dwm/client.c

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C
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/*
* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
#include <X11/Xatom.h>
#include "util.h"
#include "wm.h"
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void
arrange(void *aux)
{
Client *c;
int n, cols, rows, gw, gh, i, j;
float rt, fd;
if(!clients)
return;
for(n = 0, c = clients; c; c = c->next, n++);
rt = sqrt(n);
if(modff(rt, &fd) < 0.5)
rows = floor(rt);
else
rows = ceil(rt);
if(rows * rows < n)
cols = rows + 1;
else
cols = rows;
gw = (sw - 1) / cols;
gh = (sh - bh - 1) / rows;
for(i = j = 0, c = clients; c; c = c->next) {
c->x = i * gw;
c->y = j * gh + bh;
c->w = gw;
c->h = gh;
resize(c);
if(++i == cols) {
j++;
i = 0;
}
}
}
void
sel(void *aux)
{
const char *arg = aux;
Client *c = NULL;
if(!arg || !stack)
return;
if(!strncmp(arg, "next", 5))
c = stack->snext ? stack->snext : stack;
else if(!strncmp(arg, "prev", 5))
for(c = stack; c && c->snext; c = c->snext);
if(!c)
c = stack;
raise(c);
focus(c);
}
void
kill(void *aux)
{
Client *c = stack;
if(!c)
return;
if(c->proto & WM_PROTOCOL_DELWIN)
send_message(c->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
else
XKillClient(dpy, c->win);
}
static void
resize_title(Client *c)
{
c->tw = textw(&brush.font, c->name) + bh;
if(c->tw > c->w)
c->tw = c->w + 2;
c->tx = c->x + c->w - c->tw + 2;
c->ty = c->y;
XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
}
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void
update_name(Client *c)
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{
XTextProperty name;
int n;
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char **list = NULL;
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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)
return;
if(name.encoding == XA_STRING)
strncpy(c->name, (char *)name.value, sizeof(c->name));
else {
if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
&& n > 0 && *list)
{
strncpy(c->name, *list, sizeof(c->name));
XFreeStringList(list);
}
}
XFree(name.value);
resize_title(c);
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}
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void
update_size(Client *c)
{
XSizeHints size;
long msize;
if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
size.flags = PSize;
c->flags = size.flags;
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if(c->flags & PBaseSize) {
c->basew = size.base_width;
c->baseh = size.base_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
c->minw = c->minh = 0;
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}
void
raise(Client *c)
{
XRaiseWindow(dpy, c->win);
XRaiseWindow(dpy, c->title);
}
void
lower(Client *c)
{
XLowerWindow(dpy, c->title);
XLowerWindow(dpy, c->win);
}
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void
focus(Client *c)
{
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Client **l, *old;
old = stack;
for(l = &stack; *l && *l != c; l = &(*l)->snext);
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eassert(*l == c);
*l = c->snext;
c->snext = stack;
stack = c;
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if(old && old != c) {
XMapWindow(dpy, old->title);
draw_client(old);
}
XUnmapWindow(dpy, c->title);
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draw_client(c);
XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
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XFlush(dpy);
}
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void
manage(Window w, XWindowAttributes *wa)
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{
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Client *c, **l;
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XSetWindowAttributes twa;
c = emallocz(sizeof(Client));
c->win = w;
c->tx = c->x = wa->x;
c->ty = c->y = wa->y;
if(c->y < bh)
c->ty = c->y += bh;
c->tw = c->w = wa->width;
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c->h = wa->height;
c->th = bh;
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update_size(c);
XSetWindowBorderWidth(dpy, c->win, 1);
XSetWindowBorder(dpy, c->win, brush.border);
XSelectInput(dpy, c->win,
StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
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XGetTransientForHint(dpy, c->win, &c->trans);
twa.override_redirect = 1;
twa.background_pixmap = ParentRelative;
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twa.event_mask = ExposureMask;
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c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
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0, DefaultDepth(dpy, screen), CopyFromParent,
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DefaultVisual(dpy, screen),
CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
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update_name(c);
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for(l=&clients; *l; l=&(*l)->next);
c->next = *l; /* *l == nil */
*l = c;
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c->snext = stack;
stack = c;
XMapRaised(dpy, c->win);
XMapRaised(dpy, c->title);
XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
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GrabModeAsync, GrabModeSync, None, None);
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resize(c);
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focus(c);
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}
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void
resize(Client *c)
{
XConfigureEvent e;
resize_title(c);
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XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
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e.type = ConfigureNotify;
e.event = c->win;
e.window = c->win;
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e.x = c->x;
e.y = c->y;
e.width = c->w;
e.height = c->h;
e.border_width = 0;
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e.above = None;
e.override_redirect = False;
XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
XFlush(dpy);
}
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static int
dummy_error_handler(Display *dpy, XErrorEvent *error)
{
return 0;
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}
void
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unmanage(Client *c)
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{
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Client **l;
XGrabServer(dpy);
XSetErrorHandler(dummy_error_handler);
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XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
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XDestroyWindow(dpy, c->title);
for(l=&clients; *l && *l != c; l=&(*l)->next);
eassert(*l == c);
*l = c->next;
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for(l=&stack; *l && *l != c; l=&(*l)->snext);
eassert(*l == c);
*l = c->snext;
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free(c);
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XFlush(dpy);
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XSetErrorHandler(error_handler);
XUngrabServer(dpy);
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if(stack)
focus(stack);
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}
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Client *
gettitle(Window w)
{
Client *c;
for(c = clients; c; c = c->next)
if(c->title == w)
return c;
return NULL;
}
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Client *
getclient(Window w)
{
Client *c;
for(c = clients; c; c = c->next)
if(c->win == w)
return c;
return NULL;
}
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void
draw_client(Client *c)
{
if(c == stack) {
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draw_bar();
return;
}
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brush.x = brush.y = 0;
brush.w = c->tw;
brush.h = c->th;
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draw(dpy, &brush, True, c->name);
XCopyArea(dpy, brush.drawable, c->title, brush.gc,
0, 0, c->tw, c->th, 0, 0);
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XFlush(dpy);
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}