src/placement.c

   1 /* placement.c - window and icon placement on screen
   2  *
   3  *  Window Maker window manager
   4  *
   5  *  Copyright (c) 1997, 1998 Alfredo K. Kojima
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20  *  USA.
  21  */
  22
  23 #include "wconfig.h"
  24
  25 #include <X11/Xlib.h>
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #include "WindowMaker.h"
  31 #include "wcore.h"
  32 #include "framewin.h"
  33 #include "window.h"
  34 #include "icon.h"
  35 #include "actions.h"
  36 #include "funcs.h"
  37 #include "application.h"
  38 #include "appicon.h"
  39 #include "dock.h"
  40
  41 #include "list.h"
  42
  43 extern WPreferences wPreferences;
  44
  45
  46 #define X_ORIGIN(scr) WMAX((scr)->totalUsableArea.x1,\
  47                                 wPreferences.window_place_origin.x)
  48
  49 #define Y_ORIGIN(scr) WMAX((scr)->totalUsableArea.y1,\
  50                                 wPreferences.window_place_origin.y)
  51
  52
  53 /*
  54  * interactive window placement is in moveres.c
  55  */
  56
  57 extern void
  58 InteractivePlaceWindow(WWindow *wwin, int *x_ret, int *y_ret,
  59                        unsigned width, unsigned height);
  60
  61
  62 /*
  63  * Returns True if it is an icon and is in this workspace.
  64  */
  65 static Bool
  66 iconPosition(WCoreWindow *wcore, int sx1, int sy1, int sx2, int sy2,
  67              int workspace, int *retX, int *retY)
  68 {
  69     void *parent;
  70     int ok = 0;
  71
  72     parent = wcore->descriptor.parent;
  73
  74     /* if it is an application icon */
  75     if (wcore->descriptor.parent_type == WCLASS_APPICON) {
  76         *retX = ((WAppIcon*)parent)->x_pos;
  77         *retY = ((WAppIcon*)parent)->y_pos;
  78
  79         ok = 1;
  80     } else if (wcore->descriptor.parent_type == WCLASS_MINIWINDOW &&
  81                (((WIcon*)parent)->owner->frame->workspace == workspace
  82                 || IS_OMNIPRESENT(((WIcon*)parent)->owner)
  83                 || wPreferences.sticky_icons)
  84                && (!((WIcon*)parent)->owner->flags.hidden
  85                    || wcore->screen_ptr->flags.startup)) {
  86
  87         *retX = ((WIcon*)parent)->owner->icon_x;
  88         *retY = ((WIcon*)parent)->owner->icon_y;
  89
  90         ok = 1;
  91     } else if (wcore->descriptor.parent_type == WCLASS_WINDOW
  92                && (((WWindow*)parent)->flags.icon_moved
  93                    || ((WWindow*)parent)->flags.hidden)
  94                && (((WWindow*)parent)->frame->workspace == workspace
  95                    || IS_OMNIPRESENT((WWindow*)parent)
  96                    || wPreferences.sticky_icons)) {
  97         *retX = ((WWindow*)parent)->icon_x;
  98         *retY = ((WWindow*)parent)->icon_y;
  99
 100         ok = 1;
 101     }
 102
 103
 104     /*
 105      * Check if it is inside the screen.
 106      */
 107     if (ok) {
 108         if (*retX < sx1-wPreferences.icon_size)
 109             ok = 0;
 110         else if (*retX > sx2)
 111             ok = 0;
 112
 113         if (*retY < sy1-wPreferences.icon_size)
 114             ok = 0;
 115         else if (*retY > sy2)
 116             ok = 0;
 117     }
 118
 119     return ok;
 120 }
 121
 122
 123
 124
 125 void
 126 PlaceIcon(WScreen *scr, int *x_ret, int *y_ret)
 127 {
 128     int pf;                            /* primary axis */
 129     int sf;                            /* secondary axis */
 130     int fullW;
 131     int fullH;
 132     char *map;
 133     int pi, si;
 134     WCoreWindow *obj;
 135     int sx1, sx2, sy1, sy2;            /* screen boundary */
 136     int sw, sh;
 137     int xo, yo;
 138     int xs, ys;
 139     int x, y;
 140     int isize = wPreferences.icon_size;
 141     int done = 0;
 142     int level;
 143
 144     /*
 145      * Find out screen boundaries.
 146      */
 147     sx1 = 0;
 148     sy1 = 0;
 149     sx2 = scr->scr_width;
 150     sy2 = scr->scr_height;
 151     if (scr->dock) {
 152         if (scr->dock->on_right_side)
 153             sx2 -= isize + DOCK_EXTRA_SPACE;
 154         else
 155             sx1 += isize + DOCK_EXTRA_SPACE;
 156     }
 157
 158     sw = isize * (scr->scr_width/isize);
 159     sh = isize * (scr->scr_height/isize);
 160     fullW = (sx2-sx1)/isize;
 161     fullH = (sy2-sy1)/isize;
 162
 163     /* icon yard boundaries */
 164     if (wPreferences.icon_yard & IY_VERT) {
 165         pf = fullH;
 166         sf = fullW;
 167     } else {
 168         pf = fullW;
 169         sf = fullH;
 170     }
 171     if (wPreferences.icon_yard & IY_RIGHT) {
 172         xo = sx2 - isize;
 173         xs = -1;
 174     } else {
 175         xo = sx1;
 176         xs = 1;
 177     }
 178     if (wPreferences.icon_yard & IY_TOP) {
 179         yo = sy1;
 180         ys = 1;
 181     } else {
 182         yo = sy2 - isize;
 183         ys = -1;
 184     }
 185
 186     /*
 187      * Create a map with the occupied slots. 1 means the slot is used
 188      * or at least partially used.
 189      * The slot usage can be optimized by only marking fully used slots
 190      * or slots that have most of it covered.
 191      * Space usage is worse than the fvwm algorithm (used in the old version)
 192      * but complexity is much better (faster) than it.
 193      */
 194     map = wmalloc((sw+2) * (sh+2));
 195     memset(map, 0, (sw+2) * (sh+2));
 196
 197 #define INDEX(x,y)      (((y)+1)*(sw+2) + (x) + 1)
 198
 199     for (level = MAX_WINDOW_LEVELS-1; level >= WMDesktopLevel; level--) {
 200         obj = scr->stacking_list[level];
 201
 202         while (obj) {
 203             int x, y;
 204
 205             if (iconPosition(obj, sx1, sy1, sx2, sy2, scr->current_workspace,
 206                              &x, &y)) {
 207                 int xdi, ydi;          /* rounded down */
 208                 int xui, yui;          /* rounded up */
 209
 210                 xdi = x/isize;
 211                 ydi = y/isize;
 212                 xui = (x+isize/2)/isize;
 213                 yui = (y+isize/2)/isize;
 214                 map[INDEX(xdi,ydi)] = 1;
 215                 map[INDEX(xdi,yui)] = 1;
 216                 map[INDEX(xui,ydi)] = 1;
 217                 map[INDEX(xui,yui)] = 1;
 218             }
 219             obj = obj->stacking->under;
 220         }
 221     }
 222     /*
 223      * Default position
 224      */
 225     *x_ret = 0;
 226     *y_ret = 0;
 227
 228     /*
 229      * Look for an empty slot
 230      */
 231     for (si=0; si<sf; si++) {
 232         for (pi=0; pi<pf; pi++) {
 233             if (wPreferences.icon_yard & IY_VERT) {
 234                 x = xo + xs*(si*isize);
 235                 y = yo + ys*(pi*isize);
 236             } else {
 237                 x = xo + xs*(pi*isize);
 238                 y = yo + ys*(si*isize);
 239             }
 240             if (!map[INDEX(x/isize, y/isize)]) {
 241                 *x_ret = x;
 242                 *y_ret = y;
 243                 done = 1;
 244                 break;
 245             }
 246         }
 247         if (done)
 248             break;
 249     }
 250
 251     free(map);
 252 }
 253
 254
 255 static Bool
 256 smartPlaceWindow(WWindow *wwin, int *x_ret, int *y_ret,
 257                  unsigned int width, unsigned int height, int tryCount)
 258 {
 259     WScreen *scr = wwin->screen_ptr;
 260     int test_x = 0, test_y = Y_ORIGIN(scr);
 261     int loc_ok = False, tw,tx,ty,th;
 262     int swidth, sx;
 263     WWindow *test_window;
 264     int extra_height;
 265     WArea usableArea = scr->totalUsableArea;
 266
 267     if (wwin->frame)
 268         extra_height = wwin->frame->top_width + wwin->frame->bottom_width + 2;
 269     else
 270         extra_height = 24; /* random value */
 271
 272     swidth = usableArea.x2-usableArea.x1;
 273     sx = X_ORIGIN(scr);
 274
 275     /* this was based on fvwm2's smart placement */
 276
 277     height += extra_height;
 278
 279     while (((test_y + height) < (scr->scr_height)) && (!loc_ok)) {
 280
 281         test_x = sx;
 282
 283         while (((test_x + width) < swidth) && (!loc_ok)) {
 284
 285             loc_ok = True;
 286             test_window = scr->focused_window;
 287
 288             while ((test_window != NULL) && (loc_ok == True)) {
 289
 290                 if (test_window->frame->core->stacking->window_level
 291                     < WMNormalLevel && tryCount > 0) {
 292                     test_window = test_window->next;
 293                     continue;
 294                 }
 295 #if 0
 296                 tw = test_window->client.width;
 297                 if (test_window->flags.shaded)
 298                     th = test_window->frame->top_width;
 299                 else
 300                     th = test_window->client.height + extra_height;
 301 #else
 302                 tw = test_window->frame->core->width;
 303                 th = test_window->frame->core->height;
 304 #endif
 305                 tx = test_window->frame_x;
 306                 ty = test_window->frame_y;
 307
 308                 if ((tx < (test_x + width)) && ((tx + tw) > test_x) &&
 309                     (ty < (test_y + height)) && ((ty + th) > test_y) &&
 310                     (test_window->flags.mapped ||
 311                      (test_window->flags.shaded &&
 312                       !(test_window->flags.miniaturized ||
 313                         test_window->flags.hidden)))) {
 314
 315                     loc_ok = False;
 316                 }
 317                 test_window = test_window->next;
 318             }
 319
 320             test_window = scr->focused_window;
 321
 322             while ((test_window != NULL) && (loc_ok == True))  {
 323
 324                 if (test_window->frame->core->stacking->window_level
 325                     < WMNormalLevel && tryCount > 0) {
 326                     test_window = test_window->prev;
 327                     continue;
 328                 }
 329 #if 0
 330                 tw = test_window->client.width;
 331                 if (test_window->flags.shaded)
 332                     th = test_window->frame->top_width;
 333                 else
 334                     th = test_window->client.height + extra_height;
 335 #else
 336                 tw = test_window->frame->core->width;
 337                 th = test_window->frame->core->height;
 338 #endif
 339                 tx = test_window->frame_x;
 340                 ty = test_window->frame_y;
 341
 342                 if ((tx < (test_x + width)) && ((tx + tw) > test_x) &&
 343                     (ty < (test_y + height)) && ((ty + th) > test_y) &&
 344                     (test_window->flags.mapped ||
 345                      (test_window->flags.shaded &&
 346                       !(test_window->flags.miniaturized ||
 347                         test_window->flags.hidden)))) {
 348
 349                     loc_ok = False;
 350                 }
 351                 test_window = test_window->prev;
 352             }
 353             if (loc_ok == True) {
 354                 *x_ret = test_x;
 355                 *y_ret = test_y;
 356                 break;
 357             }
 358             test_x += PLACETEST_HSTEP;
 359         }
 360         test_y += PLACETEST_VSTEP;
 361     }
 362
 363     return loc_ok;
 364 }
 365
 366
 367 static void
 368 cascadeWindow(WScreen *scr, WWindow *wwin, int *x_ret, int *y_ret,
 369               unsigned int width, unsigned int height, int h)
 370 {
 371     unsigned int extra_height;
 372     WArea usableArea = scr->totalUsableArea;
 373
 374     if (wwin->frame)
 375         extra_height = wwin->frame->top_width + wwin->frame->bottom_width;
 376     else
 377         extra_height = 24; /* random value */
 378
 379     *x_ret = h * scr->cascade_index + X_ORIGIN(scr);
 380     *y_ret = h * scr->cascade_index + Y_ORIGIN(scr);
 381     height += extra_height;
 382
 383     if (width + *x_ret > usableArea.x2 || height + *y_ret > usableArea.y2) {
 384         scr->cascade_index = 0;
 385         *x_ret = X_ORIGIN(scr);
 386         *y_ret = Y_ORIGIN(scr);
 387     }
 388 }
 389
 390
 391 void
 392 PlaceWindow(WWindow *wwin, int *x_ret, int *y_ret,
 393             unsigned width, unsigned height)
 394 {
 395     WScreen *scr = wwin->screen_ptr;
 396     int h = scr->title_font->height+TITLEBAR_EXTRA_HEIGHT;
 397
 398     switch (wPreferences.window_placement) {
 399      case WPM_MANUAL:
 400         InteractivePlaceWindow(wwin, x_ret, y_ret, width, height);
 401         break;
 402
 403      case WPM_SMART:
 404         if (smartPlaceWindow(wwin, x_ret, y_ret, width, height, 0)) {
 405             break;
 406         } else if (smartPlaceWindow(wwin, x_ret, y_ret, width, height, 1)) {
 407             break;
 408         }
 409         /* there isn't a break here, because if we fail, it should fall
 410            through to cascade placement, as people who want tiling want
 411            automagicness aren't going to want to place their window */
 412
 413      case WPM_CASCADE:
 414         if (wPreferences.window_placement == WPM_SMART)
 415             scr->cascade_index++;
 416
 417         cascadeWindow(scr, wwin, x_ret, y_ret, width, height, h);
 418
 419         if (wPreferences.window_placement == WPM_CASCADE)
 420             scr->cascade_index++;
 421         break;
 422
 423      case WPM_RANDOM:
 424         {
 425             int w, h, extra_height;
 426             WArea usableArea = scr->totalUsableArea;
 427
 428             if (wwin->frame)
 429                 extra_height = wwin->frame->top_width + wwin->frame->bottom_width + 2;
 430             else
 431                 extra_height = 24; /* random value */
 432
 433             w = ((usableArea.x2-X_ORIGIN(scr)) - width);
 434             h = ((usableArea.y2-Y_ORIGIN(scr)) - height - extra_height);
 435             if (w<1) w = 1;
 436             if (h<1) h = 1;
 437             *x_ret = X_ORIGIN(scr) + rand()%w;
 438             *y_ret = Y_ORIGIN(scr) + rand()%h;
 439         }
 440         break;
 441
 442 #ifdef DEBUG
 443      default:
 444         puts("Invalid window placement!!!");
 445         *x_ret = 0;
 446         *y_ret = 0;
 447 #endif
 448     }
 449
 450     if (*x_ret + width > scr->scr_width)
 451         *x_ret = scr->scr_width - width;
 452     if (*x_ret < 0)
 453         *x_ret = 0;
 454
 455     if (*y_ret + height > scr->scr_height)
 456         *y_ret = scr->scr_height - height;
 457     if (*y_ret < 0)
 458         *y_ret = 0;
 459 }
 460
 461