calc56: #i113139# various performance improvements for 1MB rows, especially with large hidden segments

1 files changed, 18 insertions, 0 deletions

diff --git a/sc/source/ui/inc/viewdata.hxx b/sc/source/ui/inc/viewdata.hxx
index 106d196a8175..fb9c674a4488 100644
--- a/sc/source/ui/inc/viewdata.hxx
+++ b/sc/source/ui/inc/viewdata.hxx
@@ -482,6 +482,24 @@ public:
     BOOL            IsSelCtrlMouseClick() { return bSelCtrlMouseClick; }
 
     static inline long ToPixel( USHORT nTwips, double nFactor );
+
+    /** while (rScrY <= nEndPixels && rPosY <= nEndRow) add pixels of row
+        heights converted with nPPTY to rScrY, optimized for row height
+        segments. Upon return rPosY is the last row evaluated <= nEndRow, rScrY
+        may be > nEndPixels!
+     */
+    static void     AddPixelsWhile( long & rScrY, long nEndPixels,
+                                    SCROW & rPosY, SCROW nEndRow, double nPPTY,
+                                    const ScDocument * pDoc, SCTAB nTabNo );
+
+    /** while (rScrY <= nEndPixels && rPosY >= nStartRow) add pixels of row
+        heights converted with nPPTY to rScrY, optimized for row height
+        segments. Upon return rPosY is the last row evaluated >= nStartRow,
+        rScrY may be > nEndPixels!
+     */
+    static void     AddPixelsWhileBackward( long & rScrY, long nEndPixels,
+                                    SCROW & rPosY, SCROW nStartRow, double nPPTY,
+                                    const ScDocument * pDoc, SCTAB nTabNo );
 };