llwindowmacosx-objc.mm

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#include <AppKit/AppKit.h>

/*
 * These functions are broken out into a separate file because the
 * objective-C typedef for 'BOOL' conflicts with the one in
 * llcommon/stdtypes.h.  This makes it impossible to use the standard
 * linden headers with any objective-C++ source.
 */

#include "llwindowmacosx-objc.h"

void setupCocoa()
{
        static bool inited = false;
        
        if(!inited)
        {
                NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
                
                // This is a bit of voodoo taken from the Apple sample code "CarbonCocoa_PictureCursor":
                //   http://developer.apple.com/samplecode/CarbonCocoa_PictureCursor/index.html
                
                //      Needed for Carbon based applications which call into Cocoa
                NSApplicationLoad();

                //      Must first call [[[NSWindow alloc] init] release] to get the NSWindow machinery set up so that NSCursor can use a window to cache the cursor image
                [[[NSWindow alloc] init] release];

                [pool release];
        }
}

CursorRef createImageCursor(const char *fullpath, int hotspotX, int hotspotY)
{
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

        // extra retain on the NSCursor since we want it to live for the lifetime of the app.
        NSCursor *cursor =
                [[[NSCursor alloc] 
                                initWithImage:
                                        [[[NSImage alloc] initWithContentsOfFile:
                                                [NSString stringWithFormat:@"%s", fullpath]
                                        ]autorelease] 
                                hotSpot:NSMakePoint(hotspotX, hotspotY)
                ]retain];       
                
        [pool release];
        
        return (CursorRef)cursor;
}

// This is currently unused, since we want all our cursors to persist for the life of the app, but I've included it for completeness.
OSErr releaseImageCursor(CursorRef ref)
{
        if( ref != NULL )
        {
                NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
                NSCursor *cursor = (NSCursor*)ref;
                [cursor release];
                [pool release];
        }
        else
        {
                return paramErr;
        }
        
        return noErr;
}

OSErr setImageCursor(CursorRef ref)
{
        if( ref != NULL )
        {
                NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
                NSCursor *cursor = (NSCursor*)ref;
                [cursor set];
                [pool release];
        }
        else
        {
                return paramErr;
        }
        
        return noErr;
}

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