bug 27164; added new font height APIs for PostScript module

gfx/src/ps/nsFontMetricsPS.cpp

@@ -195,6 +195,10 @@ float offset;
   mDescent = -(NSToCoordRound(offset));
 
   mLeading = 0;
+  mEmHeight = mHeight;
+  mEmAscent = mAscent;
+  mEmDescent = mDescent;
+  mMaxHeight = mHeight;
   mMaxAscent = mAscent;
   mMaxDescent = mDescent;
   mMaxAdvance = mHeight;
@@ -279,6 +283,46 @@ nsFontMetricsPS :: GetLeading(nscoord &aLeading)
   return NS_OK;
 }
 
+/** ---------------------------------------------------
+ *  See documentation in nsFontMetricsPS.h
+ */
+NS_IMETHODIMP
+nsFontMetricsPS :: GetEmHeight(nscoord &aHeight)
+{
+  aHeight = mEmHeight;
+  return NS_OK;
+}
+
+/** ---------------------------------------------------
+ *  See documentation in nsFontMetricsPS.h
+ */
+NS_IMETHODIMP
+nsFontMetricsPS :: GetEmAscent(nscoord &aAscent)
+{
+  aAscent = mEmAscent;
+  return NS_OK;
+}
+
+/** ---------------------------------------------------
+ *  See documentation in nsFontMetricsPS.h
+ */
+NS_IMETHODIMP
+nsFontMetricsPS :: GetEmDescent(nscoord &aDescent)
+{
+  aDescent = mEmDescent;
+  return NS_OK;
+}
+
+/** ---------------------------------------------------
+ *  See documentation in nsFontMetricsPS.h
+ */
+NS_IMETHODIMP
+nsFontMetricsPS :: GetMaxHeight(nscoord &aHeight)
+{
+  aHeight = mMaxHeight;
+  return NS_OK;
+}
+
 /** ---------------------------------------------------
  *  See documentation in nsFontMetricsPS.h
  *	@update 2/26/99 dwc

gfx/src/ps/nsFontMetricsPS.h

@@ -55,6 +55,10 @@ public:
 
   NS_IMETHOD  GetHeight(nscoord &aHeight);
   NS_IMETHOD  GetLeading(nscoord &aLeading);
+  NS_IMETHOD  GetEmHeight(nscoord &aHeight);
+  NS_IMETHOD  GetEmAscent(nscoord &aAscent);
+  NS_IMETHOD  GetEmDescent(nscoord &aDescent);
+  NS_IMETHOD  GetMaxHeight(nscoord &aHeight);
   NS_IMETHOD  GetMaxAscent(nscoord &aAscent);
   NS_IMETHOD  GetMaxDescent(nscoord &aDescent);
   NS_IMETHOD  GetMaxAdvance(nscoord &aAdvance);
@@ -75,6 +79,10 @@ protected:
   nscoord             mAscent;
   nscoord             mDescent;
   nscoord             mLeading;
+  nscoord             mEmHeight;
+  nscoord             mEmAscent;
+  nscoord             mEmDescent;
+  nscoord             mMaxHeight;
   nscoord             mMaxAscent;
   nscoord             mMaxDescent;
   nscoord             mMaxAdvance;