Quote from Forum Archives on September 10, 2011, 10:54 am

Posted by: svanvoorst <svanvoorst@...>

This demo creates a spreadsheet with 65000 cells, each with a unique tag.

'----- start ------

/*

   Written by S. Van Voorst    {20110910}

   Demonstrates embedding a matrix in an NSView,

   which is then embedded in a ScrollView,

   which is then made the contentView of a window. 

   Creates a spreadsheet with each cell having a unique tag.

   Tab is functional.

*/

compile as "Objective-C"

if system(_sysVers) < 1060 then stop "Requires OS 10.6 or newer"

BeginCCode

{

 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init];

 [NSApplication sharedApplication];

 [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];

// ******* Menubar ******* //

  id menubar = [[NSMenu new] autorelease];

  id appMenuItem = [[NSMenuItem new] autorelease];

  [menubar addItem:appMenuItem];

  [NSApp setMainMenu:menubar];

// ******* Menu ******** //

  id appMenu = [[NSMenu new] autorelease];

  id quitMenuItem = [[[NSMenuItem alloc] initWithTitle:@"Quit"

        action:@selector(terminate:) keyEquivalent:@"q"] autorelease];

  [appMenu addItem:quitMenuItem];

  [appMenuItem setSubmenu:appMenu];

// ****** Window ******** //

 #define _wndW  330

 #define _wndH  300

 id window = [ [ NSWindow alloc ] 

                       initWithContentRect:NSMakeRect( 0, 0, _wndW, _wndH )

                       styleMask: NSClosableWindowMask | NSTitledWindowMask | NSResizableWindowMask

                       backing:NSBackingStoreBuffered

                       defer:NO];

 [window center];

 [window setTitle: @"NSScrollView with embedded matrix" ];

// create control view with a frame the size of the matrix

 NSView *ctrlView=[[NSView alloc] initWithFrame:NSMakeRect( 0, 0, 10000, 13000 )];

// ----- NSMatrix ----- //

//Use NSActionCell so that we can set tag for each

 NSActionCell *cell = [[NSActionCell alloc]init];

 [cell setBordered:YES];

 [cell setType:NSTextCellType];

 [cell setEditable:YES];

// Dimensions not critical if sizeToCells is used!

  id matrix = [[NSMatrix alloc] initWithFrame:NSMakeRect( 0, 0, 0, 0 ) 

            mode:NSTrackModeMatrix 

            prototype:cell 

            numberOfRows:650 

            numberOfColumns:100];

 [matrix setCellSize:NSMakeSize( 101, 21 )];

 [matrix setIntercellSpacing: NSMakeSize( -1, -1 )];

 [matrix sizeToCells];

 [ctrlView addSubview:matrix];

 [cell release];

 [matrix release];

 int n;

 NSArray *cellArray = [matrix cells];

 for( n = 0; n <= 64999 ; n++ )

{

  [[cellArray objectAtIndex: n ] setTitle:[NSString stringWithFormat:@"%d", n+1] ];

  [[cellArray objectAtIndex: n ] setTag: n + 1 ];

}

// create the scroll view so that it fills the entire window

 NSScrollView *scrollView = [[NSScrollView alloc] initWithFrame: [[window contentView] frame]];

 [scrollView setHasVerticalScroller:YES];

 [scrollView setHasHorizontalScroller:YES];

 [scrollView setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];

// set ctrlView as the documentView of the scroll view

 [scrollView setDocumentView:ctrlView];

// set the scrollView as the window's contentView

 [window setContentView:scrollView];

 [scrollView release];

 [window makeKeyAndOrderFront:nil];

 [NSApp activateIgnoringOtherApps:YES];

 [NSApp run];

 [pool drain];

}

EndC

'------ end -----

Steve Van Voorst

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