fixed misappearance of iconified windows on SIGKILL

[dwm.git] / client.c

diff --git a/client.c b/client.c
index 62f4d98..9f46a0e 100644 (file)
--- a/client.c
+++ b/client.c
@@ -1,97 +1,422 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
+/* See LICENSE file for copyright and license details. */
+#include "dwm.h"
+#include <stdlib.h>

 #include <string.h>
 #include <X11/Xatom.h>
 #include <string.h>
 #include <X11/Xatom.h>

+#include <X11/Xutil.h>
+
+/* static */
+
+static char prop[128];
+
+static void
+attachstack(Client *c) {
+       c->snext = stack;
+       stack = c;
+}

 
 

-#include "util.h"
-#include "wm.h"
+static void
+detachstack(Client *c) {
+       Client **tc;
+
+       for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
+       *tc = c->snext;
+}

 
 static void
 
 static void

-update_client_name(Client *c)
-{
-       XTextProperty name;
-       int n;
-       char **list = NULL;
-
-       name.nitems = 0;
-       c->name[0] = 0;
-       XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
-       if(!name.nitems)
-               XGetWMName(dpy, c->win, &name);
-       if(!name.nitems)
+grabbuttons(Client *c, Bool focused) {
+       XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+
+       if(focused) {
+               XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+
+               XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+
+               XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+               XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+       }
+       else
+               XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
+                               GrabModeAsync, GrabModeSync, None, None);
+}
+
+static Bool
+isprotodel(Client *c) {
+       int i, n;
+       Atom *protocols;
+       Bool ret = False;
+
+       if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
+               for(i = 0; !ret && i < n; i++)
+                       if(protocols[i] == wmatom[WMDelete])
+                               ret = True;
+               XFree(protocols);
+       }
+       return ret;
+}
+
+static void
+setclientstate(Client *c, long state) {
+       long data[] = {state, None};
+
+       XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
+                       PropModeReplace, (unsigned char *)data, 2);
+}
+
+static int
+xerrordummy(Display *dsply, XErrorEvent *ee) {
+       return 0;
+}
+
+/* extern */
+
+void
+attach(Client *c) {
+       if(clients)
+               clients->prev = c;
+       c->next = clients;
+       clients = c;
+}
+
+void
+ban(Client *c) {
+       if(c->isbanned)
+               return;
+       XUnmapWindow(dpy, c->win);
+       setclientstate(c, IconicState);
+       c->isbanned = True;
+       c->unmapped++;
+}
+
+void
+configure(Client *c) {
+       XConfigureEvent ce;
+
+       ce.type = ConfigureNotify;
+       ce.display = dpy;
+       ce.event = c->win;
+       ce.window = c->win;
+       ce.x = c->x;
+       ce.y = c->y;
+       ce.width = c->w;
+       ce.height = c->h;
+       ce.border_width = c->border;
+       ce.above = None;
+       ce.override_redirect = False;
+       XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
+}
+
+void
+detach(Client *c) {
+       if(c->prev)
+               c->prev->next = c->next;
+       if(c->next)
+               c->next->prev = c->prev;
+       if(c == clients)
+               clients = c->next;
+       c->next = c->prev = NULL;
+}
+
+void
+focus(Client *c) {
+       if((!c && selscreen) || (c && !isvisible(c)))
+               for(c = stack; c && !isvisible(c); c = c->snext);
+       if(sel && sel != c) {
+               grabbuttons(sel, False);
+               XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
+       }
+       if(c) {
+               detachstack(c);
+               attachstack(c);
+               grabbuttons(c, True);
+       }
+       sel = c;
+       drawstatus();
+       if(!selscreen)
+               return;
+       if(c) {
+               XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
+               XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
+       }
+       else
+               XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+}
+
+void
+killclient(const char *arg) {
+       XEvent ev;
+
+       if(!sel)

                return;
                return;

-       if(name.encoding == XA_STRING)
-               strncpy(c->name, (char *)name.value, sizeof(c->name));
+       if(isprotodel(sel)) {
+               ev.type = ClientMessage;
+               ev.xclient.window = sel->win;
+               ev.xclient.message_type = wmatom[WMProtocols];
+               ev.xclient.format = 32;
+               ev.xclient.data.l[0] = wmatom[WMDelete];
+               ev.xclient.data.l[1] = CurrentTime;
+               XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
+       }
+       else
+               XKillClient(dpy, sel->win);
+}
+
+Bool
+getprops(Client *c) {
+       unsigned int i;
+       Bool result = False;
+
+       if(gettextprop(c->win, dwmprops, prop, sizeof prop)) {
+               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 {
        else {

-               if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
-                               && n > 0 && *list)
-               {
-                       strncpy(c->name, *list, sizeof(c->name));
-                       XFreeStringList(list);
+               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(!getprops(c))
+               applyrules(c);
+       if(!c->isfloating)
+               c->isfloating = (rettrans == Success) || c->isfixed;
+       setprops(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);

        }
        }

-       XFree(name.value);

 }
 
 }
 

-Client *
-create_client(Window w, XWindowAttributes *wa)
-{
-       Client *c;
-       XSetWindowAttributes twa;
+void
+setprops(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;
        long msize;

+       XSizeHints size;

 
 

-       c = emallocz(sizeof(Client));
-       c->win = w;
-       c->r[RFloat].x = wa->x;
-       c->r[RFloat].y = wa->y;
-       c->r[RFloat].width = wa->width;
-       c->r[RFloat].height = wa->height;
-       c->border = wa->border_width;
-       XSetWindowBorderWidth(dpy, c->win, 0);
-       XGetTransientForHint(dpy, c->win, &c->trans);
-       if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize) || !c->size.flags)
-               c->size.flags = PSize;
-       c->fixedsize =
-               (c->size.flags & PMinSize && c->size.flags & PMaxSize
-                && c->size.min_width == c->size.max_width
-                && c->size.min_height == c->size.max_height);
-       update_client_name(c);
-       twa.override_redirect = 1;
-       twa.background_pixmap = ParentRelative;
-       twa.event_mask = ExposureMask;
-
-       c->title = XCreateWindow(dpy, root, c->r[RFloat].x, c->r[RFloat].y,
-                       c->r[RFloat].width, barrect.height, 0,
-                       DefaultDepth(dpy, screen), CopyFromParent,
-                       DefaultVisual(dpy, screen),
-                       CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
-       XFlush(dpy);
-
-#if 0
-       for(t=&client, i=0; *t; t=&(*t)->next, i++);
-       c->next = *t; /* *t == nil */
-       *t = c;
-#endif
-       return c;
+       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
 }
 
 void

-manage(Client *c)
-{
-       XMapRaised(dpy, c->win);
-       XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
-       XFlush(dpy);
-}
-
-Client *
-getclient(Window w)
-{
-       Client *c;
-       for(c = clients; c; c = c->next)
-               if(c->win == w)
-                       return c;
-       return NULL;
+updatetitle(Client *c) {
+       if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
+               gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);

 }
 }