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1 | /* |
2 | * gtk.c: GTK front end for my puzzle collection. |
3 | */ |
4 | |
5 | #include <stdio.h> |
6 | #include <stdlib.h> |
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7 | #include <time.h> |
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8 | #include <stdarg.h> |
9 | |
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10 | #include <gtk/gtk.h> |
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11 | #include <gdk/gdkkeysyms.h> |
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12 | |
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13 | #include "puzzles.h" |
14 | |
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15 | /* ---------------------------------------------------------------------- |
16 | * Error reporting functions used elsewhere. |
17 | */ |
18 | |
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19 | void fatal(char *fmt, ...) |
20 | { |
21 | va_list ap; |
22 | |
23 | fprintf(stderr, "fatal error: "); |
24 | |
25 | va_start(ap, fmt); |
26 | vfprintf(stderr, fmt, ap); |
27 | va_end(ap); |
28 | |
29 | fprintf(stderr, "\n"); |
30 | exit(1); |
31 | } |
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32 | |
33 | /* ---------------------------------------------------------------------- |
34 | * GTK front end to puzzles. |
35 | */ |
36 | |
37 | /* |
38 | * This structure holds all the data relevant to a single window. |
39 | * In principle this would allow us to open multiple independent |
40 | * puzzle windows, although I can't currently see any real point in |
41 | * doing so. I'm just coding cleanly because there's no |
42 | * particularly good reason not to. |
43 | */ |
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44 | struct frontend { |
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45 | GtkWidget *window; |
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46 | GtkWidget *area; |
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47 | GdkPixmap *pixmap; |
48 | GdkColor *colours; |
49 | int ncolours; |
50 | GdkColormap *colmap; |
51 | int w, h; |
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52 | midend_data *me; |
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53 | GdkGC *gc; |
54 | int bbox_l, bbox_r, bbox_u, bbox_d; |
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55 | int timer_active, timer_id; |
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56 | }; |
57 | |
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58 | void frontend_default_colour(frontend *fe, float *output) |
59 | { |
60 | GdkColor col = fe->window->style->bg[GTK_STATE_NORMAL]; |
61 | output[0] = col.red / 65535.0; |
62 | output[1] = col.green / 65535.0; |
63 | output[2] = col.blue / 65535.0; |
64 | } |
65 | |
66 | void start_draw(frontend *fe) |
67 | { |
68 | fe->gc = gdk_gc_new(fe->area->window); |
69 | fe->bbox_l = fe->w; |
70 | fe->bbox_r = 0; |
71 | fe->bbox_u = fe->h; |
72 | fe->bbox_d = 0; |
73 | } |
74 | |
75 | void draw_rect(frontend *fe, int x, int y, int w, int h, int colour) |
76 | { |
77 | gdk_gc_set_foreground(fe->gc, &fe->colours[colour]); |
78 | gdk_draw_rectangle(fe->pixmap, fe->gc, 1, x, y, w, h); |
79 | } |
80 | |
81 | void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour) |
82 | { |
83 | gdk_gc_set_foreground(fe->gc, &fe->colours[colour]); |
84 | gdk_draw_line(fe->pixmap, fe->gc, x1, y1, x2, y2); |
85 | } |
86 | |
87 | void draw_polygon(frontend *fe, int *coords, int npoints, |
88 | int fill, int colour) |
89 | { |
90 | GdkPoint *points = snewn(npoints, GdkPoint); |
91 | int i; |
92 | |
93 | for (i = 0; i < npoints; i++) { |
94 | points[i].x = coords[i*2]; |
95 | points[i].y = coords[i*2+1]; |
96 | } |
97 | |
98 | gdk_gc_set_foreground(fe->gc, &fe->colours[colour]); |
99 | gdk_draw_polygon(fe->pixmap, fe->gc, fill, points, npoints); |
100 | |
101 | sfree(points); |
102 | } |
103 | |
104 | void draw_update(frontend *fe, int x, int y, int w, int h) |
105 | { |
106 | if (fe->bbox_l > x ) fe->bbox_l = x ; |
107 | if (fe->bbox_r < x+w) fe->bbox_r = x+w; |
108 | if (fe->bbox_u > y ) fe->bbox_u = y ; |
109 | if (fe->bbox_d < y+h) fe->bbox_d = y+h; |
110 | } |
111 | |
112 | void end_draw(frontend *fe) |
113 | { |
114 | gdk_gc_unref(fe->gc); |
115 | fe->gc = NULL; |
116 | |
117 | if (fe->bbox_l < fe->bbox_r && fe->bbox_u < fe->bbox_d) { |
118 | gdk_draw_pixmap(fe->area->window, |
119 | fe->area->style->fg_gc[GTK_WIDGET_STATE(fe->area)], |
120 | fe->pixmap, |
121 | fe->bbox_l, fe->bbox_u, |
122 | fe->bbox_l, fe->bbox_u, |
123 | fe->bbox_r - fe->bbox_l, fe->bbox_d - fe->bbox_u); |
124 | } |
125 | } |
126 | |
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127 | static void destroy(GtkWidget *widget, gpointer data) |
128 | { |
129 | gtk_main_quit(); |
130 | } |
131 | |
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132 | static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data) |
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133 | { |
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134 | frontend *fe = (frontend *)data; |
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135 | int keyval; |
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136 | |
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137 | if (!fe->pixmap) |
138 | return TRUE; |
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139 | |
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140 | if (event->string[0] && !event->string[1]) |
141 | keyval = (unsigned char)event->string[0]; |
142 | else if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up) |
143 | keyval = CURSOR_UP; |
144 | else if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down) |
145 | keyval = CURSOR_DOWN; |
146 | else if (event->keyval == GDK_Left || event->keyval == GDK_KP_Left) |
147 | keyval = CURSOR_LEFT; |
148 | else if (event->keyval == GDK_Right || event->keyval == GDK_KP_Right) |
149 | keyval = CURSOR_RIGHT; |
150 | else |
151 | keyval = -1; |
152 | |
153 | if (keyval >= 0 && |
154 | !midend_process_key(fe->me, 0, 0, keyval)) |
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155 | gtk_widget_destroy(fe->window); |
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156 | |
157 | return TRUE; |
158 | } |
159 | |
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160 | static gint button_event(GtkWidget *widget, GdkEventButton *event, |
161 | gpointer data) |
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162 | { |
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163 | frontend *fe = (frontend *)data; |
164 | int button; |
165 | |
166 | if (!fe->pixmap) |
167 | return TRUE; |
168 | |
169 | if (event->type != GDK_BUTTON_PRESS) |
170 | return TRUE; |
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171 | |
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172 | if (event->button == 1) |
173 | button = LEFT_BUTTON; |
174 | else if (event->button == 2) |
175 | button = MIDDLE_BUTTON; |
176 | else if (event->button == 3) |
177 | button = RIGHT_BUTTON; |
178 | else |
179 | return FALSE; /* don't even know what button! */ |
180 | |
181 | if (!midend_process_key(fe->me, event->x, event->y, button)) |
182 | gtk_widget_destroy(fe->window); |
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183 | |
184 | return TRUE; |
185 | } |
186 | |
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187 | static gint expose_area(GtkWidget *widget, GdkEventExpose *event, |
188 | gpointer data) |
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189 | { |
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190 | frontend *fe = (frontend *)data; |
191 | |
192 | if (fe->pixmap) { |
193 | gdk_draw_pixmap(widget->window, |
194 | widget->style->fg_gc[GTK_WIDGET_STATE(widget)], |
195 | fe->pixmap, |
196 | event->area.x, event->area.y, |
197 | event->area.x, event->area.y, |
198 | event->area.width, event->area.height); |
199 | } |
200 | return TRUE; |
201 | } |
202 | |
203 | static gint configure_area(GtkWidget *widget, |
204 | GdkEventConfigure *event, gpointer data) |
205 | { |
206 | frontend *fe = (frontend *)data; |
207 | GdkGC *gc; |
208 | |
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209 | if (fe->pixmap) |
210 | gdk_pixmap_unref(fe->pixmap); |
211 | |
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212 | fe->pixmap = gdk_pixmap_new(widget->window, fe->w, fe->h, -1); |
213 | |
214 | gc = gdk_gc_new(fe->area->window); |
215 | gdk_gc_set_foreground(gc, &fe->colours[0]); |
216 | gdk_draw_rectangle(fe->pixmap, gc, 1, 0, 0, fe->w, fe->h); |
217 | gdk_gc_unref(gc); |
218 | |
219 | midend_redraw(fe->me); |
220 | |
221 | return TRUE; |
222 | } |
223 | |
224 | static gint timer_func(gpointer data) |
225 | { |
226 | frontend *fe = (frontend *)data; |
227 | |
228 | if (fe->timer_active) |
229 | midend_timer(fe->me, 0.02); /* may clear timer_active */ |
230 | |
231 | return fe->timer_active; |
232 | } |
233 | |
234 | void deactivate_timer(frontend *fe) |
235 | { |
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236 | if (fe->timer_active) |
237 | gtk_timeout_remove(fe->timer_id); |
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238 | fe->timer_active = FALSE; |
239 | } |
240 | |
241 | void activate_timer(frontend *fe) |
242 | { |
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243 | if (!fe->timer_active) |
244 | fe->timer_id = gtk_timeout_add(20, timer_func, fe); |
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245 | fe->timer_active = TRUE; |
246 | } |
247 | |
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248 | static void menu_key_event(GtkMenuItem *menuitem, gpointer data) |
249 | { |
250 | frontend *fe = (frontend *)data; |
251 | int key = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(menuitem), |
252 | "user-data")); |
253 | if (!midend_process_key(fe->me, 0, 0, key)) |
254 | gtk_widget_destroy(fe->window); |
255 | } |
256 | |
257 | static void menu_preset_event(GtkMenuItem *menuitem, gpointer data) |
258 | { |
259 | frontend *fe = (frontend *)data; |
260 | game_params *params = |
261 | (game_params *)gtk_object_get_data(GTK_OBJECT(menuitem), "user-data"); |
262 | int x, y; |
263 | |
264 | midend_set_params(fe->me, params); |
265 | midend_new_game(fe->me, NULL); |
266 | midend_size(fe->me, &x, &y); |
267 | gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y); |
268 | fe->w = x; |
269 | fe->h = y; |
270 | } |
271 | |
272 | static GtkWidget *add_menu_item_with_key(frontend *fe, GtkContainer *cont, |
273 | char *text, int key) |
274 | { |
275 | GtkWidget *menuitem = gtk_menu_item_new_with_label(text); |
276 | gtk_container_add(cont, menuitem); |
277 | gtk_object_set_data(GTK_OBJECT(menuitem), "user-data", |
278 | GINT_TO_POINTER(key)); |
279 | gtk_signal_connect(GTK_OBJECT(menuitem), "activate", |
280 | GTK_SIGNAL_FUNC(menu_key_event), fe); |
281 | gtk_widget_show(menuitem); |
282 | return menuitem; |
283 | } |
284 | |
285 | static void add_menu_separator(GtkContainer *cont) |
286 | { |
287 | GtkWidget *menuitem = gtk_menu_item_new(); |
288 | gtk_container_add(cont, menuitem); |
289 | gtk_widget_show(menuitem); |
290 | } |
291 | |
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292 | static frontend *new_window(void) |
293 | { |
294 | frontend *fe; |
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295 | GtkBox *vbox; |
296 | GtkWidget *menubar, *menu, *menuitem; |
297 | int x, y, n; |
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298 | |
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299 | fe = snew(frontend); |
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300 | |
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301 | fe->me = midend_new(fe); |
302 | midend_new_game(fe->me, NULL); |
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303 | |
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304 | fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL); |
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305 | #if 0 |
306 | gtk_window_set_resizable(GTK_WINDOW(fe->window), FALSE); |
307 | #else |
308 | gtk_window_set_policy(GTK_WINDOW(fe->window), FALSE, FALSE, TRUE); |
309 | #endif |
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310 | vbox = GTK_BOX(gtk_vbox_new(FALSE, 0)); |
311 | gtk_container_add(GTK_CONTAINER(fe->window), GTK_WIDGET(vbox)); |
312 | gtk_widget_show(GTK_WIDGET(vbox)); |
313 | |
314 | menubar = gtk_menu_bar_new(); |
315 | gtk_box_pack_start(vbox, menubar, FALSE, FALSE, 0); |
316 | gtk_widget_show(menubar); |
317 | |
318 | menuitem = gtk_menu_item_new_with_label("Game"); |
319 | gtk_container_add(GTK_CONTAINER(menubar), menuitem); |
320 | gtk_widget_show(menuitem); |
321 | |
322 | menu = gtk_menu_new(); |
323 | gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), menu); |
324 | |
325 | add_menu_item_with_key(fe, GTK_CONTAINER(menu), "New", 'n'); |
326 | add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Restart", 'r'); |
327 | |
328 | if ((n = midend_num_presets(fe->me)) > 0) { |
329 | GtkWidget *submenu; |
330 | int i; |
331 | |
332 | menuitem = gtk_menu_item_new_with_label("Type"); |
333 | gtk_container_add(GTK_CONTAINER(menu), menuitem); |
334 | gtk_widget_show(menuitem); |
335 | |
336 | submenu = gtk_menu_new(); |
337 | gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu); |
338 | |
339 | for (i = 0; i < n; i++) { |
340 | char *name; |
341 | game_params *params; |
342 | |
343 | midend_fetch_preset(fe->me, i, &name, ¶ms); |
344 | |
345 | menuitem = gtk_menu_item_new_with_label(name); |
346 | gtk_container_add(GTK_CONTAINER(submenu), menuitem); |
347 | gtk_object_set_data(GTK_OBJECT(menuitem), "user-data", params); |
348 | gtk_signal_connect(GTK_OBJECT(menuitem), "activate", |
349 | GTK_SIGNAL_FUNC(menu_preset_event), fe); |
350 | gtk_widget_show(menuitem); |
351 | } |
352 | } |
353 | |
354 | add_menu_separator(GTK_CONTAINER(menu)); |
355 | add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Undo", 'u'); |
356 | add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Redo", '\x12'); |
357 | add_menu_separator(GTK_CONTAINER(menu)); |
358 | add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Exit", 'q'); |
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359 | |
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360 | { |
361 | int i, ncolours; |
362 | float *colours; |
363 | gboolean *success; |
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364 | |
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365 | fe->colmap = gdk_colormap_get_system(); |
366 | colours = midend_colours(fe->me, &ncolours); |
367 | fe->ncolours = ncolours; |
368 | fe->colours = snewn(ncolours, GdkColor); |
369 | for (i = 0; i < ncolours; i++) { |
370 | fe->colours[i].red = colours[i*3] * 0xFFFF; |
371 | fe->colours[i].green = colours[i*3+1] * 0xFFFF; |
372 | fe->colours[i].blue = colours[i*3+2] * 0xFFFF; |
373 | } |
374 | success = snewn(ncolours, gboolean); |
375 | gdk_colormap_alloc_colors(fe->colmap, fe->colours, ncolours, |
376 | FALSE, FALSE, success); |
377 | for (i = 0; i < ncolours; i++) { |
378 | if (!success[i]) |
379 | g_error("couldn't allocate colour %d (#%02x%02x%02x)\n", |
380 | i, fe->colours[i].red >> 8, |
381 | fe->colours[i].green >> 8, |
382 | fe->colours[i].blue >> 8); |
383 | } |
384 | } |
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385 | |
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386 | fe->area = gtk_drawing_area_new(); |
387 | midend_size(fe->me, &x, &y); |
388 | gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y); |
389 | fe->w = x; |
390 | fe->h = y; |
391 | |
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392 | gtk_box_pack_end(vbox, fe->area, FALSE, FALSE, 0); |
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393 | |
394 | fe->pixmap = NULL; |
395 | |
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396 | fe->timer_active = FALSE; |
397 | |
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398 | gtk_signal_connect(GTK_OBJECT(fe->window), "destroy", |
399 | GTK_SIGNAL_FUNC(destroy), fe); |
400 | gtk_signal_connect(GTK_OBJECT(fe->window), "key_press_event", |
401 | GTK_SIGNAL_FUNC(key_event), fe); |
402 | gtk_signal_connect(GTK_OBJECT(fe->area), "button_press_event", |
403 | GTK_SIGNAL_FUNC(button_event), fe); |
404 | gtk_signal_connect(GTK_OBJECT(fe->area), "expose_event", |
405 | GTK_SIGNAL_FUNC(expose_area), fe); |
406 | gtk_signal_connect(GTK_OBJECT(fe->area), "configure_event", |
407 | GTK_SIGNAL_FUNC(configure_area), fe); |
408 | |
409 | gtk_widget_add_events(GTK_WIDGET(fe->area), GDK_BUTTON_PRESS_MASK); |
410 | |
411 | gtk_widget_show(fe->area); |
412 | gtk_widget_show(fe->window); |
413 | |
414 | return fe; |
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415 | } |
416 | |
417 | int main(int argc, char **argv) |
418 | { |
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419 | srand(time(NULL)); |
420 | |
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421 | gtk_init(&argc, &argv); |
422 | (void) new_window(); |
423 | gtk_main(); |
424 | |
425 | return 0; |
426 | } |