Splitting the X11-specific "freeglut_spaceball.c" code into its own file

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1057 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
fayjf 2012-02-05 04:04:28 +00:00
parent 9f0610a457
commit 205e95320b
3 changed files with 484 additions and 406 deletions

View File

@ -12,53 +12,14 @@
/* -- PRIVATE FUNCTIONS --------------------------------------------------- */
#if TARGET_HOST_POSIX_X11
#include <X11/Xlib.h>
enum {
SPNAV_EVENT_ANY, /* used by spnav_remove_events() */
SPNAV_EVENT_MOTION,
SPNAV_EVENT_BUTTON /* includes both press and release */
};
struct spnav_event_motion {
int type;
int x, y, z;
int rx, ry, rz;
unsigned int period;
int *data;
};
struct spnav_event_button {
int type;
int press;
int bnum;
};
typedef union spnav_event {
int type;
struct spnav_event_motion motion;
struct spnav_event_button button;
} spnav_event;
extern void fgPlatformInitializeSpaceball(void);
extern void fgPlatformSpaceballClose(void);
extern int fgPlatformHasSpaceball(void);
extern int fgPlatformSpaceballNumButtons(void);
extern void fgPlatformSpaceballSetWindow(SFG_Window *window);
static int spnav_x11_open(Display *dpy, Window win);
static int spnav_x11_window(Window win);
static int spnav_x11_event(const XEvent *xev, spnav_event *event);
static int spnav_close(void);
static int spnav_fd(void);
static int spnav_remove_events(int type);
static SFG_Window *spnav_win;
#endif
/* Flag telling whether we have a spaceball:
* 0 - haven't tried initializing
* 1 - have successfully initialized
* -1 - have tried to initialize but not succeeded
*/
static int sball_initialized = 0;
int sball_initialized = 0;
void fgInitialiseSpaceball(void)
{
@ -66,34 +27,14 @@ void fgInitialiseSpaceball(void)
return;
}
#if TARGET_HOST_POSIX_X11
{
Window w;
if(!fgStructure.CurrentWindow)
{
sball_initialized = -1;
return;
}
w = fgStructure.CurrentWindow->Window.Handle;
if(spnav_x11_open(fgDisplay.pDisplay.Display, w) == -1)
{
sball_initialized = -1;
return;
}
}
#endif
fgPlatformInitializeSpaceball();
sball_initialized = 1;
}
void fgSpaceballClose(void)
{
#if TARGET_HOST_POSIX_X11
spnav_close();
#endif
}
fgPlatformSpaceballClose();}
int fgHasSpaceball(void)
{
@ -105,14 +46,7 @@ int fgHasSpaceball(void)
}
}
#if TARGET_HOST_POSIX_X11
/* XXX this function should somehow query the driver if there's a device
* plugged in, as opposed to just checking if there's a driver to talk to.
*/
return spnav_fd() == -1 ? 0 : 1;
#else
return 0;
#endif
return fgPlatformHasSpaceball();
}
int fgSpaceballNumButtons(void)
@ -125,11 +59,7 @@ int fgSpaceballNumButtons(void)
}
}
#if TARGET_HOST_POSIX_X11
return 2; /* TODO implement this properly */
#else
return 0;
#endif
return fgPlatformSpaceballNumButtons();
}
void fgSpaceballSetWindow(SFG_Window *window)
@ -141,331 +71,6 @@ void fgSpaceballSetWindow(SFG_Window *window)
}
}
#if TARGET_HOST_POSIX_X11
if(spnav_win != window) {
spnav_x11_window(window->Window.Handle);
spnav_win = window;
}
#endif
fgPlatformSpaceballSetWindow(window);
}
#if TARGET_HOST_POSIX_X11
int fgIsSpaceballXEvent(const XEvent *xev)
{
spnav_event sev;
if(spnav_win != fgStructure.CurrentWindow) {
/* this will also initialize spaceball if needed (first call) */
fgSpaceballSetWindow(fgStructure.CurrentWindow);
}
if(sball_initialized != 1) {
return 0;
}
return spnav_x11_event(xev, &sev);
}
void fgSpaceballHandleXEvent(const XEvent *xev)
{
spnav_event sev;
if(sball_initialized == 0) {
fgInitialiseSpaceball();
if(sball_initialized != 1) {
return;
}
}
if(spnav_x11_event(xev, &sev)) {
switch(sev.type) {
case SPNAV_EVENT_MOTION:
if(sev.motion.x | sev.motion.y | sev.motion.z) {
INVOKE_WCB(*spnav_win, SpaceMotion, (sev.motion.x, sev.motion.y, sev.motion.z));
}
if(sev.motion.rx | sev.motion.ry | sev.motion.rz) {
INVOKE_WCB(*spnav_win, SpaceRotation, (sev.motion.rx, sev.motion.ry, sev.motion.rz));
}
spnav_remove_events(SPNAV_EVENT_MOTION);
break;
case SPNAV_EVENT_BUTTON:
INVOKE_WCB(*spnav_win, SpaceButton, (sev.button.bnum, sev.button.press ? GLUT_DOWN : GLUT_UP));
break;
default:
break;
}
}
}
/*
The following code is part of libspnav, part of the spacenav project (spacenav.sf.net)
Copyright (C) 2007-2009 John Tsiombikas <nuclear@member.fsf.org>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <X11/Xlib.h>
#include <X11/Xutil.h>
static Window get_daemon_window(Display *dpy);
static int catch_badwin(Display *dpy, XErrorEvent *err);
static Display *dpy;
static Window app_win;
static Atom motion_event, button_press_event, button_release_event, command_event;
enum {
CMD_APP_WINDOW = 27695,
CMD_APP_SENS
};
#define IS_OPEN dpy
struct event_node {
spnav_event event;
struct event_node *next;
};
static int spnav_x11_open(Display *display, Window win)
{
if(IS_OPEN) {
return -1;
}
dpy = display;
motion_event = XInternAtom(dpy, "MotionEvent", True);
button_press_event = XInternAtom(dpy, "ButtonPressEvent", True);
button_release_event = XInternAtom(dpy, "ButtonReleaseEvent", True);
command_event = XInternAtom(dpy, "CommandEvent", True);
if(!motion_event || !button_press_event || !button_release_event || !command_event) {
dpy = 0;
return -1; /* daemon not started */
}
if(spnav_x11_window(win) == -1) {
dpy = 0;
return -1; /* daemon not started */
}
app_win = win;
return 0;
}
static int spnav_close(void)
{
if(dpy) {
spnav_x11_window(DefaultRootWindow(dpy));
app_win = 0;
dpy = 0;
return 0;
}
return -1;
}
static int spnav_x11_window(Window win)
{
int (*prev_xerr_handler)(Display*, XErrorEvent*);
XEvent xev;
Window daemon_win;
if(!IS_OPEN) {
return -1;
}
if(!(daemon_win = get_daemon_window(dpy))) {
return -1;
}
prev_xerr_handler = XSetErrorHandler(catch_badwin);
xev.type = ClientMessage;
xev.xclient.send_event = False;
xev.xclient.display = dpy;
xev.xclient.window = win;
xev.xclient.message_type = command_event;
xev.xclient.format = 16;
xev.xclient.data.s[0] = ((unsigned int)win & 0xffff0000) >> 16;
xev.xclient.data.s[1] = (unsigned int)win & 0xffff;
xev.xclient.data.s[2] = CMD_APP_WINDOW;
XSendEvent(dpy, daemon_win, False, 0, &xev);
XSync(dpy, False);
XSetErrorHandler(prev_xerr_handler);
return 0;
}
static int spnav_fd(void)
{
if(dpy) {
return ConnectionNumber(dpy);
}
return -1;
}
/*static int spnav_wait_event(spnav_event *event)
{
if(dpy) {
for(;;) {
XEvent xev;
XNextEvent(dpy, &xev);
if(spnav_x11_event(&xev, event) > 0) {
return event->type;
}
}
}
return 0;
}
static int spnav_poll_event(spnav_event *event)
{
if(dpy) {
if(XPending(dpy)) {
XEvent xev;
XNextEvent(dpy, &xev);
return spnav_x11_event(&xev, event);
}
}
return 0;
}*/
static Bool match_events(Display *dpy, XEvent *xev, char *arg)
{
int evtype = *(int*)arg;
if(xev->type != ClientMessage) {
return False;
}
if(xev->xclient.message_type == motion_event) {
return !evtype || evtype == SPNAV_EVENT_MOTION ? True : False;
}
if(xev->xclient.message_type == button_press_event ||
xev->xclient.message_type == button_release_event) {
return !evtype || evtype == SPNAV_EVENT_BUTTON ? True : False;
}
return False;
}
static int spnav_remove_events(int type)
{
int rm_count = 0;
if(dpy) {
XEvent xev;
while(XCheckIfEvent(dpy, &xev, match_events, (char*)&type)) {
rm_count++;
}
return rm_count;
}
return 0;
}
static int spnav_x11_event(const XEvent *xev, spnav_event *event)
{
int i;
int xmsg_type;
if(xev->type != ClientMessage) {
return 0;
}
xmsg_type = xev->xclient.message_type;
if(xmsg_type != motion_event && xmsg_type != button_press_event &&
xmsg_type != button_release_event) {
return 0;
}
if(xmsg_type == motion_event) {
event->type = SPNAV_EVENT_MOTION;
event->motion.data = &event->motion.x;
for(i=0; i<6; i++) {
event->motion.data[i] = xev->xclient.data.s[i + 2];
}
event->motion.period = xev->xclient.data.s[8];
} else {
event->type = SPNAV_EVENT_BUTTON;
event->button.press = xmsg_type == button_press_event ? 1 : 0;
event->button.bnum = xev->xclient.data.s[2];
}
return event->type;
}
static Window get_daemon_window(Display *dpy)
{
Window win, root_win;
XTextProperty wname;
Atom type;
int fmt;
unsigned long nitems, bytes_after;
unsigned char *prop;
root_win = DefaultRootWindow(dpy);
XGetWindowProperty(dpy, root_win, command_event, 0, 1, False, AnyPropertyType, &type, &fmt, &nitems, &bytes_after, &prop);
if(!prop) {
return 0;
}
win = *(Window*)prop;
XFree(prop);
if(!XGetWMName(dpy, win, &wname) || strcmp("Magellan Window", (char*)wname.value) != 0) {
return 0;
}
return win;
}
static int catch_badwin(Display *dpy, XErrorEvent *err)
{
char buf[256];
if(err->error_code == BadWindow) {
/* do nothing? */
} else {
XGetErrorText(dpy, err->error_code, buf, sizeof buf);
fprintf(stderr, "Caught unexpected X error: %s\n", buf);
}
return 0;
}
#endif /* TARGET_HOST_POSIX_X11 */

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@ -0,0 +1,58 @@
/*
* freeglut_spaceball_mswin.c
*
* Spaceball support for Windows
*
* Copyright (c) 2012 Stephen J. Baker. All Rights Reserved.
* Written by Evan Felix <karcaw at gmail.com>
* Creation date: Sat Feb 4, 2012
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* This code is a very complicated way of doing nothing.
* But is needed for mswindows platform builds.
*/
#include <GL/freeglut.h>
#include "../Common/freeglut_internal.h"
void fgPlatformInitializeSpaceball(void)
{
return;
}
void fgPlatformSpaceballClose(void)
{
return;
}
int fgPlatformHasSpaceball(void)
{
return 0;
}
int fgPlatformSpaceballNumButtons(void)
{
return 0;
}
void fgPlatformSpaceballSetWindow(SFG_Window *window)
{
return;
}

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@ -0,0 +1,415 @@
/* Spaceball support for Linux.
* Written by John Tsiombikas <nuclear@member.fsf.org>
* Copied for Platform code by Evan Felix <karcaw at gmail.com>
* Creation date: Thur Feb 2 2012
*
* This code supports 3Dconnexion's 6-dof space-whatever devices.
* It can communicate with either the proprietary 3Dconnexion daemon (3dxsrv)
* free spacenavd (http://spacenav.sourceforge.net), through the "standard"
* magellan X-based protocol.
*/
#include <GL/freeglut.h>
#include "freeglut_internal.h"
#include <X11/Xlib.h>
extern int sball_initialized;
enum {
SPNAV_EVENT_ANY, /* used by spnav_remove_events() */
SPNAV_EVENT_MOTION,
SPNAV_EVENT_BUTTON /* includes both press and release */
};
struct spnav_event_motion {
int type;
int x, y, z;
int rx, ry, rz;
unsigned int period;
int *data;
};
struct spnav_event_button {
int type;
int press;
int bnum;
};
typedef union spnav_event {
int type;
struct spnav_event_motion motion;
struct spnav_event_button button;
} spnav_event;
static int spnav_x11_open(Display *dpy, Window win);
static int spnav_x11_window(Window win);
static int spnav_x11_event(const XEvent *xev, spnav_event *event);
static int spnav_close(void);
static int spnav_fd(void);
static int spnav_remove_events(int type);
static SFG_Window *spnav_win;
void fgPlatformInitializeSpaceball(void)
{
Window w;
sball_initialized = 1;
if(!fgStructure.CurrentWindow)
{
sball_initialized = -1;
return;
}
w = fgStructure.CurrentWindow->Window.Handle;
if(spnav_x11_open(fgDisplay.pDisplay.Display, w) == -1)
{
sball_initialized = -1;
return;
}
}
void fgPlatformSpaceballClose(void)
{
spnav_close();
}
int fgPlatformHasSpaceball(void)
{
/* XXX this function should somehow query the driver if there's a device
* plugged in, as opposed to just checking if there's a driver to talk to.
*/
return spnav_fd() == -1 ? 0 : 1;
}
int fgPlatformSpaceballNumButtons(void) {
return 2;
}
void fgPlatformSpaceballSetWindow(SFG_Window *window)
{
if(spnav_win != window) {
spnav_x11_window(window->Window.Handle);
spnav_win = window;
}
}
int fgIsSpaceballXEvent(const XEvent *xev)
{
spnav_event sev;
if(spnav_win != fgStructure.CurrentWindow) {
/* this will also initialize spaceball if needed (first call) */
fgSpaceballSetWindow(fgStructure.CurrentWindow);
}
if(sball_initialized != 1) {
return 0;
}
return spnav_x11_event(xev, &sev);
}
void fgSpaceballHandleXEvent(const XEvent *xev)
{
spnav_event sev;
if(sball_initialized == 0) {
fgInitialiseSpaceball();
if(sball_initialized != 1) {
return;
}
}
if(spnav_x11_event(xev, &sev)) {
switch(sev.type) {
case SPNAV_EVENT_MOTION:
if(sev.motion.x | sev.motion.y | sev.motion.z) {
INVOKE_WCB(*spnav_win, SpaceMotion, (sev.motion.x, sev.motion.y, sev.motion.z));
}
if(sev.motion.rx | sev.motion.ry | sev.motion.rz) {
INVOKE_WCB(*spnav_win, SpaceRotation, (sev.motion.rx, sev.motion.ry, sev.motion.rz));
}
spnav_remove_events(SPNAV_EVENT_MOTION);
break;
case SPNAV_EVENT_BUTTON:
INVOKE_WCB(*spnav_win, SpaceButton, (sev.button.bnum, sev.button.press ? GLUT_DOWN : GLUT_UP));
break;
default:
break;
}
}
}
/*
The following code is part of libspnav, part of the spacenav project (spacenav.sf.net)
Copyright (C) 2007-2009 John Tsiombikas <nuclear@member.fsf.org>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <X11/Xlib.h>
#include <X11/Xutil.h>
static Window get_daemon_window(Display *dpy);
static int catch_badwin(Display *dpy, XErrorEvent *err);
static Display *dpy;
static Window app_win;
static Atom motion_event, button_press_event, button_release_event, command_event;
enum {
CMD_APP_WINDOW = 27695,
CMD_APP_SENS
};
#define IS_OPEN dpy
struct event_node {
spnav_event event;
struct event_node *next;
};
static int spnav_x11_open(Display *display, Window win)
{
if(IS_OPEN) {
return -1;
}
dpy = display;
motion_event = XInternAtom(dpy, "MotionEvent", True);
button_press_event = XInternAtom(dpy, "ButtonPressEvent", True);
button_release_event = XInternAtom(dpy, "ButtonReleaseEvent", True);
command_event = XInternAtom(dpy, "CommandEvent", True);
if(!motion_event || !button_press_event || !button_release_event || !command_event) {
dpy = 0;
return -1; /* daemon not started */
}
if(spnav_x11_window(win) == -1) {
dpy = 0;
return -1; /* daemon not started */
}
app_win = win;
return 0;
}
static int spnav_close(void)
{
if(dpy) {
spnav_x11_window(DefaultRootWindow(dpy));
app_win = 0;
dpy = 0;
return 0;
}
return -1;
}
static int spnav_x11_window(Window win)
{
int (*prev_xerr_handler)(Display*, XErrorEvent*);
XEvent xev;
Window daemon_win;
if(!IS_OPEN) {
return -1;
}
if(!(daemon_win = get_daemon_window(dpy))) {
return -1;
}
prev_xerr_handler = XSetErrorHandler(catch_badwin);
xev.type = ClientMessage;
xev.xclient.send_event = False;
xev.xclient.display = dpy;
xev.xclient.window = win;
xev.xclient.message_type = command_event;
xev.xclient.format = 16;
xev.xclient.data.s[0] = ((unsigned int)win & 0xffff0000) >> 16;
xev.xclient.data.s[1] = (unsigned int)win & 0xffff;
xev.xclient.data.s[2] = CMD_APP_WINDOW;
XSendEvent(dpy, daemon_win, False, 0, &xev);
XSync(dpy, False);
XSetErrorHandler(prev_xerr_handler);
return 0;
}
static int spnav_fd(void)
{
if(dpy) {
return ConnectionNumber(dpy);
}
return -1;
}
/*static int spnav_wait_event(spnav_event *event)
{
if(dpy) {
for(;;) {
XEvent xev;
XNextEvent(dpy, &xev);
if(spnav_x11_event(&xev, event) > 0) {
return event->type;
}
}
}
return 0;
}
static int spnav_poll_event(spnav_event *event)
{
if(dpy) {
if(XPending(dpy)) {
XEvent xev;
XNextEvent(dpy, &xev);
return spnav_x11_event(&xev, event);
}
}
return 0;
}*/
static Bool match_events(Display *dpy, XEvent *xev, char *arg)
{
int evtype = *(int*)arg;
if(xev->type != ClientMessage) {
return False;
}
if(xev->xclient.message_type == motion_event) {
return !evtype || evtype == SPNAV_EVENT_MOTION ? True : False;
}
if(xev->xclient.message_type == button_press_event ||
xev->xclient.message_type == button_release_event) {
return !evtype || evtype == SPNAV_EVENT_BUTTON ? True : False;
}
return False;
}
static int spnav_remove_events(int type)
{
int rm_count = 0;
if(dpy) {
XEvent xev;
while(XCheckIfEvent(dpy, &xev, match_events, (char*)&type)) {
rm_count++;
}
return rm_count;
}
return 0;
}
static int spnav_x11_event(const XEvent *xev, spnav_event *event)
{
int i;
int xmsg_type;
if(xev->type != ClientMessage) {
return 0;
}
xmsg_type = xev->xclient.message_type;
if(xmsg_type != motion_event && xmsg_type != button_press_event &&
xmsg_type != button_release_event) {
return 0;
}
if(xmsg_type == motion_event) {
event->type = SPNAV_EVENT_MOTION;
event->motion.data = &event->motion.x;
for(i=0; i<6; i++) {
event->motion.data[i] = xev->xclient.data.s[i + 2];
}
event->motion.period = xev->xclient.data.s[8];
} else {
event->type = SPNAV_EVENT_BUTTON;
event->button.press = xmsg_type == button_press_event ? 1 : 0;
event->button.bnum = xev->xclient.data.s[2];
}
return event->type;
}
static Window get_daemon_window(Display *dpy)
{
Window win, root_win;
XTextProperty wname;
Atom type;
int fmt;
unsigned long nitems, bytes_after;
unsigned char *prop;
root_win = DefaultRootWindow(dpy);
XGetWindowProperty(dpy, root_win, command_event, 0, 1, False, AnyPropertyType, &type, &fmt, &nitems, &bytes_after, &prop);
if(!prop) {
return 0;
}
win = *(Window*)prop;
XFree(prop);
if(!XGetWMName(dpy, win, &wname) || strcmp("Magellan Window", (char*)wname.value) != 0) {
return 0;
}
return win;
}
static int catch_badwin(Display *dpy, XErrorEvent *err)
{
char buf[256];
if(err->error_code == BadWindow) {
/* do nothing? */
} else {
XGetErrorText(dpy, err->error_code, buf, sizeof buf);
fprintf(stderr, "Caught unexpected X error: %s\n", buf);
}
return 0;
}