Added the DrawStdLine call. The RenderingContext now updates the mTransMatrix pointer member so the RenderingContextImpl can use this matrix.

gfx/src/mac/nsRenderingContextMac.cpp

@@ -198,6 +198,7 @@ void nsRenderingContextMac::SelectDrawingSurface(nsDrawingSurfaceMac* aSurface,
 	mCurrentSurface = aSurface;
 	aSurface->GetGrafPtr(&mPort);
 	mGS = aSurface->GetGS();
+	mTranMatrix = &(mGS->mTMatrix);
 
 	// quickdraw initialization
 	::SetPort(mPort);
@@ -308,6 +309,9 @@ NS_IMETHODIMP nsRenderingContextMac::PopState(PRBool &aClipEmpty)
 		// remove the GS object from the stack and delete it
 		mGSStack->RemoveElementAt(index);
 		sGraphicStatePool.ReleaseGS(gs);
+		
+		// make sure the matrix is pointing at the current matrix
+		mTranMatrix = &(mGS->mTMatrix);
 	}
 
 	aClipEmpty = (::EmptyRgn(mGS->mClipRegion));
@@ -862,6 +866,30 @@ NS_IMETHODIMP nsRenderingContextMac::DrawLine(nscoord aX0, nscoord aY0, nscoord
 	return NS_OK;
 }
 
+
+//------------------------------------------------------------------------
+
+NS_IMETHODIMP nsRenderingContextMac::DrawStdLine(nscoord aX0, nscoord aY0, nscoord aX1, nscoord aY1)
+{
+	StPortSetter setter(mPort);
+
+	// make the line one pixel shorter to match other platforms
+	nscoord diffX = aX1 - aX0;
+	if (diffX)
+		diffX -= (diffX > 0 ? 1 : -1);
+
+	nscoord diffY = aY1 - aY0;
+	if (diffY)
+		diffY -= (diffY > 0 ? 1 : -1);
+
+	// draw line
+	::MoveTo(aX0, aY0);
+	::Line(diffX, diffY);
+
+	return NS_OK;
+}
+
+
 //------------------------------------------------------------------------
 
 NS_IMETHODIMP nsRenderingContextMac::DrawPolyline(const nsPoint aPoints[], PRInt32 aNumPoints)

gfx/src/mac/nsRenderingContextMac.h

@@ -88,6 +88,7 @@ public:
   NS_IMETHOD CreateDrawingSurface(nsRect *aBounds, PRUint32 aSurfFlags, nsDrawingSurface &aSurface);
   NS_IMETHOD DestroyDrawingSurface(nsDrawingSurface aDS);
   NS_IMETHOD DrawLine(nscoord aX0, nscoord aY0, nscoord aX1, nscoord aY1);
+  NS_IMETHOD DrawStdLine(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);