зеркало из https://github.com/mozilla/gecko-dev.git
142 строки
4.5 KiB
C++
142 строки
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Roland Mainz <Roland.Mainz@informatik.med.uni-giessen.de>
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*/
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#ifndef nsDeviceContext_h___
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#define nsDeviceContext_h___
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#include "nsIDeviceContext.h"
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#include "nsIDeviceContextSpec.h"
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#include "nsCOMPtr.h"
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#include "nsIAtom.h"
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#include "nsVoidArray.h"
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class nsIImageRequest;
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class nsHashtable;
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class nsFontCache
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{
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public:
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nsFontCache();
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virtual ~nsFontCache();
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NS_IMETHOD Init(nsIDeviceContext* aContext);
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NS_IMETHOD GetDeviceContext(nsIDeviceContext *&aContext) const;
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NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIAtom* aLangGroup,
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nsIFontMetrics *&aMetrics);
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nsresult Flush();
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/* printer device context classes may create their own
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* subclasses of nsFontCache (and override this method) and override
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* DeviceContextImpl::CreateFontCache (see bug 81311).
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*/
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NS_IMETHOD CreateFontMetricsInstance(nsIFontMetrics** fm);
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protected:
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nsVoidArray mFontMetrics;
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nsIDeviceContext *mContext; // we do not addref this since
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// ownership is implied. MMP.
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};
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class NS_GFX DeviceContextImpl : public nsIDeviceContext
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{
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public:
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DeviceContextImpl();
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NS_DECL_ISUPPORTS
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NS_IMETHOD Init(nsNativeWidget aWidget);
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NS_IMETHOD CreateRenderingContext(nsIView *aView, nsIRenderingContext *&aContext);
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NS_IMETHOD CreateRenderingContext(nsIWidget *aWidget, nsIRenderingContext *&aContext);
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NS_IMETHOD CreateRenderingContext(nsIRenderingContext *&aContext){return NS_ERROR_NOT_IMPLEMENTED;}
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NS_IMETHOD InitRenderingContext(nsIRenderingContext *aContext, nsIWidget *aWindow);
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NS_IMETHOD GetDevUnitsToTwips(float &aDevUnitsToTwips) const;
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NS_IMETHOD GetTwipsToDevUnits(float &aTwipsToDevUnits) const;
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NS_IMETHOD SetAppUnitsToDevUnits(float aAppUnits);
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NS_IMETHOD SetDevUnitsToAppUnits(float aDevUnits);
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NS_IMETHOD GetAppUnitsToDevUnits(float &aAppUnits) const;
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NS_IMETHOD GetDevUnitsToAppUnits(float &aDevUnits) const;
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NS_IMETHOD GetCanonicalPixelScale(float &aScale) const;
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NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIAtom* aLangGroup,
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nsIFontMetrics*& aMetrics);
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NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIFontMetrics*& aMetrics);
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NS_IMETHOD SetZoom(float aZoom);
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NS_IMETHOD GetZoom(float &aZoom) const;
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NS_IMETHOD SetTextZoom(float aTextZoom);
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NS_IMETHOD GetTextZoom(float &aTextZoom) const;
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NS_IMETHOD GetGamma(float &aGamma);
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NS_IMETHOD SetGamma(float aGamma);
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NS_IMETHOD GetGammaTable(PRUint8 *&aGammaTable);
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NS_IMETHOD FirstExistingFont(const nsFont& aFont, nsString& aFaceName);
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NS_IMETHOD GetLocalFontName(const nsString& aFaceName, nsString& aLocalName,
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PRBool& aAliased);
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NS_IMETHOD CreateFontCache();
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NS_IMETHOD FlushFontCache(void);
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NS_IMETHOD GetDepth(PRUint32& aDepth);
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protected:
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virtual ~DeviceContextImpl();
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void CommonInit(void);
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void SetGammaTable(PRUint8 * aTable, float aCurrentGamma, float aNewGamma);
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nsresult CreateIconILGroupContext();
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virtual nsresult CreateFontAliasTable();
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nsresult AliasFont(const nsString& aFont,
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const nsString& aAlias, const nsString& aAltAlias,
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PRBool aForceAlias);
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void GetLocaleLangGroup(void);
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float mTwipsToPixels;
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float mPixelsToTwips;
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float mAppUnitsToDevUnits;
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float mDevUnitsToAppUnits;
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nsFontCache *mFontCache;
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nsCOMPtr<nsIAtom> mLocaleLangGroup; // XXX temp fix for performance bug - erik
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float mZoom;
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float mTextZoom;
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float mGammaValue;
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PRUint8 *mGammaTable;
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nsHashtable* mFontAliasTable;
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float mCPixelScale;
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public:
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nsNativeWidget mWidget;
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};
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#endif /* nsDeviceContext_h___ */
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