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awesome/client.c

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/*
* client.c - client management
*
* Copyright © 2007 Julien Danjou <julien@danjou.info>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <stdio.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/extensions/shape.h>
#include "screen.h"
#include "awesome.h"
#include "layout.h"
#include "tag.h"
#include "layouts/floating.h"
/* extern */
extern Client *clients, *sel, *stack; /* global client list and stack */
/** Attach client stack to clients stacks
* \param c the client
*/
static inline void
attachstack(Client * c)
{
c->snext = stack;
stack = c;
}
/** Detach client from stack
* \param c the client
*/
static inline void
detachstack(Client * c)
{
Client **tc;
for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
*tc = c->snext;
}
/** Grab or ungrab buttons when a client is focused
* \param c client
* \param focused True if client is focused
* \param modkey Mod key mask
* \param numlockmask Numlock mask
*/
static void
grabbuttons(Client * c, Bool focused, KeySym modkey, unsigned int numlockmask)
{
XUngrabButton(c->display, AnyButton, AnyModifier, c->win);
if(focused)
{
XGrabButton(c->display, Button1, modkey, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button1, modkey | LockMask, c->win, False,
BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button1, modkey | numlockmask, c->win, False,
BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button1, modkey | numlockmask | LockMask,
c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button2, modkey, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button2, modkey | LockMask, c->win, False,
BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button2, modkey | numlockmask, c->win, False,
BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button2, modkey | numlockmask | LockMask,
c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button3, modkey, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button3, modkey | LockMask, c->win, False,
BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button3, modkey | numlockmask, c->win, False,
BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button3, modkey | numlockmask | LockMask,
c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
XUngrabButton(c->display, AnyButton, AnyModifier, DefaultRootWindow(c->display));
}
else
{
XGrabButton(c->display, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button4, NoSymbol, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button4, LockMask, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button4, numlockmask, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button4, numlockmask | LockMask, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button5, NoSymbol, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button5, LockMask, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button5, numlockmask, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(c->display, Button5, numlockmask | LockMask, DefaultRootWindow(c->display), False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
}
}
/** Check if client supports protocol WM_DELETE_WINDOW
* \param c the client
* \return True if client has WM_DELETE_WINDOW
*/
static Bool
isprotodel(Client * c)
{
int i, n;
Atom *protocols;
Bool ret = False;
if(XGetWMProtocols(c->display, c->win, &protocols, &n))
{
for(i = 0; !ret && i < n; i++)
if(protocols[i] == XInternAtom(c->display, "WM_DELETE_WINDOW", False))
ret = True;
XFree(protocols);
}
return ret;
}
/** Set client WM_STATE property
* \param c the client
* \param state no idea
*/
static void
setclientstate(Client * c, long state)
{
long data[] = { state, None };
XChangeProperty(c->display, c->win, XInternAtom(c->display, "WM_STATE", False),
XInternAtom(c->display, "WM_STATE", False), 32,
PropModeReplace, (unsigned char *) data, 2);
}
/** Set client transparency using composite
* \param c client
* \param opacity opacity percentage
*/
static void
setclienttrans(Client *c, double opacity)
{
unsigned int real_opacity = 0xffffffff;
if(opacity >= 0 && opacity <= 100)
{
real_opacity = ((opacity / 100.0) * 0xffffffff);
XChangeProperty(c->display, c->win,
XInternAtom(c->display, "_NET_WM_WINDOW_OPACITY", False),
XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &real_opacity, 1L);
}
else
XDeleteProperty(c->display, c->win, XInternAtom(c->display, "_NET_WM_WINDOW_OPACITY", False));
XSync(c->display, False);
}
/** Attach client to the beginning of the clients stack
* \param c the client
*/
inline void
attach(Client * c)
{
if(clients)
clients->prev = c;
c->next = clients;
clients = c;
}
inline void
updatetitle(Client * c)
{
if(!xgettextprop(c->display, c->win, XInternAtom(c->display, "_NET_WM_NAME", False), c->name, sizeof c->name))
xgettextprop(c->display, c->win, XInternAtom(c->display, "WM_NAME", False), c->name, sizeof c->name);
}
/** Ban client
* \param c the client
*/
void
ban(Client * c)
{
if(c->isbanned)
return;
XUnmapWindow(c->display, c->win);
setclientstate(c, IconicState);
c->isbanned = True;
c->unmapped++;
}
/** Configure client
* \param c the client
*/
void
configure(Client * c)
{
XConfigureEvent ce;
ce.type = ConfigureNotify;
ce.display = c->display;
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(c->display, 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;
}
/** Give focus to client, or to first client if c is NULL
* \param disp Display ref
* \param drawcontext drawcontext ref
* \param c client
* \param selscreen True if current screen is selected
* \param awesomeconf awesome config
*/
void
focus(Display *disp, DC *drawcontext, Client * c, Bool selscreen, awesome_config *awesomeconf)
{
/* if c is NULL or invisible, take next client in the stack */
if((!c && selscreen) || (c && !isvisible(c, awesomeconf->selected_tags, awesomeconf->ntags)))
for(c = stack; c && !isvisible(c, awesomeconf->selected_tags, awesomeconf->ntags); c = c->snext);
/* if a client was selected but it's not the current client, unfocus it */
if(sel && sel != c)
{
grabbuttons(sel, False, awesomeconf->modkey, awesomeconf->numlockmask);
XSetWindowBorder(sel->display, sel->win, drawcontext->norm[ColBorder]);
setclienttrans(sel, awesomeconf->opacity_unfocused);
}
if(c)
{
detachstack(c);
attachstack(c);
grabbuttons(c, True, awesomeconf->modkey, awesomeconf->numlockmask);
}
if(!selscreen)
return;
sel = c;
drawstatusbar(disp, drawcontext, awesomeconf);
if(sel)
{
XSetWindowBorder(sel->display, sel->win, drawcontext->sel[ColBorder]);
XSetInputFocus(sel->display, sel->win, RevertToPointerRoot, CurrentTime);
for(c = stack; c; c = c->snext)
if(c != sel)
setclienttrans(c, awesomeconf->opacity_unfocused);
setclienttrans(sel, -1);
}
else
XSetInputFocus(disp, DefaultRootWindow(disp), RevertToPointerRoot, CurrentTime);
}
/** Kill selected client
* \param disp Display ref
* \param awesomeconf awesome config
* \param arg unused
* \ingroup ui_callback
*/
void
uicb_killclient(Display *disp __attribute__ ((unused)),
DC *drawcontext __attribute__ ((unused)),
awesome_config *awesomeconf __attribute__ ((unused)),
const char *arg __attribute__ ((unused)))
{
XEvent ev;
if(!sel)
return;
if(isprotodel(sel))
{
ev.type = ClientMessage;
ev.xclient.window = sel->win;
ev.xclient.message_type = XInternAtom(disp, "WM_PROTOCOLS", False);
ev.xclient.format = 32;
ev.xclient.data.l[0] = XInternAtom(disp, "WM_DELETE_WINDOW", False);
ev.xclient.data.l[1] = CurrentTime;
XSendEvent(sel->display, sel->win, False, NoEventMask, &ev);
}
else
XKillClient(sel->display, sel->win);
}
static Bool
loadprops(Client * c, int ntags)
{
int i;
char *prop;
Bool result = False;
prop = p_new(char, ntags + 2);
if(xgettextprop(c->display, c->win, AWESOMEPROPS_ATOM(c->display), prop, ntags + 2))
{
for(i = 0; i < ntags && prop[i]; i++)
if((c->tags[i] = prop[i] == '1'))
result = True;
if(i <= ntags && prop[i])
c->isfloating = prop[i] == '1';
}
p_delete(&prop);
return result;
}
void
manage(Display * disp, DC *drawcontext, Window w, XWindowAttributes * wa, awesome_config *awesomeconf)
{
int i;
Client *c, *t = NULL;
Window trans;
Status rettrans;
XWindowChanges wc;
c = p_new(Client, 1);
c->tags = p_new(Bool, awesomeconf->ntags);
c->win = w;
c->ftview = True;
c->x = c->rw = wa->x;
c->y = c->ry = wa->y;
c->w = c->rw = wa->width;
c->h = c->rh = wa->height;
c->oldborder = wa->border_width;
c->display = disp;
if(c->w == DisplayWidth(disp, DefaultScreen(disp))
&& c->h == DisplayHeight(disp, DefaultScreen(disp)))
{
c->x = 0;
c->y = 0;
c->border = wa->border_width;
}
else
{
ScreenInfo *si = get_display_info(disp, awesomeconf->statusbar);
if(c->x + c->w + 2 * c->border > si->x_org + si->width)
c->x = c->rx = si->x_org + si->width - c->w - 2 * c->border;
if(c->y + c->h + 2 * c->border > si->y_org + si->height)
c->y = c->ry = si->y_org + si->height - c->h - 2 * c->border;
if(c->x < si->x_org)
c->x = c->rx = si->x_org;
if(c->y < si->y_org)
c->y = c->ry = si->y_org;
c->border = awesomeconf->borderpx;
XFree(si);
}
wc.border_width = c->border;
XConfigureWindow(disp, w, CWBorderWidth, &wc);
XSetWindowBorder(disp, w, drawcontext->norm[ColBorder]);
configure(c); /* propagates border_width, if size doesn't change */
updatesizehints(c);
XSelectInput(disp, w, StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
if(awesomeconf->have_shape)
{
XShapeSelectInput(disp, w, ShapeNotifyMask);
set_shape(c);
}
grabbuttons(c, False, awesomeconf->modkey, awesomeconf->numlockmask);
updatetitle(c);
if((rettrans = XGetTransientForHint(disp, w, &trans) == Success))
for(t = clients; t && t->win != trans; t = t->next);
if(t)
for(i = 0; i < awesomeconf->ntags; i++)
c->tags[i] = t->tags[i];
if(!loadprops(c, awesomeconf->ntags))
applyrules(c, awesomeconf);
if(!c->isfloating)
c->isfloating = (rettrans == Success) || c->isfixed;
saveprops(c, awesomeconf->ntags);
attach(c);
attachstack(c);
XMoveResizeWindow(disp, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
ban(c);
arrange(disp, drawcontext, awesomeconf);
}
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 > DisplayWidth(c->display, DefaultScreen(c->display)))
x = DisplayWidth(c->display, DefaultScreen(c->display)) - w - 2 * c->border;
if(y > DisplayHeight(c->display, DefaultScreen(c->display)))
y = DisplayHeight(c->display, DefaultScreen(c->display)) - h - 2 * c->border;
if(x + w + 2 * c->border < 0)
x = 0;
if(y + h + 2 * c->border < 0)
y = 0;
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(c->display, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
configure(c);
XSync(c->display, False);
}
}
void
uicb_moveresize(Display *disp __attribute__ ((unused)),
DC *drawcontext __attribute__ ((unused)),
awesome_config *awesomeconf,
const char *arg)
{
int x, y, w, h, nx, ny, nw, nh, ox, oy, ow, oh;
char xabs, yabs, wabs, habs;
int mx, my, dx, dy, nmx, nmy;
unsigned int dui;
Window dummy;
if(!IS_ARRANGE(floating))
if(!sel || !sel->isfloating || sel->isfixed || !arg)
return;
if(sscanf(arg, "%d%c %d%c %d%c %d%c", &x, &xabs, &y, &yabs, &w, &wabs, &h, &habs) != 8)
return;
nx = xabs == 'x' ? sel->x + x : x;
ny = yabs == 'y' ? sel->y + y : y;
nw = wabs == 'w' ? sel->w + w : w;
nh = habs == 'h' ? sel->h + h : h;
ox = sel->x;
oy = sel->y;
ow = sel->w;
oh = sel->h;
Bool xqp = XQueryPointer(sel->display, DefaultRootWindow(sel->display), &dummy, &dummy, &mx, &my, &dx, &dy, &dui);
resize(sel, nx, ny, nw, nh, True);
if (xqp && ox <= mx && (ox + ow) >= mx && oy <= my && (oy + oh) >= my)
{
nmx = mx-ox+sel->w-ow-1 < 0 ? 0 : mx-ox+sel->w-ow-1;
nmy = my-oy+sel->h-oh-1 < 0 ? 0 : my-oy+sel->h-oh-1;
XWarpPointer(sel->display, None, sel->win, 0, 0, 0, 0, nmx, nmy);
}
}
void
saveprops(Client * c, int ntags)
{
int i;
char *prop;
prop = p_new(char, ntags + 2);
for(i = 0; i < ntags; i++)
prop[i] = c->tags[i] ? '1' : '0';
if(i <= ntags)
prop[i] = c->isfloating ? '1' : '0';
prop[++i] = '\0';
XChangeProperty(c->display, c->win, AWESOMEPROPS_ATOM(c->display), XA_STRING, 8,
PropModeReplace, (unsigned char *) prop, i);
p_delete(&prop);
}
void
unban(Client * c)
{
if(!c->isbanned)
return;
XMapWindow(c->display, c->win);
setclientstate(c, NormalState);
c->isbanned = False;
}
void
unmanage(Client * c, DC *drawcontext, long state, awesome_config *awesomeconf)
{
XWindowChanges wc;
wc.border_width = c->oldborder;
/* The server grab construct avoids race conditions. */
XGrabServer(c->display);
XConfigureWindow(c->display, c->win, CWBorderWidth, &wc); /* restore border */
detach(c);
detachstack(c);
if(sel == c)
focus(c->display, drawcontext, NULL, True, awesomeconf);
XUngrabButton(c->display, AnyButton, AnyModifier, c->win);
setclientstate(c, state);
XSync(c->display, False);
XSetErrorHandler(xerror);
XUngrabServer(c->display);
if(state != NormalState)
arrange(c->display, drawcontext, awesomeconf);
p_delete(&c->tags);
p_delete(&c);
}
void
updatesizehints(Client * c)
{
long msize;
XSizeHints size;
if(!XGetWMNormalHints(c->display, 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
set_shape(Client *c)
{
int bounding_shaped;
int i, b; unsigned int u; /* dummies */
/* Logic to decide if we have a shaped window cribbed from fvwm-2.5.10. */
if (XShapeQueryExtents(c->display, c->win, &bounding_shaped, &i, &i,
&u, &u, &b, &i, &i, &u, &u) && bounding_shaped)
XShapeCombineShape(c->display, DefaultRootWindow(c->display), ShapeBounding, 0, 0, c->win, ShapeBounding, ShapeSet);
}
void
uicb_settrans(Display *disp __attribute__ ((unused)),
DC *drawcontext __attribute__ ((unused)),
awesome_config *awesomeconf __attribute__ ((unused)),
const char *arg)
{
double delta = 100.0, current_opacity = 0.0;
unsigned char *data;
Atom actual;
int format;
unsigned long n, left;
unsigned int current_opacity_raw = 0;
int set_prop = 0;
if(!sel)
return;
XGetWindowProperty(sel->display, sel->win, XInternAtom(sel->display, "_NET_WM_WINDOW_OPACITY", False),
0L, 1L, False, XA_CARDINAL, &actual, &format, &n, &left,
(unsigned char **) &data);
if(data)
{
memcpy(&current_opacity_raw, data, sizeof(unsigned int));
XFree(data);
current_opacity = (current_opacity_raw * 100.0) / 0xffffffff;
}
else
set_prop = 1;
delta = compute_new_value_from_arg(arg, current_opacity);
if(delta <= 0.0)
delta = 0.0;
else if(delta > 100.0)
{
delta = 100.0;
set_prop = 1;
}
if(delta == 100.0 && !set_prop)
setclienttrans(sel, -1);
else
setclienttrans(sel, delta);
}
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