/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla 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/MPL/ * * 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 * mozilla.org. * Portions created by the Initial Developer are Copyright (C) 2004 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Stuart Parmenter * Joe Hewitt * * 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 MPL, 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 MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #ifndef NSCAIRORENDERINGCONTEXT__H__ #define NSCAIRORENDERINGCONTEXT__H__ #include #include "nsCOMPtr.h" #include "nsIRenderingContext.h" #include "nsIDeviceContext.h" #include "nsIFontMetrics.h" #include "nsIWidget.h" #include "nsPoint.h" #include "nsSize.h" #include "nsColor.h" #include "nsRect.h" #include "nsIRegion.h" #include "nsTransform2D.h" #include "nsVoidArray.h" #include "nsICairoFontMetrics.h" class nsIImage; class nsCairoDrawingSurface; class nsCairoRenderingContext : public nsIRenderingContext { public: nsCairoRenderingContext(); virtual ~nsCairoRenderingContext(); NS_DECL_ISUPPORTS NS_IMETHOD Init(nsIDeviceContext* aContext, nsIWidget *aWidget); NS_IMETHOD Init(nsIDeviceContext* aContext, nsIDrawingSurface *aSurface); NS_IMETHOD CommonInit(void); NS_IMETHOD Reset(void); NS_IMETHOD GetDeviceContext(nsIDeviceContext *& aDeviceContext); NS_IMETHOD LockDrawingSurface(PRInt32 aX, PRInt32 aY, PRUint32 aWidth, PRUint32 aHeight, void **aBits, PRInt32 *aStride, PRInt32 *aWidthBytes, PRUint32 aFlags); NS_IMETHOD UnlockDrawingSurface(void); NS_IMETHOD SelectOffScreenDrawingSurface(nsIDrawingSurface *aSurface); NS_IMETHOD GetDrawingSurface(nsIDrawingSurface **aSurface); NS_IMETHOD GetHints(PRUint32& aResult); NS_IMETHOD PushState(void); NS_IMETHOD PopState(void); NS_IMETHOD IsVisibleRect(const nsRect& aRect, PRBool &aIsVisible); NS_IMETHOD SetClipRect(const nsRect& aRect, nsClipCombine aCombine); NS_IMETHOD GetClipRect(nsRect &aRect, PRBool &aHasLocalClip); NS_IMETHOD SetLineStyle(nsLineStyle aLineStyle); NS_IMETHOD GetLineStyle(nsLineStyle &aLineStyle); NS_IMETHOD GetPenMode(nsPenMode &aPenMode); NS_IMETHOD SetPenMode(nsPenMode aPenMode); NS_IMETHOD SetClipRegion(const nsIRegion& aRegion, nsClipCombine aCombine); NS_IMETHOD CopyClipRegion(nsIRegion &aRegion); NS_IMETHOD GetClipRegion(nsIRegion **aRegion); NS_IMETHOD SetColor(nscolor aColor); NS_IMETHOD GetColor(nscolor &aColor) const; NS_IMETHOD SetFont(const nsFont& aFont, nsIAtom* aLangGroup); NS_IMETHOD SetFont(nsIFontMetrics *aFontMetrics); NS_IMETHOD GetFontMetrics(nsIFontMetrics *&aFontMetrics); NS_IMETHOD Translate(nscoord aX, nscoord aY); NS_IMETHOD Scale(float aSx, float aSy); NS_IMETHOD GetCurrentTransform(nsTransform2D *&aTransform); NS_IMETHOD CreateDrawingSurface(const nsRect &aBounds, PRUint32 aSurfFlags, nsIDrawingSurface* &aSurface); NS_IMETHOD DestroyDrawingSurface(nsIDrawingSurface *aDS); NS_IMETHOD DrawLine(nscoord aX0, nscoord aY0, nscoord aX1, nscoord aY1); NS_IMETHOD DrawPolyline(const nsPoint aPoints[], PRInt32 aNumPoints); NS_IMETHOD DrawRect(const nsRect& aRect); NS_IMETHOD DrawRect(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight); NS_IMETHOD FillRect(const nsRect& aRect); NS_IMETHOD FillRect(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight); NS_IMETHOD InvertRect(const nsRect& aRect); NS_IMETHOD InvertRect(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight); NS_IMETHOD FlushRect(const nsRect& aRect); NS_IMETHOD FlushRect(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight); NS_IMETHOD DrawPolygon(const nsPoint aPoints[], PRInt32 aNumPoints); NS_IMETHOD FillPolygon(const nsPoint aPoints[], PRInt32 aNumPoints); NS_IMETHOD DrawEllipse(const nsRect& aRect); NS_IMETHOD DrawEllipse(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight); NS_IMETHOD FillEllipse(const nsRect& aRect); NS_IMETHOD FillEllipse(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight); NS_IMETHOD DrawArc(const nsRect& aRect, float aStartAngle, float aEndAngle); NS_IMETHOD DrawArc(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight, float aStartAngle, float aEndAngle); NS_IMETHOD FillArc(const nsRect& aRect, float aStartAngle, float aEndAngle); NS_IMETHOD FillArc(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight, float aStartAngle, float aEndAngle); NS_IMETHOD GetWidth(char aC, nscoord &aWidth); NS_IMETHOD GetWidth(PRUnichar aC, nscoord &aWidth, PRInt32 *aFontID = nsnull); NS_IMETHOD GetWidth(const nsString& aString, nscoord &aWidth, PRInt32 *aFontID = nsnull); NS_IMETHOD GetWidth(const char* aString, nscoord& aWidth); NS_IMETHOD GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth); NS_IMETHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord &aWidth, PRInt32 *aFontID = nsnull); NS_IMETHOD GetTextDimensions(const char* aString, PRUint32 aLength, nsTextDimensions& aDimensions); NS_IMETHOD GetTextDimensions(const PRUnichar* aString, PRUint32 aLength, nsTextDimensions& aDimensions, PRInt32* aFontID = nsnull); #if defined(_WIN32) || defined(XP_OS2) || defined(MOZ_X11) || defined(XP_BEOS) NS_IMETHOD GetTextDimensions(const char* aString, PRInt32 aLength, PRInt32 aAvailWidth, PRInt32* aBreaks, PRInt32 aNumBreaks, nsTextDimensions& aDimensions, PRInt32& aNumCharsFit, nsTextDimensions& aLastWordDimensions, PRInt32* aFontID = nsnull); NS_IMETHOD GetTextDimensions(const PRUnichar* aString, PRInt32 aLength, PRInt32 aAvailWidth, PRInt32* aBreaks, PRInt32 aNumBreaks, nsTextDimensions& aDimensions, PRInt32& aNumCharsFit, nsTextDimensions& aLastWordDimensions, PRInt32* aFontID = nsnull); #endif NS_IMETHOD DrawString(const char *aString, PRUint32 aLength, nscoord aX, nscoord aY, const nscoord* aSpacing = nsnull); NS_IMETHOD DrawString(const PRUnichar *aString, PRUint32 aLength, nscoord aX, nscoord aY, PRInt32 aFontID = -1, const nscoord* aSpacing = nsnull); NS_IMETHOD DrawString(const nsString& aString, nscoord aX, nscoord aY, PRInt32 aFontID = -1, const nscoord* aSpacing = nsnull); NS_IMETHOD CopyOffScreenBits(nsIDrawingSurface *aSrcSurf, PRInt32 aSrcX, PRInt32 aSrcY, const nsRect &aDestBounds, PRUint32 aCopyFlags); NS_IMETHOD RetrieveCurrentNativeGraphicData(PRUint32 * ngd); NS_IMETHOD GetBackbuffer(const nsRect &aRequestedSize, const nsRect &aMaxSize, PRBool aForBlending, nsIDrawingSurface* &aBackbuffer); NS_IMETHOD ReleaseBackbuffer(void); NS_IMETHOD DestroyCachedBackbuffer(void); NS_IMETHOD UseBackbuffer(PRBool* aUseBackbuffer); NS_IMETHOD PushTranslation(PushedTranslation* aState); NS_IMETHOD PopTranslation(PushedTranslation* aState); #ifdef MOZ_MATHML NS_IMETHOD GetBoundingMetrics(const char* aString, PRUint32 aLength, nsBoundingMetrics& aBoundingMetrics); NS_IMETHOD GetBoundingMetrics(const PRUnichar* aString, PRUint32 aLength, nsBoundingMetrics& aBoundingMetrics, PRInt32* aFontID); #endif // MOZ_MATHML NS_IMETHOD DrawImage(imgIContainer *aImage, const nsRect &aSrcRect, const nsRect &aDestRect); NS_IMETHOD DrawTile(imgIContainer *aImage, nscoord aXOffset, nscoord aYOffset, const nsRect * aTargetRect); NS_IMETHOD SetRightToLeftText(PRBool aIsRTL) { return NS_OK; } NS_IMETHOD GetClusterInfo(const PRUnichar *aText, PRUint32 aLength, PRUint8 *aClusterStarts); virtual PRInt32 GetPosition(const PRUnichar *aText, PRUint32 aLength, nsPoint aPt); NS_IMETHOD GetRangeWidth(const PRUnichar *aText, PRUint32 aLength, PRUint32 aStart, PRUint32 aEnd, PRUint32 &aWidth); NS_IMETHOD GetRangeWidth(const char *aText, PRUint32 aLength, PRUint32 aStart, PRUint32 aEnd, PRUint32 &aWidth); NS_IMETHOD RenderEPS(const nsRect& aRect, FILE *aDataFile); // Cairo specific stuff cairo_t *GetCairo() { return mCairo; } nsTransform2D& CurrentTransform(); void TransformCoord (nscoord *aX, nscoord *aY); protected: PRBool DoCairoDrawPolygon(const nsPoint aPoints[], PRInt32 aNumPoints); void DoCairoDrawEllipse (double aX, double aY, double aWidth, double aHeight); void DoCairoDrawArc (double aX, double aY, double aWidth, double aHeight, double aStartAngle, double aEndAngle); void DoCairoClip (); nsCOMPtr mDeviceContext; nsCOMPtr mWidget; // we need to manage our own clip region (since we can't get at // the old one from cairo) nsCOMPtr mClipRegion; nsCOMPtr mFontMetrics; nsLineStyle mLineStyle; nscolor mColor; cairo_t *mCairo; nsCOMPtr mDrawingSurface; nsCOMPtr mOffscreenSurface; nsCOMPtr mBackBufferSurface; // for handing out to people void UpdateTempTransformMatrix(); nsTransform2D mTempTransform; }; #endif // NSCAIRORENDERINGCONTEXT__H__