/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: NPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Netscape Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Roland Mainz * * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the NPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the NPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #ifndef nsDeviceContext_h___ #define nsDeviceContext_h___ #include "nsIDeviceContext.h" #include "nsIDeviceContextSpec.h" #include "nsCOMPtr.h" #include "nsIAtom.h" #include "nsVoidArray.h" #include "nsIObserver.h" #include "nsIObserverService.h" #include "nsWeakReference.h" class nsIImageRequest; class nsHashtable; class nsFontCache { public: nsFontCache(); virtual ~nsFontCache(); NS_IMETHOD Init(nsIDeviceContext* aContext); NS_IMETHOD GetDeviceContext(nsIDeviceContext *&aContext) const; NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIAtom* aLangGroup, nsIFontMetrics *&aMetrics); nsresult FontMetricsDeleted(const nsIFontMetrics* aFontMetrics); nsresult Compact(); nsresult Flush(); /* printer device context classes may create their own * subclasses of nsFontCache (and override this method) and override * DeviceContextImpl::CreateFontCache (see bug 81311). */ NS_IMETHOD CreateFontMetricsInstance(nsIFontMetrics** fm); protected: nsVoidArray mFontMetrics; nsIDeviceContext *mContext; // we do not addref this since // ownership is implied. MMP. }; class NS_GFX DeviceContextImpl : public nsIDeviceContext, public nsIObserver, public nsSupportsWeakReference { public: DeviceContextImpl(); NS_DECL_ISUPPORTS NS_DECL_NSIOBSERVER NS_IMETHOD Init(nsNativeWidget aWidget); NS_IMETHOD CreateRenderingContext(nsIView *aView, nsIRenderingContext *&aContext); NS_IMETHOD CreateRenderingContext(nsIWidget *aWidget, nsIRenderingContext *&aContext); NS_IMETHOD CreateRenderingContext(nsIRenderingContext *&aContext){return NS_ERROR_NOT_IMPLEMENTED;} NS_IMETHOD InitRenderingContext(nsIRenderingContext *aContext, nsIWidget *aWindow); NS_IMETHOD GetDevUnitsToTwips(float &aDevUnitsToTwips) const; NS_IMETHOD GetTwipsToDevUnits(float &aTwipsToDevUnits) const; NS_IMETHOD SetAppUnitsToDevUnits(float aAppUnits); NS_IMETHOD SetDevUnitsToAppUnits(float aDevUnits); NS_IMETHOD GetAppUnitsToDevUnits(float &aAppUnits) const; NS_IMETHOD GetDevUnitsToAppUnits(float &aDevUnits) const; NS_IMETHOD GetCanonicalPixelScale(float &aScale) const; NS_IMETHOD SetCanonicalPixelScale(float aScale); NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIAtom* aLangGroup, nsIFontMetrics*& aMetrics); NS_IMETHOD GetMetricsFor(const nsFont& aFont, nsIFontMetrics*& aMetrics); NS_IMETHOD SetZoom(float aZoom); NS_IMETHOD GetZoom(float &aZoom) const; NS_IMETHOD SetTextZoom(float aTextZoom); NS_IMETHOD GetTextZoom(float &aTextZoom) const; NS_IMETHOD FirstExistingFont(const nsFont& aFont, nsString& aFaceName); NS_IMETHOD GetLocalFontName(const nsString& aFaceName, nsString& aLocalName, PRBool& aAliased); NS_IMETHOD CreateFontCache(); NS_IMETHOD FontMetricsDeleted(const nsIFontMetrics* aFontMetrics); NS_IMETHOD FlushFontCache(void); NS_IMETHOD GetDepth(PRUint32& aDepth); NS_IMETHOD GetPaletteInfo(nsPaletteInfo& aPaletteInfo); NS_IMETHOD AbortDocument(void) { return NS_OK; } #ifdef NS_PRINT_PREVIEW NS_IMETHOD SetAltDevice(nsIDeviceContext* aAltDC); NS_IMETHOD GetAltDevice(nsIDeviceContext** aAltDC) { *aAltDC = mAltDC.get(); NS_IF_ADDREF(*aAltDC); return NS_OK;} NS_IMETHOD SetUseAltDC(PRUint8 aValue, PRBool aOn); #else #endif protected: virtual ~DeviceContextImpl(); void CommonInit(void); nsresult CreateIconILGroupContext(); virtual nsresult CreateFontAliasTable(); nsresult AliasFont(const nsString& aFont, const nsString& aAlias, const nsString& aAltAlias, PRBool aForceAlias); void GetLocaleLangGroup(void); float mTwipsToPixels; float mPixelsToTwips; float mAppUnitsToDevUnits; float mDevUnitsToAppUnits; nsFontCache *mFontCache; nsCOMPtr mLocaleLangGroup; // XXX temp fix for performance bug - erik float mZoom; float mTextZoom; nsHashtable* mFontAliasTable; float mCPixelScale; #ifdef NS_PRINT_PREVIEW nsCOMPtr mAltDC; PRUint8 mUseAltDC; #endif public: nsNativeWidget mWidget; #ifdef NS_DEBUG PRBool mInitialized; #endif }; #endif /* nsDeviceContext_h___ */