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 "event.h"
  27 #include "gettext.h"
  28
  29 static GList *prompt_list = NULL;
  30
  31 /* we construct these */
  32 static RrAppearance *prompt_a_bg;
  33 static RrAppearance *prompt_a_button;
  34 static RrAppearance *prompt_a_focus;
  35 static RrAppearance *prompt_a_press;
  36 /* we change the max width which would screw with others */
  37 static RrAppearance *prompt_a_msg;
  38
  39 static void prompt_layout(ObPrompt *self);
  40 static void render_all(ObPrompt *self);
  41 static void render_button(ObPrompt *self, ObPromptElement *e);
  42 static void prompt_resize(ObPrompt *self, gint w, gint h);
  43
  44 void prompt_startup(gboolean reconfig)
  45 {
  46     RrColor *c_button, *c_focus, *c_press;
  47
  48     /* note: this is not a copy, don't free it */
  49     prompt_a_bg = ob_rr_theme->osd_hilite_bg;
  50
  51     prompt_a_button = RrAppearanceCopy(ob_rr_theme->a_focused_unpressed_close);
  52     prompt_a_focus = RrAppearanceCopy(ob_rr_theme->a_hover_focused_close);
  53     prompt_a_press = RrAppearanceCopy(ob_rr_theme->a_focused_pressed_close);
  54
  55     c_button = prompt_a_button->texture[0].data.mask.color;
  56     c_focus = prompt_a_focus->texture[0].data.mask.color;
  57     c_press = prompt_a_press->texture[0].data.mask.color;
  58
  59     RrAppearanceRemoveTextures(prompt_a_button);
  60     RrAppearanceRemoveTextures(prompt_a_focus);
  61     RrAppearanceRemoveTextures(prompt_a_press);
  62
  63     RrAppearanceAddTextures(prompt_a_button, 1);
  64     RrAppearanceAddTextures(prompt_a_focus, 1);
  65     RrAppearanceAddTextures(prompt_a_press, 1);
  66
  67     /* totally cheating here.. */
  68     prompt_a_button->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
  69     prompt_a_focus->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
  70     prompt_a_press->texture[0] = ob_rr_theme->osd_hilite_label->texture[0];
  71
  72     prompt_a_button->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
  73     prompt_a_focus->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
  74     prompt_a_press->texture[0].data.text.justify = RR_JUSTIFY_CENTER;
  75
  76     prompt_a_button->texture[0].data.text.color = c_button;
  77     prompt_a_focus->texture[0].data.text.color = c_focus;
  78     prompt_a_press->texture[0].data.text.color = c_press;
  79
  80     prompt_a_msg = RrAppearanceCopy(ob_rr_theme->osd_hilite_label);
  81     prompt_a_msg->texture[0].data.text.flow = TRUE;
  82
  83     if (reconfig) {
  84         GList *it;
  85         for (it = prompt_list; it; it = g_list_next(it)) {
  86             ObPrompt *p = it->data;
  87             prompt_layout(p);
  88             render_all(p);
  89         }
  90     }
  91 }
  92
  93 void prompt_shutdown(gboolean reconfig)
  94 {
  95     RrAppearanceFree(prompt_a_button);
  96     RrAppearanceFree(prompt_a_focus);
  97     RrAppearanceFree(prompt_a_press);
  98     RrAppearanceFree(prompt_a_msg);
  99 }
 100
 101 ObPrompt* prompt_new(const gchar *msg,
 102                      const ObPromptAnswer *answers, gint n_answers,
 103                      gint default_result, gint cancel_result,
 104                      ObPromptCallback func, gpointer data)
 105 {
 106     ObPrompt *self;
 107     XSetWindowAttributes attrib;
 108     gint i;
 109
 110     attrib.override_redirect = FALSE;
 111
 112     self = g_new0(ObPrompt, 1);
 113     self->ref = 1;
 114     self->func = func;
 115     self->data = data;
 116     self->default_result = default_result;
 117     self->cancel_result = cancel_result;
 118     self->super.type = Window_Prompt;
 119     self->super.window = XCreateWindow(ob_display,
 120                                        RootWindow(ob_display, ob_screen),
 121                                        0, 0, 1, 1, 0,
 122                                        CopyFromParent, InputOutput,
 123                                        CopyFromParent,
 124                                        CWOverrideRedirect,
 125                                        &attrib);
 126
 127     /* make it a dialog type window */
 128     PROP_SET32(self->super.window, net_wm_window_type, atom,
 129                prop_atoms.net_wm_window_type_dialog);
 130
 131     /* listen for key presses on the window */
 132     self->event_mask = KeyPressMask;
 133
 134     /* set up the text message widow */
 135     self->msg.text = g_strdup(msg);
 136     self->msg.window = XCreateWindow(ob_display, self->super.window,
 137                                      0, 0, 1, 1, 0,
 138                                      CopyFromParent, InputOutput,
 139                                      CopyFromParent, 0, NULL);
 140     XMapWindow(ob_display, self->msg.window);
 141
 142     /* set up the buttons from the answers */
 143
 144     self->n_buttons = n_answers;
 145     if (!self->n_buttons)
 146         self->n_buttons = 1;
 147
 148     self->button = g_new0(ObPromptElement, self->n_buttons);
 149
 150     if (n_answers == 0) {
 151         g_assert(self->n_buttons == 1); /* should be set to this above.. */
 152         self->button[0].text = g_strdup(_("OK"));
 153     }
 154     else {
 155         g_assert(self->n_buttons > 0);
 156         for (i = 0; i < self->n_buttons; ++i) {
 157             self->button[i].text = g_strdup(answers[i].text);
 158             self->button[i].result = answers[i].result;
 159         }
 160     }
 161
 162     for (i = 0; i < self->n_buttons; ++i) {
 163         self->button[i].window = XCreateWindow(ob_display, self->super.window,
 164                                                0, 0, 1, 1, 0,
 165                                                CopyFromParent, InputOutput,
 166                                                CopyFromParent, 0, NULL);
 167         XMapWindow(ob_display, self->button[i].window);
 168         g_hash_table_insert(window_map, &self->button[i].window,
 169                             PROMPT_AS_WINDOW(self));
 170
 171         /* listen for button presses on the buttons */
 172         XSelectInput(ob_display, self->button[i].window,
 173                      ButtonPressMask | ButtonReleaseMask | ButtonMotionMask);
 174     }
 175
 176     prompt_list = g_list_prepend(prompt_list, self);
 177
 178     return self;
 179 }
 180
 181 void prompt_ref(ObPrompt *self)
 182 {
 183     ++self->ref;
 184 }
 185
 186 void prompt_unref(ObPrompt *self)
 187 {
 188     if (self && --self->ref == 0) {
 189         gint i;
 190
 191         prompt_list = g_list_remove(prompt_list, self);
 192
 193         for (i = 0; i < self->n_buttons; ++i) {
 194             g_hash_table_remove(window_map, &self->button[i].window);
 195             XDestroyWindow(ob_display, self->button[i].window);
 196         }
 197
 198         XDestroyWindow(ob_display, self->msg.window);
 199         XDestroyWindow(ob_display, self->super.window);
 200         g_free(self);
 201     }
 202 }
 203
 204 static void prompt_layout(ObPrompt *self)
 205 {
 206     gint l, r, t, b;
 207     gint i;
 208     gint allbuttonsw, allbuttonsh, buttonx;
 209     gint w, h;
 210     gint maxw;
 211
 212     const gint OUTSIDE_MARGIN = 4;
 213     const gint MSG_BUTTON_SEPARATION = 4;
 214     const gint BUTTON_SEPARATION = 4;
 215     const gint BUTTON_VMARGIN = 4;
 216     const gint BUTTON_HMARGIN = 12;
 217     const gint MAX_WIDTH = 600;
 218
 219     RrMargins(prompt_a_bg, &l, &t, &r, &b);
 220     l += OUTSIDE_MARGIN;
 221     t += OUTSIDE_MARGIN;
 222     r += OUTSIDE_MARGIN;
 223     b += OUTSIDE_MARGIN;
 224
 225     {
 226         Rect *area = screen_physical_area_all_monitors();
 227         maxw = MIN(MAX_WIDTH, area->width*4/5);
 228         g_free(area);
 229     }
 230
 231     /* find the button sizes and how much space we need for them */
 232     allbuttonsw = allbuttonsh = 0;
 233     for (i = 0; i < self->n_buttons; ++i) {
 234         gint bw, bh;
 235
 236         prompt_a_button->texture[0].data.text.string = self->button[i].text;
 237         prompt_a_focus->texture[0].data.text.string = self->button[i].text;
 238         prompt_a_press->texture[0].data.text.string = self->button[i].text;
 239         RrMinSize(prompt_a_button, &bw, &bh);
 240         self->button[i].width = bw;
 241         self->button[i].height = bh;
 242         RrMinSize(prompt_a_focus, &bw, &bh);
 243         self->button[i].width = MAX(self->button[i].width, bw);
 244         self->button[i].height = MAX(self->button[i].height, bh);
 245         RrMinSize(prompt_a_press, &bw, &bh);
 246         self->button[i].width = MAX(self->button[i].width, bw);
 247         self->button[i].height = MAX(self->button[i].height, bh);
 248
 249         self->button[i].width += BUTTON_HMARGIN * 2;
 250         self->button[i].height += BUTTON_VMARGIN * 2;
 251
 252         allbuttonsw += self->button[i].width + (i > 0 ? BUTTON_SEPARATION : 0);
 253         allbuttonsh = MAX(allbuttonsh, self->button[i].height);
 254     }
 255
 256     self->msg_wbound = MAX(allbuttonsw, maxw);
 257
 258     /* measure the text message area */
 259     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 260     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 261     RrMinSize(prompt_a_msg, &self->msg.width, &self->msg.height);
 262
 263     /* width and height inside the outer margins */
 264     w = MAX(self->msg.width, allbuttonsw);
 265     h = self->msg.height + MSG_BUTTON_SEPARATION + allbuttonsh;
 266
 267     /* position the text message */
 268     self->msg.x = l + (w - self->msg.width) / 2;
 269     self->msg.y = t;
 270
 271     /* position the button buttons on the right of the dialog */
 272     buttonx = l + w;
 273     for (i = self->n_buttons - 1; i >= 0; --i) {
 274         self->button[i].x = buttonx - self->button[i].width;
 275         buttonx -= self->button[i].width + BUTTON_SEPARATION;
 276         self->button[i].y = t + h - allbuttonsh;
 277         self->button[i].y += (allbuttonsh - self->button[i].height) / 2;
 278     }
 279
 280     /* size and position the toplevel window */
 281     prompt_resize(self, w + l + r, h + t + b);
 282
 283     /* move and resize the internal windows */
 284     XMoveResizeWindow(ob_display, self->msg.window,
 285                       self->msg.x, self->msg.y,
 286                       self->msg.width, self->msg.height);
 287     for (i = 0; i < self->n_buttons; ++i)
 288         XMoveResizeWindow(ob_display, self->button[i].window,
 289                           self->button[i].x, self->button[i].y,
 290                           self->button[i].width, self->button[i].height);
 291 }
 292
 293 static void prompt_resize(ObPrompt *self, gint w, gint h)
 294 {
 295     XConfigureRequestEvent req;
 296     XSizeHints hints;
 297
 298     self->width = w;
 299     self->height = h;
 300
 301     /* the user can't resize the prompt */
 302     hints.flags = PMinSize | PMaxSize;
 303     hints.min_width = hints.max_width = w;
 304     hints.min_height = hints.max_height = h;
 305     XSetWMNormalHints(ob_display, self->super.window, &hints);
 306
 307     if (self->mapped) {
 308         /* send a configure request like a normal client would */
 309         req.type = ConfigureRequest;
 310         req.display = ob_display;
 311         req.parent = RootWindow(ob_display, ob_screen);
 312         req.window = self->super.window;
 313         req.width = w;
 314         req.height = h;
 315         req.value_mask = CWWidth | CWHeight;
 316         XSendEvent(req.display, req.window, FALSE, StructureNotifyMask,
 317                    (XEvent*)&req);
 318     }
 319     else
 320         XResizeWindow(ob_display, self->super.window, w, h);
 321 }
 322
 323 static void render_button(ObPrompt *self, ObPromptElement *e)
 324 {
 325     RrAppearance *a;
 326
 327     if (e->pressed) a = prompt_a_press;
 328     else if (self->focus == e) a = prompt_a_focus;
 329     else a = prompt_a_button;
 330
 331     a->surface.parent = prompt_a_bg;
 332     a->surface.parentx = e->x;
 333     a->surface.parentx = e->y;
 334
 335     a->texture[0].data.text.string = e->text;
 336     RrPaint(a, e->window, e->width, e->height);
 337 }
 338
 339 static void render_all(ObPrompt *self)
 340 {
 341     gint i;
 342
 343     RrPaint(prompt_a_bg, self->super.window, self->width, self->height);
 344
 345     prompt_a_msg->surface.parent = prompt_a_bg;
 346     prompt_a_msg->surface.parentx = self->msg.x;
 347     prompt_a_msg->surface.parenty = self->msg.y;
 348
 349     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 350     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 351     RrPaint(prompt_a_msg, self->msg.window, self->msg.width, self->msg.height);
 352
 353     for (i = 0; i < self->n_buttons; ++i)
 354         render_button(self, &self->button[i]);
 355 }
 356
 357 void prompt_show(ObPrompt *self, ObClient *parent)
 358 {
 359     gint i;
 360
 361     if (self->mapped) {
 362         /* activate the prompt */
 363         PROP_MSG(self->super.window, net_active_window,
 364                  1, /* from an application.. */
 365                  event_curtime,
 366                  0,
 367                  0);
 368         return;
 369     }
 370
 371     /* set the focused button (if not found then the first button is used) */
 372     self->focus = &self->button[0];
 373     for (i = 0; i < self->n_buttons; ++i)
 374         if (self->button[i].result == self->default_result) {
 375             self->focus = &self->button[i];
 376             break;
 377         }
 378
 379     XSetTransientForHint(ob_display, self->super.window,
 380                          (parent ? parent->window : 0));
 381
 382     /* set up the dialog and render it */
 383     prompt_layout(self);
 384     render_all(self);
 385
 386     client_manage(self->super.window, self);
 387
 388     self->mapped = TRUE;
 389 }
 390
 391 void prompt_hide(ObPrompt *self)
 392 {
 393     XUnmapWindow(ob_display, self->super.window);
 394     self->mapped = FALSE;
 395 }
 396
 397 gboolean prompt_key_event(ObPrompt *self, XEvent *e)
 398 {
 399     gboolean shift;
 400     guint shift_mask;
 401
 402     if (e->type != KeyPress) return FALSE;
 403
 404     g_print("key 0x%x 0x%x\n", e->xkey.keycode, ob_keycode(OB_KEY_TAB));
 405
 406     shift_mask = modkeys_key_to_mask(OB_MODKEY_KEY_SHIFT);
 407     shift = !!(e->xkey.state & shift_mask);
 408
 409     /* only accept shift */
 410     if (e->xkey.state != 0 && e->xkey.state != shift_mask)
 411         return FALSE;
 412
 413     if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 414         prompt_cancel(self);
 415     else if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN) ||
 416              e->xkey.keycode == ob_keycode(OB_KEY_SPACE))
 417     {
 418         if (self->func) self->func(self, self->focus->result, self->data);
 419         prompt_hide(self);
 420     }
 421     else if (e->xkey.keycode == ob_keycode(OB_KEY_TAB) ||
 422              e->xkey.keycode == ob_keycode(OB_KEY_LEFT) ||
 423              e->xkey.keycode == ob_keycode(OB_KEY_RIGHT))
 424     {
 425         gint i;
 426         gboolean left;
 427         ObPromptElement *oldfocus;
 428
 429         left = e->xkey.keycode == ob_keycode(OB_KEY_LEFT) ||
 430             (e->xkey.keycode == ob_keycode(OB_KEY_TAB) && shift);
 431         oldfocus = self->focus;
 432
 433         for (i = 0; i < self->n_buttons; ++i)
 434             if (self->focus == &self->button[i]) break;
 435         i += (left ? -1 : 1);
 436         if (i < 0) i = self->n_buttons - 1;
 437         else if (i >= self->n_buttons) i = 0;
 438         self->focus = &self->button[i];
 439
 440         if (oldfocus != self->focus) render_button(self, oldfocus);
 441         render_button(self, self->focus);
 442     }
 443     return TRUE;
 444 }
 445
 446 gboolean prompt_mouse_event(ObPrompt *self, XEvent *e)
 447 {
 448     gint i;
 449     ObPromptElement *but;
 450
 451     if (e->type != ButtonPress && e->type != ButtonRelease &&
 452         e->type != MotionNotify) return FALSE;
 453
 454     /* find the button */
 455     but = NULL;
 456     for (i = 0; i < self->n_buttons; ++i)
 457         if (self->button[i].window ==
 458             (e->type == MotionNotify ? e->xmotion.window : e->xbutton.window))
 459         {
 460             but = &self->button[i];
 461             break;
 462         }
 463     if (!but) return FALSE;
 464
 465     if (e->type == ButtonPress) {
 466         ObPromptElement *oldfocus;
 467
 468         oldfocus = self->focus;
 469
 470         but->pressed = TRUE;
 471         self->focus = but;
 472
 473         if (oldfocus != but) render_button(self, oldfocus);
 474         render_button(self, but);
 475     }
 476     else if (e->type == ButtonRelease) {
 477         if (but->pressed) {
 478             if (self->func) self->func(self, but->result, self->data);
 479             prompt_hide(self);
 480         }
 481     }
 482     else if (e->type == MotionNotify) {
 483         gboolean press;
 484
 485         press = (e->xmotion.x >= 0 && e->xmotion.y >= 0 &&
 486                  e->xmotion.x < but->width && e->xmotion.y < but->height);
 487
 488         if (press != but->pressed) {
 489             but->pressed = press;
 490             render_button(self, but);
 491         }
 492     }
 493     return TRUE;
 494 }
 495
 496 void prompt_cancel(ObPrompt *self)
 497 {
 498     if (self->func) self->func(self, self->cancel_result, self->data);
 499     prompt_hide(self);
 500 }