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

//

//  File: CIGLDenoiseViewController.m

//

// Abstract: Mediator with the OpenGL view.

//           

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//  Copyright (c) 2009, 2011 Apple Inc., All rights reserved.

//

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

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

#import "CIGLDenoiseViewController.h"

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

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

#pragma mark -

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

@implementation CIGLDenoiseViewController

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

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

#pragma mark -

#pragma mark Private - App Startup

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

- (void) awakeFromNib

{

    // Set the default path

    viewSnapshotDir = [[NSString alloc] initWithFormat:@"%@/Pictures",NSHomeDirectory()];

    // Get an instance of the Open panel

    viewSnapshotPanel = [[NSOpenPanel openPanel] retain];

    // Set open panel properties

    [viewSnapshotPanel setMessage:@"Choose destination folder for captured images"];

    [viewSnapshotPanel setCanChooseDirectories:YES];

    [viewSnapshotPanel setResolvesAliases:YES];

    [viewSnapshotPanel setCanChooseFiles:NO];

    [viewSnapshotPanel setAllowsMultipleSelection:NO];

    [viewSnapshotPanel setCanCreateDirectories:YES];

    [viewSnapshotPanel setPrompt:@"Select"];

    [viewSnapshotPanel setDirectoryURL:[NSURL fileURLWithPath:viewSnapshotDir 

                                                  isDirectory:YES]];

    // Post a notification for app termination

    [[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(glViewControllerWillTerminate:)

                                                 name:@"NSApplicationWillTerminateNotification"

                                               object:NSApp];

    // CI noise reduction filter sliders are invisible on startup

    filterControlsVisible = NO;

} // awakeFromNib

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

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

#pragma mark -

#pragma mark Private - Releasing Objects

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

- (void) cleanUpOpenGLViewController

{

    if( viewSnapshotDir )

    {

        [viewSnapshotDir release];

        viewSnapshotDir = nil;

    } // if

    if( viewSnapshotPanel )

    {

        [viewSnapshotPanel release];

        viewSnapshotPanel = nil;

    } // if

} // cleanUpOpenGLViewController

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

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

#pragma mark -

#pragma mark Public - Action - View Capture

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

- (IBAction) viewSnapshotLocation:(id)sender

{

    void (^viewSnapshotPanelHandler)(NSInteger) = ^( NSInteger resultCode )

    {

        NSAutoreleasePool *pool = [NSAutoreleasePool new];

        if( resultCode ) 

        {

            NSURL *url = [viewSnapshotPanel URL];

            if( url )

            {

                // Get the directory from the open panel

                NSString *viewSnapshotCurrentDir = [url path];

                if( viewSnapshotCurrentDir )

                {

                    [viewSnapshotCurrentDir retain];

                    [viewSnapshotDir release];

                    viewSnapshotDir = viewSnapshotCurrentDir;

                } // if

            } // if

        } // if

        [pool drain];

    };

    [viewSnapshotPanel beginSheetModalForWindow:mainWindow

                              completionHandler:viewSnapshotPanelHandler];

} // viewSnapshotLocation

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

//

// Image name with include a time stamp and formatted according to

//

//      <directory>/Image-<date>-<hour><minute><second>.jpg

//

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

- (IBAction) viewSnapshot:(id)sender

{

    // Construct a pathname for the saved image

    NSCharacterSet *separator   = [NSCharacterSet characterSetWithCharactersInString:@" :"];

    NSDate         *today       = [NSDate date];

    NSString       *todayString = [NSString stringWithFormat:@"%@",today];

    NSArray        *todayArray  = [todayString componentsSeparatedByCharactersInSet:separator];

    NSString *viewSnapshotPath = [NSString stringWithFormat:@"%@/ViewSnapshot-%@-%@%@%@.jpg",

                                  viewSnapshotDir,

                                  [todayArray objectAtIndex:0],

                                  [todayArray objectAtIndex:1],

                                  [todayArray objectAtIndex:2],

                                  [todayArray objectAtIndex:3]];

    // Read pixels from the frame buffer and save the image as JPEG at the path

    [denoiseView imageSaveAs:(CFStringRef)viewSnapshotPath 

                      UTType:kUTTypeJPEG];

} // viewSnapshot

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

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

#pragma mark -

#pragma mark Public - Action - Selecting Filters

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

- (void) filterControlIsVisible

{

    if( !filterControlsVisible )

    {

        [filterControlsBox setHidden:NO];

        filterControlsVisible = YES;

    } // if

} // filterControlIsVisible

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

- (void) filterControlIsHidden

{

    if( filterControlsVisible )

    {

        [filterControlsBox setHidden:YES];

        filterControlsVisible = NO;

    } // if

} // filterControlIsHidden

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

- (IBAction) filterSelectionChanged:(id)sender

{

    // sender is the NSPopUpButton containing filter choices.

    // We ask the sender which popup menu item is selected and

    // increment to compensate for counting from zero.

    NSInteger filterSelected = [sender indexOfSelectedItem] + 1;

    // Based on selected shader effect, we set the target to the

    // selected shader.

    switch( filterSelected ) 

    {

        case 1:

            [self filterControlIsHidden];

            break;

        default:

            [self filterControlIsVisible];

            break;

    } // switch

    [denoiseView setFilter:filterSelected];

} // filterChanged

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

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

#pragma mark -

#pragma mark Public - Action - Sliders Changed

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

- (IBAction) noiseLevelChanged:(id)sender

{

    CGFloat noiseLevel = [noiseLevelSlider floatValue];

    [denoiseView setNoiseLevel:noiseLevel];

} // noiseLevelChanged

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

- (IBAction) inputSharpnessChanged:(id)sender

{

    CGFloat sharpness = [sharpnessSlider floatValue];

    [denoiseView setSharpness:sharpness];

} // inputSharpnessChanged

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

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

#pragma mark -

#pragma mark Public - Action - Image View

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

- (IBAction) imageViewChanged:(id)sender

{

    [denoiseView updateFilter:[imageView image]];

} // imageViewChanged

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

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

#pragma mark -

#pragma mark Public - Action - Screen Mode

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

- (IBAction) screenModeChanged:(id)sender

{

    [denoiseView setFullScreenMode];

} // screenModeChanged

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

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

#pragma mark -

#pragma mark Private - Notification

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

//

// It's important to clean up our rendering objects before we terminate -- 

// Cocoa will not specifically release everything on application termination, 

// so we explicitly call our clean up routine ourselves.

//

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

- (void) glViewControllerWillTerminate:(NSNotification *)notification

{

    [self cleanUpOpenGLViewController];

} // glViewControllerWillTerminate

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

@end

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

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