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 resist, 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     if (!resist) return;
  38
  39     frame_client_gravity(c->frame, x, y, c->area.width, c->area.height);
  40
  41     w = c->frame->area.width;
  42     h = c->frame->area.height;
  43
  44     l = *x;
  45     t = *y;
  46     r = l + w - 1;
  47     b = t + h - 1;
  48
  49     cl = RECT_LEFT(c->frame->area);
  50     ct = RECT_TOP(c->frame->area);
  51     cr = RECT_RIGHT(c->frame->area);
  52     cb = RECT_BOTTOM(c->frame->area);
  53
  54     for (it = stacking_list; it; it = g_list_next(it)) {
  55         ObClient *target;
  56         gint tl, tt, tr, tb; /* 1 past the target's edges on each side */
  57
  58         if (!WINDOW_IS_CLIENT(it->data))
  59             continue;
  60         target = it->data;
  61
  62         /* don't snap to self or non-visibles */
  63         if (!target->frame->visible || target == c) continue;
  64
  65         /* don't snap to windows in layers beneath */
  66         if(target->layer < c->layer && !config_resist_layers_below)
  67             continue;
  68
  69         tl = RECT_LEFT(target->frame->area) - 1;
  70         tt = RECT_TOP(target->frame->area) - 1;
  71         tr = RECT_RIGHT(target->frame->area) + 1;
  72         tb = RECT_BOTTOM(target->frame->area) + 1;
  73
  74         /* snapx and snapy ensure that the window snaps to the top-most
  75            window edge available, without going all the way from
  76            bottom-to-top in the stacking list
  77         */
  78         if (snapx == NULL) {
  79             if (ct < tb && cb > tt) {
  80                 if (cl >= tr && l < tr && l >= tr - resist)
  81                     *x = tr, snapx = target;
  82                 else if (cr <= tl && r > tl &&
  83                          r <= tl + resist)
  84                     *x = tl - w + 1, snapx = target;
  85                 if (snapx != NULL) {
  86                     /* try to corner snap to the window */
  87                     if (ct > tt && t <= tt &&
  88                         t > tt - resist)
  89                         *y = tt + 1, snapy = target;
  90                     else if (cb < tb && b >= tb &&
  91                              b < tb + resist)
  92                         *y = tb - h, snapy = target;
  93                 }
  94             }
  95         }
  96         if (snapy == NULL) {
  97             if (cl < tr && cr > tl) {
  98                 if (ct >= tb && t < tb && t >= tb - resist)
  99                     *y = tb, snapy = target;
 100                 else if (cb <= tt && b > tt &&
 101                          b <= tt + resist)
 102                     *y = tt - h + 1, snapy = target;
 103                 if (snapy != NULL) {
 104                     /* try to corner snap to the window */
 105                     if (cl > tl && l <= tl &&
 106                         l > tl - resist)
 107                         *x = tl + 1, snapx = target;
 108                     else if (cr < tr && r >= tr &&
 109                              r < tr + resist)
 110                         *x = tr - w, snapx = target;
 111                 }
 112             }
 113         }
 114
 115         if (snapx && snapy) break;
 116     }
 117
 118     frame_frame_gravity(c->frame, x, y, c->area.width, c->area.height);
 119 }
 120
 121 void resist_move_monitors(ObClient *c, gint resist, gint *x, gint *y)
 122 {
 123     Rect *area, *parea;
 124     guint i;
 125     gint l, t, r, b; /* requested edges */
 126     gint al, at, ar, ab; /* screen area edges */
 127     gint pl, pt, pr, pb; /* physical screen area edges */
 128     gint cl, ct, cr, cb; /* current edges */
 129     gint w, h; /* current size */
 130
 131     if (!resist) return;
 132
 133     frame_client_gravity(c->frame, x, y, c->area.width, c->area.height);
 134
 135     w = c->frame->area.width;
 136     h = c->frame->area.height;
 137
 138     l = *x;
 139     t = *y;
 140     r = l + w - 1;
 141     b = t + h - 1;
 142
 143     cl = RECT_LEFT(c->frame->area);
 144     ct = RECT_TOP(c->frame->area);
 145     cr = RECT_RIGHT(c->frame->area);
 146     cb = RECT_BOTTOM(c->frame->area);
 147
 148     for (i = 0; i < screen_num_monitors; ++i) {
 149         area = screen_area_monitor(c->desktop, i);
 150         parea = screen_physical_area_monitor(i);
 151
 152         if (!RECT_INTERSECTS_RECT(*parea, c->frame->area))
 153             continue;
 154
 155         al = RECT_LEFT(*area);
 156         at = RECT_TOP(*area);
 157         ar = RECT_RIGHT(*area);
 158         ab = RECT_BOTTOM(*area);
 159         pl = RECT_LEFT(*parea);
 160         pt = RECT_TOP(*parea);
 161         pr = RECT_RIGHT(*parea);
 162         pb = RECT_BOTTOM(*parea);
 163
 164         if (cl >= al && l < al && l >= al - resist)
 165             *x = al;
 166         else if (cr <= ar && r > ar && r <= ar + resist)
 167             *x = ar - w + 1;
 168         else if (cl >= pl && l < pl && l >= pl - resist)
 169             *x = pl;
 170         else if (cr <= pr && r > pr && r <= pr + resist)
 171             *x = pr - w + 1;
 172
 173         if (ct >= at && t < at && t >= at - resist)
 174             *y = at;
 175         else if (cb <= ab && b > ab && b < ab + resist)
 176             *y = ab - h + 1;
 177         else if (ct >= pt && t < pt && t >= pt - resist)
 178             *y = pt;
 179         else if (cb <= pb && b > pb && b < pb + resist)
 180             *y = pb - h + 1;
 181     }
 182
 183     frame_frame_gravity(c->frame, x, y, c->area.width, c->area.height);
 184 }
 185
 186 void resist_size_windows(ObClient *c, gint resist, gint *w, gint *h,
 187                          ObCorner corn)
 188 {
 189     GList *it;
 190     ObClient *target; /* target */
 191     gint l, t, r, b; /* my left, top, right and bottom sides */
 192     gint dlt, drb; /* my destination left/top and right/bottom sides */
 193     gint tl, tt, tr, tb; /* target's left, top, right and bottom bottom sides*/
 194     gint incw, inch;
 195     ObClient *snapx = NULL, *snapy = NULL;
 196
 197     if (!resist) return;
 198
 199     incw = c->size_inc.width;
 200     inch = c->size_inc.height;
 201
 202     l = RECT_LEFT(c->frame->area);
 203     r = RECT_RIGHT(c->frame->area);
 204     t = RECT_TOP(c->frame->area);
 205     b = RECT_BOTTOM(c->frame->area);
 206
 207     for (it = stacking_list; it; it = g_list_next(it)) {
 208         if (!WINDOW_IS_CLIENT(it->data))
 209             continue;
 210         target = it->data;
 211
 212         /* don't snap to invisibles or ourself */
 213         if (!target->frame->visible || target == c) continue;
 214
 215         /* don't snap to windows in layers beneath */
 216         if(target->layer < c->layer && !config_resist_layers_below)
 217             continue;
 218
 219         tl = RECT_LEFT(target->frame->area);
 220         tr = RECT_RIGHT(target->frame->area);
 221         tt = RECT_TOP(target->frame->area);
 222         tb = RECT_BOTTOM(target->frame->area);
 223
 224         if (snapx == NULL) {
 225             /* horizontal snapping */
 226             if (t < tb && b > tt) {
 227                 switch (corn) {
 228                 case OB_CORNER_TOPLEFT:
 229                 case OB_CORNER_BOTTOMLEFT:
 230                     dlt = l;
 231                     drb = r + *w - c->frame->area.width;
 232                     if (r < tl && drb >= tl &&
 233                         drb < tl + resist)
 234                         *w = tl - l, snapx = target;
 235                     break;
 236                 case OB_CORNER_TOPRIGHT:
 237                 case OB_CORNER_BOTTOMRIGHT:
 238                     dlt = l - *w + c->frame->area.width;
 239                     drb = r;
 240                     if (l > tr && dlt <= tr &&
 241                         dlt > tr - resist)
 242                         *w = r - tr, snapx = target;
 243                     break;
 244                 }
 245             }
 246         }
 247
 248         if (snapy == NULL) {
 249             /* vertical snapping */
 250             if (l < tr && r > tl) {
 251                 switch (corn) {
 252                 case OB_CORNER_TOPLEFT:
 253                 case OB_CORNER_TOPRIGHT:
 254                     dlt = t;
 255                     drb = b + *h - c->frame->area.height;
 256                     if (b < tt && drb >= tt &&
 257                         drb < tt + resist)
 258                         *h = tt - t, snapy = target;
 259                     break;
 260                 case OB_CORNER_BOTTOMLEFT:
 261                 case OB_CORNER_BOTTOMRIGHT:
 262                     dlt = t - *h + c->frame->area.height;
 263                     drb = b;
 264                     if (t > tb && dlt <= tb &&
 265                         dlt > tb - resist)
 266                         *h = b - tb, snapy = target;
 267                     break;
 268                 }
 269             }
 270         }
 271
 272         /* snapped both ways */
 273         if (snapx && snapy) break;
 274     }
 275 }
 276
 277 void resist_size_monitors(ObClient *c, gint resist, gint *w, gint *h,
 278                           ObCorner corn)
 279 {
 280     gint l, t, r, b; /* my left, top, right and bottom sides */
 281     gint dlt, drb; /* my destination left/top and right/bottom sides */
 282     Rect *area, *parea;
 283     gint al, at, ar, ab; /* screen boundaries */
 284     gint pl, pt, pr, pb; /* physical screen boundaries */
 285     gint incw, inch;
 286     guint i;
 287
 288     if (!resist) return;
 289
 290     l = RECT_LEFT(c->frame->area);
 291     r = RECT_RIGHT(c->frame->area);
 292     t = RECT_TOP(c->frame->area);
 293     b = RECT_BOTTOM(c->frame->area);
 294
 295     incw = c->size_inc.width;
 296     inch = c->size_inc.height;
 297
 298     for (i = 0; i < screen_num_monitors; ++i) {
 299         area = screen_area_monitor(c->desktop, i);
 300         parea = screen_physical_area_monitor(i);
 301
 302         if (!RECT_INTERSECTS_RECT(*parea, c->frame->area))
 303             continue;
 304
 305         /* get the screen boundaries */
 306         al = RECT_LEFT(*area);
 307         at = RECT_TOP(*area);
 308         ar = RECT_RIGHT(*area);
 309         ab = RECT_BOTTOM(*area);
 310         pl = RECT_LEFT(*parea);
 311         pt = RECT_TOP(*parea);
 312         pr = RECT_RIGHT(*parea);
 313         pb = RECT_BOTTOM(*parea);
 314
 315         /* horizontal snapping */
 316         switch (corn) {
 317         case OB_CORNER_TOPLEFT:
 318         case OB_CORNER_BOTTOMLEFT:
 319             dlt = l;
 320             drb = r + *w - c->frame->area.width;
 321             if (r <= ar && drb > ar && drb <= ar + resist)
 322                 *w = ar - l + 1;
 323             else if (r <= pr && drb > pr && drb <= pr + resist)
 324                 *w = pr - l + 1;
 325             break;
 326         case OB_CORNER_TOPRIGHT:
 327         case OB_CORNER_BOTTOMRIGHT:
 328             dlt = l - *w + c->frame->area.width;
 329             drb = r;
 330             if (l >= al && dlt < al && dlt >= al - resist)
 331                 *w = r - al + 1;
 332             else if (l >= pl && dlt < pl && dlt >= pl - resist)
 333                 *w = r - pl + 1;
 334             break;
 335         }
 336
 337         /* vertical snapping */
 338         switch (corn) {
 339         case OB_CORNER_TOPLEFT:
 340         case OB_CORNER_TOPRIGHT:
 341             dlt = t;
 342             drb = b + *h - c->frame->area.height;
 343             if (b <= ab && drb > ab && drb <= ab + resist)
 344                 *h = ab - t + 1;
 345             else if (b <= pb && drb > pb && drb <= pb + resist)
 346                 *h = pb - t + 1;
 347             break;
 348         case OB_CORNER_BOTTOMLEFT:
 349         case OB_CORNER_BOTTOMRIGHT:
 350             dlt = t - *h + c->frame->area.height;
 351             drb = b;
 352             if (t >= at && dlt < at && dlt >= at - resist)
 353                 *h = b - at + 1;
 354             else if (t >= pt && dlt < pt && dlt >= pt - resist)
 355                 *h = b - pt + 1;
 356             break;
 357         }
 358     }
 359 }