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nsStyleUtil.h
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00037 #ifndef nsStyleUtil_h___
00038 #define nsStyleUtil_h___
00039 
00040 #include "nsCoord.h"
00041 #include "nsPresContext.h"
00042 #include "nsILinkHandler.h" // for nsLinkState
00043 
00044 struct nsStyleBackground;
00045 
00046 enum nsFontSizeType {
00047   eFontSize_HTML     = 1,
00048   eFontSize_CSS                    = 2
00049 };
00050 
00051 
00052 // Style utility functions
00053 class nsStyleUtil {
00054 public:
00055   
00056   static float GetScalingFactor(PRInt32 aScaler);
00057 
00058   static nscoord CalcFontPointSize(PRInt32 aHTMLSize, PRInt32 aBasePointSize, 
00059                                    float aScalingFactor, nsPresContext* aPresContext,
00060                                    nsFontSizeType aFontSizeType = eFontSize_HTML);
00061 
00062   static nscoord FindNextSmallerFontSize(nscoord aFontSize, PRInt32 aBasePointSize, 
00063                                          float aScalingFactor, nsPresContext* aPresContext,
00064                                          nsFontSizeType aFontSizeType = eFontSize_HTML);
00065 
00066   static nscoord FindNextLargerFontSize(nscoord aFontSize, PRInt32 aBasePointSize, 
00067                                         float aScalingFactor, nsPresContext* aPresContext,
00068                                         nsFontSizeType aFontSizeType = eFontSize_HTML);
00069 
00070   static PRInt32 ConstrainFontWeight(PRInt32 aWeight);
00071 
00072   static PRBool IsHTMLLink(nsIContent *aContent, nsIAtom *aTag, nsPresContext *aPresContext, nsLinkState *aState);
00073   static PRBool IsSimpleXlink(nsIContent *aContent, nsPresContext *aPresContext, nsLinkState *aState);
00074 
00075  static PRBool DashMatchCompare(const nsAString& aAttributeValue,
00076                                 const nsAString& aSelectorValue,
00077                                 const nsStringComparator& aComparator);
00078                                 
00079   static void EscapeCSSString(const nsString& aString, nsAString& aReturn);
00080 
00081 };
00082 
00083 
00084 #endif /* nsStyleUtil_h___ */