diff options
Diffstat (limited to 'Eyes.c')
| -rw-r--r-- | Eyes.c | 113 |
1 files changed, 107 insertions, 6 deletions
@@ -48,6 +48,7 @@ from the X Consortium. # include <X11/extensions/shape.h> # include <X11/Xlibint.h> # include <stdlib.h> +# include <X11/extensions/XInput2.h> #if (defined(SVR4) || defined(SYSV) && defined(i386)) extern double hypot(double, double); @@ -243,6 +244,97 @@ static void EyesGeneric(Widget w, XtPointer closure, XEvent *event, Boolean *con draw_it_core((EyesWidget) w); } +struct root_listen_list { + struct root_listen_list *next; + Widget widget; +}; + +static struct root_listen_list *root_listen_list; + +static Boolean xi2_dispatcher(XEvent *event) { + struct root_listen_list *rll; + Boolean was_dispatched = False; + + for (rll = root_listen_list; rll; rll = rll->next) { + if (XtDisplay(rll->widget) == event->xany.display) { + XtDispatchEventToWidget(rll->widget, event); + was_dispatched = True; + } + } + return was_dispatched; +} + +static void select_xi2_events(Widget w) +{ + XIEventMask evmasks[1]; + unsigned char mask1[(XI_LASTEVENT + 7)/8]; + unsigned char mask2[(XI_LASTEVENT + 7)/8]; + + memset(mask1, 0, sizeof(mask1)); + + /* select for button and key events from all master devices */ + XISetMask(mask1, XI_RawMotion); + + evmasks[0].deviceid = XIAllMasterDevices; + evmasks[0].mask_len = sizeof(mask1); + evmasks[0].mask = mask1; + + XISelectEvents(XtDisplay(w), + RootWindowOfScreen(XtScreen(w)), + evmasks, 1); + XtSetEventDispatcher(XtDisplay(w), + GenericEvent, + xi2_dispatcher); +} + +static Boolean xi2_add_root_listener(Widget widget) +{ + struct root_listen_list *rll = malloc (sizeof (struct root_listen_list)); + + if (!rll) + return False; + rll->widget = widget; + rll->next = root_listen_list; + if (!root_listen_list) + select_xi2_events(widget); + root_listen_list = rll; + XtInsertEventTypeHandler(widget, GenericEvent, NULL, EyesGeneric, NULL, XtListHead); + return True; +} + +static void xi2_remove_root_listener(Widget widget) +{ + struct root_listen_list *rll, **prev; + + for (prev = &root_listen_list; (rll = *prev) != NULL; prev = &rll->next) { + if (rll->widget == widget) { + *prev = rll->next; + free(rll); + break; + } + } +} + +/* Return 1 if XI2 is available, 0 otherwise */ +static int has_xi2(Display *dpy) +{ + int major, minor; + int rc; + + /* We need at least XI 2.0 */ + major = 2; + minor = 0; + + rc = XIQueryVersion(dpy, &major, &minor); + if (rc == BadRequest) { + return 0; + } else if (rc != Success) { + return 0; + } + return 1; +} + + /* ARGSUSED */ static void Initialize ( Widget greq, @@ -312,6 +404,8 @@ static void Initialize ( w->eyes.shape_mask = 0; w->eyes.gc[PART_SHAPE] = NULL; + w->eyes.has_xi2 = has_xi2(XtDisplay(w)); + #ifdef XRENDER for (i = 0; i < PART_SHAPE; i ++) { XColor c; @@ -629,9 +723,11 @@ static void draw_it ( if (XtIsRealized((Widget)w)) { draw_it_core(w); } - w->eyes.interval_id = - XtAppAddTimeOut(XtWidgetToApplicationContext((Widget) w), - delays[w->eyes.update], draw_it, (XtPointer)w); + if (!w->eyes.has_xi2) { + w->eyes.interval_id = + XtAppAddTimeOut(XtWidgetToApplicationContext((Widget) w), + delays[w->eyes.update], draw_it, (XtPointer)w); + } } /* draw_it */ static void Resize (Widget gw) @@ -718,9 +814,13 @@ static void Realize ( XtCreateWindow( gw, (unsigned)InputOutput, (Visual *)CopyFromParent, *valueMask, attrs ); Resize (gw); - w->eyes.interval_id = - XtAppAddTimeOut(XtWidgetToApplicationContext(gw), - delays[w->eyes.update], draw_it, (XtPointer)gw); + + if (w->eyes.has_xi2) + xi2_add_root_listener(gw); + else + w->eyes.interval_id = + XtAppAddTimeOut(XtWidgetToApplicationContext(gw), + delays[w->eyes.update], draw_it, (XtPointer)gw); } static void Destroy (Widget gw) @@ -732,6 +832,7 @@ static void Destroy (Widget gw) XtRemoveTimeOut (w->eyes.interval_id); for (i = 0; i < PART_MAX; i ++) XtReleaseGC(gw, w->eyes.gc[i]); + xi2_remove_root_listener(gw); #ifdef XRENDER if (w->eyes.picture) XRenderFreePicture (XtDisplay(w), w->eyes.picture); |