fpspreadsheet: Fix severe speed issue in WorksheetGrid (unnecessarily seeking last sheet column in DrawRow, needed for cell text overflow).

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@4039 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/fpspreadsheet/examples/visual/fpsctrls_no_install/demo_ctrls.lpi

@@ -59,6 +59,13 @@
       <OtherUnitFiles Value="..\..\.."/>
       <UnitOutputDirectory Value="..\..\lib\$(TargetCPU)-$(TargetOS)"/>
     </SearchPaths>
+    <Linking>
+      <Options>
+        <Win32>
+          <GraphicApplication Value="True"/>
+        </Win32>
+      </Options>
+    </Linking>
   </CompilerOptions>
   <Debugging>
     <Exceptions Count="3">

components/fpspreadsheet/examples/visual/fpsctrls_no_install/main.pas

@@ -7,7 +7,7 @@ interface
 uses
   Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs,
   StdCtrls, ComCtrls, ExtCtrls, Grids, Buttons, Menus, ActnList, StdActns,
-  fpstypes, fpspreadsheet, fpspreadsheetctrls, fpSpreadsheetGrid, fpsActions;
+  fpsTypes, fpSpreadsheet, fpSpreadsheetCtrls, fpSpreadsheetGrid, fpsActions;
 
 type
 

components/fpspreadsheet/fpspreadsheet.pas

@@ -98,9 +98,9 @@ type
     FLeftPaneWidth: Integer;
     FTopPaneHeight: Integer;
     FOptions: TsSheetOptions;
-    FLastFoundCell: PCell;
+//    FLastFoundCell: PCell;
-    FLastFoundRow: Cardinal;
+//    FLastFoundRow: Cardinal;
-    FLastFoundCol: Cardinal;
+//    FLastFoundCol: Cardinal;
     FFirstRowIndex: Cardinal;
     FFirstColIndex: Cardinal;
     FLastRowIndex: Cardinal;
@@ -1108,9 +1108,9 @@ begin
   FActiveCellRow := Cardinal(-1);
   FActiveCellCol := Cardinal(-1);
 
-  FLastFoundCell := nil;
+{  FLastFoundCell := nil;
   FLastFoundRow := Cardinal(-1);
-  FLastFoundCol := Cardinal(-1);
+  FLastFoundCol := Cardinal(-1);}
 
   FOptions := [soShowGridLines, soShowHeaders];
 end;
@@ -2085,7 +2085,7 @@ begin
     FLastFoundRow := ARow;
     FLastFoundCol := ACol;
   end;
-  }
+}
 end;
 
 {@@ ----------------------------------------------------------------------------

components/fpspreadsheet/fpspreadsheetctrls.pas

@@ -816,30 +816,22 @@ end;
 -------------------------------------------------------------------------------}
 procedure TsWorkbookSource.InternalLoadFromFile(AFileName: string;
   AAutoDetect: Boolean; AFormat: TsSpreadsheetFormat; AWorksheetIndex: Integer = 0);
-var
-  t: TTime;
 begin
   // Create a new empty workbook
-  t := now;
   InternalCreateNewWorkbook;
-  DebugLn(Format('[Timer] Create workbook: %.3f sec', [(now-t)*24*3600]));
 
   DisableControls;
   try
-    t := Now;
     // Read workbook from file and get worksheet
     if AAutoDetect then
       FWorkbook.ReadFromFile(AFileName)
     else
       FWorkbook.ReadFromFile(AFileName, AFormat);
-    DebugLn(Format('[Timer] Read file: %.3f sec', [(now-t)*24*3600]))
   finally
     EnableControls;
   end;
 
-  t := now;
   SelectWorksheet(FWorkbook.GetWorkSheetByIndex(AWorksheetIndex));
-  DebugLn(Format('[Timer] Select worksheet: %.3f sec', [(now-t)*24*3600]));
 
   // If required, display loading error message
   if FWorkbook.ErrorMsg <> '' then

components/fpspreadsheet/fpspreadsheetgrid.pas

@@ -1454,7 +1454,6 @@ var
   tmp: Integer = 0;
 begin
   inherited;
-
   Canvas.SaveHandleState;
   try
     // Avoid painting into the header cells
@@ -1463,15 +1462,12 @@ begin
       ColRowToOffset(True, True, FixedCols-1, tmp, cliprect.Left);
     if FixedRows > 0 then
       ColRowToOffset(False, True, FixedRows-1, tmp, cliprect.Top);
-
     DrawFrozenPaneBorders(clipRect);
 
     rgn := CreateRectRgn(cliprect.Left, cliprect.top, cliprect.Right, cliprect.Bottom);
     SelectClipRgn(Canvas.Handle, Rgn);
-
     DrawCellBorders;
     DrawSelection;
-
     DeleteObject(rgn);
   finally
     Canvas.RestoreHandleState;
@@ -1770,7 +1766,7 @@ end;
 procedure TsCustomWorksheetGrid.DrawRow(ARow: Integer);
 var
   gds: TGridDrawState;
-  sr, sr1,sc1,sr2,sc2: Cardinal;                        // sheet row/column
+  sr, sr1,sc1,sr2,sc2, scLastUsed: Cardinal;                // sheet row/column
   gr, gc, gcNext, gcLast, gc1, gc2, gcLastUsed: Integer;    // grid row/column
   i: Integer;
   rct, saved_rct, temp_rct, commentcell_rct: TRect;
@@ -1835,11 +1831,13 @@ begin
     exit;
   end;
 
+  scLastused := Worksheet.GetLastColIndex;
   sr := GetWorksheetRow(ARow);
 
   // Draw columns in this row
   with GCache.VisibleGrid do
   begin
+    gcLast := Right;
     gc := Left;
 
     // Because of possible cell overflow from cells left of the visible range
@@ -1873,7 +1871,7 @@ begin
     gcLast := Right;
     if FTextOverflow and (sr <> Cardinal(-1)) and Assigned(Worksheet) then
     begin
-      gcLastUsed := GetGridCol(Worksheet.GetLastOccupiedColIndex);
+      gcLastUsed := GetGridCol(scLastUsed);
       while (gcLast < ColCount-1) and (gcLast < gcLastUsed) do begin
         inc(gcLast);
         cell := Worksheet.FindCell(sr, GetWorksheetCol(gcLast));
@@ -3338,8 +3336,6 @@ end;
 -------------------------------------------------------------------------------}
 procedure TsCustomWorksheetGrid.LoadFromSpreadsheetFile(AFileName: string;
   AFormat: TsSpreadsheetFormat; AWorksheetIndex: Integer);
-var
-  t: TTime;
 begin
   if FOwnsWorkbook then
     FreeAndNil(FOwnedWorkbook);
@@ -3350,17 +3346,9 @@ begin
   begin
     BeginUpdate;
     try
-      t := now;
       CreateNewWorkbook;
-      DebugLn(Format('[Timer] Create workbook: %.3f sec', [(now - t)*24*3600]));
-
-      t := now;
       Workbook.ReadFromFile(AFileName, AFormat);
-      DebugLn(Format('[Timer] Read file: %.3f sec', [(now - t)*24*3600]));
-
-      t := now;
       LoadFromWorksheet(Workbook.GetWorksheetByIndex(AWorksheetIndex));
-      DebugLn(Format('[Timer] Load into grid: %.3f sec', [(now - t)*24*3600]));
     finally
       EndUpdate;
     end;
@@ -3376,8 +3364,6 @@ end;
 -------------------------------------------------------------------------------}
 procedure TsCustomWorksheetGrid.LoadFromSpreadsheetFile(AFileName: string;
   AWorksheetIndex: Integer);
-var
-  t: TTime;
 begin
   if FOwnsWorkbook then
     FreeAndNil(FOwnedWorkbook);
@@ -3388,17 +3374,9 @@ begin
   begin
     BeginUpdate;
     try
-      t := now;
       CreateNewWorkbook;
-      DebugLn(Format('[Timer] Create workbook: %.3f sec', [(now - t)*24*3600]));
-
-      t := now;
       Workbook.ReadFromFile(AFilename);
-      DebugLn(Format('[Timer] Read file: %.3f sec', [(now - t)*24*3600]));
-
-      t := now;
       LoadFromWorksheet(Workbook.GetWorksheetByIndex(AWorksheetIndex));
-      DebugLn(Format('[Timer] Load into grid: %.3f sec', [(now - t)*24*3600]));
     finally
       EndUpdate;
     end;
@@ -3678,12 +3656,12 @@ end;
 
   @param   AFileName           Name of the file to which the workbook is to be
                                saved
-                              If the file format is not known is is written
+                               If the file format is not known it is written
                                as BIFF8/XLS.
   @param   AOverwriteExisting  If this file already exists it is overwritten if
                                AOverwriteExisting = true, or an exception is
                                raised if AOverwriteExisting = false.
-}
+-------------------------------------------------------------------------------}
 procedure TsCustomWorksheetGrid.SaveToSpreadsheetFile(AFileName: String;
   AOverwriteExisting: Boolean = true);
 begin