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8fc5066a69
gtk/gdk/gdkevents.c
Tim Janik 8fc5066a69 removed return_if_fail (label->words != NULL) since that's a valid case 
Sat Dec 19 05:37:51 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtklabel.c (gtk_label_expose): removed return_if_fail
        (label->words != NULL) since that's a valid case when the label
        is empty, or just default constructed.
        fixed indentation prototype arguments and braces in some places.
        also, pointer comparisions and initializations are done with NULL
        not 0, there's a reason GLib defines NULL.

        * gdk/gdkevents.c (gdk_events_pending): return (queued_events ||
        putback_events) so this again returns whether events are pending,
        not whether other sources like idles are pending.

        * gtk/gtkmain.c (gtk_main_iteration_do):
        (gtk_main_iteration): return whether the loop is done, not whether
        something got dispatch to restore the original behaviour (yosh: this
        fixes code like in GleSelector).
1998-12-19 05:15:15 +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.
*/
#include "gdk.h"
#include "gdkx.h"
#include "gdkprivate.h"
#include "gdkinput.h"
#include "gdkkeysyms.h"
typedef struct _GdkIOClosure GdkIOClosure;
#define DOUBLE_CLICK_TIME 250
#define TRIPLE_CLICK_TIME 500
#define DOUBLE_CLICK_DIST 5
#define TRIPLE_CLICK_DIST 5
struct _GdkIOClosure {
GdkInputFunction function;
GdkInputCondition condition;
GdkDestroyNotify notify;
gpointer data;
};
/*
* Private function declarations
*/
static GdkEvent *gdk_event_new (void);
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 void gdk_events_queue (void);
static GdkEvent *gdk_event_unqueue (void);
static gboolean gdk_event_prepare (gpointer source_data,
GTimeVal *current_time,
gint *timeout);
static gboolean gdk_event_check (gpointer source_data,
GTimeVal *current_time);
static gboolean gdk_event_dispatch (gpointer source_data,
GTimeVal *current_time,
gpointer user_data);
static void gdk_synthesize_click (GdkEvent *event,
gint nclicks);
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 guint32 button_click_time[2]; /* The last 2 button click times. Used
* to determine if the latest button click
* is part of a double or triple click.
*/
static GdkWindow *button_window[2]; /* The last 2 windows to receive button presses.
* Also used to determine if the latest button
* click is part of a double or triple click.
*/
static guint button_number[2]; /* The last 2 buttons to be pressed.
*/
static GdkEventFunc event_func; /* Callback for events */
static gpointer event_data;
static GDestroyNotify event_notify;
static GList *client_filters; /* Filters for client messages */
/* FIFO's for event queue, and for events put back using
* gdk_event_put(). We keep separate queues so that
* we can make the putback events both FIFO and preemptive
* of pending events.
*/
static GList *queued_events = NULL;
static GList *queued_tail = NULL;
static GList *putback_events = NULL;
static GList *putback_tail = NULL;
static GSourceFuncs event_funcs = {
gdk_event_prepare,
gdk_event_check,
gdk_event_dispatch,
(GDestroyNotify)g_free
};
GPollFD event_poll_fd;
void
gdk_events_init (void)
{
connection_number = ConnectionNumber (gdk_display);
GDK_NOTE (MISC,
g_message ("connection number: %d", connection_number));
g_source_add (-10, 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, -10);
/* This is really crappy. We have to look into the display structure
* to find the base resource id. This is only needed for recording
* and playback of events.
*/
button_click_time[0] = 0;
button_click_time[1] = 0;
button_window[0] = NULL;
button_window[1] = NULL;
button_number[0] = -1;
button_number[1] = -1;
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:
*
*--------------------------------------------------------------
*/
gint
gdk_events_pending (void)
{
return (queued_events || putback_events);
}
/*
*--------------------------------------------------------------
* 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)
{
GdkWindowPrivate *private = (GdkWindowPrivate *)arg;
g_return_val_if_fail (private != NULL, False);
if ((xevent->xany.window == private->xwindow) &&
((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;
};
Bool
expose_predicate (Display *display, XEvent *xevent, XPointer arg)
{
GdkExposeInfo *info = (GdkExposeInfo *)arg;
if (xevent->xany.type != Expose)
{
info->seen_nonmatching = TRUE;
}
if (info->seen_nonmatching || (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;
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);
/* 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;
}
/*************************************************************
* gdk_event_handler_set:
*
* arguments:
* func: Callback function to be called for each event.
* data: Data supplied to the function
* notify: function called when function is no longer needed
*
* results:
*************************************************************/
void
gdk_event_handler_set (GdkEventFunc func,
gpointer data,
GDestroyNotify notify)
{
if (event_func && event_notify)
(*event_notify) (event_data);
event_func = func;
event_data = data;
event_notify = notify;
}
/*
*--------------------------------------------------------------
* gdk_event_get
*
* Gets the next event.
*
* Arguments:
*
* Results:
* If an event was received that we care about, returns
* a pointer to that event, to be freed with gdk_event_free.
* Otherwise, returns NULL. This function will also return
* before an event is received if the timeout interval
* runs out.
*
* Side effects:
*
*--------------------------------------------------------------
*/
GdkEvent *
gdk_event_get (void)
{
gdk_events_queue();
return gdk_event_unqueue();
}
void
gdk_event_put (GdkEvent *event)
{
GdkEvent *new_event;
GList *tmp_list;
g_return_if_fail (event != NULL);
new_event = gdk_event_copy (event);
tmp_list = g_list_alloc();
tmp_list->prev = putback_tail;
tmp_list->next = NULL;
tmp_list->data = new_event;
if (!putback_events)
{
putback_events = tmp_list;
putback_tail = tmp_list;
}
else
putback_tail->next = tmp_list;
}
/*
*--------------------------------------------------------------
* gdk_event_copy
*
* Copy a event structure into new storage.
*
* Arguments:
* "event" is the event struct to copy.
*
* Results:
* A new event structure. Free it with gdk_event_free.
*
* Side effects:
* The reference count of the window in the event is increased.
*
*--------------------------------------------------------------
*/
static GMemChunk *event_chunk;
static GdkEvent*
gdk_event_new (void)
{
GdkEvent *new_event;
if (event_chunk == NULL)
event_chunk = g_mem_chunk_new ("events",
sizeof (GdkEvent),
4096,
G_ALLOC_AND_FREE);
new_event = g_chunk_new (GdkEvent, event_chunk);
return new_event;
}
GdkEvent*
gdk_event_copy (GdkEvent *event)
{
GdkEvent *new_event;
g_return_val_if_fail (event != NULL, NULL);
new_event = gdk_event_new ();
*new_event = *event;
gdk_window_ref (new_event->any.window);
switch (event->any.type)
{
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
new_event->key.string = g_strdup (event->key.string);
break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
if (event->crossing.subwindow != NULL)
gdk_window_ref (event->crossing.subwindow);
break;
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DRAG_STATUS:
case GDK_DROP_START:
case GDK_DROP_FINISHED:
gdk_drag_context_ref (event->dnd.context);
break;
default:
break;
}
return new_event;
}
/*
*--------------------------------------------------------------
* gdk_event_free
*
* Free a event structure obtained from gdk_event_copy. Do not use
* with other event structures.
*
* Arguments:
* "event" is the event struct to free.
*
* Results:
*
* Side effects:
* The reference count of the window in the event is decreased and
* might be freed, too.
*
*-------------------------------------------------------------- */
void
gdk_event_free (GdkEvent *event)
{
g_assert (event_chunk != NULL);
g_return_if_fail (event != NULL);
if (event->any.window)
gdk_window_unref (event->any.window);
switch (event->any.type)
{
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
g_free (event->key.string);
break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
if (event->crossing.subwindow != NULL)
gdk_window_unref (event->crossing.subwindow);
break;
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DRAG_STATUS:
case GDK_DROP_START:
case GDK_DROP_FINISHED:
gdk_drag_context_unref (event->dnd.context);
break;
default:
break;
}
g_mem_chunk_free (event_chunk, event);
}
/*
*--------------------------------------------------------------
* gdk_event_get_time:
* Get the timestamp from an event.
* arguments:
* event:
* results:
* The event's time stamp, if it has one, otherwise
* GDK_CURRENT_TIME.
*--------------------------------------------------------------
*/
guint32
gdk_event_get_time (GdkEvent *event)
{
if (event)
switch (event->type)
{
case GDK_MOTION_NOTIFY:
return event->motion.time;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
return event->button.time;
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
return event->key.time;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
return event->crossing.time;
case GDK_PROPERTY_NOTIFY:
return event->property.time;
case GDK_SELECTION_CLEAR:
case GDK_SELECTION_REQUEST:
case GDK_SELECTION_NOTIFY:
return event->selection.time;
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
return event->proximity.time;
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DRAG_STATUS:
case GDK_DROP_START:
case GDK_DROP_FINISHED:
return event->dnd.time;
default: /* use current time */
break;
}
return GDK_CURRENT_TIME;
}
/*
*--------------------------------------------------------------
* gdk_set_show_events
*
* Turns on/off the showing of events.
*
* Arguments:
* "show_events" is a boolean describing whether or
* not to show the events gdk receives.
*
* Results:
*
* Side effects:
* When "show_events" is TRUE, calls to "gdk_event_get"
* will output debugging informatin regarding the event
* received to stdout.
*
*--------------------------------------------------------------
*/
void
gdk_set_show_events (int show_events)
{
if (show_events)
gdk_debug_flags |= GDK_DEBUG_EVENTS;
else
gdk_debug_flags &= ~GDK_DEBUG_EVENTS;
}
gint
gdk_get_show_events (void)
{
return gdk_debug_flags & GDK_DEBUG_EVENTS;
}
static void
gdk_io_destroy (gpointer data)
{
GdkIOClosure *closure = data;
if (closure->notify)
closure->notify (closure->data);
g_free (closure);
}
static gboolean
gdk_io_invoke (GIOChannel *source,
GIOCondition condition,
gpointer data)
{
GdkIOClosure *closure = data;
GdkInputCondition gdk_cond = 0;
if (condition & (G_IO_IN | G_IO_PRI))
gdk_cond |= GDK_INPUT_READ;
if (condition & G_IO_OUT)
gdk_cond |= GDK_INPUT_WRITE;
if (condition & (G_IO_ERR | G_IO_HUP | G_IO_NVAL))
gdk_cond |= GDK_INPUT_EXCEPTION;
if (closure->condition & gdk_cond)
closure->function (closure->data, g_io_channel_unix_get_fd (source), gdk_cond);
return TRUE;
}
gint
gdk_input_add_full (gint source,
GdkInputCondition condition,
GdkInputFunction function,
gpointer data,
GdkDestroyNotify destroy)
{
guint result;
GdkIOClosure *closure = g_new (GdkIOClosure, 1);
GIOChannel *channel;
GIOCondition cond = 0;
closure->function = function;
closure->condition = condition;
closure->notify = destroy;
closure->data = data;
if (condition & GDK_INPUT_READ)
cond |= (G_IO_IN | G_IO_PRI);
if (condition & GDK_INPUT_WRITE)
cond |= G_IO_OUT;
if (condition & GDK_INPUT_EXCEPTION)
cond |= G_IO_ERR|G_IO_HUP|G_IO_NVAL;
channel = g_io_channel_unix_new (source);
result = g_io_add_watch_full (channel, 0, cond, gdk_io_invoke,
closure, gdk_io_destroy);
g_io_channel_unref (channel);
return result;
}
gint
gdk_input_add (gint source,
GdkInputCondition condition,
GdkInputFunction function,
gpointer data)
{
return gdk_input_add_full (source, condition, function, data, NULL);
}
void
gdk_input_remove (gint tag)
{
g_source_remove (tag);
}
static gint
gdk_event_apply_filters (XEvent *xevent,
GdkEvent *event,
GList *filters)
{
GdkEventFilter *filter;
GList *tmp_list;
GdkFilterReturn result;
tmp_list = filters;
while (tmp_list)
{
filter = (GdkEventFilter *)tmp_list->data;
result = (*filter->function)(xevent, event, filter->data);
if (result != GDK_FILTER_CONTINUE)
return result;
tmp_list = tmp_list->next;
}
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);
window_private = (GdkWindowPrivate *) window;
if (window != NULL)
gdk_window_ref (window);
event->any.window = window;
event->any.send_event = xevent->xany.send_event;
if (window_private && window_private->destroyed)
{
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 &&
!((GdkWindowPrivate *) gdk_xim_window)->destroyed)
{
/*
* 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
if (window == NULL)
g_message ("Got event for unknown window: %#lx\n", xevent->xany.window);
/* 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;
if ((event->button.time < (button_click_time[1] + TRIPLE_CLICK_TIME)) &&
(event->button.window == button_window[1]) &&
(event->button.button == button_number[1]))
{
gdk_synthesize_click (event, 3);
button_click_time[1] = 0;
button_click_time[0] = 0;
button_window[1] = NULL;
button_window[0] = 0;
button_number[1] = -1;
button_number[0] = -1;
}
else if ((event->button.time < (button_click_time[0] + DOUBLE_CLICK_TIME)) &&
(event->button.window == button_window[0]) &&
(event->button.button == button_number[0]))
{
gdk_synthesize_click (event, 2);
button_click_time[1] = button_click_time[0];
button_click_time[0] = event->button.time;
button_window[1] = button_window[0];
button_window[0] = event->button.window;
button_number[1] = button_number[0];
button_number[0] = event->button.button;
}
else
{
button_click_time[1] = 0;
button_click_time[0] = event->button.time;
button_window[1] = NULL;
button_window[0] = event->button.window;
button_number[1] = -1;
button_number[0] = event->button.button;
}
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 &&
!window_private->destroyed &&
(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",
xevent->xexpose.window, xevent->xexpose.count,
xevent->xexpose.x, xevent->xexpose.y,
xevent->xexpose.width, xevent->xexpose.height));
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:
/* Not currently 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 && !window_private->destroyed;
if(window && window_private->xwindow != 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",
xevent->xreparent.window));
/* Not currently handled */
return_val = FALSE;
break;
case ConfigureNotify:
/* Print debugging info.
*/
while ((XPending (gdk_display) > 0) &&
XCheckTypedWindowEvent(gdk_display, xevent->xany.window,
ConfigureNotify, xevent))
{
GdkFilterReturn result;
GDK_NOTE (EVENTS,
g_message ("configure notify discarded:\twindow: %ld",
xevent->xconfigure.window));
result = gdk_event_apply_filters (xevent, event,
window_private
?window_private->filters
:gdk_default_filters);
/* If the result is GDK_FILTER_REMOVE, there will be
* trouble, but anybody who filtering the Configure events
* better know what they are doing
*/
if (result != GDK_FILTER_CONTINUE)
{
return (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
}
/*XSync (gdk_display, 0);*/
}
GDK_NOTE (EVENTS,
g_message ("configure notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d above: %ld ovr: %d",
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));
if (!window_private->destroyed &&
(window_private->extension_events != 0) &&
gdk_input_vtable.configure_event)
gdk_input_vtable.configure_event (&xevent->xconfigure, window);
if (window_private->window_type == 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 &&
!window_private->destroyed)
{
gint tx = 0;
gint ty = 0;
Window child_window = 0;
if (!XTranslateCoordinates (window_private->xdisplay,
window_private->xwindow,
gdk_root_window,
0, 0,
&tx, &ty,
&child_window))
g_warning ("GdkWindow %ld doesn't share root windows display?",
window_private->xwindow);
event->configure.x = tx;
event->configure.y = ty;
}
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->width = xevent->xconfigure.width;
window_private->height = xevent->xconfigure.height;
if (window_private->resize_count > 1)
window_private->resize_count -= 1;
}
break;
case PropertyNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_message ("property notify:\twindow: %ld",
xevent->xproperty.window));
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->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
static void
gdk_events_queue (void)
{
GdkEvent *event;
XEvent xevent;
while (!(putback_events || queued_events) && 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 = FALSE;
event->any.send_event = xevent.xany.send_event;
if (gdk_event_translate (event, &xevent))
{
GList *tmp_list = g_list_alloc();
tmp_list->prev = queued_tail;
tmp_list->next = NULL;
tmp_list->data = event;
if (!queued_events)
{
queued_events = tmp_list;
queued_tail = queued_events;
}
else
queued_tail->next = tmp_list;
}
else
gdk_event_free (event);
}
}
static gboolean
gdk_event_prepare (gpointer source_data,
GTimeVal *current_time,
gint *timeout)
{
gboolean retval;
GDK_THREADS_ENTER ();
*timeout = -1;
gdk_events_queue ();
retval = (queued_events || putback_events);
GDK_THREADS_LEAVE ();
return retval;
}
static gboolean
gdk_event_check (gpointer source_data,
GTimeVal *current_time)
{
gboolean retval;
GDK_THREADS_ENTER ();
if (event_poll_fd.revents & G_IO_IN)
gdk_events_queue ();
retval = (queued_events || putback_events);
GDK_THREADS_LEAVE ();
return retval;
}
static GdkEvent *
gdk_event_unqueue (void)
{
GdkEvent *event;
GList *tmp_list, **head, **tail;
if (putback_events)
{
head = &putback_events;
tail = &putback_tail;
}
else if (queued_events)
{
head = &queued_events;
tail = &queued_tail;
}
else
return NULL;
if (*head == *tail)
*tail = NULL;
tmp_list = *head;
event = tmp_list->data;
*head = g_list_remove_link (tmp_list, tmp_list);
g_list_free_1 (tmp_list);
return event;
}
static gboolean
gdk_event_dispatch (gpointer source_data,
GTimeVal *current_time,
gpointer user_data)
{
GdkEvent *event;
GDK_THREADS_ENTER ();
event = gdk_event_unqueue();
if (event)
{
if (event_func)
(*event_func) (event, event_data);
gdk_event_free (event);
}
GDK_THREADS_LEAVE ();
return TRUE;
}
static void
gdk_synthesize_click (GdkEvent *event,
gint nclicks)
{
GdkEvent temp_event;
g_return_if_fail (event != NULL);
temp_event = *event;
temp_event.type = (nclicks == 2) ? GDK_2BUTTON_PRESS : GDK_3BUTTON_PRESS;
gdk_event_put (&temp_event);
}
/* 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;
int i;
gboolean send = FALSE;
gboolean found = FALSE;
if (!wm_state_atom)
wm_state_atom = gdk_atom_intern ("WM_STATE", 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_code = 0;
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)
return FALSE;
if (gdk_error_code)
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);
}
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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