2 * gtk.c: GTK front end for my puzzle collection.
11 #include <gdk/gdkkeysyms.h>
15 /* ----------------------------------------------------------------------
16 * Error reporting functions used elsewhere.
19 void fatal(char *fmt
, ...)
23 fprintf(stderr
, "fatal error: ");
26 vfprintf(stderr
, fmt
, ap
);
29 fprintf(stderr
, "\n");
33 /* ----------------------------------------------------------------------
34 * GTK front end to puzzles.
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.
54 int bbox_l
, bbox_r
, bbox_u
, bbox_d
;
58 void frontend_default_colour(frontend
*fe
, float *output
)
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;
66 void start_draw(frontend
*fe
)
68 fe
->gc
= gdk_gc_new(fe
->area
->window
);
75 void draw_rect(frontend
*fe
, int x
, int y
, int w
, int h
, int colour
)
77 gdk_gc_set_foreground(fe
->gc
, &fe
->colours
[colour
]);
78 gdk_draw_rectangle(fe
->pixmap
, fe
->gc
, 1, x
, y
, w
, h
);
81 void draw_line(frontend
*fe
, int x1
, int y1
, int x2
, int y2
, int colour
)
83 gdk_gc_set_foreground(fe
->gc
, &fe
->colours
[colour
]);
84 gdk_draw_line(fe
->pixmap
, fe
->gc
, x1
, y1
, x2
, y2
);
87 void draw_polygon(frontend
*fe
, int *coords
, int npoints
,
90 GdkPoint
*points
= snewn(npoints
, GdkPoint
);
93 for (i
= 0; i
< npoints
; i
++) {
94 points
[i
].x
= coords
[i
*2];
95 points
[i
].y
= coords
[i
*2+1];
98 gdk_gc_set_foreground(fe
->gc
, &fe
->colours
[colour
]);
99 gdk_draw_polygon(fe
->pixmap
, fe
->gc
, fill
, points
, npoints
);
104 void draw_update(frontend
*fe
, int x
, int y
, int w
, int h
)
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
;
112 void end_draw(frontend
*fe
)
114 gdk_gc_unref(fe
->gc
);
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
)],
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
);
127 static void destroy(GtkWidget
*widget
, gpointer data
)
132 static gint
key_event(GtkWidget
*widget
, GdkEventKey
*event
, gpointer data
)
134 frontend
*fe
= (frontend
*)data
;
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
)
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
;
154 !midend_process_key(fe
->me
, 0, 0, keyval
))
155 gtk_widget_destroy(fe
->window
);
160 static gint
button_event(GtkWidget
*widget
, GdkEventButton
*event
,
163 frontend
*fe
= (frontend
*)data
;
169 if (event
->type
!= GDK_BUTTON_PRESS
)
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
;
179 return FALSE
; /* don't even know what button! */
181 if (!midend_process_key(fe
->me
, event
->x
, event
->y
, button
))
182 gtk_widget_destroy(fe
->window
);
187 static gint
expose_area(GtkWidget
*widget
, GdkEventExpose
*event
,
190 frontend
*fe
= (frontend
*)data
;
193 gdk_draw_pixmap(widget
->window
,
194 widget
->style
->fg_gc
[GTK_WIDGET_STATE(widget
)],
196 event
->area
.x
, event
->area
.y
,
197 event
->area
.x
, event
->area
.y
,
198 event
->area
.width
, event
->area
.height
);
203 static gint
configure_area(GtkWidget
*widget
,
204 GdkEventConfigure
*event
, gpointer data
)
206 frontend
*fe
= (frontend
*)data
;
209 fe
->pixmap
= gdk_pixmap_new(widget
->window
, fe
->w
, fe
->h
, -1);
211 gc
= gdk_gc_new(fe
->area
->window
);
212 gdk_gc_set_foreground(gc
, &fe
->colours
[0]);
213 gdk_draw_rectangle(fe
->pixmap
, gc
, 1, 0, 0, fe
->w
, fe
->h
);
216 midend_redraw(fe
->me
);
221 static gint
timer_func(gpointer data
)
223 frontend
*fe
= (frontend
*)data
;
225 if (fe
->timer_active
)
226 midend_timer(fe
->me
, 0.02); /* may clear timer_active */
228 return fe
->timer_active
;
231 void deactivate_timer(frontend
*fe
)
233 fe
->timer_active
= FALSE
;
236 void activate_timer(frontend
*fe
)
238 gtk_timeout_add(20, timer_func
, fe
);
239 fe
->timer_active
= TRUE
;
242 static frontend
*new_window(void)
249 fe
->me
= midend_new(fe
);
250 midend_new_game(fe
->me
, NULL
);
252 fe
->window
= gtk_window_new(GTK_WINDOW_TOPLEVEL
);
254 gtk_window_set_resizable(GTK_WINDOW(fe
->window
), FALSE
);
256 gtk_window_set_policy(GTK_WINDOW(fe
->window
), FALSE
, FALSE
, TRUE
);
264 fe
->colmap
= gdk_colormap_get_system();
265 colours
= midend_colours(fe
->me
, &ncolours
);
266 fe
->ncolours
= ncolours
;
267 fe
->colours
= snewn(ncolours
, GdkColor
);
268 for (i
= 0; i
< ncolours
; i
++) {
269 fe
->colours
[i
].red
= colours
[i
*3] * 0xFFFF;
270 fe
->colours
[i
].green
= colours
[i
*3+1] * 0xFFFF;
271 fe
->colours
[i
].blue
= colours
[i
*3+2] * 0xFFFF;
273 success
= snewn(ncolours
, gboolean
);
274 gdk_colormap_alloc_colors(fe
->colmap
, fe
->colours
, ncolours
,
275 FALSE
, FALSE
, success
);
276 for (i
= 0; i
< ncolours
; i
++) {
278 g_error("couldn't allocate colour %d (#%02x%02x%02x)\n",
279 i
, fe
->colours
[i
].red
>> 8,
280 fe
->colours
[i
].green
>> 8,
281 fe
->colours
[i
].blue
>> 8);
285 fe
->area
= gtk_drawing_area_new();
286 midend_size(fe
->me
, &x
, &y
);
287 gtk_drawing_area_size(GTK_DRAWING_AREA(fe
->area
), x
, y
);
291 gtk_container_add(GTK_CONTAINER(fe
->window
), fe
->area
);
295 gtk_signal_connect(GTK_OBJECT(fe
->window
), "destroy",
296 GTK_SIGNAL_FUNC(destroy
), fe
);
297 gtk_signal_connect(GTK_OBJECT(fe
->window
), "key_press_event",
298 GTK_SIGNAL_FUNC(key_event
), fe
);
299 gtk_signal_connect(GTK_OBJECT(fe
->area
), "button_press_event",
300 GTK_SIGNAL_FUNC(button_event
), fe
);
301 gtk_signal_connect(GTK_OBJECT(fe
->area
), "expose_event",
302 GTK_SIGNAL_FUNC(expose_area
), fe
);
303 gtk_signal_connect(GTK_OBJECT(fe
->area
), "configure_event",
304 GTK_SIGNAL_FUNC(configure_area
), fe
);
306 gtk_widget_add_events(GTK_WIDGET(fe
->area
), GDK_BUTTON_PRESS_MASK
);
308 gtk_widget_show(fe
->area
);
309 gtk_widget_show(fe
->window
);
314 int main(int argc
, char **argv
)
318 gtk_init(&argc
, &argv
);