/* GDK - The GIMP Drawing Kit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "gdk.h" #include "gdkprivate.h" #include "gdkx.h" #include "gdkkeysyms.h" #if HAVE_CONFIG_H # include # if STDC_HEADERS # include # endif #endif #include "gdkinputprivate.h" typedef struct _GdkIOClosure GdkIOClosure; typedef struct _GdkEventPrivate GdkEventPrivate; #define DOUBLE_CLICK_TIME 250 #define TRIPLE_CLICK_TIME 500 #define DOUBLE_CLICK_DIST 5 #define TRIPLE_CLICK_DIST 5 typedef enum { /* Following flag is set for events on the event queue during * translation and cleared afterwards. */ GDK_EVENT_PENDING = 1 << 0 } GdkEventFlags; struct _GdkIOClosure { GdkInputFunction function; GdkInputCondition condition; GdkDestroyNotify notify; gpointer data; }; struct _GdkEventPrivate { GdkEvent event; guint flags; }; /* * Private function declarations */ static gint gdk_event_apply_filters (XEvent *xevent, GdkEvent *event, GList *filters); static gint gdk_event_translate (GdkEvent *event, XEvent *xevent); #if 0 static Bool gdk_event_get_type (Display *display, XEvent *xevent, XPointer arg); #endif static gboolean gdk_event_prepare (gpointer source_data, GTimeVal *current_time, gint *timeout, gpointer user_data); static gboolean gdk_event_check (gpointer source_data, GTimeVal *current_time, gpointer user_data); static gboolean gdk_event_dispatch (gpointer source_data, GTimeVal *current_time, gpointer user_data); GdkFilterReturn gdk_wm_protocols_filter (GdkXEvent *xev, GdkEvent *event, gpointer data); /* Private variable declarations */ static int connection_number = 0; /* The file descriptor number of our * connection to the X server. This * is used so that we may determine * when events are pending by using * the "select" system call. */ static GList *client_filters; /* Filters for client messages */ static GSourceFuncs event_funcs = { gdk_event_prepare, gdk_event_check, gdk_event_dispatch, (GDestroyNotify)g_free }; GPollFD event_poll_fd; /********************************************* * Functions for maintaining the event queue * *********************************************/ void gdk_events_init (void) { connection_number = ConnectionNumber (gdk_display); GDK_NOTE (MISC, g_message ("connection number: %d", connection_number)); g_source_add (GDK_PRIORITY_EVENTS, TRUE, &event_funcs, NULL, NULL, NULL); event_poll_fd.fd = connection_number; event_poll_fd.events = G_IO_IN; g_main_add_poll (&event_poll_fd, GDK_PRIORITY_EVENTS); gdk_add_client_message_filter (gdk_wm_protocols, gdk_wm_protocols_filter, NULL); } /* *-------------------------------------------------------------- * gdk_events_pending * * Returns if events are pending on the queue. * * Arguments: * * Results: * Returns TRUE if events are pending * * Side effects: * *-------------------------------------------------------------- */ gboolean gdk_events_pending (void) { return (gdk_event_queue_find_first() || XPending (gdk_display)); } /* *-------------------------------------------------------------- * gdk_event_get_graphics_expose * * Waits for a GraphicsExpose or NoExpose event * * Arguments: * * Results: * For GraphicsExpose events, returns a pointer to the event * converted into a GdkEvent Otherwise, returns NULL. * * Side effects: * *-------------------------------------------------------------- */ static Bool graphics_expose_predicate (Display *display, XEvent *xevent, XPointer arg) { if (xevent->xany.window == GDK_DRAWABLE_XID (arg) && (xevent->xany.type == GraphicsExpose || xevent->xany.type == NoExpose)) return True; else return False; } GdkEvent* gdk_event_get_graphics_expose (GdkWindow *window) { XEvent xevent; GdkEvent *event; g_return_val_if_fail (window != NULL, NULL); XIfEvent (gdk_display, &xevent, graphics_expose_predicate, (XPointer) window); if (xevent.xany.type == GraphicsExpose) { event = gdk_event_new (); if (gdk_event_translate (event, &xevent)) return event; else gdk_event_free (event); } return NULL; } /************************ * Exposure compression * ************************/ /* * The following implements simple exposure compression. It is * modelled after the way Xt does exposure compression - in * particular compress_expose = XtExposeCompressMultiple. * It compress consecutive sequences of exposure events, * but not sequences that cross other events. (This is because * if it crosses a ConfigureNotify, we could screw up and * mistakenly compress the exposures generated for the new * size - could we just check for ConfigureNotify?) * * Xt compresses to a region / bounding rectangle, we compress * to two rectangles, and try find the two rectangles of minimal * area for this - this is supposed to handle the typical * L-shaped regions generated by OpaqueMove. */ /* Given three rectangles, find the two rectangles that cover * them with the smallest area. */ static void gdk_add_rect_to_rects (GdkRectangle *rect1, GdkRectangle *rect2, GdkRectangle *new_rect) { GdkRectangle t1, t2, t3; gint size1, size2, size3; gdk_rectangle_union (rect1, rect2, &t1); gdk_rectangle_union (rect1, new_rect, &t2); gdk_rectangle_union (rect2, new_rect, &t3); size1 = t1.width * t1.height + new_rect->width * new_rect->height; size2 = t2.width * t2.height + rect2->width * rect2->height; size3 = t1.width * t1.height + rect1->width * rect1->height; if (size1 < size2) { if (size1 < size3) { *rect1 = t1; *rect2 = *new_rect; } else *rect2 = t3; } else { if (size2 < size3) *rect1 = t2; else *rect2 = t3; } } typedef struct _GdkExposeInfo GdkExposeInfo; struct _GdkExposeInfo { Window window; gboolean seen_nonmatching; }; static Bool expose_predicate (Display *display, XEvent *xevent, XPointer arg) { GdkExposeInfo *info = (GdkExposeInfo*) arg; /* Compressing across GravityNotify events is safe, because * we completely ignore them, so they can't change what * we are going to draw. Compressing across GravityNotify * events is necessay because during window-unshading animation * we'll get a whole bunch of them interspersed with * expose events. */ if (xevent->xany.type != Expose && xevent->xany.type != GravityNotify) { info->seen_nonmatching = TRUE; } if (info->seen_nonmatching || xevent->xany.type != Expose || xevent->xany.window != info->window) return FALSE; else return TRUE; } void gdk_compress_exposures (XEvent *xevent, GdkWindow *window) { gint nrects = 1; gint count = 0; GdkRectangle rect1; GdkRectangle rect2; GdkRectangle tmp_rect; XEvent tmp_event; GdkFilterReturn result; GdkExposeInfo info; GdkEvent event; info.window = xevent->xany.window; info.seen_nonmatching = FALSE; rect1.x = xevent->xexpose.x; rect1.y = xevent->xexpose.y; rect1.width = xevent->xexpose.width; rect1.height = xevent->xexpose.height; event.any.type = GDK_EXPOSE; event.any.window = None; event.any.send_event = FALSE; while (1) { if (count == 0) { if (!XCheckIfEvent (gdk_display, &tmp_event, expose_predicate, (XPointer)&info)) break; } else XIfEvent (gdk_display, &tmp_event, expose_predicate, (XPointer)&info); event.any.window = window; /* We apply filters here, and if it was filtered, completely * ignore the return */ result = gdk_event_apply_filters (xevent, &event, window ? ((GdkWindowPrivate *)window)->filters : gdk_default_filters); if (result != GDK_FILTER_CONTINUE) { if (result == GDK_FILTER_TRANSLATE) gdk_event_put (&event); continue; } if (nrects == 1) { rect2.x = tmp_event.xexpose.x; rect2.y = tmp_event.xexpose.y; rect2.width = tmp_event.xexpose.width; rect2.height = tmp_event.xexpose.height; nrects++; } else { tmp_rect.x = tmp_event.xexpose.x; tmp_rect.y = tmp_event.xexpose.y; tmp_rect.width = tmp_event.xexpose.width; tmp_rect.height = tmp_event.xexpose.height; gdk_add_rect_to_rects (&rect1, &rect2, &tmp_rect); } count = tmp_event.xexpose.count; } if (nrects == 2) { gdk_rectangle_union (&rect1, &rect2, &tmp_rect); if ((tmp_rect.width * tmp_rect.height) < 2 * (rect1.height * rect1.width + rect2.height * rect2.width)) { rect1 = tmp_rect; nrects = 1; } } if (nrects == 2) { event.expose.type = GDK_EXPOSE; event.expose.window = window; event.expose.area.x = rect2.x; event.expose.area.y = rect2.y; event.expose.area.width = rect2.width; event.expose.area.height = rect2.height; event.expose.count = 0; gdk_event_put (&event); } xevent->xexpose.count = nrects - 1; xevent->xexpose.x = rect1.x; xevent->xexpose.y = rect1.y; xevent->xexpose.width = rect1.width; xevent->xexpose.height = rect1.height; } static gint gdk_event_apply_filters (XEvent *xevent, GdkEvent *event, GList *filters) { GList *tmp_list; GdkFilterReturn result; tmp_list = filters; while (tmp_list) { GdkEventFilter *filter = (GdkEventFilter*) tmp_list->data; tmp_list = tmp_list->next; result = filter->function (xevent, event, filter->data); if (result != GDK_FILTER_CONTINUE) return result; } return GDK_FILTER_CONTINUE; } void gdk_add_client_message_filter (GdkAtom message_type, GdkFilterFunc func, gpointer data) { GdkClientFilter *filter = g_new (GdkClientFilter, 1); filter->type = message_type; filter->function = func; filter->data = data; client_filters = g_list_prepend (client_filters, filter); } static gint gdk_event_translate (GdkEvent *event, XEvent *xevent) { GdkWindow *window; GdkWindowPrivate *window_private; static XComposeStatus compose; KeySym keysym; int charcount; #ifdef USE_XIM static gchar* buf = NULL; static gint buf_len= 0; #else char buf[16]; #endif gint return_val; return_val = FALSE; /* Find the GdkWindow that this event occurred in. * * We handle events with window=None * specially - they are generated by XFree86's XInput under * some circumstances. */ if ((xevent->xany.window == None) && gdk_input_vtable.window_none_event) { return_val = gdk_input_vtable.window_none_event (event,xevent); if (return_val >= 0) /* was handled */ return return_val; else return_val = FALSE; } window = gdk_window_lookup (xevent->xany.window); /* FIXME: window might be a GdkPixmap!!! */ window_private = (GdkWindowPrivate *) window; if (window != NULL) gdk_window_ref (window); event->any.window = window; event->any.send_event = xevent->xany.send_event ? TRUE : FALSE; if (window_private && GDK_DRAWABLE_DESTROYED (window)) { if (xevent->type != DestroyNotify) return FALSE; } else { /* Check for filters for this window */ GdkFilterReturn result; result = gdk_event_apply_filters (xevent, event, window_private ?window_private->filters :gdk_default_filters); if (result != GDK_FILTER_CONTINUE) { return (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE; } } #ifdef USE_XIM if (window == NULL && gdk_xim_window && xevent->type == KeyPress && !GDK_DRAWABLE_DESTROYED (gdk_xim_window)) { /* * If user presses a key in Preedit or Status window, keypress event * is sometimes sent to these windows. These windows are not managed * by GDK, so we redirect KeyPress event to xim_window. * * If someone want to use the window whitch is not managed by GDK * and want to get KeyPress event, he/she must register the filter * function to gdk_default_filters to intercept the event. */ GdkFilterReturn result; window = gdk_xim_window; window_private = (GdkWindowPrivate *) window; gdk_window_ref (window); event->any.window = window; GDK_NOTE (XIM, g_message ("KeyPress event is redirected to xim_window: %#lx", xevent->xany.window)); result = gdk_event_apply_filters (xevent, event, window_private->filters); if (result != GDK_FILTER_CONTINUE) return (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE; } #endif /* We do a "manual" conversion of the XEvent to a * GdkEvent. The structures are mostly the same so * the conversion is fairly straightforward. We also * optionally print debugging info regarding events * received. */ return_val = TRUE; switch (xevent->type) { case KeyPress: /* Lookup the string corresponding to the given keysym. */ #ifdef USE_XIM if (buf_len == 0) { buf_len = 128; buf = g_new (gchar, buf_len); } keysym = GDK_VoidSymbol; if (gdk_xim_ic && gdk_xim_ic->xic) { Status status; /* Clear keyval. Depending on status, may not be set */ charcount = XmbLookupString(gdk_xim_ic->xic, &xevent->xkey, buf, buf_len-1, &keysym, &status); if (status == XBufferOverflow) { /* retry */ /* alloc adequate size of buffer */ GDK_NOTE (XIM, g_message("XIM: overflow (required %i)", charcount)); while (buf_len <= charcount) buf_len *= 2; buf = (gchar *) g_realloc (buf, buf_len); charcount = XmbLookupString (gdk_xim_ic->xic, &xevent->xkey, buf, buf_len-1, &keysym, &status); } if (status == XLookupNone) { return_val = FALSE; break; } } else charcount = XLookupString (&xevent->xkey, buf, buf_len, &keysym, &compose); #else charcount = XLookupString (&xevent->xkey, buf, 16, &keysym, &compose); #endif event->key.keyval = keysym; if (charcount > 0 && buf[charcount-1] == '\0') charcount --; else buf[charcount] = '\0'; /* Print debugging info. */ #ifdef G_ENABLE_DEBUG if (gdk_debug_flags & GDK_DEBUG_EVENTS) { g_message ("key press:\twindow: %ld key: %12s %d", xevent->xkey.window, event->key.keyval ? XKeysymToString (event->key.keyval) : "(none)", event->key.keyval); if (charcount > 0) g_message ("\t\tlength: %4d string: \"%s\"", charcount, buf); } #endif /* G_ENABLE_DEBUG */ event->key.type = GDK_KEY_PRESS; event->key.window = window; event->key.time = xevent->xkey.time; event->key.state = (GdkModifierType) xevent->xkey.state; event->key.string = g_strdup (buf); event->key.length = charcount; break; case KeyRelease: /* Lookup the string corresponding to the given keysym. */ #ifdef USE_XIM if (buf_len == 0) { buf_len = 128; buf = g_new (gchar, buf_len); } #endif keysym = GDK_VoidSymbol; charcount = XLookupString (&xevent->xkey, buf, 16, &keysym, &compose); event->key.keyval = keysym; /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("key release:\t\twindow: %ld key: %12s %d", xevent->xkey.window, XKeysymToString (event->key.keyval), event->key.keyval)); event->key.type = GDK_KEY_RELEASE; event->key.window = window; event->key.time = xevent->xkey.time; event->key.state = (GdkModifierType) xevent->xkey.state; event->key.length = 0; event->key.string = NULL; break; case ButtonPress: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("button press:\t\twindow: %ld x,y: %d %d button: %d", xevent->xbutton.window, xevent->xbutton.x, xevent->xbutton.y, xevent->xbutton.button)); if (window_private && (window_private->extension_events != 0) && gdk_input_ignore_core) { return_val = FALSE; break; } event->button.type = GDK_BUTTON_PRESS; event->button.window = window; event->button.time = xevent->xbutton.time; event->button.x = xevent->xbutton.x; event->button.y = xevent->xbutton.y; event->button.x_root = (gfloat)xevent->xbutton.x_root; event->button.y_root = (gfloat)xevent->xbutton.y_root; event->button.pressure = 0.5; event->button.xtilt = 0; event->button.ytilt = 0; event->button.state = (GdkModifierType) xevent->xbutton.state; event->button.button = xevent->xbutton.button; event->button.source = GDK_SOURCE_MOUSE; event->button.deviceid = GDK_CORE_POINTER; gdk_event_button_generate (event); break; case ButtonRelease: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("button release:\twindow: %ld x,y: %d %d button: %d", xevent->xbutton.window, xevent->xbutton.x, xevent->xbutton.y, xevent->xbutton.button)); if (window_private && (window_private->extension_events != 0) && gdk_input_ignore_core) { return_val = FALSE; break; } event->button.type = GDK_BUTTON_RELEASE; event->button.window = window; event->button.time = xevent->xbutton.time; event->button.x = xevent->xbutton.x; event->button.y = xevent->xbutton.y; event->button.x_root = (gfloat)xevent->xbutton.x_root; event->button.y_root = (gfloat)xevent->xbutton.y_root; event->button.pressure = 0.5; event->button.xtilt = 0; event->button.ytilt = 0; event->button.state = (GdkModifierType) xevent->xbutton.state; event->button.button = xevent->xbutton.button; event->button.source = GDK_SOURCE_MOUSE; event->button.deviceid = GDK_CORE_POINTER; break; case MotionNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("motion notify:\t\twindow: %ld x,y: %d %d hint: %s", xevent->xmotion.window, xevent->xmotion.x, xevent->xmotion.y, (xevent->xmotion.is_hint) ? "true" : "false")); if (window_private && (window_private->extension_events != 0) && gdk_input_ignore_core) { return_val = FALSE; break; } event->motion.type = GDK_MOTION_NOTIFY; event->motion.window = window; event->motion.time = xevent->xmotion.time; event->motion.x = xevent->xmotion.x; event->motion.y = xevent->xmotion.y; event->motion.x_root = (gfloat)xevent->xmotion.x_root; event->motion.y_root = (gfloat)xevent->xmotion.y_root; event->motion.pressure = 0.5; event->motion.xtilt = 0; event->motion.ytilt = 0; event->motion.state = (GdkModifierType) xevent->xmotion.state; event->motion.is_hint = xevent->xmotion.is_hint; event->motion.source = GDK_SOURCE_MOUSE; event->motion.deviceid = GDK_CORE_POINTER; break; case EnterNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("enter notify:\t\twindow: %ld detail: %d subwin: %ld", xevent->xcrossing.window, xevent->xcrossing.detail, xevent->xcrossing.subwindow)); /* Tell XInput stuff about it if appropriate */ if (window_private && !GDK_DRAWABLE_DESTROYED (window) && (window_private->extension_events != 0) && gdk_input_vtable.enter_event) gdk_input_vtable.enter_event (&xevent->xcrossing, window); event->crossing.type = GDK_ENTER_NOTIFY; event->crossing.window = window; /* If the subwindow field of the XEvent is non-NULL, then * lookup the corresponding GdkWindow. */ if (xevent->xcrossing.subwindow != None) event->crossing.subwindow = gdk_window_lookup (xevent->xcrossing.subwindow); else event->crossing.subwindow = NULL; event->crossing.time = xevent->xcrossing.time; event->crossing.x = xevent->xcrossing.x; event->crossing.y = xevent->xcrossing.y; event->crossing.x_root = xevent->xcrossing.x_root; event->crossing.y_root = xevent->xcrossing.y_root; /* Translate the crossing mode into Gdk terms. */ switch (xevent->xcrossing.mode) { case NotifyNormal: event->crossing.mode = GDK_CROSSING_NORMAL; break; case NotifyGrab: event->crossing.mode = GDK_CROSSING_GRAB; break; case NotifyUngrab: event->crossing.mode = GDK_CROSSING_UNGRAB; break; }; /* Translate the crossing detail into Gdk terms. */ switch (xevent->xcrossing.detail) { case NotifyInferior: event->crossing.detail = GDK_NOTIFY_INFERIOR; break; case NotifyAncestor: event->crossing.detail = GDK_NOTIFY_ANCESTOR; break; case NotifyVirtual: event->crossing.detail = GDK_NOTIFY_VIRTUAL; break; case NotifyNonlinear: event->crossing.detail = GDK_NOTIFY_NONLINEAR; break; case NotifyNonlinearVirtual: event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL; break; default: event->crossing.detail = GDK_NOTIFY_UNKNOWN; break; } event->crossing.focus = xevent->xcrossing.focus; event->crossing.state = xevent->xcrossing.state; break; case LeaveNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("leave notify:\t\twindow: %ld detail: %d subwin: %ld", xevent->xcrossing.window, xevent->xcrossing.detail, xevent->xcrossing.subwindow)); event->crossing.type = GDK_LEAVE_NOTIFY; event->crossing.window = window; /* If the subwindow field of the XEvent is non-NULL, then * lookup the corresponding GdkWindow. */ if (xevent->xcrossing.subwindow != None) event->crossing.subwindow = gdk_window_lookup (xevent->xcrossing.subwindow); else event->crossing.subwindow = NULL; event->crossing.time = xevent->xcrossing.time; event->crossing.x = xevent->xcrossing.x; event->crossing.y = xevent->xcrossing.y; event->crossing.x_root = xevent->xcrossing.x_root; event->crossing.y_root = xevent->xcrossing.y_root; /* Translate the crossing mode into Gdk terms. */ switch (xevent->xcrossing.mode) { case NotifyNormal: event->crossing.mode = GDK_CROSSING_NORMAL; break; case NotifyGrab: event->crossing.mode = GDK_CROSSING_GRAB; break; case NotifyUngrab: event->crossing.mode = GDK_CROSSING_UNGRAB; break; }; /* Translate the crossing detail into Gdk terms. */ switch (xevent->xcrossing.detail) { case NotifyInferior: event->crossing.detail = GDK_NOTIFY_INFERIOR; break; case NotifyAncestor: event->crossing.detail = GDK_NOTIFY_ANCESTOR; break; case NotifyVirtual: event->crossing.detail = GDK_NOTIFY_VIRTUAL; break; case NotifyNonlinear: event->crossing.detail = GDK_NOTIFY_NONLINEAR; break; case NotifyNonlinearVirtual: event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL; break; default: event->crossing.detail = GDK_NOTIFY_UNKNOWN; break; } event->crossing.focus = xevent->xcrossing.focus; event->crossing.state = xevent->xcrossing.state; break; case FocusIn: case FocusOut: /* We only care about focus events that indicate that _this_ * window (not a ancestor or child) got or lost the focus */ switch (xevent->xfocus.detail) { case NotifyAncestor: case NotifyInferior: case NotifyNonlinear: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("focus %s:\t\twindow: %ld", (xevent->xany.type == FocusIn) ? "in" : "out", xevent->xfocus.window)); /* gdk_keyboard_grab() causes following events. These events confuse * the XIM focus, so ignore them. */ if (xevent->xfocus.mode == NotifyGrab || xevent->xfocus.mode == NotifyUngrab) break; event->focus_change.type = GDK_FOCUS_CHANGE; event->focus_change.window = window; event->focus_change.in = (xevent->xany.type == FocusIn); break; default: return_val = FALSE; } break; case KeymapNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("keymap notify")); /* Not currently handled */ return_val = FALSE; break; case Expose: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("expose:\t\twindow: %ld %d x,y: %d %d w,h: %d %d%s", xevent->xexpose.window, xevent->xexpose.count, xevent->xexpose.x, xevent->xexpose.y, xevent->xexpose.width, xevent->xexpose.height, event->any.send_event ? " (send)" : "")); gdk_compress_exposures (xevent, window); event->expose.type = GDK_EXPOSE; event->expose.window = window; event->expose.area.x = xevent->xexpose.x; event->expose.area.y = xevent->xexpose.y; event->expose.area.width = xevent->xexpose.width; event->expose.area.height = xevent->xexpose.height; event->expose.count = xevent->xexpose.count; break; case GraphicsExpose: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("graphics expose:\tdrawable: %ld", xevent->xgraphicsexpose.drawable)); event->expose.type = GDK_EXPOSE; event->expose.window = window; event->expose.area.x = xevent->xgraphicsexpose.x; event->expose.area.y = xevent->xgraphicsexpose.y; event->expose.area.width = xevent->xgraphicsexpose.width; event->expose.area.height = xevent->xgraphicsexpose.height; event->expose.count = xevent->xexpose.count; break; case NoExpose: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("no expose:\t\tdrawable: %ld", xevent->xnoexpose.drawable)); event->no_expose.type = GDK_NO_EXPOSE; event->no_expose.window = window; break; case VisibilityNotify: /* Print debugging info. */ #ifdef G_ENABLE_DEBUG if (gdk_debug_flags & GDK_DEBUG_EVENTS) switch (xevent->xvisibility.state) { case VisibilityFullyObscured: g_message ("visibility notify:\twindow: %ld none", xevent->xvisibility.window); break; case VisibilityPartiallyObscured: g_message ("visibility notify:\twindow: %ld partial", xevent->xvisibility.window); break; case VisibilityUnobscured: g_message ("visibility notify:\twindow: %ld full", xevent->xvisibility.window); break; } #endif /* G_ENABLE_DEBUG */ event->visibility.type = GDK_VISIBILITY_NOTIFY; event->visibility.window = window; switch (xevent->xvisibility.state) { case VisibilityFullyObscured: event->visibility.state = GDK_VISIBILITY_FULLY_OBSCURED; break; case VisibilityPartiallyObscured: event->visibility.state = GDK_VISIBILITY_PARTIAL; break; case VisibilityUnobscured: event->visibility.state = GDK_VISIBILITY_UNOBSCURED; break; } break; case CreateNotify: GDK_NOTE (EVENTS, g_message ("create notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d parent: %ld ovr: %d", xevent->xcreatewindow.window, xevent->xcreatewindow.x, xevent->xcreatewindow.y, xevent->xcreatewindow.width, xevent->xcreatewindow.height, xevent->xcreatewindow.border_width, xevent->xcreatewindow.parent, xevent->xcreatewindow.override_redirect)); /* not really handled */ break; case DestroyNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("destroy notify:\twindow: %ld", xevent->xdestroywindow.window)); event->any.type = GDK_DESTROY; event->any.window = window; return_val = window_private && !GDK_DRAWABLE_DESTROYED (window); if (window && GDK_DRAWABLE_XID (window) != GDK_ROOT_WINDOW()) gdk_window_destroy_notify (window); break; case UnmapNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("unmap notify:\t\twindow: %ld", xevent->xmap.window)); event->any.type = GDK_UNMAP; event->any.window = window; if (gdk_xgrab_window == window_private) gdk_xgrab_window = NULL; break; case MapNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("map notify:\t\twindow: %ld", xevent->xmap.window)); event->any.type = GDK_MAP; event->any.window = window; break; case ReparentNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("reparent notify:\twindow: %ld x,y: %d %d parent: %ld ovr: %d", xevent->xreparent.window, xevent->xreparent.x, xevent->xreparent.y, xevent->xreparent.parent, xevent->xreparent.override_redirect)); /* Not currently handled */ return_val = FALSE; break; case ConfigureNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("configure notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d above: %ld ovr: %d%s", xevent->xconfigure.window, xevent->xconfigure.x, xevent->xconfigure.y, xevent->xconfigure.width, xevent->xconfigure.height, xevent->xconfigure.border_width, xevent->xconfigure.above, xevent->xconfigure.override_redirect, !window ? " (discarding)" : GDK_DRAWABLE_TYPE (window) == GDK_WINDOW_CHILD ? " (discarding child)" : "")); if (window && !GDK_DRAWABLE_DESTROYED (window) && (window_private->extension_events != 0) && gdk_input_vtable.configure_event) gdk_input_vtable.configure_event (&xevent->xconfigure, window); if (!window || GDK_DRAWABLE_TYPE (window) == GDK_WINDOW_CHILD) return_val = FALSE; else { event->configure.type = GDK_CONFIGURE; event->configure.window = window; event->configure.width = xevent->xconfigure.width; event->configure.height = xevent->xconfigure.height; if (!xevent->xconfigure.x && !xevent->xconfigure.y && !GDK_DRAWABLE_DESTROYED (window)) { gint tx = 0; gint ty = 0; Window child_window = 0; gdk_error_trap_push (); if (XTranslateCoordinates (GDK_DRAWABLE_XDISPLAY (window), GDK_DRAWABLE_XID (window), gdk_root_window, 0, 0, &tx, &ty, &child_window)) { if (!gdk_error_trap_pop ()) { event->configure.x = tx; event->configure.y = ty; } } else gdk_error_trap_pop (); } else { event->configure.x = xevent->xconfigure.x; event->configure.y = xevent->xconfigure.y; } window_private->x = event->configure.x; window_private->y = event->configure.y; window_private->drawable.width = xevent->xconfigure.width; window_private->drawable.height = xevent->xconfigure.height; if (window_private->resize_count > 1) window_private->resize_count -= 1; } break; case PropertyNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, gchar *atom = gdk_atom_name (xevent->xproperty.atom); g_message ("property notify:\twindow: %ld, atom(%ld): %s%s%s", xevent->xproperty.window, xevent->xproperty.atom, atom ? "\"" : "", atom ? atom : "unknown", atom ? "\"" : ""); g_free (atom); ); event->property.type = GDK_PROPERTY_NOTIFY; event->property.window = window; event->property.atom = xevent->xproperty.atom; event->property.time = xevent->xproperty.time; event->property.state = xevent->xproperty.state; break; case SelectionClear: GDK_NOTE (EVENTS, g_message ("selection clear:\twindow: %ld", xevent->xproperty.window)); event->selection.type = GDK_SELECTION_CLEAR; event->selection.window = window; event->selection.selection = xevent->xselectionclear.selection; event->selection.time = xevent->xselectionclear.time; break; case SelectionRequest: GDK_NOTE (EVENTS, g_message ("selection request:\twindow: %ld", xevent->xproperty.window)); event->selection.type = GDK_SELECTION_REQUEST; event->selection.window = window; event->selection.selection = xevent->xselectionrequest.selection; event->selection.target = xevent->xselectionrequest.target; event->selection.property = xevent->xselectionrequest.property; event->selection.requestor = xevent->xselectionrequest.requestor; event->selection.time = xevent->xselectionrequest.time; break; case SelectionNotify: GDK_NOTE (EVENTS, g_message ("selection notify:\twindow: %ld", xevent->xproperty.window)); event->selection.type = GDK_SELECTION_NOTIFY; event->selection.window = window; event->selection.selection = xevent->xselection.selection; event->selection.target = xevent->xselection.target; event->selection.property = xevent->xselection.property; event->selection.time = xevent->xselection.time; break; case ColormapNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("colormap notify:\twindow: %ld", xevent->xcolormap.window)); /* Not currently handled */ return_val = FALSE; break; case ClientMessage: { GList *tmp_list; GdkFilterReturn result = GDK_FILTER_CONTINUE; /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("client message:\twindow: %ld", xevent->xclient.window)); tmp_list = client_filters; while (tmp_list) { GdkClientFilter *filter = tmp_list->data; if (filter->type == xevent->xclient.message_type) { result = (*filter->function) (xevent, event, filter->data); break; } tmp_list = tmp_list->next; } switch (result) { case GDK_FILTER_REMOVE: return_val = FALSE; break; case GDK_FILTER_TRANSLATE: return_val = TRUE; break; case GDK_FILTER_CONTINUE: /* Send unknown ClientMessage's on to Gtk for it to use */ event->client.type = GDK_CLIENT_EVENT; event->client.window = window; event->client.message_type = xevent->xclient.message_type; event->client.data_format = xevent->xclient.format; memcpy(&event->client.data, &xevent->xclient.data, sizeof(event->client.data)); } } break; case MappingNotify: /* Print debugging info. */ GDK_NOTE (EVENTS, g_message ("mapping notify")); /* Let XLib know that there is a new keyboard mapping. */ XRefreshKeyboardMapping (&xevent->xmapping); return_val = FALSE; break; default: /* something else - (e.g., a Xinput event) */ if (window_private && !window_private->drawable.destroyed && (window_private->extension_events != 0) && gdk_input_vtable.other_event) return_val = gdk_input_vtable.other_event(event, xevent, window); else return_val = FALSE; break; } if (return_val) { if (event->any.window) gdk_window_ref (event->any.window); if (((event->any.type == GDK_ENTER_NOTIFY) || (event->any.type == GDK_LEAVE_NOTIFY)) && (event->crossing.subwindow != NULL)) gdk_window_ref (event->crossing.subwindow); } else { /* Mark this event as having no resources to be freed */ event->any.window = NULL; event->any.type = GDK_NOTHING; } if (window) gdk_window_unref (window); return return_val; } GdkFilterReturn gdk_wm_protocols_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { XEvent *xevent = (XEvent *)xev; if ((Atom) xevent->xclient.data.l[0] == gdk_wm_delete_window) { /* The delete window request specifies a window * to delete. We don't actually destroy the * window because "it is only a request". (The * window might contain vital data that the * program does not want destroyed). Instead * the event is passed along to the program, * which should then destroy the window. */ GDK_NOTE (EVENTS, g_message ("delete window:\t\twindow: %ld", xevent->xclient.window)); event->any.type = GDK_DELETE; return GDK_FILTER_TRANSLATE; } else if ((Atom) xevent->xclient.data.l[0] == gdk_wm_take_focus) { } return GDK_FILTER_REMOVE; } #if 0 static Bool gdk_event_get_type (Display *display, XEvent *xevent, XPointer arg) { GdkEvent event; GdkPredicate *pred; if (gdk_event_translate (&event, xevent)) { pred = (GdkPredicate*) arg; return (* pred->func) (&event, pred->data); } return FALSE; } #endif void gdk_events_queue (void) { GList *node; GdkEvent *event; XEvent xevent; while (!gdk_event_queue_find_first() && XPending (gdk_display)) { #ifdef USE_XIM Window w = None; XNextEvent (gdk_display, &xevent); if (gdk_xim_window) switch (xevent.type) { case KeyPress: case KeyRelease: case ButtonPress: case ButtonRelease: w = GDK_WINDOW_XWINDOW (gdk_xim_window); break; } if (XFilterEvent (&xevent, w)) continue; #else XNextEvent (gdk_display, &xevent); #endif event = gdk_event_new (); event->any.type = GDK_NOTHING; event->any.window = NULL; event->any.send_event = xevent.xany.send_event ? TRUE : FALSE; ((GdkEventPrivate *)event)->flags |= GDK_EVENT_PENDING; gdk_event_queue_append (event); node = gdk_queued_tail; if (gdk_event_translate (event, &xevent)) { ((GdkEventPrivate *)event)->flags &= ~GDK_EVENT_PENDING; } else { gdk_event_queue_remove_link (node); g_list_free_1 (node); gdk_event_free (event); } } } static gboolean gdk_event_prepare (gpointer source_data, GTimeVal *current_time, gint *timeout, gpointer user_data) { gboolean retval; GDK_THREADS_ENTER (); *timeout = -1; retval = (gdk_event_queue_find_first () != NULL) || XPending (gdk_display); GDK_THREADS_LEAVE (); return retval; } static gboolean gdk_event_check (gpointer source_data, GTimeVal *current_time, gpointer user_data) { gboolean retval; GDK_THREADS_ENTER (); if (event_poll_fd.revents & G_IO_IN) retval = (gdk_event_queue_find_first () != NULL) || XPending (gdk_display); else retval = FALSE; GDK_THREADS_LEAVE (); return retval; } static gboolean gdk_event_dispatch (gpointer source_data, GTimeVal *current_time, gpointer user_data) { GdkEvent *event; GDK_THREADS_ENTER (); gdk_events_queue(); event = gdk_event_unqueue(); if (event) { if (gdk_event_func) (*gdk_event_func) (event, gdk_event_data); gdk_event_free (event); } GDK_THREADS_LEAVE (); return TRUE; } /* Sends a ClientMessage to all toplevel client windows */ gboolean gdk_event_send_client_message (GdkEvent *event, guint32 xid) { XEvent sev; g_return_val_if_fail(event != NULL, FALSE); /* Set up our event to send, with the exception of its target window */ sev.xclient.type = ClientMessage; sev.xclient.display = gdk_display; sev.xclient.format = event->client.data_format; sev.xclient.window = xid; memcpy(&sev.xclient.data, &event->client.data, sizeof(sev.xclient.data)); sev.xclient.message_type = event->client.message_type; return gdk_send_xevent (xid, False, NoEventMask, &sev); } /* Sends a ClientMessage to all toplevel client windows */ gboolean gdk_event_send_client_message_to_all_recurse (XEvent *xev, guint32 xid, guint level) { static GdkAtom wm_state_atom = GDK_NONE; Atom type = None; int format; unsigned long nitems, after; unsigned char *data; Window *ret_children, ret_root, ret_parent; unsigned int ret_nchildren; gint old_warnings = gdk_error_warnings; gboolean send = FALSE; gboolean found = FALSE; int i; if (!wm_state_atom) wm_state_atom = gdk_atom_intern ("WM_STATE", FALSE); gdk_error_warnings = FALSE; gdk_error_code = 0; XGetWindowProperty (gdk_display, xid, wm_state_atom, 0, 0, False, AnyPropertyType, &type, &format, &nitems, &after, &data); if (gdk_error_code) { gdk_error_warnings = old_warnings; return FALSE; } if (type) { send = TRUE; XFree (data); } else { /* OK, we're all set, now let's find some windows to send this to */ if (XQueryTree (gdk_display, xid, &ret_root, &ret_parent, &ret_children, &ret_nchildren) != True || gdk_error_code) { gdk_error_warnings = old_warnings; return FALSE; } for(i = 0; i < ret_nchildren; i++) if (gdk_event_send_client_message_to_all_recurse (xev, ret_children[i], level + 1)) found = TRUE; XFree (ret_children); } if (send || (!found && (level == 1))) { xev->xclient.window = xid; gdk_send_xevent (xid, False, NoEventMask, xev); } gdk_error_warnings = old_warnings; return (send || found); } void gdk_event_send_clientmessage_toall (GdkEvent *event) { XEvent sev; gint old_warnings = gdk_error_warnings; g_return_if_fail(event != NULL); /* Set up our event to send, with the exception of its target window */ sev.xclient.type = ClientMessage; sev.xclient.display = gdk_display; sev.xclient.format = event->client.data_format; memcpy(&sev.xclient.data, &event->client.data, sizeof(sev.xclient.data)); sev.xclient.message_type = event->client.message_type; gdk_event_send_client_message_to_all_recurse(&sev, gdk_root_window, 0); gdk_error_warnings = old_warnings; } /* *-------------------------------------------------------------- * gdk_flush * * Flushes the Xlib output buffer and then waits * until all requests have been received and processed * by the X server. The only real use for this function * is in dealing with XShm. * * Arguments: * * Results: * * Side effects: * *-------------------------------------------------------------- */ void gdk_flush (void) { XSync (gdk_display, False); }