2 * gtk.c: GTK front end for my puzzle collection.
12 #include <gdk/gdkkeysyms.h>
16 /* ----------------------------------------------------------------------
17 * Error reporting functions used elsewhere.
20 void fatal(char *fmt, ...)
24 fprintf(stderr, "fatal error: ");
27 vfprintf(stderr, fmt, ap);
30 fprintf(stderr, "\n");
34 /* ----------------------------------------------------------------------
35 * GTK front end to puzzles.
45 * This structure holds all the data relevant to a single window.
46 * In principle this would allow us to open multiple independent
47 * puzzle windows, although I can't currently see any real point in
48 * doing so. I'm just coding cleanly because there's no
49 * particularly good reason not to.
63 int bbox_l, bbox_r, bbox_u, bbox_d;
64 int timer_active, timer_id;
69 void frontend_default_colour(frontend *fe, float *output)
71 GdkColor col = fe->window->style->bg[GTK_STATE_NORMAL];
72 output[0] = col.red / 65535.0;
73 output[1] = col.green / 65535.0;
74 output[2] = col.blue / 65535.0;
77 void status_bar(frontend *fe, char *text)
79 assert(fe->statusbar);
81 gtk_statusbar_pop(GTK_STATUSBAR(fe->statusbar), fe->statusctx);
82 gtk_statusbar_push(GTK_STATUSBAR(fe->statusbar), fe->statusctx, text);
85 void start_draw(frontend *fe)
87 fe->gc = gdk_gc_new(fe->area->window);
94 void clip(frontend *fe, int x, int y, int w, int h)
103 gdk_gc_set_clip_rectangle(fe->gc, &rect);
106 void unclip(frontend *fe)
115 gdk_gc_set_clip_rectangle(fe->gc, &rect);
118 void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
119 int align, int colour, char *text)
124 * Find or create the font.
126 for (i = 0; i < fe->nfonts; i++)
127 if (fe->fonts[i].type == fonttype && fe->fonts[i].size == fontsize)
130 if (i == fe->nfonts) {
131 if (fe->fontsize <= fe->nfonts) {
132 fe->fontsize = fe->nfonts + 10;
133 fe->fonts = sresize(fe->fonts, fe->fontsize, struct font);
138 fe->fonts[i].type = fonttype;
139 fe->fonts[i].size = fontsize;
142 * FIXME: Really I should make at least _some_ effort to
143 * pick the correct font.
145 fe->fonts[i].font = gdk_font_load("variable");
149 * Find string dimensions and process alignment.
152 int lb, rb, wid, asc, desc;
154 gdk_string_extents(fe->fonts[i].font, text,
155 &lb, &rb, &wid, &asc, &desc);
156 if (align & ALIGN_VCENTRE)
157 y += asc - (asc+desc)/2;
159 if (align & ALIGN_HCENTRE)
161 else if (align & ALIGN_HRIGHT)
167 * Set colour and actually draw text.
169 gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
170 gdk_draw_string(fe->pixmap, fe->fonts[i].font, fe->gc, x, y, text);
173 void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
175 gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
176 gdk_draw_rectangle(fe->pixmap, fe->gc, 1, x, y, w, h);
179 void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
181 gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
182 gdk_draw_line(fe->pixmap, fe->gc, x1, y1, x2, y2);
185 void draw_polygon(frontend *fe, int *coords, int npoints,
186 int fill, int colour)
188 GdkPoint *points = snewn(npoints, GdkPoint);
191 for (i = 0; i < npoints; i++) {
192 points[i].x = coords[i*2];
193 points[i].y = coords[i*2+1];
196 gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
197 gdk_draw_polygon(fe->pixmap, fe->gc, fill, points, npoints);
202 void draw_update(frontend *fe, int x, int y, int w, int h)
204 if (fe->bbox_l > x ) fe->bbox_l = x ;
205 if (fe->bbox_r < x+w) fe->bbox_r = x+w;
206 if (fe->bbox_u > y ) fe->bbox_u = y ;
207 if (fe->bbox_d < y+h) fe->bbox_d = y+h;
210 void end_draw(frontend *fe)
212 gdk_gc_unref(fe->gc);
215 if (fe->bbox_l < fe->bbox_r && fe->bbox_u < fe->bbox_d) {
216 gdk_draw_pixmap(fe->area->window,
217 fe->area->style->fg_gc[GTK_WIDGET_STATE(fe->area)],
219 fe->bbox_l, fe->bbox_u,
220 fe->bbox_l, fe->bbox_u,
221 fe->bbox_r - fe->bbox_l, fe->bbox_d - fe->bbox_u);
225 static void destroy(GtkWidget *widget, gpointer data)
230 static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
232 frontend *fe = (frontend *)data;
238 if (event->string[0] && !event->string[1])
239 keyval = (unsigned char)event->string[0];
240 else if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up ||
241 event->keyval == GDK_KP_8)
243 else if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down ||
244 event->keyval == GDK_KP_2)
245 keyval = CURSOR_DOWN;
246 else if (event->keyval == GDK_Left || event->keyval == GDK_KP_Left ||
247 event->keyval == GDK_KP_4)
248 keyval = CURSOR_LEFT;
249 else if (event->keyval == GDK_Right || event->keyval == GDK_KP_Right ||
250 event->keyval == GDK_KP_6)
251 keyval = CURSOR_RIGHT;
252 else if (event->keyval == GDK_KP_Home || event->keyval == GDK_KP_7)
253 keyval = CURSOR_UP_LEFT;
254 else if (event->keyval == GDK_KP_End || event->keyval == GDK_KP_1)
255 keyval = CURSOR_DOWN_LEFT;
256 else if (event->keyval == GDK_KP_Page_Up || event->keyval == GDK_KP_9)
257 keyval = CURSOR_UP_RIGHT;
258 else if (event->keyval == GDK_KP_Page_Down || event->keyval == GDK_KP_3)
259 keyval = CURSOR_DOWN_RIGHT;
264 !midend_process_key(fe->me, 0, 0, keyval))
265 gtk_widget_destroy(fe->window);
270 static gint button_event(GtkWidget *widget, GdkEventButton *event,
273 frontend *fe = (frontend *)data;
279 if (event->type != GDK_BUTTON_PRESS)
282 if (event->button == 2 || (event->state & GDK_SHIFT_MASK))
283 button = MIDDLE_BUTTON;
284 else if (event->button == 1)
285 button = LEFT_BUTTON;
286 else if (event->button == 3)
287 button = RIGHT_BUTTON;
289 return FALSE; /* don't even know what button! */
291 if (!midend_process_key(fe->me, event->x, event->y, button))
292 gtk_widget_destroy(fe->window);
297 static gint expose_area(GtkWidget *widget, GdkEventExpose *event,
300 frontend *fe = (frontend *)data;
303 gdk_draw_pixmap(widget->window,
304 widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
306 event->area.x, event->area.y,
307 event->area.x, event->area.y,
308 event->area.width, event->area.height);
313 static gint map_window(GtkWidget *widget, GdkEvent *event,
316 frontend *fe = (frontend *)data;
319 * Apparently we need to do this because otherwise the status
320 * bar will fail to update immediately. Annoying, but there we
323 gtk_widget_queue_draw(fe->window);
328 static gint configure_area(GtkWidget *widget,
329 GdkEventConfigure *event, gpointer data)
331 frontend *fe = (frontend *)data;
335 gdk_pixmap_unref(fe->pixmap);
337 fe->pixmap = gdk_pixmap_new(widget->window, fe->w, fe->h, -1);
339 gc = gdk_gc_new(fe->area->window);
340 gdk_gc_set_foreground(gc, &fe->colours[0]);
341 gdk_draw_rectangle(fe->pixmap, gc, 1, 0, 0, fe->w, fe->h);
344 midend_redraw(fe->me);
349 static gint timer_func(gpointer data)
351 frontend *fe = (frontend *)data;
353 if (fe->timer_active)
354 midend_timer(fe->me, 0.02); /* may clear timer_active */
356 return fe->timer_active;
359 void deactivate_timer(frontend *fe)
361 if (fe->timer_active)
362 gtk_timeout_remove(fe->timer_id);
363 fe->timer_active = FALSE;
366 void activate_timer(frontend *fe)
368 if (!fe->timer_active)
369 fe->timer_id = gtk_timeout_add(20, timer_func, fe);
370 fe->timer_active = TRUE;
373 static void menu_key_event(GtkMenuItem *menuitem, gpointer data)
375 frontend *fe = (frontend *)data;
376 int key = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(menuitem),
378 if (!midend_process_key(fe->me, 0, 0, key))
379 gtk_widget_destroy(fe->window);
382 static void menu_preset_event(GtkMenuItem *menuitem, gpointer data)
384 frontend *fe = (frontend *)data;
385 game_params *params =
386 (game_params *)gtk_object_get_data(GTK_OBJECT(menuitem), "user-data");
389 midend_set_params(fe->me, params);
390 midend_new_game(fe->me, NULL);
391 midend_size(fe->me, &x, &y);
392 gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
397 static GtkWidget *add_menu_item_with_key(frontend *fe, GtkContainer *cont,
400 GtkWidget *menuitem = gtk_menu_item_new_with_label(text);
401 gtk_container_add(cont, menuitem);
402 gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
403 GINT_TO_POINTER(key));
404 gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
405 GTK_SIGNAL_FUNC(menu_key_event), fe);
406 gtk_widget_show(menuitem);
410 static void add_menu_separator(GtkContainer *cont)
412 GtkWidget *menuitem = gtk_menu_item_new();
413 gtk_container_add(cont, menuitem);
414 gtk_widget_show(menuitem);
417 static frontend *new_window(void)
421 GtkWidget *menubar, *menu, *menuitem;
426 fe->me = midend_new(fe);
427 midend_new_game(fe->me, NULL);
429 fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
430 gtk_window_set_title(GTK_WINDOW(fe->window), game_name);
432 gtk_window_set_resizable(GTK_WINDOW(fe->window), FALSE);
434 gtk_window_set_policy(GTK_WINDOW(fe->window), FALSE, FALSE, TRUE);
436 vbox = GTK_BOX(gtk_vbox_new(FALSE, 0));
437 gtk_container_add(GTK_CONTAINER(fe->window), GTK_WIDGET(vbox));
438 gtk_widget_show(GTK_WIDGET(vbox));
440 menubar = gtk_menu_bar_new();
441 gtk_box_pack_start(vbox, menubar, FALSE, FALSE, 0);
442 gtk_widget_show(menubar);
444 menuitem = gtk_menu_item_new_with_label("Game");
445 gtk_container_add(GTK_CONTAINER(menubar), menuitem);
446 gtk_widget_show(menuitem);
448 menu = gtk_menu_new();
449 gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), menu);
451 add_menu_item_with_key(fe, GTK_CONTAINER(menu), "New", 'n');
452 add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Restart", 'r');
454 if ((n = midend_num_presets(fe->me)) > 0) {
458 menuitem = gtk_menu_item_new_with_label("Type");
459 gtk_container_add(GTK_CONTAINER(menu), menuitem);
460 gtk_widget_show(menuitem);
462 submenu = gtk_menu_new();
463 gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu);
465 for (i = 0; i < n; i++) {
469 midend_fetch_preset(fe->me, i, &name, ¶ms);
471 menuitem = gtk_menu_item_new_with_label(name);
472 gtk_container_add(GTK_CONTAINER(submenu), menuitem);
473 gtk_object_set_data(GTK_OBJECT(menuitem), "user-data", params);
474 gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
475 GTK_SIGNAL_FUNC(menu_preset_event), fe);
476 gtk_widget_show(menuitem);
480 add_menu_separator(GTK_CONTAINER(menu));
481 add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Undo", 'u');
482 add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Redo", '\x12');
483 add_menu_separator(GTK_CONTAINER(menu));
484 add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Exit", 'q');
491 fe->colmap = gdk_colormap_get_system();
492 colours = midend_colours(fe->me, &ncolours);
493 fe->ncolours = ncolours;
494 fe->colours = snewn(ncolours, GdkColor);
495 for (i = 0; i < ncolours; i++) {
496 fe->colours[i].red = colours[i*3] * 0xFFFF;
497 fe->colours[i].green = colours[i*3+1] * 0xFFFF;
498 fe->colours[i].blue = colours[i*3+2] * 0xFFFF;
500 success = snewn(ncolours, gboolean);
501 gdk_colormap_alloc_colors(fe->colmap, fe->colours, ncolours,
502 FALSE, FALSE, success);
503 for (i = 0; i < ncolours; i++) {
505 g_error("couldn't allocate colour %d (#%02x%02x%02x)\n",
506 i, fe->colours[i].red >> 8,
507 fe->colours[i].green >> 8,
508 fe->colours[i].blue >> 8);
512 if (midend_wants_statusbar(fe->me)) {
513 fe->statusbar = gtk_statusbar_new();
514 gtk_box_pack_end(vbox, fe->statusbar, FALSE, FALSE, 0);
515 gtk_widget_show(fe->statusbar);
516 fe->statusctx = gtk_statusbar_get_context_id
517 (GTK_STATUSBAR(fe->statusbar), "game");
518 gtk_statusbar_push(GTK_STATUSBAR(fe->statusbar), fe->statusctx,
521 fe->statusbar = NULL;
523 fe->area = gtk_drawing_area_new();
524 midend_size(fe->me, &x, &y);
525 gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
529 gtk_box_pack_end(vbox, fe->area, FALSE, FALSE, 0);
533 fe->nfonts = fe->fontsize = 0;
535 fe->timer_active = FALSE;
537 gtk_signal_connect(GTK_OBJECT(fe->window), "destroy",
538 GTK_SIGNAL_FUNC(destroy), fe);
539 gtk_signal_connect(GTK_OBJECT(fe->window), "key_press_event",
540 GTK_SIGNAL_FUNC(key_event), fe);
541 gtk_signal_connect(GTK_OBJECT(fe->area), "button_press_event",
542 GTK_SIGNAL_FUNC(button_event), fe);
543 gtk_signal_connect(GTK_OBJECT(fe->area), "expose_event",
544 GTK_SIGNAL_FUNC(expose_area), fe);
545 gtk_signal_connect(GTK_OBJECT(fe->window), "map_event",
546 GTK_SIGNAL_FUNC(map_window), fe);
547 gtk_signal_connect(GTK_OBJECT(fe->area), "configure_event",
548 GTK_SIGNAL_FUNC(configure_area), fe);
550 gtk_widget_add_events(GTK_WIDGET(fe->area), GDK_BUTTON_PRESS_MASK);
552 gtk_widget_show(fe->area);
553 gtk_widget_show(fe->window);
558 int main(int argc, char **argv)
562 gtk_init(&argc, &argv);