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8098546227
gtk/gdk/x11/gdkevents-x11.c
Owen Taylor 8098546227 Merge no-flicker branch into HEAD
2000-03-28 01:24:44 +00:00

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/* 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-x11.h"
#include "gdkinternals.h"
#include "gdkx.h"
#include "gdkkeysyms.h"
#if HAVE_CONFIG_H
# include <config.h>
# if STDC_HEADERS
# include <string.h>
# 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;
}
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;
gint xoffset, yoffset;
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;
if (window)
{
_gdk_windowing_window_get_offsets (window, &xoffset, &yoffset);
}
else
{
xoffset = 0;
yoffset = 0;
}
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;
}
/* If we get a ButtonPress event where the button is 4 or 5,
it's a Scroll event */
if (xevent->xbutton.button == 4 || xevent->xbutton.button == 5)
{
event->scroll.type = GDK_SCROLL;
event->scroll.direction = (xevent->xbutton.button == 4) ?
GDK_SCROLL_UP : GDK_SCROLL_DOWN;
event->scroll.window = window;
event->scroll.time = xevent->xbutton.x;
event->scroll.x = xevent->xbutton.x + xoffset;
event->scroll.y = xevent->xbutton.y + yoffset;
event->scroll.x_root = (gfloat)xevent->xbutton.x_root;
event->scroll.y_root = (gfloat)xevent->xbutton.y_root;
event->scroll.pressure = 0.5;
event->scroll.xtilt = 0;
event->scroll.ytilt = 0;
event->scroll.state = (GdkModifierType) xevent->xbutton.state;
event->scroll.source = GDK_SOURCE_MOUSE;
event->scroll.deviceid = GDK_CORE_POINTER;
}
else
{
event->button.type = GDK_BUTTON_PRESS;
event->button.window = window;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x + xoffset;
event->button.y = xevent->xbutton.y + yoffset;
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;
}
/* We treat button presses as scroll wheel events, so ignore the release */
if (xevent->xbutton.button == 4 || xevent->xbutton.button == 5)
{
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 + xoffset;
event->button.y = xevent->xbutton.y + yoffset;
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 + xoffset;
event->motion.y = xevent->xmotion.y + yoffset;
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 + xoffset;
event->crossing.y = xevent->xcrossing.y + yoffset;
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 + xoffset;
event->crossing.y = xevent->xcrossing.y + yoffset;
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)" : ""));
{
GdkRectangle expose_rect;
expose_rect.x = xevent->xexpose.x + xoffset;
expose_rect.y = xevent->xexpose.y + yoffset;
expose_rect.width = xevent->xexpose.width;
expose_rect.height = xevent->xexpose.height;
_gdk_window_process_expose (window, xevent->xexpose.serial, &expose_rect);
return_val = FALSE;
}
break;
case GraphicsExpose:
/* Print debugging info.
*/
{
GdkRectangle expose_rect;
GDK_NOTE (EVENTS,
g_message ("graphics expose:\tdrawable: %ld",
xevent->xgraphicsexpose.drawable));
expose_rect.x = xevent->xgraphicsexpose.x + xoffset;
expose_rect.y = xevent->xgraphicsexpose.y + yoffset;
expose_rect.width = xevent->xgraphicsexpose.width;
expose_rect.height = xevent->xgraphicsexpose.height;
_gdk_window_process_expose (window, xevent->xgraphicsexpose.serial, &expose_rect);
return_val = FALSE;
}
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);
}
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