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xstartplacement/devilspie/xutils.c

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/**
* This file is part of devilspie2
* Copyright (C) 2001 Havoc Pennington, 2011-2019 Andreas Rönnquist
* Copyright (C) 2019-2021 Darren Salt
*
* devilspie2 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 3 of the License, or
* (at your option) any later version.
*
* devilspie2 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 devilspie2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <X11/Xatom.h>
#include <glib.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <X11/Xlib.h>
#include <string.h>
// FIXME: retrieve screen position via wnck
#include <X11/extensions/Xinerama.h>
#define WNCK_I_KNOW_THIS_IS_UNSTABLE
#include <libwnck/libwnck.h>
#include <locale.h>
#include "intl.h"
#include "xutils.h"
#if (GTK_MAJOR_VERSION >= 3)
#define HAVE_GTK3
#endif
static GHashTable *atom_hash = NULL;
static GHashTable *reverse_atom_hash = NULL;
/**
*
*/
Atom my_wnck_atom_get(const char *atom_name)
{
Atom retval;
g_return_val_if_fail (atom_name != NULL, None);
if (!atom_hash) {
atom_hash = g_hash_table_new (g_str_hash, g_str_equal);
reverse_atom_hash = g_hash_table_new (NULL, NULL);
}
retval = GPOINTER_TO_UINT (g_hash_table_lookup (atom_hash, atom_name));
if (!retval) {
retval = XInternAtom (gdk_x11_get_default_xdisplay(), atom_name, FALSE);
if (retval != None) {
char *name_copy;
name_copy = g_strdup (atom_name);
g_hash_table_insert (atom_hash,
name_copy,
GUINT_TO_POINTER (retval));
g_hash_table_insert (reverse_atom_hash,
GUINT_TO_POINTER (retval),
name_copy);
}
}
return retval;
}
/**
*
*/
void devilspie2_change_state(Screen *screen, Window xwindow,
gboolean add,
Atom state1,
Atom state2)
{
XEvent xev;
#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
#define _NET_WM_STATE_ADD 1 /* add/set property */
#define _NET_WM_STATE_TOGGLE 2 /* toggle property */
xev.xclient.type = ClientMessage;
xev.xclient.serial = 0;
xev.xclient.send_event = True;
xev.xclient.display = gdk_x11_get_default_xdisplay();
xev.xclient.window = xwindow;
xev.xclient.message_type = my_wnck_atom_get ("_NET_WM_STATE");
xev.xclient.format = 32;
xev.xclient.data.l[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
xev.xclient.data.l[1] = state1;
xev.xclient.data.l[2] = state2;
XSendEvent (gdk_x11_get_default_xdisplay(),
RootWindowOfScreen (screen),
False,
SubstructureRedirectMask | SubstructureNotifyMask,
&xev);
}
/**
*
*/
void devilspie2_error_trap_push()
{
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_x11_display_error_trap_push(gdk_display_get_default());
#else
gdk_error_trap_push();
#endif
}
/**
*
*/
int devilspie2_error_trap_pop()
{
#if GTK_CHECK_VERSION(3, 0, 0)
return gdk_x11_display_error_trap_pop(gdk_display_get_default());
#else
XSync(gdk_x11_get_default_xdisplay(),False);
return gdk_error_trap_pop();
#endif
}
/**
*
*/
static void set_decorations(Window xid /*WnckWindow *window*/, gboolean decorate)
{
#define PROP_MOTIF_WM_HINTS_ELEMENTS 5
#define MWM_HINTS_DECORATIONS (1L << 1)
struct {
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long inputMode;
unsigned long status;
} hints = {0,};
hints.flags = MWM_HINTS_DECORATIONS;
hints.decorations = decorate ? 1 : 0;
/* Set Motif hints, most window managers handle these */
XChangeProperty(gdk_x11_get_default_xdisplay(), xid /*wnck_window_get_xid (window)*/,
my_wnck_atom_get ("_MOTIF_WM_HINTS"),
my_wnck_atom_get ("_MOTIF_WM_HINTS"), 32, PropModeReplace,
(unsigned char *)&hints, PROP_MOTIF_WM_HINTS_ELEMENTS);
//Window xid;
XWindowAttributes attrs;
//xid = wnck_window_get_xid (window);
XGetWindowAttributes(gdk_x11_get_default_xdisplay(), xid, &attrs);
/* Apart from OpenBox, which doesn't respect it changing after mapping.
* Instead it has this workaround.
*/
devilspie2_change_state (attrs.screen,
xid /*wnck_window_get_xid(window)*/, !decorate,
my_wnck_atom_get ("_OB_WM_STATE_UNDECORATED"), 0);
}
/**
*
*/
gboolean decorate_window(Window xid)
{
devilspie2_error_trap_push();
set_decorations(xid, TRUE);
if (devilspie2_error_trap_pop()) {
g_printerr("decorate_window %s\n", _("Failed!"));
return FALSE;
}
return TRUE;
}
/**
*
*/
gboolean undecorate_window(Window xid)
{
devilspie2_error_trap_push();
set_decorations(xid, FALSE);
if (devilspie2_error_trap_pop()) {
g_printerr("decorate_window %s\n", _("Failed!"));
return FALSE;
}
return TRUE;
}
/**
*
*/
gboolean get_decorated(Window xid /*WnckWindow *window*/)
{
Display *disp = gdk_x11_get_default_xdisplay();
Atom type_ret;
Atom hints_atom = XInternAtom(disp, "_MOTIF_WM_HINTS", False);
int format_ret;
int err, result = 0;
unsigned long nitems_ret, bytes_after_ret, *prop_ret;
devilspie2_error_trap_push();
XGetWindowProperty(disp, xid, hints_atom, 0,
PROP_MOTIF_WM_HINTS_ELEMENTS, 0, hints_atom,
&type_ret, &format_ret, &nitems_ret,
&bytes_after_ret, (unsigned char **)&prop_ret);
err = devilspie2_error_trap_pop ();
if (err != Success || result != Success)
return FALSE;
return type_ret != hints_atom || nitems_ret < 3 || prop_ret[2] != 0;
}
/**
*
*/
Screen *devilspie2_window_get_xscreen(Window xid)
{
XWindowAttributes attrs;
XGetWindowAttributes(gdk_x11_get_default_xdisplay(), xid, &attrs);
return attrs.screen;
}
/**
*
*/
char* my_wnck_get_string_property(Window xwindow, Atom atom, gboolean *utf8)
{
Atom type;
int format;
gulong nitems;
gulong bytes_after;
unsigned char *property;
int err, result;
char *retval;
Atom XA_UTF8_STRING;
gboolean is_utf8 = True;
if (utf8)
*utf8 = False;
devilspie2_error_trap_push();
property = NULL;
result = XGetWindowProperty (gdk_x11_get_default_xdisplay (),
xwindow, atom,
0, G_MAXLONG,
False, AnyPropertyType, &type,
&format, &nitems,
&bytes_after, &property);
err = devilspie2_error_trap_pop ();
if (err != Success || result != Success)
return NULL;
retval = NULL;
XA_UTF8_STRING = XInternAtom(gdk_x11_get_default_xdisplay(), "UTF8_STRING", False);
if (utf8)
*utf8 = False;
if (type == XA_STRING) {
is_utf8 = False;
retval = g_strdup ((char*)property);
} else if (type == XA_UTF8_STRING) {
retval = g_strdup ((char*)property);
} else if (type == XA_ATOM && nitems > 0 && format == 32) {
long *pp;
pp = (long *)property; // we can assume (long *) since format == 32
if (nitems == 1) {
char* prop_name;
prop_name = XGetAtomName (gdk_x11_get_default_xdisplay (), *pp);
if (prop_name) {
retval = g_strdup (prop_name);
XFree (prop_name);
}
} else {
gulong i;
char** prop_names;
prop_names = g_new (char *, nitems + 1);
prop_names[nitems] = NULL;
for (i=0; i < nitems; i++) {
prop_names[i] = XGetAtomName (gdk_x11_get_default_xdisplay (),
*pp++);
}
retval = g_strjoinv (", ", prop_names);
for (i=0; i < nitems; i++) {
if (prop_names[i]) XFree (prop_names[i]);
}
g_free (prop_names);
}
} else if (type == XA_CARDINAL && nitems == 1) {
switch(format) {
case 32:
retval = g_strdup_printf("%lu", *(unsigned long*)property);
break;
case 16:
retval = g_strdup_printf("%u", *(unsigned int*)property);
break;
case 8:
retval = g_strdup_printf("%c", *(unsigned char*)property);
break;
}
} else if (type == XA_WINDOW && nitems == 1) {
/* unsinged long is the same format used for XID by libwnck:
* https://git.gnome.org/browse/libwnck/tree/libwnck/window.c?h=3.14.0#n763
*/
retval = g_strdup_printf("%lu", (gulong) *(Window *)property);
}
XFree (property);
if (utf8)
*utf8 = is_utf8;
return retval;
}
/**
*
*/
void my_wnck_set_string_property(Window xwindow, Atom atom, const gchar *const string, gboolean utf8)
{
const unsigned char *const str = (const unsigned char *)string;
Display *display = gdk_x11_get_default_xdisplay();
Atom type = utf8 ? XInternAtom(display, "UTF8_STRING", False) : XA_STRING;
devilspie2_error_trap_push();
XChangeProperty (display, xwindow, atom, type, 8, PropModeReplace, str, strlen(string));
devilspie2_error_trap_pop ();
}
/**
*
*/
void my_wnck_set_cardinal_property(Window xwindow, Atom atom, int32_t value)
{
devilspie2_error_trap_push();
XChangeProperty (gdk_x11_get_default_xdisplay (),
xwindow, atom, XA_CARDINAL, 32,
PropModeReplace, (unsigned char *)&value, 1);
devilspie2_error_trap_pop ();
}
/**
*
*/
void my_wnck_delete_property(Window xwindow, Atom atom)
{
devilspie2_error_trap_push();
XDeleteProperty (gdk_x11_get_default_xdisplay (), xwindow, atom);
devilspie2_error_trap_pop ();
}
/**
*
*/
gboolean
my_wnck_get_cardinal_list (Window xwindow, Atom atom,
gulong **cardinals, int *len)
{
Atom type;
int format;
gulong nitems;
gulong bytes_after;
gulong *nums;
int err, result;
*cardinals = NULL;
*len = 0;
devilspie2_error_trap_push();
type = None;
result = XGetWindowProperty(gdk_x11_get_default_xdisplay (),
xwindow,
atom,
0, G_MAXLONG,
False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, (void*)&nums);
err = devilspie2_error_trap_pop();
if ((err != Success) || (result != Success))
return FALSE;
if (type != XA_CARDINAL) {
XFree (nums);
return FALSE;
}
*cardinals = g_new(gulong, nitems);
memcpy(*cardinals, nums, sizeof (gulong) * nitems);
*len = nitems;
XFree(nums);
return TRUE;
}
/**
* Get viewport start coordinates to the x and y integers,
* returns 0 on success and non-zero on error.
*/
int devilspie2_get_viewport_start(Window xid, int *x, int *y)
{
gulong *list;
int len;
int result = -1;
my_wnck_get_cardinal_list(RootWindowOfScreen(devilspie2_window_get_xscreen(xid)),
my_wnck_atom_get("_NET_DESKTOP_VIEWPORT"),
&list, &len);
if (len > 0) {
*x = list[0];
*y = list[1];
result = 0;
}
g_free(list);
return result;
}
/**
*
*/
void my_window_set_window_type(Window xid, gchar *window_type)
{
Display *display = gdk_x11_get_default_xdisplay();
Atom atoms[10];
/*
_NET_WM_WINDOW_TYPE_DESKTOP, ATOM
_NET_WM_WINDOW_TYPE_DOCK, ATOM
_NET_WM_WINDOW_TYPE_TOOLBAR, ATOM
_NET_WM_WINDOW_TYPE_MENU, ATOM
_NET_WM_WINDOW_TYPE_UTILITY, ATOM
_NET_WM_WINDOW_TYPE_SPLASH, ATOM
_NET_WM_WINDOW_TYPE_DIALOG, ATOM
_NET_WM_WINDOW_TYPE_NORMAL, ATOM
*/
gchar *type = NULL;
// Make it a recognized _NET_WM_TYPE
if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_DESKTOP") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_DESKTOP");
} else if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_DOCK") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_DOCK");
} else if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_TOOLBAR") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_TOOLBAR");
} else if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_MENU") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_MENU");
} else if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_UTILITY") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_UTILITY");
} else if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_SPLASH") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_SPLASH");
} else if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_DIALOG") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_DIALOG");
} else if (g_ascii_strcasecmp(window_type, "WINDOW_TYPE_NORMAL") == 0) {
type = g_strdup("_NET_WM_WINDOW_TYPE_NORMAL");
} else {
type = g_strdup(window_type);
}
atoms[0] = XInternAtom(display, type, False);
XChangeProperty(gdk_x11_get_default_xdisplay(), xid,
XInternAtom(display, "_NET_WM_WINDOW_TYPE", False), XA_ATOM, 32,
PropModeReplace, (unsigned char *) &atoms, 1);
g_free(type);
}
/**
*
*/
void my_window_set_opacity(Window xid, double value)
{
Display *display = gdk_x11_get_default_xdisplay();
unsigned int opacity = (uint)(0xffffffff * value);
Atom atom_net_wm_opacity = XInternAtom(display, "_NET_WM_WINDOW_OPACITY", False);
XChangeProperty(gdk_x11_get_default_xdisplay(), xid,
atom_net_wm_opacity, XA_CARDINAL, 32,
PropModeReplace, (unsigned char *) &opacity, 1L);
}
/**
*
*/
void adjust_for_decoration(WnckWindow *window, int *x, int *y, int *w, int *h)
{
GdkRectangle geom, geom_undec;
wnck_window_get_geometry(window, &geom.x, &geom.y, &geom.width, &geom.height);
wnck_window_get_client_window_geometry(window, &geom_undec.x, &geom_undec.y, &geom_undec.width, &geom_undec.height);
if (x) *x -= geom_undec.x - geom.x;
if (y) *y -= geom_undec.y - geom.y;
if (w) *w -= geom_undec.width - geom.width;
if (h) *h -= geom_undec.height - geom.height;
}
/**
*
*/
void set_window_geometry(WnckWindow *window, int x, int y, int w, int h, gboolean adjusting_for_decoration)
{
if (window) {
WnckScreen *screen = wnck_window_get_screen(window);
int sw = wnck_screen_get_width(screen);
int sh = wnck_screen_get_height(screen);
int gravity = WNCK_WINDOW_GRAVITY_CURRENT;
if (x >= 0 && y >= 0)
gravity = WNCK_WINDOW_GRAVITY_NORTHWEST;
if (x >= 0 && y < 0)
gravity = WNCK_WINDOW_GRAVITY_SOUTHWEST;
if (x < 0 && y >= 0)
gravity = WNCK_WINDOW_GRAVITY_NORTHEAST;
if (x < 0 && y < 0)
gravity = WNCK_WINDOW_GRAVITY_SOUTHEAST;
if (x < 0)
x = sw + x;
if (y < 0)
y = sh + y;
if (adjusting_for_decoration)
adjust_for_decoration(window, &x, &y, &w, &h);
wnck_window_set_geometry(window,
gravity,
WNCK_WINDOW_CHANGE_X +
WNCK_WINDOW_CHANGE_Y +
WNCK_WINDOW_CHANGE_WIDTH +
WNCK_WINDOW_CHANGE_HEIGHT,
x, y, w, h);
}
}
/**
*
*/
int get_monitor_count(void)
{
// FIXME: retrieve monitor count via wnck
// For now, use Xinerama directly
Display *dpy = gdk_x11_get_default_xdisplay();
if (!XineramaIsActive(dpy))
return 0;
// Normally, we'd use the return value, but we only want the number of entries
int monitor_count = 0;
XineramaQueryScreens(dpy, &monitor_count);
return monitor_count;
}
/**
*
*/
int get_monitor_index_geometry(WnckWindow *window, const GdkRectangle *window_r_in, GdkRectangle *monitor_r)
{
// monitor_r is always filled in unless the return value is -1
// FIXME: retrieve monitor info via wnck
// For now, use Xinerama directly
int id = -1;
int monitor_count = 0;
XineramaScreenInfo *monitor_list = NULL;
Display *dpy = gdk_x11_get_default_xdisplay();
if (XineramaIsActive(dpy))
monitor_list = XineramaQueryScreens(dpy, &monitor_count);
// bail out if no Xinermama or no monitors
if (!monitor_list || !monitor_count)
return -1;
// find which monitor the window's centre is on
GdkRectangle window_r;
if (window)
wnck_window_get_geometry(window, &window_r.x, &window_r.y, &window_r.width, &window_r.height);
else
window_r = *window_r_in;
GdkPoint centre = { window_r.x + window_r.width / 2, window_r.y + window_r.height / 2 };
for (int i = 0; i < monitor_count; ++i) {
if (centre.x >= monitor_list[i].x_org &&
centre.x < monitor_list[i].x_org + monitor_list[i].width &&
centre.y >= monitor_list[i].y_org &&
centre.y < monitor_list[i].y_org + monitor_list[i].height) {
id = i;
break;
}
}
// if that fails, try intersection of rectangles
// just use the first matching
// FIXME?: should find whichever shows most of the window (if tied, closest to window centre)
if (id < 0) {
for (int i = 0; i < monitor_count; ++i) {
GdkRectangle r = {
monitor_list[i].x_org, monitor_list[i].y_org,
monitor_list[i].x_org + monitor_list[i].width,
monitor_list[i].y_org + monitor_list[i].height
};
if (gdk_rectangle_intersect(&window_r, &r, NULL)) {
id = i;
break;
}
}
}
// and if that too fails, use the default
if (id < 0)
id = 0; // FIXME: primary monitor
if (monitor_r) {
monitor_r->x = monitor_list[id].x_org;
monitor_r->y = monitor_list[id].y_org;
monitor_r->width = monitor_list[id].width;
monitor_r->height = monitor_list[id].height;
}
return id;
}
/**
*
*/
int get_monitor_geometry(int index, GdkRectangle *monitor_r)
{
// if out of range, output is for monitor 0 (if present) else this:
*monitor_r = (GdkRectangle){ 0, 0, 640, 480 };
// FIXME: retrieve monitor info via wnck
// For now, use Xinerama directly
int monitor_count = 0;
XineramaScreenInfo *monitor_list = NULL;
Display *dpy = gdk_x11_get_default_xdisplay();
if (XineramaIsActive(dpy))
monitor_list = XineramaQueryScreens(dpy, &monitor_count);
// bail out if no Xinermama or no monitors
if (!monitor_list || !monitor_count)
return -1; // no xinerama!
// FIXME: default to primary monitor
if (index < 0 || index >= monitor_count)
index = 0;
monitor_r->x = monitor_list[index].x_org;
monitor_r->y = monitor_list[index].y_org;
monitor_r->width = monitor_list[index].width;
monitor_r->height = monitor_list[index].height;
return index;
}
/**
*
*/
int get_window_workspace_geometry(WnckWindow *window, GdkRectangle *geom)
{
WnckScreen *screen = wnck_window_get_screen(window);
WnckWorkspace *workspace = wnck_screen_get_active_workspace(screen);
if (workspace == NULL) {
workspace = wnck_screen_get_workspace(screen, 0);
}
if (workspace == NULL) {
g_printerr(_("Could not get workspace"));
return 1;
}
geom->x = 0;
geom->y = 0;
geom->width = wnck_workspace_get_width(workspace);
geom->height = wnck_workspace_get_height(workspace);
return 0;
}
/**
* Wrapper for the above geometry-reading functions
* Selects according to monitor number
* Returns the monitor index, MONITOR_ALL or, on error, MONITOR_NONE
*/
int get_monitor_or_workspace_geometry(int monitor_no, WnckWindow *window, GdkRectangle *bounds)
{
int ret;
switch (monitor_no)
{
case MONITOR_ALL:
return get_window_workspace_geometry(window, bounds) ? MONITOR_NONE : MONITOR_ALL;
case MONITOR_WINDOW:
ret = get_monitor_index_geometry(window, NULL, bounds);
return ret < 0 ? MONITOR_NONE : ret;
default:
if (monitor_no < 0 || monitor_no >= get_monitor_count())
return MONITOR_NONE;
return get_monitor_geometry(monitor_no, bounds) < 0 ? MONITOR_NONE : monitor_no;
}
}
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