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gtk/gdk/directfb/gdkevents-directfb.c
Lionel Landwerlin 4509240d0e directfb: fix gdk_directfb_child_at 
When GDK looks for the window under pointer, the gdk-directfb backend
looks at windows starting from the root window to the upper window in
the stack. For this, it looks at window's size and position. This
patch fix the assumption that windows are always natives windows from
which we can retrieve backend's private data.

Signed-off-by: Lionel Landwerlin <llandwerlin@gmail.com>
2010-08-31 21:08:21 +02:00

801 lines
22 KiB
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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 Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team.
*/
/*
* GTK+ DirectFB backend
* Copyright (C) 2001-2002 convergence integrated media GmbH
* Copyright (C) 2002-2004 convergence GmbH
* Written by Denis Oliver Kropp <dok@convergence.de> and
* Sven Neumann <sven@convergence.de>
*/
#include "config.h"
#include "gdk.h"
#include "gdkdirectfb.h"
#include "gdkprivate-directfb.h"
#include "gdkinternals.h"
#include "gdkkeysyms.h"
#include "gdkinput-directfb.h"
#include <string.h>
#ifndef __GDK_X_H__
#define __GDK_X_H__
gboolean gdk_net_wm_supports (GdkAtom property);
#endif
#include "gdkalias.h"
#define EventBuffer _gdk_display->buffer
#define DirectFB _gdk_display->directfb
#include "gdkaliasdef.c"
D_DEBUG_DOMAIN (GDKDFB_Events, "GDKDFB/Events", "GDK DirectFB Events");
D_DEBUG_DOMAIN (GDKDFB_MouseEvents, "GDKDFB/Events/Mouse", "GDK DirectFB Mouse Events");
D_DEBUG_DOMAIN (GDKDFB_WindowEvents, "GDKDFB/Events/Window", "GDK DirectFB Window Events");
D_DEBUG_DOMAIN (GDKDFB_KeyEvents, "GDKDFB/Events/Key", "GDK DirectFB Key Events");
/*********************************************
* Functions for maintaining the event queue *
*********************************************/
static gboolean gdk_event_translate (GdkEvent *event,
DFBWindowEvent *dfbevent,
GdkWindow *window);
/*
* Private variable declarations
*/
static GList *client_filters; /* Filters for client messages */
static gint
gdk_event_apply_filters (DFBWindowEvent *dfbevent,
GdkEvent *event,
GList *filters)
{
GList *tmp_list;
GdkFilterReturn result;
tmp_list = filters;
while (tmp_list)
{
GdkEventFilter *filter = (GdkEventFilter*) tmp_list->data;
tmp_list = tmp_list->next;
result = filter->function (dfbevent, event, filter->data);
if (result != GDK_FILTER_CONTINUE)
return result;
}
return GDK_FILTER_CONTINUE;
}
static void
dfb_events_process_window_event (DFBWindowEvent *dfbevent)
{
GdkDisplay *display = gdk_display_get_default ();
GdkWindow *window;
GdkEvent *event;
GList *node;
window = gdk_directfb_window_id_table_lookup (dfbevent->window_id);
if (!window)
return;
event = gdk_event_new (GDK_NOTHING);
event->any.window = NULL;
((GdkEventPrivate *)event)->flags |= GDK_EVENT_PENDING;
node = _gdk_event_queue_append (display, event);
if (gdk_event_translate (event, dfbevent, window))
{
((GdkEventPrivate *)event)->flags &= ~GDK_EVENT_PENDING;
_gdk_windowing_got_event (display, node, event, 0);
}
else
{
_gdk_event_queue_remove_link (display, node);
g_list_free_1 (node);
gdk_event_free (event);
}
}
static gboolean
gdk_event_send_client_message_by_window (GdkEvent *event,
GdkWindow *window)
{
DFBUserEvent evt;
g_return_val_if_fail(event != NULL, FALSE);
g_return_val_if_fail(GDK_IS_WINDOW(window), FALSE);
evt.clazz = DFEC_USER;
evt.type = GPOINTER_TO_UINT (GDK_ATOM_TO_POINTER (event->client.message_type));
evt.data = (void *) event->client.data.l[0];
_gdk_display->buffer->PostEvent (_gdk_display->buffer, DFB_EVENT (&evt));
return TRUE;
}
static void
dfb_events_dispatch (void)
{
GdkDisplay *display = gdk_display_get_default ();
GdkEvent *event;
GDK_THREADS_ENTER ();
while ((event = _gdk_event_unqueue (display)) != NULL)
{
if (_gdk_event_func)
(*_gdk_event_func) (event, _gdk_event_data);
gdk_event_free (event);
}
GDK_THREADS_LEAVE ();
}
static gboolean
dfb_events_io_func (GIOChannel *channel,
GIOCondition condition,
gpointer data)
{
gsize i;
gsize read;
GIOStatus result;
DFBEvent buf[23];
DFBEvent *event;
result = g_io_channel_read_chars (channel,
(gchar *) buf, sizeof (buf), &read, NULL);
if (result == G_IO_STATUS_ERROR)
{
g_warning ("%s: GIOError occured", G_STRFUNC);
return TRUE;
}
read /= sizeof (DFBEvent);
for (i = 0, event = buf; i < read; i++, event++)
{
switch (event->clazz)
{
case DFEC_WINDOW:
/* TODO workaround to prevent two DWET_ENTER in a row from being delivered */
if (event->window.type == DWET_ENTER) {
if (i > 0 && buf[i - 1].window.type != DWET_ENTER)
dfb_events_process_window_event (&event->window);
}
else
dfb_events_process_window_event (&event->window);
break;
case DFEC_USER:
{
GList *list;
GDK_NOTE (EVENTS, g_print (" client_message"));
for (list = client_filters; list; list = list->next)
{
GdkClientFilter *filter = list->data;
DFBUserEvent *user_event = (DFBUserEvent *) event;
GdkAtom type;
type = GDK_POINTER_TO_ATOM (GUINT_TO_POINTER (user_event->type));
if (filter->type == type)
{
if (filter->function (user_event,
NULL,
filter->data) != GDK_FILTER_CONTINUE)
break;
}
}
}
break;
default:
break;
}
}
EventBuffer->Reset (EventBuffer);
dfb_events_dispatch ();
return TRUE;
}
void
_gdk_events_init (void)
{
GIOChannel *channel;
GSource *source;
DFBResult ret;
gint fd;
ret = DirectFB->CreateEventBuffer (DirectFB, &EventBuffer);
if (ret)
{
DirectFBError ("_gdk_events_init: "
"IDirectFB::CreateEventBuffer() failed", ret);
return;
}
ret = EventBuffer->CreateFileDescriptor (EventBuffer, &fd);
if (ret)
{
DirectFBError ("_gdk_events_init: "
"IDirectFBEventBuffer::CreateFileDescriptor() failed",
ret);
return;
}
channel = g_io_channel_unix_new (fd);
g_io_channel_set_encoding (channel, NULL, NULL);
g_io_channel_set_buffered (channel, FALSE);
source = g_io_create_watch (channel, G_IO_IN);
g_source_set_priority (source, G_PRIORITY_DEFAULT);
g_source_set_can_recurse (source, TRUE);
g_source_set_callback (source, (GSourceFunc) dfb_events_io_func, NULL, NULL);
g_source_attach (source, NULL);
g_source_unref (source);
}
gboolean
gdk_events_pending (void)
{
GdkDisplay *display = gdk_display_get_default ();
return _gdk_event_queue_find_first (display) ? TRUE : FALSE;
}
GdkEvent *
gdk_event_get_graphics_expose (GdkWindow *window)
{
GdkDisplay *display;
GList *list;
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
display = gdk_drawable_get_display (GDK_DRAWABLE (window));
for (list = _gdk_event_queue_find_first (display); list; list = list->next)
{
GdkEvent *event = list->data;
if (event->type == GDK_EXPOSE && event->expose.window == window)
break;
}
if (list)
{
GdkEvent *retval = list->data;
_gdk_event_queue_remove_link (display, list);
g_list_free_1 (list);
return retval;
}
return NULL;
}
void
_gdk_events_queue (GdkDisplay *display)
{
}
void
gdk_flush (void)
{
gdk_display_flush (GDK_DISPLAY_OBJECT (_gdk_display));
}
/* Sends a ClientMessage to all toplevel client windows */
gboolean
gdk_event_send_client_message_for_display (GdkDisplay *display,
GdkEvent *event,
guint32 xid)
{
GdkWindow *win = NULL;
gboolean ret = TRUE;
g_return_val_if_fail (event != NULL, FALSE);
win = gdk_window_lookup_for_display (display, (GdkNativeWindow) xid);
g_return_val_if_fail (win != NULL, FALSE);
if ((GDK_WINDOW_OBJECT (win)->window_type != GDK_WINDOW_CHILD) &&
(g_object_get_data (G_OBJECT (win), "gdk-window-child-handler")))
{
/* Managed window, check children */
GList *ltmp = NULL;
for (ltmp = GDK_WINDOW_OBJECT (win)->children; ltmp; ltmp = ltmp->next)
{
ret &= gdk_event_send_client_message_by_window (event,
GDK_WINDOW(ltmp->data));
}
}
else
{
ret &= gdk_event_send_client_message_by_window (event, win);
}
return ret;
}
/*****/
guint32
gdk_directfb_get_time (void)
{
GTimeVal tv;
g_get_current_time (&tv);
return (guint32) tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
void
gdk_directfb_event_windows_add (GdkWindow *window)
{
GdkWindowImplDirectFB *impl;
g_return_if_fail (GDK_IS_WINDOW (window));
impl = GDK_WINDOW_IMPL_DIRECTFB (GDK_WINDOW_OBJECT (window)->impl);
if (!impl->window)
return;
if (EventBuffer)
impl->window->AttachEventBuffer (impl->window, EventBuffer);
else
impl->window->CreateEventBuffer (impl->window, &EventBuffer);
}
void
gdk_directfb_event_windows_remove (GdkWindow *window)
{
GdkWindowImplDirectFB *impl;
g_return_if_fail (GDK_IS_WINDOW (window));
impl = GDK_WINDOW_IMPL_DIRECTFB (GDK_WINDOW_OBJECT (window)->impl);
if (!impl->window)
return;
if (EventBuffer)
impl->window->DetachEventBuffer (impl->window, EventBuffer);
/* FIXME: should we warn if (! EventBuffer) ? */
}
GdkWindow *
gdk_directfb_child_at (GdkWindow *window,
gint *winx,
gint *winy)
{
GdkWindowObject *private;
GList *list;
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
private = GDK_WINDOW_OBJECT (window);
for (list = private->children; list; list = list->next)
{
GdkWindowObject *win = list->data;
gint wx, wy, ww, wh;
gdk_window_get_geometry (GDK_WINDOW (win), &wx, &wy, &ww, &wh, NULL);
if (GDK_WINDOW_IS_MAPPED (win) &&
*winx >= wx && *winx < wx + ww &&
*winy >= wy && *winy < wy + wh)
{
*winx -= win->x;
*winy -= win->y;
return gdk_directfb_child_at (GDK_WINDOW (win), winx, winy);
}
}
return window;
}
static gboolean
gdk_event_translate (GdkEvent *event,
DFBWindowEvent *dfbevent,
GdkWindow *window)
{
GdkWindowObject *private;
GdkDisplay *display;
/* GdkEvent *event = NULL; */
gboolean return_val = FALSE;
g_return_val_if_fail (event != NULL, FALSE);
g_return_val_if_fail (dfbevent != NULL, FALSE);
g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
D_DEBUG_AT (GDKDFB_Events, "%s( %p, %p, %p )\n", G_STRFUNC,
event, dfbevent, window);
private = GDK_WINDOW_OBJECT (window);
g_object_ref (G_OBJECT (window));
event->any.window = NULL;
event->any.send_event = FALSE;
/*
* Apply global filters
*
* If result is GDK_FILTER_CONTINUE, we continue as if nothing
* happened. If it is GDK_FILTER_REMOVE or GDK_FILTER_TRANSLATE,
* we return TRUE and won't dispatch the event.
*/
if (_gdk_default_filters)
{
GdkFilterReturn result;
result = gdk_event_apply_filters (dfbevent, event, _gdk_default_filters);
if (result != GDK_FILTER_CONTINUE)
{
return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
goto done;
}
}
/* Apply per-window filters */
if (GDK_IS_WINDOW (window))
{
GdkFilterReturn result;
if (private->filters)
{
result = gdk_event_apply_filters (dfbevent, event, private->filters);
if (result != GDK_FILTER_CONTINUE)
{
return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
goto done;
}
}
}
display = gdk_drawable_get_display (GDK_DRAWABLE (window));
return_val = TRUE;
switch (dfbevent->type)
{
case DWET_BUTTONDOWN:
case DWET_BUTTONUP:
/* Backend store */
_gdk_directfb_mouse_x = dfbevent->cx;
_gdk_directfb_mouse_y = dfbevent->cy;
/* Event translation */
gdk_directfb_event_fill (event, window,
dfbevent->type == DWET_BUTTONDOWN ?
GDK_BUTTON_PRESS : GDK_BUTTON_RELEASE);
switch (dfbevent->button)
{
case DIBI_LEFT:
event->button.button = 1;
break;
case DIBI_MIDDLE:
event->button.button = 2;
break;
case DIBI_RIGHT:
event->button.button = 3;
break;
default:
event->button.button = dfbevent->button + 1;
break;
}
event->button.window = window;
event->button.x_root = dfbevent->cx;
event->button.y_root = dfbevent->cy;
event->button.x = dfbevent->x;
event->button.y = dfbevent->y;
event->button.state = _gdk_directfb_modifiers;
event->button.device = display->core_pointer;
gdk_event_set_screen (event, _gdk_screen);
D_DEBUG_AT (GDKDFB_MouseEvents, " -> %s at %ix%i\n",
event->type == GDK_BUTTON_PRESS ? "buttonpress" : "buttonrelease",
(gint) event->button.x, (gint) event->button.y);
break;
case DWET_MOTION:
/* Backend store */
_gdk_directfb_mouse_x = dfbevent->cx;
_gdk_directfb_mouse_y = dfbevent->cy;
/* Event translation */
gdk_directfb_event_fill (event, window, GDK_MOTION_NOTIFY);
event->motion.x_root = dfbevent->cx;
event->motion.y_root = dfbevent->cy;
event->motion.x = dfbevent->x;
event->motion.y = dfbevent->y;
event->motion.axes = NULL;
event->motion.state = _gdk_directfb_modifiers;
event->motion.is_hint = FALSE;
event->motion.device = display->core_pointer;
gdk_event_set_screen (event, _gdk_screen);
D_DEBUG_AT (GDKDFB_MouseEvents, " -> move pointer to %ix%i\n",
(gint) event->button.x, (gint) event->button.y);
break;
case DWET_GOTFOCUS:
gdk_directfb_event_fill (event, window, GDK_FOCUS_CHANGE);
event->focus_change.window = window;
event->focus_change.in = TRUE;
break;
case DWET_LOSTFOCUS:
gdk_directfb_event_fill (event, window, GDK_FOCUS_CHANGE);
event->focus_change.window = window;
event->focus_change.in = FALSE;
break;
case DWET_POSITION:
gdk_directfb_event_fill (event, window, GDK_CONFIGURE);
event->configure.x = dfbevent->x;
event->configure.y = dfbevent->y;
event->configure.width = private->width;
event->configure.height = private->height;
break;
case DWET_POSITION_SIZE:
event->configure.x = dfbevent->x;
event->configure.y = dfbevent->y;
/* fallthru */
case DWET_SIZE:
gdk_directfb_event_fill (event, window, GDK_CONFIGURE);
event->configure.window = window;
event->configure.width = dfbevent->w;
event->configure.height = dfbevent->h;
D_DEBUG_AT (GDKDFB_WindowEvents,
" -> configure window %p at %ix%i-%ix%i\n",
window, event->configure.x, event->configure.y,
event->configure.width, event->configure.height);
break;
case DWET_KEYDOWN:
case DWET_KEYUP:
gdk_directfb_event_fill (event, window,
dfbevent->type == DWET_KEYUP ?
GDK_KEY_RELEASE : GDK_KEY_PRESS);
event->key.window = window;
gdk_directfb_translate_key_event (dfbevent, (GdkEventKey *) event);
D_DEBUG_AT (GDKDFB_KeyEvents, " -> key window=%p val=%x code=%x str=%s\n",
window, event->key.keyval, event->key.hardware_keycode,
event->key.string);
break;
case DWET_ENTER:
case DWET_LEAVE:
/* Backend store */
_gdk_directfb_mouse_x = dfbevent->cx;
_gdk_directfb_mouse_y = dfbevent->cy;
/* Event translation */
gdk_directfb_event_fill (event, window,
dfbevent->type == DWET_ENTER ?
GDK_ENTER_NOTIFY : GDK_LEAVE_NOTIFY);
event->crossing.window = g_object_ref (window);
event->crossing.subwindow = NULL;
event->crossing.time = GDK_CURRENT_TIME;
event->crossing.x = dfbevent->x;
event->crossing.y = dfbevent->y;
event->crossing.x_root = dfbevent->cx;
event->crossing.y_root = dfbevent->cy;
event->crossing.mode = GDK_CROSSING_NORMAL;
event->crossing.detail = GDK_NOTIFY_ANCESTOR;
event->crossing.state = 0;
/**/
if (gdk_directfb_apply_focus_opacity)
{
if (dfbevent->type == DWET_ENTER)
{
if (GDK_WINDOW_IS_MAPPED (window))
GDK_WINDOW_IMPL_DIRECTFB (private->impl)->window->SetOpacity
(GDK_WINDOW_IMPL_DIRECTFB (private->impl)->window,
(GDK_WINDOW_IMPL_DIRECTFB (private->impl)->opacity >> 1) +
(GDK_WINDOW_IMPL_DIRECTFB (private->impl)->opacity >> 2));
}
else
{
GDK_WINDOW_IMPL_DIRECTFB (private->impl)->window->SetOpacity
(GDK_WINDOW_IMPL_DIRECTFB (private->impl)->window,
GDK_WINDOW_IMPL_DIRECTFB (private->impl)->opacity);
}
}
D_DEBUG_AT (GDKDFB_WindowEvents, " -> %s window %p at relative=%ix%i absolute=%ix%i\n",
dfbevent->type == DWET_ENTER ? "enter" : "leave",
window, (gint) event->crossing.x, (gint) event->crossing.y,
(gint) event->crossing.x_root, (gint) event->crossing.y_root);
break;
case DWET_CLOSE:
gdk_directfb_event_fill (event, window, GDK_DELETE);
break;
case DWET_DESTROYED:
gdk_directfb_event_fill (event, window, GDK_DESTROY);
gdk_window_destroy_notify (window);
break;
case DWET_WHEEL:
/* Backend store */
_gdk_directfb_mouse_x = dfbevent->cx;
_gdk_directfb_mouse_y = dfbevent->cy;
/* Event translation */
gdk_directfb_event_fill (event, window, GDK_SCROLL);
event->scroll.direction = (dfbevent->step > 0 ?
GDK_SCROLL_UP : GDK_SCROLL_DOWN);
event->scroll.x_root = dfbevent->cx;
event->scroll.y_root = dfbevent->cy;
event->scroll.x = dfbevent->x;
event->scroll.y = dfbevent->y;
event->scroll.state = _gdk_directfb_modifiers;
event->scroll.device = display->core_pointer;
D_DEBUG_AT (GDKDFB_MouseEvents, " -> mouse scroll %s at %ix%i\n",
event->scroll.direction == GDK_SCROLL_UP ? "up" : "down",
(gint) event->scroll.x, (gint) event->scroll.y);
break;
default:
g_message ("unhandled DirectFB windowing event 0x%08x", dfbevent->type);
}
done:
g_object_unref (G_OBJECT (window));
return return_val;
}
gboolean
gdk_screen_get_setting (GdkScreen *screen,
const gchar *name,
GValue *value)
{
return FALSE;
}
void
gdk_display_add_client_message_filter (GdkDisplay *display,
GdkAtom message_type,
GdkFilterFunc func,
gpointer data)
{
/* XXX: display should be used */
GdkClientFilter *filter = g_new (GdkClientFilter, 1);
filter->type = message_type;
filter->function = func;
filter->data = data;
client_filters = g_list_append (client_filters, filter);
}
void
gdk_add_client_message_filter (GdkAtom message_type,
GdkFilterFunc func,
gpointer data)
{
gdk_display_add_client_message_filter (gdk_display_get_default (),
message_type, func, data);
}
void
gdk_screen_broadcast_client_message (GdkScreen *screen,
GdkEvent *sev)
{
GdkWindow *root_window;
GdkWindowObject *private;
GList *top_level = NULL;
g_return_if_fail (GDK_IS_SCREEN (screen));
g_return_if_fail (sev != NULL);
root_window = gdk_screen_get_root_window (screen);
g_return_if_fail (GDK_IS_WINDOW (root_window));
private = GDK_WINDOW_OBJECT (root_window);
for (top_level = private->children; top_level; top_level = top_level->next)
{
gdk_event_send_client_message_for_display (gdk_drawable_get_display (GDK_DRAWABLE (root_window)),
sev,
(guint32)(GDK_WINDOW_DFB_ID (GDK_WINDOW (top_level->data))));
}
}
/**
* gdk_net_wm_supports:
* @property: a property atom.
*
* This function is specific to the X11 backend of GDK, and indicates
* whether the window manager for the default screen supports a certain
* hint from the Extended Window Manager Hints Specification. See
* gdk_x11_screen_supports_net_wm_hint() for complete details.
*
* Return value: %TRUE if the window manager supports @property
**/
gboolean
gdk_net_wm_supports (GdkAtom property)
{
return FALSE;
}
void
_gdk_windowing_event_data_copy (const GdkEvent *src,
GdkEvent *dst)
{
}
void
_gdk_windowing_event_data_free (GdkEvent *event)
{
}
#define __GDK_EVENTS_X11_C__
#include "gdkaliasdef.c"
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