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