/*

File:        <MovieDocument.m>

Description:  Demonstrates how to build and extend 

              a QuickTime media player app, using the new QTKit framework. 

              Originally introduced at WWDC 2004 at

              Session 214, "Programming QuickTime with Cocoa." 

              Sample code is explained in detail in 

              "QTKit Programming Guide" documentation.

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

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install, modify or redistribute this Apple software.

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subject to these terms, Apple grants you a personal, non-exclusive

license, under AppleÕs copyrights in this original Apple software (the

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

Software, with or without modifications, in source and/or binary forms;

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

without modifications, you must retain this notice and the following

text and disclaimers in all such redistributions of the Apple Software. 

Neither the name, trademarks, service marks or logos of Apple Computer,

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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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),

STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGE.

Change History (most recent first):

01/2005 - added multimedia playback capability

01/2005 - code clean up

11/2004 - added capability to open URL and stream audio/video content

10/2004 - added drawer and timer with callbacks into QuickTime procedural C API 

05/2004 - intial version introduced at WWDC 

Copyright (C) 2004 - 2007 Apple Inc. All Rights Reserved.

*/

#import "MovieDocument.h"

#import "QTKitPlayerAppDelegate.h"

#import <QTKit/QTKit.h>

#define kDefaultWidthForNonvisualMovies 320

@implementation MovieDocument

// Class methods ---

+ (id)movieDocumentWithMovie:(QTMovie *)movie

{

    return [[(MovieDocument *)[self alloc] initWithMovie:movie] autorelease];

}

// Inits ---

- (id)initWithMovie:(QTMovie *)movie

{

    [super init];

    // init

    [self setFileType:@"MovieDocument"];

    [self setMovie:movie];

    if (mMovie == nil) {

        [self release];

        self = nil;

    }

    return self;

}

- (void)dealloc

{

    [[NSNotificationCenter defaultCenter] removeObserver:self];

    [mMovieView setMovie:nil];

    [self setMovie:nil];

    [super dealloc];

}

// NSMenu validation protocol ---

- (BOOL)validateMenuItem:(NSMenuItem *)menuItem

{

    BOOL    valid = NO;

    SEL     action;

    // init

    action = [menuItem action];

    // validate

    if (action == @selector(doExport:))

        valid = (mMovie != nil);

    else if (action == @selector(doSetFillColourPanel:))

        valid = YES;

    else if (action == @selector(doShowController:)) {

        [menuItem setState:([mMovieView isControllerVisible] ? NSOnState : NSOffState)];

        valid = YES;

    } else if (action == @selector(doPreserveAspectRatio:)) {

        [menuItem setState:([mMovieView preservesAspectRatio] ? NSOnState : NSOffState)];

        valid = (mMovie != nil);

    } else if ((action == @selector(doLoop:)) && mMovie) {

        [menuItem setState:([[mMovie attributeForKey:QTMovieLoopsAttribute] boolValue] ? NSOnState : NSOffState)];

        valid = YES;

    } else if ((action == @selector(doLoopPalindrome:)) && mMovie) {

        if ([[mMovie attributeForKey:QTMovieLoopsAttribute] boolValue]) {

            [menuItem setState:([[mMovie attributeForKey:QTMovieLoopsBackAndForthAttribute] boolValue] ? NSOnState : NSOffState)];

            valid = YES;

        }

    }

    else if (action == @selector(doClone:))

        valid = (mMovie != nil);

    else if (action == @selector(selectAll:))

        valid = (mMovie != nil);

    else if (action == @selector(setSelectionToNone:))

        valid = (mMovie != nil);

    else

        valid = [super validateMenuItem:menuItem];

    return valid;

}

#pragma mark ********* Setters **************

// Setters ---

- (void)setMovie:(QTMovie *)movie

{

    [movie retain];

    [mMovie release];

    mMovie = movie;

}

#pragma mark ********* Getters **************

// Getters ---

-(QTMovie *)qtmovie

{

    return [[mMovie retain] autorelease];

}

#pragma mark ********* NSDocument overrides **************

// NSDocument overrides ---

- (NSString *)windowNibName

{

    return @"MovieDocument";

}

- (void)windowControllerDidLoadNib:(NSWindowController *)windowController

{

    // set up the movie view

    if (mMovie) {

        NSSize contentSize = [[mMovie attributeForKey:QTMovieNaturalSizeAttribute] sizeValue];

        [mMovieView setMovie:mMovie];

        if ([mMovieView isControllerVisible]) {

            contentSize.height += [mMovieView movieControllerBounds].size.height;

            if (contentSize.width == 0) {

                contentSize.width = kDefaultWidthForNonvisualMovies;

            }

        }

        [[mMovieView window] setContentSize:contentSize];

    } else

        [mMovieView setMovie:[QTMovie movie]];

    // uncomment these lines to use the QTKit's resize indicator, not NSWindow's

    // this allows all buttons in the controller bar to function as expected

    [[mMovieView window] setShowsResizeIndicator:NO];

    [mMovieView setShowsResizeIndicator:YES];

    // set the editable state

    [mMovie setAttribute:[NSNumber numberWithBool:YES] forKey:QTMovieEditableAttribute];

    // watch for movie resizings

    if (mMovie) {

        [[NSNotificationCenter defaultCenter] addObserver:self 

                                 selector:@selector(sizeWindowToMovie:) 

                                     name:QTMovieSizeDidChangeNotification 

                                   object:mMovie];

    }

}

- (BOOL)writeWithBackupToFile:(NSString *)fullDocumentPath ofType:(NSString *)type saveOperation:(NSSaveOperationType)saveOperation

{

    BOOL success = NO;

    // update/save

    if (saveOperation == NSSaveOperation)

        success = [mMovie updateMovieFile];

    else

        success = [super writeWithBackupToFile:fullDocumentPath ofType:type saveOperation:saveOperation];

    return success;

}

- (NSData *)dataRepresentationOfType:(NSString *)docType

{

    return [mMovie movieFormatRepresentation];

}

- (BOOL)readFromFile:(NSString *)fileName ofType:(NSString *)type

{

    BOOL success = NO;

    // read the movie

    if ([QTMovie canInitWithFile:fileName]) {

        [self setMovie:((QTMovie *)[QTMovie movieWithFile:fileName error:nil])];

        success = (mMovie != nil);

    }

    return success;

}

- (id)openDocumentWithContentsOfFile:(NSString *)fileName display:(BOOL)displayFlag

{

    NSDocumentController *sharedDocController = [NSDocumentController sharedDocumentController];

    MovieDocument *movieDocument = [sharedDocController documentForFileName:fileName];

    // first check whether we already have a document for this file

    if (movieDocument) 

    {   // we've got one, just bring it forward

        if (displayFlag) {

            [movieDocument showWindows];

        }

    } 

    else 

    {   // we must create a new document

    // we always create a movie document regardless of type

     //init

        movieDocument = [[[MovieDocument allocWithZone:[self zone]] initWithContentsOfFile:fileName ofType:@"mov"] autorelease];

        // set up the document

        if (movieDocument) 

    {

            // add the document

            [sharedDocController addDocument:movieDocument];

            // set up the document

            if ([sharedDocController shouldCreateUI]) {

                [movieDocument makeWindowControllers];

                if (displayFlag) {

                    [movieDocument showWindows];

                }

            }

        }

    }

    return movieDocument;

}

- (BOOL)panel:(id)sender shouldShowFilename:(NSString *)filename 

{

    BOOL isDir = NO;

    [[NSFileManager defaultManager] fileExistsAtPath:filename isDirectory:&isDir];

    if (isDir) {

        return YES;

    } else {

        return [QTMovie canInitWithFile:filename];

    }

}

- (void)openDocument:(id)sender {

    NSOpenPanel *openPanel = [NSOpenPanel openPanel];

    [openPanel setDelegate:self];

    [openPanel setAllowsMultipleSelection:NO];

    // files are filtered through the panel:shouldShowFilename: method above

    if ([openPanel runModalForTypes:nil] == NSOKButton) {

        [self openDocumentWithContentsOfFile:[[openPanel filenames] lastObject] display:YES];

    }

}

- (BOOL)application:(NSApplication *)theApplication openFile:(NSString *)filename

{

    return (nil != [self openDocumentWithContentsOfFile:filename display:YES]);

}

- (void)printShowingPrintPanel:(BOOL)showPanels

{

    NSPrintOperation *printOperation;

    // init

    printOperation = [NSPrintOperation printOperationWithView:mMovieView printInfo:[self printInfo]];

    [printOperation setShowPanels:showPanels];

    // print

    [self runModalPrintOperation:printOperation delegate:nil didRunSelector:nil contextInfo:nil];

}

- (BOOL)readFromURL:(NSURL *)url ofType:(NSString *)type

{

    BOOL success = NO;

    // read the movie

    if ([QTMovie canInitWithURL:url]) {

        [self setMovie:((QTMovie *)[QTMovie movieWithURL:url error:nil])];

        success = (mMovie != nil);

    }

    return success;

}

#pragma mark ********* NSSavePanel delegates **************

// NSSavePanel delegates ---

- (void)exportPanelDidEnd:(NSSavePanel *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo

{

    int             selectedItem;

    NSMutableDictionary *settings = nil;

    static NSArray      *exportTypes = nil;

    // init

    if (exportTypes == nil) {

        exportTypes = [[NSArray arrayWithObjects:

            [NSNumber numberWithLong:'AIFF'], [NSNumber numberWithLong:'BMPf'], [NSNumber numberWithLong:'dvc!'],

            [NSNumber numberWithLong:'FLC '], [NSNumber numberWithLong:'mpg4'], [NSNumber numberWithLong:'MooV'],

            [NSNumber numberWithLong:'embd'], nil] retain];

    }

    // export

    if (returnCode == NSOKButton) {

        // init

        selectedItem = [mExportTypePopUpButton indexOfSelectedItem];

        settings = [NSMutableDictionary dictionaryWithCapacity:5];

        [settings setObject:[NSNumber numberWithBool:YES] forKey:QTMovieExport];

        if ((selectedItem >= 0) && (selectedItem < [exportTypes count]))

            [settings setObject:[exportTypes objectAtIndex:selectedItem] forKey:QTMovieExportType];

        // export

        if (![mMovie writeToFile:[sheet filename] withAttributes:settings])

            NSRunAlertPanel(@"Error", @"Error exporting movie.", nil, nil, nil);

    }

}

#pragma mark ********* actions **************

// Actions ---

- (IBAction)doExport:(id)sender

{

    NSSavePanel *savePanel;

    // init

    savePanel = [NSSavePanel savePanel];

    // run the export sheet

    [savePanel setAccessoryView:mExportAccessoryView];

    [savePanel beginSheetForDirectory:nil file:[[self fileName] lastPathComponent] modalForWindow:mMovieWindow modalDelegate:self

        didEndSelector:@selector(exportPanelDidEnd: returnCode: contextInfo:) contextInfo:nil];

}

- (IBAction)doSetFillColourPanel:(id)sender

{

    NSColorPanel *colorPanel;

    // init

    colorPanel = [NSColorPanel sharedColorPanel];

    [colorPanel setAction:@selector(doSetFillColour:)];

    [colorPanel setTarget:self];

    [colorPanel setColor:[mMovieView fillColor]];

    // run the panel

    [colorPanel makeKeyAndOrderFront:nil];

}

- (IBAction)doSetFillColour:(id)sender

{

    // update the fill color

    [mMovieView setFillColor:[sender color]];

}

- (IBAction)doShowController:(id)sender

{

    // toggle the controller visibility

    [mMovieView setControllerVisible:([sender state] == NSOffState)];

}

- (IBAction)doPreserveAspectRatio:(id)sender

{

    // toggle the aspect ratio preservation

    [mMovieView setPreservesAspectRatio:([sender state] == NSOffState)];

}

- (IBAction)doLoop:(id)sender

{

    // toggle looping

    [mMovie setAttribute:[NSNumber numberWithBool:([sender state] == NSOffState)] forKey:QTMovieLoopsAttribute];

}

- (IBAction)doLoopPalindrome:(id)sender

{

    // toggle palindrome looping

    [mMovie setAttribute:[NSNumber numberWithBool:([sender state] == NSOffState)] forKey:QTMovieLoopsBackAndForthAttribute];

}

- (IBAction)doClone:(id)sender

{

    MovieDocument *movieDocument;

    // init

    movieDocument = [MovieDocument movieDocumentWithMovie:[[mMovie copy] autorelease]];

    // set up the document

    if (movieDocument) {

        // add the document

        [[NSDocumentController sharedDocumentController] addDocument:movieDocument];

        // set up the document

        [movieDocument makeWindowControllers];

        [movieDocument showWindows];

    }

}

- (void)sizeWindowToMovie:(NSNotification *)notification

{

    NSRect  currWindowBounds, newWindowBounds;

    NSPoint topLeft;

    static BOOL nowSizing = NO;

    if (nowSizing)

        return;

    nowSizing = YES;

    // get the current location and size of the movie window, so we can keep the top-left corner pegged, i.e. fixed

    currWindowBounds = [[mMovieView window] frame];

    topLeft.x = currWindowBounds.origin.x;

    topLeft.y = currWindowBounds.origin.y + currWindowBounds.size.height;

    NSSize contentSize = [[mMovie attributeForKey:QTMovieCurrentSizeAttribute] sizeValue];

    if ([mMovieView isControllerVisible])

    {

        // adjust for movie controller height

        contentSize.height += [mMovieView controllerBarHeight];

        // take into account size difference between movie view

        // and enclosing window

        contentSize.width += (currWindowBounds.size.width - contentSize.width);

    }

    if (contentSize.width == 0)

        contentSize.width = currWindowBounds.size.width;

    newWindowBounds = [[mMovieView window] frameRectForContentRect:NSMakeRect(0, 0, contentSize.width, contentSize.height)];

    [[mMovieView window] setFrame:NSMakeRect(topLeft.x, topLeft.y - newWindowBounds.size.height, newWindowBounds.size.width, newWindowBounds.size.height) display:YES];

    [[[NSApp delegate] inspectorWindowController] setCurrentSizeDisplay];

    nowSizing = NO;

}

#pragma mark ********* NSWindow Delegate methods **************

/* NSWindow Delegate methods */

- (void)windowDidBecomeMain:(NSNotification *)notification

{

    // Update inspector window for the current window

    [[[NSApp delegate] inspectorWindowController] updateInspectorWindowForMovie:mMovie];

}

- (void)windowDidResignMain:(NSNotification *)notification

{

    // Update inspector window for the current window

    [[[NSApp delegate] inspectorWindowController] updateInspectorWindowForMovie:mMovie];

}

@end