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