#include <GL/freeglut.h>\r
#include "freeglut_internal.h"\r
\r
+/* -- PRIVATE FUNCTIONS --------------------------------------------------- */\r
+\r
#if TARGET_HOST_POSIX_X11\r
#include <X11/Xlib.h>\r
\r
enum {\r
- SPNAV_EVENT_ANY, /* used by spnav_remove_events() */\r
+ SPNAV_EVENT_ANY, /* used by spnav_remove_events() */\r
SPNAV_EVENT_MOTION,\r
- SPNAV_EVENT_BUTTON /* includes both press and release */\r
+ SPNAV_EVENT_BUTTON /* includes both press and release */\r
};\r
\r
struct spnav_event_motion {\r
static SFG_Window *spnav_win;\r
#endif\r
\r
-static int sball_initialized;\r
+/* Flag telling whether we have a spaceball:\r
+ * 0 - haven't tried initializing\r
+ * 1 - have successfully initialized\r
+ * -1 - have tried to initialize but not succeeded\r
+ */\r
+static int sball_initialized = 0;\r
\r
\r
void fgInitialiseSpaceball(void)\r
{\r
- if(sball_initialized) {\r
+ if(sball_initialized != 0) {\r
return;\r
}\r
\r
#if TARGET_HOST_POSIX_X11\r
{\r
Window w;\r
- \r
- if(!fgStructure.CurrentWindow) {\r
- fgWarning("fgInitialiseSpaceball: no current window!\n");\r
+\r
+ if(!fgStructure.CurrentWindow)\r
+ {\r
+ sball_initialized = -1;\r
return;\r
- }\r
+ }\r
\r
w = fgStructure.CurrentWindow->Window.Handle;\r
- if(spnav_x11_open(fgDisplay.Display, w) == -1) {\r
+ if(spnav_x11_open(fgDisplay.Display, w) == -1)\r
+ {\r
+ sball_initialized = -1;\r
return;\r
}\r
}\r
\r
int fgHasSpaceball(void)\r
{\r
- if(!sball_initialized) {\r
+ if(sball_initialized == 0) {\r
fgInitialiseSpaceball();\r
- if(!sball_initialized) {\r
+ if(sball_initialized != 1) {\r
fgWarning("fgInitialiseSpaceball failed\n");\r
return 0;\r
}\r
\r
int fgSpaceballNumButtons(void)\r
{\r
- if(!sball_initialized) {\r
+ if(sball_initialized == 0) {\r
fgInitialiseSpaceball();\r
- if(!sball_initialized) {\r
+ if(sball_initialized != 1) {\r
fgWarning("fgInitialiseSpaceball failed\n");\r
return 0;\r
}\r
}\r
\r
#if TARGET_HOST_POSIX_X11\r
- return 2; /* TODO implement this properly */\r
+ return 2; /* TODO implement this properly */\r
#else\r
return 0;\r
#endif\r
\r
void fgSpaceballSetWindow(SFG_Window *window)\r
{\r
- if(!sball_initialized) {\r
+ if(sball_initialized == 0) {\r
fgInitialiseSpaceball();\r
- if(!sball_initialized) {\r
+ if(sball_initialized != 1) {\r
return;\r
}\r
}\r
{\r
spnav_event sev;\r
\r
- if(!sball_initialized) {\r
- fgInitialiseSpaceball();\r
- if(!sball_initialized) {\r
- return 0;\r
- }\r
+ if(spnav_win != fgStructure.CurrentWindow) {\r
+ /* this will also initialize spaceball if needed (first call) */\r
+ fgSpaceballSetWindow(fgStructure.CurrentWindow);\r
+ }\r
+\r
+ if(sball_initialized != 1) {\r
+ return 0;\r
}\r
\r
return spnav_x11_event(xev, &sev);\r
{\r
spnav_event sev;\r
\r
- if(!sball_initialized) {\r
+ if(sball_initialized == 0) {\r
fgInitialiseSpaceball();\r
- if(!sball_initialized) {\r
+ if(sball_initialized != 1) {\r
return;\r
}\r
}\r
INVOKE_WCB(*spnav_win, SpaceMotion, (sev.motion.x, sev.motion.y, sev.motion.z));\r
}\r
if(sev.motion.rx | sev.motion.ry | sev.motion.rz) {\r
- INVOKE_WCB(*spnav_win, SpaceRotation, (sev.motion.rx, sev.motion.ry, sev.motion.rz));\r
+ INVOKE_WCB(*spnav_win, SpaceRotation, (sev.motion.rx, sev.motion.ry, sev.motion.rz));\r
}\r
spnav_remove_events(SPNAV_EVENT_MOTION);\r
break;\r
#include <stdio.h>\r
#include <stdlib.h>\r
#include <string.h>\r
+\r
+#ifdef HAVE_ERRNO_H\r
#include <errno.h>\r
+#endif\r
\r
#include <X11/Xlib.h>\r
#include <X11/Xutil.h>\r
static Atom motion_event, button_press_event, button_release_event, command_event;\r
\r
enum {\r
- CMD_APP_WINDOW = 27695,\r
- CMD_APP_SENS\r
+ CMD_APP_WINDOW = 27695,\r
+ CMD_APP_SENS\r
};\r
\r
-#define IS_OPEN dpy\r
+#define IS_OPEN dpy\r
\r
struct event_node {\r
- spnav_event event;\r
- struct event_node *next;\r
+ spnav_event event;\r
+ struct event_node *next;\r
};\r
\r
static int spnav_x11_open(Display *display, Window win)\r
{\r
- if(IS_OPEN) {\r
- return -1;\r
- }\r
+ if(IS_OPEN) {\r
+ return -1;\r
+ }\r
\r
- dpy = display;\r
+ dpy = display;\r
\r
- motion_event = XInternAtom(dpy, "MotionEvent", True);\r
- button_press_event = XInternAtom(dpy, "ButtonPressEvent", True);\r
- button_release_event = XInternAtom(dpy, "ButtonReleaseEvent", True);\r
- command_event = XInternAtom(dpy, "CommandEvent", True);\r
+ motion_event = XInternAtom(dpy, "MotionEvent", True);\r
+ button_press_event = XInternAtom(dpy, "ButtonPressEvent", True);\r
+ button_release_event = XInternAtom(dpy, "ButtonReleaseEvent", True);\r
+ command_event = XInternAtom(dpy, "CommandEvent", True);\r
\r
- if(!motion_event || !button_press_event || !button_release_event || !command_event) {\r
- dpy = 0;\r
- return -1; /* daemon not started */\r
- }\r
+ if(!motion_event || !button_press_event || !button_release_event || !command_event) {\r
+ dpy = 0;\r
+ return -1; /* daemon not started */\r
+ }\r
\r
- if(spnav_x11_window(win) == -1) {\r
- dpy = 0;\r
- return -1; /* daemon not started */\r
- }\r
+ if(spnav_x11_window(win) == -1) {\r
+ dpy = 0;\r
+ return -1; /* daemon not started */\r
+ }\r
\r
- app_win = win;\r
- return 0;\r
+ app_win = win;\r
+ return 0;\r
}\r
\r
static int spnav_close(void)\r
{\r
- if(dpy) {\r
- spnav_x11_window(DefaultRootWindow(dpy));\r
- app_win = 0;\r
- dpy = 0;\r
- return 0;\r
- }\r
- return -1;\r
+ if(dpy) {\r
+ spnav_x11_window(DefaultRootWindow(dpy));\r
+ app_win = 0;\r
+ dpy = 0;\r
+ return 0;\r
+ }\r
+ return -1;\r
}\r
\r
static int spnav_x11_window(Window win)\r
{\r
- int (*prev_xerr_handler)(Display*, XErrorEvent*);\r
- XEvent xev;\r
- Window daemon_win;\r
-\r
- if(!IS_OPEN) {\r
- return -1;\r
- }\r
-\r
- if(!(daemon_win = get_daemon_window(dpy))) {\r
- return -1;\r
- }\r
-\r
- prev_xerr_handler = XSetErrorHandler(catch_badwin);\r
-\r
- xev.type = ClientMessage;\r
- xev.xclient.send_event = False;\r
- xev.xclient.display = dpy;\r
- xev.xclient.window = win;\r
- xev.xclient.message_type = command_event;\r
- xev.xclient.format = 16;\r
- xev.xclient.data.s[0] = ((unsigned int)win & 0xffff0000) >> 16;\r
- xev.xclient.data.s[1] = (unsigned int)win & 0xffff;\r
- xev.xclient.data.s[2] = CMD_APP_WINDOW;\r
-\r
- XSendEvent(dpy, daemon_win, False, 0, &xev);\r
- XSync(dpy, False);\r
-\r
- XSetErrorHandler(prev_xerr_handler);\r
- return 0;\r
+ int (*prev_xerr_handler)(Display*, XErrorEvent*);\r
+ XEvent xev;\r
+ Window daemon_win;\r
+\r
+ if(!IS_OPEN) {\r
+ return -1;\r
+ }\r
+\r
+ if(!(daemon_win = get_daemon_window(dpy))) {\r
+ return -1;\r
+ }\r
+\r
+ prev_xerr_handler = XSetErrorHandler(catch_badwin);\r
+\r
+ xev.type = ClientMessage;\r
+ xev.xclient.send_event = False;\r
+ xev.xclient.display = dpy;\r
+ xev.xclient.window = win;\r
+ xev.xclient.message_type = command_event;\r
+ xev.xclient.format = 16;\r
+ xev.xclient.data.s[0] = ((unsigned int)win & 0xffff0000) >> 16;\r
+ xev.xclient.data.s[1] = (unsigned int)win & 0xffff;\r
+ xev.xclient.data.s[2] = CMD_APP_WINDOW;\r
+\r
+ XSendEvent(dpy, daemon_win, False, 0, &xev);\r
+ XSync(dpy, False);\r
+\r
+ XSetErrorHandler(prev_xerr_handler);\r
+ return 0;\r
}\r
\r
static int spnav_fd(void)\r
{\r
- if(dpy) {\r
- return ConnectionNumber(dpy);\r
- }\r
- return -1;\r
+ if(dpy) {\r
+ return ConnectionNumber(dpy);\r
+ }\r
+ return -1;\r
}\r
\r
/*static int spnav_wait_event(spnav_event *event)\r
{\r
- if(dpy) {\r
- for(;;) {\r
- XEvent xev;\r
- XNextEvent(dpy, &xev);\r
-\r
- if(spnav_x11_event(&xev, event) > 0) {\r
- return event->type;\r
- }\r
- }\r
- }\r
- return 0;\r
+ if(dpy) {\r
+ for(;;) {\r
+ XEvent xev;\r
+ XNextEvent(dpy, &xev);\r
+\r
+ if(spnav_x11_event(&xev, event) > 0) {\r
+ return event->type;\r
+ }\r
+ }\r
+ }\r
+ return 0;\r
}\r
\r
static int spnav_poll_event(spnav_event *event)\r
{\r
- if(dpy) {\r
- if(XPending(dpy)) {\r
- XEvent xev;\r
- XNextEvent(dpy, &xev);\r
+ if(dpy) {\r
+ if(XPending(dpy)) {\r
+ XEvent xev;\r
+ XNextEvent(dpy, &xev);\r
\r
- return spnav_x11_event(&xev, event);\r
- }\r
- }\r
- return 0;\r
+ return spnav_x11_event(&xev, event);\r
+ }\r
+ }\r
+ return 0;\r
}*/\r
\r
static Bool match_events(Display *dpy, XEvent *xev, char *arg)\r
{\r
- int evtype = *(int*)arg;\r
-\r
- if(xev->type != ClientMessage) {\r
- return False;\r
- }\r
-\r
- if(xev->xclient.message_type == motion_event) {\r
- return !evtype || evtype == SPNAV_EVENT_MOTION ? True : False;\r
- }\r
- if(xev->xclient.message_type == button_press_event ||\r
- xev->xclient.message_type == button_release_event) {\r
- return !evtype || evtype == SPNAV_EVENT_BUTTON ? True : False;\r
- }\r
- return False;\r
+ int evtype = *(int*)arg;\r
+\r
+ if(xev->type != ClientMessage) {\r
+ return False;\r
+ }\r
+\r
+ if(xev->xclient.message_type == motion_event) {\r
+ return !evtype || evtype == SPNAV_EVENT_MOTION ? True : False;\r
+ }\r
+ if(xev->xclient.message_type == button_press_event ||\r
+ xev->xclient.message_type == button_release_event) {\r
+ return !evtype || evtype == SPNAV_EVENT_BUTTON ? True : False;\r
+ }\r
+ return False;\r
}\r
\r
static int spnav_remove_events(int type)\r
{\r
- int rm_count = 0;\r
+ int rm_count = 0;\r
\r
- if(dpy) {\r
- XEvent xev;\r
+ if(dpy) {\r
+ XEvent xev;\r
\r
- while(XCheckIfEvent(dpy, &xev, match_events, (char*)&type)) {\r
- rm_count++;\r
- }\r
- return rm_count;\r
- }\r
- return 0;\r
+ while(XCheckIfEvent(dpy, &xev, match_events, (char*)&type)) {\r
+ rm_count++;\r
+ }\r
+ return rm_count;\r
+ }\r
+ return 0;\r
}\r
\r
static int spnav_x11_event(const XEvent *xev, spnav_event *event)\r
{\r
- int i;\r
- int xmsg_type;\r
+ int i;\r
+ int xmsg_type;\r
\r
- if(xev->type != ClientMessage) {\r
- return 0;\r
- }\r
+ if(xev->type != ClientMessage) {\r
+ return 0;\r
+ }\r
\r
- xmsg_type = xev->xclient.message_type;\r
+ xmsg_type = xev->xclient.message_type;\r
\r
- if(xmsg_type != motion_event && xmsg_type != button_press_event &&\r
- xmsg_type != button_release_event) {\r
- return 0;\r
- }\r
+ if(xmsg_type != motion_event && xmsg_type != button_press_event &&\r
+ xmsg_type != button_release_event) {\r
+ return 0;\r
+ }\r
\r
- if(xmsg_type == motion_event) {\r
- event->type = SPNAV_EVENT_MOTION;\r
- event->motion.data = &event->motion.x;\r
+ if(xmsg_type == motion_event) {\r
+ event->type = SPNAV_EVENT_MOTION;\r
+ event->motion.data = &event->motion.x;\r
\r
- for(i=0; i<6; i++) {\r
- event->motion.data[i] = xev->xclient.data.s[i + 2];\r
- }\r
- event->motion.period = xev->xclient.data.s[8];\r
- } else {\r
- event->type = SPNAV_EVENT_BUTTON;\r
- event->button.press = xmsg_type == button_press_event ? 1 : 0;\r
- event->button.bnum = xev->xclient.data.s[2];\r
- }\r
- return event->type;\r
+ for(i=0; i<6; i++) {\r
+ event->motion.data[i] = xev->xclient.data.s[i + 2];\r
+ }\r
+ event->motion.period = xev->xclient.data.s[8];\r
+ } else {\r
+ event->type = SPNAV_EVENT_BUTTON;\r
+ event->button.press = xmsg_type == button_press_event ? 1 : 0;\r
+ event->button.bnum = xev->xclient.data.s[2];\r
+ }\r
+ return event->type;\r
}\r
\r
\r
static Window get_daemon_window(Display *dpy)\r
{\r
- Window win, root_win;\r
- XTextProperty wname;\r
- Atom type;\r
- int fmt;\r
- unsigned long nitems, bytes_after;\r
- unsigned char *prop;\r
+ Window win, root_win;\r
+ XTextProperty wname;\r
+ Atom type;\r
+ int fmt;\r
+ unsigned long nitems, bytes_after;\r
+ unsigned char *prop;\r
\r
- root_win = DefaultRootWindow(dpy);\r
+ root_win = DefaultRootWindow(dpy);\r
\r
- XGetWindowProperty(dpy, root_win, command_event, 0, 1, False, AnyPropertyType, &type, &fmt, &nitems, &bytes_after, &prop);\r
- if(!prop) {\r
- return 0;\r
- }\r
+ XGetWindowProperty(dpy, root_win, command_event, 0, 1, False, AnyPropertyType, &type, &fmt, &nitems, &bytes_after, &prop);\r
+ if(!prop) {\r
+ return 0;\r
+ }\r
\r
- win = *(Window*)prop;\r
- XFree(prop);\r
+ win = *(Window*)prop;\r
+ XFree(prop);\r
\r
- if(!XGetWMName(dpy, win, &wname) || strcmp("Magellan Window", (char*)wname.value) != 0) {\r
- return 0;\r
- }\r
+ if(!XGetWMName(dpy, win, &wname) || strcmp("Magellan Window", (char*)wname.value) != 0) {\r
+ return 0;\r
+ }\r
\r
- return win;\r
+ return win;\r
}\r
\r
static int catch_badwin(Display *dpy, XErrorEvent *err)\r
{\r
- char buf[256];\r
-\r
- if(err->error_code == BadWindow) {\r
- /* do nothing? */\r
- } else {\r
- XGetErrorText(dpy, err->error_code, buf, sizeof buf);\r
- fprintf(stderr, "Caught unexpected X error: %s\n", buf);\r
- }\r
- return 0;\r
+ char buf[256];\r
+\r
+ if(err->error_code == BadWindow) {\r
+ /* do nothing? */\r
+ } else {\r
+ XGetErrorText(dpy, err->error_code, buf, sizeof buf);\r
+ fprintf(stderr, "Caught unexpected X error: %s\n", buf);\r
+ }\r
+ return 0;\r
}\r
\r
-#endif /* TARGET_HOST_POSIX_X11 */\r
+#endif /* TARGET_HOST_POSIX_X11 */\r