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         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 - resist)
  77                     *x = tr, snapx = target;
  78                 else if (cr <= tl && r > tl &&
  79                          r <= tl + resist)
  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 - resist)
  85                         *y = tt + 1, snapy = target;
  86                     else if (cb < tb && b >= tb &&
  87                              b < tb + resist)
  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 - resist)
  95                     *y = tb, snapy = target;
  96                 else if (cb <= tt && b > tt &&
  97                          b <= tt + resist)
  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 - resist)
 103                         *x = tl + 1, snapx = target;
 104                     else if (cr < tr && r >= tr &&
 105                              r < tr + resist)
 106                         *x = tr - w, snapx = target;
 107                 }
 108             }
 109         }
 110
 111         if (snapx && snapy) break;
 112     }
 113
 114     frame_frame_gravity(c->frame, x, y, c->area.width, c->area.height);
 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     Rect desired_area;
 127
 128     if (!resist) return;
 129
 130     frame_client_gravity(c->frame, x, y, c->area.width, c->area.height);
 131
 132     w = c->frame->area.width;
 133     h = c->frame->area.height;
 134
 135     l = *x;
 136     t = *y;
 137     r = l + w - 1;
 138     b = t + h - 1;
 139
 140     cl = RECT_LEFT(c->frame->area);
 141     ct = RECT_TOP(c->frame->area);
 142     cr = RECT_RIGHT(c->frame->area);
 143     cb = RECT_BOTTOM(c->frame->area);
 144
 145     RECT_SET(desired_area, *x, *y, c->area.width, c->area.height);
 146
 147     for (i = 0; i < screen_num_monitors; ++i) {
 148         parea = screen_physical_area_monitor(i);
 149
 150         if (!RECT_INTERSECTS_RECT(*parea, c->frame->area)) {
 151             g_free(parea);
 152             continue;
 153         }
 154
 155         area = screen_area_monitor(c->desktop, i, &desired_area);
 156
 157         al = RECT_LEFT(*area);
 158         at = RECT_TOP(*area);
 159         ar = RECT_RIGHT(*area);
 160         ab = RECT_BOTTOM(*area);
 161         pl = RECT_LEFT(*parea);
 162         pt = RECT_TOP(*parea);
 163         pr = RECT_RIGHT(*parea);
 164         pb = RECT_BOTTOM(*parea);
 165
 166         if (cl >= al && l < al && l >= al - resist)
 167             *x = al;
 168         else if (cr <= ar && r > ar && r <= ar + resist)
 169             *x = ar - w + 1;
 170         else if (cl >= pl && l < pl && l >= pl - resist)
 171             *x = pl;
 172         else if (cr <= pr && r > pr && r <= pr + resist)
 173             *x = pr - w + 1;
 174
 175         if (ct >= at && t < at && t >= at - resist)
 176             *y = at;
 177         else if (cb <= ab && b > ab && b < ab + resist)
 178             *y = ab - h + 1;
 179         else if (ct >= pt && t < pt && t >= pt - resist)
 180             *y = pt;
 181         else if (cb <= pb && b > pb && b < pb + resist)
 182             *y = pb - h + 1;
 183
 184         g_free(area);
 185         g_free(parea);
 186     }
 187
 188     frame_frame_gravity(c->frame, x, y, c->area.width, c->area.height);
 189 }
 190
 191 void resist_size_windows(ObClient *c, gint resist, gint *w, gint *h,
 192                          ObCorner corn)
 193 {
 194     GList *it;
 195     ObClient *target; /* target */
 196     gint l, t, r, b; /* my left, top, right and bottom sides */
 197     gint dlt, drb; /* my destination left/top and right/bottom sides */
 198     gint tl, tt, tr, tb; /* target's left, top, right and bottom bottom sides*/
 199     gint incw, inch;
 200     ObClient *snapx = NULL, *snapy = NULL;
 201
 202     if (!resist) return;
 203
 204     incw = c->size_inc.width;
 205     inch = c->size_inc.height;
 206
 207     l = RECT_LEFT(c->frame->area);
 208     r = RECT_RIGHT(c->frame->area);
 209     t = RECT_TOP(c->frame->area);
 210     b = RECT_BOTTOM(c->frame->area);
 211
 212     for (it = stacking_list; it; it = g_list_next(it)) {
 213         if (!WINDOW_IS_CLIENT(it->data))
 214             continue;
 215         target = it->data;
 216
 217         /* don't snap to invisibles or ourself */
 218         if (!target->frame->visible || target == c) continue;
 219
 220         tl = RECT_LEFT(target->frame->area);
 221         tr = RECT_RIGHT(target->frame->area);
 222         tt = RECT_TOP(target->frame->area);
 223         tb = RECT_BOTTOM(target->frame->area);
 224
 225         if (snapx == NULL) {
 226             /* horizontal snapping */
 227             if (t < tb && b > tt) {
 228                 switch (corn) {
 229                 case OB_CORNER_TOPLEFT:
 230                 case OB_CORNER_BOTTOMLEFT:
 231                     dlt = l;
 232                     drb = r + *w - c->frame->area.width;
 233                     if (r < tl && drb >= tl &&
 234                         drb < tl + resist)
 235                         *w = tl - l, snapx = target;
 236                     break;
 237                 case OB_CORNER_TOPRIGHT:
 238                 case OB_CORNER_BOTTOMRIGHT:
 239                     dlt = l - *w + c->frame->area.width;
 240                     drb = r;
 241                     if (l > tr && dlt <= tr &&
 242                         dlt > tr - resist)
 243                         *w = r - tr, snapx = target;
 244                     break;
 245                 }
 246             }
 247         }
 248
 249         if (snapy == NULL) {
 250             /* vertical snapping */
 251             if (l < tr && r > tl) {
 252                 switch (corn) {
 253                 case OB_CORNER_TOPLEFT:
 254                 case OB_CORNER_TOPRIGHT:
 255                     dlt = t;
 256                     drb = b + *h - c->frame->area.height;
 257                     if (b < tt && drb >= tt &&
 258                         drb < tt + resist)
 259                         *h = tt - t, snapy = target;
 260                     break;
 261                 case OB_CORNER_BOTTOMLEFT:
 262                 case OB_CORNER_BOTTOMRIGHT:
 263                     dlt = t - *h + c->frame->area.height;
 264                     drb = b;
 265                     if (t > tb && dlt <= tb &&
 266                         dlt > tb - resist)
 267                         *h = b - tb, snapy = target;
 268                     break;
 269                 }
 270             }
 271         }
 272
 273         /* snapped both ways */
 274         if (snapx && snapy) break;
 275     }
 276 }
 277
 278 void resist_size_monitors(ObClient *c, gint resist, gint *w, gint *h,
 279                           ObCorner corn)
 280 {
 281     gint l, t, r, b; /* my left, top, right and bottom sides */
 282     gint dlt, drb; /* my destination left/top and right/bottom sides */
 283     Rect *area, *parea;
 284     gint al, at, ar, ab; /* screen boundaries */
 285     gint pl, pt, pr, pb; /* physical screen boundaries */
 286     gint incw, inch;
 287     guint i;
 288     Rect desired_area;
 289
 290     if (!resist) return;
 291
 292     l = RECT_LEFT(c->frame->area);
 293     r = RECT_RIGHT(c->frame->area);
 294     t = RECT_TOP(c->frame->area);
 295     b = RECT_BOTTOM(c->frame->area);
 296
 297     incw = c->size_inc.width;
 298     inch = c->size_inc.height;
 299
 300     RECT_SET(desired_area, c->area.x, c->area.y, *w, *h);
 301
 302     for (i = 0; i < screen_num_monitors; ++i) {
 303         parea = screen_physical_area_monitor(i);
 304
 305         if (!RECT_INTERSECTS_RECT(*parea, c->frame->area)) {
 306             g_free(parea);
 307             continue;
 308         }
 309
 310         area = screen_area_monitor(c->desktop, i, &desired_area);
 311
 312         /* get the screen boundaries */
 313         al = RECT_LEFT(*area);
 314         at = RECT_TOP(*area);
 315         ar = RECT_RIGHT(*area);
 316         ab = RECT_BOTTOM(*area);
 317         pl = RECT_LEFT(*parea);
 318         pt = RECT_TOP(*parea);
 319         pr = RECT_RIGHT(*parea);
 320         pb = RECT_BOTTOM(*parea);
 321
 322         /* horizontal snapping */
 323         switch (corn) {
 324         case OB_CORNER_TOPLEFT:
 325         case OB_CORNER_BOTTOMLEFT:
 326             dlt = l;
 327             drb = r + *w - c->frame->area.width;
 328             if (r <= ar && drb > ar && drb <= ar + resist)
 329                 *w = ar - l + 1;
 330             else if (r <= pr && drb > pr && drb <= pr + resist)
 331                 *w = pr - l + 1;
 332             break;
 333         case OB_CORNER_TOPRIGHT:
 334         case OB_CORNER_BOTTOMRIGHT:
 335             dlt = l - *w + c->frame->area.width;
 336             drb = r;
 337             if (l >= al && dlt < al && dlt >= al - resist)
 338                 *w = r - al + 1;
 339             else if (l >= pl && dlt < pl && dlt >= pl - resist)
 340                 *w = r - pl + 1;
 341             break;
 342         }
 343
 344         /* vertical snapping */
 345         switch (corn) {
 346         case OB_CORNER_TOPLEFT:
 347         case OB_CORNER_TOPRIGHT:
 348             dlt = t;
 349             drb = b + *h - c->frame->area.height;
 350             if (b <= ab && drb > ab && drb <= ab + resist)
 351                 *h = ab - t + 1;
 352             else if (b <= pb && drb > pb && drb <= pb + resist)
 353                 *h = pb - t + 1;
 354             break;
 355         case OB_CORNER_BOTTOMLEFT:
 356         case OB_CORNER_BOTTOMRIGHT:
 357             dlt = t - *h + c->frame->area.height;
 358             drb = b;
 359             if (t >= at && dlt < at && dlt >= at - resist)
 360                 *h = b - at + 1;
 361             else if (t >= pt && dlt < pt && dlt >= pt - resist)
 362                 *h = b - pt + 1;
 363             break;
 364         }
 365
 366         g_free(area);
 367         g_free(parea);
 368     }
 369 }