly convenience
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* functions to obtain platform-specific objects.
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*/
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static gfxPlatform *GetPlatform();
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/**
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* Return PR_TRUE if we're to use Glitz for acceleration.
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*/
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static PRBool UseGlitz();
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/**
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* Force the glitz state to on or off
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*/
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static void SetUseGlitz(PRBool use);
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/**
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* Create an offscreen surface of the given dimensions
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* and image format. If fastPixelAccess is TRUE,
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* create a surface that is optimized for rapid pixel
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* changing.
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*/
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virtual already_AddRefed<gfxASurface> CreateOffscreenSurface(PRUint32 width,
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PRUint32 height,
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gfxASurface::gfxImageFormat imageFormat) = 0;
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virtual already_AddRefed<gfxASurface> OptimizeImage(gfxImageSurface *aSurface);
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/*
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* Font bits
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*/
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/**
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* Fill aListOfFonts with the results of querying the list of font names
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* that correspond to the given language group or generic font family
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* (or both, or neither).
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*/
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virtual nsresult GetFontList(const nsACString& aLangGroup,
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const nsACString& aGenericFamily,
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nsStringArray& aListOfFonts);
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/**
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* Rebuilds the any cached system font lists
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*/
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virtual nsresult UpdateFontList();
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/* Returns PR_TRUE if the given block of ARGB32 data really has alpha, otherwise PR_FALSE */
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static PRBool DoesARGBImageDataHaveAlpha(PRUint8* data,
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PRUint32 width,
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PRUint32 height,
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PRUint32 stride);
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protected:
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gfxPlatform() { }
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virtual ~gfxPlatform() { }
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};
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#endif /* GFX_PLATFORM_H */
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