/**

  * $Id$

  *

  * Core Cocoa-based user interface

  *

  * Copyright (c) 2005 Nathan Keynes.

  *

  * This program is free software; you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation; either version 2 of the License, or

  * (at your option) any later version.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  */

 #include <AppKit/AppKit.h>

 #include <stdio.h>

 #include <stdlib.h>

 #include <string.h>

 #include <sys/time.h>

 #include "lxdream.h"

 #include "dreamcast.h"

 #include "dream.h"

 #include "gui.h"

 #include "cocoaui/cocoaui.h"

 void cocoa_gui_update( void );

 void cocoa_gui_start( void );

 void cocoa_gui_stop( void );

 void cocoa_gui_run_later( void );

 uint32_t cocoa_gui_run_slice( uint32_t nanosecs );

 struct dreamcast_module cocoa_gui_module = { "gui", NULL,

                   cocoa_gui_update, 

                   cocoa_gui_start, 

                   cocoa_gui_run_slice, 

                   cocoa_gui_stop, 

                   NULL, NULL };

 /**

  * Count of running nanoseconds - used to cut back on the GUI runtime

  */

 static uint32_t cocoa_gui_nanos = 0;

 static uint32_t cocoa_gui_ticks = 0;

 static struct timeval cocoa_gui_lasttv;

 static BOOL cocoa_gui_autorun = NO;

 static BOOL cocoa_gui_is_running = NO;

 @interface NSApplication (PrivateAdditions)

 - (void) setAppleMenu:(NSMenu *)aMenu;

 @end

 static void cocoa_gui_create_menu(void)

 {

     NSMenu *appleMenu, *services;

     NSMenuItem *menuItem;

     NSString *title;

     NSString *appName;

     appName = @"Lxdream";

     appleMenu = [[NSMenu alloc] initWithTitle:@""];

     /* Add menu items */

     title = [@"About " stringByAppendingString:appName];

     [appleMenu addItemWithTitle:title action:@selector(orderFrontStandardAboutPanel:) keyEquivalent:@""];

     [appleMenu addItem:[NSMenuItem separatorItem]];

     // Services Menu

     services = [[[NSMenu alloc] init] autorelease];

     [appleMenu addItemWithTitle:@"Services" action:nil keyEquivalent:@""];

     [appleMenu setSubmenu: services forItem: [appleMenu itemWithTitle: @"Services"]];

     // Hide AppName

     title = [@"Hide " stringByAppendingString:appName];

     [appleMenu addItemWithTitle:title action:@selector(hide:) keyEquivalent:@"h"];

     // Hide Others

     menuItem = (NSMenuItem *)[appleMenu addItemWithTitle:@"Hide Others" 

                                                   action:@selector(hideOtherApplications:) 

                                            keyEquivalent:@"h"];

     [menuItem setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];

     // Show All

     [appleMenu addItemWithTitle:@"Show All" action:@selector(unhideAllApplications:) keyEquivalent:@""];

     [appleMenu addItem:[NSMenuItem separatorItem]];

     // Quit AppName

     title = [@"Quit " stringByAppendingString:appName];

     [appleMenu addItemWithTitle:title action:@selector(terminate:) keyEquivalent:@"q"];

     /* Put menu into the menubar */

     menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil  keyEquivalent:@""];

     [menuItem setSubmenu: appleMenu];

     NSMenu *menu = [NSMenu new];

     [menu addItem: menuItem];

     NSMenu *gdromMenu = cocoa_gdrom_menu_new();

     NSMenu *fileMenu = [[NSMenu alloc] initWithTitle: NS_("File")];

     [fileMenu addItemWithTitle: NS_("Load Binary") action: @selector(load_binary_action:) keyEquivalent: @"b"];

     [[fileMenu addItemWithTitle: NS_("GD-Rom") action: nil keyEquivalent: @""]

       setSubmenu: gdromMenu];

     [fileMenu addItem: [NSMenuItem separatorItem]];

     [[fileMenu addItemWithTitle: NS_("Reset") action: @selector(reset_action:) keyEquivalent: @"r"]

       setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];

     [fileMenu addItemWithTitle: NS_("Pause") action: @selector(pause_action:) keyEquivalent: @"p"];

     [fileMenu addItemWithTitle: NS_("Resume") action: @selector(run_action:) keyEquivalent: @"r"];

     [fileMenu addItem: [NSMenuItem separatorItem]];

     [fileMenu addItemWithTitle: NS_("Load State") action: @selector(load_action:) keyEquivalent: @"o"];

     [fileMenu addItemWithTitle: NS_("Save State") action: @selector(save_action:) keyEquivalent: @"s"];

     menuItem = [[NSMenuItem alloc] initWithTitle:NS_("File") action: nil keyEquivalent: @""];

     [menuItem setSubmenu: fileMenu];

     [menu addItem: menuItem];

     /* Tell the application object that this is now the application menu */

     [NSApp setMainMenu: menu];

     [NSApp setAppleMenu: appleMenu];

     [NSApp setServicesMenu: services];

     /* Finally give up our references to the objects */

     [appleMenu release];

     [menuItem release];

     [menu release];

 }

 @interface LxdreamDelegate : NSObject

 @end

 @implementation LxdreamDelegate

 - (void)windowWillClose: (NSNotification *)notice

 {

     dreamcast_shutdown();

     exit(0);

 }

 - (void)windowDidBecomeMain: (NSNotification *)notice

 {

     if( cocoa_gui_autorun ) {

         cocoa_gui_autorun = NO;

         cocoa_gui_run_later();

     }

 }

 - (void) load_action: (id)sender

 {

     NSOpenPanel *panel = [NSOpenPanel openPanel];

     NSArray *fileTypes = [NSArray arrayWithObject: @"dst"];

     int result = [panel runModalForDirectory: NSHomeDirectory() file: nil types: fileTypes];

     if( result == NSOKButton && [[panel filenames] count] > 0 ) {

         NSString *filename = [[panel filenames] objectAtIndex: 0];

         dreamcast_load_state( [filename UTF8String] );

     }

 }

 - (void) save_action: (id)sender

 {

     NSSavePanel *panel = [NSSavePanel savePanel];

     [panel setRequiredFileType: @"dst"];

     int result = [panel runModalForDirectory: NSHomeDirectory() file:@""];

     if( result == NSOKButton ) {

         NSString *filename = [panel filename];

         dreamcast_save_state( [filename UTF8String] );

     }

 }

 - (void) load_binary_action: (id)sender

 {

     NSOpenPanel *panel = [NSOpenPanel openPanel];

     int result = [panel runModalForDirectory: NSHomeDirectory() file: nil types: nil];

     if( result == NSOKButton && [[panel filenames] count] > 0 ) {

         NSString *filename = [[panel filenames] objectAtIndex: 0];

         file_load_magic( [filename UTF8String] );

     }

 }

 - (void) mount_action: (id)sender

 {

     NSOpenPanel *panel = [NSOpenPanel openPanel];

     int result = [panel runModalForDirectory: NSHomeDirectory() file: nil types: nil];

     if( result == NSOKButton && [[panel filenames] count] > 0 ) {

         NSString *filename = [[panel filenames] objectAtIndex: 0];

         gdrom_mount_image( [filename UTF8String] );

     }

 }

 - (void) pause_action: (id)sender

 {

     dreamcast_stop();

 }

 - (void) reset_action: (id)sender

 {

     dreamcast_reset();

 }

 - (void) run_action: (id)sender

 {

     cocoa_gui_run_later();

 }

 - (void) run_immediate

 {

     dreamcast_run();

 }

 - (void) gdrom_list_action: (id)sender

 {

     gdrom_list_set_selection( [sender tag] );

 }

 @end

 gboolean gui_parse_cmdline( int *argc, char **argv[] )

 {

     /* If started from the finder, the first (and only) arg will look something like 

     * -psn_0_... - we want to remove this so that lxdream doesn't try to process it 

     * normally

     */

     if( *argc == 2 && strncmp((*argv)[1], "-psn_", 5) == 0 ) {

         *argc = 1;

     }

     return TRUE;

 }

 gboolean gui_init( gboolean withDebug )

 {

     dreamcast_register_module( &cocoa_gui_module );

     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

     [NSApplication sharedApplication];

     LxdreamDelegate *delegate = [[LxdreamDelegate alloc] init];

     [NSApp setDelegate: delegate];

     NSString *iconFile = [[NSBundle mainBundle] pathForResource:@"dcemu" ofType:@"gif"];

     NSImage *iconImage = [[NSImage alloc] initWithContentsOfFile: iconFile];

     [NSApp setApplicationIconImage: iconImage];   

     cocoa_gui_create_menu();

     NSWindow *window = cocoa_gui_create_main_window();

     [window makeKeyAndOrderFront: nil];

     [NSApp activateIgnoringOtherApps: YES];   

     [pool release];

 }

 void gui_main_loop( gboolean run )

 {

     if( run ) {

         cocoa_gui_autorun = YES;

     }

     cocoa_gui_is_running = YES;

 	[NSApp run];

 	cocoa_gui_is_running = NO;

 }

 void gui_update_state(void)

 {

     cocoa_gui_update();

 }

 gboolean gui_error_dialog( const char *msg, ... )

 {

     if( cocoa_gui_is_running ) {

         NSString *error_string;

         va_list args;

         va_start(args, msg);

         error_string = [[NSString alloc] initWithFormat: [NSString stringWithCString: msg] arguments: args];

         NSRunAlertPanel(@"Error in lxdream", error_string, nil, nil, nil);

         va_end(args);

         return TRUE;

     } else {

         return FALSE;

     }

 }

 void gui_update_io_activity( io_activity_type io, gboolean active )

 {

 }

 uint32_t cocoa_gui_run_slice( uint32_t nanosecs )

 {

     NSEvent *event;

     NSAutoreleasePool *pool;

     cocoa_gui_nanos += nanosecs;

     if( cocoa_gui_nanos > GUI_TICK_PERIOD ) { /* 10 ms */

         cocoa_gui_nanos -= GUI_TICK_PERIOD;

         cocoa_gui_ticks ++;

         uint32_t current_period = cocoa_gui_ticks * GUI_TICK_PERIOD;

         // Run the event loop

         pool = [NSAutoreleasePool new];

         while( (event = [NSApp nextEventMatchingMask: NSAnyEventMask untilDate: nil 

                          inMode: NSDefaultRunLoopMode dequeue: YES]) != nil ) {

             [NSApp sendEvent: event];

         }

         [pool release];

         struct timeval tv;

         gettimeofday(&tv,NULL);

         uint32_t ns = ((tv.tv_sec - cocoa_gui_lasttv.tv_sec) * 1000000000) + 

         (tv.tv_usec - cocoa_gui_lasttv.tv_usec)*1000;

         if( (ns * 1.05) < current_period ) {

             // We've gotten ahead - sleep for a little bit

             struct timespec tv;

             tv.tv_sec = 0;

             tv.tv_nsec = current_period - ns;

             nanosleep(&tv, &tv);

         }

         /* Update the display every 10 ticks (ie 10 times a second) and 

          * save the current tv value */

         if( cocoa_gui_ticks > 10 ) {

             gchar buf[32];

             cocoa_gui_ticks -= 10;

             double speed = (float)( (double)current_period * 100.0 / ns );

             cocoa_gui_lasttv.tv_sec = tv.tv_sec;

             cocoa_gui_lasttv.tv_usec = tv.tv_usec;

             snprintf( buf, 32, _("Running (%2.4f%%)"), speed );

             [((LxdreamMainWindow *)[NSApp mainWindow]) setStatusText: buf];

         }

     }

     return nanosecs;

 }

 void cocoa_gui_update( void )

 {

 }

 void cocoa_gui_start( void )

 {

     LxdreamMainWindow *win = (LxdreamMainWindow *)[NSApp mainWindow];

     [win setRunning: YES];

     cocoa_gui_nanos = 0;

     gettimeofday(&cocoa_gui_lasttv,NULL);

 }

 void cocoa_gui_stop( void )

 {

     LxdreamMainWindow *win = (LxdreamMainWindow *)[NSApp mainWindow];

     [win setRunning: NO];

 }

 /**

  * Queue a dreamcast_run() to execute after the currently event(s)

  */

 void cocoa_gui_run_later( void )

 {

     [[NSRunLoop currentRunLoop] performSelector: @selector(run_immediate) 

          target: [NSApp delegate] argument: nil order: 1 

          modes: [NSArray arrayWithObject: NSDefaultRunLoopMode] ];

 }