added decoration metrics api

gfx/src/mac/nsFontMetricsMac.cpp

@@ -283,6 +283,22 @@ nsFontMetricsMac :: GetSubscriptOffset(nscoord& aResult)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsFontMetricsMac :: GetStrikeout(nscoord& aOffset, nscoord& aSize)
+{
+  aOffset = 0; /* XXX */
+  aSize = 0;  /* XXX */
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsFontMetricsMac :: GetUnderline(nscoord& aOffset, nscoord& aSize)
+{
+  aOffset = 0; /* XXX */
+  aSize = 0;  /* XXX */
+  return NS_OK;
+}
+
 NS_IMETHODIMP nsFontMetricsMac :: GetWidth(char ch, nscoord &aWidth)
 {
   char buf[1];

gfx/src/mac/nsFontMetricsMac.h

@@ -46,6 +46,8 @@ public:
   NS_IMETHOD  GetXHeight(nscoord& aResult);
   NS_IMETHOD  GetSuperscriptOffset(nscoord& aResult);
   NS_IMETHOD  GetSubscriptOffset(nscoord& aResult);
+  NS_IMETHOD  GetStrikeout(nscoord& aOffset, nscoord& aSize);
+  NS_IMETHOD  GetUnderline(nscoord& aOffset, nscoord& aSize);
   NS_IMETHOD  GetWidth(char aC, nscoord &aWidth);
   NS_IMETHOD  GetWidth(PRUnichar aC, nscoord &aWidth);
   NS_IMETHOD  GetWidth(const nsString& aString, nscoord &aWidth);

gfx/src/motif/nsFontMetricsUnix.cpp

@@ -293,6 +293,22 @@ nsFontMetricsUnix :: GetSubscriptOffset(nscoord& aResult)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsFontMetricsUnix :: GetStrikeout(nscoord& aOffset, nscoord& aSize)
+{
+  aOffset = 0; /* XXX */
+  aSize = 0;  /* XXX */
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsFontMetricsUnix :: GetUnderline(nscoord& aOffset, nscoord& aSize)
+{
+  aOffset = 0; /* XXX */
+  aSize = 0;  /* XXX */
+  return NS_OK;
+}
+
 NS_IMETHODIMP nsFontMetricsUnix :: GetWidth(char ch, nscoord &aWidth)
 {
   char buf[1];

gfx/src/motif/nsFontMetricsUnix.h

@@ -48,6 +48,8 @@ public:
   NS_IMETHOD  GetXHeight(nscoord& aResult);
   NS_IMETHOD  GetSuperscriptOffset(nscoord& aResult);
   NS_IMETHOD  GetSubscriptOffset(nscoord& aResult);
+  NS_IMETHOD  GetStrikeout(nscoord& aOffset, nscoord& aSize);
+  NS_IMETHOD  GetUnderline(nscoord& aOffset, nscoord& aSize);
   NS_IMETHOD  GetWidth(char aC, nscoord &aWidth);
   NS_IMETHOD  GetWidth(PRUnichar aC, nscoord &aWidth);
   NS_IMETHOD  GetWidth(const nsString& aString, nscoord &aWidth);