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