/*

File: AppController.m

Abstract: Main app controller

Version: 1.0

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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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*/ 

#import "AppController.h"

@interface AppController (private)

- (void)loadMovie:(NSString *)path;

@end

@implementation AppController

//--------------------------------------------------------------------------------------------------

- (void)awakeFromNib

{

    // setup the content view to use layers

    [[contentWindow contentView] setWantsLayer:YES];

    // create a root layer to contain all of our layers

    CALayer *root = [[contentWindow contentView] layer];

    // use constraint layout to allow sublayers to center themselves

    root.layoutManager = [CAConstraintLayoutManager layoutManager];

    // create a new layer which will contain all our sublayers

    mContainer = [CALayer layer];

    mContainer.bounds = root.bounds;

    mContainer.frame = root.frame;

    mContainer.position = CGPointMake(root.bounds.size.width * 0.5, root.bounds.size.height * 0.5);

    // insert layer on the bottom of the stack so it is behind the controls

    [root insertSublayer:mContainer atIndex:0];

    // make it resize when its superlayer does

    root.autoresizingMask = kCALayerWidthSizable | kCALayerHeightSizable;

    // make it resize when its superlayer does

    mContainer.autoresizingMask = kCALayerWidthSizable | kCALayerHeightSizable;

}

//--------------------------------------------------------------------------------------------------

- (void)applicationWillFinishLaunching:(NSNotification *)note

{

    mQTMovie = nil;

    // See if we have a known pathname

    NSString *moviePath = [[NSUserDefaults standardUserDefaults] stringForKey:@"MoviePath"];

    if(moviePath)

    {

        // load movie from known path

        [self loadMovie:moviePath];

    } 

    else 

    {

        // prompt user for a new movie file

        [self performSelector:@selector(openMovie:) withObject:self afterDelay:0];

    }

}

//--------------------------------------------------------------------------------------------------

- (void)openMovie:(id)sender

{

    NSOpenPanel *openPanel;

    // setup open panel dialog params

    openPanel = [NSOpenPanel openPanel];

    [openPanel setCanChooseDirectories:NO];

    [openPanel setAllowsMultipleSelection:NO];

    [openPanel setResolvesAliases:YES];

    [openPanel setCanChooseFiles:YES];

    [openPanel setTitle:@"Select a movie with audio"];

    // ask user to select a new movie file

    int rv = [openPanel runModalForTypes:nil];

    if(rv == NSFileHandlingPanelOKButton)

    {

        [self loadMovie:[openPanel filename]];

    }

}

//--------------------------------------------------------------------------------------------------

- (void)loadMovie:(NSString *)path

{

    NSError *error;

    [mQTMovie release];

    // create QTMovie object for the selected movie file

    mQTMovie = [[QTMovie movieWithFile:path error:&error] retain];

    if(mQTMovie)

    {

        // if we already have a movie layer, just set the movie on it

        if(mMovieLayer)

        {

            [mMovieLayer setMovie:mQTMovie];

            // size the layer

            mMovieLayer.frame = mContainer.frame;

        } 

        else 

        {

            // create our movie layer

            mMovieLayer = [QTMovieLayer layerWithMovie:mQTMovie];

            // size the layer

            mMovieLayer.frame = mContainer.frame;

            // scale the movie layer with the container (it will resize with the window)

            mMovieLayer.autoresizingMask = kCALayerWidthSizable | kCALayerHeightSizable;

            // insert layer on the bottom of the stack

            [mContainer insertSublayer:mMovieLayer atIndex:0];

            // center it on the mContainer

            mMovieLayer.position = mContainer.position;

        }

        // start the movie playing

        [mQTMovie play];

        // if we already have a frequency level container, just set the movie on it

        if(mLevels)

        {

            [mLevels setMovie:mQTMovie];

        } 

        else 

        {

            // create frequency level container

            mLevels = [[FrequencyLevels levelsWithMovie:mQTMovie] retain];

            // keep the levels layer at the same size

            [mLevels layer].autoresizingMask = kCALayerMinXMargin | kCALayerMaxXMargin | kCALayerMinYMargin | kCALayerMaxYMargin;

            [mContainer addSublayer:[mLevels layer]];

            [mLevels layer].position = mContainer.position;

            [mLevels toggleFreqLevels:[frequencyLevels state]];

        }

        // save movie path as default for next time

        [[NSUserDefaults standardUserDefaults] setObject:path forKey:@"MoviePath"];

        [[NSUserDefaults standardUserDefaults] synchronize];

        // set window title

        [contentWindow setTitleWithRepresentedFilename:path];

    }

}

//--------------------------------------------------------------------------------------------------

- (IBAction)setOpacity:(id)sender

{

    // set the opacity of the movie layer

    mMovieLayer.opacity = [sender floatValue];

}

//--------------------------------------------------------------------------------------------------

- (IBAction)toggleBackgroundFilter:(id)sender

{

    if ([sender state] == NSOnState)

    {

        CIFilter    *effect;

        // create effect filter

        effect = [CIFilter filterWithName:@"CIKaleidoscope"];

        // make sure all paramters are set to something reasonable

        [effect setDefaults];

        // set the center of the effect to be the center of the layer 

        [effect setValue:[CIVector vectorWithX:mMovieLayer.bounds.size.width * 0.5 Y:mMovieLayer.bounds.size.height * 0.5] forKey:kCIInputCenterKey];          

        // set the effect on the layer

        [mMovieLayer setFilters:[NSArray arrayWithObject:effect]];

    } 

    else 

    {

        // remove the effect

        [mMovieLayer setFilters:nil];

    }

}

//--------------------------------------------------------------------------------------------------

- (IBAction)toggleForegroundFilter:(id)sender

{

    if ([sender state] == NSOnState)

    {

        CIFilter    *effect;

        // create effect filter

        effect = [CIFilter filterWithName:@"CIBloom"];

        // make sure all paramters are set to something reasonable

        [effect setDefaults];

        // set the effect on the layer

        [mContainer setFilters:[NSArray arrayWithObject:effect]];

    } 

    else 

    {

        // remove the effect

        [mContainer setFilters:nil];

    }

}

//--------------------------------------------------------------------------------------------------

- (IBAction)toggleFrequenceyLevels:(id)sender

{

    [mLevels toggleFreqLevels:[sender state]];

}

//--------------------------------------------------------------------------------------------------

#pragma mark Application delegate

//--------------------------------------------------------------------------------------------------

// quit when window is closed

- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender

{

    return YES;

}

@end