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, 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 = Window_Prompt;
 108     self->super.window = XCreateWindow(ob_display,
 109                                        RootWindow(ob_display, ob_screen),
 110                                        0, 0, 1, 1, ob_rr_theme->obwidth,
 111                                        CopyFromParent, InputOutput,
 112                                        CopyFromParent,
 113                                        CWOverrideRedirect | CWBorderPixel,
 114                                        &attrib);
 115
 116     /* make it a dialog type window */
 117     PROP_SET32(self->super.window, net_wm_window_type, atom,
 118                prop_atoms.net_wm_window_type_dialog);
 119
 120     /* listen for key presses on the window */
 121     self->event_mask = KeyPressMask;
 122
 123     self->a_bg = RrAppearanceCopy(ob_rr_theme->osd_hilite_bg);
 124
 125     self->msg.text = g_strdup(msg);
 126     self->msg.window = XCreateWindow(ob_display, self->super.window,
 127                                      0, 0, 1, 1, 0,
 128                                      CopyFromParent, InputOutput,
 129                                      CopyFromParent, 0, NULL);
 130     XMapWindow(ob_display, self->msg.window);
 131
 132     self->n_buttons = 0;
 133     for (c = answers; *c != NULL; ++c)
 134         ++self->n_buttons;
 135
 136     if (!self->n_buttons)
 137         self->n_buttons = 1;
 138
 139     self->button = g_new(ObPromptElement, self->n_buttons);
 140
 141     if (!answers) {
 142         g_assert(self->n_buttons == 1); /* should be set to this above.. */
 143         self->button[0].text = g_strdup(_("OK"));
 144     }
 145     else {
 146         g_assert(self->n_buttons > 0);
 147         for (i = 0; i < self->n_buttons; ++i)
 148             self->button[i].text = g_strdup(answers[i]);
 149     }
 150
 151     for (i = 0; i < self->n_buttons; ++i) {
 152         self->button[i].window = XCreateWindow(ob_display, self->super.window,
 153                                                0, 0, 1, 1, 0,
 154                                                CopyFromParent, InputOutput,
 155                                                CopyFromParent, 0, NULL);
 156         XMapWindow(ob_display, self->button[i].window);
 157         g_hash_table_insert(window_map, &self->button[i].window,
 158                             PROMPT_AS_WINDOW(self));
 159
 160         /* listen for button presses on the buttons */
 161         XSelectInput(ob_display, self->button[i].window,
 162                      ButtonPressMask | ButtonReleaseMask | ButtonMotionMask);
 163     }
 164
 165     /* set the focus to the first button */
 166     self->focus = &self->button[0];
 167
 168     prompt_list = g_list_prepend(prompt_list, self);
 169
 170     return self;
 171 }
 172
 173 void prompt_ref(ObPrompt *self)
 174 {
 175     ++self->ref;
 176 }
 177
 178 void prompt_unref(ObPrompt *self)
 179 {
 180     if (self && --self->ref == 0) {
 181         guint i;
 182
 183         prompt_list = g_list_remove(prompt_list, self);
 184
 185         for (i = 0; i < self->n_buttons; ++i) {
 186             g_hash_table_remove(window_map, &self->button[i].window);
 187             XDestroyWindow(ob_display, self->button[i].window);
 188         }
 189
 190         XDestroyWindow(ob_display, self->msg.window);
 191
 192         RrAppearanceFree(self->a_bg);
 193
 194         XDestroyWindow(ob_display, self->super.window);
 195         g_free(self);
 196     }
 197 }
 198
 199 static void prompt_layout(ObPrompt *self)
 200 {
 201     gint l, r, t, b;
 202     guint i;
 203     gint allbuttonsw, allbuttonsh, buttonx;
 204     gint w, h;
 205     gint maxw;
 206
 207     const gint OUTSIDE_MARGIN = 4;
 208     const gint MSG_BUTTON_SEPARATION = 4;
 209     const gint BUTTON_SEPARATION = 4;
 210     const gint BUTTON_VMARGIN = 4;
 211     const gint BUTTON_HMARGIN = 12;
 212     const gint MAX_WIDTH = 600;
 213
 214     RrMargins(self->a_bg, &l, &t, &r, &b);
 215     l += OUTSIDE_MARGIN;
 216     t += OUTSIDE_MARGIN;
 217     r += OUTSIDE_MARGIN;
 218     b += OUTSIDE_MARGIN;
 219
 220     {
 221         Rect *area = screen_physical_area_all_monitors();
 222         maxw = MIN(MAX_WIDTH, area->width*4/5);
 223         g_free(area);
 224     }
 225
 226     /* find the button sizes and how much space we need for them */
 227     allbuttonsw = allbuttonsh = 0;
 228     for (i = 0; i < self->n_buttons; ++i) {
 229         gint bw, bh;
 230
 231         prompt_a_button->texture[0].data.text.string = self->button[i].text;
 232         prompt_a_focus->texture[0].data.text.string = self->button[i].text;
 233         prompt_a_press->texture[0].data.text.string = self->button[i].text;
 234         RrMinSize(prompt_a_button, &bw, &bh);
 235         self->button[i].width = bw;
 236         self->button[i].height = bh;
 237         RrMinSize(prompt_a_focus, &bw, &bh);
 238         self->button[i].width = MAX(self->button[i].width, bw);
 239         self->button[i].height = MAX(self->button[i].height, bh);
 240         RrMinSize(prompt_a_press, &bw, &bh);
 241         self->button[i].width = MAX(self->button[i].width, bw);
 242         self->button[i].height = MAX(self->button[i].height, bh);
 243
 244         self->button[i].width += BUTTON_HMARGIN * 2;
 245         self->button[i].height += BUTTON_VMARGIN * 2;
 246
 247         allbuttonsw += self->button[i].width + (i > 0 ? BUTTON_SEPARATION : 0);
 248         allbuttonsh = MAX(allbuttonsh, self->button[i].height);
 249     }
 250
 251     self->msg_wbound = MAX(allbuttonsw, maxw);
 252
 253     /* measure the text message area */
 254     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 255     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 256     RrMinSize(prompt_a_msg, &self->msg.width, &self->msg.height);
 257
 258     /* width and height inside the outer margins */
 259     w = MAX(self->msg.width, allbuttonsw);
 260     h = self->msg.height + MSG_BUTTON_SEPARATION + allbuttonsh;
 261
 262     /* position the text message */
 263     self->msg.x = l + (w - self->msg.width) / 2;
 264     self->msg.y = t;
 265
 266     /* position the button buttons on the right of the dialog */
 267     buttonx = l + w;
 268     for (i = self->n_buttons; i > 0; --i) {
 269         self->button[i-1].x = buttonx - self->button[i-1].width;
 270         buttonx -= self->button[i-1].width + BUTTON_SEPARATION;
 271         self->button[i-1].y = t + h - allbuttonsh;
 272         self->button[i-1].y += (allbuttonsh - self->button[i-1].height) / 2;
 273     }
 274
 275     /* size and position the toplevel window */
 276     self->width = w + l + r;
 277     self->height = h + t + b;
 278
 279     /* move and resize the actual windows */
 280     XResizeWindow(ob_display, self->super.window, self->width, self->height);
 281     XMoveResizeWindow(ob_display, self->msg.window,
 282                       self->msg.x, self->msg.y,
 283                       self->msg.width, self->msg.height);
 284     for (i = 0; i < self->n_buttons; ++i)
 285         XMoveResizeWindow(ob_display, self->button[i].window,
 286                           self->button[i].x, self->button[i].y,
 287                           self->button[i].width, self->button[i].height);
 288 }
 289
 290 static void render_button(ObPrompt *self, ObPromptElement *e)
 291 {
 292     RrAppearance *a;
 293
 294     if (e->pressed) a = prompt_a_press;
 295     else if (self->focus == e) a = prompt_a_focus;
 296     else a = prompt_a_button;
 297
 298     a->surface.parent = self->a_bg;
 299     a->surface.parentx = e->x;
 300     a->surface.parentx = e->y;
 301
 302     a->texture[0].data.text.string = e->text;
 303     RrPaint(a, e->window, e->width, e->height);
 304 }
 305
 306 static void render_all(ObPrompt *self)
 307 {
 308     guint i;
 309
 310     RrPaint(self->a_bg, self->super.window, self->width, self->height);
 311
 312     prompt_a_msg->surface.parent = self->a_bg;
 313     prompt_a_msg->surface.parentx = self->msg.x;
 314     prompt_a_msg->surface.parenty = self->msg.y;
 315
 316     prompt_a_msg->texture[0].data.text.string = self->msg.text;
 317     prompt_a_msg->texture[0].data.text.maxwidth = self->msg_wbound;
 318     RrPaint(prompt_a_msg, self->msg.window, self->msg.width, self->msg.height);
 319
 320     for (i = 0; i < self->n_buttons; ++i)
 321         render_button(self, &self->button[i]);
 322 }
 323
 324 void prompt_show(ObPrompt *self, ObClient *parent)
 325 {
 326     XSizeHints hints;
 327
 328     if (self->mapped) return;
 329
 330     prompt_layout(self);
 331     render_all(self);
 332
 333     /* you can't resize the prompt */
 334     hints.flags = PMinSize | PMaxSize;
 335     hints.min_width = hints.max_width = self->width;
 336     hints.min_height = hints.max_height = self->height;
 337     XSetWMNormalHints(ob_display, self->super.window, &hints);
 338
 339     XSetTransientForHint(ob_display, (parent ? parent->window : 0),
 340                          self->super.window);
 341
 342     client_manage(self->super.window, self);
 343
 344     self->mapped = TRUE;
 345 }
 346
 347 void prompt_hide(ObPrompt *self)
 348 {
 349     XUnmapWindow(ob_display, self->super.window);
 350     self->mapped = FALSE;
 351 }
 352
 353 void prompt_key_event(ObPrompt *self, XEvent *e)
 354 {
 355     gboolean shift;
 356     guint shift_mask;
 357
 358     if (e->type != KeyPress) return;
 359
 360     g_print("key 0x%x 0x%x\n", e->xkey.keycode, ob_keycode(OB_KEY_TAB));
 361
 362     shift_mask = modkeys_key_to_mask(OB_MODKEY_KEY_SHIFT);
 363     shift = !!(e->xkey.state & shift_mask);
 364
 365     /* only accept shift */
 366     if (e->xkey.state != 0 && e->xkey.state != shift_mask)
 367         return;
 368
 369     if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 370         prompt_hide(self);
 371     else if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN)) {
 372         /* XXX run stuff */
 373         prompt_hide(self);
 374     }
 375     else if (e->xkey.keycode == ob_keycode(OB_KEY_TAB)) {
 376         guint i;
 377         ObPromptElement *oldfocus;
 378
 379         oldfocus = self->focus;
 380
 381         for (i = 0; i < self->n_buttons; ++i)
 382             if (self->focus == &self->button[i]) break;
 383         i += (shift ? -1 : 1);
 384         if (i < 0) i = self->n_buttons - 1;
 385         else if (i >= self->n_buttons) i = 0;
 386         self->focus = &self->button[i];
 387
 388         if (oldfocus != self->focus) render_button(self, oldfocus);
 389         render_button(self, self->focus);
 390     }
 391 }
 392
 393 void prompt_mouse_event(ObPrompt *self, XEvent *e)
 394 {
 395     guint i;
 396     ObPromptElement *but;
 397
 398     if (e->type != ButtonPress && e->type != ButtonRelease &&
 399         e->type != MotionNotify) return;
 400
 401     /* find the button */
 402     for (i = 0; i < self->n_buttons; ++i)
 403         if (self->button[i].window ==
 404             (e->type == MotionNotify ? e->xmotion.window : e->xbutton.window))
 405         {
 406             but = &self->button[i];
 407             break;
 408         }
 409     g_assert(but != NULL);
 410
 411     if (e->type == ButtonPress) {
 412         ObPromptElement *oldfocus;
 413
 414         oldfocus = self->focus;
 415
 416         but->pressed = TRUE;
 417         self->focus = but;
 418
 419         if (oldfocus != but) render_button(self, oldfocus);
 420         render_button(self, but);
 421     }
 422     else if (e->type == ButtonRelease) {
 423         if (but->pressed) {
 424             /* XXX run stuff */
 425             prompt_hide(self);
 426         }
 427     }
 428     else if (e->type == MotionNotify) {
 429         gboolean press;
 430
 431         press = (e->xmotion.x >= 0 && e->xmotion.y >= 0 &&
 432                  e->xmotion.x < but->width && e->xmotion.y < but->height);
 433
 434         if (press != but->pressed) {
 435             but->pressed = press;
 436             render_button(self, but);
 437         }
 438     }
 439 }