blitz-research#490 : Fix for HtmlView being slow with large pages

Author: seyhajin

modules/mojox/htmlview.monkey2

@@ -124,11 +124,11 @@ Class HtmlView Extends ScrollableView
 		If Not _document Return
 
 		Local clip:litehtml.position
-		
-		clip.x=canvas.Scissor.X
-		clip.y=canvas.Scissor.Y
-		clip.width=canvas.Scissor.Width
-		clip.height=canvas.Scissor.Height
+
+		clip.x=VisibleRect.X           ' Draw only visible rect, not the
+		clip.y=VisibleRect.Y           ' whole virtual page.
+		clip.width=VisibleRect.Width   ' *Fixes* slow scrolling with large pages.
+		clip.height=VisibleRect.Height '
 
 		_document.draw( canvas,0,0,Varptr clip )
 	End