ControllerSaving.m

/*

File: ControllerSaving.m

Abstract: Code to implement "SaveAs" functionality to save images.

Version: 1.1

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*/

#import <Quartz/Quartz.h>
#import "Controller.h"
#import "ControllerBrowsing.h"
#import "ControllerSaving.h"


@implementation Controller(Saving)

//---------------------------------------------------------------------------------------------------------------------- 
- (NSString*)fileName
{
    return [[[self selectedImageURL] path] lastPathComponent];
}

//---------------------------------------------------------------------------------------------------------------------- 
- (NSURL*)selectedImageURL
{
    return selectedImageURL;
}

//---------------------------------------------------------------------------------------------------------------------- 
- (void)setSelectedImageURL: (NSURL*)url
{
    [self willChangeValueForKey: @"fileName"];
    [selectedImageURL release];
    selectedImageURL = [url retain];
    [self didChangeValueForKey: @"fileName"];
}

//---------------------------------------------------------------------------------------------------------------------- 
- (void) saveImageToPath: (NSString*)path
{
    NSString * newUTType = [saveOptions imageUTType];
    CGImageRef image;
    
    image = (CGImageRef)[imageView image];
    
    if (image)
    {
        NSURL *               url = [NSURL fileURLWithPath: path];
        CGImageDestinationRef dest = CGImageDestinationCreateWithURL((CFURLRef)url, (CFStringRef)newUTType, 1, NULL);
        
        if (dest)
        {
            CGImageDestinationAddImage(dest, image, (CFDictionaryRef)[saveOptions imageProperties]);
            CGImageDestinationFinalize(dest);
            CFRelease(dest);
            
            [self addFileWithPath: path];
            [imageBrowser reloadData];
            [imageBrowser setSelectionIndexes: [NSIndexSet indexSetWithIndex: [images count]-1] byExtendingSelection:NO];
        }
    } else
    {
        NSLog(@"*** saveImageToPath - no image");
    }
}

// ---------------------------------------------------------------------------------------------------------------------
- (void)savePanelDidEnd: (NSSavePanel *)sheet
             returnCode: (NSInteger)returnCode
            contextInfo: (void *)contextInfo
{
    if (returnCode == NSOKButton)
    {
        [self saveImageToPath: [sheet filename]];
    }
}

// ---------------------------------------------------------------------------------------------------------------------
- (IBAction)saveAs: (id)sender
{
    NSSavePanel *   savePanel;
    NSString *      utType;
    NSDictionary *  metaData;
    NSString *      fileName;
    
    savePanel = [NSSavePanel savePanel];

    utType = (id)CGImageSourceGetTypeWithURL((CFURLRef)[self selectedImageURL], NULL);
    if (utType)
    {
        metaData = [(IKImageView*)imageView imageProperties];
        fileName = [self fileName];
        
        saveOptions = [[IKSaveOptions alloc] initWithImageProperties: metaData
                                                         imageUTType: utType];
        
        [saveOptions addSaveOptionsAccessoryViewToSavePanel: savePanel];
        
        
        [savePanel beginSheetForDirectory: NULL
                                     file: fileName 
                           modalForWindow: [imageView window]
                            modalDelegate: self
                           didEndSelector: @selector(savePanelDidEnd:returnCode:contextInfo:) 
                              contextInfo: NULL];
    }
}
@end