forked from AuroraMiddleware/gtk
c78036fc51
This code is very similar to the handling for these targets in the clipboard case. Fixes: #3642
891 lines
28 KiB
C
891 lines
28 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkdropprivate.h"
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#include "gdk-private.h"
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#include "gdkasync.h"
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#include "gdkclipboardprivate.h"
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#include "gdkclipboard-x11.h"
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#include "gdkdeviceprivate.h"
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#include "gdkdisplay-x11.h"
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#include "gdkdragprivate.h"
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#include "gdkinternals.h"
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#include "gdkintl.h"
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#include "gdkprivate-x11.h"
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#include "gdkscreen-x11.h"
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#include "gdkselectioninputstream-x11.h"
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#include "gdkselectionoutputstream-x11.h"
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#include "gdktextlistconverter-x11.h"
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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#include <X11/extensions/shape.h>
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#ifdef HAVE_XCOMPOSITE
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#include <X11/extensions/Xcomposite.h>
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#endif
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#include <string.h>
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#define GDK_TYPE_X11_DROP (gdk_x11_drop_get_type())
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G_DECLARE_FINAL_TYPE (GdkX11Drop, gdk_x11_drop, GDK, X11_DROP, GdkDrop)
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struct _GdkX11Drop
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{
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GdkDrop parent_instance;
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Window source_window;
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guint16 last_x; /* Coordinates from last event */
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guint16 last_y;
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gulong timestamp; /* Timestamp we claimed the DND selection with */
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guint version; /* Xdnd protocol version */
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GdkDragAction xdnd_actions; /* What is currently set in XdndActionList */
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GdkDragAction suggested_action;
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guint xdnd_targets_set : 1; /* Whether we've already set XdndTypeList */
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guint xdnd_have_actions : 1; /* Whether an XdndActionList was provided */
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guint enter_emitted : 1; /* Set after gdk_drop_emit_enter() */
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};
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struct _GdkX11DropClass
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{
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GdkDropClass parent_class;
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};
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/* Forward declarations */
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static gboolean xdnd_source_surface_filter (GdkDisplay *display,
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const XEvent *xevent,
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gpointer data);
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static gboolean xdnd_enter_filter (GdkSurface *surface,
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const XEvent *xevent);
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static gboolean xdnd_leave_filter (GdkSurface *surface,
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const XEvent *xevent);
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static gboolean xdnd_position_filter (GdkSurface *surface,
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const XEvent *xevent);
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static gboolean xdnd_drop_filter (GdkSurface *surface,
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const XEvent *xevent);
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static const struct {
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const char *atom_name;
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gboolean (* func) (GdkSurface *surface, const XEvent *event);
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} xdnd_filters[] = {
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{ "XdndEnter", xdnd_enter_filter },
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{ "XdndLeave", xdnd_leave_filter },
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{ "XdndPosition", xdnd_position_filter },
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{ "XdndDrop", xdnd_drop_filter },
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};
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G_DEFINE_TYPE (GdkX11Drop, gdk_x11_drop, GDK_TYPE_DROP)
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static GInputStream *
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text_list_convert (GdkDisplay *display,
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GInputStream *stream,
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const char *encoding,
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int format)
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{
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GInputStream *converter_stream;
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GConverter *converter;
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converter = gdk_x11_text_list_converter_to_utf8_new (display, encoding, format);
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converter_stream = g_converter_input_stream_new (stream, converter);
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g_object_unref (converter);
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g_object_unref (stream);
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return converter_stream;
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}
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static GInputStream *
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no_convert (GdkDisplay *display,
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GInputStream *stream,
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const char *encoding,
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int format)
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{
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return stream;
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}
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static const struct {
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const char *x_target;
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const char *mime_type;
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GInputStream * (* convert) (GdkDisplay *, GInputStream *, const char *, int);
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const char *type;
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int format;
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} special_targets[] = {
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{ "UTF8_STRING", "text/plain;charset=utf-8", no_convert, "UTF8_STRING", 8 },
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{ "COMPOUND_TEXT", "text/plain;charset=utf-8", text_list_convert, "COMPOUND_TEXT", 8 },
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{ "TEXT", "text/plain;charset=utf-8", text_list_convert, "STRING", 8 },
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{ "STRING", "text/plain;charset=utf-8", text_list_convert, "STRING", 8 },
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{ "TARGETS", NULL, NULL, "ATOM", 32 },
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{ "TIMESTAMP", NULL, NULL, "INTEGER", 32 },
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{ "SAVE_TARGETS", NULL, NULL, "NULL", 32 }
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};
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static void
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gdk_x11_drop_read_got_stream (GObject *source,
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GAsyncResult *res,
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gpointer data)
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{
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GTask *task = data;
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GError *error = NULL;
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GInputStream *stream;
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const char *type;
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int format;
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stream = gdk_x11_selection_input_stream_new_finish (res, &type, &format, &error);
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if (stream == NULL)
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{
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GSList *targets, *next;
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targets = g_task_get_task_data (task);
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next = targets->next;
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if (next)
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{
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GdkDrop *drop = GDK_DROP (g_task_get_source_object (task));
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GDK_DISPLAY_NOTE (gdk_drop_get_display (drop), DND, g_printerr ("reading %s failed, trying %s next\n",
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(char *) targets->data, (char *) next->data));
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targets->next = NULL;
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g_task_set_task_data (task, next, (GDestroyNotify) g_slist_free);
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gdk_x11_selection_input_stream_new_async (gdk_drop_get_display (drop),
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"XdndSelection",
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next->data,
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CurrentTime,
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g_task_get_priority (task),
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g_task_get_cancellable (task),
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gdk_x11_drop_read_got_stream,
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task);
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g_error_free (error);
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return;
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}
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g_task_return_error (task, error);
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}
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else
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{
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gsize i;
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const char *mime_type = ((GSList *) g_task_get_task_data (task))->data;
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GdkDrop *drop = GDK_DROP (g_task_get_source_object (task));
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for (i = 0; i < G_N_ELEMENTS (special_targets); i++)
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{
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if (g_str_equal (mime_type, special_targets[i].x_target))
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{
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g_assert (special_targets[i].mime_type != NULL);
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mime_type = g_intern_string (special_targets[i].mime_type);
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g_task_set_task_data (task, g_slist_prepend (NULL, (gpointer) mime_type), (GDestroyNotify) g_slist_free);
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stream = special_targets[i].convert (gdk_drop_get_display (drop), stream, type, format);
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break;
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}
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}
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GDK_NOTE (DND, g_printerr ("reading DND as %s now\n",
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(const char *)((GSList *) g_task_get_task_data (task))->data));
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g_task_return_pointer (task, stream, g_object_unref);
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}
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g_object_unref (task);
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}
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static void
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gdk_x11_drop_read_async (GdkDrop *drop,
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GdkContentFormats *formats,
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int io_priority,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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GSList *targets;
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GTask *task;
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task = g_task_new (drop, cancellable, callback, user_data);
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g_task_set_priority (task, io_priority);
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g_task_set_source_tag (task, gdk_x11_drop_read_async);
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targets = gdk_x11_clipboard_formats_to_targets (formats);
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g_task_set_task_data (task, targets, (GDestroyNotify) g_slist_free);
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if (targets == NULL)
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{
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g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
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_("No compatible transfer format found"));
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return;
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}
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GDK_DISPLAY_NOTE (gdk_drop_get_display (drop), DND, g_printerr ("new read for %s (%u other options)\n",
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(char *) targets->data, g_slist_length (targets->next)));
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gdk_x11_selection_input_stream_new_async (gdk_drop_get_display (drop),
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"XdndSelection",
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targets->data,
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CurrentTime,
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io_priority,
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cancellable,
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gdk_x11_drop_read_got_stream,
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task);
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}
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static GInputStream *
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gdk_x11_drop_read_finish (GdkDrop *drop,
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GAsyncResult *result,
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const char **out_mime_type,
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GError **error)
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{
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GTask *task;
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g_return_val_if_fail (g_task_is_valid (result, G_OBJECT (drop)), NULL);
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task = G_TASK (result);
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g_return_val_if_fail (g_task_get_source_tag (task) == gdk_x11_drop_read_async, NULL);
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if (out_mime_type)
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{
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GSList *targets;
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targets = g_task_get_task_data (task);
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*out_mime_type = targets ? targets->data : NULL;
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}
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return g_task_propagate_pointer (task, error);
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}
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static void
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gdk_x11_drop_finalize (GObject *object)
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{
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GdkX11Drop *drop_x11 = GDK_X11_DROP (object);
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if (gdk_drop_get_drag (GDK_DROP (drop_x11)) == NULL)
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{
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g_signal_handlers_disconnect_by_func (gdk_drop_get_display (GDK_DROP (drop_x11)),
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xdnd_source_surface_filter,
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drop_x11);
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/* Should we remove the GDK_PROPERTY_NOTIFY mask?
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* but we might want it for other reasons. (Like
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* INCR selection transactions).
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*/
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}
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G_OBJECT_CLASS (gdk_x11_drop_parent_class)->finalize (object);
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}
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/* Utility functions */
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#ifdef G_ENABLE_DEBUG
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static void
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print_target_list (GdkContentFormats *formats)
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{
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char *name = gdk_content_formats_to_string (formats);
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g_message ("DND formats: %s", name);
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g_free (name);
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}
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#endif /* G_ENABLE_DEBUG */
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/*************************************************************
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***************************** XDND **************************
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*************************************************************/
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/* Utility functions */
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static struct {
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const char *name;
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GdkDragAction action;
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} xdnd_actions_table[] = {
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{ "XdndActionCopy", GDK_ACTION_COPY },
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{ "XdndActionMove", GDK_ACTION_MOVE },
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{ "XdndActionLink", GDK_ACTION_LINK },
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{ "XdndActionAsk", GDK_ACTION_ASK },
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{ "XdndActionPrivate", GDK_ACTION_COPY },
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};
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static const int xdnd_n_actions = G_N_ELEMENTS (xdnd_actions_table);
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static GdkDragAction
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xdnd_action_from_atom (GdkDisplay *display,
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Atom xatom)
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{
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const char *name;
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int i;
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if (xatom == None)
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return 0;
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name = gdk_x11_get_xatom_name_for_display (display, xatom);
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for (i = 0; i < xdnd_n_actions; i++)
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if (g_str_equal (name, xdnd_actions_table[i].name))
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return xdnd_actions_table[i].action;
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return 0;
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}
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static Atom
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xdnd_action_to_atom (GdkDisplay *display,
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GdkDragAction action)
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{
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int i;
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for (i = 0; i < xdnd_n_actions; i++)
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if (action == xdnd_actions_table[i].action)
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return gdk_x11_get_xatom_by_name_for_display (display, xdnd_actions_table[i].name);
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return None;
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}
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/* Target side */
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static void
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gdk_x11_drop_update_actions (GdkX11Drop *drop_x11)
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{
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GdkDragAction actions;
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if (!drop_x11->xdnd_have_actions)
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actions = drop_x11->suggested_action;
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else if (drop_x11->suggested_action & GDK_ACTION_ASK)
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actions = drop_x11->xdnd_actions & GDK_ACTION_ALL;
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else
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actions = drop_x11->suggested_action;
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gdk_drop_set_actions (GDK_DROP (drop_x11), actions);
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}
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void
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gdk_x11_drop_read_actions (GdkDrop *drop)
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{
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GdkX11Drop *drop_x11 = GDK_X11_DROP (drop);
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GdkDisplay *display = gdk_drop_get_display (drop);
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GdkDrag *drag;
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GdkDragAction actions = GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK | GDK_ACTION_ASK;
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Atom type;
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int format;
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gulong nitems, after;
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guchar *data;
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Atom *atoms;
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int i;
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drag = gdk_drop_get_drag (drop);
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drop_x11->xdnd_have_actions = FALSE;
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if (drag == NULL)
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{
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/* Get the XdndActionList, if set */
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gdk_x11_display_error_trap_push (display);
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if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display),
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drop_x11->source_window,
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gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"),
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0, 65536,
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False, XA_ATOM, &type, &format, &nitems,
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&after, &data) == Success &&
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type == XA_ATOM)
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{
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actions = 0;
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atoms = (Atom *)data;
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for (i = 0; i < nitems; i++)
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actions |= xdnd_action_from_atom (display, atoms[i]);
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drop_x11->xdnd_have_actions = TRUE;
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#ifdef G_ENABLE_DEBUG
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if (GDK_DISPLAY_DEBUG_CHECK (display, DND))
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{
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GString *action_str = g_string_new (NULL);
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GdkDragAction drop_actions = gdk_drop_get_actions (drop);
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if (drop_actions & GDK_ACTION_MOVE)
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g_string_append(action_str, "MOVE ");
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if (drop_actions & GDK_ACTION_COPY)
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g_string_append(action_str, "COPY ");
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if (drop_actions & GDK_ACTION_LINK)
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g_string_append(action_str, "LINK ");
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if (drop_actions & GDK_ACTION_ASK)
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g_string_append(action_str, "ASK ");
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g_message("Xdnd actions = %s", action_str->str);
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g_string_free (action_str, TRUE);
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}
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#endif /* G_ENABLE_DEBUG */
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}
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if (data)
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XFree (data);
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gdk_x11_display_error_trap_pop_ignored (display);
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}
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else
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{
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actions = gdk_drag_get_actions (drag);
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drop_x11->xdnd_have_actions = TRUE;
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}
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drop_x11->xdnd_actions = actions;
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gdk_x11_drop_update_actions (drop_x11);
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}
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/* We have to make sure that the XdndActionList we keep internally
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* is up to date with the XdndActionList on the source window
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* because we get no notification, because Xdnd wasn’t meant
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* to continually send actions. So we select on PropertyChangeMask
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* and add this filter.
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*/
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static gboolean
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xdnd_source_surface_filter (GdkDisplay *display,
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const XEvent *xevent,
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gpointer data)
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{
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GdkX11Drop *drop_x11 = data;
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if ((xevent->xany.type == PropertyNotify) &&
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(xevent->xany.window == drop_x11->source_window) &&
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(xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList")))
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{
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gdk_x11_drop_read_actions (GDK_DROP (drop_x11));
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}
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return FALSE;
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}
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static gboolean
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xdnd_enter_filter (GdkSurface *surface,
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const XEvent *xevent)
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{
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GdkDisplay *display;
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GdkX11Display *display_x11;
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GdkDrop *drop;
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GdkX11Drop *drop_x11;
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GdkDrag *drag;
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GdkSeat *seat;
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int i;
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Atom type;
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int format;
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gulong nitems, after;
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guchar *data;
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Atom *atoms;
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GdkContentFormats *content_formats;
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GPtrArray *formats;
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Window source_window;
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gboolean get_types;
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int version;
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source_window = xevent->xclient.data.l[0];
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get_types = ((xevent->xclient.data.l[1] & 1) != 0);
|
||
version = (xevent->xclient.data.l[1] & 0xff000000) >> 24;
|
||
|
||
display = gdk_surface_get_display (surface);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
GDK_DISPLAY_NOTE (display, DND,
|
||
g_message ("XdndEnter: source_window: %#lx, version: %#x",
|
||
source_window, version));
|
||
|
||
if (version < 3)
|
||
{
|
||
/* Old source ignore */
|
||
GDK_DISPLAY_NOTE (display, DND, g_message ("Ignored old XdndEnter message"));
|
||
return TRUE;
|
||
}
|
||
|
||
if (display_x11->current_drop)
|
||
{
|
||
if (GDK_X11_DROP (display_x11->current_drop)->enter_emitted)
|
||
gdk_drop_emit_leave_event (display_x11->current_drop, FALSE, GDK_CURRENT_TIME);
|
||
g_clear_object (&display_x11->current_drop);
|
||
}
|
||
|
||
seat = gdk_display_get_default_seat (display);
|
||
|
||
formats = g_ptr_array_new ();
|
||
if (get_types)
|
||
{
|
||
gdk_x11_display_error_trap_push (display);
|
||
XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display),
|
||
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))
|
||
{
|
||
if (data)
|
||
XFree (data);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
atoms = (Atom *)data;
|
||
for (i = 0; i < nitems; i++)
|
||
g_ptr_array_add (formats,
|
||
(gpointer) gdk_x11_get_xatom_name_for_display (display, atoms[i]));
|
||
|
||
XFree (atoms);
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; i < 3; i++)
|
||
if (xevent->xclient.data.l[2 + i])
|
||
g_ptr_array_add (formats,
|
||
(gpointer) gdk_x11_get_xatom_name_for_display (display,
|
||
xevent->xclient.data.l[2 + i]));
|
||
}
|
||
content_formats = gdk_content_formats_new ((const char **) formats->pdata, formats->len);
|
||
g_ptr_array_unref (formats);
|
||
|
||
#ifdef G_ENABLE_DEBUG
|
||
if (GDK_DISPLAY_DEBUG_CHECK (display, DND))
|
||
print_target_list (content_formats);
|
||
#endif /* G_ENABLE_DEBUG */
|
||
|
||
drag = gdk_x11_drag_find (display, source_window, GDK_SURFACE_XID (surface));
|
||
|
||
drop_x11 = g_object_new (GDK_TYPE_X11_DROP,
|
||
"device", gdk_seat_get_pointer (seat),
|
||
"drag", drag,
|
||
"formats", content_formats,
|
||
"surface", surface,
|
||
NULL);
|
||
drop = GDK_DROP (drop_x11);
|
||
|
||
drop_x11->version = version;
|
||
|
||
/* FIXME: Should extend DnD protocol to have device info */
|
||
|
||
drop_x11->source_window = source_window;
|
||
if (drag == NULL)
|
||
{
|
||
Display *xdisplay = gdk_x11_display_get_xdisplay (display);
|
||
XWindowAttributes attrs;
|
||
|
||
gdk_x11_display_error_trap_push (display);
|
||
XGetWindowAttributes (xdisplay, source_window, &attrs);
|
||
if (!(attrs.your_event_mask & PropertyChangeMask))
|
||
{
|
||
XSelectInput (xdisplay, source_window, attrs.your_event_mask | PropertyChangeMask);
|
||
}
|
||
gdk_x11_display_error_trap_pop_ignored (display);
|
||
|
||
g_signal_connect (display, "xevent", G_CALLBACK (xdnd_source_surface_filter), drop);
|
||
}
|
||
gdk_x11_drop_read_actions (drop);
|
||
|
||
display_x11->current_drop = drop;
|
||
|
||
gdk_content_formats_unref (content_formats);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
xdnd_leave_filter (GdkSurface *surface,
|
||
const XEvent *xevent)
|
||
{
|
||
Window source_window = xevent->xclient.data.l[0];
|
||
GdkDisplay *display;
|
||
GdkX11Display *display_x11;
|
||
|
||
display = gdk_surface_get_display (surface);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
GDK_DISPLAY_NOTE (display, DND,
|
||
g_message ("XdndLeave: source_window: %#lx",
|
||
source_window));
|
||
|
||
if ((display_x11->current_drop != NULL) &&
|
||
(GDK_X11_DROP (display_x11->current_drop)->source_window == source_window))
|
||
{
|
||
if (GDK_X11_DROP (display_x11->current_drop)->enter_emitted)
|
||
gdk_drop_emit_leave_event (display_x11->current_drop, FALSE, GDK_CURRENT_TIME);
|
||
|
||
g_clear_object (&display_x11->current_drop);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
xdnd_position_filter (GdkSurface *surface,
|
||
const XEvent *xevent)
|
||
{
|
||
GdkX11Surface *impl;
|
||
Window 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;
|
||
GdkDrop *drop;
|
||
GdkX11Drop *drop_x11;
|
||
|
||
display = gdk_surface_get_display (surface);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
GDK_DISPLAY_NOTE (display, DND,
|
||
g_message ("XdndPosition: source_window: %#lx position: (%d, %d) time: %d action: %ld",
|
||
source_window, x_root, y_root, time, action));
|
||
|
||
drop = display_x11->current_drop;
|
||
drop_x11 = GDK_X11_DROP (drop);
|
||
|
||
if ((drop != NULL) &&
|
||
(drop_x11->source_window == source_window))
|
||
{
|
||
surface = gdk_drop_get_surface (drop);
|
||
impl = GDK_X11_SURFACE (surface);
|
||
|
||
drop_x11->suggested_action = xdnd_action_from_atom (display, action);
|
||
gdk_x11_drop_update_actions (drop_x11);
|
||
|
||
drop_x11->last_x = x_root / impl->surface_scale;
|
||
drop_x11->last_y = y_root / impl->surface_scale;
|
||
|
||
if (drop_x11->enter_emitted)
|
||
{
|
||
gdk_drop_emit_motion_event (drop, FALSE, drop_x11->last_x - impl->abs_x, drop_x11->last_y - impl->abs_y, time);
|
||
}
|
||
else
|
||
{
|
||
gdk_drop_emit_enter_event (drop, FALSE, drop_x11->last_x - impl->abs_x, drop_x11->last_y - impl->abs_y, time);
|
||
drop_x11->enter_emitted = TRUE;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
xdnd_drop_filter (GdkSurface *surface,
|
||
const XEvent *xevent)
|
||
{
|
||
Window source_window = xevent->xclient.data.l[0];
|
||
guint32 time = xevent->xclient.data.l[2];
|
||
GdkDisplay *display;
|
||
GdkX11Display *display_x11;
|
||
GdkDrop *drop;
|
||
GdkX11Drop *drop_x11;
|
||
|
||
display = gdk_surface_get_display (surface);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
GDK_DISPLAY_NOTE (display, DND,
|
||
g_message ("XdndDrop: source_window: %#lx time: %d",
|
||
source_window, time));
|
||
|
||
drop = display_x11->current_drop;
|
||
drop_x11 = GDK_X11_DROP (drop);
|
||
|
||
if ((drop != NULL) &&
|
||
(drop_x11->source_window == source_window))
|
||
{
|
||
GdkSurface *s = gdk_drop_get_surface (drop);
|
||
GdkX11Surface *si = GDK_X11_SURFACE (s);
|
||
gdk_x11_surface_set_user_time (s, time);
|
||
|
||
gdk_drop_emit_drop_event (drop, FALSE, drop_x11->last_x - si->abs_x, drop_x11->last_y - si->abs_y, time);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
gboolean
|
||
gdk_x11_drop_filter (GdkSurface *surface,
|
||
const XEvent *xevent)
|
||
|
||
{
|
||
GdkDisplay *display;
|
||
int i;
|
||
|
||
if (!GDK_IS_X11_SURFACE (surface))
|
||
return GDK_FILTER_CONTINUE;
|
||
|
||
if (xevent->type != ClientMessage)
|
||
return GDK_FILTER_CONTINUE;
|
||
|
||
display = GDK_SURFACE_DISPLAY (surface);
|
||
|
||
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;
|
||
|
||
if (xdnd_filters[i].func (surface, xevent))
|
||
return TRUE;
|
||
else
|
||
return FALSE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/* Destination side */
|
||
|
||
static void
|
||
gdk_x11_drop_do_nothing (Window window,
|
||
gboolean success,
|
||
gpointer data)
|
||
{
|
||
#ifdef G_ENABLE_DEBUG
|
||
GdkDisplay *display = data;
|
||
|
||
if (!success)
|
||
{
|
||
GDK_DISPLAY_NOTE (display, DND, g_message ("Send event to %lx failed", window));
|
||
}
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drop_status (GdkDrop *drop,
|
||
GdkDragAction actions,
|
||
GdkDragAction preferred)
|
||
{
|
||
GdkX11Drop *drop_x11 = GDK_X11_DROP (drop);
|
||
GdkDragAction possible_actions, suggested_action;
|
||
XEvent xev;
|
||
GdkDisplay *display;
|
||
|
||
display = gdk_drop_get_display (drop);
|
||
|
||
possible_actions = actions & gdk_drop_get_actions (drop);
|
||
|
||
if (drop_x11->suggested_action != 0)
|
||
suggested_action = drop_x11->suggested_action;
|
||
else
|
||
suggested_action = preferred & possible_actions;
|
||
|
||
if (suggested_action == 0 && possible_actions != 0)
|
||
{
|
||
if (possible_actions & GDK_ACTION_COPY)
|
||
suggested_action = GDK_ACTION_COPY;
|
||
else if (possible_actions & GDK_ACTION_MOVE)
|
||
suggested_action = GDK_ACTION_MOVE;
|
||
else if (possible_actions & GDK_ACTION_ASK)
|
||
suggested_action = GDK_ACTION_ASK;
|
||
else
|
||
suggested_action = 0;
|
||
}
|
||
|
||
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 = drop_x11->source_window;
|
||
|
||
xev.xclient.data.l[0] = GDK_SURFACE_XID (gdk_drop_get_surface (drop));
|
||
xev.xclient.data.l[1] = (possible_actions != 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, suggested_action);
|
||
|
||
if (gdk_drop_get_drag (drop))
|
||
{
|
||
gdk_x11_drag_handle_status (display, &xev);
|
||
}
|
||
else
|
||
{
|
||
_gdk_x11_send_client_message_async (display,
|
||
drop_x11->source_window,
|
||
FALSE, 0,
|
||
&xev.xclient,
|
||
gdk_x11_drop_do_nothing,
|
||
display);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drop_finish (GdkDrop *drop,
|
||
GdkDragAction action)
|
||
{
|
||
GdkX11Drop *drop_x11 = GDK_X11_DROP (drop);
|
||
GdkDisplay *display = gdk_drop_get_display (drop);
|
||
XEvent xev;
|
||
|
||
if (action == GDK_ACTION_MOVE)
|
||
{
|
||
XConvertSelection (GDK_DISPLAY_XDISPLAY (display),
|
||
gdk_x11_get_xatom_by_name_for_display (display, "XdndSelection"),
|
||
gdk_x11_get_xatom_by_name_for_display (display, "DELETE"),
|
||
gdk_x11_get_xatom_by_name_for_display (display, "GDK_SELECTION"),
|
||
drop_x11->source_window,
|
||
GDK_X11_DROP (drop)->timestamp);
|
||
/* XXX: Do we need to wait for a reply here before sending the next message? */
|
||
}
|
||
|
||
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 = drop_x11->source_window;
|
||
|
||
xev.xclient.data.l[0] = GDK_SURFACE_XID (gdk_drop_get_surface (drop));
|
||
if (action != 0)
|
||
{
|
||
xev.xclient.data.l[1] = 1;
|
||
xev.xclient.data.l[2] = xdnd_action_to_atom (display, 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 (gdk_drop_get_drag (drop))
|
||
{
|
||
gdk_x11_drag_handle_finished (display, &xev);
|
||
}
|
||
else
|
||
{
|
||
_gdk_x11_send_client_message_async (display,
|
||
drop_x11->source_window,
|
||
FALSE, 0,
|
||
&xev.xclient,
|
||
gdk_x11_drop_do_nothing,
|
||
display);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drop_class_init (GdkX11DropClass *klass)
|
||
{
|
||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
GdkDropClass *drop_class = GDK_DROP_CLASS (klass);
|
||
|
||
object_class->finalize = gdk_x11_drop_finalize;
|
||
|
||
drop_class->status = gdk_x11_drop_status;
|
||
drop_class->finish = gdk_x11_drop_finish;
|
||
drop_class->read_async = gdk_x11_drop_read_async;
|
||
drop_class->read_finish = gdk_x11_drop_read_finish;
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drop_init (GdkX11Drop *drag)
|
||
{
|
||
}
|
||
|