/*

File: MyDocument.m

Abstract: NSDocument subclass. Displays a QTMovieView with a movie in

          the main window. Creates an overlay window which will be 

          attached as a child window to our main window. We will create

          it directly on top of our main window, so when we draw things

          they will appear on top of our playing movie.

Version: 1.1

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*/

#import "MyDocument.h"

@implementation MyDocument

- (id)init

{

    self = [super init];

    if (self) {

        // Add your subclass-specific initialization here.

        // If an error occurs here, send a [self release] message and return nil.

    }

    return self;

}

//////////

//

// performAnimation

//

// Called by our timer to keep our animation

// going. We simply mark our animation NSView

// as needing display, which will cause the

// drawRect routine for the view to be called.

//

//////////

- (void)performAnimation:(NSTimer *)aTimer 

{

    // mark our animation NSView as needing display

    [myAnimationView setNeedsDisplay:YES];

}

- (NSString *)windowNibName

{

    // Override returning the nib file name of the document

    // If you need to use a subclass of NSWindowController 

    // or if your document supports multiple NSWindowControllers, 

    // you should remove this method and override -makeWindowControllers 

    // instead.

    return @"MyDocument";

}

//

// windowControllerDidLoadNib

//

// Be notified that a window controller will or did load a nib with this 

// document as the nib file's owner. 

//

// We will use this opportunity to instantiate a document with either

// a default movie or the movie previously set with setFileURL:

//

- (void)windowControllerDidLoadNib:(NSWindowController *) aController

{

    [super windowControllerDidLoadNib:aController];

    // If movie wasn't chosen via File menu then instantiate a default one.

    if (!mMovie)

    {

        // Use the project default movie to instantiate a QTMovie.

        NSString *path = [[NSBundle mainBundle] pathForResource: @"Sample" ofType:@"mov"];

        mMovie = [QTMovie movieWithFile:path error:nil];

        [mMovie retain];

        // Mark the movie as not editable

        [mMovie setAttribute:[NSNumber numberWithBool:NO] forKey:QTMovieEditableAttribute];

    }

    // Set the QTMovie on the View for display.

    [mMovieView setMovie:mMovie];

    // Hide the window's resize indicator so it does not

    // interfere with the movie controller.

    [[mMovieView window] setShowsResizeIndicator:NO];

    // NOTE: the following code to move the window to the

    // front of the screen list is necessary on Mac OS X 10.4 

    // Tiger to ensure the overlay window is drawn at the 

    // correct origin when created (see below)

    [[mMovieView window] makeKeyAndOrderFront:self];

    NSPoint baseOrigin, screenOrigin;

    baseOrigin = NSMakePoint([mMovieView frame].origin.x,

                                [mMovieView frame].origin.y);

    // convert our QTMovieView coords from local coords to screen coords

    // which we'll use when creating our NSWindow below

    screenOrigin = [[mMovieView window] convertBaseToScreen:baseOrigin];

    // Create an overlay window which will be attached as a child 

    // window to our main window. We will create it directly on top 

    // of our main window, so when we draw things they will appear

    // on top of our playing movie  

    overlayWindow=[[NSWindow alloc] initWithContentRect:NSMakeRect(screenOrigin.x,screenOrigin.y,

        [mMovieView frame].size.width,

        [mMovieView frame].size.height) 

        styleMask:NSBorderlessWindowMask 

        backing:NSBackingStoreBuffered 

        defer:YES];

    [overlayWindow setOpaque:NO];

    [overlayWindow setHasShadow:YES];

    // specify we can click through the to

    // the window underneath.

    [overlayWindow setIgnoresMouseEvents:YES];

    [overlayWindow setAlphaValue:0.3];

    NSRect  movieViewBounds, subViewRect;

    movieViewBounds = [mMovieView bounds];

    // our imaging NSView will occupy the upper portion

    // of our underlying QTMovieView space

    subViewRect = NSMakeRect(movieViewBounds.origin.x,

                                movieViewBounds.origin.y + movieViewBounds.size.height/2,

                                movieViewBounds.size.width,

                                movieViewBounds.size.height/2);

    // create a subView for drawing images

    myImageView = [[ImageView alloc] initWithFrame:subViewRect];

    [[overlayWindow contentView] addSubview:myImageView];

    // our animation NSView will occupy the lower portion

    // of our underlying QTMovieView space

    subViewRect = NSMakeRect(movieViewBounds.origin.x,

                                movieViewBounds.origin.y,

                                movieViewBounds.size.width,

                                movieViewBounds.size.height/2);

    // create a subview for performing animation

    myAnimationView = [[AnimationView alloc] initWithFrame:subViewRect];

    [[overlayWindow contentView] addSubview:myAnimationView];

    [overlayWindow orderFront:self];

    // add our overlay window as a child window of our main window

    [[mMovieView window] addChildWindow:overlayWindow ordered:NSWindowAbove];

    // mark our image NSView as needing display - this will cause its

    // drawRect routine to get invoked

    [myImageView setNeedsDisplay:YES];

    // We schedule a timer with a 0 time interval so that it will be called

    // as often as possible.  In performAnimation: we mark our animation NSView

    // as needing display.

    drawTimer = [[NSTimer scheduledTimerWithTimeInterval:0.0 

        target:self selector:@selector(performAnimation:) 

        userInfo:nil 

        repeats:YES] retain];

}

//

// readFromURL

//

// Sets the contents of this document by reading from a 

// file or file package, of a specified type, located by a URL

// and return YES if successful.

//

- (BOOL)readFromURL:(NSURL *)absoluteURL ofType:(NSString *)typeName error:(NSError **)outError

{

    mMovie = [QTMovie movieWithURL:absoluteURL error:NULL];

    if (mMovie)

    {

        [mMovie retain];

        // Mark the movie is "editable", so any editing operations, such as like cut, copy, paste will work.

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

        return YES;

    }

    return NO;

}

//

// validateMenuItem

//

// Enable/Disable menu items as appropriate 

// 

// 

- (BOOL)validateMenuItem:(NSMenuItem *)menuItem {

    // A few menu item's names change between starting with "Show" and "Hide."

    SEL action = [menuItem action];

    if ((action==@selector(saveDocument:)) || (action==@selector(saveDocumentAs:)) || (action==@selector(printDocument:))

        || (action==@selector(runPageLayout:)) || (action==@selector(revertDocumentToSaved:)) ||

        (action==@selector(cut:)) || (action==@selector(copy:))) 

    {

        return NO;

    }

    else

    {

        return YES;

    }

}

//

// dealloc

//

// Perform cleanup

//

-(void)dealloc

{

    if (mMovie)

    {

        // remove timer

        [drawTimer invalidate];

        // free the movie

        [mMovie release];

    }

    [super dealloc];

}

@end