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 "client.h"
  23 #include "obt/display.h"
  24 #include "obt/keyboard.h"
  25 #include "obt/prop.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 = OB_WINDOW_CLASS_PROMPT;
 114     self->super.window = XCreateWindow(obt_display, obt_root(ob_screen),
 115                                        0, 0, 1, 1, ob_rr_theme->obwidth,
 116                                        CopyFromParent, InputOutput,
 117                                        CopyFromParent,
 118                                        CWOverrideRedirect | CWBorderPixel,
 119                                        &attrib);
 120
 121     /* make it a dialog type window */
 122     OBT_PROP_SET32(self->super.window, NET_WM_WINDOW_TYPE, ATOM,
 123                    OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_DIALOG));
 124
 125     /* listen for key presses on the window */
 126     self->event_mask = KeyPressMask;
 127
 128     /* we make a copy of this appearance for each prompt */
 129     self->a_bg = RrAppearanceCopy(ob_rr_theme->osd_hilite_bg);
 130
 131     /* set up the text message widow */
 132     self->msg.text = g_strdup(msg);
 133     self->msg.window = XCreateWindow(obt_display, self->super.window,
 134                                      0, 0, 1, 1, 0,
 135                                      CopyFromParent, InputOutput,
 136                                      CopyFromParent, 0, NULL);
 137     XMapWindow(obt_display, self->msg.window);
 138
 139     /* set up the buttons from the answers */
 140
 141     self->n_buttons = n_answers;
 142     if (!self->n_buttons)
 143         self->n_buttons = 1;
 144
 145     self->button = g_new0(ObPromptElement, self->n_buttons);
 146
 147     if (n_answers == 0) {
 148         g_assert(self->n_buttons == 1); /* should be set to this above.. */
 149         self->button[0].text = g_strdup(_("OK"));
 150     }
 151     else {
 152         g_assert(self->n_buttons > 0);
 153         for (i = 0; i < self->n_buttons; ++i) {
 154             self->button[i].text = g_strdup(answers[i].text);
 155             self->button[i].result = answers[i].result;
 156         }
 157     }
 158
 159     for (i = 0; i < self->n_buttons; ++i) {
 160         self->button[i].window = XCreateWindow(obt_display, self->super.window,
 161                                                0, 0, 1, 1, 0,
 162                                                CopyFromParent, InputOutput,
 163                                                CopyFromParent, 0, NULL);
 164         XMapWindow(obt_display, self->button[i].window);
 165         window_add(&self->button[i].window, PROMPT_AS_WINDOW(self));
 166
 167         /* listen for button presses on the buttons */
 168         XSelectInput(obt_display, self->button[i].window,
 169                      ButtonPressMask | ButtonReleaseMask | ButtonMotionMask);
 170     }
 171
 172     prompt_list = g_list_prepend(prompt_list, self);
 173
 174     return self;
 175 }
 176
 177 void prompt_ref(ObPrompt *self)
 178 {
 179     ++self->ref;
 180 }
 181
 182 void prompt_unref(ObPrompt *self)
 183 {
 184     if (self && --self->ref == 0) {
 185         gint i;
 186
 187         prompt_list = g_list_remove(prompt_list, self);
 188
 189         for (i = 0; i < self->n_buttons; ++i) {
 190             window_remove(self->button[i].window);
 191             XDestroyWindow(obt_display, self->button[i].window);
 192         }
 193
 194         XDestroyWindow(obt_display, self->msg.window);
 195
 196         RrAppearanceFree(self->a_bg);
 197
 198         XDestroyWindow(obt_display, self->super.window);
 199         g_free(self);
 200     }
 201 }
 202
 203 static void prompt_layout(ObPrompt *self)
 204 {
 205     gint l, r, t, b;
 206     gint i;
 207     gint allbuttonsw, allbuttonsh, buttonx;
 208     gint w, h;
 209     gint maxw;
 210
 211     const gint OUTSIDE_MARGIN = 4;
 212     const gint MSG_BUTTON_SEPARATION = 4;
 213     const gint BUTTON_SEPARATION = 4;
 214     const gint BUTTON_VMARGIN = 4;
 215     const gint BUTTON_HMARGIN = 12;
 216     const gint MAX_WIDTH = 600;
 217
 218     RrMargins(self->a_bg, &l, &t, &r, &b);
 219     l += OUTSIDE_MARGIN;
 220     t += OUTSIDE_MARGIN;
 221     r += OUTSIDE_MARGIN;
 222     b += OUTSIDE_MARGIN;
 223
 224     {
 225         Rect *area = screen_physical_area_all_monitors();
 226         maxw = MIN(MAX_WIDTH, area->width*4/5);
 227         g_free(area);
 228     }
 229
 230     /* find the button sizes and how much space we need for them */
 231     allbuttonsw = allbuttonsh = 0;
 232     for (i = 0; i < self->n_buttons; ++i) {
 233         gint bw, bh;
 234
 235         prompt_a_button->texture[0].data.text.string = self->button[i].text;
 236         prompt_a_focus->texture[0].data.text.string = self->button[i].text;
 237         prompt_a_press->texture[0].data.text.string = self->button[i].text;
 238         RrMinSize(prompt_a_button, &bw, &bh);
 239         self->button[i].width = bw;
 240         self->button[i].height = bh;
 241         RrMinSize(prompt_a_focus, &bw, &bh);
 242         self->button[i].width = MAX(self->button[i].width, bw);
 243         self->button[i].height = MAX(self->button[i].height, bh);
 244         RrMinSize(prompt_a_press, &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
 248         self->button[i].width += BUTTON_HMARGIN * 2;
 249         self->button[i].height += BUTTON_VMARGIN * 2;
 250
 251         allbuttonsw += self->button[i].width + (i > 0 ? BUTTON_SEPARATION : 0);
 252         allbuttonsh = MAX(allbuttonsh, self->button[i].height);
 253     }
 254
 255     self->msg_wbound = MAX(allbuttonsw, maxw);
 256
 257     /* measure the text message area */
 258     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 259     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 260     RrMinSize(prompt_a_msg, &self->msg.width, &self->msg.height);
 261
 262     /* width and height inside the outer margins */
 263     w = MAX(self->msg.width, allbuttonsw);
 264     h = self->msg.height + MSG_BUTTON_SEPARATION + allbuttonsh;
 265
 266     /* position the text message */
 267     self->msg.x = l + (w - self->msg.width) / 2;
 268     self->msg.y = t;
 269
 270     /* position the button buttons on the right of the dialog */
 271     buttonx = l + w;
 272     for (i = self->n_buttons - 1; i >= 0; --i) {
 273         self->button[i].x = buttonx - self->button[i].width;
 274         buttonx -= self->button[i].width + BUTTON_SEPARATION;
 275         self->button[i].y = t + h - allbuttonsh;
 276         self->button[i].y += (allbuttonsh - self->button[i].height) / 2;
 277     }
 278
 279     /* size and position the toplevel window */
 280     self->width = w + l + r;
 281     self->height = h + t + b;
 282
 283     /* move and resize the actual windows */
 284     XResizeWindow(obt_display, self->super.window, self->width, self->height);
 285     XMoveResizeWindow(obt_display, self->msg.window,
 286                       self->msg.x, self->msg.y,
 287                       self->msg.width, self->msg.height);
 288     for (i = 0; i < self->n_buttons; ++i)
 289         XMoveResizeWindow(obt_display, self->button[i].window,
 290                           self->button[i].x, self->button[i].y,
 291                           self->button[i].width, self->button[i].height);
 292 }
 293
 294 static void render_button(ObPrompt *self, ObPromptElement *e)
 295 {
 296     RrAppearance *a;
 297
 298     if (e->pressed) a = prompt_a_press;
 299     else if (self->focus == e) a = prompt_a_focus;
 300     else a = prompt_a_button;
 301
 302     a->surface.parent = self->a_bg;
 303     a->surface.parentx = e->x;
 304     a->surface.parentx = e->y;
 305
 306     a->texture[0].data.text.string = e->text;
 307     RrPaint(a, e->window, e->width, e->height);
 308 }
 309
 310 static void render_all(ObPrompt *self)
 311 {
 312     gint i;
 313
 314     RrPaint(self->a_bg, self->super.window, self->width, self->height);
 315
 316     prompt_a_msg->surface.parent = self->a_bg;
 317     prompt_a_msg->surface.parentx = self->msg.x;
 318     prompt_a_msg->surface.parenty = self->msg.y;
 319
 320     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 321     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 322     RrPaint(prompt_a_msg, self->msg.window, self->msg.width, self->msg.height);
 323
 324     for (i = 0; i < self->n_buttons; ++i)
 325         render_button(self, &self->button[i]);
 326 }
 327
 328 void prompt_show(ObPrompt *self, ObClient *parent)
 329 {
 330     XSizeHints hints;
 331     gint i;
 332
 333     if (self->mapped) return;
 334
 335     /* set the focused button (if not found then the first button is used) */
 336     self->focus = &self->button[0];
 337     for (i = 0; i < self->n_buttons; ++i)
 338         if (self->button[i].result == self->default_result) {
 339             self->focus = &self->button[i];
 340             break;
 341         }
 342
 343     /* you can't resize the prompt */
 344     hints.flags = PMinSize | PMaxSize;
 345     hints.min_width = hints.max_width = self->width;
 346     hints.min_height = hints.max_height = self->height;
 347     XSetWMNormalHints(obt_display, self->super.window, &hints);
 348
 349     XSetTransientForHint(obt_display, (parent ? parent->window : 0),
 350                          self->super.window);
 351
 352     /* set up the dialog and render it */
 353     prompt_layout(self);
 354     render_all(self);
 355
 356     client_manage(self->super.window, self);
 357
 358     self->mapped = TRUE;
 359 }
 360
 361 void prompt_hide(ObPrompt *self)
 362 {
 363     XUnmapWindow(obt_display, self->super.window);
 364     self->mapped = FALSE;
 365 }
 366
 367 void prompt_key_event(ObPrompt *self, XEvent *e)
 368 {
 369     gboolean shift;
 370     guint shift_mask;
 371
 372     if (e->type != KeyPress) return;
 373
 374     shift_mask = obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_SHIFT);
 375     shift = !!(e->xkey.state & shift_mask);
 376
 377     /* only accept shift */
 378     if (e->xkey.state != 0 && e->xkey.state != shift_mask)
 379         return;
 380
 381     if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 382         prompt_cancel(self);
 383     else if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN)) {
 384         if (self->func) self->func(self, self->focus->result, self->data);
 385         prompt_hide(self);
 386     }
 387     else if (e->xkey.keycode == ob_keycode(OB_KEY_TAB)) {
 388         gint i;
 389         ObPromptElement *oldfocus;
 390
 391         oldfocus = self->focus;
 392
 393         for (i = 0; i < self->n_buttons; ++i)
 394             if (self->focus == &self->button[i]) break;
 395         i += (shift ? -1 : 1);
 396         if (i < 0) i = self->n_buttons - 1;
 397         else if (i >= self->n_buttons) i = 0;
 398         self->focus = &self->button[i];
 399
 400         if (oldfocus != self->focus) render_button(self, oldfocus);
 401         render_button(self, self->focus);
 402     }
 403 }
 404
 405 void prompt_mouse_event(ObPrompt *self, XEvent *e)
 406 {
 407     gint i;
 408     ObPromptElement *but;
 409
 410     if (e->type != ButtonPress && e->type != ButtonRelease &&
 411         e->type != MotionNotify) return;
 412
 413     /* find the button */
 414     for (i = 0; i < self->n_buttons; ++i)
 415         if (self->button[i].window ==
 416             (e->type == MotionNotify ? e->xmotion.window : e->xbutton.window))
 417         {
 418             but = &self->button[i];
 419             break;
 420         }
 421     g_assert(but != NULL);
 422
 423     if (e->type == ButtonPress) {
 424         ObPromptElement *oldfocus;
 425
 426         oldfocus = self->focus;
 427
 428         but->pressed = TRUE;
 429         self->focus = but;
 430
 431         if (oldfocus != but) render_button(self, oldfocus);
 432         render_button(self, but);
 433     }
 434     else if (e->type == ButtonRelease) {
 435         if (but->pressed) {
 436             if (self->func) self->func(self, but->result, self->data);
 437             prompt_hide(self);
 438         }
 439     }
 440     else if (e->type == MotionNotify) {
 441         gboolean press;
 442
 443         press = (e->xmotion.x >= 0 && e->xmotion.y >= 0 &&
 444                  e->xmotion.x < but->width && e->xmotion.y < but->height);
 445
 446         if (press != but->pressed) {
 447             but->pressed = press;
 448             render_button(self, but);
 449         }
 450     }
 451 }
 452
 453 void prompt_cancel(ObPrompt *self)
 454 {
 455     if (self->func) self->func(self, self->cancel_result, self->data);
 456     prompt_hide(self);
 457 }