From 59246a0992b56912619b61de072c31382c9f5400 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Tue, 3 Jul 2007 04:55:59 +0000 Subject: [PATCH] initial import of libspnav git-svn-id: svn+ssh://svn.code.sf.net/p/spacenav/code/libspnav@2 ef983eb1-d774-4af8-acfd-baaf7b16a646 --- .spnav.c.swp | Bin 0 -> 24576 bytes .spnav.h.swp | Bin 0 -> 12288 bytes .spnav_magellan.c.swp | Bin 0 -> 16384 bytes .spnav_magellan.h.swp | Bin 0 -> 12288 bytes COPYING | 674 ++++++++++++++++++++++++++++++++++++++++++ Makefile.in | 40 +++ README | 1 + configure | 92 ++++++ spnav.c | 371 +++++++++++++++++++++++ spnav.h | 81 +++++ spnav_config.h | 6 + spnav_magellan.c | 88 ++++++ spnav_magellan.h | 60 ++++ 13 files changed, 1413 insertions(+) create mode 100644 .spnav.c.swp create mode 100644 .spnav.h.swp create mode 100644 .spnav_magellan.c.swp create mode 100644 .spnav_magellan.h.swp create mode 100644 COPYING create mode 100644 Makefile.in create mode 100644 README create mode 100755 configure create mode 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile.in b/Makefile.in new file mode 100644 index 0000000..7aa93c1 --- /dev/null +++ b/Makefile.in @@ -0,0 +1,40 @@ + +obj = spnav.o $(magellan_obj) +hdr = spnav.h spnav_magellan.h spnav_config.h +lib_a = libspnav.a +lib_so = libspnav.so + +CC = gcc +AR = ar +CFLAGS = $(opt) $(dbg) -std=c89 -fpic -pedantic -Wall -Wno-strict-aliasing -g -I. +LDFLAGS = $(xlib) + +.PHONY: all +all: $(lib_a) $(lib_so) + +$(lib_a): $(obj) + $(AR) rcs $@ $(obj) + +$(lib_so): $(obj) + $(CC) $(CFLAGS) -shared -o $@ $(obj) + +.PHONY: clean +clean: + rm -f $(obj) + +.PHONY: cleandist +distclean: + rm -f $(obj) $(lib_a) $(lib_so) Makefile + +.PHONY: install +install: $(lib_a) $(lib_so) + cp $(lib_a) $(PREFIX)/lib/$(lib_a) + cp $(lib_so) $(PREFIX)/lib/$(lib_so) + cp $(hdr) $(PREFIX)/include/ + +.PHONY: uninstall +uninstall: + rm -f $(PREFIX)/lib/$(lib_a) + rm -f $(PREFIX)/lib/$(lib_so) + for i in $(hdr); do rm -f $(PREFIX)/include/$$i; done + diff --git a/README b/README new file mode 100644 index 0000000..0b2e4fc --- /dev/null +++ b/README @@ -0,0 +1 @@ +to be written... diff --git a/configure b/configure new file mode 100755 index 0000000..16c469b --- /dev/null +++ b/configure @@ -0,0 +1,92 @@ +#!/bin/sh + +echo 'configuring spacenav library...' + +PREFIX=/usr/local +OPT=yes +DBG=yes +X11=yes + +for arg; do + case "$arg" in + --prefix=*) + value=`echo $arg | sed 's/--prefix=//'` + PREFIX=${value:-$prefix} + ;; + + --enable-opt) + OPT=yes;; + --disable-opt) + OPT=no;; + + --enable-debug) + DBG=yes;; + --disable-debug) + DBG=no;; + + --enable-x11) + X11=yes;; + --disable-x11) + X11=no;; + + --help) + echo 'usage: ./configure [options]' + echo 'options:' + echo ' --prefix=: installation path (default: /usr/local)' + echo ' --enable-x11: enable X11 communication mode (default)' + echo ' --disable-x11: disable X11 communication mode' + echo ' --enable-opt: enable speed optimizations (default)' + echo ' --disable-opt: disable speed optimizations' + echo ' --enable-debug: include debugging symbols (default)' + echo ' --disable-debug: do not include debugging symbols' + echo 'all invalid options are silently ignored' + exit 0 + ;; + esac +done + +echo " prefix: $PREFIX" +echo " optimize for speed: $OPT" +echo " include debugging symbols: $DBG" +echo " x11 communication method: $X11" +echo "" + +if [ "$X11" = "no" ]; then + echo "WARNING: you have disabled the X11 interface, the resulting library won't be compatible with the proprietary 3Dconnexion daemon (3dxserv)!" + echo "" +fi + +# create makefile +echo 'creating makefile ...' +echo "PREFIX = $PREFIX" >Makefile + +if [ "$DBG" = 'yes' ]; then + echo 'dbg = -g' >>Makefile +fi + +if [ "$OPT" = 'yes' ]; then + echo 'opt = -O3' >>Makefile +fi + +if [ "$X11" = 'yes' ]; then + echo 'magellan_obj = spnav_magellan.o' >>Makefile + echo 'xlib = -lX11' >>Makefile +fi + +cat Makefile.in >>Makefile + +# create spnav_config.h +echo 'creating spnav_config.h ...' +echo '#ifndef SPNAV_CONFIG_H_' >spnav_config.h +echo '#define SPNAV_CONFIG_H_' >>spnav_config.h +echo '' >>spnav_config.h +if [ "$X11" = 'yes' ]; then + echo '#define USE_X11' >>spnav_config.h + echo '' >>spnav_config.h +fi +echo '#endif /* SPNAV_CONFIG_H_ */' >>spnav_config.h + +#done +echo '' +echo 'Done. You can now type make (or gmake) to compile libspnav.' +echo '' diff --git a/spnav.c b/spnav.c new file mode 100644 index 0000000..0b07b76 --- /dev/null +++ b/spnav.c @@ -0,0 +1,371 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include "spnav.h" + +#ifdef USE_X11 +#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 || sock) +#else +#define IS_OPEN (sock) +#endif + +static int sock; + +int spnav_open(void) +{ + int s; + struct sockaddr_un addr; + + if(IS_OPEN) { + return -1; + } + + if((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) { + return -1; + } + + memset(&addr, 0, sizeof addr); + addr.sun_family = AF_UNIX; + strcpy(addr.sun_path, "/tmp/spacenav_usock"); + + if(connect(s, (struct sockaddr*)&addr, sizeof addr) == -1) { + return -1; + } + + sock = s; + return 0; +} + +#ifdef USE_X11 +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; +} +#endif + +int spnav_close(void) +{ + if(!IS_OPEN) { + return -1; + } + + if(sock) { + close(sock); + sock = 0; + return 0; + } + +#ifdef USE_X11 + if(dpy) { + spnav_x11_window(DefaultRootWindow(dpy)); + app_win = 0; + dpy = 0; + return 0; + } +#endif + + return -1; +} + + +#ifdef USE_X11 +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 x11_sensitivity(double sens) +{ + int (*prev_xerr_handler)(Display*, XErrorEvent*); + XEvent xev; + Window daemon_win; + float fsens; + unsigned int isens; + + if(!(daemon_win = get_daemon_window(dpy))) { + return -1; + } + + fsens = sens; + isens = *(unsigned int*)&fsens; + + prev_xerr_handler = XSetErrorHandler(catch_badwin); + + xev.type = ClientMessage; + xev.xclient.send_event = False; + xev.xclient.display = dpy; + xev.xclient.window = app_win; + xev.xclient.message_type = command_event; + xev.xclient.format = 16; + xev.xclient.data.s[0] = isens & 0xffff; + xev.xclient.data.s[1] = (isens & 0xffff0000) >> 16; + xev.xclient.data.s[2] = CMD_APP_SENS; + + XSendEvent(dpy, daemon_win, False, 0, &xev); + XSync(dpy, False); + + XSetErrorHandler(prev_xerr_handler); + return 0; +} +#endif + +int spnav_sensitivity(double sens) +{ +#ifdef USE_X11 + if(dpy) { + return x11_sensitivity(sens); + } +#endif + + if(sock) { + ssize_t bytes; + float fval = sens; + + while((bytes = write(sock, &fval, sizeof fval)) <= 0 && errno == EINTR); + if(bytes <= 0) { + return -1; + } + return 0; + } + + return -1; +} + +int spnav_fd(void) +{ +#ifdef USE_X11 + if(dpy) { + return ConnectionNumber(dpy); + } +#endif + + return sock ? sock : -1; +} + + +int spnav_wait_event(spnav_event *event) +{ +#ifdef USE_X11 + if(dpy) { + for(;;) { + int evtype; + XEvent xev; + XNextEvent(dpy, &xev); + + if((evtype = spnav_x11_event(&xev, event)) > 0) { + return evtype; + } + } + } +#endif + + if(sock) { + /* TODO implement event reception from the UNIX socket */ + } + return 0; +} + +int spnav_poll_event(spnav_event *event) +{ +#ifdef USE_X11 + if(dpy) { + if(XPending(dpy)) { + XEvent xev; + XNextEvent(dpy, &xev); + + return spnav_x11_event(&xev, event); + } + return 0; + } +#endif + + if(sock) { + /* TODO implement event reception from the UNIX socket */ + } + return 0; +} + +#ifdef USE_X11 +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; +} +#endif + +int spnav_remove_events(int type) +{ + int rm_count = 0; + +#ifdef USE_X11 + if(dpy) { + XEvent xev; + + while(XCheckIfEvent(dpy, &xev, match_events, (char*)&type)) { + rm_count++; + } + return rm_count; + } +#endif + + if(sock) { + /* TODO */ + } + return 0; +} + +#ifdef USE_X11 +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; +} + +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 diff --git a/spnav.h b/spnav.h new file mode 100644 index 0000000..2599638 --- /dev/null +++ b/spnav.h @@ -0,0 +1,81 @@ +#ifndef SPACENAV_H_ +#define SPACENAV_H_ + +#include + +#ifdef USE_X11 +#include +#endif + +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; + + +#ifdef __cplusplus +extern "C" { +#endif + +int spnav_open(void); +int spnav_close(void); + +/* Retrieves the file descriptor used for communication with the daemon, for + * use with select() by the application, if so required. + * If the X11 mode is used, the socket used to communicate with the X server is + * returned, so the result of this function is always reliable. + */ +int spnav_fd(void); + +int spnav_sensitivity(double sens); + +/* blocks waiting for space-nav events. returns 0 if an error occurs */ +int spnav_wait_event(spnav_event *event); + +/* checks the availability of space-nav events (non-blocking) + * returns the event type if available, or 0 otherwise. + */ +int spnav_poll_event(spnav_event *event); + +/* Removes any pending events from the specified type, or all pending events + * events if the type argument is SPNAV_EVENT_ANY. Returns the number of + * removed events. + */ +int spnav_remove_events(int type); + + + + +#ifdef USE_X11 +int spnav_x11_open(Display *dpy, Window win); +int spnav_x11_window(Window win); + +int spnav_x11_event(const XEvent *xev, spnav_event *event); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* SPACENAV_H_ */ diff --git a/spnav_config.h b/spnav_config.h new file mode 100644 index 0000000..6c29871 --- /dev/null +++ b/spnav_config.h @@ -0,0 +1,6 @@ +#ifndef SPNAV_CONFIG_H_ +#define SPNAV_CONFIG_H_ + +#define USE_X11 + +#endif /* SPNAV_CONFIG_H_ */ diff --git a/spnav_magellan.c b/spnav_magellan.c new file mode 100644 index 0000000..3148f86 --- /dev/null +++ b/spnav_magellan.c @@ -0,0 +1,88 @@ +#include "spnav_magellan.h" +#include "spnav.h" + +int MagellanInit(Display *dpy, Window win) +{ + return spnav_x11_open(dpy, win) == -1 ? 0 : 1; +} + +int MagellanClose(Display *dpy) +{ + return spnav_close() == -1 ? 0 : 1; +} + +int MagellanSetWindow(Display *dpy, Window win) +{ + return spnav_x11_window(win) == -1 ? 0 : 1; +} + +int MagellanApplicationSensitivity(Display *dpy, double sens) +{ + return spnav_sensitivity(sens) == -1 ? 0 : 1; +} + + +int MagellanInputEvent(Display *dpy, XEvent *xev, MagellanIntEvent *mev) +{ + int i; + spnav_event event; + + if(!spnav_x11_event(xev, &event)) { + return 0; + } + + if(event.type == SPNAV_EVENT_MOTION) { + mev->type = MagellanInputMotionEvent; + + for(i=0; i<6; i++) { + mev->u.data[i] = event.motion.data[i]; + } + mev->u.data[6] = event.motion.period * 1000 / 60; + } else { + mev->type = event.button.press ? MagellanInputButtonEvent : MagellanInputButtonReleaseEvent; + mev->u.button = event.button.bnum; + } + + return mev->type; +} + + +int MagellanTranslateEvent(Display *dpy, XEvent *xev, MagellanFloatEvent *mev, double tscale, double rscale) +{ + int i; + spnav_event event; + + if(!spnav_x11_event(xev, &event)) { + return 0; + } + + if(event.type == SPNAV_EVENT_MOTION) { + mev->MagellanType = MagellanInputMotionEvent; + + for(i=0; i<6; i++) { + mev->MagellanData[i] = (double)event.motion.data[i] * (i < 3 ? tscale : rscale); + } + mev->MagellanPeriod = event.motion.period; + } else { + mev->MagellanType = event.button.press ? MagellanInputButtonEvent : MagellanInputButtonReleaseEvent; + mev->MagellanButton = event.button.bnum; + } + + return mev->MagellanType; +} + +int MagellanRemoveMotionEvents(Display *dpy) +{ + return spnav_remove_events(SPNAV_EVENT_MOTION); +} + + +int MagellanRotationMatrix(double mat[4][4], double x, double y, double z) +{ + return 0; /* TODO */ +} + +int MagellanMultiplicationMatrix(double mat_a[4][4], double mat_b[4][4], double mat_c[4][4]) +{ + return 0; /* TODO */ +} diff --git a/spnav_magellan.h b/spnav_magellan.h new file mode 100644 index 0000000..18832bc --- /dev/null +++ b/spnav_magellan.h @@ -0,0 +1,60 @@ +#ifndef SPACENAV_MAGELLAN_H_ +#define SPACENAV_MAGELLAN_H_ + +#include + +enum { + MagellanInputMotionEvent = 1, + MagellanInputButtonEvent = 2, + MagellanInputButtonReleaseEvent = 3 +}; + +enum { + MagellanX, + MagellanY, + MagellanZ, + MagellanA, + MagellanB, + MagellanC +}; + +typedef union { + int data[7]; + int button; +} MagellanIntUnion; + +typedef struct { + int type; + MagellanIntUnion u; +} MagellanIntEvent; + +typedef struct { + int MagellanType; + int MagellanButton; + double MagellanData[6]; + int MagellanPeriod; +} MagellanFloatEvent; + + +#ifdef __cplusplus +extern "C" { +#endif + +int MagellanInit(Display *dpy, Window win); +int MagellanClose(Display *dpy); + +int MagellanSetWindow(Display *dpy, Window win); +int MagellanApplicationSensitivity(Display *dpy, double sens); + +int MagellanInputEvent(Display *dpy, XEvent *event, MagellanIntEvent *mag_event); +int MagellanTranslateEvent(Display *dpy, XEvent *event, MagellanFloatEvent *mag_event, double tscale, double rscale); +int MagellanRemoveMotionEvents(Display *dpy); + +int MagellanRotationMatrix(double mat[4][4], double x, double y, double z); +int MagellanMultiplicationMatrix(double mat_a[4][4], double mat_b[4][4], double mat_c[4][4]); + +#ifdef __cplusplus +} +#endif + +#endif /* SPACENAV_MAGELLAN_H_ */