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) 2003        Ben Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "client.h"
  20 #include "frame.h"
  21 #include "stacking.h"
  22 #include "screen.h"
  23 #include "config.h"
  24 #include "parser/parse.h"
  25
  26 #include <glib.h>
  27
  28 void resist_move_windows(ObClient *c, gint *x, gint *y)
  29 {
  30     GList *it;
  31     gint l, t, r, b; /* requested edges */
  32     gint cl, ct, cr, cb; /* current edges */
  33     gint w, h; /* current size */
  34     ObClient *snapx = NULL, *snapy = NULL;
  35
  36     w = c->frame->area.width;
  37     h = c->frame->area.height;
  38
  39     l = *x;
  40     t = *y;
  41     r = l + w - 1;
  42     b = t + h - 1;
  43
  44     cl = RECT_LEFT(c->frame->area);
  45     ct = RECT_TOP(c->frame->area);
  46     cr = RECT_RIGHT(c->frame->area);
  47     cb = RECT_BOTTOM(c->frame->area);
  48
  49     if (config_resist_win)
  50         for (it = stacking_list; it != NULL; it = it->next) {
  51             ObClient *target;
  52             int tl, tt, tr, tb; /* 1 past the target's edges on each side */
  53
  54             if (!WINDOW_IS_CLIENT(it->data))
  55                 continue;
  56             target = it->data;
  57             /* don't snap to self or non-visibles */
  58             if (!target->frame->visible || target == c) continue;
  59
  60             tl = RECT_LEFT(target->frame->area) - 1;
  61             tt = RECT_TOP(target->frame->area) - 1;
  62             tr = RECT_RIGHT(target->frame->area) + 1;
  63             tb = RECT_BOTTOM(target->frame->area) + 1;
  64
  65             /* snapx and snapy ensure that the window snaps to the top-most
  66                window edge available, without going all the way from
  67                bottom-to-top in the stacking list
  68             */
  69             if (snapx == NULL) {
  70                 if (ct < tb && cb > tt) {
  71                     if (cl >= tr && l < tr && l >= tr - config_resist_win)
  72                         *x = tr, snapx = target;
  73                     else if (cr <= tl && r > tl &&
  74                              r <= tl + config_resist_win)
  75                         *x = tl - w + 1, snapx = target;
  76                     if (snapx != NULL) {
  77                         /* try to corner snap to the window */
  78                         if (ct > tt && t <= tt &&
  79                             t > tt - config_resist_win)
  80                             *y = tt + 1, snapy = target;
  81                         else if (cb < tb && b >= tb &&
  82                                  b < tb + config_resist_win)
  83                             *y = tb - h, snapy = target;
  84                     }
  85                 }
  86             }
  87             if (snapy == NULL) {
  88                 if (cl < tr && cr > tl) {
  89                     if (ct >= tb && t < tb && t >= tb - config_resist_win)
  90                         *y = tb, snapy = target;
  91                     else if (cb <= tt && b > tt &&
  92                              b <= tt + config_resist_win)
  93                         *y = tt - h + 1, snapy = target;
  94                     if (snapy != NULL) {
  95                         /* try to corner snap to the window */
  96                         if (cl > tl && l <= tl &&
  97                             l > tl - config_resist_win)
  98                             *x = tl + 1, snapx = target;
  99                         else if (cr < tr && r >= tr &&
 100                                  r < tr + config_resist_win)
 101                             *x = tr - w, snapx = target;
 102                     }
 103                 }
 104             }
 105
 106             if (snapx && snapy) break;
 107         }
 108 }
 109
 110 void resist_move_monitors(ObClient *c, gint *x, gint *y)
 111 {
 112     Rect *area;
 113     guint i;
 114     gint l, t, r, b; /* requested edges */
 115     gint al, at, ar, ab; /* screen area edges */
 116     gint cl, ct, cr, cb; /* current edges */
 117     gint w, h; /* current size */
 118
 119     w = c->frame->area.width;
 120     h = c->frame->area.height;
 121
 122     l = *x;
 123     t = *y;
 124     r = l + w - 1;
 125     b = t + h - 1;
 126
 127     cl = RECT_LEFT(c->frame->area);
 128     ct = RECT_TOP(c->frame->area);
 129     cr = RECT_RIGHT(c->frame->area);
 130     cb = RECT_BOTTOM(c->frame->area);
 131
 132     if (config_resist_edge) {
 133         for (i = 0; i < screen_num_monitors; ++i) {
 134             area = screen_area_monitor(c->desktop, i);
 135
 136             if (!RECT_INTERSECTS_RECT(*area, c->frame->area))
 137                 continue;
 138
 139             al = RECT_LEFT(*area);
 140             at = RECT_TOP(*area);
 141             ar = RECT_RIGHT(*area);
 142             ab = RECT_BOTTOM(*area);
 143
 144             if (cl >= al && l < al && l >= al - config_resist_edge)
 145                 *x = al;
 146             else if (cr <= ar && r > ar && r <= ar + config_resist_edge)
 147                 *x = ar - w + 1;
 148             if (ct >= at && t < at && t >= at - config_resist_edge)
 149                 *y = at;
 150             else if (cb <= ab && b > ab && b < ab + config_resist_edge)
 151                 *y = ab - h + 1;
 152         }
 153     }
 154 }
 155
 156 void resist_size_windows(ObClient *c, gint *w, gint *h, ObCorner corn)
 157 {
 158     GList *it;
 159     ObClient *target; /* target */
 160     gint l, t, r, b; /* my left, top, right and bottom sides */
 161     gint dlt, drb; /* my destination left/top and right/bottom sides */
 162     gint tl, tt, tr, tb; /* target's left, top, right and bottom bottom sides*/
 163     gint incw, inch;
 164     ObClient *snapx = NULL, *snapy = NULL;
 165
 166     incw = c->size_inc.width;
 167     inch = c->size_inc.height;
 168
 169     l = RECT_LEFT(c->frame->area);
 170     r = RECT_RIGHT(c->frame->area);
 171     t = RECT_TOP(c->frame->area);
 172     b = RECT_BOTTOM(c->frame->area);
 173
 174     if (config_resist_win) {
 175         for (it = stacking_list; it != NULL; it = it->next) {
 176             if (!WINDOW_IS_CLIENT(it->data))
 177                 continue;
 178             target = it->data;
 179
 180             /* don't snap to invisibles or ourself */
 181             if (!target->frame->visible || target == c) continue;
 182
 183             tl = RECT_LEFT(target->frame->area);
 184             tr = RECT_RIGHT(target->frame->area);
 185             tt = RECT_TOP(target->frame->area);
 186             tb = RECT_BOTTOM(target->frame->area);
 187
 188             if (snapx == NULL) {
 189                 /* horizontal snapping */
 190                 if (t < tb && b > tt) {
 191                     switch (corn) {
 192                     case OB_CORNER_TOPLEFT:
 193                     case OB_CORNER_BOTTOMLEFT:
 194                         dlt = l;
 195                         drb = r + *w - c->frame->area.width;
 196                         if (r < tl && drb >= tl &&
 197                             drb < tl + config_resist_win)
 198                             *w = tl - l, snapx = target;
 199                         break;
 200                     case OB_CORNER_TOPRIGHT:
 201                     case OB_CORNER_BOTTOMRIGHT:
 202                         dlt = l - *w + c->frame->area.width;
 203                         drb = r;
 204                         if (l > tr && dlt <= tr &&
 205                             dlt > tr - config_resist_win)
 206                             *w = r - tr, snapx = target;
 207                         break;
 208                     }
 209                 }
 210             }
 211
 212             if (snapy == NULL) {
 213                 /* vertical snapping */
 214                 if (l < tr && r > tl) {
 215                     switch (corn) {
 216                     case OB_CORNER_TOPLEFT:
 217                     case OB_CORNER_TOPRIGHT:
 218                         dlt = t;
 219                         drb = b + *h - c->frame->area.height;
 220                         if (b < tt && drb >= tt &&
 221                             drb < tt + config_resist_win)
 222                             *h = tt - t, snapy = target;
 223                         break;
 224                     case OB_CORNER_BOTTOMLEFT:
 225                     case OB_CORNER_BOTTOMRIGHT:
 226                         dlt = t - *h + c->frame->area.height;
 227                         drb = b;
 228                         if (t > tb && dlt <= tb &&
 229                             dlt > tb - config_resist_win)
 230                             *h = b - tb, snapy = target;
 231                         break;
 232                     }
 233                 }
 234             }
 235
 236             /* snapped both ways */
 237             if (snapx && snapy) break;
 238         }
 239     }
 240 }
 241
 242 void resist_size_monitors(ObClient *c, gint *w, gint *h, ObCorner corn)
 243 {
 244     gint l, t, r, b; /* my left, top, right and bottom sides */
 245     gint dlt, drb; /* my destination left/top and right/bottom sides */
 246     Rect *area;
 247     gint al, at, ar, ab; /* screen boundaries */
 248     gint incw, inch;
 249
 250     l = RECT_LEFT(c->frame->area);
 251     r = RECT_RIGHT(c->frame->area);
 252     t = RECT_TOP(c->frame->area);
 253     b = RECT_BOTTOM(c->frame->area);
 254
 255     incw = c->size_inc.width;
 256     inch = c->size_inc.height;
 257
 258     /* get the screen boundaries */
 259     area = screen_area(c->desktop);
 260     al = RECT_LEFT(*area);
 261     at = RECT_TOP(*area);
 262     ar = RECT_RIGHT(*area);
 263     ab = RECT_BOTTOM(*area);
 264
 265     if (config_resist_edge) {
 266         /* horizontal snapping */
 267         switch (corn) {
 268         case OB_CORNER_TOPLEFT:
 269         case OB_CORNER_BOTTOMLEFT:
 270             dlt = l;
 271             drb = r + *w - c->frame->area.width;
 272             if (r <= ar && drb > ar && drb <= ar + config_resist_edge)
 273                 *w = ar - l + 1;
 274             break;
 275         case OB_CORNER_TOPRIGHT:
 276         case OB_CORNER_BOTTOMRIGHT:
 277             dlt = l - *w + c->frame->area.width;
 278             drb = r;
 279             if (l >= al && dlt < al && dlt >= al - config_resist_edge)
 280                 *w = r - al + 1;
 281             break;
 282         }
 283
 284         /* vertical snapping */
 285         switch (corn) {
 286         case OB_CORNER_TOPLEFT:
 287         case OB_CORNER_TOPRIGHT:
 288             dlt = t;
 289             drb = b + *h - c->frame->area.height;
 290             if (b <= ab && drb > ab && drb <= ab + config_resist_edge)
 291                 *h = ab - t + 1;
 292             break;
 293         case OB_CORNER_BOTTOMLEFT:
 294         case OB_CORNER_BOTTOMRIGHT:
 295             dlt = t - *h + c->frame->area.height;
 296             drb = b;
 297             if (t >= at && dlt < at && dlt >= at - config_resist_edge)
 298                 *h = b - at + 1;
 299             break;
 300         }
 301     }
 302 }