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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 839:51f1c4195790
prev837:4eae2ddccf9c
next845:d6131bbe2219
author nkeynes
date Tue Sep 02 03:34:00 2008 +0000 (13 years ago)
permissions -rw-r--r--
last change Implement absolute positioning mouse mode when not grabbed
enable/disable grab on dreamcast start/stop where it's requested
by the controllers
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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 <time.h>
    20 #include <stdlib.h>
    21 #include <unistd.h>
    22 #include <sys/time.h>
    23 #include <gtk/gtkversion.h>
    24 #include "lxdream.h"
    25 #include "dreamcast.h"
    26 #include "dream.h"
    27 #include "display.h"
    28 #include "gdrom/gdrom.h"
    29 #include "gtkui/gtkui.h"
    31 void gtk_gui_start( void );
    32 void gtk_gui_stop( void );
    33 void gtk_gui_alloc_resources ( void );
    34 uint32_t gtk_gui_run_slice( uint32_t nanosecs );
    36 struct dreamcast_module gtk_gui_module = { "gui", NULL,
    37         gtk_gui_update, 
    38         gtk_gui_start, 
    39         gtk_gui_run_slice, 
    40         gtk_gui_stop, 
    41         NULL, NULL };
    43 /**
    44  * Single-instance windows (at most one)
    45  */
    46 static main_window_t main_win = NULL;
    47 static debug_window_t debug_win = NULL;
    48 static mmio_window_t mmio_win = NULL;
    50 /**
    51  * UIManager and action helpers
    52  */
    53 static GtkUIManager *global_ui_manager;
    54 static GtkActionGroup *global_action_group;
    56 /**
    57  * Count of running nanoseconds - used to cut back on the GUI runtime
    58  */
    59 static uint32_t gtk_gui_nanos = 0;
    60 static uint32_t gtk_gui_ticks = 0;
    61 static struct timeval gtk_gui_lasttv;
    63 static gboolean gtk_gui_init_ok = FALSE;
    65 #define ENABLE_ACTION(win,name) SET_ACTION_ENABLED(win,name,TRUE)
    66 #define DISABLE_ACTION(win,name) SET_ACTION_ENABLED(win,name,FALSE)
    68 // UI Actions
    69 static const GtkActionEntry ui_actions[] = {
    70         { "FileMenu", NULL, N_("_File") },
    71         { "SettingsMenu", NULL, N_("_Settings") },
    72         { "HelpMenu", NULL, N_("_Help") },
    73         { "LoadBinary", NULL, N_("Load _Binary..."), NULL, N_("Load and run a program binary"), G_CALLBACK(load_binary_action_callback) },
    74         { "Reset", GTK_STOCK_REFRESH, N_("_Reset"), "<control>R", N_("Reset dreamcast"), G_CALLBACK(reset_action_callback) },
    75         { "Pause", GTK_STOCK_MEDIA_PAUSE, N_("_Pause"), NULL, N_("Pause dreamcast"), G_CALLBACK(pause_action_callback) },
    76         { "Run", GTK_STOCK_MEDIA_PLAY, N_("Resume"), NULL, N_("Resume"), G_CALLBACK(resume_action_callback) },
    77         { "LoadState", GTK_STOCK_REVERT_TO_SAVED, N_("_Load State..."), "F4", N_("Load an lxdream save state"), G_CALLBACK(load_state_action_callback) },
    78         { "SaveState", GTK_STOCK_SAVE_AS, N_("_Save State..."), "F3", N_("Create an lxdream save state"), G_CALLBACK(save_state_action_callback) },
    79         { "Exit", GTK_STOCK_QUIT, N_("E_xit"), NULL, N_("Exit lxdream"), G_CALLBACK(exit_action_callback) },
    80         { "GdromSettings", NULL, N_("_GD-Rom") },
    81         { "GdromUnmount", NULL, N_("_Empty") },
    82         { "GdromMount", GTK_STOCK_CDROM, N_("_Open Image..."), "<control>O", N_("Mount a cdrom disc"), G_CALLBACK(mount_action_callback) },
    83         { "PathSettings", NULL, N_("_Paths..."), NULL, N_("Configure files and paths"), G_CALLBACK(path_settings_callback) }, 
    84         { "AudioSettings", NULL, N_("_Audio..."), NULL, N_("Configure audio output"), G_CALLBACK(audio_settings_callback) },
    85         { "ControllerSettings", NULL, N_("_Controllers..."), NULL, N_("Configure controllers"), G_CALLBACK(maple_settings_callback) },
    86         { "NetworkSettings", NULL, N_("_Network..."), NULL, N_("Configure network settings"), G_CALLBACK(network_settings_callback) },
    87         { "VideoSettings", NULL, N_("_Video..."), NULL,N_( "Configure video output"), G_CALLBACK(video_settings_callback) },
    88         { "About", GTK_STOCK_ABOUT, N_("_About..."), NULL, N_("About lxdream"), G_CALLBACK(about_action_callback) },
    89         { "DebugMenu", NULL, N_("_Debug") },
    90         { "Debugger", NULL, N_("_Debugger"), NULL, N_("Open debugger window"), G_CALLBACK(debugger_action_callback) },
    91         { "DebugMem", NULL, N_("View _Memory"), NULL, N_("View memory dump"), G_CALLBACK(debug_memory_action_callback) },
    92         { "DebugMmio", NULL, N_("View IO _Registers"), NULL, N_("View MMIO Registers"), G_CALLBACK(debug_mmio_action_callback) },
    93         { "SaveScene", NULL, N_("_Save Scene"), NULL, N_("Save next rendered scene"), G_CALLBACK(save_scene_action_callback) },
    94         { "SingleStep", GTK_STOCK_REDO, N_("_Single Step"), NULL, N_("Single step"), G_CALLBACK(debug_step_action_callback) },
    95         { "RunTo", GTK_STOCK_GOTO_LAST, N_("Run _To"), NULL, N_("Run to"), G_CALLBACK( debug_runto_action_callback) },
    96         { "SetBreakpoint", GTK_STOCK_CLOSE, N_("_Breakpoint"), NULL, N_("Toggle breakpoint"), G_CALLBACK( debug_breakpoint_action_callback) }
    97 };
    98 static const GtkToggleActionEntry ui_toggle_actions[] = {
    99         { "FullScreen", NULL, "_Full Screen", "<alt>Return", "Toggle full screen video", G_CALLBACK(fullscreen_toggle_callback), 0 },
   100 };
   102 // Menus and toolbars
   103 static const char *ui_description =
   104     "<ui>"
   105     " <menubar name='MainMenu'>"
   106     "  <menu action='FileMenu'>"
   107     "   <menuitem action='LoadBinary'/>"
   108     "   <menuitem action='GdromSettings'/>"
   109     "   <separator/>"
   110     "   <menuitem action='Reset'/>"
   111     "   <menuitem action='Pause'/>"
   112     "   <menuitem action='Run'/>"
   113     "   <menuitem action='Debugger'/>"
   114     "   <separator/>"
   115     "   <menuitem action='LoadState'/>"
   116     "   <menuitem action='SaveState'/>"
   117     "   <separator/>"
   118     "   <menuitem action='Exit'/>"
   119     "  </menu>"
   120     "  <menu action='SettingsMenu'>"
   121     "   <menuitem action='PathSettings'/>"
   122     "   <menuitem action='AudioSettings'/>"
   123     "   <menuitem action='ControllerSettings'/>"
   124     "   <menuitem action='NetworkSettings'/>"
   125     "   <menuitem action='VideoSettings'/>"
   126     "   <separator/>"
   127     "   <menuitem action='FullScreen'/>"
   128     "  </menu>"
   129     "  <menu action='HelpMenu'>"
   130     "   <menuitem action='About'/>"
   131     "  </menu>"
   132     " </menubar>"
   133     " <toolbar name='MainToolbar'>"
   134     "  <toolitem action='GdromMount'/>"
   135     "  <toolitem action='Reset'/>"
   136     "  <toolitem action='Pause'/>"
   137     "  <toolitem action='Run'/>"
   138     "  <separator/>"
   139     "  <toolitem action='LoadState'/>"
   140     "  <toolitem action='SaveState'/>"
   141     " </toolbar>"
   142     " <menubar name='DebugMenu'>"
   143     "  <menu action='FileMenu'>"
   144     "   <menuitem action='GdromSettings'/>"
   145     "   <separator/>"
   146     "   <menuitem action='Reset'/>"
   147     "   <separator/>"
   148     "   <menuitem action='LoadState'/>"
   149     "   <menuitem action='SaveState'/>"
   150     "   <separator/>"
   151     "   <menuitem action='Exit'/>"
   152     "  </menu>"
   153     "  <menu action='DebugMenu'>"
   154     "   <menuitem action='DebugMem'/>"
   155     "   <menuitem action='DebugMmio'/>"
   156     "   <menuitem action='SaveScene'/>"
   157     "   <separator/>"
   158     "   <menuitem action='SetBreakpoint'/>"
   159     "   <menuitem action='Pause'/>"
   160     "   <menuitem action='SingleStep'/>"
   161     "   <menuitem action='RunTo'/>"
   162     "   <menuitem action='Run'/>"
   163     "  </menu>"
   164     "  <menu action='SettingsMenu'>"
   165     "   <menuitem action='PathSettings'/>"
   166     "   <menuitem action='AudioSettings'/>"
   167     "   <menuitem action='ControllerSettings'/>"
   168     "   <menuitem action='NetworkSettings'/>"
   169     "   <menuitem action='VideoSettings'/>"
   170     "   <separator/>"
   171     "   <menuitem action='FullScreen'/>"
   172     "  </menu>"
   173     "  <menu action='HelpMenu'>"
   174     "   <menuitem action='About'/>"
   175     "  </menu>"
   176     " </menubar>"
   177     " <toolbar name='DebugToolbar'>"
   178     "  <toolitem action='GdromMount'/>"
   179     "  <toolitem action='Reset'/>"
   180     "  <toolitem action='Pause'/>"
   181     "  <separator/>"
   182     "  <toolitem action='SingleStep'/>"
   183     "  <toolitem action='RunTo'/>"
   184     "  <toolitem action='Run'/>"
   185     "  <toolitem action='SetBreakpoint'/>"
   186     "  <separator/>"
   187     "  <toolitem action='LoadState'/>"
   188     "  <toolitem action='SaveState'/>"
   189     " </toolbar>"
   190     "</ui>";
   192 gboolean gui_parse_cmdline( int *argc, char **argv[] )
   193 {
   194     gtk_gui_init_ok = gtk_init_check( argc, argv );
   195     return gtk_gui_init_ok;
   196 }
   198 gboolean gtk_gui_disc_changed( gdrom_disc_t disc, const gchar *disc_name, void *ptr )
   199 {
   200     main_window_update_title( main_win );
   201     return TRUE;
   202 }
   204 gboolean gui_init( gboolean withDebug )
   205 {
   206     if( gtk_gui_init_ok ) {
   207         GError *error = NULL;
   208         dreamcast_register_module( &gtk_gui_module );
   209         gtk_gui_alloc_resources();
   211         global_action_group = gtk_action_group_new("MenuActions");
   212         gtk_action_group_set_translation_domain( global_action_group, NULL );
   213         gtk_action_group_add_actions( global_action_group, ui_actions, G_N_ELEMENTS(ui_actions), NULL );
   214         gtk_action_group_add_toggle_actions( global_action_group, ui_toggle_actions, G_N_ELEMENTS(ui_toggle_actions), NULL );
   215         gtk_gui_enable_action("AudioSettings", FALSE);
   216         gtk_gui_enable_action("NetworkSettings", FALSE);
   217         gtk_gui_enable_action("VideoSettings", FALSE);
   219         global_ui_manager = gtk_ui_manager_new();
   220         gtk_ui_manager_set_add_tearoffs(global_ui_manager, TRUE);
   221         gtk_ui_manager_insert_action_group( global_ui_manager, global_action_group, 0 );
   223         if (!gtk_ui_manager_add_ui_from_string (global_ui_manager, ui_description, -1, &error)) {
   224             g_message ("building menus failed: %s", error->message);
   225             g_error_free (error);
   226             exit(1);
   227         }
   228         GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   229         GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu");
   230         GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/MainToolbar");
   232         GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu/FileMenu/GdromSettings");
   233         GtkWidget *gdrommenu = gdrom_menu_new();
   234         gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   235         main_win = main_window_new( lxdream_package_name, menubar, toolbar, accel_group  );
   236         if( withDebug ) {
   237             gtk_gui_show_debugger();
   238         }
   239         register_gdrom_disc_change_hook( gtk_gui_disc_changed, NULL );
   241         return TRUE;
   242     } else {
   243         return FALSE;
   244     }
   245 }
   247 void gui_main_loop( gboolean run )
   248 {
   249     gtk_gui_update();
   250     if( run ) {
   251         dreamcast_run();
   252         gtk_main();
   253     } else {
   254         gtk_main();
   255     }
   256 }
   258 void gui_update_state(void)
   259 {
   260     gtk_gui_update();
   261 }
   263 void gui_set_use_grab( gboolean flag )
   264 {
   265     main_window_set_use_grab(main_win, TRUE);
   266 }    
   268 gboolean gui_error_dialog( const char *msg, ... )
   269 {
   270     if( main_win != NULL ) {
   271         va_list args;
   272         GtkWidget *dialog = 
   273             gtk_message_dialog_new( main_window_get_frame(main_win), GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   274                     GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, NULL );
   275         va_start(args, msg);
   276         gchar *markup = g_markup_vprintf_escaped( msg, args );
   277         va_end( args );
   278         gtk_message_dialog_set_markup( GTK_MESSAGE_DIALOG(dialog), markup );
   279         g_free(markup);
   280         gtk_dialog_run(GTK_DIALOG(dialog));
   281         gtk_widget_destroy(dialog);
   282         return TRUE;
   283     }
   284     return FALSE;
   285 }
   287 void gui_update_io_activity( io_activity_type io, gboolean active )
   288 {
   290 }
   292 void gtk_gui_show_debugger()
   293 {
   294     if( debug_win ) {
   295         debug_window_show(debug_win, TRUE);
   296     } else {
   297         GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   298         GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu");
   299         GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugToolbar");
   300         GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu/FileMenu/GdromSettings");
   301         GtkWidget *gdrommenu = gdrom_menu_new();
   302         gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   303         gchar *title = g_strdup_printf( "%s :: %s", lxdream_package_name, _("Debugger"));
   304         debug_win = debug_window_new( title, menubar, toolbar, accel_group  );
   305         g_free(title);
   306     }
   307 }
   309 void gtk_gui_show_mmio()
   310 {
   311     if( mmio_win ) {
   312         mmio_window_show(mmio_win, TRUE);
   313     } else {
   314         gchar *title = g_strdup_printf( "%s :: %s", lxdream_package_name, _("MMIO Registers"));
   315         mmio_win = mmio_window_new( title );
   316         g_free(title);
   317     }
   318 }
   321 main_window_t gtk_gui_get_main()
   322 {
   323     return main_win;
   324 }
   326 debug_window_t gtk_gui_get_debugger()
   327 {
   328     return debug_win;
   329 }
   331 mmio_window_t gtk_gui_get_mmio()
   332 {
   333     return mmio_win;
   334 }
   336 /**
   337  * Hook called when DC starts running. Just disables the run/step buttons
   338  * and enables the stop button.
   339  */
   340 void gtk_gui_start( void )
   341 {
   342     main_window_set_running( main_win, TRUE );
   343     if( debug_win != NULL ) {
   344         debug_window_set_running( debug_win, TRUE );
   345     }
   346     gtk_gui_nanos = 0;
   347     gettimeofday(&gtk_gui_lasttv,NULL);
   348 }
   350 /**
   351  * Hook called when DC stops running. Enables the run/step buttons
   352  * and disables the stop button.
   353  */
   354 void gtk_gui_stop( void )
   355 {
   356     main_window_set_running( main_win, FALSE );
   357     gtk_gui_update();
   358 }
   360 void gtk_gui_update( void )
   361 {
   362     if( global_action_group ) {
   363         gtk_gui_enable_action("Run", dreamcast_can_run() && !dreamcast_is_running() );
   364         gtk_gui_enable_action("Pause", dreamcast_is_running() );
   365     }
   366     if( debug_win ) {
   367         debug_window_set_running( debug_win, FALSE );
   368         debug_window_update(debug_win);
   369     }
   370     if( mmio_win ) {
   371         mmio_window_update(mmio_win);
   372     }
   373     dump_window_update_all();
   374 }
   376 /**
   377  * Module run-slice. Run the event loop 100 times/second (doesn't really need to be
   378  * any more often than this), and update the speed display 10 times/second. 
   379  *
   380  * Also detect if we're running too fast here and yield for a bit
   381  */
   382 uint32_t gtk_gui_run_slice( uint32_t nanosecs ) 
   383 {
   384     gtk_gui_nanos += nanosecs;
   385     if( gtk_gui_nanos > GUI_TICK_PERIOD ) { /* 10 ms */
   386         gtk_gui_nanos -= GUI_TICK_PERIOD;
   387         gtk_gui_ticks ++;
   388         uint32_t current_period = gtk_gui_ticks * GUI_TICK_PERIOD;
   390         // Run the event loop
   391         while( gtk_events_pending() )
   392             gtk_main_iteration();	
   394         struct timeval tv;
   395         gettimeofday(&tv,NULL);
   396         uint32_t ns = ((tv.tv_sec - gtk_gui_lasttv.tv_sec) * 1000000000) + 
   397         (tv.tv_usec - gtk_gui_lasttv.tv_usec)*1000;
   398         if( (ns * 1.05) < current_period ) {
   399             // We've gotten ahead - sleep for a little bit
   400             struct timespec tv;
   401             tv.tv_sec = 0;
   402             tv.tv_nsec = current_period - ns;
   403             nanosleep(&tv, &tv);
   404         }
   406         /* Update the display every 10 ticks (ie 10 times a second) and 
   407          * save the current tv value */
   408         if( gtk_gui_ticks > 10 ) {
   409             gtk_gui_ticks -= 10;
   411             double speed = (float)( (double)current_period * 100.0 / ns );
   412             gtk_gui_lasttv.tv_sec = tv.tv_sec;
   413             gtk_gui_lasttv.tv_usec = tv.tv_usec;
   414             main_window_set_speed( main_win, speed );
   415         }
   416     }
   417     return nanosecs;
   418 }
   421 PangoFontDescription *gui_fixed_font;
   422 GdkColor gui_colour_normal, gui_colour_changed, gui_colour_error;
   423 GdkColor gui_colour_warn, gui_colour_pc, gui_colour_debug;
   424 GdkColor gui_colour_trace, gui_colour_break, gui_colour_temp_break;
   425 GdkColor gui_colour_white;
   427 void gtk_gui_alloc_resources() {
   428     GdkColormap *map;
   430     gui_colour_normal.red = gui_colour_normal.green = gui_colour_normal.blue = 0;
   431     gui_colour_changed.red = gui_colour_changed.green = 64*256;
   432     gui_colour_changed.blue = 154*256;
   433     gui_colour_error.red = 65535;
   434     gui_colour_error.green = gui_colour_error.blue = 64*256;
   435     gui_colour_pc.red = 32*256;
   436     gui_colour_pc.green = 170*256;
   437     gui_colour_pc.blue = 52*256;
   438     gui_colour_warn = gui_colour_changed;
   439     gui_colour_trace.red = 156*256;
   440     gui_colour_trace.green = 78*256;
   441     gui_colour_trace.blue = 201*256;
   442     gui_colour_debug = gui_colour_pc;
   443     gui_colour_break.red = 65535;
   444     gui_colour_break.green = gui_colour_break.blue = 192*256;
   445     gui_colour_temp_break.red = gui_colour_temp_break.green = 128*256;
   446     gui_colour_temp_break.blue = 32*256;
   447     gui_colour_white.red = gui_colour_white.green = gui_colour_white.blue = 65535;
   449     map = gdk_colormap_new(gdk_visual_get_best(), TRUE);
   450     gdk_colormap_alloc_color(map, &gui_colour_normal, TRUE, TRUE);
   451     gdk_colormap_alloc_color(map, &gui_colour_changed, TRUE, TRUE);
   452     gdk_colormap_alloc_color(map, &gui_colour_error, TRUE, TRUE);
   453     gdk_colormap_alloc_color(map, &gui_colour_warn, TRUE, TRUE);
   454     gdk_colormap_alloc_color(map, &gui_colour_pc, TRUE, TRUE);
   455     gdk_colormap_alloc_color(map, &gui_colour_debug, TRUE, TRUE);
   456     gdk_colormap_alloc_color(map, &gui_colour_trace, TRUE, TRUE);
   457     gdk_colormap_alloc_color(map, &gui_colour_break, TRUE, TRUE);
   458     gdk_colormap_alloc_color(map, &gui_colour_temp_break, TRUE, TRUE);
   459     gdk_colormap_alloc_color(map, &gui_colour_white, TRUE, TRUE);
   460     gui_fixed_font = pango_font_description_from_string("Courier 10");
   461 }
   463 gint gtk_gui_run_property_dialog( const gchar *title, GtkWidget *panel, gtk_dialog_done_fn fn )
   464 {
   465     GtkWidget *dialog =
   466         gtk_dialog_new_with_buttons(title, main_window_get_frame(main_win), 
   467                 GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   468                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
   469                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
   470                 NULL);
   471     gint result;
   472     gtk_widget_show_all(panel);
   473     gtk_container_add( GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), panel );
   474     result = gtk_dialog_run( GTK_DIALOG(dialog) );
   475     if( fn != NULL ) {
   476         fn(panel, result == GTK_RESPONSE_ACCEPT);
   477     }
   478     gtk_widget_destroy( dialog );
   479     return result;
   480 }
   482 void gtk_gui_enable_action( const gchar *action, gboolean enable )
   483 {
   484     gtk_action_set_sensitive( gtk_action_group_get_action( global_action_group, action), enable);
   485 }
   487 static void delete_frame_buffer( guchar *pixels, gpointer buffer )
   488 {
   489     if( buffer != NULL ) {
   490         g_free(buffer);
   491     }
   492 }
   494 GdkPixbuf *gdk_pixbuf_new_from_frame_buffer( frame_buffer_t buffer )
   495 {
   496     return gdk_pixbuf_new_from_data( (unsigned char *)buffer->data, 
   497             GDK_COLORSPACE_RGB,
   498             (buffer->colour_format == COLFMT_BGRA8888),
   499             8,
   500             buffer->width,
   501             buffer->height,
   502             buffer->rowstride,
   503             delete_frame_buffer,
   504             buffer );
   505 }
   507 /**
   508  * Extract the keyval of the key event if no modifier keys were pressed -
   509  * in other words get the keyval of the key by itself. The other way around
   510  * would be to use the hardware keysyms directly rather than the keyvals,
   511  * but the mapping looks to be messier.
   512  */
   513 uint16_t gtk_get_unmodified_keyval( GdkEventKey *event )
   514 {
   515     GdkKeymap *keymap = gdk_keymap_get_default();
   516     guint keyval;
   518     gdk_keymap_translate_keyboard_state( keymap, event->hardware_keycode, 0, 0, &keyval, 
   519                                          NULL, NULL, NULL );
   520     return keyval;
   521 }
   523 gchar *get_absolute_path( const gchar *in_path )
   524 {
   525     char tmp[PATH_MAX];
   526     if( in_path == NULL ) {
   527         return NULL;
   528     }
   529     if( in_path[0] == '/' || in_path[0] == 0 ) {
   530         return g_strdup(in_path);
   531     } else {
   532         getcwd(tmp, sizeof(tmp));
   533         return g_strdup_printf("%s%c%s", tmp, G_DIR_SEPARATOR, in_path);
   534     }
   535 }
.