X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fx11%2Ffreeglut_spaceball_x11.c;h=0e29b3f89af241f9b816bc82b3ca94288ef1b233;hb=1a682d50f927ef686f113678cd38cec92ae3d996;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=a10bb649d0d076a2582b9096fde658f0cbe0b1d5;p=freeglut 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; +} +