/*

        File: main.m

    Abstract: Main file.

     Version: 1.1

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

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    not agree with these terms, please do not use, install, modify or

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    In consideration of your agreement to abide by the following terms, and

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

    license, under Apple's 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

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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

    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,

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    Copyright (C) 2009 Apple Inc. All Rights Reserved.

*/

#import <Cocoa/Cocoa.h>

#import <Quartz/Quartz.h>

#define kRendererEventMask (NSLeftMouseDownMask | NSLeftMouseDraggedMask | NSLeftMouseUpMask | NSRightMouseDownMask | NSRightMouseDraggedMask | NSRightMouseUpMask | NSOtherMouseDownMask | NSOtherMouseUpMask | NSOtherMouseDraggedMask | NSKeyDownMask | NSKeyUpMask | NSFlagsChangedMask | NSScrollWheelMask | NSTabletPointMask | NSTabletProximityMask)

#define kRendererFPS 60.0

@interface PlayerApplication : NSApplication <NSApplicationDelegate>

{

    NSOpenGLContext*            _openGLContext;

    QCRenderer*                 _renderer;

    NSString*                   _filePath;

    NSTimer*                    _renderTimer;

    NSTimeInterval              _startTime;

    NSSize                      _screenSize;

}

@end

@implementation PlayerApplication

- (id) init

{

    //We need to be our own delegate

    if(self = [super init])

    [self setDelegate:self];

    return self;

}

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

{

    //Let's remember the file for later

    _filePath = [filename retain];

    return YES;

}

- (void) applicationDidFinishLaunching:(NSNotification*)aNotification 

{

    GLint                           value = 1;

    NSOpenGLPixelFormatAttribute    attributes[] = {

                                                        NSOpenGLPFAFullScreen,

                                                        NSOpenGLPFAScreenMask, CGDisplayIDToOpenGLDisplayMask(kCGDirectMainDisplay),

                                                        NSOpenGLPFANoRecovery,

                                                        NSOpenGLPFADoubleBuffer,

                                                        NSOpenGLPFAAccelerated,

                                                        NSOpenGLPFADepthSize, 24,

                                                        (NSOpenGLPixelFormatAttribute) 0

                                                    };

    NSOpenGLPixelFormat*            format = [[[NSOpenGLPixelFormat alloc] initWithAttributes:attributes] autorelease];

    NSOpenPanel*                    openPanel;

    //If no composition file was dropped on the application's icon, we need to ask the user for one

    if(_filePath == nil) {

        openPanel = [NSOpenPanel openPanel];

        [openPanel setAllowsMultipleSelection:NO];

        [openPanel setCanChooseDirectories:NO];

        [openPanel setCanChooseFiles:YES];

        if([openPanel runModalForDirectory:nil file:nil types:[NSArray arrayWithObject:@"qtz"]] != NSOKButton) {

            NSLog(@"No composition file specified");

            [NSApp terminate:nil];

        }

        _filePath = [[openPanel filename] retain];

    }

    //Capture the main screen and cache its dimensions

    CGDisplayCapture(kCGDirectMainDisplay);

    CGDisplayHideCursor(kCGDirectMainDisplay);

    _screenSize.width = CGDisplayPixelsWide(kCGDirectMainDisplay);

    _screenSize.height = CGDisplayPixelsHigh(kCGDirectMainDisplay);

    //Create the fullscreen OpenGL context on the main screen (double-buffered with color and depth buffers)

    _openGLContext = [[NSOpenGLContext alloc] initWithFormat:format shareContext:nil];

    if(_openGLContext == nil) {

        NSLog(@"Cannot create OpenGL context");

        [NSApp terminate:nil];

    }

    [_openGLContext setFullScreen];

    [_openGLContext setValues:&value forParameter:kCGLCPSwapInterval];

    //Create the QuartzComposer Renderer with that OpenGL context and the specified composition file

    _renderer = [[QCRenderer alloc] initWithOpenGLContext:_openGLContext pixelFormat:format file:_filePath];

    if(_renderer == nil) {

        NSLog(@"Cannot create QCRenderer");

        [NSApp terminate:nil];

    }

    //Create a timer which will regularly call our rendering method

    _renderTimer = [[NSTimer scheduledTimerWithTimeInterval:(1.0 / (NSTimeInterval)kRendererFPS) target:self selector:@selector(_render:) userInfo:nil repeats:YES] retain];

    if(_renderTimer == nil) {

        NSLog(@"Cannot create NSTimer");

        [NSApp terminate:nil];

    }

}

- (void) renderWithEvent:(NSEvent*)event

{

    NSTimeInterval          time = [NSDate timeIntervalSinceReferenceDate];

    NSPoint                 mouseLocation;

    NSMutableDictionary*    arguments;

    //Let's compute our local time

    if(_startTime == 0) {

        _startTime = time;

        time = 0;

    }

    else

    time -= _startTime;

    //We setup the arguments to pass to the composition (normalized mouse coordinates and an optional event)

    mouseLocation = [NSEvent mouseLocation];

    mouseLocation.x /= _screenSize.width;

    mouseLocation.y /= _screenSize.height;

    arguments = [NSMutableDictionary dictionaryWithObject:[NSValue valueWithPoint:mouseLocation] forKey:QCRendererMouseLocationKey];

    if(event)

    [arguments setObject:event forKey:QCRendererEventKey];

    //Render a frame

    if(![_renderer renderAtTime:time arguments:arguments])

    NSLog(@"Rendering failed at time %.3fs", time);

    //Flush the OpenGL context to display the frame on screen

    [_openGLContext flushBuffer];

}

- (void) _render:(NSTimer*)timer

{

    //Simply call our rendering method, passing no event to the composition

    [self renderWithEvent:nil];

}

- (void) sendEvent:(NSEvent*)event

{

    //If the user pressed the [Esc] key, we need to exit

    if(([event type] == NSKeyDown) && ([event keyCode] == 0x35))

    [NSApp terminate:nil];

    //If the renderer is active and we have a meaningful event, render immediately passing that event to the composition

    if(_renderer && (NSEventMaskFromType([event type]) & kRendererEventMask))

    [self renderWithEvent:event];

    else

    [super sendEvent:event];

}

- (void) applicationWillTerminate:(NSNotification*)aNotification 

{

    //Stop the timer

    [_renderTimer invalidate];

    [_renderTimer release];

    //Destroy the renderer

    [_renderer release];

    //Destroy the OpenGL context

    [_openGLContext clearDrawable];

    [_openGLContext release];

    //Release main screen

    if(CGDisplayIsCaptured(kCGDirectMainDisplay)) {

        CGDisplayShowCursor(kCGDirectMainDisplay);

        CGDisplayRelease(kCGDirectMainDisplay);

    }

    //Release path

    [_filePath release];

}

@end

int main(int argc, const char *argv[])

{

    return NSApplicationMain(argc, argv);

}