/**

  * $Id$

  *

  * Core Cocoa-based user interface

  *

  * Copyright (c) 2008 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 "dream.h"

 #include "dreamcast.h"

 #include "config.h"

 #include "display.h"

 #include "gui.h"

 #include "gdrom/gdrom.h"

 #include "gdlist.h"

 #include "loader.h"

 #include "cocoaui/cocoaui.h"

 void cocoa_gui_update( void );

 void cocoa_gui_start( void );

 void cocoa_gui_stop( 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;

 static LxdreamMainWindow *mainWindow = NULL;

 @interface NSApplication (PrivateAdditions)

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

 @end

 gboolean cocoa_gui_disc_changed( gdrom_disc_t disc, const gchar *disc_name, void *user_data )

 {

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

     LxdreamMainWindow *window = (LxdreamMainWindow *)user_data;

     [window updateTitle];

     [pool release];

     return TRUE;

 }

 /**

  * Produces the menu title by looking the text up in gettext, removing any

  * underscores, and returning the result as an NSString.

  */

 static NSString *NSMENU_( const char *text )

 {

     const char *s = gettext(text);

     char buf[strlen(s)+1];

     char *d = buf;

     while( *s != '\0' ) {

         if( *s != '_' ) {

             *d++ = *s;

         }

         s++;

     }

     *d = '\0';

     return [NSString stringWithUTF8String: buf];

 }

 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(about_action:) keyEquivalent:@""];

     [appleMenu addItem:[NSMenuItem separatorItem]];

     [appleMenu addItemWithTitle: NSMENU_("_Preferences...") action:@selector(preferences_action:) keyEquivalent:@","];

     // Services Menu

     [appleMenu addItem:[NSMenuItem separatorItem]];

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

     [appleMenu addItemWithTitle: NS_("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: NSMENU_("_File")];

     [fileMenu addItemWithTitle: NSMENU_("Load _Binary...") action: @selector(load_binary_action:) keyEquivalent: @"b"];

     [[fileMenu addItemWithTitle: NSMENU_("_GD-Rom") action: nil keyEquivalent: @""]

       setSubmenu: gdromMenu];

     [fileMenu addItem: [NSMenuItem separatorItem]];

     [[fileMenu addItemWithTitle: NSMENU_("_Reset") action: @selector(reset_action:) keyEquivalent: @"r"]

       setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];

     [fileMenu addItemWithTitle: NSMENU_("_Pause") action: @selector(pause_action:) keyEquivalent: @"p"];

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

     [fileMenu addItem: [NSMenuItem separatorItem]];

     [fileMenu addItemWithTitle: NSMENU_("_Load State...") action: @selector(load_action:) keyEquivalent: @"o"];

     [fileMenu addItemWithTitle: NSMENU_("_Save State...") action: @selector(save_action:) keyEquivalent: @"s"];

     [fileMenu addItem: [NSMenuItem separatorItem]];

     [fileMenu addItemWithTitle: NSMENU_("_Full Screen...") action: @selector(fullscreen_action:) keyEquivalent: @"\r"];

     menuItem = [[NSMenuItem alloc] initWithTitle:NSMENU_("_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;

         gui_do_later(dreamcast_run);

     }

 }

 - (void)windowDidBecomeKey: (NSNotification *)notice

 {

     display_set_focused( TRUE );

 }

 - (void)windowDidResignKey: (NSNotification *)notice

 {

     display_set_focused( FALSE );

     [mainWindow setIsGrabbed: NO];

 }

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

 {

     const gchar *cname = [filename UTF8String];

     if( file_load_magic(cname) ) {

         // Queue up a run event

         gui_do_later(dreamcast_run);

         return YES;

     } else {

         return NO;

     }

 }

 - (void) about_action: (id)sender

 {

     NSArray *keys = [NSArray arrayWithObjects: @"Version", @"Copyright", nil];

     NSArray *values = [NSArray arrayWithObjects: NS_(lxdream_full_version), NS_(lxdream_copyright),  nil];

     NSDictionary *options= [NSDictionary dictionaryWithObjects: values forKeys: keys];

     [NSApp orderFrontStandardAboutPanelWithOptions: options];

 }

 - (void) preferences_action: (id)sender

 {

     cocoa_gui_show_preferences();

 }

 - (void) load_action: (id)sender

 {

     NSOpenPanel *panel = [NSOpenPanel openPanel];

     const gchar *dir = lxdream_get_config_value(CONFIG_SAVE_PATH);

     NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

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

     int result = [panel runModalForDirectory: path 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];

     const gchar *dir = lxdream_get_config_value(CONFIG_SAVE_PATH);

     NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

     [panel setRequiredFileType: @"dst"];

     int result = [panel runModalForDirectory: path file:@""];

     if( result == NSOKButton ) {

         NSString *filename = [panel filename];

         dreamcast_save_state( [filename UTF8String] );

     }

 }

 - (void) load_binary_action: (id)sender

 {

     NSOpenPanel *panel = [NSOpenPanel openPanel];

     const gchar *dir = lxdream_get_config_value(CONFIG_DEFAULT_PATH);

     NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

     int result = [panel runModalForDirectory: path 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];

     const gchar *dir = lxdream_get_config_value(CONFIG_DEFAULT_PATH);

     NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

     int result = [panel runModalForDirectory: path 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

 {

     if( !dreamcast_is_running() ) {

         gui_do_later(dreamcast_run);

     }

 }

 - (void) gdrom_list_action: (id)sender

 {

     gdrom_list_set_selection( [sender tag] );

 }

 - (void) fullscreen_action: (id)sender

 {

     [mainWindow setFullscreen: ![mainWindow isFullscreen]]; 

 }

 @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, gboolean withFullscreen )

 {

     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:@"lxdream" ofType:@"png"];

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

     [iconImage setName: @"NSApplicationIcon"];

     [NSApp setApplicationIconImage: iconImage];   

     cocoa_gui_create_menu();

     mainWindow = cocoa_gui_create_main_window();

     [mainWindow makeKeyAndOrderFront: nil];

     [NSApp activateIgnoringOtherApps: YES];   

     register_gdrom_disc_change_hook( cocoa_gui_disc_changed, mainWindow );

     if( withFullscreen ) {

     	[mainWindow setFullscreen: YES];

     }

     [pool release];

     return TRUE;

 }

 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();

 }

 void gui_set_use_grab( gboolean grab )

 {

     [mainWindow setUseGrab: (grab ? YES : NO)];

 }

 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(NS_("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 );

             [mainWindow setStatusText: buf];

         }

     }

     return nanosecs;

 }

 void cocoa_gui_update( void )

 {

 }

 void cocoa_gui_start( void )

 {

     [mainWindow setRunning: YES];

     cocoa_gui_nanos = 0;

     gettimeofday(&cocoa_gui_lasttv,NULL);

 }

 void cocoa_gui_stop( void )

 {

     [mainWindow setRunning: NO];

 }

 @interface DoLaterStub : NSObject

 {

     do_later_callback_t func;

 }

 @end    

 @implementation DoLaterStub

 - (id) init: (do_later_callback_t)f

 {

     [super init];

     func = f;

     return self;

 }

 - (void) do

 {

     func();

 }

 @end

 /**

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

  */

 void gui_do_later( do_later_callback_t func )

 {

     DoLaterStub *stub = [[[DoLaterStub alloc] init: func] autorelease]; 

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

      target: stub argument: nil order: 1 

      modes: [NSArray arrayWithObject: NSDefaultRunLoopMode] ];

 }

 /*************************** Convenience methods ***************************/

 NSImage *NSImage_new_from_framebuffer( frame_buffer_t buffer )

 {

     NSBitmapImageRep *rep = 

         [[NSBitmapImageRep alloc] initWithBitmapDataPlanes: &buffer->data

          pixelsWide: buffer->width  pixelsHigh: buffer->height

          bitsPerSample: 8 samplesPerPixel: 3

          hasAlpha: NO isPlanar: NO

          colorSpaceName: NSDeviceRGBColorSpace  bitmapFormat: 0

          bytesPerRow: buffer->rowstride  bitsPerPixel: 24];

     NSImage *image = [[NSImage alloc] initWithSize: NSMakeSize(0.0,0.0)];

     [image addRepresentation: rep];

     return image;

 }

 NSTextField *cocoa_gui_add_label( NSView *parent, NSString *text, NSRect frame )

 {

     NSTextField *label = [[NSTextField alloc] initWithFrame: frame];

     [label setStringValue: text];

     [label setBordered: NO];

     [label setDrawsBackground: NO];

     [label setEditable: NO];

     [label setAutoresizingMask: (NSViewMinYMargin|NSViewMaxXMargin)];

     if( parent != NULL ) {

         [parent addSubview: label];

     }

     return label;

 }