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changed shortcuts as described on the mailinglist, added sanity checks for ratios...
[dwm.git] / client.c
diff --git a/client.c b/client.c
index d5bc30e..d4dfe6e 100644 (file)
--- a/client.c
+++ b/client.c
@@ -1,18 +1,22 @@
-/*
- * (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 <X11/Xutil.h>
 
 #include "dwm.h"
 #include <stdlib.h>
 #include <string.h>
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
-/* static functions */
+/* static */
+
+static void
+attachstack(Client *c) {
+       c->snext = stack;
+       stack = c;
+}
 
 static void
 detachstack(Client *c) {
        Client **tc;
 
 static void
 detachstack(Client *c) {
        Client **tc;
+
        for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
        *tc = c->snext;
 }
        for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
        *tc = c->snext;
 }
@@ -54,17 +58,27 @@ grabbuttons(Client *c, Bool focused) {
                                GrabModeAsync, GrabModeSync, None, None);
 }
 
                                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
 static void
-resizetitle(Client *c) {
-       c->tw = textw(c->name);
-       if(c->tw > c->w)
-               c->tw = c->w + 2;
-       c->tx = c->x + c->w - c->tw + 2;
-       c->ty = c->y;
-       if(isvisible(c))
-               XMoveResizeWindow(dpy, c->twin, c->tx, c->ty, c->tw, c->th);
-       else
-               XMoveResizeWindow(dpy, c->twin, c->tx + 2 * sw, c->ty, c->tw, c->th);
+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
 }
 
 static int
@@ -72,238 +86,262 @@ xerrordummy(Display *dsply, XErrorEvent *ee) {
        return 0;
 }
 
        return 0;
 }
 
-/* extern functions */
+/* extern */
 
 void
 
 void
-ban(Client *c) {
-       XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-       XMoveWindow(dpy, c->twin, c->tx + 2 * sw, c->ty);
+attach(Client *c) {
+       if(clients)
+               clients->prev = c;
+       c->next = clients;
+       clients = c;
 }
 
 void
 }
 
 void
-focus(Client *c) {
-       Client *old;
-
-       if(!issel || (c && !isvisible(c)))
+ban(Client *c) {
+       if(c->isbanned)
                return;
                return;
-       if(!sel)
-               sel = c;
-       else if(sel != c) {
-               old = sel;
-               sel = c;
-               if(old) {
-                       grabbuttons(old, False);
-                       drawtitle(old);
-               }
-       }
-       if(c) {
-               detachstack(c);
-               c->snext = stack;
-               stack = c;
-               grabbuttons(c, True);
-               drawtitle(c);
-               XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
-       }
-       else
-               XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+       XUnmapWindow(dpy, c->win);
+       setclientstate(c, IconicState);
+       c->isbanned = True;
+       c->unmapped++;
 }
 
 }
 
-Client *
-getclient(Window w) {
-       Client *c;
-
-       for(c = clients; c; c = c->next)
-               if(c->win == w)
-                       return c;
-       return NULL;
+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);
 }
 
 }
 
-Client *
-getctitle(Window w) {
-       Client *c;
-
-       for(c = clients; c; c = c->next)
-               if(c->twin == w)
-                       return c;
-       return NULL;
+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
 }
 
 void
-gravitate(Client *c, Bool invert) {
-       int dx = 0, dy = 0;
-
-       switch(c->grav) {
-       default:
-               break;
-       case StaticGravity:
-       case NorthWestGravity:
-       case NorthGravity:
-       case NorthEastGravity:
-               dy = c->border;
-               break;
-       case EastGravity:
-       case CenterGravity:
-       case WestGravity:
-               dy = -(c->h / 2) + c->border;
-               break;
-       case SouthEastGravity:
-       case SouthGravity:
-       case SouthWestGravity:
-               dy = -(c->h);
-               break;
+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]);
        }
        }
-
-       switch (c->grav) {
-       default:
-               break;
-       case StaticGravity:
-       case NorthWestGravity:
-       case WestGravity:
-       case SouthWestGravity:
-               dx = c->border;
-               break;
-       case NorthGravity:
-       case CenterGravity:
-       case SouthGravity:
-               dx = -(c->w / 2) + c->border;
-               break;
-       case NorthEastGravity:
-       case EastGravity:
-       case SouthEastGravity:
-               dx = -(c->w + c->border);
-               break;
+       if(c) {
+               detachstack(c);
+               attachstack(c);
+               grabbuttons(c, True);
        }
        }
-
-       if(invert) {
-               dx = -dx;
-               dy = -dy;
+       sel = c;
+       drawstatus();
+       if(!selscreen)
+               return;
+       if(c) {
+               XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
+               XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
        }
        }
-       c->x += dx;
-       c->y += dy;
+       else
+               XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 }
 
 void
 }
 
 void
-killclient(Arg *arg) {
+killclient(const char *arg) {
+       XEvent ev;
+
        if(!sel)
                return;
        if(!sel)
                return;
-       if(sel->proto & PROTODELWIN)
-               sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
+       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);
 }
 
 void
 manage(Window w, XWindowAttributes *wa) {
        else
                XKillClient(dpy, sel->win);
 }
 
 void
 manage(Window w, XWindowAttributes *wa) {
-       Client *c;
+       Client *c, *t = NULL;
        Window trans;
        Window trans;
-       XSetWindowAttributes twa;
+       Status rettrans;
+       XWindowChanges wc;
 
        c = emallocz(sizeof(Client));
        c->tags = emallocz(ntags * sizeof(Bool));
        c->win = w;
 
        c = emallocz(sizeof(Client));
        c->tags = emallocz(ntags * sizeof(Bool));
        c->win = w;
-       c->x = c->tx = wa->x;
-       c->y = c->ty = wa->y;
-       c->w = c->tw = wa->width;
+       c->x = wa->x;
+       c->y = wa->y;
+       c->w = wa->width;
        c->h = wa->height;
        c->h = wa->height;
-       c->th = bh;
-
-       c->border = 0;
-       updatesize(c);
-
-       if(c->x + c->w + 2 > sw)
-               c->x = sw - c->w - 2;
-       if(c->x < 0)
-               c->x = 0;
-       if(c->y + c->h + 2 > sh)
-               c->y = sh - c->h - 2;
-       if(c->h != sh && c->y < bh)
-               c->y = bh;
-
-       c->proto = getproto(c->win);
-       XSelectInput(dpy, c->win,
+       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);
                StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
-       XGetTransientForHint(dpy, c->win, &trans);
-       twa.override_redirect = 1;
-       twa.background_pixmap = ParentRelative;
-       twa.event_mask = ExposureMask | EnterWindowMask;
-
-       c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
-                       0, DefaultDepth(dpy, screen), CopyFromParent,
-                       DefaultVisual(dpy, screen),
-                       CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
-
        grabbuttons(c, False);
        grabbuttons(c, False);
-       settags(c, getclient(trans));
-       if(!c->isfloat)
-               c->isfloat = trans
-                       || (c->maxw && c->minw &&
-                               c->maxw == c->minw && c->maxh == c->minh);
-
-       if(clients)
-               clients->prev = c;
-       c->next = clients;
-       c->snext = stack;
-       stack = clients = c;
-
        updatetitle(c);
        updatetitle(c);
-       ban(c);
-       XMapWindow(dpy, c->win);
-       XMapWindow(dpy, c->twin);
-       if(isvisible(c))
-               focus(c);
-       arrange(NULL);
+       if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
+               for(t = clients; t && t->win != trans; t = t->next);
+       settags(c, t);
+       if(!c->isfloating)
+               c->isfloating = (rettrans == Success) || c->isfixed;
+       attach(c);
+       attachstack(c);
+       XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
+       setclientstate(c, IconicState);
+       c->isbanned = True;
+       focus(c);
+       lt->arrange();
 }
 
 void
 }
 
 void
-resize(Client *c, Bool sizehints, Corner sticky) {
-       int bottom = c->y + c->h;
-       int right = c->x + c->w;
+resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
+       float dx, dy, max, min, ratio;
        XWindowChanges wc;
 
        XWindowChanges wc;
 
+       if(w <= 0 || h <= 0)
+               return;
        if(sizehints) {
        if(sizehints) {
+               if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
+                       dx = (float)(w - c->basew);
+                       dy = (float)(h - c->baseh);
+                       min = (float)(c->minax) / (float)(c->minay);
+                       max = (float)(c->maxax) / (float)(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)
                if(c->incw)
-                       c->w -= (c->w - c->basew) % c->incw;
+                       w -= (w - c->basew) % c->incw;
                if(c->inch)
                if(c->inch)
-                       c->h -= (c->h - c->baseh) % c->inch;
-               if(c->minw && c->w < c->minw)
-                       c->w = c->minw;
-               if(c->minh && c->h < c->minh)
-                       c->h = c->minh;
-               if(c->maxw && c->w > c->maxw)
-                       c->w = c->maxw;
-               if(c->maxh && c->h > c->maxh)
-                       c->h = c->maxh;
+                       h -= (h - c->baseh) % c->inch;
        }
        }
-       if(sticky == TopRight || sticky == BotRight)
-               c->x = right - c->w;
-       if(sticky == BotLeft || sticky == BotRight)
-               c->y = bottom - c->h;
-
+       if(w <= 0 || h <= 0)
+               return;
        /* offscreen appearance fixes */
        /* offscreen appearance fixes */
-       if(c->x + c->w < 0)
-               c->x = 0;
-       if(c->y + c->h < bh)
-               c->y = bh;
-       if(c->x > sw)
-               c->x = sw - c->w;
-       if(c->y > sh)
-               c->y = sh - c->h;
-
-       resizetitle(c);
-       wc.x = c->x;
-       wc.y = c->y;
-       wc.width = c->w;
-       wc.height = c->h;
-       if(c->w == sw && c->h == sh)
-               wc.border_width = 0;
-       else
-               wc.border_width = 1;
-       XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
+       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
+togglefloating(const char *arg) {
+       if(!sel || lt->arrange == floating)
+               return;
+       sel->isfloating = !sel->isfloating;
+       if(sel->isfloating)
+               resize(sel, sel->x, sel->y, sel->w, sel->h, True);
+       lt->arrange();
+}
+
+void
+unban(Client *c) {
+       if(!c->isbanned)
+               return;
+       XMapWindow(dpy, c->win);
+       setclientstate(c, NormalState);
+       c->isbanned = False;
+}
+
+void
+unmanage(Client *c) {
+       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, WithdrawnState);
+       free(c->tags);
+       free(c);
        XSync(dpy, False);
        XSync(dpy, False);
+       XSetErrorHandler(xerror);
+       XUngrabServer(dpy);
+       lt->arrange();
 }
 
 void
 }
 
 void
-updatesize(Client *c) {
+updatesizehints(Client *c) {
        long msize;
        XSizeHints size;
 
        long msize;
        XSizeHints size;
 
@@ -314,6 +352,10 @@ updatesize(Client *c) {
                c->basew = size.base_width;
                c->baseh = size.base_height;
        }
                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) {
        else
                c->basew = c->baseh = 0;
        if(c->flags & PResizeInc) {
@@ -332,12 +374,22 @@ updatesize(Client *c) {
                c->minw = size.min_width;
                c->minh = size.min_height;
        }
                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;
        else
                c->minw = c->minh = 0;
-       if(c->flags & PWinGravity)
-               c->grav = size.win_gravity;
+       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
        else
-               c->grav = NorthWestGravity;
+               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
@@ -354,42 +406,15 @@ updatetitle(Client *c) {
        if(!name.nitems)
                return;
        if(name.encoding == XA_STRING)
        if(!name.nitems)
                return;
        if(name.encoding == XA_STRING)
-               strncpy(c->name, (char *)name.value, sizeof(c->name));
+               strncpy(c->name, (char *)name.value, sizeof c->name - 1);
        else {
                if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
        else {
                if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
-                               && n > 0 && *list)
+               && n > 0 && *list)
                {
                {
-                       strncpy(c->name, *list, sizeof(c->name));
+                       strncpy(c->name, *list, sizeof c->name - 1);
                        XFreeStringList(list);
                }
        }
                        XFreeStringList(list);
                }
        }
+       c->name[sizeof c->name - 1] = '\0';
        XFree(name.value);
        XFree(name.value);
-       resizetitle(c);
-}
-
-void
-unmanage(Client *c) {
-       Client *nc;
-
-       /* The server grab construct avoids race conditions. */
-       XGrabServer(dpy);
-       XSetErrorHandler(xerrordummy);
-
-       detach(c);
-       detachstack(c);
-       if(sel == c) {
-               for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
-               focus(nc);
-       }
-
-       XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
-       XDestroyWindow(dpy, c->twin);
-
-       free(c->tags);
-       free(c);
-
-       XSync(dpy, False);
-       XSetErrorHandler(xerror);
-       XUngrabServer(dpy);
-       arrange(NULL);
 }
 }