From: John F. Fay Date: Sun, 5 Feb 2012 04:04:28 +0000 (+0000) Subject: Splitting the X11-specific "freeglut_spaceball.c" code into its own file X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=commitdiff_plain;h=1a682d50f927ef686f113678cd38cec92ae3d996;hp=a10bb649d0d076a2582b9096fde658f0cbe0b1d5;p=freeglut Splitting the X11-specific "freeglut_spaceball.c" code into its own file git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@1057 7f0cb862-5218-0410-a997-914c9d46530a --- diff --git a/src/Common/freeglut_spaceball.c b/src/Common/freeglut_spaceball.c index 4901e79..6f8feba 100644 --- a/src/Common/freeglut_spaceball.c +++ b/src/Common/freeglut_spaceball.c @@ -12,53 +12,14 @@ /* -- PRIVATE FUNCTIONS --------------------------------------------------- */ -#if TARGET_HOST_POSIX_X11 -#include +extern void fgPlatformInitializeSpaceball(void); +extern void fgPlatformSpaceballClose(void); +extern int fgPlatformHasSpaceball(void); +extern int fgPlatformSpaceballNumButtons(void); +extern void fgPlatformSpaceballSetWindow(SFG_Window *window); -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; -#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 -} - - -#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 - -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 -#include -#include - -#ifdef HAVE_ERRNO_H -#include -#endif - -#include -#include - -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; + fgPlatformSpaceballSetWindow(window); } -#endif /* TARGET_HOST_POSIX_X11 */ diff --git a/src/mswin/freeglut_spaceball_mswin.c b/src/mswin/freeglut_spaceball_mswin.c index e69de29..72a8d8c 100644 --- a/src/mswin/freeglut_spaceball_mswin.c +++ b/src/mswin/freeglut_spaceball_mswin.c @@ -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 + * 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 +#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; +} diff --git a/src/x11/freeglut_spaceball_x11.c b/src/x11/freeglut_spaceball_x11.c index e69de29..0e29b3f 100644 --- a/src/x11/freeglut_spaceball_x11.c +++ b/src/x11/freeglut_spaceball_x11.c @@ -0,0 +1,415 @@ +/* Spaceball support for Linux. + * Written by John Tsiombikas + * Copied for Platform code by Evan Felix + * 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 +#include "freeglut_internal.h" + +#include + +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 + +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 +#include +#include + +#ifdef HAVE_ERRNO_H +#include +#endif + +#include +#include + +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; +} +