prompt to kill windows when they are not responding
[mikachu/openbox.git] / openbox / prompt.c
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
2
3    prompt.c for the Openbox window manager
4    Copyright (c) 2008        Dana Jansens
5
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 2 of the License, or
9    (at your option) any later version.
10
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15
16    See the COPYING file for a copy of the GNU General Public License.
17 */
18
19 #include "prompt.h"
20 #include "openbox.h"
21 #include "screen.h"
22 #include "openbox.h"
23 #include "client.h"
24 #include "prop.h"
25 #include "modkeys.h"
26 #include "gettext.h"
27
28 static GList *prompt_list = NULL;
29
30 /* we construct these */
31 static RrAppearance *prompt_a_button;
32 static RrAppearance *prompt_a_focus;
33 static RrAppearance *prompt_a_press;
34 /* we change the max width which would screw with others */
35 static RrAppearance *prompt_a_msg;
36
37 static void prompt_layout(ObPrompt *self);
38 static void render_all(ObPrompt *self);
39 static void render_button(ObPrompt *self, ObPromptElement *e);
40
41 void prompt_startup(gboolean reconfig)
42 {
43     RrColor *c_button, *c_focus, *c_press;
44
45     prompt_a_button = RrAppearanceCopy(ob_rr_theme->a_focused_unpressed_close);
46     prompt_a_focus = RrAppearanceCopy(ob_rr_theme->a_hover_focused_close);
47     prompt_a_press = RrAppearanceCopy(ob_rr_theme->a_focused_pressed_close);
48
49     c_button = prompt_a_button->texture[0].data.mask.color;
50     c_focus = prompt_a_button->texture[0].data.mask.color;
51     c_press = prompt_a_button->texture[0].data.mask.color;
52
53     RrAppearanceRemoveTextures(prompt_a_button);
54     RrAppearanceRemoveTextures(prompt_a_focus);
55     RrAppearanceRemoveTextures(prompt_a_press);
56
57     RrAppearanceAddTextures(prompt_a_button, 1);
58     RrAppearanceAddTextures(prompt_a_focus, 1);
59     RrAppearanceAddTextures(prompt_a_press, 1);
60
61     /* totally cheating here.. */
62     prompt_a_button->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
63     prompt_a_focus->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
64     prompt_a_press->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
65
66     prompt_a_button->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
67     prompt_a_focus->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
68     prompt_a_press->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
69
70     prompt_a_button->texture[0].data.text.color = c_button;
71     prompt_a_focus->texture[0].data.text.color = c_focus;
72     prompt_a_press->texture[0].data.text.color = c_press;
73
74     prompt_a_msg = RrAppearanceCopy(ob_rr_theme->osd_hilite_label);
75     prompt_a_msg->texture[0].data.text.flow = TRUE;
76
77     if (reconfig) {
78         GList *it;
79         for (it = prompt_list; it; it = g_list_next(it)) {
80             ObPrompt *p = it->data;
81             prompt_layout(p);
82             render_all(p);
83         }
84     }
85 }
86
87 void prompt_shutdown(gboolean reconfig)
88 {
89     RrAppearanceFree(prompt_a_button);
90     RrAppearanceFree(prompt_a_focus);
91     RrAppearanceFree(prompt_a_press);
92     RrAppearanceFree(prompt_a_msg);
93 }
94
95 ObPrompt* prompt_new(const gchar *msg,
96                      const ObPromptAnswer *answers, gint n_answers,
97                      gint default_result, gint cancel_result,
98                      ObPromptCallback func, gpointer data)
99 {
100     ObPrompt *self;
101     XSetWindowAttributes attrib;
102     gint i;
103
104     attrib.override_redirect = FALSE;
105     attrib.border_pixel = RrColorPixel(ob_rr_theme->osd_border_color);
106
107     self = g_new0(ObPrompt, 1);
108     self->ref = 1;
109     self->func = func;
110     self->data = data;
111     self->default_result = default_result;
112     self->cancel_result = cancel_result;
113     self->super.type = Window_Prompt;
114     self->super.window = XCreateWindow(ob_display,
115                                        RootWindow(ob_display, ob_screen),
116                                        0, 0, 1, 1, ob_rr_theme->obwidth,
117                                        CopyFromParent, InputOutput,
118                                        CopyFromParent,
119                                        CWOverrideRedirect | CWBorderPixel,
120                                        &attrib);
121
122     /* make it a dialog type window */
123     PROP_SET32(self->super.window, net_wm_window_type, atom,
124                prop_atoms.net_wm_window_type_dialog);
125
126     /* listen for key presses on the window */
127     self->event_mask = KeyPressMask;
128
129     /* we make a copy of this appearance for each prompt */
130     self->a_bg = RrAppearanceCopy(ob_rr_theme->osd_hilite_bg);
131
132     /* set up the text message widow */
133     self->msg.text = g_strdup(msg);
134     self->msg.window = XCreateWindow(ob_display, self->super.window,
135                                      0, 0, 1, 1, 0,
136                                      CopyFromParent, InputOutput,
137                                      CopyFromParent, 0, NULL);
138     XMapWindow(ob_display, self->msg.window);
139
140     /* set up the buttons from the answers */
141
142     self->n_buttons = n_answers;
143     if (!self->n_buttons)
144         self->n_buttons = 1;
145
146     self->button = g_new0(ObPromptElement, self->n_buttons);
147
148     if (n_answers == 0) {
149         g_assert(self->n_buttons == 1); /* should be set to this above.. */
150         self->button[0].text = g_strdup(_("OK"));
151     }
152     else {
153         g_assert(self->n_buttons > 0);
154         for (i = 0; i < self->n_buttons; ++i) {
155             self->button[i].text = g_strdup(answers[i].text);
156             self->button[i].result = answers[i].result;
157         }
158     }
159
160     for (i = 0; i < self->n_buttons; ++i) {
161         self->button[i].window = XCreateWindow(ob_display, self->super.window,
162                                                0, 0, 1, 1, 0,
163                                                CopyFromParent, InputOutput,
164                                                CopyFromParent, 0, NULL);
165         XMapWindow(ob_display, self->button[i].window);
166         g_hash_table_insert(window_map, &self->button[i].window,
167                             PROMPT_AS_WINDOW(self));
168
169         /* listen for button presses on the buttons */
170         XSelectInput(ob_display, self->button[i].window,
171                      ButtonPressMask | ButtonReleaseMask | ButtonMotionMask);
172     }
173
174     prompt_list = g_list_prepend(prompt_list, self);
175
176     return self;
177 }
178
179 void prompt_ref(ObPrompt *self)
180 {
181     ++self->ref;
182 }
183
184 void prompt_unref(ObPrompt *self)
185 {
186     if (self && --self->ref == 0) {
187         gint i;
188
189         prompt_list = g_list_remove(prompt_list, self);
190
191         for (i = 0; i < self->n_buttons; ++i) {
192             g_hash_table_remove(window_map, &self->button[i].window);
193             XDestroyWindow(ob_display, self->button[i].window);
194         }
195
196         XDestroyWindow(ob_display, self->msg.window);
197
198         RrAppearanceFree(self->a_bg);
199
200         XDestroyWindow(ob_display, self->super.window);
201         g_free(self);
202     }
203 }
204
205 static void prompt_layout(ObPrompt *self)
206 {
207     gint l, r, t, b;
208     gint i;
209     gint allbuttonsw, allbuttonsh, buttonx;
210     gint w, h;
211     gint maxw;
212
213     const gint OUTSIDE_MARGIN = 4;
214     const gint MSG_BUTTON_SEPARATION = 4;
215     const gint BUTTON_SEPARATION = 4;
216     const gint BUTTON_VMARGIN = 4;
217     const gint BUTTON_HMARGIN = 12;
218     const gint MAX_WIDTH = 600;
219
220     RrMargins(self->a_bg, &l, &t, &r, &b);
221     l += OUTSIDE_MARGIN;
222     t += OUTSIDE_MARGIN;
223     r += OUTSIDE_MARGIN;
224     b += OUTSIDE_MARGIN;
225
226     {
227         Rect *area = screen_physical_area_all_monitors();
228         maxw = MIN(MAX_WIDTH, area->width*4/5);
229         g_free(area);
230     }
231
232     /* find the button sizes and how much space we need for them */
233     allbuttonsw = allbuttonsh = 0;
234     for (i = 0; i < self->n_buttons; ++i) {
235         gint bw, bh;
236
237         prompt_a_button->texture[0].data.text.string = self->button[i].text;
238         prompt_a_focus->texture[0].data.text.string = self->button[i].text;
239         prompt_a_press->texture[0].data.text.string = self->button[i].text;
240         RrMinSize(prompt_a_button, &bw, &bh);
241         self->button[i].width = bw;
242         self->button[i].height = bh;
243         RrMinSize(prompt_a_focus, &bw, &bh);
244         self->button[i].width = MAX(self->button[i].width, bw);
245         self->button[i].height = MAX(self->button[i].height, bh);
246         RrMinSize(prompt_a_press, &bw, &bh);
247         self->button[i].width = MAX(self->button[i].width, bw);
248         self->button[i].height = MAX(self->button[i].height, bh);
249
250         self->button[i].width += BUTTON_HMARGIN * 2;
251         self->button[i].height += BUTTON_VMARGIN * 2;
252
253         allbuttonsw += self->button[i].width + (i > 0 ? BUTTON_SEPARATION : 0);
254         allbuttonsh = MAX(allbuttonsh, self->button[i].height);
255     }
256
257     self->msg_wbound = MAX(allbuttonsw, maxw);
258
259     /* measure the text message area */
260     prompt_a_msg->texture[0].data.text.string = self->msg.text;
261     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
262     RrMinSize(prompt_a_msg, &self->msg.width, &self->msg.height);
263
264     /* width and height inside the outer margins */
265     w = MAX(self->msg.width, allbuttonsw);
266     h = self->msg.height + MSG_BUTTON_SEPARATION + allbuttonsh;
267
268     /* position the text message */
269     self->msg.x = l + (w - self->msg.width) / 2;
270     self->msg.y = t;
271
272     /* position the button buttons on the right of the dialog */
273     buttonx = l + w;
274     for (i = self->n_buttons - 1; i >= 0; --i) {
275         self->button[i].x = buttonx - self->button[i].width;
276         buttonx -= self->button[i].width + BUTTON_SEPARATION;
277         self->button[i].y = t + h - allbuttonsh;
278         self->button[i].y += (allbuttonsh - self->button[i].height) / 2;
279     }
280
281     /* size and position the toplevel window */
282     self->width = w + l + r;
283     self->height = h + t + b;
284
285     /* move and resize the actual windows */
286     XResizeWindow(ob_display, self->super.window, self->width, self->height);
287     XMoveResizeWindow(ob_display, self->msg.window,
288                       self->msg.x, self->msg.y,
289                       self->msg.width, self->msg.height);
290     for (i = 0; i < self->n_buttons; ++i)
291         XMoveResizeWindow(ob_display, self->button[i].window,
292                           self->button[i].x, self->button[i].y,
293                           self->button[i].width, self->button[i].height);
294 }
295
296 static void render_button(ObPrompt *self, ObPromptElement *e)
297 {
298     RrAppearance *a;
299
300     if (e->pressed) a = prompt_a_press;
301     else if (self->focus == e) a = prompt_a_focus;
302     else a = prompt_a_button;
303
304     a->surface.parent = self->a_bg;
305     a->surface.parentx = e->x;
306     a->surface.parentx = e->y;
307
308     a->texture[0].data.text.string = e->text;
309     RrPaint(a, e->window, e->width, e->height);
310 }
311
312 static void render_all(ObPrompt *self)
313 {
314     gint i;
315
316     RrPaint(self->a_bg, self->super.window, self->width, self->height);
317
318     prompt_a_msg->surface.parent = self->a_bg;
319     prompt_a_msg->surface.parentx = self->msg.x;
320     prompt_a_msg->surface.parenty = self->msg.y;
321
322     prompt_a_msg->texture[0].data.text.string = self->msg.text;
323     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
324     RrPaint(prompt_a_msg, self->msg.window, self->msg.width, self->msg.height);
325
326     for (i = 0; i < self->n_buttons; ++i)
327         render_button(self, &self->button[i]);
328 }
329
330 void prompt_show(ObPrompt *self, ObClient *parent)
331 {
332     XSizeHints hints;
333     gint i;
334
335     if (self->mapped) return;
336
337     /* set the focused button (if not found then the first button is used) */
338     self->focus = &self->button[0];
339     for (i = 0; i < self->n_buttons; ++i)
340         if (self->button[i].result == self->default_result) {
341             self->focus = &self->button[i];
342             break;
343         }
344
345     /* you can't resize the prompt */
346     hints.flags = PMinSize | PMaxSize;
347     hints.min_width = hints.max_width = self->width;
348     hints.min_height = hints.max_height = self->height;
349     XSetWMNormalHints(ob_display, self->super.window, &hints);
350
351     XSetTransientForHint(ob_display, self->super.window,
352                          (parent ? parent->window : 0));
353
354     /* set up the dialog and render it */
355     prompt_layout(self);
356     render_all(self);
357
358     client_manage(self->super.window, self);
359
360     self->mapped = TRUE;
361 }
362
363 void prompt_hide(ObPrompt *self)
364 {
365     XUnmapWindow(ob_display, self->super.window);
366     self->mapped = FALSE;
367 }
368
369 gboolean prompt_key_event(ObPrompt *self, XEvent *e)
370 {
371     gboolean shift;
372     guint shift_mask;
373
374     if (e->type != KeyPress) return FALSE;
375
376     g_print("key 0x%x 0x%x\n", e->xkey.keycode, ob_keycode(OB_KEY_TAB));
377
378     shift_mask = modkeys_key_to_mask(OB_MODKEY_KEY_SHIFT);
379     shift = !!(e->xkey.state & shift_mask);
380
381     /* only accept shift */
382     if (e->xkey.state != 0 && e->xkey.state != shift_mask)
383         return FALSE;
384
385     if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
386         prompt_cancel(self);
387     else if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN) ||
388              e->xkey.keycode == ob_keycode(OB_KEY_SPACE))
389     {
390         if (self->func) self->func(self, self->focus->result, self->data);
391         prompt_hide(self);
392     }
393     else if (e->xkey.keycode == ob_keycode(OB_KEY_TAB) ||
394              e->xkey.keycode == ob_keycode(OB_KEY_LEFT) ||
395              e->xkey.keycode == ob_keycode(OB_KEY_RIGHT))
396     {
397         gint i;
398         gboolean left;
399         ObPromptElement *oldfocus;
400
401         left = e->xkey.keycode == ob_keycode(OB_KEY_LEFT) ||
402             (e->xkey.keycode == ob_keycode(OB_KEY_TAB) && shift);
403         oldfocus = self->focus;
404
405         for (i = 0; i < self->n_buttons; ++i)
406             if (self->focus == &self->button[i]) break;
407         i += (left ? -1 : 1);
408         if (i < 0) i = self->n_buttons - 1;
409         else if (i >= self->n_buttons) i = 0;
410         self->focus = &self->button[i];
411
412         if (oldfocus != self->focus) render_button(self, oldfocus);
413         render_button(self, self->focus);
414     }
415     return TRUE;
416 }
417
418 gboolean prompt_mouse_event(ObPrompt *self, XEvent *e)
419 {
420     gint i;
421     ObPromptElement *but;
422
423     if (e->type != ButtonPress && e->type != ButtonRelease &&
424         e->type != MotionNotify) return;
425
426     /* find the button */
427     but = NULL;
428     for (i = 0; i < self->n_buttons; ++i)
429         if (self->button[i].window ==
430             (e->type == MotionNotify ? e->xmotion.window : e->xbutton.window))
431         {
432             but = &self->button[i];
433             break;
434         }
435     if (!but) return FALSE;
436
437     if (e->type == ButtonPress) {
438         ObPromptElement *oldfocus;
439
440         oldfocus = self->focus;
441
442         but->pressed = TRUE;
443         self->focus = but;
444
445         if (oldfocus != but) render_button(self, oldfocus);
446         render_button(self, but);
447     }
448     else if (e->type == ButtonRelease) {
449         if (but->pressed) {
450             if (self->func) self->func(self, but->result, self->data);
451             prompt_hide(self);
452         }
453     }
454     else if (e->type == MotionNotify) {
455         gboolean press;
456
457         press = (e->xmotion.x >= 0 && e->xmotion.y >= 0 &&
458                  e->xmotion.x < but->width && e->xmotion.y < but->height);
459
460         if (press != but->pressed) {
461             but->pressed = press;
462             render_button(self, but);
463         }
464     }
465     return TRUE;
466 }
467
468 void prompt_cancel(ObPrompt *self)
469 {
470     if (self->func) self->func(self, self->cancel_result, self->data);
471     prompt_hide(self);
472 }