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, (parent ? parent->window : 0),
 352                          self->super.window);
 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 void prompt_key_event(ObPrompt *self, XEvent *e)
 370 {
 371     gboolean shift;
 372     guint shift_mask;
 373
 374     if (e->type != KeyPress) return;
 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;
 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         if (self->func) self->func(self, self->focus->result, self->data);
 389         prompt_hide(self);
 390     }
 391     else if (e->xkey.keycode == ob_keycode(OB_KEY_TAB)) {
 392         gint i;
 393         ObPromptElement *oldfocus;
 394
 395         oldfocus = self->focus;
 396
 397         for (i = 0; i < self->n_buttons; ++i)
 398             if (self->focus == &self->button[i]) break;
 399         i += (shift ? -1 : 1);
 400         if (i < 0) i = self->n_buttons - 1;
 401         else if (i >= self->n_buttons) i = 0;
 402         self->focus = &self->button[i];
 403
 404         if (oldfocus != self->focus) render_button(self, oldfocus);
 405         render_button(self, self->focus);
 406     }
 407 }
 408
 409 void prompt_mouse_event(ObPrompt *self, XEvent *e)
 410 {
 411     gint i;
 412     ObPromptElement *but;
 413
 414     if (e->type != ButtonPress && e->type != ButtonRelease &&
 415         e->type != MotionNotify) return;
 416
 417     /* find the button */
 418     for (i = 0; i < self->n_buttons; ++i)
 419         if (self->button[i].window ==
 420             (e->type == MotionNotify ? e->xmotion.window : e->xbutton.window))
 421         {
 422             but = &self->button[i];
 423             break;
 424         }
 425     g_assert(but != NULL);
 426
 427     if (e->type == ButtonPress) {
 428         ObPromptElement *oldfocus;
 429
 430         oldfocus = self->focus;
 431
 432         but->pressed = TRUE;
 433         self->focus = but;
 434
 435         if (oldfocus != but) render_button(self, oldfocus);
 436         render_button(self, but);
 437     }
 438     else if (e->type == ButtonRelease) {
 439         if (but->pressed) {
 440             if (self->func) self->func(self, but->result, self->data);
 441             prompt_hide(self);
 442         }
 443     }
 444     else if (e->type == MotionNotify) {
 445         gboolean press;
 446
 447         press = (e->xmotion.x >= 0 && e->xmotion.y >= 0 &&
 448                  e->xmotion.x < but->width && e->xmotion.y < but->height);
 449
 450         if (press != but->pressed) {
 451             but->pressed = press;
 452             render_button(self, but);
 453         }
 454     }
 455 }
 456
 457 void prompt_cancel(ObPrompt *self)
 458 {
 459     if (self->func) self->func(self, self->cancel_result, self->data);
 460     prompt_hide(self);
 461 }