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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 773:146c3210768b
prev755:ab873907b00e
next837:4eae2ddccf9c
author nkeynes
date Mon Jul 28 04:47:28 2008 +0000 (11 years ago)
permissions -rw-r--r--
last change Fix some consistency issues between the cocoa + gtk menus
view annotate diff log raw
     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 gui_init( gboolean withDebug )
   199 {
   200     if( gtk_gui_init_ok ) {
   201         GError *error = NULL;
   202         dreamcast_register_module( &gtk_gui_module );
   203         gtk_gui_alloc_resources();
   205         global_action_group = gtk_action_group_new("MenuActions");
   206         gtk_action_group_set_translation_domain( global_action_group, NULL );
   207         gtk_action_group_add_actions( global_action_group, ui_actions, G_N_ELEMENTS(ui_actions), NULL );
   208         gtk_action_group_add_toggle_actions( global_action_group, ui_toggle_actions, G_N_ELEMENTS(ui_toggle_actions), NULL );
   209         gtk_gui_enable_action("AudioSettings", FALSE);
   210         gtk_gui_enable_action("NetworkSettings", FALSE);
   211         gtk_gui_enable_action("VideoSettings", FALSE);
   213         global_ui_manager = gtk_ui_manager_new();
   214         gtk_ui_manager_set_add_tearoffs(global_ui_manager, TRUE);
   215         gtk_ui_manager_insert_action_group( global_ui_manager, global_action_group, 0 );
   217         if (!gtk_ui_manager_add_ui_from_string (global_ui_manager, ui_description, -1, &error)) {
   218             g_message ("building menus failed: %s", error->message);
   219             g_error_free (error);
   220             exit(1);
   221         }
   222         GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   223         GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu");
   224         GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/MainToolbar");
   226         GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/MainMenu/FileMenu/GdromSettings");
   227         GtkWidget *gdrommenu = gdrom_menu_new();
   228         gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   229         main_win = main_window_new( lxdream_package_name, menubar, toolbar, accel_group  );
   230         main_window_set_use_grab(main_win, TRUE);
   231         if( withDebug ) {
   232             gtk_gui_show_debugger();
   233         }
   235         return TRUE;
   236     } else {
   237         return FALSE;
   238     }
   239 }
   241 void gui_main_loop( gboolean run )
   242 {
   243     gtk_gui_update();
   244     if( run ) {
   245         dreamcast_run();
   246         gtk_main();
   247     } else {
   248         gtk_main();
   249     }
   250 }
   252 void gui_update_state(void)
   253 {
   254     gtk_gui_update();
   255 }
   257 gboolean gui_error_dialog( const char *msg, ... )
   258 {
   259     if( main_win != NULL ) {
   260         va_list args;
   261         GtkWidget *dialog = 
   262             gtk_message_dialog_new( main_window_get_frame(main_win), GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   263                     GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, NULL );
   264         va_start(args, msg);
   265         gchar *markup = g_markup_vprintf_escaped( msg, args );
   266         va_end( args );
   267         gtk_message_dialog_set_markup( GTK_MESSAGE_DIALOG(dialog), markup );
   268         g_free(markup);
   269         gtk_dialog_run(GTK_DIALOG(dialog));
   270         gtk_widget_destroy(dialog);
   271         return TRUE;
   272     }
   273     return FALSE;
   274 }
   276 void gui_update_io_activity( io_activity_type io, gboolean active )
   277 {
   279 }
   281 void gtk_gui_show_debugger()
   282 {
   283     if( debug_win ) {
   284         debug_window_show(debug_win, TRUE);
   285     } else {
   286         GtkAccelGroup *accel_group = gtk_ui_manager_get_accel_group (global_ui_manager);
   287         GtkWidget *menubar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu");
   288         GtkWidget *toolbar = gtk_ui_manager_get_widget(global_ui_manager, "/DebugToolbar");
   289         GtkWidget *gdrommenuitem = gtk_ui_manager_get_widget(global_ui_manager, "/DebugMenu/FileMenu/GdromSettings");
   290         GtkWidget *gdrommenu = gdrom_menu_new();
   291         gtk_menu_item_set_submenu( GTK_MENU_ITEM(gdrommenuitem), gdrommenu );
   292         gchar *title = g_strdup_printf( "%s :: %s", lxdream_package_name, _("Debugger"));
   293         debug_win = debug_window_new( title, menubar, toolbar, accel_group  );
   294         g_free(title);
   295     }
   296 }
   298 void gtk_gui_show_mmio()
   299 {
   300     if( mmio_win ) {
   301         mmio_window_show(mmio_win, TRUE);
   302     } else {
   303         gchar *title = g_strdup_printf( "%s :: %s", lxdream_package_name, _("MMIO Registers"));
   304         mmio_win = mmio_window_new( title );
   305         g_free(title);
   306     }
   307 }
   310 main_window_t gtk_gui_get_main()
   311 {
   312     return main_win;
   313 }
   315 debug_window_t gtk_gui_get_debugger()
   316 {
   317     return debug_win;
   318 }
   320 mmio_window_t gtk_gui_get_mmio()
   321 {
   322     return mmio_win;
   323 }
   325 /**
   326  * Hook called when DC starts running. Just disables the run/step buttons
   327  * and enables the stop button.
   328  */
   329 void gtk_gui_start( void )
   330 {
   331     main_window_set_running( main_win, TRUE );
   332     if( debug_win != NULL ) {
   333         debug_window_set_running( debug_win, TRUE );
   334     }
   335     gtk_gui_nanos = 0;
   336     gettimeofday(&gtk_gui_lasttv,NULL);
   337 }
   339 /**
   340  * Hook called when DC stops running. Enables the run/step buttons
   341  * and disables the stop button.
   342  */
   343 void gtk_gui_stop( void )
   344 {
   345     main_window_set_running( main_win, FALSE );
   346     gtk_gui_update();
   347 }
   349 void gtk_gui_update( void )
   350 {
   351     if( global_action_group ) {
   352         gtk_gui_enable_action("Run", dreamcast_can_run() && !dreamcast_is_running() );
   353         gtk_gui_enable_action("Pause", dreamcast_is_running() );
   354     }
   355     if( debug_win ) {
   356         debug_window_set_running( debug_win, FALSE );
   357         debug_window_update(debug_win);
   358     }
   359     if( mmio_win ) {
   360         mmio_window_update(mmio_win);
   361     }
   362     dump_window_update_all();
   363 }
   365 /**
   366  * Module run-slice. Run the event loop 100 times/second (doesn't really need to be
   367  * any more often than this), and update the speed display 10 times/second. 
   368  *
   369  * Also detect if we're running too fast here and yield for a bit
   370  */
   371 uint32_t gtk_gui_run_slice( uint32_t nanosecs ) 
   372 {
   373     gtk_gui_nanos += nanosecs;
   374     if( gtk_gui_nanos > GUI_TICK_PERIOD ) { /* 10 ms */
   375         gtk_gui_nanos -= GUI_TICK_PERIOD;
   376         gtk_gui_ticks ++;
   377         uint32_t current_period = gtk_gui_ticks * GUI_TICK_PERIOD;
   379         // Run the event loop
   380         while( gtk_events_pending() )
   381             gtk_main_iteration();	
   383         struct timeval tv;
   384         gettimeofday(&tv,NULL);
   385         uint32_t ns = ((tv.tv_sec - gtk_gui_lasttv.tv_sec) * 1000000000) + 
   386         (tv.tv_usec - gtk_gui_lasttv.tv_usec)*1000;
   387         if( (ns * 1.05) < current_period ) {
   388             // We've gotten ahead - sleep for a little bit
   389             struct timespec tv;
   390             tv.tv_sec = 0;
   391             tv.tv_nsec = current_period - ns;
   392             nanosleep(&tv, &tv);
   393         }
   395         /* Update the display every 10 ticks (ie 10 times a second) and 
   396          * save the current tv value */
   397         if( gtk_gui_ticks > 10 ) {
   398             gtk_gui_ticks -= 10;
   400             double speed = (float)( (double)current_period * 100.0 / ns );
   401             gtk_gui_lasttv.tv_sec = tv.tv_sec;
   402             gtk_gui_lasttv.tv_usec = tv.tv_usec;
   403             main_window_set_speed( main_win, speed );
   404         }
   405     }
   406     return nanosecs;
   407 }
   410 PangoFontDescription *gui_fixed_font;
   411 GdkColor gui_colour_normal, gui_colour_changed, gui_colour_error;
   412 GdkColor gui_colour_warn, gui_colour_pc, gui_colour_debug;
   413 GdkColor gui_colour_trace, gui_colour_break, gui_colour_temp_break;
   414 GdkColor gui_colour_white;
   416 void gtk_gui_alloc_resources() {
   417     GdkColormap *map;
   419     gui_colour_normal.red = gui_colour_normal.green = gui_colour_normal.blue = 0;
   420     gui_colour_changed.red = gui_colour_changed.green = 64*256;
   421     gui_colour_changed.blue = 154*256;
   422     gui_colour_error.red = 65535;
   423     gui_colour_error.green = gui_colour_error.blue = 64*256;
   424     gui_colour_pc.red = 32*256;
   425     gui_colour_pc.green = 170*256;
   426     gui_colour_pc.blue = 52*256;
   427     gui_colour_warn = gui_colour_changed;
   428     gui_colour_trace.red = 156*256;
   429     gui_colour_trace.green = 78*256;
   430     gui_colour_trace.blue = 201*256;
   431     gui_colour_debug = gui_colour_pc;
   432     gui_colour_break.red = 65535;
   433     gui_colour_break.green = gui_colour_break.blue = 192*256;
   434     gui_colour_temp_break.red = gui_colour_temp_break.green = 128*256;
   435     gui_colour_temp_break.blue = 32*256;
   436     gui_colour_white.red = gui_colour_white.green = gui_colour_white.blue = 65535;
   438     map = gdk_colormap_new(gdk_visual_get_best(), TRUE);
   439     gdk_colormap_alloc_color(map, &gui_colour_normal, TRUE, TRUE);
   440     gdk_colormap_alloc_color(map, &gui_colour_changed, TRUE, TRUE);
   441     gdk_colormap_alloc_color(map, &gui_colour_error, TRUE, TRUE);
   442     gdk_colormap_alloc_color(map, &gui_colour_warn, TRUE, TRUE);
   443     gdk_colormap_alloc_color(map, &gui_colour_pc, TRUE, TRUE);
   444     gdk_colormap_alloc_color(map, &gui_colour_debug, TRUE, TRUE);
   445     gdk_colormap_alloc_color(map, &gui_colour_trace, TRUE, TRUE);
   446     gdk_colormap_alloc_color(map, &gui_colour_break, TRUE, TRUE);
   447     gdk_colormap_alloc_color(map, &gui_colour_temp_break, TRUE, TRUE);
   448     gdk_colormap_alloc_color(map, &gui_colour_white, TRUE, TRUE);
   449     gui_fixed_font = pango_font_description_from_string("Courier 10");
   450 }
   452 gint gtk_gui_run_property_dialog( const gchar *title, GtkWidget *panel, gtk_dialog_done_fn fn )
   453 {
   454     GtkWidget *dialog =
   455         gtk_dialog_new_with_buttons(title, main_window_get_frame(main_win), 
   456                 GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
   457                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
   458                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
   459                 NULL);
   460     gint result;
   461     gtk_widget_show_all(panel);
   462     gtk_container_add( GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), panel );
   463     result = gtk_dialog_run( GTK_DIALOG(dialog) );
   464     if( fn != NULL ) {
   465         fn(panel, result == GTK_RESPONSE_ACCEPT);
   466     }
   467     gtk_widget_destroy( dialog );
   468     return result;
   469 }
   471 void gtk_gui_enable_action( const gchar *action, gboolean enable )
   472 {
   473     gtk_action_set_sensitive( gtk_action_group_get_action( global_action_group, action), enable);
   474 }
   476 static void delete_frame_buffer( guchar *pixels, gpointer buffer )
   477 {
   478     if( buffer != NULL ) {
   479         g_free(buffer);
   480     }
   481 }
   483 GdkPixbuf *gdk_pixbuf_new_from_frame_buffer( frame_buffer_t buffer )
   484 {
   485     return gdk_pixbuf_new_from_data( (unsigned char *)buffer->data, 
   486             GDK_COLORSPACE_RGB,
   487             (buffer->colour_format == COLFMT_BGRA8888),
   488             8,
   489             buffer->width,
   490             buffer->height,
   491             buffer->rowstride,
   492             delete_frame_buffer,
   493             buffer );
   494 }
   496 /**
   497  * Extract the keyval of the key event if no modifier keys were pressed -
   498  * in other words get the keyval of the key by itself. The other way around
   499  * would be to use the hardware keysyms directly rather than the keyvals,
   500  * but the mapping looks to be messier.
   501  */
   502 uint16_t gtk_get_unmodified_keyval( GdkEventKey *event )
   503 {
   504     GdkKeymap *keymap = gdk_keymap_get_default();
   505     guint keyval;
   507     gdk_keymap_translate_keyboard_state( keymap, event->hardware_keycode, 0, 0, &keyval, 
   508                                          NULL, NULL, NULL );
   509     return keyval;
   510 }
   512 gchar *get_absolute_path( const gchar *in_path )
   513 {
   514     char tmp[PATH_MAX];
   515     if( in_path == NULL ) {
   516         return NULL;
   517     }
   518     if( in_path[0] == '/' || in_path[0] == 0 ) {
   519         return g_strdup(in_path);
   520     } else {
   521         getcwd(tmp, sizeof(tmp));
   522         return g_strdup_printf("%s%c%s", tmp, G_DIR_SEPARATOR, in_path);
   523     }
   524 }
.