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nsRegressionTestFontMetrics.h
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00037 
00038 #ifndef nsRegressionTestFontMetrics_h__
00039 #define nsRegressionTestFontMetrics_h__
00040 
00041 #include "nsIFontMetrics.h"
00042 #include "nsFont.h"
00043 #include "nsString.h"
00044 #include "nsUnitConversion.h"
00045 #include "nsIDeviceContext.h"
00046 
00047 class nsRegressionTestFontMetrics : public nsIFontMetrics
00048 {
00049 public:
00050    friend nsresult NS_NewRegressionTestFontMetrics(nsIFontMetrics** aMetrics);
00051    virtual ~nsRegressionTestFontMetrics();
00052 
00053 
00054   NS_DECL_ISUPPORTS
00055   
00056   NS_IMETHOD  Init(const nsFont& aFont, nsIDeviceContext *aContext);
00057   NS_IMETHOD  Destroy();
00058 
00059   NS_IMETHOD  GetXHeight(nscoord& aResult);
00060   NS_IMETHOD  GetSuperscriptOffset(nscoord& aResult);
00061   NS_IMETHOD  GetSubscriptOffset(nscoord& aResult);
00062   NS_IMETHOD  GetStrikeout(nscoord& aOffset, nscoord& aSize);
00063   NS_IMETHOD  GetUnderline(nscoord& aOffset, nscoord& aSize);
00064 
00065   NS_IMETHOD  GetHeight(nscoord &aHeight);
00066   NS_IMETHOD  GetLeading(nscoord &aLeading);
00067   NS_IMETHOD  GetMaxAscent(nscoord &aAscent);
00068   NS_IMETHOD  GetMaxDescent(nscoord &aDescent);
00069   NS_IMETHOD  GetMaxAdvance(nscoord &aAdvance);
00070   NS_IMETHOD  GetFontHandle(nsFontHandle &aHandle);
00071   
00072   NS_METHOD GetWidth(const char aChar, nscoord& aWidth);
00073   NS_METHOD GetWidth(const PRUnichar aChar, nscoord& aWidth);
00074   NS_METHOD GetWidth(const PRUnichar *aString, PRUint32 aLength, nscoord& aWidth);
00075   NS_METHOD GetWidth(const char* aString, PRUint32 aLength, nscoord& aWidth);
00076 
00077 protected:
00078   nsRegressionTestFontMetrics();
00079   void RealizeFont();
00080 
00081   nsIDeviceContext    *mDeviceContext;
00082   nscoord             mHeight;
00083   nscoord             mAscent;
00084   nscoord             mDescent;
00085   nscoord             mLeading;
00086   nscoord             mMaxAscent;
00087   nscoord             mMaxDescent;
00088   nscoord             mMaxAdvance;
00089   nscoord             mXHeight;
00090   nscoord             mSuperscriptOffset;
00091   nscoord             mSubscriptOffset;
00092   nscoord             mStrikeoutSize;
00093   nscoord             mStrikeoutOffset;
00094   nscoord             mUnderlineSize;
00095   nscoord             mUnderlineOffset;
00096 };
00097 
00098 
00099 #endif