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lxdream.org :: lxdream/src/gtkui/gtkui.c
lxdream 0.9.1
released Jun 29
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filename src/gtkui/gtkui.c
changeset 618:3ade50e8603c
prev608:4f588e52bce0
next622:3554650afb26
author nkeynes
date Wed Jan 30 02:39:57 2008 +0000 (13 years ago)
permissions -rw-r--r--
last change Embed gdk_display_warp_pointer for GTK 2.6 implementations that lack in
(mainly for OSX)
Perform real modifier mapping to get CTRL+ALT for screen ungrab rather than
assuming the keysyms.
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     1 /**
     2  * $Id$
     3  *
     4  * Core GTK-based user interface
     5  *
     6  * Copyright (c) 2005 Nathan Keynes.
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License as published by
    10  * the Free Software Foundation; either version 2 of the License, or
    11  * (at your option) any later version.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  */
    19 #include "lxdream.h"
    20 #include <sys/time.h>
    21 #include <time.h>
    22 #include <glib/gi18n.h>
    23 #include <gtk/gtkversion.h>
    24 #include "dreamcast.h"
    25 #include "display.h"
    26 #include "gdrom/gdrom.h"
    27 #include "gtkui/gtkui.h"
    30 void gtk_gui_start( void );
    31 void gtk_gui_stop( void );
    32 void gtk_gui_alloc_resources ( void );
    33 uint32_t gtk_gui_run_slice( uint32_t nanosecs );
    35 struct dreamcast_module gtk_gui_module = { "gui", NULL,
    36 					   gtk_gui_update, 
    37 					   gtk_gui_start, 
    38 					   gtk_gui_run_slice, 
    39 					   gtk_gui_stop, 
    40 					   NULL, NULL };
    42 /**
    43  * Single-instance windows (at most one)
    44  */
    45 static main_window_t main_win = NULL;
    46 static debug_window_t debug_win = NULL;
    47 static mmio_window_t mmio_win = NULL;
    49 /**
    50  * UIManager and action helpers
    51  */
    52 static GtkUIManager *global_ui_manager;
    53 static GtkActionGroup *global_action_group;
    55 /**
    56  * Count of running nanoseconds - used to cut back on the GUI runtime
    57  */
    58 static uint32_t gtk_gui_nanos = 0;
    59 static struct timeval gtk_gui_lasttv;
    61 static gboolean gtk_gui_init_ok = FALSE;
    63 #define ENABLE_ACTION(win,name) SET_ACTION_ENABLED(win,name,TRUE)
    64 #define DISABLE_ACTION(win,name) SET_ACTION_ENABLED(win,name,FALSE)
    66 // UI Actions
    67 static const GtkActionEntry ui_actions[] = {
    68     { "FileMenu", NULL, N_("_File") },
    69     { "SettingsMenu", NULL, N_("_Settings") },
    70     { "HelpMenu", NULL, N_("_Help") },
    71     { "LoadBinary", NULL, N_("Load _Binary..."), NULL, N_("Load and run a program binary"), G_CALLBACK(load_binary_action_callback) },
    72     { "Reset", GTK_STOCK_REFRESH, N_("_Reset"), "<control>R", N_("Reset dreamcast"), G_CALLBACK(reset_action_callback) },
    73     { "Pause", GTK_STOCK_MEDIA_PAUSE, N_("_Pause"), NULL, N_("Pause dreamcast"), G_CALLBACK(pause_action_callback) },
    74     { "Run", GTK_STOCK_MEDIA_PLAY, N_("Resume"), NULL, N_("Resume"), G_CALLBACK(resume_action_callback) },
    75     { "LoadState", GTK_STOCK_REVERT_TO_SAVED, N_("_Load state..."), "F4", N_("Load an lxdream save state"), G_CALLBACK(load_state_action_callback) },
    76     { "SaveState", GTK_STOCK_SAVE_AS, N_("_Save state..."), "F3", N_("Create an lxdream save state"), G_CALLBACK(save_state_action_callback) },
    77     { "Exit", GTK_STOCK_QUIT, N_("E_xit"), NULL, N_("Exit lxdream"), G_CALLBACK(exit_action_callback) },
    78     { "GdromSettings", NULL, N_("_GD-Rom...") },
    79     { "GdromUnmount", NULL, N_("_Empty") },
    80     { "GdromMount", GTK_STOCK_CDROM, N_("_Open Image..."), "<control>O", N_("Mount a cdrom disc"), G_CALLBACK(mount_action_callback) },
    81     { "PathSettings", NULL, N_("_Paths..."), NULL, N_("Configure files and paths"), G_CALLBACK(path_settings_callback) }, 
    82     { "AudioSettings", NULL, N_("_Audio..."), NULL, N_("Configure audio output"), G_CALLBACK(audio_settings_callback) },
    83     { "ControllerSettings", NULL, N_("_Controllers..."), NULL, N_("Configure controllers"), G_CALLBACK(maple_settings_callback) },
    84     { "NetworkSettings", NULL, N_("_Network..."), NULL, N_("Configure network settings"), G_CALLBACK(network_settings_callback) },
    85     { "VideoSettings", NULL, N_("_Video..."), NULL,N_( "Configure video output"), G_CALLBACK(video_settings_callback) },
    86     { "About", GTK_STOCK_ABOUT, N_("_About..."), NULL, N_("About lxdream"), G_CALLBACK(about_action_callback) },
    87     { "DebugMenu", NULL, N_("_Debug") },
    88     { "Debugger", NULL, N_("_Debugger"), NULL, N_("Open debugger window"), G_CALLBACK(debugger_action_callback) },
    89     { "DebugMem", NULL, N_("View _Memory"), NULL, N_("View memory dump"), G_CALLBACK(debug_memory_action_callback) },
    90     { "DebugMmio", NULL, N_("View IO _Registers"), NULL, N_("View MMIO Registers"), G_CALLBACK(debug_mmio_action_callback) },
    91     { "SaveScene", NULL, N_("_Save Scene"), NULL, N_("Save next rendered scene"), G_CALLBACK(save_scene_action_callback) },
    92     { "SingleStep", GTK_STOCK_REDO, N_("_Single Step"), NULL, N_("Single step"), G_CALLBACK(debug_step_action_callback) },
    93     { "RunTo", GTK_STOCK_GOTO_LAST, N_("Run _To"), NULL, N_("Run to"), G_CALLBACK( debug_runto_action_callback) },
    94     { "SetBreakpoint", GTK_STOCK_CLOSE, N_("_Breakpoint"), NULL, N_("Toggle breakpoint"), G_CALLBACK( debug_breakpoint_action_callback) }
    95 };
    96 static const GtkToggleActionEntry ui_toggle_actions[] = {
    97     { "FullScreen", NULL, "_Full Screen", "<alt>Return", "Toggle full screen video", G_CALLBACK(fullscreen_toggle_callback), 0 },
    98 };
   100 // Menus and toolbars
   101 static const char *ui_description =
   102     "<ui>"
   103     " <menubar name='MainMenu'>"
   104     "  <menu action='FileMenu'>"
   105     "   <menuitem action='LoadBinary'/>"
   106     "   <menuitem action='GdromSettings'/>"
   107     "   <separator/>"
   108     "   <menuitem action='Reset'/>"
   109     "   <menuitem action='Pause'/>"
   110     "   <menuitem action='Run'/>"
   111     "   <menuitem action='Debugger'/>"
   112     "   <separator/>"
   113     "   <menuitem action='LoadState'/>"
   114     "   <menuitem action='SaveState'/>"
   115     "   <separator/>"
   116     "   <menuitem action='Exit'/>"
   117     "  </menu>"
   118     "  <menu action='SettingsMenu'>"
   119     "   <menuitem action='PathSettings'/>"
   120     "   <menuitem action='AudioSettings'/>"
   121     "   <menuitem action='ControllerSettings'/>"
   122     "   <menuitem action='NetworkSettings'/>"
   123     "   <menuitem action='VideoSettings'/>"
   124     "   <separator/>"
   125     "   <menuitem action='FullScreen'/>"
   126     "  </menu>"
   127     "  <menu action='HelpMenu'>"
   128     "   <menuitem action='About'/>"
   129     "  </menu>"
   130     " </menubar>"
   131     " <toolbar name='MainToolbar'>"
   132     "  <toolitem action='GdromMount'/>"
   133     "  <toolitem action='Reset'/>"
   134     "  <toolitem action='Pause'/>"
   135     "  <toolitem action='Run'/>"
   136     "  <separator/>"
   137     "  <toolitem action='LoadState'/>"
   138     "  <toolitem action='SaveState'/>"
   139     " </toolbar>"
   140     " <menubar name='DebugMenu'>"
   141     "  <menu action='FileMenu'>"
   142     "   <menuitem action='GdromSettings'/>"
   143     "   <separator/>"
   144     "   <menuitem action='Reset'/>"
   145     "   <separator/>"
   146     "   <menuitem action='LoadState'/>"
   147     "   <menuitem action='SaveState'/>"
   148     "   <separator/>"
   149     "   <menuitem action='Exit'/>"
   150     "  </menu>"
   151     "  <menu action='DebugMenu'>"
   152     "   <menuitem action='DebugMem'/>"
   153     "   <menuitem action='DebugMmio'/>"
   154     "   <menuitem action='SaveScene'/>"
   155     "   <separator/>"
   156     "   <menuitem action='SetBreakpoint'/>"
   157     "   <menuitem action='Pause'/>"
   158     "   <menuitem action='SingleStep'/>"
   159     "   <menuitem action='RunTo'/>"
   160     "   <menuitem action='Run'/>"
   161     "  </menu>"
   162     "  <menu action='SettingsMenu'>"
   163     "   <menuitem action='PathSettings'/>"
   164     "   <menuitem action='AudioSettings'/>"
   165     "   <menuitem action='ControllerSettings'/>"
   166     "   <menuitem action='NetworkSettings'/>"
   167     "   <menuitem action='VideoSettings'/>"
   168     "   <separator/>"
   169     "   <menuitem action='FullScreen'/>"
   170     "  </menu>"
   171     "  <menu action='HelpMenu'>"
   172     "   <menuitem action='About'/>"
   173     "  </menu>"
   174     " </menubar>"
   175     " <toolbar name='DebugToolbar'>"
   176     "  <toolitem action='GdromMount'/>"
   177     "  <toolitem action='Reset'/>"
   178     "  <toolitem action='Pause'/>"
   179     "  <separator/>"
   180     "  <toolitem action='SingleStep'/>"
   181     "  <toolitem action='RunTo'/>"
   182     "  <toolitem action='Run'/>"
   183     "  <toolitem action='SetBreakpoint'/>"
   184     "  <separator/>"
   185     "  <toolitem action='LoadState'/>"
   186     "  <toolitem action='SaveState'/>"
   187     " </toolbar>"
   188     "</ui>";
   190 gboolean gui_parse_cmdline( int *argc, char **argv[] )
   191 {
   192     gtk_gui_init_ok = gtk_init_check( argc, argv );
   193     return gtk_gui_init_ok;
   194 }
   196 gboolean gui_init( gboolean withDebug )
   197 {
   198     if( gtk_gui_init_ok ) {
   199 	GError *error = NULL;
   200 	dreamcast_register_module( &gtk_gui_module );
   201 	gtk_gui_alloc_resources();
   203 	global_action_group = gtk_action_group_new("MenuActions");
   204 	gtk_action_group_set_translation_domain( global_action_group, NULL );
   205 	gtk_action_group_add_actions( global_action_group, ui_actions, G_N_ELEMENTS(ui_actions), NULL );
   206 	gtk_action_group_add_toggle_actions( global_action_group, ui_toggle_actions, G_N_ELEMENTS(ui_toggle_actions), NULL );
   207 	gtk_gui_enable_action("AudioSettings", FALSE);
   208 	gtk_gui_enable_action("NetworkSettings", FALSE);
   209 	gtk_gui_enable_action("VideoSettings", FALSE);
   211 	global_ui_manager = gtk_ui_manager_new();
   212 	gtk_ui_manager_set_add_tearoffs(global_ui_manager, TRUE);
   213 	gtk_ui_manager_insert_action_group( global_ui_manager, global_action_group, 0 );
   215 	if (!gtk_ui_manager_add_ui_from_string (global_ui_manager, ui_description, -1, &error)) {
   216 	    g_message ("building menus failed: %s", error->message);
   217 	    g_error_free (error);
   218 	    exit(1);
   219 	}
   220 	GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   221 	GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu");
   222 	GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/MainToolbar");
   224 	GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu/FileMenu/GdromSettings");
   225 	gdrom_menu_init();
   226 	GtkWidget *gdrommenu = gdrom_menu_new();
   227 	gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   228 	main_win = main_window_new( APP_NAME " " APP_VERSION, menubar, toolbar, accel_group  );
   229 	main_window_set_use_grab(main_win, TRUE);
   230 	if( withDebug ) {
   231 	    gtk_gui_show_debugger();
   232 	}
   234 	return TRUE;
   235     } else {
   236 	return FALSE;
   237     }
   238 }
   240 void gui_main_loop(void)
   241 {
   242     gtk_gui_update();
   243     gtk_main();
   244 }
   246 void gui_update_state(void)
   247 {
   248     gtk_gui_update();
   249 }
   251 gboolean gui_error_dialog( const char *msg, ... )
   252 {
   253     if( main_win != NULL ) {
   254 	va_list args;
   255 	GtkWidget *dialog = 
   256 	    gtk_message_dialog_new( main_window_get_frame(main_win), GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   257 				    GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, NULL );
   258 	va_start(args, msg);
   259 	gchar *markup = g_markup_vprintf_escaped( msg, args );
   260 	va_end( args );
   261 	gtk_message_dialog_set_markup( GTK_MESSAGE_DIALOG(dialog), markup );
   262 	g_free(markup);
   263 	gtk_dialog_run(GTK_DIALOG(dialog));
   264 	gtk_widget_destroy(dialog);
   265 	return TRUE;
   266     }
   267     return FALSE;
   268 }
   270 void gui_update_io_activity( io_activity_type io, gboolean active )
   271 {
   273 }
   275 void gtk_gui_show_debugger()
   276 {
   277     if( debug_win ) {
   278 	debug_window_show(debug_win, TRUE);
   279     } else {
   280 	GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   281 	GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu");
   282 	GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugToolbar");
   283 	GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu/FileMenu/GdromSettings");
   284 	GtkWidget *gdrommenu = gdrom_menu_new();
   285 	gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   286 	gchar *title = g_strdup_printf( APP_NAME " " APP_VERSION " :: %s", _("Debugger"));
   287 	debug_win = debug_window_new( title, menubar, toolbar, accel_group  );
   288 	g_free(title);
   289     }
   290 }
   292 void gtk_gui_show_mmio()
   293 {
   294     if( mmio_win ) {
   295 	mmio_window_show(mmio_win, TRUE);
   296     } else {
   297 	gchar *title = g_strdup_printf( APP_NAME " " APP_VERSION " :: %s", _("MMIO Registers"));
   298 	mmio_win = mmio_window_new( title );
   299 	g_free(title);
   300     }
   301 }
   304 main_window_t gtk_gui_get_main()
   305 {
   306     return main_win;
   307 }
   309 debug_window_t gtk_gui_get_debugger()
   310 {
   311     return debug_win;
   312 }
   314 mmio_window_t gtk_gui_get_mmio()
   315 {
   316     return mmio_win;
   317 }
   319 GtkWidget *gtk_gui_get_renderarea()
   320 {
   321     if( main_win == NULL ) {
   322 	return NULL;
   323     } else {
   324 	return main_window_get_renderarea(main_win);
   325     }
   326 }
   328 /**
   329  * Hook called when DC starts running. Just disables the run/step buttons
   330  * and enables the stop button.
   331  */
   332 void gtk_gui_start( void )
   333 {
   334     main_window_set_running( main_win, TRUE );
   335     if( debug_win != NULL ) {
   336 	debug_window_set_running( debug_win, TRUE );
   337     }
   338     gtk_gui_nanos = 0;
   339     gettimeofday(&gtk_gui_lasttv,NULL);
   340 }
   342 /**
   343  * Hook called when DC stops running. Enables the run/step buttons
   344  * and disables the stop button.
   345  */
   346 void gtk_gui_stop( void )
   347 {
   348     main_window_set_running( main_win, FALSE );
   349     gtk_gui_update();
   350 }
   352 void gtk_gui_update( void )
   353 {
   354     if( global_action_group ) {
   355 	gtk_gui_enable_action("Run", dreamcast_can_run() && !dreamcast_is_running() );
   356 	gtk_gui_enable_action("Pause", dreamcast_is_running() );
   357     }
   358     if( debug_win ) {
   359 	debug_window_set_running( debug_win, FALSE );
   360 	debug_window_update(debug_win);
   361     }
   362     if( mmio_win ) {
   363 	mmio_window_update(mmio_win);
   364     }
   365     dump_window_update_all();
   366 }
   368 /**
   369  * Module run-slice. Because UI processing is fairly expensive, only 
   370  * run the processing about 10 times a second while we're emulating.
   371  */
   372 uint32_t gtk_gui_run_slice( uint32_t nanosecs ) 
   373 {
   374     gtk_gui_nanos += nanosecs;
   375     if( gtk_gui_nanos > 100000000 ) { 
   376 	struct timeval tv;
   377 	while( gtk_events_pending() )
   378 	    gtk_main_iteration();
   380 	gettimeofday(&tv,NULL);
   381 	double ns = ((tv.tv_sec - gtk_gui_lasttv.tv_sec) * 1000000000.0) +
   382 	    ((tv.tv_usec - gtk_gui_lasttv.tv_usec)*1000.0);
   383 	double speed = (float)( (double)gtk_gui_nanos * 100.0 / ns );
   384 	gtk_gui_lasttv.tv_sec = tv.tv_sec;
   385 	gtk_gui_lasttv.tv_usec = tv.tv_usec;
   386 	main_window_set_speed( main_win, speed );
   387 	gtk_gui_nanos = 0;
   388     }
   389     return nanosecs;
   390 }
   393 PangoFontDescription *gui_fixed_font;
   394 GdkColor gui_colour_normal, gui_colour_changed, gui_colour_error;
   395 GdkColor gui_colour_warn, gui_colour_pc, gui_colour_debug;
   396 GdkColor gui_colour_trace, gui_colour_break, gui_colour_temp_break;
   397 GdkColor gui_colour_white;
   399 void gtk_gui_alloc_resources() {
   400     GdkColormap *map;
   402     gui_colour_normal.red = gui_colour_normal.green = gui_colour_normal.blue = 0;
   403     gui_colour_changed.red = gui_colour_changed.green = 64*256;
   404     gui_colour_changed.blue = 154*256;
   405     gui_colour_error.red = 65535;
   406     gui_colour_error.green = gui_colour_error.blue = 64*256;
   407     gui_colour_pc.red = 32*256;
   408     gui_colour_pc.green = 170*256;
   409     gui_colour_pc.blue = 52*256;
   410     gui_colour_warn = gui_colour_changed;
   411     gui_colour_trace.red = 156*256;
   412     gui_colour_trace.green = 78*256;
   413     gui_colour_trace.blue = 201*256;
   414     gui_colour_debug = gui_colour_pc;
   415     gui_colour_break.red = 65535;
   416     gui_colour_break.green = gui_colour_break.blue = 192*256;
   417     gui_colour_temp_break.red = gui_colour_temp_break.green = 128*256;
   418     gui_colour_temp_break.blue = 32*256;
   419     gui_colour_white.red = gui_colour_white.green = gui_colour_white.blue = 65535;
   421     map = gdk_colormap_new(gdk_visual_get_best(), TRUE);
   422     gdk_colormap_alloc_color(map, &gui_colour_normal, TRUE, TRUE);
   423     gdk_colormap_alloc_color(map, &gui_colour_changed, TRUE, TRUE);
   424     gdk_colormap_alloc_color(map, &gui_colour_error, TRUE, TRUE);
   425     gdk_colormap_alloc_color(map, &gui_colour_warn, TRUE, TRUE);
   426     gdk_colormap_alloc_color(map, &gui_colour_pc, TRUE, TRUE);
   427     gdk_colormap_alloc_color(map, &gui_colour_debug, TRUE, TRUE);
   428     gdk_colormap_alloc_color(map, &gui_colour_trace, TRUE, TRUE);
   429     gdk_colormap_alloc_color(map, &gui_colour_break, TRUE, TRUE);
   430     gdk_colormap_alloc_color(map, &gui_colour_temp_break, TRUE, TRUE);
   431     gdk_colormap_alloc_color(map, &gui_colour_white, TRUE, TRUE);
   432     gui_fixed_font = pango_font_description_from_string("Courier 10");
   433 }
   435 gint gtk_gui_run_property_dialog( const gchar *title, GtkWidget *panel, gtk_dialog_done_fn fn )
   436 {
   437     GtkWidget *dialog =
   438 	gtk_dialog_new_with_buttons(title, main_window_get_frame(main_win), 
   439 				    GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   440 				    GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
   441 				    GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
   442 				    NULL);
   443     gint result;
   444     gtk_widget_show_all(panel);
   445     gtk_container_add( GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), panel );
   446     result = gtk_dialog_run( GTK_DIALOG(dialog) );
   447     if( fn != NULL ) {
   448 	fn(panel, result == GTK_RESPONSE_ACCEPT);
   449     }
   450     gtk_widget_destroy( dialog );
   451     return result;
   452 }
   454 void gtk_gui_enable_action( const gchar *action, gboolean enable )
   455 {
   456     gtk_action_set_sensitive( gtk_action_group_get_action( global_action_group, action), enable);
   457 }
   459 static void delete_frame_buffer( guchar *pixels, gpointer buffer )
   460 {
   461     if( buffer != NULL ) {
   462 	g_free(buffer);
   463     }
   464 }
   466 GdkPixbuf *gdk_pixbuf_new_from_frame_buffer( frame_buffer_t buffer )
   467 {
   468     return gdk_pixbuf_new_from_data( (unsigned char *)buffer->data, 
   469 				     GDK_COLORSPACE_RGB,
   470 				     (buffer->colour_format == COLFMT_BGRA8888),
   471 				     8,
   472 				     buffer->width,
   473 				     buffer->height,
   474 				     buffer->rowstride,
   475 				     delete_frame_buffer,
   476 				     buffer );
   477 }
   479 /**
   480  * Extract the keyval of the key event if no modifier keys were pressed -
   481  * in other words get the keyval of the key by itself. The other way around
   482  * would be to use the hardware keysyms directly rather than the keyvals,
   483  * but the mapping looks to be messier.
   484  */
   485 uint16_t gtk_get_unmodified_keyval( GdkEventKey *event )
   486 {
   487     GdkKeymap *keymap = gdk_keymap_get_default();
   488     guint keyval;
   490     gdk_keymap_translate_keyboard_state( keymap, event->hardware_keycode, 0, 0, &keyval, 
   491 					 NULL, NULL, NULL );
   492     return keyval;
   493 }
   495 /************* X11-specificness **********/
   496 #include <gdk/gdkx.h>
   498 guint gdk_keycode_to_modifier( GdkDisplay *display, guint keycode )
   499 {
   500   int i;
   501   int result = 0;
   502   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
   503   XModifierKeymap *keymap = XGetModifierMapping( xdisplay );
   504   for( i=0; i<8*keymap->max_keypermod; i++ ) {
   505     if( keymap->modifiermap[i] == keycode ) {
   506       result = 1 << (i/keymap->max_keypermod);
   507       break;
   508     }
   509   }
   510   XFreeModifiermap(keymap);
   511   return result;
   512 }
   514 #if !(GTK_CHECK_VERSION(2,8,0))
   515 /* gdk_display_warp_pointer was added in GTK 2.8. If we're using an earlier
   516  * version, include the code here. (Can't just set the dependency on 2.8 as
   517  * it still hasn't been ported to OSX...) Original copyright statement belo
   518  */
   520 /* GDK - The GIMP Drawing Kit
   521  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   522  *
   523  * This library is free software; you can redistribute it and/or
   524  * modify it under the terms of the GNU Lesser General Public
   525  * License as published by the Free Software Foundation; either
   526  * version 2 of the License, or (at your option) any later version.
   527  *
   528  * This library is distributed in the hope that it will be useful,
   529  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   530  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   531  * Lesser General Public License for more details.
   532  *
   533  * You should have received a copy of the GNU Lesser General Public
   534  * License along with this library; if not, write to the
   535  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   536  * Boston, MA 02111-1307, USA.
   537  */
   539 /*
   540  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
   541  * file for a list of people on the GTK+ Team.  See the ChangeLog
   542  * files for a list of changes.  These files are distributed with
   543  * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
   544  */
   545 void gdk_display_warp_pointer (GdkDisplay *display,
   546                           GdkScreen  *screen,
   547                           gint        x,
   548                           gint        y)
   549 {
   550   Display *xdisplay;
   551   Window dest;
   553   xdisplay = GDK_DISPLAY_XDISPLAY (display);
   554   dest = GDK_WINDOW_XWINDOW (gdk_screen_get_root_window (screen));
   556   XWarpPointer (xdisplay, None, dest, 0, 0, 0, 0, x, y);  
   557 }
   559 #endif
.