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new.c
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/* evilwm - Minimalist Window Manager for X
* Copyright (C) 1999-2015 Ciaran Anscomb <[email protected]>
* see README for license and other details. */
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "evilwm.h"
#include "log.h"
static void init_geometry(Client *c);
static void reparent(Client *c);
static void update_window_type_flags(Client *c, unsigned int type);
#ifdef XDEBUG
static const char *map_state_string(int map_state);
static const char *gravity_string(int gravity);
static void debug_wm_normal_hints(XSizeHints *size);
#else
# define debug_wm_normal_hints(s)
#endif
void make_new_client(Window w, ScreenInfo *s) {
Client *c;
char *name;
XClassHint *class;
unsigned int window_type;
LOG_ENTER("make_new_client(window=%lx)", w);
XGrabServer(dpy);
/* First a bit of interaction with the error handler due to X's
* tendency to batch event notifications. We set a global variable to
* the id of the window we're initialising then do simple X call on
* that window. If an error is raised by this (and nothing else should
* do so as we've grabbed the server), the error handler resets the
* variable indicating the window has already disappeared, so we stop
* trying to manage it. */
initialising = w;
XFetchName(dpy, w, &name);
XSync(dpy, False);
/* If 'initialising' is now set to None, that means doing the
* XFetchName raised BadWindow - the window has been removed before
* we got a chance to grab the server. */
if (initialising == None) {
LOG_DEBUG("XError occurred for initialising window - aborting...\n");
XUngrabServer(dpy);
LOG_LEAVE();
return;
}
initialising = None;
LOG_DEBUG("screen=%d\n", s->screen);
LOG_DEBUG("name=%s\n", name ? name : "Untitled");
if (name)
XFree(name);
window_type = ewmh_get_net_wm_window_type(w);
/* Don't manage DESKTOP type windows */
if (window_type & EWMH_WINDOW_TYPE_DESKTOP) {
XMapWindow(dpy, w);
XUngrabServer(dpy);
return;
}
c = malloc(sizeof(Client));
/* Don't crash the window manager, just fail the operation. */
if (!c) {
LOG_ERROR("out of memory in new_client; limping onward\n");
LOG_LEAVE();
XUngrabServer(dpy);
return;
}
clients_tab_order = list_prepend(clients_tab_order, c);
clients_mapping_order = list_append(clients_mapping_order, c);
clients_stacking_order = list_append(clients_stacking_order, c);
c->screen = s;
c->window = w;
c->ignore_unmap = 0;
c->remove = 0;
/* Ungrab the X server as soon as possible. Now that the client is
* malloc()ed and attached to the list, it is safe for any subsequent
* X calls to raise an X error and thus flag it for removal. */
XUngrabServer(dpy);
c->border = opt_bw;
update_window_type_flags(c, window_type);
init_geometry(c);
#ifdef DEBUG
{
struct list *iter;
int i = 0;
for (iter = clients_tab_order; iter; iter = iter->next)
i++;
LOG_DEBUG("new window %dx%d+%d+%d, wincount=%d\n", c->width, c->height, c->x, c->y, i);
}
#endif
XSelectInput(dpy, c->window, ColormapChangeMask | EnterWindowMask | PropertyChangeMask);
reparent(c);
#ifdef SHAPE
if (have_shape) {
XShapeSelectInput(dpy, c->window, ShapeNotifyMask);
set_shape(c);
}
#endif
/* Read instance/class information for client and check against list
* built with -app options */
class = XAllocClassHint();
if (class) {
struct list *aiter = applications;
XGetClassHint(dpy, w, class);
while (aiter) {
Application *a = aiter->data;
if ((!a->res_name || (class->res_name && !strcmp(class->res_name, a->res_name)))
&& (!a->res_class || (class->res_class && !strcmp(class->res_class, a->res_class)))) {
if (a->geometry_mask & WidthValue)
c->width = a->width * c->width_inc;
if (a->geometry_mask & HeightValue)
c->height = a->height * c->height_inc;
if (a->geometry_mask & XValue) {
if (a->geometry_mask & XNegative)
c->x = a->x + DisplayWidth(dpy, s->screen)-c->width-c->border;
else
c->x = a->x + c->border;
}
if (a->geometry_mask & YValue) {
if (a->geometry_mask & YNegative)
c->y = a->y + DisplayHeight(dpy, s->screen)-c->height-c->border;
else
c->y = a->y + c->border;
}
moveresize(c);
if (a->is_dock) c->is_dock = 1;
#ifdef VWM
if (a->vdesk != VDESK_NONE) c->vdesk = a->vdesk;
#endif
}
aiter = aiter->next;
}
XFree(class->res_name);
XFree(class->res_class);
XFree(class);
}
ewmh_init_client(c);
ewmh_set_net_client_list(c->screen);
ewmh_set_net_client_list_stacking(c->screen);
/* Only map the window frame (and thus the window) if it's supposed
* to be visible on this virtual desktop. */
#ifdef VWM
if (is_fixed(c) || c->vdesk == s->vdesk)
#endif
{
client_show(c);
client_raise(c);
if (!(window_type & (EWMH_WINDOW_TYPE_DOCK|EWMH_WINDOW_TYPE_NOTIFICATION))) {
select_client(c);
#ifdef WARP_POINTER
setmouse(c->window, c->width + c->border - 1,
c->height + c->border - 1);
#endif
discard_enter_events(c);
}
}
#ifdef VWM
else {
set_wm_state(c, IconicState);
}
ewmh_set_net_wm_desktop(c);
#endif
LOG_LEAVE();
}
/* Calls XGetWindowAttributes, XGetWMHints and XGetWMNormalHints to determine
* window's initial geometry. */
static void init_geometry(Client *c) {
long size_flags;
XWindowAttributes attr;
unsigned long *eprop;
unsigned long nitems;
PropMwmHints *mprop;
#ifdef VWM
unsigned long *lprop;
#endif
if ( (mprop = get_property(c->window, mwm_hints, mwm_hints, &nitems)) ) {
if (nitems >= PROP_MWM_HINTS_ELEMENTS
&& (mprop->flags & MWM_HINTS_DECORATIONS)
&& !(mprop->decorations & MWM_DECOR_ALL)
&& !(mprop->decorations & MWM_DECOR_BORDER)) {
c->border = 0;
}
XFree(mprop);
}
#ifdef VWM
c->vdesk = c->screen->vdesk;
if ( (lprop = get_property(c->window, xa_net_wm_desktop, XA_CARDINAL, &nitems)) ) {
/* NB, Xlib not only returns a 32bit value in a long (which may
* not be 32bits), it also sign extends the 32bit value */
if (nitems && valid_vdesk(lprop[0] & UINT32_MAX)) {
c->vdesk = lprop[0] & UINT32_MAX;
}
XFree(lprop);
}
#endif
get_window_type(c);
/* Get current window attributes */
LOG_XENTER("XGetWindowAttributes(window=%lx)", c->window);
XGetWindowAttributes(dpy, c->window, &attr);
LOG_XDEBUG("(%s) %dx%d+%d+%d, bw = %d\n", map_state_string(attr.map_state), attr.width, attr.height, attr.x, attr.y, attr.border_width);
LOG_XLEAVE();
c->old_border = attr.border_width;
c->oldw = c->oldh = 0;
c->oldwFS = c->oldhFS = 0;
c->cmap = attr.colormap;
if ( (eprop = get_property(c->window, xa_evilwm_unmaximised_horz, XA_CARDINAL, &nitems)) ) {
if (nitems == 2) {
c->oldx = c->oldxFS = eprop[0];
c->oldw = c->oldwFS = eprop[1];
}
XFree(eprop);
}
if ( (eprop = get_property(c->window, xa_evilwm_unmaximised_vert, XA_CARDINAL, &nitems)) ) {
if (nitems == 2) {
c->oldy = c->oldyFS = eprop[0];
c->oldh = c->oldhFS = eprop[1];
}
XFree(eprop);
}
size_flags = get_wm_normal_hints(c);
if ((attr.width >= c->min_width) && (attr.height >= c->min_height)) {
/* if (attr.map_state == IsViewable || (size_flags & (PSize | USSize))) { */
c->width = attr.width;
c->height = attr.height;
} else {
c->width = c->min_width;
c->height = c->min_height;
send_config(c);
}
if ((attr.map_state == IsViewable)
|| (size_flags & (/*PPosition |*/ USPosition))) {
c->x = attr.x;
c->y = attr.y;
} else {
int xmax = DisplayWidth(dpy, c->screen->screen);
int ymax = DisplayHeight(dpy, c->screen->screen);
int x, y;
get_mouse_position(&x, &y, c->screen->root);
c->x = (x * (xmax - c->border - c->width)) / xmax;
c->y = (y * (ymax - c->border - c->height)) / ymax;
send_config(c);
}
LOG_DEBUG("window started as %dx%d +%d+%d\n", c->width, c->height, c->x, c->y);
if (attr.map_state == IsViewable) {
/* The reparent that is to come would trigger an unmap event */
c->ignore_unmap++;
}
c->x += c->old_border;
c->y += c->old_border;
gravitate_border(c, -c->old_border);
gravitate_border(c, c->border);
}
static void reparent(Client *c) {
XSetWindowAttributes p_attr;
p_attr.border_pixel = c->screen->bg.pixel;
p_attr.override_redirect = True;
p_attr.event_mask = ChildMask | ButtonPressMask | EnterWindowMask;
c->parent = XCreateWindow(dpy, c->screen->root, c->x-c->border, c->y-c->border,
c->width, c->height, c->border,
DefaultDepth(dpy, c->screen->screen), CopyFromParent,
DefaultVisual(dpy, c->screen->screen),
CWOverrideRedirect | CWBorderPixel | CWEventMask, &p_attr);
XAddToSaveSet(dpy, c->window);
XSetWindowBorderWidth(dpy, c->window, 0);
XReparentWindow(dpy, c->window, c->parent, 0, 0);
XMapWindow(dpy, c->window);
grab_button(c->parent, grabmask2, AnyButton);
grab_button(c->parent, grabmask2 | altmask, AnyButton);
}
/* Get WM_NORMAL_HINTS property */
long get_wm_normal_hints(Client *c) {
XSizeHints *size;
long flags;
long dummy;
size = XAllocSizeHints();
LOG_XENTER("XGetWMNormalHints(window=%lx)", c->window);
XGetWMNormalHints(dpy, c->window, size, &dummy);
debug_wm_normal_hints(size);
LOG_XLEAVE();
flags = size->flags;
if (flags & PMinSize) {
c->min_width = size->min_width;
c->min_height = size->min_height;
} else {
c->min_width = c->min_height = 0;
}
if (flags & PMaxSize) {
c->max_width = size->max_width;
c->max_height = size->max_height;
} else {
c->max_width = c->max_height = 0;
}
if (flags & PBaseSize) {
c->base_width = size->base_width;
c->base_height = size->base_height;
} else {
c->base_width = c->min_width;
c->base_height = c->min_height;
}
c->width_inc = c->height_inc = 1;
if (flags & PResizeInc) {
c->width_inc = size->width_inc ? size->width_inc : 1;
c->height_inc = size->height_inc ? size->height_inc : 1;
}
if (!(flags & PMinSize)) {
c->min_width = c->base_width + c->width_inc;
c->min_height = c->base_height + c->height_inc;
}
if (flags & PWinGravity) {
c->win_gravity_hint = size->win_gravity;
} else {
c->win_gravity_hint = NorthWestGravity;
}
c->win_gravity = c->win_gravity_hint;
XFree(size);
return flags;
}
static void update_window_type_flags(Client *c, unsigned int type) {
c->is_dock = (type & EWMH_WINDOW_TYPE_DOCK) ? 1 : 0;
}
/* Determine window type and update flags accordingly */
void get_window_type(Client *c) {
unsigned int type = ewmh_get_net_wm_window_type(c->window);
update_window_type_flags(c, type);
}
#ifdef XDEBUG
static const char *map_state_string(int map_state) {
const char *map_states[4] = {
"IsUnmapped",
"IsUnviewable",
"IsViewable",
"Unknown"
};
return ((unsigned int)map_state < 3)
? map_states[map_state]
: map_states[3];
}
static const char *gravity_string(int gravity) {
const char *gravities[12] = {
"ForgetGravity",
"NorthWestGravity",
"NorthGravity",
"NorthEastGravity",
"WestGravity",
"CenterGravity",
"EastGravity",
"SouthWestGravity",
"SouthGravity",
"SouthEastGravity",
"StaticGravity",
"Unknown"
};
return ((unsigned int)gravity < 11) ? gravities[gravity] : gravities[11];
}
static void debug_wm_normal_hints(XSizeHints *size) {
if (size->flags & 15) {
if (size->flags & USPosition) {
LOG_XDEBUG_("USPosition ");
}
if (size->flags & USSize) {
LOG_XDEBUG_("USSize ");
}
if (size->flags & PPosition) {
LOG_XDEBUG_("PPosition ");
}
if (size->flags & PSize) {
LOG_XDEBUG_("PSize");
}
LOG_XDEBUG_("\n");
}
if (size->flags & PMinSize) {
LOG_XDEBUG("PMinSize: min_width = %d, min_height = %d\n", size->min_width, size->min_height);
}
if (size->flags & PMaxSize) {
LOG_XDEBUG("PMaxSize: max_width = %d, max_height = %d\n", size->max_width, size->max_height);
}
if (size->flags & PResizeInc) {
LOG_XDEBUG("PResizeInc: width_inc = %d, height_inc = %d\n",
size->width_inc, size->height_inc);
}
if (size->flags & PAspect) {
LOG_XDEBUG("PAspect: min_aspect = %d/%d, max_aspect = %d/%d\n",
size->min_aspect.x, size->min_aspect.y,
size->max_aspect.x, size->max_aspect.y);
}
if (size->flags & PBaseSize) {
LOG_XDEBUG("PBaseSize: base_width = %d, base_height = %d\n",
size->base_width, size->base_height);
}
if (size->flags & PWinGravity) {
LOG_XDEBUG("PWinGravity: %s\n", gravity_string(size->win_gravity));
}
}
#endif