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