gtk.c

   1 /*
   2  * gtk.c: GTK front end for my puzzle collection.
   3  */
   4
   5 #include <stdio.h>
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include <time.h>
   9 #include <stdarg.h>
  10 #include <string.h>
  11
  12 #include <sys/time.h>
  13
  14 #include <gtk/gtk.h>
  15 #include <gdk/gdkkeysyms.h>
  16
  17 #include "puzzles.h"
  18
  19 /* ----------------------------------------------------------------------
  20  * Error reporting functions used elsewhere.
  21  */
  22
  23 void fatal(char *fmt, ...)
  24 {
  25     va_list ap;
  26
  27     fprintf(stderr, "fatal error: ");
  28
  29     va_start(ap, fmt);
  30     vfprintf(stderr, fmt, ap);
  31     va_end(ap);
  32
  33     fprintf(stderr, "\n");
  34     exit(1);
  35 }
  36
  37 /* ----------------------------------------------------------------------
  38  * GTK front end to puzzles.
  39  */
  40
  41 struct font {
  42     GdkFont *font;
  43     int type;
  44     int size;
  45 };
  46
  47 /*
  48  * This structure holds all the data relevant to a single window.
  49  * In principle this would allow us to open multiple independent
  50  * puzzle windows, although I can't currently see any real point in
  51  * doing so. I'm just coding cleanly because there's no
  52  * particularly good reason not to.
  53  */
  54 struct frontend {
  55     GtkWidget *window;
  56     GtkWidget *area;
  57     GtkWidget *statusbar;
  58     guint statusctx;
  59     GdkPixmap *pixmap;
  60     GdkColor *colours;
  61     int ncolours;
  62     GdkColormap *colmap;
  63     int w, h;
  64     midend_data *me;
  65     GdkGC *gc;
  66     int bbox_l, bbox_r, bbox_u, bbox_d;
  67     int timer_active, timer_id;
  68     struct timeval last_time;
  69     struct font *fonts;
  70     int nfonts, fontsize;
  71     config_item *cfg;
  72     int cfg_which, cfgret;
  73     GtkWidget *cfgbox;
  74 };
  75
  76 void frontend_default_colour(frontend *fe, float *output)
  77 {
  78     GdkColor col = fe->window->style->bg[GTK_STATE_NORMAL];
  79     output[0] = col.red / 65535.0;
  80     output[1] = col.green / 65535.0;
  81     output[2] = col.blue / 65535.0;
  82 }
  83
  84 void status_bar(frontend *fe, char *text)
  85 {
  86     assert(fe->statusbar);
  87
  88     gtk_statusbar_pop(GTK_STATUSBAR(fe->statusbar), fe->statusctx);
  89     gtk_statusbar_push(GTK_STATUSBAR(fe->statusbar), fe->statusctx, text);
  90 }
  91
  92 void start_draw(frontend *fe)
  93 {
  94     fe->gc = gdk_gc_new(fe->area->window);
  95     fe->bbox_l = fe->w;
  96     fe->bbox_r = 0;
  97     fe->bbox_u = fe->h;
  98     fe->bbox_d = 0;
  99 }
 100
 101 void clip(frontend *fe, int x, int y, int w, int h)
 102 {
 103     GdkRectangle rect;
 104
 105     rect.x = x;
 106     rect.y = y;
 107     rect.width = w;
 108     rect.height = h;
 109
 110     gdk_gc_set_clip_rectangle(fe->gc, &rect);
 111 }
 112
 113 void unclip(frontend *fe)
 114 {
 115     GdkRectangle rect;
 116
 117     rect.x = 0;
 118     rect.y = 0;
 119     rect.width = fe->w;
 120     rect.height = fe->h;
 121
 122     gdk_gc_set_clip_rectangle(fe->gc, &rect);
 123 }
 124
 125 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
 126                int align, int colour, char *text)
 127 {
 128     int i;
 129
 130     /*
 131      * Find or create the font.
 132      */
 133     for (i = 0; i < fe->nfonts; i++)
 134         if (fe->fonts[i].type == fonttype && fe->fonts[i].size == fontsize)
 135             break;
 136
 137     if (i == fe->nfonts) {
 138         if (fe->fontsize <= fe->nfonts) {
 139             fe->fontsize = fe->nfonts + 10;
 140             fe->fonts = sresize(fe->fonts, fe->fontsize, struct font);
 141         }
 142
 143         fe->nfonts++;
 144
 145         fe->fonts[i].type = fonttype;
 146         fe->fonts[i].size = fontsize;
 147
 148         /*
 149          * FIXME: Really I should make at least _some_ effort to
 150          * pick the correct font.
 151          */
 152         fe->fonts[i].font = gdk_font_load("variable");
 153     }
 154
 155     /*
 156      * Find string dimensions and process alignment.
 157      */
 158     {
 159         int lb, rb, wid, asc, desc;
 160
 161         gdk_string_extents(fe->fonts[i].font, text,
 162                            &lb, &rb, &wid, &asc, &desc);
 163         if (align & ALIGN_VCENTRE)
 164             y += asc - (asc+desc)/2;
 165
 166         if (align & ALIGN_HCENTRE)
 167             x -= wid / 2;
 168         else if (align & ALIGN_HRIGHT)
 169             x -= wid;
 170
 171     }
 172
 173     /*
 174      * Set colour and actually draw text.
 175      */
 176     gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
 177     gdk_draw_string(fe->pixmap, fe->fonts[i].font, fe->gc, x, y, text);
 178 }
 179
 180 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
 181 {
 182     gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
 183     gdk_draw_rectangle(fe->pixmap, fe->gc, 1, x, y, w, h);
 184 }
 185
 186 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
 187 {
 188     gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
 189     gdk_draw_line(fe->pixmap, fe->gc, x1, y1, x2, y2);
 190 }
 191
 192 void draw_polygon(frontend *fe, int *coords, int npoints,
 193                   int fill, int colour)
 194 {
 195     GdkPoint *points = snewn(npoints, GdkPoint);
 196     int i;
 197
 198     for (i = 0; i < npoints; i++) {
 199         points[i].x = coords[i*2];
 200         points[i].y = coords[i*2+1];
 201     }
 202
 203     gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
 204     gdk_draw_polygon(fe->pixmap, fe->gc, fill, points, npoints);
 205
 206     sfree(points);
 207 }
 208
 209 void draw_update(frontend *fe, int x, int y, int w, int h)
 210 {
 211     if (fe->bbox_l > x  ) fe->bbox_l = x  ;
 212     if (fe->bbox_r < x+w) fe->bbox_r = x+w;
 213     if (fe->bbox_u > y  ) fe->bbox_u = y  ;
 214     if (fe->bbox_d < y+h) fe->bbox_d = y+h;
 215 }
 216
 217 void end_draw(frontend *fe)
 218 {
 219     gdk_gc_unref(fe->gc);
 220     fe->gc = NULL;
 221
 222     if (fe->bbox_l < fe->bbox_r && fe->bbox_u < fe->bbox_d) {
 223         gdk_draw_pixmap(fe->area->window,
 224                         fe->area->style->fg_gc[GTK_WIDGET_STATE(fe->area)],
 225                         fe->pixmap,
 226                         fe->bbox_l, fe->bbox_u,
 227                         fe->bbox_l, fe->bbox_u,
 228                         fe->bbox_r - fe->bbox_l, fe->bbox_d - fe->bbox_u);
 229     }
 230 }
 231
 232 static void destroy(GtkWidget *widget, gpointer data)
 233 {
 234     gtk_main_quit();
 235 }
 236
 237 static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
 238 {
 239     frontend *fe = (frontend *)data;
 240     int keyval;
 241
 242     if (!fe->pixmap)
 243         return TRUE;
 244
 245     if (event->string[0] && !event->string[1])
 246         keyval = (unsigned char)event->string[0];
 247     else if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up ||
 248              event->keyval == GDK_KP_8)
 249         keyval = CURSOR_UP;
 250     else if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down ||
 251              event->keyval == GDK_KP_2)
 252         keyval = CURSOR_DOWN;
 253     else if (event->keyval == GDK_Left || event->keyval == GDK_KP_Left ||
 254              event->keyval == GDK_KP_4)
 255         keyval = CURSOR_LEFT;
 256     else if (event->keyval == GDK_Right || event->keyval == GDK_KP_Right ||
 257              event->keyval == GDK_KP_6)
 258         keyval = CURSOR_RIGHT;
 259     else if (event->keyval == GDK_KP_Home || event->keyval == GDK_KP_7)
 260         keyval = CURSOR_UP_LEFT;
 261     else if (event->keyval == GDK_KP_End || event->keyval == GDK_KP_1)
 262         keyval = CURSOR_DOWN_LEFT;
 263     else if (event->keyval == GDK_KP_Page_Up || event->keyval == GDK_KP_9)
 264         keyval = CURSOR_UP_RIGHT;
 265     else if (event->keyval == GDK_KP_Page_Down || event->keyval == GDK_KP_3)
 266         keyval = CURSOR_DOWN_RIGHT;
 267     else
 268         keyval = -1;
 269
 270     if (keyval >= 0 &&
 271         !midend_process_key(fe->me, 0, 0, keyval))
 272         gtk_widget_destroy(fe->window);
 273
 274     return TRUE;
 275 }
 276
 277 static gint button_event(GtkWidget *widget, GdkEventButton *event,
 278                          gpointer data)
 279 {
 280     frontend *fe = (frontend *)data;
 281     int button;
 282
 283     if (!fe->pixmap)
 284         return TRUE;
 285
 286     if (event->type != GDK_BUTTON_PRESS)
 287         return TRUE;
 288
 289     if (event->button == 2 || (event->state & GDK_SHIFT_MASK))
 290         button = MIDDLE_BUTTON;
 291     else if (event->button == 1)
 292         button = LEFT_BUTTON;
 293     else if (event->button == 3)
 294         button = RIGHT_BUTTON;
 295     else
 296         return FALSE;                  /* don't even know what button! */
 297
 298     if (!midend_process_key(fe->me, event->x, event->y, button))
 299         gtk_widget_destroy(fe->window);
 300
 301     return TRUE;
 302 }
 303
 304 static gint expose_area(GtkWidget *widget, GdkEventExpose *event,
 305                         gpointer data)
 306 {
 307     frontend *fe = (frontend *)data;
 308
 309     if (fe->pixmap) {
 310         gdk_draw_pixmap(widget->window,
 311                         widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
 312                         fe->pixmap,
 313                         event->area.x, event->area.y,
 314                         event->area.x, event->area.y,
 315                         event->area.width, event->area.height);
 316     }
 317     return TRUE;
 318 }
 319
 320 static gint map_window(GtkWidget *widget, GdkEvent *event,
 321                        gpointer data)
 322 {
 323     frontend *fe = (frontend *)data;
 324
 325     /*
 326      * Apparently we need to do this because otherwise the status
 327      * bar will fail to update immediately. Annoying, but there we
 328      * go.
 329      */
 330     gtk_widget_queue_draw(fe->window);
 331
 332     return TRUE;
 333 }
 334
 335 static gint configure_area(GtkWidget *widget,
 336                            GdkEventConfigure *event, gpointer data)
 337 {
 338     frontend *fe = (frontend *)data;
 339     GdkGC *gc;
 340
 341     if (fe->pixmap)
 342         gdk_pixmap_unref(fe->pixmap);
 343
 344     fe->pixmap = gdk_pixmap_new(widget->window, fe->w, fe->h, -1);
 345
 346     gc = gdk_gc_new(fe->area->window);
 347     gdk_gc_set_foreground(gc, &fe->colours[0]);
 348     gdk_draw_rectangle(fe->pixmap, gc, 1, 0, 0, fe->w, fe->h);
 349     gdk_gc_unref(gc);
 350
 351     midend_redraw(fe->me);
 352
 353     return TRUE;
 354 }
 355
 356 static gint timer_func(gpointer data)
 357 {
 358     frontend *fe = (frontend *)data;
 359
 360     if (fe->timer_active) {
 361         struct timeval now;
 362         float elapsed;
 363         gettimeofday(&now, NULL);
 364         elapsed = ((now.tv_usec - fe->last_time.tv_usec) * 0.000001F +
 365                    (now.tv_sec - fe->last_time.tv_sec));
 366         midend_timer(fe->me, elapsed);  /* may clear timer_active */
 367         fe->last_time = now;
 368     }
 369
 370     return fe->timer_active;
 371 }
 372
 373 void deactivate_timer(frontend *fe)
 374 {
 375     if (fe->timer_active)
 376         gtk_timeout_remove(fe->timer_id);
 377     fe->timer_active = FALSE;
 378 }
 379
 380 void activate_timer(frontend *fe)
 381 {
 382     if (!fe->timer_active) {
 383         fe->timer_id = gtk_timeout_add(20, timer_func, fe);
 384         gettimeofday(&fe->last_time, NULL);
 385     }
 386     fe->timer_active = TRUE;
 387 }
 388
 389 static void window_destroy(GtkWidget *widget, gpointer data)
 390 {
 391     gtk_main_quit();
 392 }
 393
 394 static void errmsg_button_clicked(GtkButton *button, gpointer data)
 395 {
 396     gtk_widget_destroy(GTK_WIDGET(data));
 397 }
 398
 399 static int win_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
 400 {
 401     GtkObject *cancelbutton = GTK_OBJECT(data);
 402
 403     /*
 404      * `Escape' effectively clicks the cancel button
 405      */
 406     if (event->keyval == GDK_Escape) {
 407         gtk_signal_emit_by_name(GTK_OBJECT(cancelbutton), "clicked");
 408         return TRUE;
 409     }
 410
 411     return FALSE;
 412 }
 413
 414 void error_box(GtkWidget *parent, char *msg)
 415 {
 416     GtkWidget *window, *hbox, *text, *ok;
 417
 418     window = gtk_dialog_new();
 419     text = gtk_label_new(msg);
 420     gtk_misc_set_alignment(GTK_MISC(text), 0.0, 0.0);
 421     hbox = gtk_hbox_new(FALSE, 0);
 422     gtk_box_pack_start(GTK_BOX(hbox), text, FALSE, FALSE, 20);
 423     gtk_box_pack_start(GTK_BOX(GTK_DIALOG(window)->vbox),
 424                        hbox, FALSE, FALSE, 20);
 425     gtk_widget_show(text);
 426     gtk_widget_show(hbox);
 427     gtk_window_set_title(GTK_WINDOW(window), "Error");
 428     gtk_label_set_line_wrap(GTK_LABEL(text), TRUE);
 429     ok = gtk_button_new_with_label("OK");
 430     gtk_box_pack_end(GTK_BOX(GTK_DIALOG(window)->action_area),
 431                      ok, FALSE, FALSE, 0);
 432     gtk_widget_show(ok);
 433     GTK_WIDGET_SET_FLAGS(ok, GTK_CAN_DEFAULT);
 434     gtk_window_set_default(GTK_WINDOW(window), ok);
 435     gtk_signal_connect(GTK_OBJECT(ok), "clicked",
 436                        GTK_SIGNAL_FUNC(errmsg_button_clicked), window);
 437     gtk_signal_connect(GTK_OBJECT(window), "key_press_event",
 438                        GTK_SIGNAL_FUNC(win_key_press), ok);
 439     gtk_window_set_modal(GTK_WINDOW(window), TRUE);
 440     gtk_window_set_transient_for(GTK_WINDOW(window), GTK_WINDOW(parent));
 441     //set_transient_window_pos(parent, window);
 442     gtk_widget_show(window);
 443     gtk_main();
 444 }
 445
 446 static void config_ok_button_clicked(GtkButton *button, gpointer data)
 447 {
 448     frontend *fe = (frontend *)data;
 449     char *err;
 450
 451     err = midend_set_config(fe->me, fe->cfg_which, fe->cfg);
 452
 453     if (err)
 454         error_box(fe->cfgbox, err);
 455     else {
 456         fe->cfgret = TRUE;
 457         gtk_widget_destroy(fe->cfgbox);
 458     }
 459 }
 460
 461 static void config_cancel_button_clicked(GtkButton *button, gpointer data)
 462 {
 463     frontend *fe = (frontend *)data;
 464
 465     gtk_widget_destroy(fe->cfgbox);
 466 }
 467
 468 static int editbox_key(GtkWidget *widget, GdkEventKey *event, gpointer data)
 469 {
 470     /*
 471      * GtkEntry has a nasty habit of eating the Return key, which
 472      * is unhelpful since it doesn't actually _do_ anything with it
 473      * (it calls gtk_widget_activate, but our edit boxes never need
 474      * activating). So I catch Return before GtkEntry sees it, and
 475      * pass it straight on to the parent widget. Effect: hitting
 476      * Return in an edit box will now activate the default button
 477      * in the dialog just like it will everywhere else.
 478      */
 479     if (event->keyval == GDK_Return && widget->parent != NULL) {
 480         gint return_val;
 481         gtk_signal_emit_stop_by_name(GTK_OBJECT(widget), "key_press_event");
 482         gtk_signal_emit_by_name(GTK_OBJECT(widget->parent), "key_press_event",
 483                                 event, &return_val);
 484         return return_val;
 485     }
 486     return FALSE;
 487 }
 488
 489 static void editbox_changed(GtkEditable *ed, gpointer data)
 490 {
 491     config_item *i = (config_item *)data;
 492
 493     sfree(i->sval);
 494     i->sval = dupstr(gtk_entry_get_text(GTK_ENTRY(ed)));
 495 }
 496
 497 static void button_toggled(GtkToggleButton *tb, gpointer data)
 498 {
 499     config_item *i = (config_item *)data;
 500
 501     i->ival = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tb));
 502 }
 503
 504 static void droplist_sel(GtkMenuItem *item, gpointer data)
 505 {
 506     config_item *i = (config_item *)data;
 507
 508     i->ival = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(item),
 509                                                   "user-data"));
 510 }
 511
 512 static int get_config(frontend *fe, int which)
 513 {
 514     GtkWidget *w, *table, *cancel;
 515     char *title;
 516     config_item *i;
 517     int y;
 518
 519     fe->cfg = midend_get_config(fe->me, which, &title);
 520     fe->cfg_which = which;
 521     fe->cfgret = FALSE;
 522
 523     fe->cfgbox = gtk_dialog_new();
 524     gtk_window_set_title(GTK_WINDOW(fe->cfgbox), title);
 525     sfree(title);
 526
 527     w = gtk_button_new_with_label("OK");
 528     gtk_box_pack_end(GTK_BOX(GTK_DIALOG(fe->cfgbox)->action_area),
 529                      w, FALSE, FALSE, 0);
 530     gtk_widget_show(w);
 531     GTK_WIDGET_SET_FLAGS(w, GTK_CAN_DEFAULT);
 532     gtk_window_set_default(GTK_WINDOW(fe->cfgbox), w);
 533     gtk_signal_connect(GTK_OBJECT(w), "clicked",
 534                        GTK_SIGNAL_FUNC(config_ok_button_clicked), fe);
 535
 536     w = gtk_button_new_with_label("Cancel");
 537     gtk_box_pack_end(GTK_BOX(GTK_DIALOG(fe->cfgbox)->action_area),
 538                      w, FALSE, FALSE, 0);
 539     gtk_widget_show(w);
 540     gtk_signal_connect(GTK_OBJECT(w), "clicked",
 541                        GTK_SIGNAL_FUNC(config_cancel_button_clicked), fe);
 542     cancel = w;
 543
 544     table = gtk_table_new(1, 2, FALSE);
 545     y = 0;
 546     gtk_box_pack_end(GTK_BOX(GTK_DIALOG(fe->cfgbox)->vbox),
 547                      table, FALSE, FALSE, 0);
 548     gtk_widget_show(table);
 549
 550     for (i = fe->cfg; i->type != C_END; i++) {
 551         gtk_table_resize(GTK_TABLE(table), y+1, 2);
 552
 553         switch (i->type) {
 554           case C_STRING:
 555             /*
 556              * Edit box with a label beside it.
 557              */
 558
 559             w = gtk_label_new(i->name);
 560             gtk_misc_set_alignment(GTK_MISC(w), 0.0, 0.5);
 561             gtk_table_attach(GTK_TABLE(table), w, 0, 1, y, y+1,
 562                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 563                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 564                              3, 3);
 565             gtk_widget_show(w);
 566
 567             w = gtk_entry_new();
 568             gtk_table_attach(GTK_TABLE(table), w, 1, 2, y, y+1,
 569                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 570                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 571                              3, 3);
 572             gtk_entry_set_text(GTK_ENTRY(w), i->sval);
 573             gtk_signal_connect(GTK_OBJECT(w), "changed",
 574                                GTK_SIGNAL_FUNC(editbox_changed), i);
 575             gtk_signal_connect(GTK_OBJECT(w), "key_press_event",
 576                                GTK_SIGNAL_FUNC(editbox_key), NULL);
 577             gtk_widget_show(w);
 578
 579             break;
 580
 581           case C_BOOLEAN:
 582             /*
 583              * Simple checkbox.
 584              */
 585             w = gtk_check_button_new_with_label(i->name);
 586             gtk_signal_connect(GTK_OBJECT(w), "toggled",
 587                                GTK_SIGNAL_FUNC(button_toggled), i);
 588             gtk_table_attach(GTK_TABLE(table), w, 0, 2, y, y+1,
 589                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 590                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 591                              3, 3);
 592             gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(w), i->ival);
 593             gtk_widget_show(w);
 594             break;
 595
 596           case C_CHOICES:
 597             /*
 598              * Drop-down list (GtkOptionMenu).
 599              */
 600
 601             w = gtk_label_new(i->name);
 602             gtk_misc_set_alignment(GTK_MISC(w), 0.0, 0.5);
 603             gtk_table_attach(GTK_TABLE(table), w, 0, 1, y, y+1,
 604                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 605                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 606                              3, 3);
 607             gtk_widget_show(w);
 608
 609             w = gtk_option_menu_new();
 610             gtk_table_attach(GTK_TABLE(table), w, 1, 2, y, y+1,
 611                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 612                              GTK_EXPAND | GTK_SHRINK | GTK_FILL,
 613                              3, 3);
 614             gtk_widget_show(w);
 615
 616             {
 617                 int c, val;
 618                 char *p, *q, *name;
 619                 GtkWidget *menuitem;
 620                 GtkWidget *menu = gtk_menu_new();
 621
 622                 gtk_option_menu_set_menu(GTK_OPTION_MENU(w), menu);
 623
 624                 c = *i->sval;
 625                 p = i->sval+1;
 626                 val = 0;
 627
 628                 while (*p) {
 629                     q = p;
 630                     while (*q && *q != c)
 631                         q++;
 632
 633                     name = snewn(q-p+1, char);
 634                     strncpy(name, p, q-p);
 635                     name[q-p] = '\0';
 636
 637                     if (*q) q++;       /* eat delimiter */
 638
 639                     menuitem = gtk_menu_item_new_with_label(name);
 640                     gtk_container_add(GTK_CONTAINER(menu), menuitem);
 641                     gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
 642                                         GINT_TO_POINTER(val));
 643                     gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
 644                                        GTK_SIGNAL_FUNC(droplist_sel), i);
 645                     gtk_widget_show(menuitem);
 646
 647                     val++;
 648
 649                     p = q;
 650                 }
 651
 652                 gtk_option_menu_set_history(GTK_OPTION_MENU(w), i->ival);
 653             }
 654
 655             break;
 656         }
 657
 658         y++;
 659     }
 660
 661     gtk_signal_connect(GTK_OBJECT(fe->cfgbox), "destroy",
 662                        GTK_SIGNAL_FUNC(window_destroy), NULL);
 663     gtk_signal_connect(GTK_OBJECT(fe->cfgbox), "key_press_event",
 664                        GTK_SIGNAL_FUNC(win_key_press), cancel);
 665     gtk_window_set_modal(GTK_WINDOW(fe->cfgbox), TRUE);
 666     gtk_window_set_transient_for(GTK_WINDOW(fe->cfgbox),
 667                                  GTK_WINDOW(fe->window));
 668     //set_transient_window_pos(fe->window, fe->cfgbox);
 669     gtk_widget_show(fe->cfgbox);
 670     gtk_main();
 671
 672     free_cfg(fe->cfg);
 673
 674     return fe->cfgret;
 675 }
 676
 677 static void menu_key_event(GtkMenuItem *menuitem, gpointer data)
 678 {
 679     frontend *fe = (frontend *)data;
 680     int key = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(menuitem),
 681                                                   "user-data"));
 682     if (!midend_process_key(fe->me, 0, 0, key))
 683         gtk_widget_destroy(fe->window);
 684 }
 685
 686 static void menu_preset_event(GtkMenuItem *menuitem, gpointer data)
 687 {
 688     frontend *fe = (frontend *)data;
 689     game_params *params =
 690         (game_params *)gtk_object_get_data(GTK_OBJECT(menuitem), "user-data");
 691     int x, y;
 692
 693     midend_set_params(fe->me, params);
 694     midend_new_game(fe->me);
 695     midend_size(fe->me, &x, &y);
 696     gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
 697     fe->w = x;
 698     fe->h = y;
 699 }
 700
 701 static void menu_config_event(GtkMenuItem *menuitem, gpointer data)
 702 {
 703     frontend *fe = (frontend *)data;
 704     int which = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(menuitem),
 705                                                     "user-data"));
 706     int x, y;
 707
 708     if (!get_config(fe, which))
 709         return;
 710
 711     midend_new_game(fe->me);
 712     midend_size(fe->me, &x, &y);
 713     gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
 714     fe->w = x;
 715     fe->h = y;
 716 }
 717
 718 static GtkWidget *add_menu_item_with_key(frontend *fe, GtkContainer *cont,
 719                                          char *text, int key)
 720 {
 721     GtkWidget *menuitem = gtk_menu_item_new_with_label(text);
 722     gtk_container_add(cont, menuitem);
 723     gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
 724                         GINT_TO_POINTER(key));
 725     gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
 726                        GTK_SIGNAL_FUNC(menu_key_event), fe);
 727     gtk_widget_show(menuitem);
 728     return menuitem;
 729 }
 730
 731 static void add_menu_separator(GtkContainer *cont)
 732 {
 733     GtkWidget *menuitem = gtk_menu_item_new();
 734     gtk_container_add(cont, menuitem);
 735     gtk_widget_show(menuitem);
 736 }
 737
 738 static frontend *new_window(void)
 739 {
 740     frontend *fe;
 741     GtkBox *vbox;
 742     GtkWidget *menubar, *menu, *menuitem;
 743     int x, y, n;
 744     time_t t;
 745
 746     fe = snew(frontend);
 747
 748     time(&t);
 749     fe->me = midend_new(fe, &t, sizeof(t));
 750     midend_new_game(fe->me);
 751
 752     fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 753     gtk_window_set_title(GTK_WINDOW(fe->window), game_name);
 754 #if 0
 755     gtk_window_set_resizable(GTK_WINDOW(fe->window), FALSE);
 756 #else
 757     gtk_window_set_policy(GTK_WINDOW(fe->window), FALSE, FALSE, TRUE);
 758 #endif
 759     vbox = GTK_BOX(gtk_vbox_new(FALSE, 0));
 760     gtk_container_add(GTK_CONTAINER(fe->window), GTK_WIDGET(vbox));
 761     gtk_widget_show(GTK_WIDGET(vbox));
 762
 763     menubar = gtk_menu_bar_new();
 764     gtk_box_pack_start(vbox, menubar, FALSE, FALSE, 0);
 765     gtk_widget_show(menubar);
 766
 767     menuitem = gtk_menu_item_new_with_label("Game");
 768     gtk_container_add(GTK_CONTAINER(menubar), menuitem);
 769     gtk_widget_show(menuitem);
 770
 771     menu = gtk_menu_new();
 772     gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), menu);
 773
 774     add_menu_item_with_key(fe, GTK_CONTAINER(menu), "New", 'n');
 775     add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Restart", 'r');
 776
 777     menuitem = gtk_menu_item_new_with_label("Specific...");
 778     gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
 779                         GINT_TO_POINTER(CFG_SEED));
 780     gtk_container_add(GTK_CONTAINER(menu), menuitem);
 781     gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
 782                        GTK_SIGNAL_FUNC(menu_config_event), fe);
 783     gtk_widget_show(menuitem);
 784
 785     if ((n = midend_num_presets(fe->me)) > 0 || game_can_configure) {
 786         GtkWidget *submenu;
 787         int i;
 788
 789         menuitem = gtk_menu_item_new_with_label("Type");
 790         gtk_container_add(GTK_CONTAINER(menubar), menuitem);
 791         gtk_widget_show(menuitem);
 792
 793         submenu = gtk_menu_new();
 794         gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu);
 795
 796         for (i = 0; i < n; i++) {
 797             char *name;
 798             game_params *params;
 799
 800             midend_fetch_preset(fe->me, i, &name, &params);
 801
 802             menuitem = gtk_menu_item_new_with_label(name);
 803             gtk_container_add(GTK_CONTAINER(submenu), menuitem);
 804             gtk_object_set_data(GTK_OBJECT(menuitem), "user-data", params);
 805             gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
 806                                GTK_SIGNAL_FUNC(menu_preset_event), fe);
 807             gtk_widget_show(menuitem);
 808         }
 809
 810         if (game_can_configure) {
 811             menuitem = gtk_menu_item_new_with_label("Custom...");
 812             gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
 813                                 GPOINTER_TO_INT(CFG_SETTINGS));
 814             gtk_container_add(GTK_CONTAINER(submenu), menuitem);
 815             gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
 816                                GTK_SIGNAL_FUNC(menu_config_event), fe);
 817             gtk_widget_show(menuitem);
 818         }
 819     }
 820
 821     add_menu_separator(GTK_CONTAINER(menu));
 822     add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Undo", 'u');
 823     add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Redo", '\x12');
 824     add_menu_separator(GTK_CONTAINER(menu));
 825     add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Exit", 'q');
 826
 827     {
 828         int i, ncolours;
 829         float *colours;
 830         gboolean *success;
 831
 832         fe->colmap = gdk_colormap_get_system();
 833         colours = midend_colours(fe->me, &ncolours);
 834         fe->ncolours = ncolours;
 835         fe->colours = snewn(ncolours, GdkColor);
 836         for (i = 0; i < ncolours; i++) {
 837             fe->colours[i].red = colours[i*3] * 0xFFFF;
 838             fe->colours[i].green = colours[i*3+1] * 0xFFFF;
 839             fe->colours[i].blue = colours[i*3+2] * 0xFFFF;
 840         }
 841         success = snewn(ncolours, gboolean);
 842         gdk_colormap_alloc_colors(fe->colmap, fe->colours, ncolours,
 843                                   FALSE, FALSE, success);
 844         for (i = 0; i < ncolours; i++) {
 845             if (!success[i])
 846                 g_error("couldn't allocate colour %d (#%02x%02x%02x)\n",
 847                         i, fe->colours[i].red >> 8,
 848                         fe->colours[i].green >> 8,
 849                         fe->colours[i].blue >> 8);
 850         }
 851     }
 852
 853     if (midend_wants_statusbar(fe->me)) {
 854         GtkWidget *viewport;
 855         GtkRequisition req;
 856
 857         viewport = gtk_viewport_new(NULL, NULL);
 858         gtk_viewport_set_shadow_type(GTK_VIEWPORT(viewport), GTK_SHADOW_NONE);
 859         fe->statusbar = gtk_statusbar_new();
 860         gtk_container_add(GTK_CONTAINER(viewport), fe->statusbar);
 861         gtk_widget_show(viewport);
 862         gtk_box_pack_end(vbox, viewport, FALSE, FALSE, 0);
 863         gtk_widget_show(fe->statusbar);
 864         fe->statusctx = gtk_statusbar_get_context_id
 865             (GTK_STATUSBAR(fe->statusbar), "game");
 866         gtk_statusbar_push(GTK_STATUSBAR(fe->statusbar), fe->statusctx,
 867                            "test");
 868         gtk_widget_size_request(fe->statusbar, &req);
 869 #if 0
 870         /* For GTK 2.0, should we be using gtk_widget_set_size_request? */
 871 #endif
 872         gtk_widget_set_usize(viewport, x, req.height);
 873     } else
 874         fe->statusbar = NULL;
 875
 876     fe->area = gtk_drawing_area_new();
 877     midend_size(fe->me, &x, &y);
 878     gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
 879     fe->w = x;
 880     fe->h = y;
 881
 882     gtk_box_pack_end(vbox, fe->area, FALSE, FALSE, 0);
 883
 884     fe->pixmap = NULL;
 885     fe->fonts = NULL;
 886     fe->nfonts = fe->fontsize = 0;
 887
 888     fe->timer_active = FALSE;
 889
 890     gtk_signal_connect(GTK_OBJECT(fe->window), "destroy",
 891                        GTK_SIGNAL_FUNC(destroy), fe);
 892     gtk_signal_connect(GTK_OBJECT(fe->window), "key_press_event",
 893                        GTK_SIGNAL_FUNC(key_event), fe);
 894     gtk_signal_connect(GTK_OBJECT(fe->area), "button_press_event",
 895                        GTK_SIGNAL_FUNC(button_event), fe);
 896     gtk_signal_connect(GTK_OBJECT(fe->area), "expose_event",
 897                        GTK_SIGNAL_FUNC(expose_area), fe);
 898     gtk_signal_connect(GTK_OBJECT(fe->window), "map_event",
 899                        GTK_SIGNAL_FUNC(map_window), fe);
 900     gtk_signal_connect(GTK_OBJECT(fe->area), "configure_event",
 901                        GTK_SIGNAL_FUNC(configure_area), fe);
 902
 903     gtk_widget_add_events(GTK_WIDGET(fe->area), GDK_BUTTON_PRESS_MASK);
 904
 905     gtk_widget_show(fe->area);
 906     gtk_widget_show(fe->window);
 907
 908     return fe;
 909 }
 910
 911 int main(int argc, char **argv)
 912 {
 913     gtk_init(&argc, &argv);
 914     (void) new_window();
 915     gtk_main();
 916
 917     return 0;
 918 }