Dogcows Code - chaz/openbox/blob - openbox/resist.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    resist.c for the Openbox window manager
   4    Copyright (c) 2006        Mikael Magnusson
   5    Copyright (c) 2003-2007   Dana Jansens
   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    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "client.h"
  21 #include "frame.h"
  22 #include "stacking.h"
  23 #include "screen.h"
  24 #include "config.h"
  25 #include "parser/parse.h"
  26
  27 #include <glib.h>
  28
  29 void resist_move_windows(ObClient *c, gint *x, gint *y)
  30 {
  31     GList *it;
  32     gint l, t, r, b; /* requested edges */
  33     gint cl, ct, cr, cb; /* current edges */
  34     gint w, h; /* current size */
  35     ObClient *snapx = NULL, *snapy = NULL;
  36
  37     w = c->frame->area.width;
  38     h = c->frame->area.height;
  39
  40     l = *x;
  41     t = *y;
  42     r = l + w - 1;
  43     b = t + h - 1;
  44
  45     cl = RECT_LEFT(c->frame->area);
  46     ct = RECT_TOP(c->frame->area);
  47     cr = RECT_RIGHT(c->frame->area);
  48     cb = RECT_BOTTOM(c->frame->area);
  49
  50     if (config_resist_win)
  51         for (it = stacking_list; it; it = g_list_next(it)) {
  52             ObClient *target;
  53             gint tl, tt, tr, tb; /* 1 past the target's edges on each side */
  54
  55             if (!WINDOW_IS_CLIENT(it->data))
  56                 continue;
  57             target = it->data;
  58
  59             /* don't snap to self or non-visibles */
  60             if (!target->frame->visible || target == c) continue;
  61
  62             /* don't snap to windows in layers beneath */
  63             if(target->layer < c->layer && !config_resist_layers_below)
  64                 continue;
  65
  66             tl = RECT_LEFT(target->frame->area) - 1;
  67             tt = RECT_TOP(target->frame->area) - 1;
  68             tr = RECT_RIGHT(target->frame->area) + 1;
  69             tb = RECT_BOTTOM(target->frame->area) + 1;
  70
  71             /* snapx and snapy ensure that the window snaps to the top-most
  72                window edge available, without going all the way from
  73                bottom-to-top in the stacking list
  74             */
  75             if (snapx == NULL) {
  76                 if (ct < tb && cb > tt) {
  77                     if (cl >= tr && l < tr && l >= tr - config_resist_win)
  78                         *x = tr, snapx = target;
  79                     else if (cr <= tl && r > tl &&
  80                              r <= tl + config_resist_win)
  81                         *x = tl - w + 1, snapx = target;
  82                     if (snapx != NULL) {
  83                         /* try to corner snap to the window */
  84                         if (ct > tt && t <= tt &&
  85                             t > tt - config_resist_win)
  86                             *y = tt + 1, snapy = target;
  87                         else if (cb < tb && b >= tb &&
  88                                  b < tb + config_resist_win)
  89                             *y = tb - h, snapy = target;
  90                     }
  91                 }
  92             }
  93             if (snapy == NULL) {
  94                 if (cl < tr && cr > tl) {
  95                     if (ct >= tb && t < tb && t >= tb - config_resist_win)
  96                         *y = tb, snapy = target;
  97                     else if (cb <= tt && b > tt &&
  98                              b <= tt + config_resist_win)
  99                         *y = tt - h + 1, snapy = target;
 100                     if (snapy != NULL) {
 101                         /* try to corner snap to the window */
 102                         if (cl > tl && l <= tl &&
 103                             l > tl - config_resist_win)
 104                             *x = tl + 1, snapx = target;
 105                         else if (cr < tr && r >= tr &&
 106                                  r < tr + config_resist_win)
 107                             *x = tr - w, snapx = target;
 108                     }
 109                 }
 110             }
 111
 112             if (snapx && snapy) break;
 113         }
 114 }
 115
 116 void resist_move_monitors(ObClient *c, gint *x, gint *y)
 117 {
 118     Rect *area, *parea;
 119     guint i;
 120     gint l, t, r, b; /* requested edges */
 121     gint al, at, ar, ab; /* screen area edges */
 122     gint pl, pt, pr, pb; /* physical screen area edges */
 123     gint cl, ct, cr, cb; /* current edges */
 124     gint w, h; /* current size */
 125
 126     w = c->frame->area.width;
 127     h = c->frame->area.height;
 128
 129     l = *x;
 130     t = *y;
 131     r = l + w - 1;
 132     b = t + h - 1;
 133
 134     cl = RECT_LEFT(c->frame->area);
 135     ct = RECT_TOP(c->frame->area);
 136     cr = RECT_RIGHT(c->frame->area);
 137     cb = RECT_BOTTOM(c->frame->area);
 138
 139     if (config_resist_edge) {
 140         for (i = 0; i < screen_num_monitors; ++i) {
 141             area = screen_area_monitor(c->desktop, i);
 142             parea = screen_physical_area_monitor(i);
 143
 144             if (!RECT_INTERSECTS_RECT(*parea, c->frame->area))
 145                 continue;
 146
 147             al = RECT_LEFT(*area);
 148             at = RECT_TOP(*area);
 149             ar = RECT_RIGHT(*area);
 150             ab = RECT_BOTTOM(*area);
 151             pl = RECT_LEFT(*parea);
 152             pt = RECT_TOP(*parea);
 153             pr = RECT_RIGHT(*parea);
 154             pb = RECT_BOTTOM(*parea);
 155
 156             if (cl >= al && l < al && l >= al - config_resist_edge)
 157                 *x = al;
 158             else if (cr <= ar && r > ar && r <= ar + config_resist_edge)
 159                 *x = ar - w + 1;
 160             else if (cl >= pl && l < pl && l >= pl - config_resist_edge)
 161                 *x = pl;
 162             else if (cr <= pr && r > pr && r <= pr + config_resist_edge)
 163                 *x = pr - w + 1;
 164
 165             if (ct >= at && t < at && t >= at - config_resist_edge)
 166                 *y = at;
 167             else if (cb <= ab && b > ab && b < ab + config_resist_edge)
 168                 *y = ab - h + 1;
 169             else if (ct >= pt && t < pt && t >= pt - config_resist_edge)
 170                 *y = pt;
 171             else if (cb <= pb && b > pb && b < pb + config_resist_edge)
 172                 *y = pb - h + 1;
 173         }
 174     }
 175 }
 176
 177 void resist_size_windows(ObClient *c, gint *w, gint *h, ObCorner corn)
 178 {
 179     GList *it;
 180     ObClient *target; /* target */
 181     gint l, t, r, b; /* my left, top, right and bottom sides */
 182     gint dlt, drb; /* my destination left/top and right/bottom sides */
 183     gint tl, tt, tr, tb; /* target's left, top, right and bottom bottom sides*/
 184     gint incw, inch;
 185     ObClient *snapx = NULL, *snapy = NULL;
 186
 187     incw = c->size_inc.width;
 188     inch = c->size_inc.height;
 189
 190     l = RECT_LEFT(c->frame->area);
 191     r = RECT_RIGHT(c->frame->area);
 192     t = RECT_TOP(c->frame->area);
 193     b = RECT_BOTTOM(c->frame->area);
 194
 195     if (config_resist_win) {
 196         for (it = stacking_list; it; it = g_list_next(it)) {
 197             if (!WINDOW_IS_CLIENT(it->data))
 198                 continue;
 199             target = it->data;
 200
 201             /* don't snap to invisibles or ourself */
 202             if (!target->frame->visible || target == c) continue;
 203
 204             /* don't snap to windows in layers beneath */
 205             if(target->layer < c->layer && !config_resist_layers_below)
 206                 continue;
 207
 208             tl = RECT_LEFT(target->frame->area);
 209             tr = RECT_RIGHT(target->frame->area);
 210             tt = RECT_TOP(target->frame->area);
 211             tb = RECT_BOTTOM(target->frame->area);
 212
 213             if (snapx == NULL) {
 214                 /* horizontal snapping */
 215                 if (t < tb && b > tt) {
 216                     switch (corn) {
 217                     case OB_CORNER_TOPLEFT:
 218                     case OB_CORNER_BOTTOMLEFT:
 219                         dlt = l;
 220                         drb = r + *w - c->frame->area.width;
 221                         if (r < tl && drb >= tl &&
 222                             drb < tl + config_resist_win)
 223                             *w = tl - l, snapx = target;
 224                         break;
 225                     case OB_CORNER_TOPRIGHT:
 226                     case OB_CORNER_BOTTOMRIGHT:
 227                         dlt = l - *w + c->frame->area.width;
 228                         drb = r;
 229                         if (l > tr && dlt <= tr &&
 230                             dlt > tr - config_resist_win)
 231                             *w = r - tr, snapx = target;
 232                         break;
 233                     }
 234                 }
 235             }
 236
 237             if (snapy == NULL) {
 238                 /* vertical snapping */
 239                 if (l < tr && r > tl) {
 240                     switch (corn) {
 241                     case OB_CORNER_TOPLEFT:
 242                     case OB_CORNER_TOPRIGHT:
 243                         dlt = t;
 244                         drb = b + *h - c->frame->area.height;
 245                         if (b < tt && drb >= tt &&
 246                             drb < tt + config_resist_win)
 247                             *h = tt - t, snapy = target;
 248                         break;
 249                     case OB_CORNER_BOTTOMLEFT:
 250                     case OB_CORNER_BOTTOMRIGHT:
 251                         dlt = t - *h + c->frame->area.height;
 252                         drb = b;
 253                         if (t > tb && dlt <= tb &&
 254                             dlt > tb - config_resist_win)
 255                             *h = b - tb, snapy = target;
 256                         break;
 257                     }
 258                 }
 259             }
 260
 261             /* snapped both ways */
 262             if (snapx && snapy) break;
 263         }
 264     }
 265 }
 266
 267 void resist_size_monitors(ObClient *c, gint *w, gint *h, ObCorner corn)
 268 {
 269     gint l, t, r, b; /* my left, top, right and bottom sides */
 270     gint dlt, drb; /* my destination left/top and right/bottom sides */
 271     Rect *area, *parea;
 272     gint al, at, ar, ab; /* screen boundaries */
 273     gint pl, pt, pr, pb; /* physical screen boundaries */
 274     gint incw, inch;
 275     guint i;
 276
 277     l = RECT_LEFT(c->frame->area);
 278     r = RECT_RIGHT(c->frame->area);
 279     t = RECT_TOP(c->frame->area);
 280     b = RECT_BOTTOM(c->frame->area);
 281
 282     incw = c->size_inc.width;
 283     inch = c->size_inc.height;
 284
 285     for (i = 0; i < screen_num_monitors; ++i) {
 286         area = screen_area_monitor(c->desktop, i);
 287         parea = screen_physical_area_monitor(i);
 288
 289         if (!RECT_INTERSECTS_RECT(*parea, c->frame->area))
 290             continue;
 291
 292         /* get the screen boundaries */
 293         al = RECT_LEFT(*area);
 294         at = RECT_TOP(*area);
 295         ar = RECT_RIGHT(*area);
 296         ab = RECT_BOTTOM(*area);
 297         pl = RECT_LEFT(*parea);
 298         pt = RECT_TOP(*parea);
 299         pr = RECT_RIGHT(*parea);
 300         pb = RECT_BOTTOM(*parea);
 301
 302         if (config_resist_edge) {
 303             /* horizontal snapping */
 304             switch (corn) {
 305             case OB_CORNER_TOPLEFT:
 306             case OB_CORNER_BOTTOMLEFT:
 307                 dlt = l;
 308                 drb = r + *w - c->frame->area.width;
 309                 if (r <= ar && drb > ar && drb <= ar + config_resist_edge)
 310                     *w = ar - l + 1;
 311                 else if (r <= pr && drb > pr && drb <= pr + config_resist_edge)
 312                     *w = pr - l + 1;
 313                 break;
 314             case OB_CORNER_TOPRIGHT:
 315             case OB_CORNER_BOTTOMRIGHT:
 316                 dlt = l - *w + c->frame->area.width;
 317                 drb = r;
 318                 if (l >= al && dlt < al && dlt >= al - config_resist_edge)
 319                     *w = r - al + 1;
 320                 else if (l >= pl && dlt < pl && dlt >= pl - config_resist_edge)
 321                     *w = r - pl + 1;
 322                 break;
 323             }
 324
 325             /* vertical snapping */
 326             switch (corn) {
 327             case OB_CORNER_TOPLEFT:
 328             case OB_CORNER_TOPRIGHT:
 329                 dlt = t;
 330                 drb = b + *h - c->frame->area.height;
 331                 if (b <= ab && drb > ab && drb <= ab + config_resist_edge)
 332                     *h = ab - t + 1;
 333                 else if (b <= pb && drb > pb && drb <= pb + config_resist_edge)
 334                     *h = pb - t + 1;
 335                 break;
 336             case OB_CORNER_BOTTOMLEFT:
 337             case OB_CORNER_BOTTOMRIGHT:
 338                 dlt = t - *h + c->frame->area.height;
 339                 drb = b;
 340                 if (t >= at && dlt < at && dlt >= at - config_resist_edge)
 341                     *h = b - at + 1;
 342                 else if (t >= pt && dlt < pt && dlt >= pt - config_resist_edge)
 343                     *h = b - pt + 1;
 344                 break;
 345             }
 346         }
 347     }
 348 }