+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 1995-1999 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#include "config.h"
+
+#include "gdkx11dnd.h"
+#include "gdkdndprivate.h"
+
+#include "gdkmain.h"
+#include "gdkinternals.h"
+#include "gdkasync.h"
+#include "gdkproperty.h"
+#include "gdkprivate-x11.h"
+#include "gdkscreen-x11.h"
+#include "gdkdisplay-x11.h"
+
#include <X11/Xlib.h>
+#include <X11/Xutil.h>
#include <X11/Xatom.h>
+#include <X11/extensions/shape.h>
+#ifdef HAVE_XCOMPOSITE
+#include <X11/extensions/Xcomposite.h>
+#endif
+
#include <string.h>
-#include "gdkx.h"
-#include "gdk.h"
-/* Nothing much here now, but we have to make a start some time ;-) */
+typedef enum {
+ GDK_DRAG_STATUS_DRAG,
+ GDK_DRAG_STATUS_MOTION_WAIT,
+ GDK_DRAG_STATUS_ACTION_WAIT,
+ GDK_DRAG_STATUS_DROP
+} GtkDragStatus;
-void
-gdk_dnd_set_drag_cursors(GdkCursor *default_cursor, GdkCursor *goahead_cursor)
-{
- gdk_dnd.c->gdk_cursor_dragdefault =
- ((GdkCursorPrivate *)default_cursor)->xcursor;
- gdk_dnd.c->gdk_cursor_dragok = ((GdkCursorPrivate *)goahead_cursor)->xcursor;
-
- if(gdk_dnd.dnd_grabbed)
- {
- if(gdk_dnd.c->drag_pm_default)
- /* We were displaying pixmaps for the drag */
- {
- gdk_window_hide(gdk_dnd.c->drag_pm_default);
- gdk_window_unref(gdk_dnd.c->drag_pm_default);
- if(gdk_dnd.c->drag_pm_ok)
- {
- gdk_window_hide(gdk_dnd.c->drag_pm_ok);
- gdk_window_unref(gdk_dnd.c->drag_pm_ok);
- }
- gdk_dnd.c->drag_pm_default = gdk_dnd.c->drag_pm_ok = NULL;
- g_list_free(gdk_dnd.c->xids);
- gdk_dnd.c->xids = NULL;
- }
- gdk_dnd_display_drag_cursor(-1, -1,
- gdk_dnd.dnd_drag_target?TRUE:FALSE,
- TRUE);
+typedef struct {
+ guint32 xid;
+ gint x, y, width, height;
+ gboolean mapped;
+ gboolean shape_selected;
+ gboolean shape_valid;
+ cairo_region_t *shape;
+} GdkCacheChild;
+
+typedef struct {
+ GList *children;
+ GHashTable *child_hash;
+ guint old_event_mask;
+ GdkScreen *screen;
+ gint ref_count;
+} GdkWindowCache;
+
+
+struct _GdkX11DragContext
+{
+ GdkDragContext context;
+
+ guint ref_count;
+
+ guint16 last_x; /* Coordinates from last event */
+ guint16 last_y;
+ GdkDragAction old_action; /* The last action we sent to the source */
+ GdkDragAction old_actions; /* The last actions we sent to the source */
+ GdkDragAction xdnd_actions; /* What is currently set in XdndActionList */
+ guint version; /* Xdnd protocol version */
+
+ GSList *window_caches;
+
+ Window dest_xid; /* The last window we looked up */
+ Window drop_xid; /* The (non-proxied) window that is receiving drops */
+ guint xdnd_targets_set : 1; /* Whether we've already set XdndTypeList */
+ guint xdnd_actions_set : 1; /* Whether we've already set XdndActionList */
+ guint xdnd_have_actions : 1; /* Whether an XdndActionList was provided */
+ guint drag_status : 4; /* current status of drag */
+ guint drop_failed : 1; /* Whether the drop was unsuccessful */
+};
+
+struct _GdkX11DragContextClass
+{
+ GdkDragContextClass parent_class;
+};
+
+/* Forward declarations */
+
+static GdkWindowCache *gdk_window_cache_get (GdkScreen *screen);
+static GdkWindowCache *gdk_window_cache_ref (GdkWindowCache *cache);
+static void gdk_window_cache_unref (GdkWindowCache *cache);
+
+static GdkFilterReturn xdnd_enter_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data);
+static GdkFilterReturn xdnd_leave_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data);
+static GdkFilterReturn xdnd_position_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data);
+static GdkFilterReturn xdnd_status_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data);
+static GdkFilterReturn xdnd_finished_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data);
+static GdkFilterReturn xdnd_drop_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data);
+
+static void xdnd_manage_source_filter (GdkDragContext *context,
+ GdkWindow *window,
+ gboolean add_filter);
+
+static GList *contexts;
+static GSList *window_caches;
+
+static const struct {
+ const char *atom_name;
+ GdkFilterFunc func;
+} xdnd_filters[] = {
+ { "XdndEnter", xdnd_enter_filter },
+ { "XdndLeave", xdnd_leave_filter },
+ { "XdndPosition", xdnd_position_filter },
+ { "XdndStatus", xdnd_status_filter },
+ { "XdndFinished", xdnd_finished_filter },
+ { "XdndDrop", xdnd_drop_filter },
+};
+
+
+G_DEFINE_TYPE (GdkX11DragContext, gdk_x11_drag_context, GDK_TYPE_DRAG_CONTEXT)
+
+static void
+gdk_x11_drag_context_init (GdkX11DragContext *context)
+{
+ contexts = g_list_prepend (contexts, context);
+}
+
+static void gdk_x11_drag_context_finalize (GObject *object);
+static GdkWindow * gdk_x11_drag_context_find_window (GdkDragContext *context,
+ GdkWindow *drag_window,
+ GdkScreen *screen,
+ gint x_root,
+ gint y_root,
+ GdkDragProtocol *protocol);
+static gboolean gdk_x11_drag_context_drag_motion (GdkDragContext *context,
+ GdkWindow *dest_window,
+ GdkDragProtocol protocol,
+ gint x_root,
+ gint y_root,
+ GdkDragAction suggested_action,
+ GdkDragAction possible_actions,
+ guint32 time);
+static void gdk_x11_drag_context_drag_status (GdkDragContext *context,
+ GdkDragAction action,
+ guint32 time_);
+static void gdk_x11_drag_context_drag_abort (GdkDragContext *context,
+ guint32 time_);
+static void gdk_x11_drag_context_drag_drop (GdkDragContext *context,
+ guint32 time_);
+static void gdk_x11_drag_context_drop_reply (GdkDragContext *context,
+ gboolean accept,
+ guint32 time_);
+static void gdk_x11_drag_context_drop_finish (GdkDragContext *context,
+ gboolean success,
+ guint32 time_);
+static gboolean gdk_x11_drag_context_drop_status (GdkDragContext *context);
+static GdkAtom gdk_x11_drag_context_get_selection (GdkDragContext *context);
+
+static void
+gdk_x11_drag_context_class_init (GdkX11DragContextClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GdkDragContextClass *context_class = GDK_DRAG_CONTEXT_CLASS (klass);
+
+ object_class->finalize = gdk_x11_drag_context_finalize;
+
+ context_class->find_window = gdk_x11_drag_context_find_window;
+ context_class->drag_status = gdk_x11_drag_context_drag_status;
+ context_class->drag_motion = gdk_x11_drag_context_drag_motion;
+ context_class->drag_abort = gdk_x11_drag_context_drag_abort;
+ context_class->drag_drop = gdk_x11_drag_context_drag_drop;
+ context_class->drop_reply = gdk_x11_drag_context_drop_reply;
+ context_class->drop_finish = gdk_x11_drag_context_drop_finish;
+ context_class->drop_status = gdk_x11_drag_context_drop_status;
+ context_class->get_selection = gdk_x11_drag_context_get_selection;
+}
+
+static void
+gdk_x11_drag_context_finalize (GObject *object)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (object);
+ GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (object);
+
+ if (context->source_window)
+ {
+ if ((context->protocol == GDK_DRAG_PROTO_XDND) && !context->is_source)
+ xdnd_manage_source_filter (context, context->source_window, FALSE);
}
+
+ g_slist_free_full (x11_context->window_caches, (GDestroyNotify)gdk_window_cache_unref);
+ x11_context->window_caches = NULL;
+
+ contexts = g_list_remove (contexts, context);
+
+ G_OBJECT_CLASS (gdk_x11_drag_context_parent_class)->finalize (object);
}
-void
-gdk_dnd_set_drag_shape(GdkWindow *default_pixmapwin,
- GdkPoint *default_hotspot,
- GdkWindow *goahead_pixmapwin,
- GdkPoint *goahead_hotspot)
+/* Drag Contexts */
+
+static GdkDragContext *
+gdk_drag_context_find (GdkDisplay *display,
+ gboolean is_source,
+ Window source_xid,
+ Window dest_xid)
+{
+ GList *tmp_list;
+ GdkDragContext *context;
+ GdkX11DragContext *context_x11;
+ Window context_dest_xid;
+
+ for (tmp_list = contexts; tmp_list; tmp_list = tmp_list->next)
+ {
+ context = (GdkDragContext *)tmp_list->data;
+ context_x11 = (GdkX11DragContext *)context;
+
+ if ((context->source_window && gdk_window_get_display (context->source_window) != display) ||
+ (context->dest_window && gdk_window_get_display (context->dest_window) != display))
+ continue;
+
+ context_dest_xid = context->dest_window
+ ? (context_x11->drop_xid
+ ? context_x11->drop_xid
+ : GDK_WINDOW_XID (context->dest_window))
+ : None;
+
+ if ((!context->is_source == !is_source) &&
+ ((source_xid == None) || (context->source_window &&
+ (GDK_WINDOW_XID (context->source_window) == source_xid))) &&
+ ((dest_xid == None) || (context_dest_xid == dest_xid)))
+ return context;
+ }
+
+ return NULL;
+}
+
+static void
+precache_target_list (GdkDragContext *context)
+{
+ if (context->targets)
+ {
+ GPtrArray *targets = g_ptr_array_new ();
+ GList *tmp_list;
+ int i;
+
+ for (tmp_list = context->targets; tmp_list; tmp_list = tmp_list->next)
+ g_ptr_array_add (targets, gdk_atom_name (GDK_POINTER_TO_ATOM (tmp_list->data)));
+
+ _gdk_x11_precache_atoms (GDK_WINDOW_DISPLAY (context->source_window),
+ (const gchar **)targets->pdata,
+ targets->len);
+
+ for (i =0; i < targets->len; i++)
+ g_free (targets->pdata[i]);
+
+ g_ptr_array_free (targets, TRUE);
+ }
+}
+
+/* Utility functions */
+
+static void
+free_cache_child (GdkCacheChild *child,
+ GdkDisplay *display)
+{
+ if (child->shape)
+ cairo_region_destroy (child->shape);
+
+ if (child->shape_selected && display)
+ {
+ GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
+
+ XShapeSelectInput (display_x11->xdisplay, child->xid, 0);
+ }
+
+ g_free (child);
+}
+
+static void
+gdk_window_cache_add (GdkWindowCache *cache,
+ guint32 xid,
+ gint x,
+ gint y,
+ gint width,
+ gint height,
+ gboolean mapped)
+{
+ GdkCacheChild *child = g_new (GdkCacheChild, 1);
+
+ child->xid = xid;
+ child->x = x;
+ child->y = y;
+ child->width = width;
+ child->height = height;
+ child->mapped = mapped;
+ child->shape_selected = FALSE;
+ child->shape_valid = FALSE;
+ child->shape = NULL;
+
+ cache->children = g_list_prepend (cache->children, child);
+ g_hash_table_insert (cache->child_hash, GUINT_TO_POINTER (xid),
+ cache->children);
+}
+
+static GdkFilterReturn
+gdk_window_cache_shape_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent = (XEvent *)xev;
+ GdkWindowCache *cache = data;
+
+ GdkX11Display *display = GDK_X11_DISPLAY (gdk_screen_get_display (cache->screen));
+
+ if (display->have_shapes &&
+ xevent->type == display->shape_event_base + ShapeNotify)
+ {
+ XShapeEvent *xse = (XShapeEvent*)xevent;
+ GList *node;
+
+ node = g_hash_table_lookup (cache->child_hash,
+ GUINT_TO_POINTER (xse->window));
+ if (node)
+ {
+ GdkCacheChild *child = node->data;
+ child->shape_valid = FALSE;
+ if (child->shape)
+ {
+ cairo_region_destroy (child->shape);
+ child->shape = NULL;
+ }
+ }
+
+ return GDK_FILTER_REMOVE;
+ }
+
+ return GDK_FILTER_CONTINUE;
+}
+
+static GdkFilterReturn
+gdk_window_cache_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent = (XEvent *)xev;
+ GdkWindowCache *cache = data;
+
+ switch (xevent->type)
+ {
+ case CirculateNotify:
+ break;
+ case ConfigureNotify:
+ {
+ XConfigureEvent *xce = &xevent->xconfigure;
+ GList *node;
+
+ node = g_hash_table_lookup (cache->child_hash,
+ GUINT_TO_POINTER (xce->window));
+ if (node)
+ {
+ GdkCacheChild *child = node->data;
+ child->x = xce->x;
+ child->y = xce->y;
+ child->width = xce->width;
+ child->height = xce->height;
+ if (xce->above == None && (node->next))
+ {
+ GList *last = g_list_last (cache->children);
+ cache->children = g_list_remove_link (cache->children, node);
+ last->next = node;
+ node->next = NULL;
+ node->prev = last;
+ }
+ else
+ {
+ GList *above_node = g_hash_table_lookup (cache->child_hash,
+ GUINT_TO_POINTER (xce->above));
+ if (above_node && node->next != above_node)
+ {
+ /* Put the window above (before in the list) above_node */
+ cache->children = g_list_remove_link (cache->children, node);
+ node->prev = above_node->prev;
+ if (node->prev)
+ node->prev->next = node;
+ else
+ cache->children = node;
+ node->next = above_node;
+ above_node->prev = node;
+ }
+ }
+ }
+ break;
+ }
+ case CreateNotify:
+ {
+ XCreateWindowEvent *xcwe = &xevent->xcreatewindow;
+
+ if (!g_hash_table_lookup (cache->child_hash,
+ GUINT_TO_POINTER (xcwe->window)))
+ gdk_window_cache_add (cache, xcwe->window,
+ xcwe->x, xcwe->y, xcwe->width, xcwe->height,
+ FALSE);
+ break;
+ }
+ case DestroyNotify:
+ {
+ XDestroyWindowEvent *xdwe = &xevent->xdestroywindow;
+ GList *node;
+
+ node = g_hash_table_lookup (cache->child_hash,
+ GUINT_TO_POINTER (xdwe->window));
+ if (node)
+ {
+ GdkCacheChild *child = node->data;
+
+ g_hash_table_remove (cache->child_hash,
+ GUINT_TO_POINTER (xdwe->window));
+ cache->children = g_list_remove_link (cache->children, node);
+ /* window is destroyed, no need to disable ShapeNotify */
+ free_cache_child (child, NULL);
+ g_list_free_1 (node);
+ }
+ break;
+ }
+ case MapNotify:
+ {
+ XMapEvent *xme = &xevent->xmap;
+ GList *node;
+
+ node = g_hash_table_lookup (cache->child_hash,
+ GUINT_TO_POINTER (xme->window));
+ if (node)
+ {
+ GdkCacheChild *child = node->data;
+ child->mapped = TRUE;
+ }
+ break;
+ }
+ case ReparentNotify:
+ break;
+ case UnmapNotify:
+ {
+ XMapEvent *xume = &xevent->xmap;
+ GList *node;
+
+ node = g_hash_table_lookup (cache->child_hash,
+ GUINT_TO_POINTER (xume->window));
+ if (node)
+ {
+ GdkCacheChild *child = node->data;
+ child->mapped = FALSE;
+ }
+ break;
+ }
+ default:
+ return GDK_FILTER_CONTINUE;
+ }
+ return GDK_FILTER_REMOVE;
+}
+
+static GdkWindowCache *
+gdk_window_cache_new (GdkScreen *screen)
{
- g_return_if_fail(default_pixmapwin != NULL);
+ XWindowAttributes xwa;
+ Display *xdisplay = GDK_SCREEN_XDISPLAY (screen);
+ GdkWindow *root_window = gdk_screen_get_root_window (screen);
+ GdkChildInfoX11 *children;
+ guint nchildren, i;
+#ifdef HAVE_XCOMPOSITE
+ Window cow;
+#endif
+
+ GdkWindowCache *result = g_new (GdkWindowCache, 1);
- g_list_free(gdk_dnd.c->xids); gdk_dnd.c->xids = NULL;
- if(gdk_dnd.c->drag_pm_default)
+ result->children = NULL;
+ result->child_hash = g_hash_table_new (g_direct_hash, NULL);
+ result->screen = screen;
+ result->ref_count = 1;
+
+ XGetWindowAttributes (xdisplay, GDK_WINDOW_XID (root_window), &xwa);
+ result->old_event_mask = xwa.your_event_mask;
+
+ if (G_UNLIKELY (!GDK_X11_DISPLAY (GDK_X11_SCREEN (screen)->display)->trusted_client))
{
- gdk_window_hide(gdk_dnd.c->drag_pm_default);
- gdk_window_unref(gdk_dnd.c->drag_pm_default);
+ GList *toplevel_windows, *list;
+ GdkWindow *window;
+ gint x, y, width, height;
+
+ toplevel_windows = gdk_screen_get_toplevel_windows (screen);
+ for (list = toplevel_windows; list; list = list->next)
+ {
+ window = GDK_WINDOW (list->data);
+ gdk_window_get_geometry (window, &x, &y, &width, &height);
+ gdk_window_cache_add (result, GDK_WINDOW_XID (window),
+ x, y, width, height,
+ gdk_window_is_visible (window));
+ }
+ g_list_free (toplevel_windows);
+ return result;
}
- if(gdk_dnd.c->drag_pm_ok)
+
+ XSelectInput (xdisplay, GDK_WINDOW_XID (root_window),
+ result->old_event_mask | SubstructureNotifyMask);
+ gdk_window_add_filter (root_window, gdk_window_cache_filter, result);
+ gdk_window_add_filter (NULL, gdk_window_cache_shape_filter, result);
+
+ if (!_gdk_x11_get_window_child_info (gdk_screen_get_display (screen),
+ GDK_WINDOW_XID (root_window),
+ FALSE, NULL,
+ &children, &nchildren))
+ return result;
+
+ for (i = 0; i < nchildren ; i++)
{
- gdk_window_hide(gdk_dnd.c->drag_pm_ok);
- gdk_window_unref(gdk_dnd.c->drag_pm_ok);
+ gdk_window_cache_add (result, children[i].window,
+ children[i].x, children[i].y, children[i].width, children[i].height,
+ children[i].is_mapped);
}
- gdk_dnd.c->drag_pm_ok = NULL;
+ g_free (children);
- gdk_window_ref(default_pixmapwin);
- gdk_dnd.c->drag_pm_default = default_pixmapwin;
- gdk_dnd.c->default_hotspot = *default_hotspot;
- gdk_dnd.c->xids = g_list_append(gdk_dnd.c->xids, GUINT_TO_GPOINTER (((GdkWindowPrivate *)default_pixmapwin)->xwindow));
- if(goahead_pixmapwin)
+#ifdef HAVE_XCOMPOSITE
+ /*
+ * Add the composite overlay window to the cache, as this can be a reasonable
+ * Xdnd proxy as well.
+ * This is only done when the screen is composited in order to avoid mapping
+ * the COW. We assume that the CM is using the COW (which is true for pretty
+ * much any CM currently in use).
+ */
+ if (gdk_screen_is_composited (screen))
{
- gdk_window_ref(goahead_pixmapwin);
- gdk_dnd.c->xids = g_list_append(gdk_dnd.c->xids, GUINT_TO_GPOINTER (((GdkWindowPrivate *)goahead_pixmapwin)->xwindow));
- gdk_dnd.c->drag_pm_ok = goahead_pixmapwin;
- gdk_dnd.c->ok_hotspot = *goahead_hotspot;
+ cow = XCompositeGetOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window));
+ gdk_window_cache_add (result, cow, 0, 0, gdk_screen_get_width (screen), gdk_screen_get_height (screen), TRUE);
+ XCompositeReleaseOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window));
}
+#endif
+
+ return result;
+}
+
+static void
+gdk_window_cache_destroy (GdkWindowCache *cache)
+{
+ GdkWindow *root_window = gdk_screen_get_root_window (cache->screen);
+ GdkDisplay *display;
+
+ XSelectInput (GDK_WINDOW_XDISPLAY (root_window),
+ GDK_WINDOW_XID (root_window),
+ cache->old_event_mask);
+ gdk_window_remove_filter (root_window, gdk_window_cache_filter, cache);
+ gdk_window_remove_filter (NULL, gdk_window_cache_shape_filter, cache);
- if(gdk_dnd.dnd_grabbed)
+ display = gdk_screen_get_display (cache->screen);
+
+ gdk_x11_display_error_trap_push (display);
+ g_list_foreach (cache->children, (GFunc)free_cache_child, display);
+ gdk_x11_display_error_trap_pop_ignored (display);
+
+ g_list_free (cache->children);
+ g_hash_table_destroy (cache->child_hash);
+
+ g_free (cache);
+}
+
+static GdkWindowCache *
+gdk_window_cache_ref (GdkWindowCache *cache)
+{
+ cache->ref_count += 1;
+
+ return cache;
+}
+
+static void
+gdk_window_cache_unref (GdkWindowCache *cache)
+{
+ g_assert (cache->ref_count > 0);
+
+ cache->ref_count -= 1;
+
+ if (cache->ref_count == 0)
{
- gdk_dnd_display_drag_cursor(-1, -1,
- gdk_dnd.dnd_drag_target?TRUE:FALSE,
- TRUE);
- XChangeActivePointerGrab (gdk_display,
- ButtonMotionMask |
- ButtonPressMask |
- ButtonReleaseMask |
- EnterWindowMask | LeaveWindowMask,
- None,
- CurrentTime);
+ window_caches = g_slist_remove (window_caches, cache);
+ gdk_window_cache_destroy (cache);
}
}
-void
-gdk_dnd_display_drag_cursor(gint x, gint y, gboolean drag_ok,
- gboolean change_made)
+GdkWindowCache *
+gdk_window_cache_get (GdkScreen *screen)
{
- if(!gdk_dnd.dnd_grabbed)
- return;
+ GSList *list;
+ GdkWindowCache *cache;
- if(gdk_dnd.c->drag_pm_default)
- {
- /* We're doing pixmaps here... */
- GdkWindow *mypix, *opix;
- GdkPoint *myhotspot;
- gint itmp;
- guint masktmp;
- Window wtmp;
-
- if(x == -2 && y == -2) /* Hide the cursors */
- {
- gdk_window_hide(gdk_dnd.c->drag_pm_ok);
- gdk_window_hide(gdk_dnd.c->drag_pm_default);
- GDK_NOTE(DND, g_print("Hiding both drag cursors\n"));
- return;
- }
-
- if(x == -1 && y == -1) /* We're supposed to find it out for ourselves */
- XQueryPointer(gdk_display, gdk_root_window,
- &wtmp, &wtmp, &x, &y, &itmp, &itmp, &masktmp);
-
- if(drag_ok)
- {
- GDK_NOTE(DND, g_print("Switching to drag_ok cursor\n"));
- mypix = gdk_dnd.c->drag_pm_ok;
- opix = gdk_dnd.c->drag_pm_default;
- myhotspot = &gdk_dnd.c->ok_hotspot;
- }
- else
- {
- GDK_NOTE(DND, g_print("Switching to drag_default cursor\n"));
- mypix = gdk_dnd.c->drag_pm_default;
- opix = gdk_dnd.c->drag_pm_ok;
- myhotspot = &gdk_dnd.c->default_hotspot;
- }
- gdk_window_move(mypix, x - myhotspot->x, y - myhotspot->y);
- if(change_made)
- {
- GDK_NOTE(DND, g_print("Cursors switched, hide & show\n"));
- gdk_window_hide(opix);
- }
- gdk_window_move(mypix, x - myhotspot->x, y - myhotspot->y);
- if (change_made)
- {
- gdk_window_show(mypix); /* There ought to be a way to know if
- a window is already mapped etc. */
- }
- }
- else if(change_made)
- {
- Cursor c;
- /* Move cursors around */
- if(drag_ok)
- c = gdk_dnd.c->gdk_cursor_dragok;
+ for (list = window_caches; list; list = list->next)
+ {
+ cache = list->data;
+ if (cache->screen == screen)
+ return gdk_window_cache_ref (cache);
+ }
+
+ cache = gdk_window_cache_new (screen);
+
+ window_caches = g_slist_prepend (window_caches, cache);
+
+ return cache;
+}
+
+static gboolean
+is_pointer_within_shape (GdkDisplay *display,
+ GdkCacheChild *child,
+ gint x_pos,
+ gint y_pos)
+{
+ if (!child->shape_selected)
+ {
+ GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
+
+ XShapeSelectInput (display_x11->xdisplay, child->xid, ShapeNotifyMask);
+ child->shape_selected = TRUE;
+ }
+ if (!child->shape_valid)
+ {
+ GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
+ cairo_region_t *input_shape;
+
+ child->shape = NULL;
+ if (gdk_display_supports_shapes (display))
+ child->shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
+ child->xid, ShapeBounding);
+#ifdef ShapeInput
+ input_shape = NULL;
+ if (gdk_display_supports_input_shapes (display))
+ input_shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
+ child->xid, ShapeInput);
+
+ if (child->shape && input_shape)
+ {
+ cairo_region_intersect (child->shape, input_shape);
+ cairo_region_destroy (input_shape);
+ }
+ else if (input_shape)
+ {
+ child->shape = input_shape;
+ }
+#endif
+
+ child->shape_valid = TRUE;
+ }
+
+ return child->shape == NULL ||
+ cairo_region_contains_point (child->shape, x_pos, y_pos);
+}
+
+static Window
+get_client_window_at_coords_recurse (GdkDisplay *display,
+ Window win,
+ gboolean is_toplevel,
+ gint x,
+ gint y)
+{
+ GdkChildInfoX11 *children;
+ unsigned int nchildren;
+ int i;
+ gboolean found_child = FALSE;
+ GdkChildInfoX11 child = { 0, };
+ gboolean has_wm_state = FALSE;
+
+ if (!_gdk_x11_get_window_child_info (display, win, TRUE,
+ is_toplevel? &has_wm_state : NULL,
+ &children, &nchildren))
+ return None;
+
+ if (has_wm_state)
+ {
+ g_free (children);
+
+ return win;
+ }
+
+ for (i = nchildren - 1; (i >= 0) && !found_child; i--)
+ {
+ GdkChildInfoX11 *cur_child = &children[i];
+
+ if ((cur_child->is_mapped) && (cur_child->window_class == InputOutput) &&
+ (x >= cur_child->x) && (x < cur_child->x + cur_child->width) &&
+ (y >= cur_child->y) && (y < cur_child->y + cur_child->height))
+ {
+ x -= cur_child->x;
+ y -= cur_child->y;
+ child = *cur_child;
+ found_child = TRUE;
+ }
+ }
+
+ g_free (children);
+
+ if (found_child)
+ {
+ if (child.has_wm_state)
+ return child.window;
else
- c = gdk_dnd.c->gdk_cursor_dragdefault;
- XChangeActivePointerGrab (gdk_display,
- ButtonMotionMask |
- ButtonPressMask |
- ButtonReleaseMask |
- EnterWindowMask | LeaveWindowMask,
- c,
- CurrentTime);
+ return get_client_window_at_coords_recurse (display, child.window, FALSE, x, y);
+ }
+ else
+ return None;
+}
+
+static Window
+get_client_window_at_coords (GdkWindowCache *cache,
+ Window ignore,
+ gint x_root,
+ gint y_root)
+{
+ GList *tmp_list;
+ Window retval = None;
+ GdkDisplay *display;
+
+ display = gdk_screen_get_display (cache->screen);
+
+ gdk_x11_display_error_trap_push (display);
+
+ tmp_list = cache->children;
+
+ while (tmp_list && !retval)
+ {
+ GdkCacheChild *child = tmp_list->data;
+
+ if ((child->xid != ignore) && (child->mapped))
+ {
+ if ((x_root >= child->x) && (x_root < child->x + child->width) &&
+ (y_root >= child->y) && (y_root < child->y + child->height))
+ {
+ if (!is_pointer_within_shape (display, child,
+ x_root - child->x,
+ y_root - child->y))
+ {
+ tmp_list = tmp_list->next;
+ continue;
+ }
+
+ retval = get_client_window_at_coords_recurse (display,
+ child->xid, TRUE,
+ x_root - child->x,
+ y_root - child->y);
+ if (!retval)
+ retval = child->xid;
+ }
+ }
+ tmp_list = tmp_list->next;
+ }
+
+ gdk_x11_display_error_trap_pop_ignored (display);
+
+ if (retval)
+ return retval;
+ else
+ return GDK_WINDOW_XID (gdk_screen_get_root_window (cache->screen));
+}
+
+#ifdef G_ENABLE_DEBUG
+static void
+print_target_list (GList *targets)
+{
+ while (targets)
+ {
+ gchar *name = gdk_atom_name (GDK_POINTER_TO_ATOM (targets->data));
+ g_message ("\t%s", name);
+ g_free (name);
+ targets = targets->next;
+ }
+}
+#endif /* G_ENABLE_DEBUG */
+
+/*************************************************************
+ ***************************** XDND **************************
+ *************************************************************/
+
+/* Utility functions */
+
+static struct {
+ const gchar *name;
+ GdkAtom atom;
+ GdkDragAction action;
+} xdnd_actions_table[] = {
+ { "XdndActionCopy", None, GDK_ACTION_COPY },
+ { "XdndActionMove", None, GDK_ACTION_MOVE },
+ { "XdndActionLink", None, GDK_ACTION_LINK },
+ { "XdndActionAsk", None, GDK_ACTION_ASK },
+ { "XdndActionPrivate", None, GDK_ACTION_COPY },
+ };
+
+static const gint xdnd_n_actions = G_N_ELEMENTS (xdnd_actions_table);
+static gboolean xdnd_actions_initialized = FALSE;
+
+static void
+xdnd_initialize_actions (void)
+{
+ gint i;
+
+ xdnd_actions_initialized = TRUE;
+ for (i = 0; i < xdnd_n_actions; i++)
+ xdnd_actions_table[i].atom = gdk_atom_intern_static_string (xdnd_actions_table[i].name);
+}
+
+static GdkDragAction
+xdnd_action_from_atom (GdkDisplay *display,
+ Atom xatom)
+{
+ GdkAtom atom;
+ gint i;
+
+ if (xatom == None)
+ return 0;
+
+ atom = gdk_x11_xatom_to_atom_for_display (display, xatom);
+
+ if (!xdnd_actions_initialized)
+ xdnd_initialize_actions();
+
+ for (i = 0; i < xdnd_n_actions; i++)
+ if (atom == xdnd_actions_table[i].atom)
+ return xdnd_actions_table[i].action;
+
+ return 0;
+}
+
+static Atom
+xdnd_action_to_atom (GdkDisplay *display,
+ GdkDragAction action)
+{
+ gint i;
+
+ if (!xdnd_actions_initialized)
+ xdnd_initialize_actions();
+
+ for (i = 0; i < xdnd_n_actions; i++)
+ if (action == xdnd_actions_table[i].action)
+ return gdk_x11_atom_to_xatom_for_display (display, xdnd_actions_table[i].atom);
+
+ return None;
+}
+
+/* Source side */
+
+static GdkFilterReturn
+xdnd_status_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ GdkDisplay *display;
+ XEvent *xevent = (XEvent *)xev;
+ guint32 dest_window = xevent->xclient.data.l[0];
+ guint32 flags = xevent->xclient.data.l[1];
+ Atom action = xevent->xclient.data.l[4];
+ GdkDragContext *context;
+
+ if (!event->any.window ||
+ gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
+ return GDK_FILTER_CONTINUE; /* Not for us */
+
+ GDK_NOTE (DND,
+ g_message ("XdndStatus: dest_window: %#x action: %ld",
+ dest_window, action));
+
+ display = gdk_window_get_display (event->any.window);
+ context = gdk_drag_context_find (display, TRUE, xevent->xclient.window, dest_window);
+
+ if (context)
+ {
+ GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
+ if (context_x11->drag_status == GDK_DRAG_STATUS_MOTION_WAIT)
+ context_x11->drag_status = GDK_DRAG_STATUS_DRAG;
+
+ event->dnd.send_event = FALSE;
+ event->dnd.type = GDK_DRAG_STATUS;
+ event->dnd.context = context;
+ gdk_event_set_device (event, gdk_drag_context_get_device (context));
+ g_object_ref (context);
+
+ event->dnd.time = GDK_CURRENT_TIME; /* FIXME? */
+ if (!(action != 0) != !(flags & 1))
+ {
+ GDK_NOTE (DND,
+ g_warning ("Received status event with flags not corresponding to action!\n"));
+ action = 0;
+ }
+
+ context->action = xdnd_action_from_atom (display, action);
+
+ return GDK_FILTER_TRANSLATE;
+ }
+
+ return GDK_FILTER_REMOVE;
+}
+
+static GdkFilterReturn
+xdnd_finished_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ GdkDisplay *display;
+ XEvent *xevent = (XEvent *)xev;
+ guint32 dest_window = xevent->xclient.data.l[0];
+ GdkDragContext *context;
+ GdkX11DragContext *context_x11;
+
+ if (!event->any.window ||
+ gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
+ return GDK_FILTER_CONTINUE; /* Not for us */
+
+ GDK_NOTE (DND,
+ g_message ("XdndFinished: dest_window: %#x", dest_window));
+
+ display = gdk_window_get_display (event->any.window);
+ context = gdk_drag_context_find (display, TRUE, xevent->xclient.window, dest_window);
+
+ if (context)
+ {
+ context_x11 = GDK_X11_DRAG_CONTEXT (context);
+ if (context_x11->version == 5)
+ context_x11->drop_failed = xevent->xclient.data.l[1] == 0;
+
+ event->dnd.type = GDK_DROP_FINISHED;
+ event->dnd.context = context;
+ gdk_event_set_device (event, gdk_drag_context_get_device (context));
+ g_object_ref (context);
+
+ event->dnd.time = GDK_CURRENT_TIME; /* FIXME? */
+
+ return GDK_FILTER_TRANSLATE;
+ }
+
+ return GDK_FILTER_REMOVE;
+}
+
+static void
+xdnd_set_targets (GdkX11DragContext *context_x11)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ Atom *atomlist;
+ GList *tmp_list = context->targets;
+ gint i;
+ gint n_atoms = g_list_length (context->targets);
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
+
+ atomlist = g_new (Atom, n_atoms);
+ i = 0;
+ while (tmp_list)
+ {
+ atomlist[i] = gdk_x11_atom_to_xatom_for_display (display, GDK_POINTER_TO_ATOM (tmp_list->data));
+ tmp_list = tmp_list->next;
+ i++;
+ }
+
+ XChangeProperty (GDK_WINDOW_XDISPLAY (context->source_window),
+ GDK_WINDOW_XID (context->source_window),
+ gdk_x11_get_xatom_by_name_for_display (display, "XdndTypeList"),
+ XA_ATOM, 32, PropModeReplace,
+ (guchar *)atomlist, n_atoms);
+
+ g_free (atomlist);
+
+ context_x11->xdnd_targets_set = 1;
+}
+
+static void
+xdnd_set_actions (GdkX11DragContext *context_x11)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ Atom *atomlist;
+ gint i;
+ gint n_atoms;
+ guint actions;
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
+
+ if (!xdnd_actions_initialized)
+ xdnd_initialize_actions();
+
+ actions = context->actions;
+ n_atoms = 0;
+ for (i = 0; i < xdnd_n_actions; i++)
+ {
+ if (actions & xdnd_actions_table[i].action)
+ {
+ actions &= ~xdnd_actions_table[i].action;
+ n_atoms++;
+ }
+ }
+
+ atomlist = g_new (Atom, n_atoms);
+
+ actions = context->actions;
+ n_atoms = 0;
+ for (i = 0; i < xdnd_n_actions; i++)
+ {
+ if (actions & xdnd_actions_table[i].action)
+ {
+ actions &= ~xdnd_actions_table[i].action;
+ atomlist[n_atoms] = gdk_x11_atom_to_xatom_for_display (display, xdnd_actions_table[i].atom);
+ n_atoms++;
+ }
}
+
+ XChangeProperty (GDK_WINDOW_XDISPLAY (context->source_window),
+ GDK_WINDOW_XID (context->source_window),
+ gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"),
+ XA_ATOM, 32, PropModeReplace,
+ (guchar *)atomlist, n_atoms);
+
+ g_free (atomlist);
+
+ context_x11->xdnd_actions_set = TRUE;
+ context_x11->xdnd_actions = context->actions;
+}
+
+static void
+send_client_message_async_cb (Window window,
+ gboolean success,
+ gpointer data)
+{
+ GdkDragContext *context = data;
+ GDK_NOTE (DND,
+ g_message ("Got async callback for #%lx, success = %d",
+ window, success));
+
+ /* On failure, we immediately continue with the protocol
+ * so we don't end up blocking for a timeout
+ */
+ if (!success &&
+ context->dest_window &&
+ window == GDK_WINDOW_XID (context->dest_window))
+ {
+ GdkEvent *temp_event;
+ GdkX11DragContext *context_x11 = data;
+
+ g_object_unref (context->dest_window);
+ context->dest_window = NULL;
+ context->action = 0;
+
+ context_x11->drag_status = GDK_DRAG_STATUS_DRAG;
+
+ temp_event = gdk_event_new (GDK_DRAG_STATUS);
+ temp_event->dnd.window = g_object_ref (context->source_window);
+ temp_event->dnd.send_event = TRUE;
+ temp_event->dnd.context = g_object_ref (context);
+ temp_event->dnd.time = GDK_CURRENT_TIME;
+ gdk_event_set_device (temp_event, gdk_drag_context_get_device (context));
+
+ gdk_event_put (temp_event);
+
+ gdk_event_free (temp_event);
+ }
+
+ g_object_unref (context);
+}
+
+
+static GdkDisplay *
+gdk_drag_context_get_display (GdkDragContext *context)
+{
+ if (context->source_window)
+ return GDK_WINDOW_DISPLAY (context->source_window);
+ else if (context->dest_window)
+ return GDK_WINDOW_DISPLAY (context->dest_window);
+
+ g_assert_not_reached ();
+ return NULL;
+}
+
+static void
+send_client_message_async (GdkDragContext *context,
+ Window window,
+ gboolean propagate,
+ glong event_mask,
+ XClientMessageEvent *event_send)
+{
+ GdkDisplay *display = gdk_drag_context_get_display (context);
+
+ g_object_ref (context);
+
+ _gdk_x11_send_client_message_async (display, window,
+ propagate, event_mask, event_send,
+ send_client_message_async_cb, context);
+}
+
+static gboolean
+xdnd_send_xevent (GdkX11DragContext *context_x11,
+ GdkWindow *window,
+ gboolean propagate,
+ XEvent *event_send)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ GdkDisplay *display = gdk_drag_context_get_display (context);
+ Window xwindow;
+ glong event_mask;
+
+ g_assert (event_send->xany.type == ClientMessage);
+
+ /* We short-circuit messages to ourselves */
+ if (gdk_window_get_window_type (window) != GDK_WINDOW_FOREIGN)
+ {
+ gint i;
+
+ for (i = 0; i < G_N_ELEMENTS (xdnd_filters); i++)
+ {
+ if (gdk_x11_get_xatom_by_name_for_display (display, xdnd_filters[i].atom_name) ==
+ event_send->xclient.message_type)
+ {
+ GdkEvent *temp_event;
+
+ temp_event = gdk_event_new (GDK_NOTHING);
+ temp_event->any.window = g_object_ref (window);
+
+ if ((*xdnd_filters[i].func) (event_send, temp_event, NULL) == GDK_FILTER_TRANSLATE)
+ {
+ gdk_event_put (temp_event);
+ gdk_event_free (temp_event);
+ }
+
+ return TRUE;
+ }
+ }
+ }
+
+ xwindow = GDK_WINDOW_XID (window);
+
+ if (_gdk_x11_display_is_root_window (display, xwindow))
+ event_mask = ButtonPressMask;
+ else
+ event_mask = 0;
+
+ send_client_message_async (context, xwindow, propagate, event_mask,
+ &event_send->xclient);
+
+ return TRUE;
+}
+
+static void
+xdnd_send_enter (GdkX11DragContext *context_x11)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->dest_window);
+ XEvent xev;
+
+ xev.xclient.type = ClientMessage;
+ xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndEnter");
+ xev.xclient.format = 32;
+ xev.xclient.window = context_x11->drop_xid
+ ? context_x11->drop_xid
+ : GDK_WINDOW_XID (context->dest_window);
+ xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
+ xev.xclient.data.l[1] = (context_x11->version << 24); /* version */
+ xev.xclient.data.l[2] = 0;
+ xev.xclient.data.l[3] = 0;
+ xev.xclient.data.l[4] = 0;
+
+ GDK_NOTE(DND,
+ g_message ("Sending enter source window %#lx XDND protocol version %d\n",
+ GDK_WINDOW_XID (context->source_window), context_x11->version));
+ if (g_list_length (context->targets) > 3)
+ {
+ if (!context_x11->xdnd_targets_set)
+ xdnd_set_targets (context_x11);
+ xev.xclient.data.l[1] |= 1;
+ }
+ else
+ {
+ GList *tmp_list = context->targets;
+ gint i = 2;
+
+ while (tmp_list)
+ {
+ xev.xclient.data.l[i] = gdk_x11_atom_to_xatom_for_display (display,
+ GDK_POINTER_TO_ATOM (tmp_list->data));
+ tmp_list = tmp_list->next;
+ i++;
+ }
+ }
+
+ if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
+ {
+ GDK_NOTE (DND,
+ g_message ("Send event to %lx failed",
+ GDK_WINDOW_XID (context->dest_window)));
+ g_object_unref (context->dest_window);
+ context->dest_window = NULL;
+ }
+}
+
+static void
+xdnd_send_leave (GdkX11DragContext *context_x11)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
+ XEvent xev;
+
+ xev.xclient.type = ClientMessage;
+ xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndLeave");
+ xev.xclient.format = 32;
+ xev.xclient.window = context_x11->drop_xid
+ ? context_x11->drop_xid
+ : GDK_WINDOW_XID (context->dest_window);
+ xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
+ xev.xclient.data.l[1] = 0;
+ xev.xclient.data.l[2] = 0;
+ xev.xclient.data.l[3] = 0;
+ xev.xclient.data.l[4] = 0;
+
+ if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
+ {
+ GDK_NOTE (DND,
+ g_message ("Send event to %lx failed",
+ GDK_WINDOW_XID (context->dest_window)));
+ g_object_unref (context->dest_window);
+ context->dest_window = NULL;
+ }
+}
+
+static void
+xdnd_send_drop (GdkX11DragContext *context_x11,
+ guint32 time)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
+ XEvent xev;
+
+ xev.xclient.type = ClientMessage;
+ xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndDrop");
+ xev.xclient.format = 32;
+ xev.xclient.window = context_x11->drop_xid
+ ? context_x11->drop_xid
+ : GDK_WINDOW_XID (context->dest_window);
+ xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
+ xev.xclient.data.l[1] = 0;
+ xev.xclient.data.l[2] = time;
+ xev.xclient.data.l[3] = 0;
+ xev.xclient.data.l[4] = 0;
+
+ if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
+ {
+ GDK_NOTE (DND,
+ g_message ("Send event to %lx failed",
+ GDK_WINDOW_XID (context->dest_window)));
+ g_object_unref (context->dest_window);
+ context->dest_window = NULL;
+ }
+}
+
+static void
+xdnd_send_motion (GdkX11DragContext *context_x11,
+ gint x_root,
+ gint y_root,
+ GdkDragAction action,
+ guint32 time)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
+ XEvent xev;
+
+ xev.xclient.type = ClientMessage;
+ xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndPosition");
+ xev.xclient.format = 32;
+ xev.xclient.window = context_x11->drop_xid
+ ? context_x11->drop_xid
+ : GDK_WINDOW_XID (context->dest_window);
+ xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
+ xev.xclient.data.l[1] = 0;
+ xev.xclient.data.l[2] = (x_root << 16) | y_root;
+ xev.xclient.data.l[3] = time;
+ xev.xclient.data.l[4] = xdnd_action_to_atom (display, action);
+
+ if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
+ {
+ GDK_NOTE (DND,
+ g_message ("Send event to %lx failed",
+ GDK_WINDOW_XID (context->dest_window)));
+ g_object_unref (context->dest_window);
+ context->dest_window = NULL;
+ }
+ context_x11->drag_status = GDK_DRAG_STATUS_MOTION_WAIT;
+}
+
+static guint32
+xdnd_check_dest (GdkDisplay *display,
+ Window win,
+ guint *xdnd_version)
+{
+ gboolean retval = FALSE;
+ Atom type = None;
+ int format;
+ unsigned long nitems, after;
+ guchar *data;
+ Atom *version;
+ Window *proxy_data;
+ Window proxy;
+ Atom xdnd_proxy_atom = gdk_x11_get_xatom_by_name_for_display (display, "XdndProxy");
+ Atom xdnd_aware_atom = gdk_x11_get_xatom_by_name_for_display (display, "XdndAware");
+
+ proxy = None;
+
+ gdk_x11_display_error_trap_push (display);
+ if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), win,
+ xdnd_proxy_atom, 0,
+ 1, False, AnyPropertyType,
+ &type, &format, &nitems, &after,
+ &data) == Success)
+ {
+ if (type != None)
+ {
+ proxy_data = (Window *)data;
+
+ if ((format == 32) && (nitems == 1))
+ {
+ proxy = *proxy_data;
+ }
+ else
+ {
+ GDK_NOTE (DND,
+ g_warning ("Invalid XdndProxy "
+ "property on window %ld\n", win));
+ }
+
+ XFree (proxy_data);
+ }
+
+ if ((XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), proxy ? proxy : win,
+ xdnd_aware_atom, 0,
+ 1, False, AnyPropertyType,
+ &type, &format, &nitems, &after,
+ &data) == Success) &&
+ type != None)
+ {
+ version = (Atom *)data;
+
+ if ((format == 32) && (nitems == 1))
+ {
+ if (*version >= 3)
+ retval = TRUE;
+ if (xdnd_version)
+ *xdnd_version = *version;
+ }
+ else
+ {
+ GDK_NOTE (DND,
+ g_warning ("Invalid XdndAware "
+ "property on window %ld\n", win));
+ }
+
+ XFree (version);
+ }
+ }
+
+ gdk_x11_display_error_trap_pop_ignored (display);
+
+ return retval ? (proxy ? proxy : win) : None;
+}
+
+/* Target side */
+
+static void
+xdnd_read_actions (GdkX11DragContext *context_x11)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
+ Atom type;
+ int format;
+ gulong nitems, after;
+ guchar *data;
+ Atom *atoms;
+ gint i;
+
+ context_x11->xdnd_have_actions = FALSE;
+
+ if (gdk_window_get_window_type (context->source_window) == GDK_WINDOW_FOREIGN)
+ {
+ /* Get the XdndActionList, if set */
+
+ gdk_x11_display_error_trap_push (display);
+ if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display),
+ GDK_WINDOW_XID (context->source_window),
+ gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"),
+ 0, 65536,
+ False, XA_ATOM, &type, &format, &nitems,
+ &after, &data) == Success &&
+ type == XA_ATOM)
+ {
+ atoms = (Atom *)data;
+
+ context->actions = 0;
+
+ for (i = 0; i < nitems; i++)
+ context->actions |= xdnd_action_from_atom (display, atoms[i]);
+
+ context_x11->xdnd_have_actions = TRUE;
+
+#ifdef G_ENABLE_DEBUG
+ if (_gdk_debug_flags & GDK_DEBUG_DND)
+ {
+ GString *action_str = g_string_new (NULL);
+ if (context->actions & GDK_ACTION_MOVE)
+ g_string_append(action_str, "MOVE ");
+ if (context->actions & GDK_ACTION_COPY)
+ g_string_append(action_str, "COPY ");
+ if (context->actions & GDK_ACTION_LINK)
+ g_string_append(action_str, "LINK ");
+ if (context->actions & GDK_ACTION_ASK)
+ g_string_append(action_str, "ASK ");
+
+ g_message("Xdnd actions = %s", action_str->str);
+ g_string_free (action_str, TRUE);
+ }
+#endif /* G_ENABLE_DEBUG */
+
+ }
+
+ if (data)
+ XFree (data);
+
+ gdk_x11_display_error_trap_pop_ignored (display);
+ }
+ else
+ {
+ /* Local drag
+ */
+ GdkDragContext *source_context;
+
+ source_context = gdk_drag_context_find (display, TRUE,
+ GDK_WINDOW_XID (context->source_window),
+ GDK_WINDOW_XID (context->dest_window));
+
+ if (source_context)
+ {
+ context->actions = source_context->actions;
+ context_x11->xdnd_have_actions = TRUE;
+ }
+ }
+}
+
+/* We have to make sure that the XdndActionList we keep internally
+ * is up to date with the XdndActionList on the source window
+ * because we get no notification, because Xdnd wasn't meant
+ * to continually send actions. So we select on PropertyChangeMask
+ * and add this filter.
+ */
+static GdkFilterReturn
+xdnd_source_window_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer cb_data)
+{
+ XEvent *xevent = (XEvent *)xev;
+ GdkX11DragContext *context_x11 = cb_data;
+ GdkDisplay *display = GDK_WINDOW_DISPLAY(event->any.window);
+
+ if ((xevent->xany.type == PropertyNotify) &&
+ (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList")))
+ {
+ xdnd_read_actions (context_x11);
+
+ return GDK_FILTER_REMOVE;
+ }
+
+ return GDK_FILTER_CONTINUE;
+}
+
+static void
+xdnd_manage_source_filter (GdkDragContext *context,
+ GdkWindow *window,
+ gboolean add_filter)
+{
+ if (!GDK_WINDOW_DESTROYED (window) &&
+ gdk_window_get_window_type (window) == GDK_WINDOW_FOREIGN)
+ {
+ gdk_x11_display_error_trap_push (GDK_WINDOW_DISPLAY (window));
+
+ if (add_filter)
+ {
+ gdk_window_set_events (window,
+ gdk_window_get_events (window) |
+ GDK_PROPERTY_CHANGE_MASK);
+ gdk_window_add_filter (window, xdnd_source_window_filter, context);
+ }
+ else
+ {
+ gdk_window_remove_filter (window,
+ xdnd_source_window_filter,
+ context);
+ /* Should we remove the GDK_PROPERTY_NOTIFY mask?
+ * but we might want it for other reasons. (Like
+ * INCR selection transactions).
+ */
+ }
+
+ gdk_x11_display_error_trap_pop_ignored (GDK_WINDOW_DISPLAY (window));
+ }
+}
+
+static void
+base_precache_atoms (GdkDisplay *display)
+{
+ GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
+
+ if (!display_x11->base_dnd_atoms_precached)
+ {
+ static const char *const precache_atoms[] = {
+ "WM_STATE",
+ "XdndAware",
+ "XdndProxy"
+ };
+
+ _gdk_x11_precache_atoms (display,
+ precache_atoms, G_N_ELEMENTS (precache_atoms));
+
+ display_x11->base_dnd_atoms_precached = TRUE;
+ }
+}
+
+static void
+xdnd_precache_atoms (GdkDisplay *display)
+{
+ GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
+
+ if (!display_x11->xdnd_atoms_precached)
+ {
+ static const gchar *const precache_atoms[] = {
+ "XdndActionAsk",
+ "XdndActionCopy",
+ "XdndActionLink",
+ "XdndActionList",
+ "XdndActionMove",
+ "XdndActionPrivate",
+ "XdndDrop",
+ "XdndEnter",
+ "XdndFinished",
+ "XdndLeave",
+ "XdndPosition",
+ "XdndSelection",
+ "XdndStatus",
+ "XdndTypeList"
+ };
+
+ _gdk_x11_precache_atoms (display,
+ precache_atoms, G_N_ELEMENTS (precache_atoms));
+
+ display_x11->xdnd_atoms_precached = TRUE;
+ }
+}
+
+static GdkFilterReturn
+xdnd_enter_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer cb_data)
+{
+ GdkDeviceManager *device_manager;
+ GdkDisplay *display;
+ GdkX11Display *display_x11;
+ XEvent *xevent = (XEvent *)xev;
+ GdkDragContext *context;
+ GdkX11DragContext *context_x11;
+ gint i;
+ Atom type;
+ int format;
+ gulong nitems, after;
+ guchar *data;
+ Atom *atoms;
+ guint32 source_window;
+ gboolean get_types;
+ gint version;
+
+ if (!event->any.window ||
+ gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
+ return GDK_FILTER_CONTINUE; /* Not for us */
+
+ source_window = xevent->xclient.data.l[0];
+ get_types = ((xevent->xclient.data.l[1] & 1) != 0);
+ version = (xevent->xclient.data.l[1] & 0xff000000) >> 24;
+
+ display = GDK_WINDOW_DISPLAY (event->any.window);
+ display_x11 = GDK_X11_DISPLAY (display);
+
+ xdnd_precache_atoms (display);
+
+ GDK_NOTE (DND,
+ g_message ("XdndEnter: source_window: %#x, version: %#x",
+ source_window, version));
+
+ if (version < 3)
+ {
+ /* Old source ignore */
+ GDK_NOTE (DND, g_message ("Ignored old XdndEnter message"));
+ return GDK_FILTER_REMOVE;
+ }
+
+ if (display_x11->current_dest_drag != NULL)
+ {
+ g_object_unref (display_x11->current_dest_drag);
+ display_x11->current_dest_drag = NULL;
+ }
+
+ context_x11 = (GdkX11DragContext *)g_object_new (GDK_TYPE_X11_DRAG_CONTEXT, NULL);
+ context = (GdkDragContext *)context_x11;
+
+ context->protocol = GDK_DRAG_PROTO_XDND;
+ context_x11->version = version;
+
+ /* FIXME: Should extend DnD protocol to have device info */
+ device_manager = gdk_display_get_device_manager (display);
+ gdk_drag_context_set_device (context, gdk_device_manager_get_client_pointer (device_manager));
+
+ context->source_window = gdk_x11_window_foreign_new_for_display (display, source_window);
+ if (!context->source_window)
+ {
+ g_object_unref (context);
+ return GDK_FILTER_REMOVE;
+ }
+ context->dest_window = event->any.window;
+ g_object_ref (context->dest_window);
+
+ context->targets = NULL;
+ if (get_types)
+ {
+ gdk_x11_display_error_trap_push (display);
+ XGetWindowProperty (GDK_WINDOW_XDISPLAY (event->any.window),
+ source_window,
+ gdk_x11_get_xatom_by_name_for_display (display, "XdndTypeList"),
+ 0, 65536,
+ False, XA_ATOM, &type, &format, &nitems,
+ &after, &data);
+
+ if (gdk_x11_display_error_trap_pop (display) || (format != 32) || (type != XA_ATOM))
+ {
+ g_object_unref (context);
+
+ if (data)
+ XFree (data);
+
+ return GDK_FILTER_REMOVE;
+ }
+
+ atoms = (Atom *)data;
+
+ for (i = 0; i < nitems; i++)
+ context->targets =
+ g_list_append (context->targets,
+ GDK_ATOM_TO_POINTER (gdk_x11_xatom_to_atom_for_display (display,
+ atoms[i])));
+
+ XFree (atoms);
+ }
+ else
+ {
+ for (i = 0; i < 3; i++)
+ if (xevent->xclient.data.l[2 + i])
+ context->targets =
+ g_list_append (context->targets,
+ GDK_ATOM_TO_POINTER (gdk_x11_xatom_to_atom_for_display (display,
+ xevent->xclient.data.l[2 + i])));
+ }
+
+#ifdef G_ENABLE_DEBUG
+ if (_gdk_debug_flags & GDK_DEBUG_DND)
+ print_target_list (context->targets);
+#endif /* G_ENABLE_DEBUG */
+
+ xdnd_manage_source_filter (context, context->source_window, TRUE);
+ xdnd_read_actions (context_x11);
+
+ event->dnd.type = GDK_DRAG_ENTER;
+ event->dnd.context = context;
+ gdk_event_set_device (event, gdk_drag_context_get_device (context));
+ g_object_ref (context);
+
+ display_x11->current_dest_drag = context;
+
+ return GDK_FILTER_TRANSLATE;
+}
+
+static GdkFilterReturn
+xdnd_leave_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent = (XEvent *)xev;
+ guint32 source_window = xevent->xclient.data.l[0];
+ GdkDisplay *display;
+ GdkX11Display *display_x11;
+
+ if (!event->any.window ||
+ gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
+ return GDK_FILTER_CONTINUE; /* Not for us */
+
+ GDK_NOTE (DND,
+ g_message ("XdndLeave: source_window: %#x",
+ source_window));
+
+ display = GDK_WINDOW_DISPLAY (event->any.window);
+ display_x11 = GDK_X11_DISPLAY (display);
+
+ xdnd_precache_atoms (display);
+
+ if ((display_x11->current_dest_drag != NULL) &&
+ (display_x11->current_dest_drag->protocol == GDK_DRAG_PROTO_XDND) &&
+ (GDK_WINDOW_XID (display_x11->current_dest_drag->source_window) == source_window))
+ {
+ event->dnd.type = GDK_DRAG_LEAVE;
+ /* Pass ownership of context to the event */
+ event->dnd.context = display_x11->current_dest_drag;
+ gdk_event_set_device (event, gdk_drag_context_get_device (event->dnd.context));
+
+ display_x11->current_dest_drag = NULL;
+
+ return GDK_FILTER_TRANSLATE;
+ }
+ else
+ return GDK_FILTER_REMOVE;
+}
+
+static GdkFilterReturn
+xdnd_position_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent = (XEvent *)xev;
+ guint32 source_window = xevent->xclient.data.l[0];
+ gint16 x_root = xevent->xclient.data.l[2] >> 16;
+ gint16 y_root = xevent->xclient.data.l[2] & 0xffff;
+ guint32 time = xevent->xclient.data.l[3];
+ Atom action = xevent->xclient.data.l[4];
+ GdkDisplay *display;
+ GdkX11Display *display_x11;
+ GdkDragContext *context;
+ GdkX11DragContext *context_x11;
+
+ if (!event->any.window ||
+ gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
+ return GDK_FILTER_CONTINUE; /* Not for us */
+
+ GDK_NOTE (DND,
+ g_message ("XdndPosition: source_window: %#x position: (%d, %d) time: %d action: %ld",
+ source_window, x_root, y_root, time, action));
+
+ display = GDK_WINDOW_DISPLAY (event->any.window);
+ display_x11 = GDK_X11_DISPLAY (display);
+
+ xdnd_precache_atoms (display);
+
+ context = display_x11->current_dest_drag;
+
+ if ((context != NULL) &&
+ (context->protocol == GDK_DRAG_PROTO_XDND) &&
+ (GDK_WINDOW_XID (context->source_window) == source_window))
+ {
+ context_x11 = GDK_X11_DRAG_CONTEXT (context);
+
+ event->dnd.type = GDK_DRAG_MOTION;
+ event->dnd.context = context;
+ gdk_event_set_device (event, gdk_drag_context_get_device (context));
+ g_object_ref (context);
+
+ event->dnd.time = time;
+
+ context->suggested_action = xdnd_action_from_atom (display, action);
+
+ if (!context_x11->xdnd_have_actions)
+ context->actions = context->suggested_action;
+
+ event->dnd.x_root = x_root;
+ event->dnd.y_root = y_root;
+
+ context_x11->last_x = x_root;
+ context_x11->last_y = y_root;
+
+ return GDK_FILTER_TRANSLATE;
+ }
+
+ return GDK_FILTER_REMOVE;
+}
+
+static GdkFilterReturn
+xdnd_drop_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent = (XEvent *)xev;
+ guint32 source_window = xevent->xclient.data.l[0];
+ guint32 time = xevent->xclient.data.l[2];
+ GdkDisplay *display;
+ GdkX11Display *display_x11;
+ GdkDragContext *context;
+ GdkX11DragContext *context_x11;
+
+ if (!event->any.window ||
+ gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
+ return GDK_FILTER_CONTINUE; /* Not for us */
+
+ GDK_NOTE (DND,
+ g_message ("XdndDrop: source_window: %#x time: %d",
+ source_window, time));
+
+ display = GDK_WINDOW_DISPLAY (event->any.window);
+ display_x11 = GDK_X11_DISPLAY (display);
+
+ xdnd_precache_atoms (display);
+
+ context = display_x11->current_dest_drag;
+
+ if ((context != NULL) &&
+ (context->protocol == GDK_DRAG_PROTO_XDND) &&
+ (GDK_WINDOW_XID (context->source_window) == source_window))
+ {
+ context_x11 = GDK_X11_DRAG_CONTEXT (context);
+ event->dnd.type = GDK_DROP_START;
+
+ event->dnd.context = context;
+ gdk_event_set_device (event, gdk_drag_context_get_device (context));
+ g_object_ref (context);
+
+ event->dnd.time = time;
+ event->dnd.x_root = context_x11->last_x;
+ event->dnd.y_root = context_x11->last_y;
+
+ gdk_x11_window_set_user_time (event->any.window, time);
+
+ return GDK_FILTER_TRANSLATE;
+ }
+
+ return GDK_FILTER_REMOVE;
+}
+
+GdkFilterReturn
+_gdk_x11_dnd_filter (GdkXEvent *xev,
+ GdkEvent *event,
+ gpointer data)
+{
+ XEvent *xevent = (XEvent *) xev;
+ GdkDisplay *display;
+ int i;
+
+ if (!GDK_IS_X11_WINDOW (event->any.window))
+ return GDK_FILTER_CONTINUE;
+
+ if (xevent->type != ClientMessage)
+ return GDK_FILTER_CONTINUE;
+
+ display = GDK_WINDOW_DISPLAY (event->any.window);
+
+ for (i = 0; i < G_N_ELEMENTS (xdnd_filters); i++)
+ {
+ if (xevent->xclient.message_type != gdk_x11_get_xatom_by_name_for_display (display, xdnd_filters[i].atom_name))
+ continue;
+
+ return xdnd_filters[i].func (xev, event, data);
+ }
+
+ return GDK_FILTER_CONTINUE;
+}
+
+/* Source side */
+
+static void
+gdk_drag_do_leave (GdkX11DragContext *context_x11,
+ guint32 time)
+{
+ GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
+
+ if (context->dest_window)
+ {
+ switch (context->protocol)
+ {
+ case GDK_DRAG_PROTO_XDND:
+ xdnd_send_leave (context_x11);
+ break;
+ case GDK_DRAG_PROTO_ROOTWIN:
+ case GDK_DRAG_PROTO_NONE:
+ default:
+ break;
+ }
+
+ g_object_unref (context->dest_window);
+ context->dest_window = NULL;
+ }
+}
+
+GdkDragContext *
+_gdk_x11_window_drag_begin (GdkWindow *window,
+ GdkDevice *device,
+ GList *targets)
+{
+ GdkDragContext *context;
+
+ context = (GdkDragContext *) g_object_new (GDK_TYPE_X11_DRAG_CONTEXT, NULL);
+
+ context->is_source = TRUE;
+ context->source_window = window;
+ g_object_ref (window);
+
+ context->targets = g_list_copy (targets);
+ precache_target_list (context);
+
+ context->actions = 0;
+
+ gdk_drag_context_set_device (context, device);
+
+ return context;
+}
+
+Window
+_gdk_x11_display_get_drag_protocol (GdkDisplay *display,
+ Window xid,
+ GdkDragProtocol *protocol,
+ guint *version)
+
+{
+ GdkWindow *window;
+ Window retval;
+
+ base_precache_atoms (display);
+
+ /* Check for a local drag */
+ window = gdk_x11_window_lookup_for_display (display, xid);
+ if (window && gdk_window_get_window_type (window) != GDK_WINDOW_FOREIGN)
+ {
+ if (g_object_get_data (G_OBJECT (window), "gdk-dnd-registered") != NULL)
+ {
+ *protocol = GDK_DRAG_PROTO_XDND;
+ *version = 5;
+ xdnd_precache_atoms (display);
+ GDK_NOTE (DND, g_message ("Entering local Xdnd window %#x\n", (guint) xid));
+ return xid;
+ }
+ else if (_gdk_x11_display_is_root_window (display, xid))
+ {
+ *protocol = GDK_DRAG_PROTO_ROOTWIN;
+ GDK_NOTE (DND, g_message ("Entering root window\n"));
+ return xid;
+ }
+ }
+ else if ((retval = xdnd_check_dest (display, xid, version)))
+ {
+ *protocol = GDK_DRAG_PROTO_XDND;
+ xdnd_precache_atoms (display);
+ GDK_NOTE (DND, g_message ("Entering Xdnd window %#x\n", (guint) xid));
+ return retval;
+ }
+ else
+ {
+ /* Check if this is a root window */
+ gboolean rootwin = FALSE;
+
+ if (_gdk_x11_display_is_root_window (display, (Window) xid))
+ rootwin = TRUE;
+
+ if (rootwin)
+ {
+ GDK_NOTE (DND, g_message ("Entering root window\n"));
+ *protocol = GDK_DRAG_PROTO_ROOTWIN;
+ return xid;
+ }
+ }
+
+ *protocol = GDK_DRAG_PROTO_NONE;
+
+ return 0; /* a.k.a. None */
+}
+
+static GdkWindowCache *
+drag_context_find_window_cache (GdkX11DragContext *context_x11,
+ GdkScreen *screen)
+{
+ GSList *list;
+ GdkWindowCache *cache;
+
+ for (list = context_x11->window_caches; list; list = list->next)
+ {
+ cache = list->data;
+ if (cache->screen == screen)
+ return cache;
+ }
+
+ cache = gdk_window_cache_get (screen);
+ context_x11->window_caches = g_slist_prepend (context_x11->window_caches, cache);
+
+ return cache;
+}
+
+static GdkWindow *
+gdk_x11_drag_context_find_window (GdkDragContext *context,
+ GdkWindow *drag_window,
+ GdkScreen *screen,
+ gint x_root,
+ gint y_root,
+ GdkDragProtocol *protocol)
+{
+ GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
+ GdkWindowCache *window_cache;
+ GdkDisplay *display;
+ Window dest;
+ GdkWindow *dest_window;
+
+ display = GDK_WINDOW_DISPLAY (context->source_window);
+
+ window_cache = drag_context_find_window_cache (context_x11, screen);
+
+ dest = get_client_window_at_coords (window_cache,
+ drag_window && GDK_WINDOW_IS_X11 (drag_window) ?
+ GDK_WINDOW_XID (drag_window) : None,
+ x_root, y_root);
+
+ if (context_x11->dest_xid != dest)
+ {
+ Window recipient;
+ context_x11->dest_xid = dest;
+
+ /* Check if new destination accepts drags, and which protocol */
+
+ /* There is some ugliness here. We actually need to pass
+ * _three_ pieces of information to drag_motion - dest_window,
+ * protocol, and the XID of the unproxied window. The first
+ * two are passed explicitely, the third implicitly through
+ * protocol->dest_xid.
+ */
+ recipient = _gdk_x11_display_get_drag_protocol (display,
+ dest,
+ protocol,
+ &context_x11->version);
+
+ if (recipient != None)
+ dest_window = gdk_x11_window_foreign_new_for_display (display, recipient);
+ else
+ dest_window = NULL;
+ }
+ else
+ {
+ dest_window = context->dest_window;
+ if (dest_window)
+ g_object_ref (dest_window);
+ *protocol = context->protocol;
+ }
+
+ return dest_window;
+}
+
+static gboolean
+gdk_x11_drag_context_drag_motion (GdkDragContext *context,
+ GdkWindow *dest_window,
+ GdkDragProtocol protocol,
+ gint x_root,
+ gint y_root,
+ GdkDragAction suggested_action,
+ GdkDragAction possible_actions,
+ guint32 time)
+{
+ GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
+
+ context_x11->old_actions = context->actions;
+ context->actions = possible_actions;
+
+ if (context_x11->old_actions != possible_actions)
+ context_x11->xdnd_actions_set = FALSE;
+
+ if (protocol == GDK_DRAG_PROTO_XDND && context_x11->version == 0)
+ {
+ /* This ugly hack is necessary since GTK+ doesn't know about
+ * the XDND protocol version, and in particular doesn't know
+ * that gdk_drag_find_window_for_screen() has the side-effect
+ * of setting context_x11->version, and therefore sometimes call
+ * gdk_drag_motion() without a prior call to
+ * gdk_drag_find_window_for_screen(). This happens, e.g.
+ * when GTK+ is proxying DND events to embedded windows.
+ */
+ if (dest_window)
+ {
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (dest_window);
+
+ xdnd_check_dest (display,
+ GDK_WINDOW_XID (dest_window),
+ &context_x11->version);
+ }
+ }
+
+ /* When we have a Xdnd target, make sure our XdndActionList
+ * matches the current actions;
+ */
+ if (protocol == GDK_DRAG_PROTO_XDND && !context_x11->xdnd_actions_set)
+ {
+ if (dest_window)
+ {
+ if (gdk_window_get_window_type (dest_window) == GDK_WINDOW_FOREIGN)
+ xdnd_set_actions (context_x11);
+ else if (context->dest_window == dest_window)
+ {
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (dest_window);
+ GdkDragContext *dest_context;
+
+ dest_context = gdk_drag_context_find (display, FALSE,
+ GDK_WINDOW_XID (context->source_window),
+ GDK_WINDOW_XID (dest_window));
+
+ if (dest_context)
+ {
+ dest_context->actions = context->actions;
+ GDK_X11_DRAG_CONTEXT (dest_context)->xdnd_have_actions = TRUE;
+ }
+ }
+ }
+ }
+
+ if (context->dest_window != dest_window)
+ {
+ GdkEvent *temp_event;
+
+ /* Send a leave to the last destination */
+ gdk_drag_do_leave (context_x11, time);
+ context_x11->drag_status = GDK_DRAG_STATUS_DRAG;
+
+ /* Check if new destination accepts drags, and which protocol */
+
+ if (dest_window)
+ {
+ context->dest_window = dest_window;
+ context_x11->drop_xid = context_x11->dest_xid;
+ g_object_ref (context->dest_window);
+ context->protocol = protocol;
+
+ switch (protocol)
+ {
+ case GDK_DRAG_PROTO_XDND:
+ xdnd_send_enter (context_x11);
+ break;
+
+ case GDK_DRAG_PROTO_ROOTWIN:
+ case GDK_DRAG_PROTO_NONE:
+ default:
+ break;
+ }
+ context_x11->old_action = suggested_action;
+ context->suggested_action = suggested_action;
+ context_x11->old_actions = possible_actions;
+ }
+ else
+ {
+ context->dest_window = NULL;
+ context_x11->drop_xid = None;
+ context->action = 0;
+ }
+
+ /* Push a status event, to let the client know that
+ * the drag changed
+ */
+ temp_event = gdk_event_new (GDK_DRAG_STATUS);
+ temp_event->dnd.window = g_object_ref (context->source_window);
+ /* We use this to signal a synthetic status. Perhaps
+ * we should use an extra field...
+ */
+ temp_event->dnd.send_event = TRUE;
+
+ temp_event->dnd.context = g_object_ref (context);
+ temp_event->dnd.time = time;
+ gdk_event_set_device (temp_event, gdk_drag_context_get_device (context));
+
+ gdk_event_put (temp_event);
+ gdk_event_free (temp_event);
+ }
+ else
+ {
+ context_x11->old_action = context->suggested_action;
+ context->suggested_action = suggested_action;
+ }
+
+ /* Send a drag-motion event */
+
+ context_x11->last_x = x_root;
+ context_x11->last_y = y_root;
+
+ if (context->dest_window)
+ {
+ if (context_x11->drag_status == GDK_DRAG_STATUS_DRAG)
+ {
+ switch (context->protocol)
+ {
+ case GDK_DRAG_PROTO_XDND:
+ xdnd_send_motion (context_x11, x_root, y_root, suggested_action, time);
+ break;
+
+ case GDK_DRAG_PROTO_ROOTWIN:
+ {
+ GdkEvent *temp_event;
+ /* GTK+ traditionally has used application/x-rootwin-drop,
+ * but the XDND spec specifies x-rootwindow-drop.
+ */
+ GdkAtom target1 = gdk_atom_intern_static_string ("application/x-rootwindow-drop");
+ GdkAtom target2 = gdk_atom_intern_static_string ("application/x-rootwin-drop");
+
+ if (g_list_find (context->targets,
+ GDK_ATOM_TO_POINTER (target1)) ||
+ g_list_find (context->targets,
+ GDK_ATOM_TO_POINTER (target2)))
+ context->action = context->suggested_action;
+ else
+ context->action = 0;
+
+ temp_event = gdk_event_new (GDK_DRAG_STATUS);
+ temp_event->dnd.window = g_object_ref (context->source_window);
+ temp_event->dnd.send_event = FALSE;
+ temp_event->dnd.context = g_object_ref (context);
+ temp_event->dnd.time = time;
+ gdk_event_set_device (temp_event, gdk_drag_context_get_device (context));
+
+ gdk_event_put (temp_event);
+ gdk_event_free (temp_event);
+ }
+ break;
+ case GDK_DRAG_PROTO_NONE:
+ g_warning ("GDK_DRAG_PROTO_NONE is not valid in gdk_drag_motion()");
+ break;
+ default:
+ break;
+ }
+ }
+ else
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static void
+gdk_x11_drag_context_drag_abort (GdkDragContext *context,
+ guint32 time)
+{
+ gdk_drag_do_leave (GDK_X11_DRAG_CONTEXT (context), time);
+}
+
+static void
+gdk_x11_drag_context_drag_drop (GdkDragContext *context,
+ guint32 time)
+{
+ GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
+
+ if (context->dest_window)
+ {
+ switch (context->protocol)
+ {
+ case GDK_DRAG_PROTO_XDND:
+ xdnd_send_drop (context_x11, time);
+ break;
+
+ case GDK_DRAG_PROTO_ROOTWIN:
+ g_warning ("Drops for GDK_DRAG_PROTO_ROOTWIN must be handled internally");
+ break;
+ case GDK_DRAG_PROTO_NONE:
+ g_warning ("GDK_DRAG_PROTO_NONE is not valid in gdk_drag_drop()");
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+/* Destination side */
+
+static void
+gdk_x11_drag_context_drag_status (GdkDragContext *context,
+ GdkDragAction action,
+ guint32 time_)
+{
+ GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
+ XEvent xev;
+ GdkDisplay *display;
+
+ display = GDK_WINDOW_DISPLAY (context->source_window);
+
+ context->action = action;
+
+ if (context->protocol == GDK_DRAG_PROTO_XDND)
+ {
+ xev.xclient.type = ClientMessage;
+ xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndStatus");
+ xev.xclient.format = 32;
+ xev.xclient.window = GDK_WINDOW_XID (context->source_window);
+
+ xev.xclient.data.l[0] = GDK_WINDOW_XID (context->dest_window);
+ xev.xclient.data.l[1] = (action != 0) ? (2 | 1) : 0;
+ xev.xclient.data.l[2] = 0;
+ xev.xclient.data.l[3] = 0;
+ xev.xclient.data.l[4] = xdnd_action_to_atom (display, action);
+ if (!xdnd_send_xevent (context_x11, context->source_window, FALSE, &xev))
+ {
+ GDK_NOTE (DND,
+ g_message ("Send event to %lx failed",
+ GDK_WINDOW_XID (context->source_window)));
+ }
+ }
+
+ context_x11->old_action = action;
+}
+
+static void
+gdk_x11_drag_context_drop_reply (GdkDragContext *context,
+ gboolean accepted,
+ guint32 time_)
+{
+}
+
+static void
+gdk_x11_drag_context_drop_finish (GdkDragContext *context,
+ gboolean success,
+ guint32 time)
+{
+ if (context->protocol == GDK_DRAG_PROTO_XDND)
+ {
+ GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
+ XEvent xev;
+
+ xev.xclient.type = ClientMessage;
+ xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndFinished");
+ xev.xclient.format = 32;
+ xev.xclient.window = GDK_WINDOW_XID (context->source_window);
+
+ xev.xclient.data.l[0] = GDK_WINDOW_XID (context->dest_window);
+ if (success)
+ {
+ xev.xclient.data.l[1] = 1;
+ xev.xclient.data.l[2] = xdnd_action_to_atom (display,
+ context->action);
+ }
+ else
+ {
+ xev.xclient.data.l[1] = 0;
+ xev.xclient.data.l[2] = None;
+ }
+ xev.xclient.data.l[3] = 0;
+ xev.xclient.data.l[4] = 0;
+
+ if (!xdnd_send_xevent (GDK_X11_DRAG_CONTEXT (context), context->source_window, FALSE, &xev))
+ {
+ GDK_NOTE (DND,
+ g_message ("Send event to %lx failed",
+ GDK_WINDOW_XID (context->source_window)));
+ }
+ }
+}
+
+void
+_gdk_x11_window_register_dnd (GdkWindow *window)
+{
+ static const gulong xdnd_version = 5;
+ GdkDisplay *display = gdk_window_get_display (window);
+
+ g_return_if_fail (window != NULL);
+
+ if (gdk_window_get_window_type (window) == GDK_WINDOW_OFFSCREEN)
+ return;
+
+ base_precache_atoms (display);
+
+ if (g_object_get_data (G_OBJECT (window), "gdk-dnd-registered") != NULL)
+ return;
+ else
+ g_object_set_data (G_OBJECT (window), "gdk-dnd-registered", GINT_TO_POINTER (TRUE));
+
+ /* Set XdndAware */
+
+ /* The property needs to be of type XA_ATOM, not XA_INTEGER. Blech */
+ XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
+ GDK_WINDOW_XID (window),
+ gdk_x11_get_xatom_by_name_for_display (display, "XdndAware"),
+ XA_ATOM, 32, PropModeReplace,
+ (guchar *)&xdnd_version, 1);
+}
+
+static GdkAtom
+gdk_x11_drag_context_get_selection (GdkDragContext *context)
+{
+ if (context->protocol == GDK_DRAG_PROTO_XDND)
+ return gdk_atom_intern_static_string ("XdndSelection");
+ else
+ return GDK_NONE;
+}
+
+static gboolean
+gdk_x11_drag_context_drop_status (GdkDragContext *context)
+{
+ return ! GDK_X11_DRAG_CONTEXT (context)->drop_failed;
}
projects / ~andy / gtk / blobdiff