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(c->desktop, SCREEN_AREA_ALL_MONITORS,
 156                            &desired_area);
 157
 158         al = RECT_LEFT(*area);
 159         at = RECT_TOP(*area);
 160         ar = RECT_RIGHT(*area);
 161         ab = RECT_BOTTOM(*area);
 162         pl = RECT_LEFT(*parea);
 163         pt = RECT_TOP(*parea);
 164         pr = RECT_RIGHT(*parea);
 165         pb = RECT_BOTTOM(*parea);
 166
 167         if (cl >= al && l < al && l >= al - resist)
 168             *x = al;
 169         else if (cr <= ar && r > ar && r <= ar + resist)
 170             *x = ar - w + 1;
 171         else if (cl >= pl && l < pl && l >= pl - resist)
 172             *x = pl;
 173         else if (cr <= pr && r > pr && r <= pr + resist)
 174             *x = pr - w + 1;
 175
 176         if (ct >= at && t < at && t >= at - resist)
 177             *y = at;
 178         else if (cb <= ab && b > ab && b < ab + resist)
 179             *y = ab - h + 1;
 180         else if (ct >= pt && t < pt && t >= pt - resist)
 181             *y = pt;
 182         else if (cb <= pb && b > pb && b < pb + resist)
 183             *y = pb - h + 1;
 184
 185         g_free(area);
 186         g_free(parea);
 187     }
 188
 189     frame_frame_gravity(c->frame, x, y, c->area.width, c->area.height);
 190 }
 191
 192 void resist_size_windows(ObClient *c, gint resist, gint *w, gint *h,
 193                          ObCorner corn)
 194 {
 195     GList *it;
 196     ObClient *target; /* target */
 197     gint l, t, r, b; /* my left, top, right and bottom sides */
 198     gint dlt, drb; /* my destination left/top and right/bottom sides */
 199     gint tl, tt, tr, tb; /* target's left, top, right and bottom bottom sides*/
 200     gint incw, inch;
 201     ObClient *snapx = NULL, *snapy = NULL;
 202
 203     if (!resist) return;
 204
 205     incw = c->size_inc.width;
 206     inch = c->size_inc.height;
 207
 208     l = RECT_LEFT(c->frame->area);
 209     r = RECT_RIGHT(c->frame->area);
 210     t = RECT_TOP(c->frame->area);
 211     b = RECT_BOTTOM(c->frame->area);
 212
 213     for (it = stacking_list; it; it = g_list_next(it)) {
 214         if (!WINDOW_IS_CLIENT(it->data))
 215             continue;
 216         target = it->data;
 217
 218         /* don't snap to invisibles or ourself */
 219         if (!target->frame->visible || target == c) continue;
 220
 221         tl = RECT_LEFT(target->frame->area);
 222         tr = RECT_RIGHT(target->frame->area);
 223         tt = RECT_TOP(target->frame->area);
 224         tb = RECT_BOTTOM(target->frame->area);
 225
 226         if (snapx == NULL) {
 227             /* horizontal snapping */
 228             if (t < tb && b > tt) {
 229                 switch (corn) {
 230                 case OB_CORNER_TOPLEFT:
 231                 case OB_CORNER_BOTTOMLEFT:
 232                     dlt = l;
 233                     drb = r + *w - c->frame->area.width;
 234                     if (r < tl && drb >= tl &&
 235                         drb < tl + resist)
 236                         *w = tl - l, snapx = target;
 237                     break;
 238                 case OB_CORNER_TOPRIGHT:
 239                 case OB_CORNER_BOTTOMRIGHT:
 240                     dlt = l - *w + c->frame->area.width;
 241                     drb = r;
 242                     if (l > tr && dlt <= tr &&
 243                         dlt > tr - resist)
 244                         *w = r - tr, snapx = target;
 245                     break;
 246                 }
 247             }
 248         }
 249
 250         if (snapy == NULL) {
 251             /* vertical snapping */
 252             if (l < tr && r > tl) {
 253                 switch (corn) {
 254                 case OB_CORNER_TOPLEFT:
 255                 case OB_CORNER_TOPRIGHT:
 256                     dlt = t;
 257                     drb = b + *h - c->frame->area.height;
 258                     if (b < tt && drb >= tt &&
 259                         drb < tt + resist)
 260                         *h = tt - t, snapy = target;
 261                     break;
 262                 case OB_CORNER_BOTTOMLEFT:
 263                 case OB_CORNER_BOTTOMRIGHT:
 264                     dlt = t - *h + c->frame->area.height;
 265                     drb = b;
 266                     if (t > tb && dlt <= tb &&
 267                         dlt > tb - resist)
 268                         *h = b - tb, snapy = target;
 269                     break;
 270                 }
 271             }
 272         }
 273
 274         /* snapped both ways */
 275         if (snapx && snapy) break;
 276     }
 277 }
 278
 279 void resist_size_monitors(ObClient *c, gint resist, gint *w, gint *h,
 280                           ObCorner corn)
 281 {
 282     gint l, t, r, b; /* my left, top, right and bottom sides */
 283     gint dlt, drb; /* my destination left/top and right/bottom sides */
 284     Rect *area, *parea;
 285     gint al, at, ar, ab; /* screen boundaries */
 286     gint pl, pt, pr, pb; /* physical screen boundaries */
 287     gint incw, inch;
 288     guint i;
 289     Rect desired_area;
 290
 291     if (!resist) return;
 292
 293     l = RECT_LEFT(c->frame->area);
 294     r = RECT_RIGHT(c->frame->area);
 295     t = RECT_TOP(c->frame->area);
 296     b = RECT_BOTTOM(c->frame->area);
 297
 298     incw = c->size_inc.width;
 299     inch = c->size_inc.height;
 300
 301     RECT_SET(desired_area, c->area.x, c->area.y, *w, *h);
 302
 303     for (i = 0; i < screen_num_monitors; ++i) {
 304         parea = screen_physical_area_monitor(i);
 305
 306         if (!RECT_INTERSECTS_RECT(*parea, c->frame->area)) {
 307             g_free(parea);
 308             continue;
 309         }
 310
 311         area = screen_area(c->desktop, SCREEN_AREA_ALL_MONITORS,
 312                            &desired_area);
 313
 314         /* get the screen boundaries */
 315         al = RECT_LEFT(*area);
 316         at = RECT_TOP(*area);
 317         ar = RECT_RIGHT(*area);
 318         ab = RECT_BOTTOM(*area);
 319         pl = RECT_LEFT(*parea);
 320         pt = RECT_TOP(*parea);
 321         pr = RECT_RIGHT(*parea);
 322         pb = RECT_BOTTOM(*parea);
 323
 324         /* horizontal snapping */
 325         switch (corn) {
 326         case OB_CORNER_TOPLEFT:
 327         case OB_CORNER_BOTTOMLEFT:
 328             dlt = l;
 329             drb = r + *w - c->frame->area.width;
 330             if (r <= ar && drb > ar && drb <= ar + resist)
 331                 *w = ar - l + 1;
 332             else if (r <= pr && drb > pr && drb <= pr + resist)
 333                 *w = pr - l + 1;
 334             break;
 335         case OB_CORNER_TOPRIGHT:
 336         case OB_CORNER_BOTTOMRIGHT:
 337             dlt = l - *w + c->frame->area.width;
 338             drb = r;
 339             if (l >= al && dlt < al && dlt >= al - resist)
 340                 *w = r - al + 1;
 341             else if (l >= pl && dlt < pl && dlt >= pl - resist)
 342                 *w = r - pl + 1;
 343             break;
 344         }
 345
 346         /* vertical snapping */
 347         switch (corn) {
 348         case OB_CORNER_TOPLEFT:
 349         case OB_CORNER_TOPRIGHT:
 350             dlt = t;
 351             drb = b + *h - c->frame->area.height;
 352             if (b <= ab && drb > ab && drb <= ab + resist)
 353                 *h = ab - t + 1;
 354             else if (b <= pb && drb > pb && drb <= pb + resist)
 355                 *h = pb - t + 1;
 356             break;
 357         case OB_CORNER_BOTTOMLEFT:
 358         case OB_CORNER_BOTTOMRIGHT:
 359             dlt = t - *h + c->frame->area.height;
 360             drb = b;
 361             if (t >= at && dlt < at && dlt >= at - resist)
 362                 *h = b - at + 1;
 363             else if (t >= pt && dlt < pt && dlt >= pt - resist)
 364                 *h = b - pt + 1;
 365             break;
 366         }
 367
 368         g_free(area);
 369         g_free(parea);
 370     }
 371 }