/*

     File: Controller.m 

 Abstract: Main controller object for this sample. 

  Version: 1.1 

 Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple 

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 terms, and your use, installation, modification or redistribution of 

 this Apple software constitutes acceptance of these terms.  If you do 

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 redistribute this Apple software. 

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 license, under Apple's copyrights in this original Apple software (the 

 "Apple Software"), to use, reproduce, modify and redistribute the Apple 

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 provided that if you redistribute the Apple Software in its entirety and 

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 Neither the name, trademarks, service marks or logos of Apple Inc. may 

 be used to endorse or promote products derived from the Apple Software 

 without specific prior written permission from Apple.  Except as 

 expressly stated in this notice, no other rights or licenses, express or 

 implied, are granted by Apple herein, including but not limited to any 

 patent rights that may be infringed by your derivative works or by other 

 works in which the Apple Software may be incorporated. 

 The Apple Software is provided by Apple on an "AS IS" basis.  APPLE 

 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION 

 THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS 

 FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND 

 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 

 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL 

 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 

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 */

#import "Controller.h"

#import "TrackBall.h"

#import "OverlayWindow.h"

@implementation Controller

- (NSBackgroundStyle)backgroundStyleForImage:(NSImage *)image {

    return NSBackgroundStyleLowered;

}

- (void)loadImage:(NSImage *)image {

    [image retain];

    [loadedImage release];

    loadedImage = image;

    [panorama setValue:image forInputKey:@"Image"];

    [trackBall setBackgroundStyle:[self backgroundStyleForImage:image]];

}

- (void)positionTrackBallWindow {

    // Position the trackBallWindow centered at the bottom of the panorama window.

    // All these calculations are in screen coordinates.

    [trackBallWindow setFrameOrigin:[[panorama window] frame].origin];

    NSSize contentSize = [panorama frame].size;

    NSSize trackballSize = NSMakeSize(contentSize.width / 3, contentSize.height / 3);

    [trackBall setFrame:(NSRect){NSZeroPoint, trackballSize}];

    [trackBallWindow setContentSize:trackballSize];

}

- (void)applicationDidFinishLaunching:(NSNotification *)note {

    [trackBall setTarget:self];

    [trackBall setAction:@selector(trackBallChanged:)];

    [trackBall setBackgroundStyle:NSBackgroundStyleLowered];

    NSWindow *panoramaWindow = [panorama window];

    [self loadImage:[NSImage imageNamed:@"Clown Fish"]];

    [panoramaWindow orderFront:self];

    trackBallWindow = [[OverlayWindow alloc] initWithContentRect:[trackBall frame] styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:NO];

    [[trackBallWindow contentView] addSubview:trackBall];

    [trackBallWindow setOpaque:NO];

    [trackBallWindow setBackgroundColor:[NSColor clearColor]];

    [trackBallWindow setIgnoresMouseEvents:NO];

    [self positionTrackBallWindow];

    [panoramaWindow addChildWindow:trackBallWindow ordered:NSWindowAbove];

    [trackBallWindow makeKeyAndOrderFront:self];

}

- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication {

    return YES;

}

- (void)trackBallChanged:(TrackBall *)sender {

    NSArray *angles = [sender objectValue];

    [panorama setValue:[angles objectAtIndex:0] forInputKey:@"X_Rotation"];

    [panorama setValue:[angles objectAtIndex:1] forInputKey:@"Y_Rotation"];

    [panorama setValue:[angles objectAtIndex:2] forInputKey:@"Z_Rotation"];

}

- (void)windowDidResize:(NSNotification *)notification {

    [self positionTrackBallWindow];

}

- (void)windowWillClose:(NSNotification *)notification {

    [trackBallWindow setContentView:nil];

    [trackBallWindow release];

}

- (IBAction)loadOtherPanoramicImage:(NSMenuItem *)sender {

    NSOpenPanel *openPanel = [NSOpenPanel openPanel];

    [openPanel setCanChooseFiles:YES];

    [openPanel setCanChooseDirectories:NO];

    [openPanel setResolvesAliases:NO];

    [openPanel setAllowsMultipleSelection:NO];

    [openPanel setMessage:@"Choose a panoramic image:"];

    [openPanel beginSheetModalForWindow:[panorama window] completionHandler:^(NSInteger result) {

        if (result == NSFileHandlingPanelOKButton) {

            NSImage *image = [[[NSImage alloc] initByReferencingURL:[openPanel URL]] autorelease];

            if (! image) NSBeep();

            else [self loadImage:image];

        }

    }];

}

@end