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, const gchar *const *answers)
  96 {
  97     ObPrompt *self;
  98     XSetWindowAttributes attrib;
  99     guint i;
 100     const gchar *const *c;
 101
 102     attrib.override_redirect = FALSE;
 103     attrib.border_pixel = RrColorPixel(ob_rr_theme->osd_border_color);
 104
 105     self = g_new0(ObPrompt, 1);
 106     self->ref = 1;
 107     self->super.type = OB_WINDOW_CLASS_PROMPT;
 108     self->super.window = XCreateWindow(obt_display, obt_root(ob_screen),
 109                                        0, 0, 1, 1, ob_rr_theme->obwidth,
 110                                        CopyFromParent, InputOutput,
 111                                        CopyFromParent,
 112                                        CWOverrideRedirect | CWBorderPixel,
 113                                        &attrib);
 114
 115     /* make it a dialog type window */
 116     OBT_PROP_SET32(self->super.window, NET_WM_WINDOW_TYPE, ATOM,
 117                    OBT_PROP_ATOM(NET_WM_WINDOW_TYPE_DIALOG));
 118
 119     /* listen for key presses on the window */
 120     self->event_mask = KeyPressMask;
 121
 122     self->a_bg = RrAppearanceCopy(ob_rr_theme->osd_hilite_bg);
 123
 124     self->msg.text = g_strdup(msg);
 125     self->msg.window = XCreateWindow(obt_display, self->super.window,
 126                                      0, 0, 1, 1, 0,
 127                                      CopyFromParent, InputOutput,
 128                                      CopyFromParent, 0, NULL);
 129     XMapWindow(obt_display, self->msg.window);
 130
 131     self->n_buttons = 0;
 132     for (c = answers; *c != NULL; ++c)
 133         ++self->n_buttons;
 134
 135     if (!self->n_buttons)
 136         self->n_buttons = 1;
 137
 138     self->button = g_new(ObPromptElement, self->n_buttons);
 139
 140     if (!answers) {
 141         g_assert(self->n_buttons == 1); /* should be set to this above.. */
 142         self->button[0].text = g_strdup(_("OK"));
 143     }
 144     else {
 145         g_assert(self->n_buttons > 0);
 146         for (i = 0; i < self->n_buttons; ++i)
 147             self->button[i].text = g_strdup(answers[i]);
 148     }
 149
 150     for (i = 0; i < self->n_buttons; ++i) {
 151         self->button[i].window = XCreateWindow(obt_display, self->super.window,
 152                                                0, 0, 1, 1, 0,
 153                                                CopyFromParent, InputOutput,
 154                                                CopyFromParent, 0, NULL);
 155         XMapWindow(obt_display, self->button[i].window);
 156         window_add(&self->button[i].window, PROMPT_AS_WINDOW(self));
 157
 158         /* listen for button presses on the buttons */
 159         XSelectInput(obt_display, self->button[i].window,
 160                      ButtonPressMask | ButtonReleaseMask | ButtonMotionMask);
 161     }
 162
 163     /* set the focus to the first button */
 164     self->focus = &self->button[0];
 165
 166     prompt_list = g_list_prepend(prompt_list, self);
 167
 168     return self;
 169 }
 170
 171 void prompt_ref(ObPrompt *self)
 172 {
 173     ++self->ref;
 174 }
 175
 176 void prompt_unref(ObPrompt *self)
 177 {
 178     if (self && --self->ref == 0) {
 179         guint i;
 180
 181         prompt_list = g_list_remove(prompt_list, self);
 182
 183         for (i = 0; i < self->n_buttons; ++i) {
 184             window_remove(self->button[i].window);
 185             XDestroyWindow(obt_display, self->button[i].window);
 186         }
 187
 188         XDestroyWindow(obt_display, self->msg.window);
 189
 190         RrAppearanceFree(self->a_bg);
 191
 192         XDestroyWindow(obt_display, self->super.window);
 193         g_free(self);
 194     }
 195 }
 196
 197 static void prompt_layout(ObPrompt *self)
 198 {
 199     gint l, r, t, b;
 200     guint i;
 201     gint allbuttonsw, allbuttonsh, buttonx;
 202     gint w, h;
 203     gint maxw;
 204
 205     const gint OUTSIDE_MARGIN = 4;
 206     const gint MSG_BUTTON_SEPARATION = 4;
 207     const gint BUTTON_SEPARATION = 4;
 208     const gint BUTTON_VMARGIN = 4;
 209     const gint BUTTON_HMARGIN = 12;
 210     const gint MAX_WIDTH = 600;
 211
 212     RrMargins(self->a_bg, &l, &t, &r, &b);
 213     l += OUTSIDE_MARGIN;
 214     t += OUTSIDE_MARGIN;
 215     r += OUTSIDE_MARGIN;
 216     b += OUTSIDE_MARGIN;
 217
 218     {
 219         Rect *area = screen_physical_area_all_monitors();
 220         maxw = MIN(MAX_WIDTH, area->width*4/5);
 221         g_free(area);
 222     }
 223
 224     /* find the button sizes and how much space we need for them */
 225     allbuttonsw = allbuttonsh = 0;
 226     for (i = 0; i < self->n_buttons; ++i) {
 227         gint bw, bh;
 228
 229         prompt_a_button->texture[0].data.text.string = self->button[i].text;
 230         prompt_a_focus->texture[0].data.text.string = self->button[i].text;
 231         prompt_a_press->texture[0].data.text.string = self->button[i].text;
 232         RrMinSize(prompt_a_button, &bw, &bh);
 233         self->button[i].width = bw;
 234         self->button[i].height = bh;
 235         RrMinSize(prompt_a_focus, &bw, &bh);
 236         self->button[i].width = MAX(self->button[i].width, bw);
 237         self->button[i].height = MAX(self->button[i].height, bh);
 238         RrMinSize(prompt_a_press, &bw, &bh);
 239         self->button[i].width = MAX(self->button[i].width, bw);
 240         self->button[i].height = MAX(self->button[i].height, bh);
 241
 242         self->button[i].width += BUTTON_HMARGIN * 2;
 243         self->button[i].height += BUTTON_VMARGIN * 2;
 244
 245         allbuttonsw += self->button[i].width + (i > 0 ? BUTTON_SEPARATION : 0);
 246         allbuttonsh = MAX(allbuttonsh, self->button[i].height);
 247     }
 248
 249     self->msg_wbound = MAX(allbuttonsw, maxw);
 250
 251     /* measure the text message area */
 252     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 253     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 254     RrMinSize(prompt_a_msg, &self->msg.width, &self->msg.height);
 255
 256     /* width and height inside the outer margins */
 257     w = MAX(self->msg.width, allbuttonsw);
 258     h = self->msg.height + MSG_BUTTON_SEPARATION + allbuttonsh;
 259
 260     /* position the text message */
 261     self->msg.x = l + (w - self->msg.width) / 2;
 262     self->msg.y = t;
 263
 264     /* position the button buttons on the right of the dialog */
 265     buttonx = l + w;
 266     for (i = self->n_buttons; i > 0; --i) {
 267         self->button[i-1].x = buttonx - self->button[i-1].width;
 268         buttonx -= self->button[i-1].width + BUTTON_SEPARATION;
 269         self->button[i-1].y = t + h - allbuttonsh;
 270         self->button[i-1].y += (allbuttonsh - self->button[i-1].height) / 2;
 271     }
 272
 273     /* size and position the toplevel window */
 274     self->width = w + l + r;
 275     self->height = h + t + b;
 276
 277     /* move and resize the actual windows */
 278     XResizeWindow(obt_display, self->super.window, self->width, self->height);
 279     XMoveResizeWindow(obt_display, self->msg.window,
 280                       self->msg.x, self->msg.y,
 281                       self->msg.width, self->msg.height);
 282     for (i = 0; i < self->n_buttons; ++i)
 283         XMoveResizeWindow(obt_display, self->button[i].window,
 284                           self->button[i].x, self->button[i].y,
 285                           self->button[i].width, self->button[i].height);
 286 }
 287
 288 static void render_button(ObPrompt *self, ObPromptElement *e)
 289 {
 290     RrAppearance *a;
 291
 292     if (e->pressed) a = prompt_a_press;
 293     else if (self->focus == e) a = prompt_a_focus;
 294     else a = prompt_a_button;
 295
 296     a->surface.parent = self->a_bg;
 297     a->surface.parentx = e->x;
 298     a->surface.parentx = e->y;
 299
 300     a->texture[0].data.text.string = e->text;
 301     RrPaint(a, e->window, e->width, e->height);
 302 }
 303
 304 static void render_all(ObPrompt *self)
 305 {
 306     guint i;
 307
 308     RrPaint(self->a_bg, self->super.window, self->width, self->height);
 309
 310     prompt_a_msg->surface.parent = self->a_bg;
 311     prompt_a_msg->surface.parentx = self->msg.x;
 312     prompt_a_msg->surface.parenty = self->msg.y;
 313
 314     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 315     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 316     RrPaint(prompt_a_msg, self->msg.window, self->msg.width, self->msg.height);
 317
 318     for (i = 0; i < self->n_buttons; ++i)
 319         render_button(self, &self->button[i]);
 320 }
 321
 322 void prompt_show(ObPrompt *self, ObClient *parent)
 323 {
 324     XSizeHints hints;
 325
 326     if (self->mapped) return;
 327
 328     prompt_layout(self);
 329     render_all(self);
 330
 331     /* you can't resize the prompt */
 332     hints.flags = PMinSize | PMaxSize;
 333     hints.min_width = hints.max_width = self->width;
 334     hints.min_height = hints.max_height = self->height;
 335     XSetWMNormalHints(obt_display, self->super.window, &hints);
 336
 337     XSetTransientForHint(obt_display, (parent ? parent->window : 0),
 338                          self->super.window);
 339
 340     client_manage(self->super.window, self);
 341
 342     self->mapped = TRUE;
 343 }
 344
 345 void prompt_hide(ObPrompt *self)
 346 {
 347     XUnmapWindow(obt_display, self->super.window);
 348     self->mapped = FALSE;
 349 }
 350
 351 void prompt_key_event(ObPrompt *self, XEvent *e)
 352 {
 353     gboolean shift;
 354     guint shift_mask;
 355
 356     if (e->type != KeyPress) return;
 357
 358     shift_mask = obt_keyboard_modkey_to_modmask(OBT_KEYBOARD_MODKEY_SHIFT);
 359     shift = !!(e->xkey.state & shift_mask);
 360
 361     /* only accept shift */
 362     if (e->xkey.state != 0 && e->xkey.state != shift_mask)
 363         return;
 364
 365     if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 366         prompt_hide(self);
 367     else if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN)) {
 368         /* XXX run stuff */
 369         prompt_hide(self);
 370     }
 371     else if (e->xkey.keycode == ob_keycode(OB_KEY_TAB)) {
 372         guint i;
 373         ObPromptElement *oldfocus;
 374
 375         oldfocus = self->focus;
 376
 377         for (i = 0; i < self->n_buttons; ++i)
 378             if (self->focus == &self->button[i]) break;
 379         i += (shift ? -1 : 1);
 380         if (i < 0) i = self->n_buttons - 1;
 381         else if (i >= self->n_buttons) i = 0;
 382         self->focus = &self->button[i];
 383
 384         if (oldfocus != self->focus) render_button(self, oldfocus);
 385         render_button(self, self->focus);
 386     }
 387 }
 388
 389 void prompt_mouse_event(ObPrompt *self, XEvent *e)
 390 {
 391     guint i;
 392     ObPromptElement *but;
 393
 394     if (e->type != ButtonPress && e->type != ButtonRelease &&
 395         e->type != MotionNotify) return;
 396
 397     /* find the button */
 398     for (i = 0; i < self->n_buttons; ++i)
 399         if (self->button[i].window ==
 400             (e->type == MotionNotify ? e->xmotion.window : e->xbutton.window))
 401         {
 402             but = &self->button[i];
 403             break;
 404         }
 405     g_assert(but != NULL);
 406
 407     if (e->type == ButtonPress) {
 408         ObPromptElement *oldfocus;
 409
 410         oldfocus = self->focus;
 411
 412         but->pressed = TRUE;
 413         self->focus = but;
 414
 415         if (oldfocus != but) render_button(self, oldfocus);
 416         render_button(self, but);
 417     }
 418     else if (e->type == ButtonRelease) {
 419         if (but->pressed) {
 420             /* XXX run stuff */
 421             prompt_hide(self);
 422         }
 423     }
 424     else if (e->type == MotionNotify) {
 425         gboolean press;
 426
 427         press = (e->xmotion.x >= 0 && e->xmotion.y >= 0 &&
 428                  e->xmotion.x < but->width && e->xmotion.y < but->height);
 429
 430         if (press != but->pressed) {
 431             but->pressed = press;
 432             render_button(self, but);
 433         }
 434     }
 435 }