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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 669:ab344e42bca9
prev658:f5926310bfbe
next678:35eb00945316
author nkeynes
date Mon May 12 10:00:13 2008 +0000 (13 years ago)
permissions -rw-r--r--
last change Cleanup most of the -Wall warnings (getting a bit sloppy...)
Convert FP code to use fixed banks rather than indirect pointer
(3-4% faster this way now)
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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 <unistd.h>
    23 #include <glib/gi18n.h>
    24 #include <gtk/gtkversion.h>
    25 #include "dreamcast.h"
    26 #include "display.h"
    27 #include "gdrom/gdrom.h"
    28 #include "gtkui/gtkui.h"
    30 /* Base GUI clock is 10ms */
    31 #define GUI_TICK_PERIOD 10000000
    33 void gtk_gui_start( void );
    34 void gtk_gui_stop( void );
    35 void gtk_gui_alloc_resources ( void );
    36 uint32_t gtk_gui_run_slice( uint32_t nanosecs );
    38 struct dreamcast_module gtk_gui_module = { "gui", NULL,
    39 					   gtk_gui_update, 
    40 					   gtk_gui_start, 
    41 					   gtk_gui_run_slice, 
    42 					   gtk_gui_stop, 
    43 					   NULL, NULL };
    45 /**
    46  * Single-instance windows (at most one)
    47  */
    48 static main_window_t main_win = NULL;
    49 static debug_window_t debug_win = NULL;
    50 static mmio_window_t mmio_win = NULL;
    52 /**
    53  * UIManager and action helpers
    54  */
    55 static GtkUIManager *global_ui_manager;
    56 static GtkActionGroup *global_action_group;
    58 /**
    59  * Count of running nanoseconds - used to cut back on the GUI runtime
    60  */
    61 static uint32_t gtk_gui_nanos = 0;
    62 static uint32_t gtk_gui_ticks = 0;
    63 static struct timeval gtk_gui_lasttv;
    65 static gboolean gtk_gui_init_ok = FALSE;
    67 #define ENABLE_ACTION(win,name) SET_ACTION_ENABLED(win,name,TRUE)
    68 #define DISABLE_ACTION(win,name) SET_ACTION_ENABLED(win,name,FALSE)
    70 // UI Actions
    71 static const GtkActionEntry ui_actions[] = {
    72     { "FileMenu", NULL, N_("_File") },
    73     { "SettingsMenu", NULL, N_("_Settings") },
    74     { "HelpMenu", NULL, N_("_Help") },
    75     { "LoadBinary", NULL, N_("Load _Binary..."), NULL, N_("Load and run a program binary"), G_CALLBACK(load_binary_action_callback) },
    76     { "Reset", GTK_STOCK_REFRESH, N_("_Reset"), "<control>R", N_("Reset dreamcast"), G_CALLBACK(reset_action_callback) },
    77     { "Pause", GTK_STOCK_MEDIA_PAUSE, N_("_Pause"), NULL, N_("Pause dreamcast"), G_CALLBACK(pause_action_callback) },
    78     { "Run", GTK_STOCK_MEDIA_PLAY, N_("Resume"), NULL, N_("Resume"), G_CALLBACK(resume_action_callback) },
    79     { "LoadState", GTK_STOCK_REVERT_TO_SAVED, N_("_Load state..."), "F4", N_("Load an lxdream save state"), G_CALLBACK(load_state_action_callback) },
    80     { "SaveState", GTK_STOCK_SAVE_AS, N_("_Save state..."), "F3", N_("Create an lxdream save state"), G_CALLBACK(save_state_action_callback) },
    81     { "Exit", GTK_STOCK_QUIT, N_("E_xit"), NULL, N_("Exit lxdream"), G_CALLBACK(exit_action_callback) },
    82     { "GdromSettings", NULL, N_("_GD-Rom...") },
    83     { "GdromUnmount", NULL, N_("_Empty") },
    84     { "GdromMount", GTK_STOCK_CDROM, N_("_Open Image..."), "<control>O", N_("Mount a cdrom disc"), G_CALLBACK(mount_action_callback) },
    85     { "PathSettings", NULL, N_("_Paths..."), NULL, N_("Configure files and paths"), G_CALLBACK(path_settings_callback) }, 
    86     { "AudioSettings", NULL, N_("_Audio..."), NULL, N_("Configure audio output"), G_CALLBACK(audio_settings_callback) },
    87     { "ControllerSettings", NULL, N_("_Controllers..."), NULL, N_("Configure controllers"), G_CALLBACK(maple_settings_callback) },
    88     { "NetworkSettings", NULL, N_("_Network..."), NULL, N_("Configure network settings"), G_CALLBACK(network_settings_callback) },
    89     { "VideoSettings", NULL, N_("_Video..."), NULL,N_( "Configure video output"), G_CALLBACK(video_settings_callback) },
    90     { "About", GTK_STOCK_ABOUT, N_("_About..."), NULL, N_("About lxdream"), G_CALLBACK(about_action_callback) },
    91     { "DebugMenu", NULL, N_("_Debug") },
    92     { "Debugger", NULL, N_("_Debugger"), NULL, N_("Open debugger window"), G_CALLBACK(debugger_action_callback) },
    93     { "DebugMem", NULL, N_("View _Memory"), NULL, N_("View memory dump"), G_CALLBACK(debug_memory_action_callback) },
    94     { "DebugMmio", NULL, N_("View IO _Registers"), NULL, N_("View MMIO Registers"), G_CALLBACK(debug_mmio_action_callback) },
    95     { "SaveScene", NULL, N_("_Save Scene"), NULL, N_("Save next rendered scene"), G_CALLBACK(save_scene_action_callback) },
    96     { "SingleStep", GTK_STOCK_REDO, N_("_Single Step"), NULL, N_("Single step"), G_CALLBACK(debug_step_action_callback) },
    97     { "RunTo", GTK_STOCK_GOTO_LAST, N_("Run _To"), NULL, N_("Run to"), G_CALLBACK( debug_runto_action_callback) },
    98     { "SetBreakpoint", GTK_STOCK_CLOSE, N_("_Breakpoint"), NULL, N_("Toggle breakpoint"), G_CALLBACK( debug_breakpoint_action_callback) }
    99 };
   100 static const GtkToggleActionEntry ui_toggle_actions[] = {
   101     { "FullScreen", NULL, "_Full Screen", "<alt>Return", "Toggle full screen video", G_CALLBACK(fullscreen_toggle_callback), 0 },
   102 };
   104 // Menus and toolbars
   105 static const char *ui_description =
   106     "<ui>"
   107     " <menubar name='MainMenu'>"
   108     "  <menu action='FileMenu'>"
   109     "   <menuitem action='LoadBinary'/>"
   110     "   <menuitem action='GdromSettings'/>"
   111     "   <separator/>"
   112     "   <menuitem action='Reset'/>"
   113     "   <menuitem action='Pause'/>"
   114     "   <menuitem action='Run'/>"
   115     "   <menuitem action='Debugger'/>"
   116     "   <separator/>"
   117     "   <menuitem action='LoadState'/>"
   118     "   <menuitem action='SaveState'/>"
   119     "   <separator/>"
   120     "   <menuitem action='Exit'/>"
   121     "  </menu>"
   122     "  <menu action='SettingsMenu'>"
   123     "   <menuitem action='PathSettings'/>"
   124     "   <menuitem action='AudioSettings'/>"
   125     "   <menuitem action='ControllerSettings'/>"
   126     "   <menuitem action='NetworkSettings'/>"
   127     "   <menuitem action='VideoSettings'/>"
   128     "   <separator/>"
   129     "   <menuitem action='FullScreen'/>"
   130     "  </menu>"
   131     "  <menu action='HelpMenu'>"
   132     "   <menuitem action='About'/>"
   133     "  </menu>"
   134     " </menubar>"
   135     " <toolbar name='MainToolbar'>"
   136     "  <toolitem action='GdromMount'/>"
   137     "  <toolitem action='Reset'/>"
   138     "  <toolitem action='Pause'/>"
   139     "  <toolitem action='Run'/>"
   140     "  <separator/>"
   141     "  <toolitem action='LoadState'/>"
   142     "  <toolitem action='SaveState'/>"
   143     " </toolbar>"
   144     " <menubar name='DebugMenu'>"
   145     "  <menu action='FileMenu'>"
   146     "   <menuitem action='GdromSettings'/>"
   147     "   <separator/>"
   148     "   <menuitem action='Reset'/>"
   149     "   <separator/>"
   150     "   <menuitem action='LoadState'/>"
   151     "   <menuitem action='SaveState'/>"
   152     "   <separator/>"
   153     "   <menuitem action='Exit'/>"
   154     "  </menu>"
   155     "  <menu action='DebugMenu'>"
   156     "   <menuitem action='DebugMem'/>"
   157     "   <menuitem action='DebugMmio'/>"
   158     "   <menuitem action='SaveScene'/>"
   159     "   <separator/>"
   160     "   <menuitem action='SetBreakpoint'/>"
   161     "   <menuitem action='Pause'/>"
   162     "   <menuitem action='SingleStep'/>"
   163     "   <menuitem action='RunTo'/>"
   164     "   <menuitem action='Run'/>"
   165     "  </menu>"
   166     "  <menu action='SettingsMenu'>"
   167     "   <menuitem action='PathSettings'/>"
   168     "   <menuitem action='AudioSettings'/>"
   169     "   <menuitem action='ControllerSettings'/>"
   170     "   <menuitem action='NetworkSettings'/>"
   171     "   <menuitem action='VideoSettings'/>"
   172     "   <separator/>"
   173     "   <menuitem action='FullScreen'/>"
   174     "  </menu>"
   175     "  <menu action='HelpMenu'>"
   176     "   <menuitem action='About'/>"
   177     "  </menu>"
   178     " </menubar>"
   179     " <toolbar name='DebugToolbar'>"
   180     "  <toolitem action='GdromMount'/>"
   181     "  <toolitem action='Reset'/>"
   182     "  <toolitem action='Pause'/>"
   183     "  <separator/>"
   184     "  <toolitem action='SingleStep'/>"
   185     "  <toolitem action='RunTo'/>"
   186     "  <toolitem action='Run'/>"
   187     "  <toolitem action='SetBreakpoint'/>"
   188     "  <separator/>"
   189     "  <toolitem action='LoadState'/>"
   190     "  <toolitem action='SaveState'/>"
   191     " </toolbar>"
   192     "</ui>";
   194 gboolean gui_parse_cmdline( int *argc, char **argv[] )
   195 {
   196     gtk_gui_init_ok = gtk_init_check( argc, argv );
   197     return gtk_gui_init_ok;
   198 }
   200 gboolean gui_init( gboolean withDebug )
   201 {
   202     if( gtk_gui_init_ok ) {
   203 	GError *error = NULL;
   204 	dreamcast_register_module( &gtk_gui_module );
   205 	gtk_gui_alloc_resources();
   207 	global_action_group = gtk_action_group_new("MenuActions");
   208 	gtk_action_group_set_translation_domain( global_action_group, NULL );
   209 	gtk_action_group_add_actions( global_action_group, ui_actions, G_N_ELEMENTS(ui_actions), NULL );
   210 	gtk_action_group_add_toggle_actions( global_action_group, ui_toggle_actions, G_N_ELEMENTS(ui_toggle_actions), NULL );
   211 	gtk_gui_enable_action("AudioSettings", FALSE);
   212 	gtk_gui_enable_action("NetworkSettings", FALSE);
   213 	gtk_gui_enable_action("VideoSettings", FALSE);
   215 	global_ui_manager = gtk_ui_manager_new();
   216 	gtk_ui_manager_set_add_tearoffs(global_ui_manager, TRUE);
   217 	gtk_ui_manager_insert_action_group( global_ui_manager, global_action_group, 0 );
   219 	if (!gtk_ui_manager_add_ui_from_string (global_ui_manager, ui_description, -1, &error)) {
   220 	    g_message ("building menus failed: %s", error->message);
   221 	    g_error_free (error);
   222 	    exit(1);
   223 	}
   224 	GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   225 	GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu");
   226 	GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/MainToolbar");
   228 	GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu/FileMenu/GdromSettings");
   229 	gdrom_menu_init();
   230 	GtkWidget *gdrommenu = gdrom_menu_new();
   231 	gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   232 	main_win = main_window_new( APP_NAME " " APP_VERSION, menubar, toolbar, accel_group  );
   233 	main_window_set_use_grab(main_win, TRUE);
   234 	if( withDebug ) {
   235 	    gtk_gui_show_debugger();
   236 	}
   238 	return TRUE;
   239     } else {
   240 	return FALSE;
   241     }
   242 }
   244 void gui_main_loop(void)
   245 {
   246     gtk_gui_update();
   247     gtk_main();
   248 }
   250 void gui_update_state(void)
   251 {
   252     gtk_gui_update();
   253 }
   255 gboolean gui_error_dialog( const char *msg, ... )
   256 {
   257     if( main_win != NULL ) {
   258 	va_list args;
   259 	GtkWidget *dialog = 
   260 	    gtk_message_dialog_new( main_window_get_frame(main_win), GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   261 				    GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, NULL );
   262 	va_start(args, msg);
   263 	gchar *markup = g_markup_vprintf_escaped( msg, args );
   264 	va_end( args );
   265 	gtk_message_dialog_set_markup( GTK_MESSAGE_DIALOG(dialog), markup );
   266 	g_free(markup);
   267 	gtk_dialog_run(GTK_DIALOG(dialog));
   268 	gtk_widget_destroy(dialog);
   269 	return TRUE;
   270     }
   271     return FALSE;
   272 }
   274 void gui_update_io_activity( io_activity_type io, gboolean active )
   275 {
   277 }
   279 void gtk_gui_show_debugger()
   280 {
   281     if( debug_win ) {
   282 	debug_window_show(debug_win, TRUE);
   283     } else {
   284 	GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   285 	GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu");
   286 	GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugToolbar");
   287 	GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu/FileMenu/GdromSettings");
   288 	GtkWidget *gdrommenu = gdrom_menu_new();
   289 	gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   290 	gchar *title = g_strdup_printf( APP_NAME " " APP_VERSION " :: %s", _("Debugger"));
   291 	debug_win = debug_window_new( title, menubar, toolbar, accel_group  );
   292 	g_free(title);
   293     }
   294 }
   296 void gtk_gui_show_mmio()
   297 {
   298     if( mmio_win ) {
   299 	mmio_window_show(mmio_win, TRUE);
   300     } else {
   301 	gchar *title = g_strdup_printf( APP_NAME " " APP_VERSION " :: %s", _("MMIO Registers"));
   302 	mmio_win = mmio_window_new( title );
   303 	g_free(title);
   304     }
   305 }
   308 main_window_t gtk_gui_get_main()
   309 {
   310     return main_win;
   311 }
   313 debug_window_t gtk_gui_get_debugger()
   314 {
   315     return debug_win;
   316 }
   318 mmio_window_t gtk_gui_get_mmio()
   319 {
   320     return mmio_win;
   321 }
   323 /**
   324  * Hook called when DC starts running. Just disables the run/step buttons
   325  * and enables the stop button.
   326  */
   327 void gtk_gui_start( void )
   328 {
   329     main_window_set_running( main_win, TRUE );
   330     if( debug_win != NULL ) {
   331 	debug_window_set_running( debug_win, TRUE );
   332     }
   333     gtk_gui_nanos = 0;
   334     gettimeofday(&gtk_gui_lasttv,NULL);
   335 }
   337 /**
   338  * Hook called when DC stops running. Enables the run/step buttons
   339  * and disables the stop button.
   340  */
   341 void gtk_gui_stop( void )
   342 {
   343     main_window_set_running( main_win, FALSE );
   344     gtk_gui_update();
   345 }
   347 void gtk_gui_update( void )
   348 {
   349     if( global_action_group ) {
   350 	gtk_gui_enable_action("Run", dreamcast_can_run() && !dreamcast_is_running() );
   351 	gtk_gui_enable_action("Pause", dreamcast_is_running() );
   352     }
   353     if( debug_win ) {
   354 	debug_window_set_running( debug_win, FALSE );
   355 	debug_window_update(debug_win);
   356     }
   357     if( mmio_win ) {
   358 	mmio_window_update(mmio_win);
   359     }
   360     dump_window_update_all();
   361 }
   363 /**
   364  * Module run-slice. Run the event loop 100 times/second (doesn't really need to be
   365  * any more often than this), and update the speed display 10 times/second. 
   366  *
   367  * Also detect if we're running too fast here and yield for a bit
   368  */
   369 uint32_t gtk_gui_run_slice( uint32_t nanosecs ) 
   370 {
   371     gtk_gui_nanos += nanosecs;
   372     if( gtk_gui_nanos > GUI_TICK_PERIOD ) { /* 10 ms */
   373 	gtk_gui_nanos -= GUI_TICK_PERIOD;
   374 	gtk_gui_ticks ++;
   375 	uint32_t current_period = gtk_gui_ticks * GUI_TICK_PERIOD;
   377 	// Run the event loop
   378 	while( gtk_events_pending() )
   379 	    gtk_main_iteration();	
   381 	struct timeval tv;
   382 	gettimeofday(&tv,NULL);
   383 	uint32_t ns = ((tv.tv_sec - gtk_gui_lasttv.tv_sec) * 1000000000) + 
   384 	    (tv.tv_usec - gtk_gui_lasttv.tv_usec)*1000;
   385 	if( (ns * 1.05) < current_period ) {
   386 	    // We've gotten ahead - sleep for a little bit
   387 	    struct timespec tv;
   388 	    tv.tv_sec = 0;
   389 	    tv.tv_nsec = current_period - ns;
   390 	    nanosleep(&tv, &tv);
   391 	}
   393 	/* Update the display every 10 ticks (ie 10 times a second) and 
   394 	 * save the current tv value */
   395 	if( gtk_gui_ticks > 10 ) {
   396 	    gtk_gui_ticks -= 10;
   398 	    double speed = (float)( (double)current_period * 100.0 / ns );
   399 	    gtk_gui_lasttv.tv_sec = tv.tv_sec;
   400 	    gtk_gui_lasttv.tv_usec = tv.tv_usec;
   401 	    main_window_set_speed( main_win, speed );
   402 	}
   403     }
   404     return nanosecs;
   405 }
   408 PangoFontDescription *gui_fixed_font;
   409 GdkColor gui_colour_normal, gui_colour_changed, gui_colour_error;
   410 GdkColor gui_colour_warn, gui_colour_pc, gui_colour_debug;
   411 GdkColor gui_colour_trace, gui_colour_break, gui_colour_temp_break;
   412 GdkColor gui_colour_white;
   414 void gtk_gui_alloc_resources() {
   415     GdkColormap *map;
   417     gui_colour_normal.red = gui_colour_normal.green = gui_colour_normal.blue = 0;
   418     gui_colour_changed.red = gui_colour_changed.green = 64*256;
   419     gui_colour_changed.blue = 154*256;
   420     gui_colour_error.red = 65535;
   421     gui_colour_error.green = gui_colour_error.blue = 64*256;
   422     gui_colour_pc.red = 32*256;
   423     gui_colour_pc.green = 170*256;
   424     gui_colour_pc.blue = 52*256;
   425     gui_colour_warn = gui_colour_changed;
   426     gui_colour_trace.red = 156*256;
   427     gui_colour_trace.green = 78*256;
   428     gui_colour_trace.blue = 201*256;
   429     gui_colour_debug = gui_colour_pc;
   430     gui_colour_break.red = 65535;
   431     gui_colour_break.green = gui_colour_break.blue = 192*256;
   432     gui_colour_temp_break.red = gui_colour_temp_break.green = 128*256;
   433     gui_colour_temp_break.blue = 32*256;
   434     gui_colour_white.red = gui_colour_white.green = gui_colour_white.blue = 65535;
   436     map = gdk_colormap_new(gdk_visual_get_best(), TRUE);
   437     gdk_colormap_alloc_color(map, &gui_colour_normal, TRUE, TRUE);
   438     gdk_colormap_alloc_color(map, &gui_colour_changed, TRUE, TRUE);
   439     gdk_colormap_alloc_color(map, &gui_colour_error, TRUE, TRUE);
   440     gdk_colormap_alloc_color(map, &gui_colour_warn, TRUE, TRUE);
   441     gdk_colormap_alloc_color(map, &gui_colour_pc, TRUE, TRUE);
   442     gdk_colormap_alloc_color(map, &gui_colour_debug, TRUE, TRUE);
   443     gdk_colormap_alloc_color(map, &gui_colour_trace, TRUE, TRUE);
   444     gdk_colormap_alloc_color(map, &gui_colour_break, TRUE, TRUE);
   445     gdk_colormap_alloc_color(map, &gui_colour_temp_break, TRUE, TRUE);
   446     gdk_colormap_alloc_color(map, &gui_colour_white, TRUE, TRUE);
   447     gui_fixed_font = pango_font_description_from_string("Courier 10");
   448 }
   450 gint gtk_gui_run_property_dialog( const gchar *title, GtkWidget *panel, gtk_dialog_done_fn fn )
   451 {
   452     GtkWidget *dialog =
   453 	gtk_dialog_new_with_buttons(title, main_window_get_frame(main_win), 
   454 				    GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   455 				    GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
   456 				    GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
   457 				    NULL);
   458     gint result;
   459     gtk_widget_show_all(panel);
   460     gtk_container_add( GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), panel );
   461     result = gtk_dialog_run( GTK_DIALOG(dialog) );
   462     if( fn != NULL ) {
   463 	fn(panel, result == GTK_RESPONSE_ACCEPT);
   464     }
   465     gtk_widget_destroy( dialog );
   466     return result;
   467 }
   469 void gtk_gui_enable_action( const gchar *action, gboolean enable )
   470 {
   471     gtk_action_set_sensitive( gtk_action_group_get_action( global_action_group, action), enable);
   472 }
   474 static void delete_frame_buffer( guchar *pixels, gpointer buffer )
   475 {
   476     if( buffer != NULL ) {
   477 	g_free(buffer);
   478     }
   479 }
   481 GdkPixbuf *gdk_pixbuf_new_from_frame_buffer( frame_buffer_t buffer )
   482 {
   483     return gdk_pixbuf_new_from_data( (unsigned char *)buffer->data, 
   484 				     GDK_COLORSPACE_RGB,
   485 				     (buffer->colour_format == COLFMT_BGRA8888),
   486 				     8,
   487 				     buffer->width,
   488 				     buffer->height,
   489 				     buffer->rowstride,
   490 				     delete_frame_buffer,
   491 				     buffer );
   492 }
   494 /**
   495  * Extract the keyval of the key event if no modifier keys were pressed -
   496  * in other words get the keyval of the key by itself. The other way around
   497  * would be to use the hardware keysyms directly rather than the keyvals,
   498  * but the mapping looks to be messier.
   499  */
   500 uint16_t gtk_get_unmodified_keyval( GdkEventKey *event )
   501 {
   502     GdkKeymap *keymap = gdk_keymap_get_default();
   503     guint keyval;
   505     gdk_keymap_translate_keyboard_state( keymap, event->hardware_keycode, 0, 0, &keyval, 
   506 					 NULL, NULL, NULL );
   507     return keyval;
   508 }
   510 gchar *get_absolute_path( const gchar *in_path )
   511 {
   512     char tmp[PATH_MAX];
   513     if( in_path == NULL ) {
   514 	return NULL;
   515     }
   516     if( in_path[0] == '/' || in_path[0] == 0 ) {
   517 	return g_strdup(in_path);
   518     } else {
   519 	getcwd(tmp, sizeof(tmp));
   520 	return g_strdup_printf("%s%c%s", tmp, G_DIR_SEPARATOR, in_path);
   521     }
   522 }
.