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