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gtk/gdk/gdk.c

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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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "../config.h"
/* If you don't want to use gdk's signal handlers define this */
/* #define I_NEED_TO_ACTUALLY_DEBUG_MY_PROGRAMS 1 */
#include <X11/Xlocale.h>
#include <ctype.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#ifdef USE_XIM
#include <stdarg.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif /* HAVE_SYS_SELECT_H_ */
#define XLIB_ILLEGAL_ACCESS
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xos.h>
#include <X11/Xutil.h>
#include <X11/Xmu/WinUtil.h>
#ifdef USE_XIM
#include <X11/Xresource.h>
#endif
#include <X11/cursorfont.h>
#include "gdk.h"
#include "gdkprivate.h"
#include "gdkinput.h"
#ifdef USE_XIM
#include "gdkx.h"
#include "gdkkeysyms.h"
#endif
#include "gdki18n.h"
#ifndef X_GETTIMEOFDAY
#define X_GETTIMEOFDAY(tv) gettimeofday (tv, NULL)
#endif /* X_GETTIMEOFDAY */
#define DOUBLE_CLICK_TIME 250
#define TRIPLE_CLICK_TIME 500
#define DOUBLE_CLICK_DIST 5
#define TRIPLE_CLICK_DIST 5
#ifndef NO_FD_SET
# define SELECT_MASK fd_set
#else
# ifndef _AIX
typedef long fd_mask;
# endif
# if defined(_IBMR2)
# define SELECT_MASK void
# else
# define SELECT_MASK int
# endif
#endif
typedef struct _GdkInput GdkInput;
typedef struct _GdkPredicate GdkPredicate;
struct _GdkInput
{
gint tag;
gint source;
GdkInputCondition condition;
GdkInputFunction function;
gpointer data;
GdkDestroyNotify destroy;
};
struct _GdkPredicate
{
GdkEventFunc func;
gpointer data;
};
/*
* Private function declarations
*/
static GdkEvent *gdk_event_new (void);
static gint gdk_event_wait (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_synthesize_click (GdkEvent *event,
gint nclicks);
static void gdk_dnd_drag_begin (GdkWindow *initial_window);
static void gdk_dnd_drag_enter (Window dest);
static void gdk_dnd_drag_leave (Window dest);
static void gdk_dnd_drag_end (Window dest,
GdkPoint coords);
static GdkAtom gdk_dnd_check_types (GdkWindow *window,
XEvent *xevent);
#ifdef DEBUG_DND
static void gdk_print_atom (GdkAtom anatom);
#endif
/*
* old junk from offix, we might use it though so leave it
*/
Window gdk_get_client_window (Display *dpy,
Window win);
#ifdef WE_HAVE_MOTIF_DROPS_DONE
static GdkWindow * gdk_drop_get_real_window (GdkWindow *w,
guint16 *x,
guint16 *y);
#endif
static void gdk_exit_func (void);
static int gdk_x_error (Display *display,
XErrorEvent *error);
static int gdk_x_io_error (Display *display);
static RETSIGTYPE gdk_signal (int signum);
#ifdef USE_XIM
static GdkIM gdk_im_get (void);
static gint gdk_im_open (XrmDatabase db,
gchar* res_name,
gchar* rec_class);
static void gdk_im_close (void);
static void gdk_ic_cleanup (void);
#endif /* USE_XIM */
/* Private variable declarations
*/
static int initialized = 0; /* 1 if the library is initialized,
* 0 otherwise.
*/
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 struct timeval start; /* The time at which the library was
* last initialized.
*/
static struct timeval timer; /* Timeout interval to use in the call
* to "select". This is used in
* conjunction with "timerp" to create
* a maximum time to wait for an event
* to arrive.
*/
static struct timeval *timerp; /* The actual timer passed to "select"
* This may be NULL, in which case
* "select" will block until an event
* arrives.
*/
static guint32 timer_val; /* The timeout length as specified by
* the user in milliseconds.
*/
static GList *inputs; /* A list of the input file descriptors
* that we care about. Each list node
* contains a GdkInput struct that describes
* when we are interested in the specified
* file descriptor. That is, when it is
* available for read, write or has an
* exception pending.
*/
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 GdkWindowPrivate *xgrab_window = NULL; /* Window that currently holds the
* x pointer grab
*/
#ifdef USE_XIM
static gint xim_using; /* using XIM Protocol if TRUE */
static GdkIM xim_im; /* global IM */
static XIMStyles* xim_styles; /* im supports these styles */
static XIMStyle xim_best_allowed_style;
static GdkICPrivate *xim_ic; /* currently using IC */
static GdkWindow* xim_window; /* currently using Widow */
static GList* xim_ic_list;
#endif
#define OTHER_XEVENT_BUFSIZE 4
static XEvent other_xevent[OTHER_XEVENT_BUFSIZE]; /* XEvents passed along to user */
static int other_xevent_i = 0;
static GList *putback_events = NULL;
static gulong base_id;
static gint autorepeat;
#ifdef G_ENABLE_DEBUG
static GDebugKey gdk_debug_keys[] = {
{"events", GDK_DEBUG_EVENTS},
{"misc", GDK_DEBUG_MISC},
{"dnd", GDK_DEBUG_DND},
{"color-context", GDK_DEBUG_COLOR_CONTEXT},
{"xim", GDK_DEBUG_XIM}
};
static const int gdk_ndebug_keys = sizeof(gdk_debug_keys)/sizeof(GDebugKey);
#endif /* G_ENABLE_DEBUG */
/*
*--------------------------------------------------------------
* gdk_init
*
* Initialize the library for use.
*
* Arguments:
* "argc" is the number of arguments.
* "argv" is an array of strings.
*
* Results:
* "argc" and "argv" are modified to reflect any arguments
* which were not handled. (Such arguments should either
* be handled by the application or dismissed).
*
* Side effects:
* The library is initialized.
*
*--------------------------------------------------------------
*/
void
gdk_init (int *argc,
char ***argv)
{
XKeyboardState keyboard_state;
int synchronize;
int i, j, k;
XClassHint *class_hint;
int argc_orig = *argc;
char **argv_orig;
argv_orig = malloc ((argc_orig + 1) * sizeof (char*));
for (i = 0; i < argc_orig; i++)
argv_orig[i] = g_strdup ((*argv)[i]);
argv_orig[argc_orig] = NULL;
X_GETTIMEOFDAY (&start);
#ifndef I_NEED_TO_ACTUALLY_DEBUG_MY_PROGRAMS
signal (SIGHUP, gdk_signal);
signal (SIGINT, gdk_signal);
signal (SIGQUIT, gdk_signal);
signal (SIGBUS, gdk_signal);
signal (SIGSEGV, gdk_signal);
signal (SIGPIPE, gdk_signal);
signal (SIGTERM, gdk_signal);
#endif
gdk_display_name = NULL;
XSetErrorHandler (gdk_x_error);
XSetIOErrorHandler (gdk_x_io_error);
synchronize = FALSE;
#ifdef G_ENABLE_DEBUG
{
gchar *debug_string = getenv("GDK_DEBUG");
if (debug_string != NULL)
gdk_debug_flags = g_parse_debug_string (debug_string,
gdk_debug_keys,
gdk_ndebug_keys);
}
#endif /* G_ENABLE_DEBUG */
if (argc && argv)
{
if (*argc > 0)
gdk_progname = (*argv)[0];
for (i = 1; i < *argc;)
{
if ((*argv)[i] == NULL)
{
i += 1;
continue;
}
#ifdef G_ENABLE_DEBUG
if (strcmp ("--gdk-debug", (*argv)[i]) == 0)
{
(*argv)[i] = NULL;
if ((i + 1) < *argc && (*argv)[i + 1])
{
gdk_debug_flags |= g_parse_debug_string ((*argv)[i+1],
gdk_debug_keys,
gdk_ndebug_keys);
(*argv)[i + 1] = NULL;
i += 1;
}
}
else if (strcmp ("--gdk-no-debug", (*argv)[i]) == 0)
{
(*argv)[i] = NULL;
if ((i + 1) < *argc && (*argv)[i + 1])
{
gdk_debug_flags &= ~g_parse_debug_string ((*argv)[i+1],
gdk_debug_keys,
gdk_ndebug_keys);
(*argv)[i + 1] = NULL;
i += 1;
}
}
#endif /* G_ENABLE_DEBUG */
else if (strcmp ("--display", (*argv)[i]) == 0)
{
(*argv)[i] = NULL;
if ((i + 1) < *argc && (*argv)[i + 1])
{
gdk_display_name = g_strdup ((*argv)[i + 1]);
(*argv)[i + 1] = NULL;
i += 1;
}
}
else if (strcmp ("--sync", (*argv)[i]) == 0)
{
(*argv)[i] = NULL;
synchronize = TRUE;
}
else if (strcmp ("--no-xshm", (*argv)[i]) == 0)
{
(*argv)[i] = NULL;
gdk_use_xshm = FALSE;
}
else if (strcmp ("--name", (*argv)[i]) == 0)
{
if ((i + 1) < *argc && (*argv)[i + 1])
{
(*argv)[i++] = NULL;
gdk_progname = (*argv)[i];
(*argv)[i] = NULL;
}
}
else if (strcmp ("--class", (*argv)[i]) == 0)
{
if ((i + 1) < *argc && (*argv)[i + 1])
{
(*argv)[i++] = NULL;
gdk_progclass = (*argv)[i];
(*argv)[i] = NULL;
}
}
#ifdef XINPUT_GXI
else if (strcmp ("--gxid_host", (*argv)[i]) == 0)
{
if ((i + 1) < *argc && (*argv)[i + 1])
{
(*argv)[i++] = NULL;
gdk_input_gxid_host = ((*argv)[i]);
(*argv)[i] = NULL;
}
}
else if (strcmp ("--gxid_port", (*argv)[i]) == 0)
{
if ((i + 1) < *argc && (*argv)[i + 1])
{
(*argv)[i++] = NULL;
gdk_input_gxid_port = atoi ((*argv)[i]);
(*argv)[i] = NULL;
}
}
#endif
#ifdef USE_XIM
else if (strcmp ("--xim-preedit", (*argv)[i]) == 0)
{
if ((i + 1) < *argc && (*argv)[i + 1])
{
(*argv)[i++] = NULL;
if (strcmp ("none", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMPreeditNone);
else if (strcmp ("nothing", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMPreeditNothing);
else if (strcmp ("area", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMPreeditArea);
else if (strcmp ("position", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMPreeditPosition);
else if (strcmp ("callbacks", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMPreeditCallbacks);
}
}
else if (strcmp ("--xim-status", (*argv)[i]) == 0)
{
if ((i + 1) < *argc && (*argv)[i + 1])
{
(*argv)[i++] = NULL;
if (strcmp ("none", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMStatusNone);
else if (strcmp ("nothing", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMStatusNothing);
else if (strcmp ("area", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMStatusArea);
else if (strcmp ("callbacks", (*argv)[i]) == 0)
gdk_im_set_best_style (GdkIMStatusCallbacks);
}
}
#endif
i += 1;
}
for (i = 1; i < *argc; i++)
{
for (k = i; k < *argc; k++)
if ((*argv)[k] != NULL)
break;
if (k > i)
{
k -= i;
for (j = i + k; j < *argc; j++)
(*argv)[j-k] = (*argv)[j];
*argc -= k;
}
}
}
else
{
gdk_progname = "<unknown>";
}
gdk_display = XOpenDisplay (gdk_display_name);
if (!gdk_display)
{
g_warning ("cannot open display: %s", XDisplayName (gdk_display_name));
exit(1);
}
/* 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.
*/
/* base_id = RESOURCE_BASE; */
base_id = 0;
GDK_NOTE (EVENTS, g_print ("base id: %lu\n", base_id));
connection_number = ConnectionNumber (gdk_display);
GDK_NOTE (MISC,
g_print ("connection number: %d\n", connection_number));
if (synchronize)
XSynchronize (gdk_display, True);
gdk_screen = DefaultScreen (gdk_display);
gdk_root_window = RootWindow (gdk_display, gdk_screen);
gdk_leader_window = XCreateSimpleWindow(gdk_display, gdk_root_window,
10, 10, 10, 10, 0, 0 , 0);
class_hint = XAllocClassHint();
class_hint->res_name = gdk_progname;
if (gdk_progclass == NULL)
{
gdk_progclass = g_strdup (gdk_progname);
gdk_progclass[0] = toupper (gdk_progclass[0]);
}
class_hint->res_class = gdk_progclass;
XSetClassHint(gdk_display, gdk_leader_window, class_hint);
XSetCommand(gdk_display, gdk_leader_window, argv_orig, argc_orig);
XFree (class_hint);
gdk_wm_delete_window = XInternAtom (gdk_display, "WM_DELETE_WINDOW", True);
gdk_wm_take_focus = XInternAtom (gdk_display, "WM_TAKE_FOCUS", True);
gdk_wm_protocols = XInternAtom (gdk_display, "WM_PROTOCOLS", True);
gdk_wm_window_protocols[0] = gdk_wm_delete_window;
gdk_wm_window_protocols[1] = gdk_wm_take_focus;
gdk_selection_property = XInternAtom (gdk_display, "GDK_SELECTION", False);
gdk_dnd.gdk_XdeEnter = gdk_atom_intern("_XDE_ENTER", FALSE);
gdk_dnd.gdk_XdeLeave = gdk_atom_intern("_XDE_LEAVE", FALSE);
gdk_dnd.gdk_XdeRequest = gdk_atom_intern("_XDE_REQUEST", FALSE);
gdk_dnd.gdk_XdeDataAvailable = gdk_atom_intern("_XDE_DATA_AVAILABLE", FALSE);
gdk_dnd.gdk_XdeTypelist = gdk_atom_intern("_XDE_TYPELIST", FALSE);
gdk_dnd.c->gdk_cursor_dragdefault = XCreateFontCursor(gdk_display, XC_bogosity);
gdk_dnd.c->gdk_cursor_dragok = XCreateFontCursor(gdk_display, XC_heart);
XGetKeyboardControl (gdk_display, &keyboard_state);
autorepeat = keyboard_state.global_auto_repeat;
timer.tv_sec = 0;
timer.tv_usec = 0;
timerp = NULL;
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;
if (ATEXIT (gdk_exit_func))
g_warning ("unable to register exit function");
gdk_visual_init ();
gdk_window_init ();
gdk_image_init ();
gdk_input_init ();
#ifdef USE_XIM
/* initialize XIM Protocol variables */
xim_using = FALSE;
xim_im = NULL;
xim_styles = NULL;
if (!(xim_best_allowed_style & GdkIMPreeditMask))
gdk_im_set_best_style (GdkIMPreeditCallbacks);
if (!(xim_best_allowed_style & GdkIMStatusMask))
gdk_im_set_best_style (GdkIMStatusCallbacks);
xim_ic = NULL;
xim_window = (GdkWindow*)NULL;
gdk_im_open (NULL, NULL, NULL);
if (gdk_im_get () == NULL)
g_warning ("unable to open input method.");
#endif
initialized = 1;
}
/*
*--------------------------------------------------------------
* gdk_exit
*
* Restores the library to an un-itialized state and exits
* the program using the "exit" system call.
*
* Arguments:
* "errorcode" is the error value to pass to "exit".
*
* Results:
* Allocated structures are freed and the program exits
* cleanly.
*
* Side effects:
*
*--------------------------------------------------------------
*/
void
gdk_exit (int errorcode)
{
/* de-initialisation is done by the gdk_exit_funct(),
no need to do this here (Alex J.) */
exit (errorcode);
}
/*
*--------------------------------------------------------------
* gdk_set_locale
*
* Arguments:
*
* Results:
*
* Side effects:
*
*--------------------------------------------------------------
*/
gchar*
gdk_set_locale ()
{
if (!setlocale (LC_ALL,""))
g_print ("locale not supported by C library\n");
if (!XSupportsLocale ())
{
g_print ("locale not supported by Xlib, locale set to C\n");
setlocale (LC_ALL, "C");
}
if (!XSetLocaleModifiers (""))
{
g_print ("can not set locale modifiers\n");
}
return setlocale (LC_ALL,NULL);
}
/*
*--------------------------------------------------------------
* gdk_events_pending
*
* Returns the number of events pending on the queue.
* These events have already been read from the server
* connection.
*
* Arguments:
*
* Results:
* Returns the number of events on XLib's event queue.
*
* Side effects:
*
*--------------------------------------------------------------
*/
gint
gdk_events_pending ()
{
gint result;
GList *tmp_list;
result = XPending (gdk_display);
tmp_list = putback_events;
while (tmp_list)
{
result++;
tmp_list = tmp_list->next;
}
return result;
}
/*
*--------------------------------------------------------------
* 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;
}
/*
*--------------------------------------------------------------
* 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)
{
GdkEvent *event;
GList *temp_list;
XEvent xevent;
#if 0
if (pred)
{
temp_list = putback_events;
while (temp_list)
{
temp_event = temp_list->data;
if ((* pred) (temp_event, data))
{
if (event)
*event = *temp_event;
putback_events = g_list_remove_link (putback_events, temp_list);
g_list_free (temp_list);
return TRUE;
}
temp_list = temp_list->next;
}
event_pred.func = pred;
event_pred.data = data;
if (XCheckIfEvent (gdk_display, &xevent, gdk_event_get_type, (XPointer) & event_pred))
if (event)
return gdk_event_translate (event, &xevent);
}
else
#endif
if (putback_events)
{
event = putback_events->data;
temp_list = putback_events;
putback_events = g_list_remove_link (putback_events, temp_list);
g_list_free_1 (temp_list);
return event;
}
/* Wait for an event to occur or the timeout to elapse.
* If an event occurs "gdk_event_wait" will return TRUE.
* If the timeout elapses "gdk_event_wait" will return
* FALSE.
*/
if (gdk_event_wait ())
{
/* If we get here we can rest assurred that an event
* has occurred. Read it.
*/
#ifdef USE_XIM
gint filter_status;
if (xim_using && xim_window)
do
{ /* don't dispatch events used by IM */
XNextEvent (gdk_display, &xevent);
filter_status = XFilterEvent (&xevent,
GDK_WINDOW_XWINDOW (xim_window));
} while (filter_status == True);
else
XNextEvent (gdk_display, &xevent);
#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))
return event;
else
gdk_event_free (event);
}
return NULL;
}
void
gdk_event_put (GdkEvent *event)
{
GdkEvent *new_event;
g_return_if_fail (event != NULL);
new_event = gdk_event_copy (event);
putback_events = g_list_prepend (putback_events, new_event);
}
/*
*--------------------------------------------------------------
* 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_DROP_DATA_AVAIL:
new_event->dropdataavailable.data_type = g_strdup (event->dropdataavailable.data_type);
new_event->dropdataavailable.data = g_malloc (event->dropdataavailable.data_numbytes);
memcpy (new_event->dropdataavailable.data,
event->dropdataavailable.data,
event->dropdataavailable.data_numbytes);
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_DROP_DATA_AVAIL:
g_free (event->dropdataavailable.data_type);
g_free (event->dropdataavailable.data);
break;
case GDK_DRAG_REQUEST:
g_free (event->dragrequest.data_type);
break;
default:
break;
}
g_mem_chunk_free (event_chunk, event);
}
/*
*--------------------------------------------------------------
* 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;
}
void
gdk_set_use_xshm (gint use_xshm)
{
gdk_use_xshm = use_xshm;
}
gint
gdk_get_show_events ()
{
return gdk_debug_flags & GDK_DEBUG_EVENTS;
}
gint
gdk_get_use_xshm ()
{
return gdk_use_xshm;
}
/*
*--------------------------------------------------------------
* gdk_time_get
*
* Get the number of milliseconds since the library was
* initialized.
*
* Arguments:
*
* Results:
* The time since the library was initialized is returned.
* This time value is accurate to milliseconds even though
* a more accurate time down to the microsecond could be
* returned.
*
* Side effects:
*
*--------------------------------------------------------------
*/
guint32
gdk_time_get ()
{
struct timeval end;
struct timeval elapsed;
guint32 milliseconds;
X_GETTIMEOFDAY (&end);
if (start.tv_usec > end.tv_usec)
{
end.tv_usec += 1000000;
end.tv_sec--;
}
elapsed.tv_sec = end.tv_sec - start.tv_sec;
elapsed.tv_usec = end.tv_usec - start.tv_usec;
milliseconds = (elapsed.tv_sec * 1000) + (elapsed.tv_usec / 1000);
return milliseconds;
}
/*
*--------------------------------------------------------------
* gdk_timer_get
*
* Returns the current timer.
*
* Arguments:
*
* Results:
* Returns the current timer interval. This interval is
* in units of milliseconds.
*
* Side effects:
*
*--------------------------------------------------------------
*/
guint32
gdk_timer_get ()
{
return timer_val;
}
/*
*--------------------------------------------------------------
* gdk_timer_set
*
* Sets the timer interval.
*
* Arguments:
* "milliseconds" is the new value for the timer.
*
* Results:
*
* Side effects:
* Calls to "gdk_event_get" will last for a maximum
* of time of "milliseconds". However, a value of 0
* milliseconds will cause "gdk_event_get" to block
* indefinately until an event is received.
*
*--------------------------------------------------------------
*/
void
gdk_timer_set (guint32 milliseconds)
{
timer_val = milliseconds;
timer.tv_sec = milliseconds / 1000;
timer.tv_usec = (milliseconds % 1000) * 1000;
}
void
gdk_timer_enable ()
{
timerp = &timer;
}
void
gdk_timer_disable ()
{
timerp = NULL;
}
gint
gdk_input_add_full (gint source,
GdkInputCondition condition,
GdkInputFunction function,
gpointer data,
GdkDestroyNotify destroy)
{
static gint next_tag = 1;
GList *list;
GdkInput *input;
gint tag;
tag = 0;
list = inputs;
while (list)
{
input = list->data;
list = list->next;
if ((input->source == source) && (input->condition == condition))
{
if (input->destroy)
(input->destroy) (input->data);
input->function = function;
input->data = data;
input->destroy = destroy;
tag = input->tag;
}
}
if (!tag)
{
input = g_new (GdkInput, 1);
input->tag = next_tag++;
input->source = source;
input->condition = condition;
input->function = function;
input->data = data;
input->destroy = destroy;
tag = input->tag;
inputs = g_list_prepend (inputs, input);
}
return tag;
}
gint
gdk_input_add (gint source,
GdkInputCondition condition,
GdkInputFunction function,
gpointer data)
{
return gdk_input_add_interp (source, condition, function, data, NULL);
}
void
gdk_input_remove (gint tag)
{
GList *list;
GList *temp_list;
GdkInput *input;
list = inputs;
while (list)
{
input = list->data;
if (input->tag == tag)
{
if (input->destroy)
(input->destroy) (input->data);
temp_list = list;
if (list->next)
list->next->prev = list->prev;
if (list->prev)
list->prev->next = list->next;
if (inputs == list)
inputs = list->next;
temp_list->next = NULL;
temp_list->prev = NULL;
g_free (temp_list->data);
g_list_free (temp_list);
break;
}
list = list->next;
}
}
/*
*--------------------------------------------------------------
* gdk_pointer_grab
*
* Grabs the pointer to a specific window
*
* Arguments:
* "window" is the window which will receive the grab
* "owner_events" specifies whether events will be reported as is,
* or relative to "window"
* "event_mask" masks only interesting events
* "confine_to" limits the cursor movement to the specified window
* "cursor" changes the cursor for the duration of the grab
* "time" specifies the time
*
* Results:
*
* Side effects:
* requires a corresponding call to gdk_pointer_ungrab
*
*--------------------------------------------------------------
*/
gint
gdk_pointer_grab (GdkWindow * window,
gint owner_events,
GdkEventMask event_mask,
GdkWindow * confine_to,
GdkCursor * cursor,
guint32 time)
{
/* From gdkwindow.c */
extern int nevent_masks;
extern int event_mask_table[];
gint return_val;
GdkWindowPrivate *window_private;
GdkWindowPrivate *confine_to_private;
GdkCursorPrivate *cursor_private;
guint xevent_mask;
Window xwindow;
Window xconfine_to;
Cursor xcursor;
int i;
g_return_val_if_fail (window != NULL, 0);
window_private = (GdkWindowPrivate*) window;
confine_to_private = (GdkWindowPrivate*) confine_to;
cursor_private = (GdkCursorPrivate*) cursor;
xwindow = window_private->xwindow;
if (!confine_to || confine_to_private->destroyed)
xconfine_to = None;
else
xconfine_to = confine_to_private->xwindow;
if (!cursor)
xcursor = None;
else
xcursor = cursor_private->xcursor;
xevent_mask = 0;
for (i = 0; i < nevent_masks; i++)
{
if (event_mask & (1 << (i + 1)))
xevent_mask |= event_mask_table[i];
}
if (((GdkWindowPrivate *)window)->extension_events &&
gdk_input_vtable.grab_pointer)
return_val = gdk_input_vtable.grab_pointer (window,
owner_events,
event_mask,
confine_to,
time);
else
return_val = Success;
if (return_val == Success)
{
if (!window_private->destroyed)
return_val = XGrabPointer (window_private->xdisplay,
xwindow,
owner_events,
xevent_mask,
GrabModeAsync, GrabModeAsync,
xconfine_to,
xcursor,
time);
else
return_val = AlreadyGrabbed;
}
if (return_val == GrabSuccess)
xgrab_window = window_private;
return return_val;
}
/*
*--------------------------------------------------------------
* gdk_pointer_ungrab
*
* Releases any pointer grab
*
* Arguments:
*
* Results:
*
* Side effects:
*
*--------------------------------------------------------------
*/
void
gdk_pointer_ungrab (guint32 time)
{
if (gdk_input_vtable.ungrab_pointer)
gdk_input_vtable.ungrab_pointer (time);
XUngrabPointer (gdk_display, time);
xgrab_window = NULL;
}
/*
*--------------------------------------------------------------
* gdk_pointer_is_grabbed
*
* Tell wether there is an active x pointer grab in effect
*
* Arguments:
*
* Results:
*
* Side effects:
*
*--------------------------------------------------------------
*/
gint
gdk_pointer_is_grabbed (void)
{
return xgrab_window != NULL;
}
/*
*--------------------------------------------------------------
* gdk_keyboard_grab
*
* Grabs the keyboard to a specific window
*
* Arguments:
* "window" is the window which will receive the grab
* "owner_events" specifies whether events will be reported as is,
* or relative to "window"
* "time" specifies the time
*
* Results:
*
* Side effects:
* requires a corresponding call to gdk_keyboard_ungrab
*
*--------------------------------------------------------------
*/
gint
gdk_keyboard_grab (GdkWindow * window,
gint owner_events,
guint32 time)
{
GdkWindowPrivate *window_private;
Window xwindow;
g_return_val_if_fail (window != NULL, 0);
window_private = (GdkWindowPrivate*) window;
xwindow = window_private->xwindow;
if (!window_private->destroyed)
return XGrabKeyboard (window_private->xdisplay,
xwindow,
owner_events,
GrabModeAsync, GrabModeAsync,
time);
else
return AlreadyGrabbed;
}
/*
*--------------------------------------------------------------
* gdk_keyboard_ungrab
*
* Releases any keyboard grab
*
* Arguments:
*
* Results:
*
* Side effects:
*
*--------------------------------------------------------------
*/
void
gdk_keyboard_ungrab (guint32 time)
{
XUngrabKeyboard (gdk_display, time);
}
/*
*--------------------------------------------------------------
* gdk_screen_width
*
* Return the width of the screen.
*
* Arguments:
*
* Results:
*
* Side effects:
*
*--------------------------------------------------------------
*/
gint
gdk_screen_width ()
{
gint return_val;
return_val = DisplayWidth (gdk_display, gdk_screen);
return return_val;
}
/*
*--------------------------------------------------------------
* gdk_screen_height
*
* Return the height of the screen.
*
* Arguments:
*
* Results:
*
* Side effects:
*
*--------------------------------------------------------------
*/
gint
gdk_screen_height ()
{
gint return_val;
return_val = DisplayHeight (gdk_display, gdk_screen);
return return_val;
}
void
gdk_key_repeat_disable ()
{
XAutoRepeatOff (gdk_display);
}
void
gdk_key_repeat_restore ()
{
if (autorepeat)
XAutoRepeatOn (gdk_display);
else
XAutoRepeatOff (gdk_display);
}
/*
*--------------------------------------------------------------
* 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 ()
{
XSync (gdk_display, False);
}
void
gdk_beep ()
{
XBell(gdk_display, 100);
}
/*
*--------------------------------------------------------------
* gdk_event_wait
*
* Waits until an event occurs or the timer runs out.
*
* Arguments:
*
* Results:
* Returns TRUE if an event is ready to be read and FALSE
* if the timer ran out.
*
* Side effects:
*
*--------------------------------------------------------------
*/
static gint
gdk_event_wait ()
{
GList *list;
GdkInput *input;
GdkInputCondition condition;
SELECT_MASK readfds;
SELECT_MASK writefds;
SELECT_MASK exceptfds;
int max_input;
int nfd;
/* If there are no events pending we will wait for an event.
* The time we wait is dependant on the "timer". If no timer
* has been specified then we'll block until an event arrives.
* If a timer has been specified we'll block until an event
* arrives or the timer expires. (This is all done using the
* "select" system call).
*/
if (XPending (gdk_display) == 0)
{
FD_ZERO (&readfds);
FD_ZERO (&writefds);
FD_ZERO (&exceptfds);
FD_SET (connection_number, &readfds);
max_input = connection_number;
list = inputs;
while (list)
{
input = list->data;
list = list->next;
if (input->condition & GDK_INPUT_READ)
FD_SET (input->source, &readfds);
if (input->condition & GDK_INPUT_WRITE)
FD_SET (input->source, &writefds);
if (input->condition & GDK_INPUT_EXCEPTION)
FD_SET (input->source, &exceptfds);
max_input = MAX (max_input, input->source);
}
nfd = select (max_input+1, &readfds, &writefds, &exceptfds, timerp);
timerp = NULL;
timer_val = 0;
if (nfd > 0)
{
if (FD_ISSET (connection_number, &readfds))
{
if (XPending (gdk_display) == 0)
{
if (nfd == 1)
{
XNoOp (gdk_display);
XFlush (gdk_display);
}
return FALSE;
}
else
return TRUE;
}
list = inputs;
while (list)
{
input = list->data;
list = list->next;
condition = 0;
if (FD_ISSET (input->source, &readfds))
condition |= GDK_INPUT_READ;
if (FD_ISSET (input->source, &writefds))
condition |= GDK_INPUT_WRITE;
if (FD_ISSET (input->source, &exceptfds))
condition |= GDK_INPUT_EXCEPTION;
if (condition && input->function)
(* input->function) (input->data, input->source, condition);
}
}
}
else
return TRUE;
return FALSE;
}
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;
}
static gint
gdk_event_translate (GdkEvent *event,
XEvent *xevent)
{
GdkWindow *window;
GdkWindowPrivate *window_private;
XComposeStatus compose;
int charcount;
#ifdef USE_XIM
static gchar* buf = NULL;
static gint buf_len= 0;
#else
char buf[16];
#endif
gint return_val;
/* Are static variables used for this purpose thread-safe? */
static GdkPoint dnd_drag_start = {0,0},
dnd_drag_oldpos = {0,0};
static GdkRectangle dnd_drag_dropzone = {0,0,0,0};
static GdkWindowPrivate *real_sw = NULL;
static Window dnd_drag_curwin = None;
return_val = FALSE;
/* Find the GdkWindow that this event occurred in.
* All events occur in some GdkWindow (otherwise, why
* would we be receiving them). It really is an error
* to receive an event for which we cannot find the
* corresponding GdkWindow. 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);
else if(gdk_null_window_warnings) /* Special purpose programs that
get events for other windows may
want to disable this */
g_warning ("%#lx -> NULL\n", xevent->xany.window);
/* Check for filters for this window */
{
GdkFilterReturn result;
result = gdk_event_apply_filters (xevent, event,
window_private
?window_private->filters
:default_filters);
if (result != GDK_FILTER_CONTINUE)
{
return (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
}
}
/* 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.
*/
/* Addendum:
* During drag & drop you get events where the pointer is
* in other windows. Need to just do finer-grained checking
*/
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);
}
if (xim_using == TRUE && xim_ic)
{
Status status;
/* Clear keyval. Depending on status, may not be set */
event->key.keyval = GDK_VoidSymbol;
charcount = XmbLookupString(xim_ic->xic,
&xevent->xkey, buf, buf_len-1,
(KeySym*) &event->key.keyval,
&status);
if (status == XBufferOverflow)
{ /* retry */
/* alloc adequate size of buffer */
GDK_NOTE (XIM,
g_print("XIM: overflow (required %i)\n", charcount));
while (buf_len <= charcount)
buf_len *= 2;
buf = (gchar *) g_realloc (buf, buf_len);
charcount = XmbLookupString (xim_ic->xic,
&xevent->xkey, buf, buf_len-1,
(KeySym*) &event->key.keyval,
&status);
}
if (status == XLookupNone)
{
return_val = FALSE;
break;
}
}
else
charcount = XLookupString (&xevent->xkey, buf, buf_len,
(KeySym*) &event->key.keyval,
&compose);
#else
charcount = XLookupString (&xevent->xkey, buf, 16,
(KeySym*) &event->key.keyval,
&compose);
#endif
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_print ("key press:\twindow: %ld key: %12s %d\n",
xevent->xkey.window - base_id,
event->key.keyval ? XKeysymToString (event->key.keyval) : "(none)",
event->key.keyval);
if (charcount > 0)
g_print ("\t\tlength: %4d string: \"%s\"\n",
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;
return_val = window_private && !window_private->destroyed;
if (!return_val)
g_free (event->key.string);
break;
case KeyRelease:
/* Lookup the string corresponding to the given keysym.
*/
charcount = XLookupString (&xevent->xkey, buf, 16,
(KeySym*) &event->key.keyval,
&compose);
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("key release:\t\twindow: %ld key: %12s %d\n",
xevent->xkey.window - base_id,
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;
return_val = window_private && !window_private->destroyed;
break;
case ButtonPress:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("button press[%d]:\t\twindow: %ld x,y: %d %d button: %d\n",
window_private?window_private->dnd_drag_enabled:0,
xevent->xbutton.window - base_id,
xevent->xbutton.x, xevent->xbutton.y,
xevent->xbutton.button));
if (window_private &&
(window_private->extension_events != 0) &&
gdk_input_ignore_core)
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;
}
if(window_private
&& window_private->dnd_drag_enabled
&& !gdk_dnd.drag_perhaps
&& !gdk_dnd.drag_really)
{
gdk_dnd.drag_perhaps = 1;
dnd_drag_start.x = xevent->xbutton.x_root;
dnd_drag_start.y = xevent->xbutton.y_root;
real_sw = window_private;
if(gdk_dnd.drag_startwindows)
{
g_free(gdk_dnd.drag_startwindows);
gdk_dnd.drag_startwindows = NULL;
}
gdk_dnd.drag_numwindows = gdk_dnd.drag_really = 0;
gdk_dnd.dnd_grabbed = FALSE;
{
/* Set motion mask for first DnD'd window, since it
will be the one that is actually dragged */
XWindowAttributes dnd_winattr;
XSetWindowAttributes dnd_setwinattr;
/* We need to get motion events while the button is down, so
we can know whether to really start dragging or not... */
XGetWindowAttributes(gdk_display, (Window)window_private->xwindow,
&dnd_winattr);
window_private->dnd_drag_savedeventmask = dnd_winattr.your_event_mask;
dnd_setwinattr.event_mask =
window_private->dnd_drag_eventmask = ButtonMotionMask | EnterWindowMask | LeaveWindowMask;
XChangeWindowAttributes(gdk_display, window_private->xwindow,
CWEventMask, &dnd_setwinattr);
}
}
return_val = window_private && !window_private->destroyed;
break;
case ButtonRelease:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("button release[%d]:\twindow: %ld x,y: %d %d button: %d\n",
window_private?window_private->dnd_drag_enabled:0,
xevent->xbutton.window - base_id,
xevent->xbutton.x, xevent->xbutton.y,
xevent->xbutton.button));
if (window_private &&
(window_private->extension_events != 0) &&
gdk_input_ignore_core)
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;
if(gdk_dnd.drag_perhaps)
{
{
XSetWindowAttributes attrs;
/* Reset event mask to pre-drag value, assuming event_mask
doesn't change during drag */
attrs.event_mask = real_sw->dnd_drag_savedeventmask;
XChangeWindowAttributes(gdk_display, real_sw->xwindow,
CWEventMask, &attrs);
}
if (gdk_dnd.dnd_grabbed)
{
gdk_dnd_display_drag_cursor(-2,
-2,
FALSE, TRUE);
XUngrabPointer(gdk_display, CurrentTime);
gdk_dnd.dnd_grabbed = FALSE;
}
if(gdk_dnd.drag_really)
{
GdkPoint foo;
foo.x = xevent->xbutton.x_root;
foo.y = xevent->xbutton.y_root;
if(gdk_dnd.dnd_drag_target != None)
gdk_dnd_drag_end(gdk_dnd.dnd_drag_target, foo);
gdk_dnd.drag_really = 0;
gdk_dnd.drag_numwindows = 0;
if(gdk_dnd.drag_startwindows)
{
g_free(gdk_dnd.drag_startwindows);
gdk_dnd.drag_startwindows = NULL;
}
real_sw = NULL;
}
gdk_dnd.drag_perhaps = 0;
dnd_drag_start.x = dnd_drag_start.y = 0;
dnd_drag_dropzone.x = dnd_drag_dropzone.y = 0;
dnd_drag_dropzone.width = dnd_drag_dropzone.height = 0;
dnd_drag_curwin = None;
return_val = window_private?TRUE:FALSE;
} else
return_val = window_private && !window_private->destroyed;
break;
case MotionNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("motion notify:\t\twindow: %ld x,y: %d %d hint: %s d:%d r%d\n",
xevent->xmotion.window - base_id,
xevent->xmotion.x, xevent->xmotion.y,
(xevent->xmotion.is_hint) ? "true" : "false",
gdk_dnd.drag_perhaps, gdk_dnd.drag_really));
if (window_private &&
(window_private->extension_events != 0) &&
gdk_input_ignore_core)
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;
#define IS_IN_ZONE(cx, cy) (cx >= dnd_drag_dropzone.x \
&& cy >= dnd_drag_dropzone.y \
&& cx < (dnd_drag_dropzone.x + dnd_drag_dropzone.width) \
&& cy < (dnd_drag_dropzone.y + dnd_drag_dropzone.height))
if(gdk_dnd.drag_perhaps && gdk_dnd.drag_really)
{
/* First, we have to find what window the motion was in... */
/* XXX there has to be a better way to do this, perhaps with
XTranslateCoordinates or XQueryTree - I don't know how,
and this sort of works */
static Window lastwin = None, curwin = None, twin;
Window childwin = gdk_root_window;
int x, y, ox, oy;
/* Interlude - display cursor for the drag ASAP */
gdk_dnd_display_drag_cursor(xevent->xmotion.x_root,
xevent->xmotion.y_root,
gdk_dnd.dnd_drag_target?TRUE:FALSE,
FALSE);
lastwin = curwin;
curwin = gdk_root_window;
ox = x = xevent->xmotion.x_root;
oy = y = xevent->xmotion.y_root;
while(childwin != None)
{
ox = x; oy = y;
curwin = childwin;
XTranslateCoordinates(gdk_display, curwin, curwin,
x, y, &x, &y, &childwin);
if(childwin != None)
{
XTranslateCoordinates(gdk_display, curwin, childwin,
x, y, &x, &y, &twin);
}
}
GDK_NOTE (DND,
g_print("Drag is now in window %#lx, lastwin was %#lx, ddc = %#lx\n",
curwin, lastwin, dnd_drag_curwin));
if(curwin != dnd_drag_curwin && curwin != lastwin)
{
/* We have left one window and entered another
(do leave & enter bits) */
if(dnd_drag_curwin != None)
gdk_dnd_drag_leave(dnd_drag_curwin);
dnd_drag_curwin = curwin;
gdk_dnd_drag_enter(dnd_drag_curwin);
dnd_drag_dropzone.x = dnd_drag_dropzone.y = 0;
dnd_drag_dropzone.width = dnd_drag_dropzone.height = 0;
gdk_dnd.dnd_drag_target = None;
GDK_NOTE (DND,
g_print("curwin = %#lx, lastwin = %#lx, dnd_drag_curwin = %#lx\n",
curwin, lastwin, dnd_drag_curwin));
gdk_dnd_display_drag_cursor(xevent->xmotion.x_root,
xevent->xmotion.y_root,
FALSE, TRUE);
}
else if(dnd_drag_dropzone.width > 0
&& dnd_drag_dropzone.height > 0
&& curwin == dnd_drag_curwin)
{
/* Handle all that dropzone stuff - thanks John ;-) */
if (gdk_dnd.dnd_drag_target != None)
{
gboolean in_zone = IS_IN_ZONE(xevent->xmotion.x_root,
xevent->xmotion.y_root);
gboolean old_in_zone = IS_IN_ZONE(dnd_drag_oldpos.x,
dnd_drag_oldpos.y);
if (!in_zone && old_in_zone)
{
/* We were in the drop zone and moved out */
gdk_dnd.dnd_drag_target = None;
gdk_dnd_drag_leave(curwin);
gdk_dnd_display_drag_cursor(xevent->xmotion.x_root,
xevent->xmotion.y_root,
FALSE, TRUE);
}
else if (!in_zone && !old_in_zone)
{
/* We were outside drop zone but in the window
- have to send enter events */
gdk_dnd_drag_enter(curwin);
dnd_drag_curwin = curwin;
dnd_drag_dropzone.x = dnd_drag_dropzone.y = 0;
gdk_dnd.dnd_drag_target = None;
}
}
} /* else
dnd_drag_curwin = None; */
return_val = FALSE;
}
else
return_val = window_private && !window_private->destroyed;
break;
case EnterNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("enter notify:\t\twindow: %ld detail: %d subwin: %ld\n",
xevent->xcrossing.window - base_id,
xevent->xcrossing.detail,
xevent->xcrossing.subwindow - base_id));
/* Tell XInput stuff about it if appropriate */
if (window_private &&
(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;
/* 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;
}
#ifdef G_ENABLE_DEBUG
if ((gdk_debug_flags & GDK_DEBUG_DND) & gdk_dnd.drag_perhaps)
{
g_print("We may[%d] have a drag into %#lx = %#lx\n",
gdk_dnd.drag_really,
xevent->xcrossing.window, real_sw->xwindow);
}
#endif /* G_ENABLE_DEBUG */
if (gdk_dnd.drag_perhaps && gdk_dnd.drag_really &&
(xevent->xcrossing.window == real_sw->xwindow))
{
gdk_dnd.drag_really = 0;
GDK_NOTE (DND, g_print("Ungrabbed\n"));
gdk_dnd.drag_numwindows = 0;
g_free(gdk_dnd.drag_startwindows);
gdk_dnd.drag_startwindows = NULL;
/* We don't want to ungrab the pointer here, or we'll
* start getting spurious enter/leave events */
#if 0
XChangeActivePointerGrab (gdk_display, 0, None, CurrentTime);
#endif
}
return_val = window_private && !window_private->destroyed;
break;
case LeaveNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("leave notify:\t\twindow: %ld detail: %d subwin: %ld\n",
xevent->xcrossing.window - base_id,
xevent->xcrossing.detail, xevent->xcrossing.subwindow - base_id));
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;
/* 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;
}
#ifdef G_ENABLE_DEBUG
if ((gdk_debug_flags & GDK_DEBUG_DND) & gdk_dnd.drag_perhaps)
{
g_print("We may[%d] have a drag out of %#lx = %#lx\n",
gdk_dnd.drag_really,
xevent->xcrossing.window, real_sw->xwindow);
}
#endif /* G_ENABLE_DEBUG */
if (gdk_dnd.drag_perhaps && !gdk_dnd.drag_really &&
(xevent->xcrossing.window == real_sw->xwindow))
{
gdk_dnd_drag_addwindow((GdkWindow *) real_sw);
gdk_dnd_drag_begin((GdkWindow *) real_sw);
XGrabPointer(gdk_display, real_sw->xwindow, False,
ButtonMotionMask |
ButtonPressMask | ButtonReleaseMask,
GrabModeAsync, GrabModeAsync, gdk_root_window,
None, CurrentTime);
gdk_dnd.dnd_grabbed = TRUE;
gdk_dnd.drag_really = 1;
gdk_dnd_display_drag_cursor(xevent->xmotion.x_root,
xevent->xmotion.y_root,
FALSE, TRUE);
}
return_val = window_private && !window_private->destroyed;
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_print ("focus %s:\t\twindow: %ld\n",
(xevent->xany.type == FocusIn) ? "in" : "out",
xevent->xfocus.window - base_id));
event->focus_change.type = GDK_FOCUS_CHANGE;
event->focus_change.window = window;
event->focus_change.in = (xevent->xany.type == FocusIn);
return_val = window_private && !window_private->destroyed;
break;
default:
;
}
break;
case KeymapNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("keymap notify\n"));
/* Not currently handled */
break;
case Expose:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("expose:\t\twindow: %ld %d x,y: %d %d w,h: %d %d\n",
xevent->xexpose.window - base_id, xevent->xexpose.count,
xevent->xexpose.x, xevent->xexpose.y,
xevent->xexpose.width, xevent->xexpose.height));
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;
return_val = window_private && !window_private->destroyed;
break;
case GraphicsExpose:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("graphics expose:\tdrawable: %ld\n",
xevent->xgraphicsexpose.drawable - base_id));
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;
return_val = window_private && !window_private->destroyed;
break;
case NoExpose:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("no expose:\t\tdrawable: %ld\n",
xevent->xnoexpose.drawable - base_id));
event->no_expose.type = GDK_NO_EXPOSE;
event->no_expose.window = window;
return_val = window_private && !window_private->destroyed;
break;
case VisibilityNotify:
/* Print debugging info.
*/
#ifdef G_ENABLE_DEBUG
if (gdk_debug_flags & GDK_DEBUG_EVENTS)
switch (xevent->xvisibility.state)
{
case VisibilityFullyObscured:
g_print ("visibility notify:\twindow: %ld none\n",
xevent->xvisibility.window - base_id);
break;
case VisibilityPartiallyObscured:
g_print ("visibility notify:\twindow: %ld partial\n",
xevent->xvisibility.window - base_id);
break;
case VisibilityUnobscured:
g_print ("visibility notify:\twindow: %ld full\n",
xevent->xvisibility.window - base_id);
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;
}
return_val = window_private && !window_private->destroyed;
break;
case CreateNotify:
/* Not currently handled */
break;
case DestroyNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("destroy notify:\twindow: %ld\n",
xevent->xdestroywindow.window - base_id));
event->any.type = GDK_DESTROY;
event->any.window = window;
return_val = window_private && !window_private->destroyed;
gdk_window_destroy_notify (window);
break;
case UnmapNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("unmap notify:\t\twindow: %ld\n",
xevent->xmap.window - base_id));
event->any.type = GDK_UNMAP;
event->any.window = window;
if (xgrab_window == window_private)
xgrab_window = NULL;
return_val = window_private && !window_private->destroyed;
break;
case MapNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("map notify:\t\twindow: %ld\n",
xevent->xmap.window - base_id));
event->any.type = GDK_MAP;
event->any.window = window;
return_val = window_private && !window_private->destroyed;
break;
case ReparentNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("reparent notify:\twindow: %ld\n",
xevent->xreparent.window - base_id));
/* Not currently handled */
break;
case ConfigureNotify:
/* Print debugging info.
*/
while ((XPending (gdk_display) > 0) &&
XCheckTypedWindowEvent(gdk_display, xevent->xany.window,
ConfigureNotify, xevent))
/*XSync (gdk_display, 0)*/;
GDK_NOTE (EVENTS,
g_print ("configure notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d above: %ld ovr: %d\n",
xevent->xconfigure.window - base_id,
xevent->xconfigure.x,
xevent->xconfigure.y,
xevent->xconfigure.width,
xevent->xconfigure.height,
xevent->xconfigure.border_width,
xevent->xconfigure.above - base_id,
xevent->xconfigure.override_redirect));
if (window_private)
{
if ((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)
{
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)
{
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 - base_id);
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;
return_val = !window_private->destroyed;
}
}
break;
case PropertyNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("property notify:\twindow: %ld\n",
xevent->xproperty.window - base_id));
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;
return_val = window_private && !window_private->destroyed;
break;
case SelectionClear:
GDK_NOTE (EVENTS,
g_print ("selection clear:\twindow: %ld\n",
xevent->xproperty.window - base_id));
event->selection.type = GDK_SELECTION_CLEAR;
event->selection.window = window;
event->selection.selection = xevent->xselectionclear.selection;
event->selection.time = xevent->xselectionclear.time;
return_val = window_private && !window_private->destroyed;
break;
case SelectionRequest:
GDK_NOTE (EVENTS,
g_print ("selection request:\twindow: %ld\n",
xevent->xproperty.window - base_id));
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;
return_val = window_private && !window_private->destroyed;
break;
case SelectionNotify:
GDK_NOTE (EVENTS,
g_print ("selection notify:\twindow: %ld\n",
xevent->xproperty.window - base_id));
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;
return_val = window_private && !window_private->destroyed;
break;
case ColormapNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("colormap notify:\twindow: %ld\n",
xevent->xcolormap.window - base_id));
/* Not currently handled */
break;
case ClientMessage:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("client message:\twindow: %ld\n",
xevent->xclient.window - base_id));
/* Client messages are the means of the window manager
* communicating with a program. We'll first check to
* see if this is really the window manager talking
* to us.
*/
if (xevent->xclient.message_type == gdk_wm_protocols)
{
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.
*/
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("delete window:\t\twindow: %ld\n",
xevent->xclient.window - base_id));
event->any.type = GDK_DELETE;
event->any.window = window;
return_val = window_private && !window_private->destroyed;
}
else if ((Atom) xevent->xclient.data.l[0] == gdk_wm_take_focus)
{
}
}
else if (xevent->xclient.message_type == gdk_dnd.gdk_XdeEnter)
{
Atom reptype = 0;
event->dropenter.u.allflags = xevent->xclient.data.l[1];
GDK_NOTE (DND, g_print ("GDK_DROP_ENTER [%d][%d]\n",
window_private->dnd_drop_enabled, event->dropenter.u.flags.sendreply));
return_val = FALSE;
/* Now figure out if we really want this drop...
* If someone is trying funky clipboard stuff, ignore
*/
if (window_private
&& window_private->dnd_drop_enabled
&& event->dropenter.u.flags.sendreply
&& (reptype = gdk_dnd_check_types (window, xevent)))
{
XEvent replyev;
replyev.xclient.type = ClientMessage;
replyev.xclient.window = xevent->xclient.data.l[0];
replyev.xclient.format = 32;
replyev.xclient.message_type = gdk_dnd.gdk_XdeRequest;
replyev.xclient.data.l[0] = window_private->xwindow;
event->dragrequest.u.allflags = 0;
event->dragrequest.u.flags.protocol_version =
DND_PROTOCOL_VERSION;
event->dragrequest.u.flags.willaccept = 1;
event->dragrequest.u.flags.delete_data =
(window_private->dnd_drop_destructive_op) ? 1 : 0;
replyev.xclient.data.l[1] = event->dragrequest.u.allflags;
replyev.xclient.data.l[2] = replyev.xclient.data.l[3] = 0;
replyev.xclient.data.l[4] = reptype;
XSendEvent (gdk_display, replyev.xclient.window,
False, NoEventMask, &replyev);
event->any.type = GDK_DROP_ENTER;
event->any.window = window;
event->dropenter.requestor = replyev.xclient.window;
event->dropenter.u.allflags = xevent->xclient.data.l[1];
GDK_NOTE (DND, g_print("We sent a GDK_DROP_ENTER on to Gtk\n"));
return_val = TRUE;
}
}
else if (xevent->xclient.message_type == gdk_dnd.gdk_XdeLeave)
{
#ifdef G_ENABLE_DEBUG
if (gdk_debug_flags & (GDK_DEBUG_EVENTS | GDK_DEBUG_DND))
g_print ("GDK_DROP_LEAVE\n");
#endif
if (window_private && window_private->dnd_drop_enabled)
{
event->dropleave.type = GDK_DROP_LEAVE;
event->dropleave.window = window;
event->dropleave.requestor = xevent->xclient.data.l[0];
event->dropleave.u.allflags = xevent->xclient.data.l[1];
return_val = TRUE;
}
else
return_val = FALSE;
}
else if (xevent->xclient.message_type == gdk_dnd.gdk_XdeRequest)
{
/*
* make sure to only handle requests from the window the cursor is
* over
*/
#ifdef G_ENABLE_DEBUG
if (gdk_debug_flags & (GDK_DEBUG_EVENTS | GDK_DEBUG_DND))
g_print ("GDK_DRAG_REQUEST\n");
#endif
event->dragrequest.u.allflags = xevent->xclient.data.l[1];
return_val = FALSE;
if (window && gdk_dnd.drag_really &&
xevent->xclient.data.l[0] == dnd_drag_curwin &&
event->dragrequest.u.flags.sendreply == 0)
{
/* Got request - do we need to ask user? */
if (!event->dragrequest.u.flags.willaccept
&& event->dragrequest.u.flags.senddata)
{
/* Yes we do :) */
event->dragrequest.type = GDK_DRAG_REQUEST;
event->dragrequest.window = window;
event->dragrequest.requestor = xevent->xclient.data.l[0];
event->dragrequest.isdrop = 0;
event->dragrequest.drop_coords.x =
event->dragrequest.drop_coords.y = 0;
return_val = TRUE;
}
else if (event->dragrequest.u.flags.willaccept)
{
window_private->dnd_drag_destructive_op =
event->dragrequest.u.flags.delete_data;
window_private->dnd_drag_accepted = 1;
window_private->dnd_drag_data_type =
xevent->xclient.data.l[4];
gdk_dnd.dnd_drag_target = dnd_drag_curwin;
gdk_dnd_display_drag_cursor(-1, -1, TRUE, TRUE);
}
dnd_drag_dropzone.x = xevent->xclient.data.l[2] & 65535;
dnd_drag_dropzone.y =
(xevent->xclient.data.l[2] >> 16) & 65535;
dnd_drag_dropzone.width = xevent->xclient.data.l[3] & 65535;
dnd_drag_dropzone.height =
(xevent->xclient.data.l[3] >> 16) & 65535;
}
}
else if(xevent->xclient.message_type == gdk_dnd.gdk_XdeDataAvailable)
{
gint tmp_int; Atom tmp_atom;
gulong tmp_long;
guchar *tmp_charptr;
#ifdef G_ENABLE_DEBUG
if (gdk_debug_flags & (GDK_DEBUG_EVENTS | GDK_DEBUG_DND))
g_print("GDK_DROP_DATA_AVAIL\n");
#endif
event->dropdataavailable.u.allflags = xevent->xclient.data.l[1];
if(window
/* No preview of data ATM */
&& event->dropdataavailable.u.flags.isdrop)
{
event->dropdataavailable.type = GDK_DROP_DATA_AVAIL;
event->dropdataavailable.window = window;
event->dropdataavailable.requestor = xevent->xclient.data.l[0];
event->dropdataavailable.data_type =
gdk_atom_name(xevent->xclient.data.l[2]);
if(XGetWindowProperty (gdk_display,
event->dropdataavailable.requestor,
xevent->xclient.data.l[2],
0, LONG_MAX - 1,
False, XA_PRIMARY, &tmp_atom,
&tmp_int,
&event->dropdataavailable.data_numbytes,
&tmp_long,
&tmp_charptr)
!= Success)
{
g_warning("XGetWindowProperty on %#x may have failed\n",
event->dropdataavailable.requestor);
event->dropdataavailable.data = NULL;
}
else
{
GDK_NOTE (DND, g_print("XGetWindowProperty got us %ld bytes\n",
event->dropdataavailable.data_numbytes));
event->dropdataavailable.data =
g_malloc (event->dropdataavailable.data_numbytes);
memcpy (event->dropdataavailable.data,
tmp_charptr, event->dropdataavailable.data_numbytes);
XFree(tmp_charptr);
return_val = TRUE;
}
return_val = TRUE;
}
}
else
{
/* 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));
if(window)
return_val = TRUE;
else
return_val = FALSE;
}
if(window_private)
return_val = return_val && !window_private->destroyed;
break;
case MappingNotify:
/* Print debugging info.
*/
GDK_NOTE (EVENTS,
g_print ("mapping notify\n"));
/* Let XLib know that there is a new keyboard mapping.
*/
XRefreshKeyboardMapping (&xevent->xmapping);
break;
default:
/* something else - (e.g., a Xinput event) */
if (window_private &&
(window_private->extension_events != 0) &&
gdk_input_vtable.other_event)
return_val = gdk_input_vtable.other_event(event, xevent, window);
else
return_val = -1;
if (return_val < 0) /* not an XInput event, convert */
{
event->other.type = GDK_OTHER_EVENT;
event->other.window = window;
event->other.xevent = (GdkXEvent *)&other_xevent[other_xevent_i];
memcpy (&other_xevent[other_xevent_i], xevent, sizeof (XEvent));
other_xevent_i = (other_xevent_i+1) % OTHER_XEVENT_BUFSIZE;
return_val = TRUE;
}
else
return_val = return_val && !window_private->destroyed;
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;
}
#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_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);
}
/*
*--------------------------------------------------------------
* gdk_exit_func
*
* This is the "atexit" function that makes sure the
* library gets a chance to cleanup.
*
* Arguments:
*
* Results:
*
* Side effects:
* The library is un-initialized and the program exits.
*
*--------------------------------------------------------------
*/
static void
gdk_exit_func ()
{
static gboolean in_gdk_exit_func = FALSE;
/* This is to avoid an infinite loop if a program segfaults in
an atexit() handler (and yes, it does happen, especially if a program
has trounced over memory too badly for even g_print to work) */
if(in_gdk_exit_func == TRUE) return;
in_gdk_exit_func = TRUE;
if (initialized)
{
#ifdef USE_XIM
/* cleanup IC */
gdk_ic_cleanup ();
/* close IM */
gdk_im_close ();
#endif
gdk_image_exit ();
gdk_input_exit ();
gdk_key_repeat_restore ();
XCloseDisplay (gdk_display);
initialized = 0;
}
}
/*
*--------------------------------------------------------------
* gdk_x_error
*
* The X error handling routine.
*
* Arguments:
* "display" is the X display the error orignated from.
* "error" is the XErrorEvent that we are handling.
*
* Results:
* Either we were expecting some sort of error to occur,
* in which case we set the "gdk_error_code" flag, or this
* error was unexpected, in which case we will print an
* error message and exit. (Since trying to continue will
* most likely simply lead to more errors).
*
* Side effects:
*
*--------------------------------------------------------------
*/
static int
gdk_x_error (Display *display,
XErrorEvent *error)
{
char buf[64];
if (gdk_error_warnings)
{
XGetErrorText (display, error->error_code, buf, 63);
g_error ("%s", buf);
}
gdk_error_code = -1;
return 0;
}
/*
*--------------------------------------------------------------
* gdk_x_io_error
*
* The X I/O error handling routine.
*
* Arguments:
* "display" is the X display the error orignated from.
*
* Results:
* An X I/O error basically means we lost our connection
* to the X server. There is not much we can do to
* continue, so simply print an error message and exit.
*
* Side effects:
*
*--------------------------------------------------------------
*/
static int
gdk_x_io_error (Display *display)
{
g_error ("an x io error occurred");
return 0;
}
/*
*--------------------------------------------------------------
* gdk_signal
*
* The signal handler.
*
* Arguments:
* "sig_num" is the number of the signal we received.
*
* Results:
* The signals we catch are all fatal. So we simply build
* up a nice little error message and print it and exit.
* If in the process of doing so another signal is received
* we notice that we are already exiting and simply kill
* our process.
*
* Side effects:
*
*--------------------------------------------------------------
*/
static RETSIGTYPE
gdk_signal (int sig_num)
{
static int caught_fatal_sig = 0;
char *sig;
if (caught_fatal_sig)
kill (getpid (), sig_num);
caught_fatal_sig = 1;
switch (sig_num)
{
case SIGHUP:
sig = "sighup";
break;
case SIGINT:
sig = "sigint";
break;
case SIGQUIT:
sig = "sigquit";
break;
case SIGBUS:
sig = "sigbus";
break;
case SIGSEGV:
sig = "sigsegv";
break;
case SIGPIPE:
sig = "sigpipe";
break;
case SIGTERM:
sig = "sigterm";
break;
default:
sig = "unknown signal";
break;
}
g_print ("\n** ERROR **: %s caught\n", sig);
gdk_exit (1);
}
static void
gdk_dnd_drag_begin (GdkWindow *initial_window)
{
GdkEventDragBegin tev;
tev.type = GDK_DRAG_BEGIN;
tev.window = initial_window;
tev.u.allflags = 0;
tev.u.flags.protocol_version = DND_PROTOCOL_VERSION;
gdk_event_put ((GdkEvent *) &tev);
}
static void
gdk_dnd_drag_enter (Window dest)
{
XEvent sev;
GdkEventDropEnter tev;
int i;
GdkWindowPrivate *wp;
sev.xclient.type = ClientMessage;
sev.xclient.format = 32;
sev.xclient.message_type = gdk_dnd.gdk_XdeEnter;
sev.xclient.window = dest;
tev.u.allflags = 0;
tev.u.flags.protocol_version = DND_PROTOCOL_VERSION;
tev.u.flags.sendreply = 1;
for (i = 0; i < gdk_dnd.drag_numwindows; i++)
{
wp = (GdkWindowPrivate *) gdk_dnd.drag_startwindows[i];
if (wp->dnd_drag_data_numtypesavail)
{
sev.xclient.data.l[0] = wp->xwindow;
tev.u.flags.extended_typelist = (wp->dnd_drag_data_numtypesavail > 3)?1:0;
sev.xclient.data.l[1] = tev.u.allflags;
sev.xclient.data.l[2] = wp->dnd_drag_data_typesavail[0];
if (wp->dnd_drag_data_numtypesavail > 1)
{
sev.xclient.data.l[3] = wp->dnd_drag_data_typesavail[1];
if (wp->dnd_drag_data_numtypesavail > 2)
{
sev.xclient.data.l[4] = wp->dnd_drag_data_typesavail[2];
}
else
sev.xclient.data.l[4] = None;
}
else
sev.xclient.data.l[3] = sev.xclient.data.l[4] = None;
XSendEvent (gdk_display, dest, False, NoEventMask, &sev);
}
}
}
#ifdef USE_XIM
/*
*--------------------------------------------------------------
* gdk_im_begin
*
* Begin using input method with XIM Protocol(X11R6 standard)
*
* Arguments:
* "ic" is the "Input Context" which is created by gtk_ic_new.
* The input area is specified with "window".
*
* Results:
* The gdk's event handling routine is switched to XIM based routine.
* XIM based routine uses XFilterEvent to get rid of events used by IM,
* and uses XmbLookupString instead of XLookupString.
*
* Side effects:
*
*--------------------------------------------------------------
*/
void
gdk_im_begin (GdkIC ic, GdkWindow* window)
{
GdkICPrivate *private;
Window xwin;
g_return_if_fail (ic != NULL);
g_return_if_fail (window);
private = (GdkICPrivate *) ic;
xim_using = TRUE;
xim_ic = private;
xim_window = window;
if (gdk_im_ready())
{
XGetICValues (private->xic, XNFocusWindow, &xwin, NULL);
if (xwin != GDK_WINDOW_XWINDOW(window))
XSetICValues (private->xic, XNFocusWindow,
GDK_WINDOW_XWINDOW(window), NULL);
if (private != xim_ic)
XSetICFocus (private->xic);
}
}
/*
*--------------------------------------------------------------
* gdk_im_end
*
* End using input method with XIM Protocol(X11R6 standard)
*
* Arguments:
*
* Results:
* The gdk's event handling routine is switched to normal routine.
* User should call this function before ic and window will be destroyed.
*
* Side effects:
*
*--------------------------------------------------------------
*/
void
gdk_im_end (void)
{
xim_using = FALSE;
xim_ic = NULL;
xim_window = NULL;
}
static GdkIM
gdk_im_get (void)
{
return xim_im;
}
static GdkIMStyle
gdk_im_choose_better_style (GdkIMStyle style1, GdkIMStyle style2)
{
GdkIMStyle s1, s2, u;
if (style1 == 0) return style2;
if (style2 == 0) return style1;
if ((style1 & (GdkIMPreeditMask | GdkIMStatusMask))
== (style2 & (GdkIMPreeditMask | GdkIMStatusMask)))
return style1;
s1 = style1 & GdkIMPreeditMask;
s2 = style2 & GdkIMPreeditMask;
u = s1 | s2;
if (s1 != s2) {
if (u & GdkIMPreeditCallbacks)
return (s1 == GdkIMPreeditCallbacks)? style1:style2;
else if (u & GdkIMPreeditPosition)
return (s1 == GdkIMPreeditPosition)? style1:style2;
else if (u & GdkIMPreeditArea)
return (s1 == GdkIMPreeditArea)? style1:style2;
else if (u & GdkIMPreeditNothing)
return (s1 == GdkIMPreeditNothing)? style1:style2;
} else {
s1 = style1 & GdkIMStatusMask;
s2 = style2 & GdkIMStatusMask;
u = s1 | s2;
if ( u & GdkIMStatusCallbacks)
return (s1 == GdkIMStatusCallbacks)? style1:style2;
else if ( u & GdkIMStatusArea)
return (s1 == GdkIMStatusArea)? style1:style2;
else if ( u & GdkIMStatusNothing)
return (s1 == GdkIMStatusNothing)? style1:style2;
else if ( u & GdkIMStatusNone)
return (s1 == GdkIMStatusNone)? style1:style2;
}
return 0; /* Get rid of stupid warning */
}
GdkIMStyle
gdk_im_decide_style (GdkIMStyle supported_style)
{
gint i;
GdkIMStyle style, tmp;
g_return_val_if_fail (xim_styles != NULL, 0);
style = 0;
for (i=0; i<xim_styles->count_styles; i++)
{
tmp = xim_styles->supported_styles[i];
if (tmp == (tmp & supported_style & xim_best_allowed_style))
style = gdk_im_choose_better_style (style, tmp);
}
return style;
}
GdkIMStyle
gdk_im_set_best_style (GdkIMStyle style)
{
if (style & GdkIMPreeditMask)
{
xim_best_allowed_style &= ~GdkIMPreeditMask;
xim_best_allowed_style |= GdkIMPreeditNone;
if (!(style & GdkIMPreeditNone))
{
xim_best_allowed_style |= GdkIMPreeditNothing;
if (!(style & GdkIMPreeditNothing))
{
xim_best_allowed_style |= GdkIMPreeditArea;
if (!(style & GdkIMPreeditArea))
{
xim_best_allowed_style |= GdkIMPreeditPosition;
if (!(style & GdkIMPreeditPosition))
xim_best_allowed_style |= GdkIMPreeditCallbacks;
}
}
}
}
if (style & GdkIMStatusMask)
{
xim_best_allowed_style &= ~GdkIMStatusMask;
xim_best_allowed_style |= GdkIMStatusNone;
if (!(style & GdkIMStatusNone))
{
xim_best_allowed_style |= GdkIMStatusNothing;
if (!(style & GdkIMStatusNothing))
{
xim_best_allowed_style |= GdkIMStatusArea;
if (!(style & GdkIMStatusArea))
xim_best_allowed_style |= GdkIMStatusCallbacks;
}
}
}
return xim_best_allowed_style;
}
static gint
gdk_im_open (XrmDatabase db, gchar* res_name, gchar* res_class)
{
xim_im = XOpenIM (GDK_DISPLAY(), db, res_name, res_class);
if (xim_im == NULL)
{
g_warning ("Don\'t open IM.");
return FALSE;
}
XGetIMValues (xim_im, XNQueryInputStyle, &xim_styles, NULL, NULL);
return TRUE;
}
static void
gdk_im_close (void)
{
if (xim_im)
{
XCloseIM (xim_im);
xim_im = NULL;
}
if (xim_styles)
{
XFree (xim_styles);
xim_styles = NULL;
}
}
gint
gdk_im_ready (void)
{
return (xim_im != NULL);
}
GdkIC
gdk_ic_new (GdkWindow* client_window,
GdkWindow* focus_window,
GdkIMStyle style, ...)
{
va_list list;
GdkICPrivate *private;
XVaNestedList preedit_attr;
g_return_val_if_fail (client_window != NULL, NULL);
g_return_val_if_fail (focus_window != NULL, NULL);
g_return_val_if_fail (gdk_im_ready(), NULL);
private = g_new (GdkICPrivate, 1);
va_start (list, style);
preedit_attr = (XVaNestedList) & (va_arg (list, void *));
va_end (list);
private->style = gdk_im_decide_style (style);
if (private->style != style)
{
g_warning ("can not create input context with specified input style.");
g_free (private);
return NULL;
}
private->xic = XCreateIC(gdk_im_get (),
XNInputStyle, style,
XNClientWindow, GDK_WINDOW_XWINDOW (client_window),
XNFocusWindow, GDK_WINDOW_XWINDOW (focus_window),
preedit_attr? XNPreeditAttributes : NULL, preedit_attr,
NULL);
if (!private->xic)
{
g_free (private);
return NULL;
}
xim_ic_list = g_list_append (xim_ic_list, private);
return private;
}
void
gdk_ic_destroy (GdkIC ic)
{
GdkICPrivate *private;
g_return_if_fail (ic != NULL);
private = (GdkICPrivate *) ic;
if (xim_ic == private)
gdk_im_end ();
XDestroyIC (private->xic);
xim_ic_list = g_list_remove (xim_ic_list, private);
}
GdkIMStyle
gdk_ic_get_style (GdkIC ic)
{
GdkICPrivate *private;
g_return_val_if_fail (ic != NULL, 0);
private = (GdkICPrivate *) ic;
return private->style;
}
void
gdk_ic_set_values (GdkIC ic, ...)
{
va_list list;
XVaNestedList args;
GdkICPrivate *private;
g_return_if_fail (ic != NULL);
private = (GdkICPrivate *) ic;
va_start (list, ic);
args = (XVaNestedList) & (va_arg (list, void *));
va_end (list);
XSetICValues (private->xic, XNVaNestedList, args, NULL);
}
void
gdk_ic_get_values (GdkIC ic, ...)
{
va_list list;
XVaNestedList args;
GdkICPrivate *private;
g_return_if_fail (ic != NULL);
private = (GdkICPrivate *) ic;
va_start (list, ic);
args = (XVaNestedList) & (va_arg (list, void *));
va_end (list);
XGetICValues (private->xic, XNVaNestedList, args, NULL);
}
void
gdk_ic_set_attr (GdkIC ic, const char *target, ...)
{
va_list list;
XVaNestedList attr;
GdkICPrivate *private;
g_return_if_fail (ic != NULL);
g_return_if_fail (target != NULL);
private = (GdkICPrivate *) ic;
va_start (list, target);
attr = (XVaNestedList) & (va_arg (list, void *));
va_end (list);
XSetICValues (private->xic, target, attr, NULL);
}
void
gdk_ic_get_attr (GdkIC ic, const char *target, ...)
{
va_list list;
XVaNestedList attr;
GdkICPrivate *private;
g_return_if_fail (ic != NULL);
g_return_if_fail (target != NULL);
private = (GdkICPrivate *) ic;
va_start (list, target);
attr = (XVaNestedList) & (va_arg (list, void *));
va_end (list);
XGetICValues (private->xic, target, attr, NULL);
}
GdkEventMask
gdk_ic_get_events (GdkIC ic)
{
GdkEventMask mask;
glong xmask;
glong bit;
GdkICPrivate *private;
gint i;
/* From gdkwindow.c */
extern int nevent_masks;
extern int event_mask_table[];
g_return_val_if_fail (ic != NULL, 0);
private = (GdkICPrivate *) ic;
if (XGetICValues (private->xic, XNFilterEvents, &xmask, NULL) != NULL)
{
GDK_NOTE (XIM, g_warning ("Call to XGetICValues: %s failed", XNFilterEvents));
return 0;
}
mask = 0;
for (i=0, bit=2; i < nevent_masks; i++, bit <<= 1)
if (xmask & event_mask_table [i])
{
mask |= bit;
xmask &= ~ event_mask_table [i];
}
if (xmask)
g_warning ("ic requires events not supported by the application (%#04lx)", xmask);
return mask;
}
static void
gdk_ic_cleanup (void)
{
GList* node;
gint destroyed;
GdkICPrivate *private;
destroyed = 0;
for (node = xim_ic_list; node != NULL; node = node->next)
{
if (node->data)
{
private = (GdkICPrivate *) (node->data);
XDestroyIC (private->xic);
g_free (private);
destroyed++;
}
}
#ifdef G_ENABLE_DEBUG
if ((gdk_debug_flags & GDK_DEBUG_XIM) && destroyed > 0)
{
g_warning ("Cleaned up %i IC(s)\n", destroyed);
}
#endif /* G_ENABLE_DEBUG */
g_list_free(xim_ic_list);
xim_ic_list = NULL;
}
#else /* !USE_XIM */
void
gdk_im_begin (GdkIC ic, GdkWindow* window)
{
}
void
gdk_im_end (void)
{
}
GdkIMStyle
gdk_im_decide_style (GdkIMStyle supported_style)
{
return GdkIMPreeditNone | GdkIMStatusNone;
}
GdkIMStyle
gdk_im_set_best_style (GdkIMStyle style)
{
return GdkIMPreeditNone | GdkIMStatusNone;
}
gint
gdk_im_ready (void)
{
return FALSE;
}
GdkIC
gdk_ic_new (GdkWindow* client_window,
GdkWindow* focus_window,
GdkIMStyle style, ...)
{
return NULL;
}
void
gdk_ic_destroy (GdkIC ic)
{
}
GdkIMStyle
gdk_ic_get_style (GdkIC ic)
{
return GdkIMPreeditNone | GdkIMStatusNone;
}
void
gdk_ic_set_values (GdkIC ic, ...)
{
}
void
gdk_ic_get_values (GdkIC ic, ...)
{
}
void
gdk_ic_set_attr (GdkIC ic, const char *target, ...)
{
}
void
gdk_ic_get_attr (GdkIC ic, const char *target, ...)
{
}
GdkEventMask
gdk_ic_get_events (GdkIC ic)
{
return 0;
}
#endif /* USE_XIM */
#ifdef X_LOCALE
gint
_g_mbtowc (wchar_t *wstr, const char *str, size_t len)
{
static wchar_t wcs[MB_CUR_MAX + 1];
static gchar mbs[MB_CUR_MAX + 1];
wcs[0] = (wchar_t) NULL;
mbs[0] = '\0';
len = _Xmbstowcs (wcs, str, (len<MB_CUR_MAX)? len:MB_CUR_MAX);
if (len < 1)
return len;
else if (wcs[0] == (wchar_t) NULL)
return -1;
len = _Xwctomb (mbs, wcs[0]);
if (mbs[0] == '\0')
return -1;
if (wstr)
*wstr = wcs[0];
return len;
}
#endif /* X_LOCALE */
static void
gdk_dnd_drag_leave (Window dest)
{
XEvent sev;
GdkEventDropLeave tev;
int i;
GdkWindowPrivate *wp;
tev.u.allflags = 0;
tev.u.flags.protocol_version = DND_PROTOCOL_VERSION;
sev.xclient.type = ClientMessage;
sev.xclient.window = dest;
sev.xclient.format = 32;
sev.xclient.message_type = gdk_dnd.gdk_XdeLeave;
sev.xclient.data.l[1] = tev.u.allflags;
for (i = 0; i < gdk_dnd.drag_numwindows; i++)
{
wp = (GdkWindowPrivate *) gdk_dnd.drag_startwindows[i];
sev.xclient.data.l[0] = wp->xwindow;
XSendEvent(gdk_display, dest, False, NoEventMask, &sev);
wp->dnd_drag_accepted = 0;
}
}
/*
* when a drop occurs, we go through the list of windows being dragged and
* tell them that it has occurred, so that they can set things up and reply
* to 'dest' window
*/
static void
gdk_dnd_drag_end (Window dest,
GdkPoint coords)
{
GdkWindowPrivate *wp;
GdkEventDragRequest tev;
int i;
tev.type = GDK_DRAG_REQUEST;
tev.drop_coords = coords;
tev.requestor = dest;
tev.u.allflags = 0;
tev.u.flags.protocol_version = DND_PROTOCOL_VERSION;
tev.isdrop = 1;
for (i = 0; i < gdk_dnd.drag_numwindows; i++)
{
wp = (GdkWindowPrivate *) gdk_dnd.drag_startwindows[i];
if (wp->dnd_drag_accepted)
{
tev.window = (GdkWindow *) wp;
tev.u.flags.delete_data = wp->dnd_drag_destructive_op;
tev.data_type =
gdk_atom_name(wp->dnd_drag_data_type);
gdk_event_put((GdkEvent *) &tev);
}
}
}
static GdkAtom
gdk_dnd_check_types (GdkWindow *window,
XEvent *xevent)
{
GdkWindowPrivate *wp = (GdkWindowPrivate *) window;
int i, j;
GdkEventDropEnter event;
g_return_val_if_fail(window != NULL, 0);
g_return_val_if_fail(xevent != NULL, 0);
g_return_val_if_fail(xevent->type == ClientMessage, 0);
g_return_val_if_fail(xevent->xclient.message_type == gdk_dnd.gdk_XdeEnter, 0);
if(wp->dnd_drop_data_numtypesavail <= 0 ||
!wp->dnd_drop_data_typesavail)
return 0;
for (i = 2; i <= 4; i++)
{
for (j = 0; j < wp->dnd_drop_data_numtypesavail; j++)
{
if (xevent->xclient.data.l[i] == wp->dnd_drop_data_typesavail[j])
return xevent->xclient.data.l[i];
}
}
/* Now we get the extended type list if it's available */
event.u.allflags = xevent->xclient.data.l[1];
if (event.u.flags.extended_typelist)
{
Atom *exttypes, realtype;
gulong nitems, nbar;
gint realfmt;
if (XGetWindowProperty(gdk_display, xevent->xclient.data.l[0],
gdk_dnd.gdk_XdeTypelist, 0L, LONG_MAX - 1,
False, AnyPropertyType, &realtype, &realfmt,
&nitems, &nbar, (unsigned char **) &exttypes)
!= Success)
return 0;
if (realfmt != (sizeof(Atom) * 8))
{
g_warning("XdeTypelist property had format of %d instead of the expected %d, on window %#lx\n",
realfmt, sizeof(Atom) * 8, xevent->xclient.data.l[0]);
return 0;
}
for (i = 0; i <= nitems; i++)
{
for (j = 0; j < wp->dnd_drop_data_numtypesavail; j++)
{
if (exttypes[i] == wp->dnd_drop_data_typesavail[j])
{
XFree (exttypes);
return exttypes[i];
}
}
}
XFree (exttypes);
}
return 0;
}
/*
* used for debugging only
*/
#ifdef DEBUG_DND
static void
gdk_print_atom (GdkAtom anatom)
{
gchar *tmpstr = NULL;
tmpstr = (anatom!=None)?gdk_atom_name(anatom):"(none)";
g_print("Atom %lu has name %s\n", anatom, tmpstr);
if(tmpstr)
g_free(tmpstr);
}
#endif
/*
* used only by below routine and itself
*/
static Window
getchildren (Display *dpy,
Window win,
Atom WM_STATE)
{
Window root, parent, *children, inf = 0;
Atom type = None;
unsigned int nchildren, i;
int format;
unsigned long nitems, after;
unsigned char *data;
if (XQueryTree(dpy, win, &root, &parent, &children, &nchildren) == 0)
return 0;
for (i = 0; !inf && (i < nchildren); i++)
{
XGetWindowProperty (dpy, children[i], WM_STATE, 0, 0, False,
AnyPropertyType, &type, &format, &nitems,
&after, &data);
if (type != 0)
inf = children[i];
XFree(data);
}
for (i = 0; !inf && (i < nchildren); i++)
inf = getchildren (dpy, children[i], WM_STATE);
if (children != None)
XFree ((char *) children);
return inf;
}
/*
* find a window with WM_STATE, else return win itself, as per ICCCM
*
* modification of the XmuClientWindow() routine from X11R6.3
*/
Window
gdk_get_client_window (Display *dpy,
Window win)
{
Atom WM_STATE;
Atom type = None;
int format;
unsigned long nitems, after;
unsigned char *data;
Window inf;
if (win == 0)
return DefaultRootWindow(dpy);
if ((WM_STATE = XInternAtom (dpy, "WM_STATE", True)) == 0)
return win;
XGetWindowProperty (dpy, win, WM_STATE, 0, 0, False, AnyPropertyType,
&type, &format, &nitems, &after, &data);
if (type)
return win;
inf = getchildren (dpy, win, WM_STATE);
if (inf == 0)
return win;
else
return inf;
}
#ifdef WE_HAVE_MOTIF_DROPS_DONE
static GdkWindow *
gdk_drop_get_real_window (GdkWindow *w,
guint16 *x,
guint16 *y)
{
GdkWindow *retval = w;
GdkWindowPrivate *awin;
GList *children;
gint16 myx = *x, myy = *y;
g_return_val_if_fail(w != NULL && x != NULL && y != NULL, NULL);
myx = *x;
myy = *y;
descend:
for (children = gdk_window_get_children(retval);
children && children->next;
children = children->next)
{
awin = (GdkWindowPrivate *) children->data;
if ((myx >= awin->x) && (myy >= awin->y)
&& (myx < (awin->x + awin->width))
&& (myy < (awin->y + awin->height)))
{
retval = (GdkWindow *) awin;
myx -= awin->x;
myy -= awin->y;
goto descend;
}
}
*x = myx;
*y = myy;
return retval;
}
#endif
/* Sends a ClientMessage to all toplevel client windows */
void
gdk_event_send_clientmessage_toall(GdkEvent *event)
{
XEvent sev;
Window *ret_children, ret_root, ret_parent, curwin;
unsigned int ret_nchildren;
int i;
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;
sev.xclient.serial = CurrentTime;
memcpy(&sev.xclient.data, &event->client.data, sizeof(sev.xclient.data));
sev.xclient.message_type = event->client.message_type;
/* OK, we're all set, now let's find some windows to send this to */
if(XQueryTree(gdk_display, gdk_root_window, &ret_root, &ret_parent,
&ret_children, &ret_nchildren) != True)
return;
/* foreach true child window of the root window, send an event to it */
for(i = 0; i < ret_nchildren; i++) {
curwin = gdk_get_client_window(gdk_display, ret_children[i]);
sev.xclient.window = curwin;
XSendEvent(gdk_display, curwin, False, NoEventMask, &sev);
}
XFree(ret_children);
}
gchar *
gdk_get_display(void)
{
return (gchar *)XDisplayName (gdk_display_name);
}
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