+
+ /* check if window has set a property */
+ name.nitems = 0;
+ XGetTextProperty(dpy, c->win, &name, dwmprops);
+ if(name.nitems && name.encoding == XA_STRING) {
+ strncpy(prop, (char *)name.value, sizeof prop - 1);
+ prop[sizeof prop - 1] = '\0';
+ XFree(name.value);
+ for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)
+ if((c->tags[i] = prop[i] == '1'))
+ result = True;
+ if(i < sizeof prop - 1 && prop[i] != '\0')
+ c->isfloating = prop[i] == '1';
+ }
+ return result;
+}
+
+void
+manage(Window w, XWindowAttributes *wa) {
+ unsigned int i;
+ Client *c, *t = NULL;
+ Window trans;
+ Status rettrans;
+ XWindowChanges wc;
+
+ c = emallocz(sizeof(Client));
+ c->tags = emallocz(ntags * sizeof(Bool));
+ c->win = w;
+ c->x = wa->x;
+ c->y = wa->y;
+ c->w = wa->width;
+ c->h = wa->height;
+ c->oldborder = wa->border_width;
+ if(c->w == sw && c->h == sh) {
+ c->x = sx;
+ c->y = sy;
+ c->border = wa->border_width;
+ }
+ else {
+ if(c->x + c->w + 2 * c->border > wax + waw)
+ c->x = wax + waw - c->w - 2 * c->border;
+ if(c->y + c->h + 2 * c->border > way + wah)
+ c->y = way + wah - c->h - 2 * c->border;
+ if(c->x < wax)
+ c->x = wax;
+ if(c->y < way)
+ c->y = way;
+ c->border = BORDERPX;
+ }
+ wc.border_width = c->border;
+ XConfigureWindow(dpy, w, CWBorderWidth, &wc);
+ XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
+ configure(c); /* propagates border_width, if size doesn't change */
+ updatesizehints(c);
+ XSelectInput(dpy, w,
+ StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
+ grabbuttons(c, False);
+ updatetitle(c);
+ if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
+ for(t = clients; t && t->win != trans; t = t->next);
+ if(t)
+ for(i = 0; i < ntags; i++)
+ c->tags[i] = t->tags[i];
+ if(!loadprops(c))
+ applyrules(c);
+ if(!c->isfloating)
+ c->isfloating = (rettrans == Success) || c->isfixed;
+ saveprops(c);
+ attach(c);
+ attachstack(c);
+ XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
+ ban(c);
+ arrange();
+}
+
+void
+resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
+ double dx, dy, max, min, ratio;
+ XWindowChanges wc;
+
+ if(sizehints) {
+ if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0 && (w - c->basew) > 0) {
+ dx = (double)(w - c->basew);
+ dy = (double)(h - c->baseh);
+ min = (double)(c->minax) / (double)(c->minay);
+ max = (double)(c->maxax) / (double)(c->maxay);
+ ratio = dx / dy;
+ if(max > 0 && min > 0 && ratio > 0) {
+ if(ratio < min) {
+ dy = (dx * min + dy) / (min * min + 1);
+ dx = dy * min;
+ w = (int)dx + c->basew;
+ h = (int)dy + c->baseh;
+ }
+ else if(ratio > max) {
+ dy = (dx * min + dy) / (max * max + 1);
+ dx = dy * min;
+ w = (int)dx + c->basew;
+ h = (int)dy + c->baseh;
+ }
+ }
+ }
+ if(c->minw && w < c->minw)
+ w = c->minw;
+ if(c->minh && h < c->minh)
+ h = c->minh;
+ if(c->maxw && w > c->maxw)
+ w = c->maxw;
+ if(c->maxh && h > c->maxh)
+ h = c->maxh;
+ if(c->incw)
+ w -= (w - c->basew) % c->incw;
+ if(c->inch)
+ h -= (h - c->baseh) % c->inch;
+ }
+ if(w <= 0 || h <= 0)
+ return;
+ /* offscreen appearance fixes */
+ if(x > sw)
+ x = sw - w - 2 * c->border;
+ if(y > sh)
+ y = sh - h - 2 * c->border;
+ if(x + w + 2 * c->border < sx)
+ x = sx;
+ if(y + h + 2 * c->border < sy)
+ y = sy;
+ if(c->x != x || c->y != y || c->w != w || c->h != h) {
+ c->x = wc.x = x;
+ c->y = wc.y = y;
+ c->w = wc.width = w;
+ c->h = wc.height = h;
+ wc.border_width = c->border;
+ XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
+ configure(c);
+ XSync(dpy, False);
+ }
+}
+
+void
+saveprops(Client *c) {
+ unsigned int i;
+
+ for(i = 0; i < ntags && i < sizeof prop - 1; i++)
+ prop[i] = c->tags[i] ? '1' : '0';
+ if(i < sizeof prop - 1)
+ prop[i++] = c->isfloating ? '1' : '0';
+ prop[i] = '\0';
+ XChangeProperty(dpy, c->win, dwmprops, XA_STRING, 8,
+ PropModeReplace, (unsigned char *)prop, i);
+}
+
+void
+unban(Client *c) {
+ if(!c->isbanned)
+ return;
+ XMapWindow(dpy, c->win);
+ setclientstate(c, NormalState);
+ c->isbanned = False;
+}
+
+void
+unmanage(Client *c, long state) {
+ XWindowChanges wc;
+
+ wc.border_width = c->oldborder;
+ /* The server grab construct avoids race conditions. */
+ XGrabServer(dpy);
+ XSetErrorHandler(xerrordummy);
+ XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
+ detach(c);
+ detachstack(c);
+ if(sel == c)
+ focus(NULL);
+ XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+ setclientstate(c, state);
+ free(c->tags);
+ free(c);
+ XSync(dpy, False);
+ XSetErrorHandler(xerror);
+ XUngrabServer(dpy);
+ if(state != NormalState)
+ arrange();
+}
+
+void
+updatesizehints(Client *c) {
+ long msize;
+ XSizeHints size;
+
+ if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
+ size.flags = PSize;
+ c->flags = size.flags;
+ if(c->flags & PBaseSize) {
+ c->basew = size.base_width;
+ c->baseh = size.base_height;
+ }
+ else if(c->flags & PMinSize) {
+ c->basew = size.min_width;
+ c->baseh = size.min_height;
+ }
+ else
+ c->basew = c->baseh = 0;
+ if(c->flags & PResizeInc) {
+ c->incw = size.width_inc;
+ c->inch = size.height_inc;
+ }
+ else
+ c->incw = c->inch = 0;
+ if(c->flags & PMaxSize) {
+ c->maxw = size.max_width;
+ c->maxh = size.max_height;
+ }
+ else
+ c->maxw = c->maxh = 0;
+ if(c->flags & PMinSize) {
+ c->minw = size.min_width;
+ c->minh = size.min_height;
+ }
+ else if(c->flags & PBaseSize) {
+ c->minw = size.base_width;
+ c->minh = size.base_height;
+ }
+ else
+ c->minw = c->minh = 0;
+ if(c->flags & PAspect) {
+ c->minax = size.min_aspect.x;
+ c->maxax = size.max_aspect.x;
+ c->minay = size.min_aspect.y;
+ c->maxay = size.max_aspect.y;
+ }
+ else
+ c->minax = c->maxax = c->minay = c->maxay = 0;
+ c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
+ && c->maxw == c->minw && c->maxh == c->minh);
+}
+
+void
+updatetitle(Client *c) {
+ char **list = NULL;