880 lines
31 KiB
C
880 lines
31 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2017 Red Hat, Inc.
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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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#include "config.h"
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#include "gdkclipboardprivate.h"
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#include "gdkclipboard-x11.h"
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#include <glib/gi18n-lib.h>
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#include "gdkdisplay-x11.h"
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#include "gdkprivate-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 "gdk/gdkprivate.h"
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#include <string.h>
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#include <X11/Xatom.h>
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#ifdef HAVE_XFIXES
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#include <X11/extensions/Xfixes.h>
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#endif
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#define IDLE_ABORT_TIME 30 /* seconds */
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typedef struct _GdkX11ClipboardClass GdkX11ClipboardClass;
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typedef struct _RetrievalInfo RetrievalInfo;
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struct _GdkX11Clipboard
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{
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GdkClipboard parent;
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char *selection;
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Atom xselection;
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gulong timestamp;
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GTask *store_task;
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};
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struct _GdkX11ClipboardClass
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{
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GdkClipboardClass parent_class;
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};
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G_DEFINE_TYPE (GdkX11Clipboard, gdk_x11_clipboard, GDK_TYPE_CLIPBOARD)
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static void
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print_atoms (GdkX11Clipboard *cb,
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const char *prefix,
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const Atom *atoms,
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gsize n_atoms)
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{
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GdkDisplay *display = gdk_clipboard_get_display (GDK_CLIPBOARD (cb));
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if (GDK_DISPLAY_DEBUG_CHECK (display, CLIPBOARD))
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{
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gsize i;
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GString *str;
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str = g_string_new ("");
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g_string_append_printf (str, "%s: %s [ ", cb->selection, prefix);
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for (i = 0; i < n_atoms; i++)
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g_string_append_printf (str, "%s%s", i > 0 ? ", " : "", gdk_x11_get_xatom_name_for_display (display , atoms[i]));
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g_string_append (str, " ]");
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gdk_debug_message ("%s", str->str);
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g_string_free (str, TRUE);
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}
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}
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static void
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gdk_x11_clipboard_default_output_closed (GObject *stream,
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GAsyncResult *result,
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gpointer user_data)
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{
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GError *error = NULL;
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if (!g_output_stream_close_finish (G_OUTPUT_STREAM (stream), result, &error))
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{
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GDK_DEBUG (CLIPBOARD, "-------: failed to close stream: %s", error->message);
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g_error_free (error);
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}
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g_object_unref (stream);
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}
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static void
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gdk_x11_clipboard_default_output_done (GObject *clipboard,
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GAsyncResult *result,
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gpointer user_data)
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{
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GOutputStream *stream = user_data;
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GError *error = NULL;
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if (!gdk_clipboard_write_finish (GDK_CLIPBOARD (clipboard), result, &error))
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{
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GDK_DISPLAY_DEBUG (gdk_clipboard_get_display (GDK_CLIPBOARD (clipboard)), CLIPBOARD,
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"%s: failed to write stream: %s",
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GDK_X11_CLIPBOARD (clipboard)->selection, error->message);
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g_error_free (error);
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}
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g_output_stream_close_async (stream,
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G_PRIORITY_DEFAULT,
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NULL,
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gdk_x11_clipboard_default_output_closed,
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NULL);
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}
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static void
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gdk_x11_clipboard_default_output_handler (GOutputStream *stream,
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const char *mime_type,
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gpointer user_data)
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{
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gdk_clipboard_write_async (GDK_CLIPBOARD (user_data),
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mime_type,
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stream,
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G_PRIORITY_DEFAULT,
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NULL,
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gdk_x11_clipboard_default_output_done,
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stream);
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}
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static GInputStream *
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text_list_convert (GdkX11Clipboard *cb,
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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 (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)),
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encoding,
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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 (GdkX11Clipboard *cb,
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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) (GdkX11Clipboard *, 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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GSList *
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gdk_x11_clipboard_formats_to_targets (GdkContentFormats *formats)
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{
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GSList *targets;
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const char * const *mime_types;
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gsize i, j, n_mime_types;
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targets = NULL;
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mime_types = gdk_content_formats_get_mime_types (formats, &n_mime_types);
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for (i = 0; i < n_mime_types; i++)
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{
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for (j = 0; j < G_N_ELEMENTS (special_targets); j++)
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{
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if (special_targets[j].mime_type == NULL)
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continue;
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if (g_str_equal (mime_types[i], special_targets[j].mime_type))
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targets = g_slist_prepend (targets, (gpointer) g_intern_static_string (special_targets[j].x_target));
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}
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targets = g_slist_prepend (targets, (gpointer) mime_types[i]);
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}
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return g_slist_reverse (targets);
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}
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Atom *
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gdk_x11_clipboard_formats_to_atoms (GdkDisplay *display,
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gboolean include_special,
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GdkContentFormats *formats,
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gsize *n_atoms)
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{
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GSList *l, *targets;
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Atom *atoms;
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gsize i;
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targets = gdk_x11_clipboard_formats_to_targets (formats);
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if (include_special)
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{
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for (i = 0; i < G_N_ELEMENTS (special_targets); i++)
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{
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if (special_targets[i].mime_type != NULL)
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continue;
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targets = g_slist_prepend (targets, (gpointer) g_intern_string (special_targets[i].x_target));
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}
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}
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*n_atoms = g_slist_length (targets);
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atoms = g_new (Atom, *n_atoms);
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i = 0;
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for (l = targets; l; l = l->next)
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atoms[i++] = gdk_x11_get_xatom_by_name_for_display (display, l->data);
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g_slist_free (targets);
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return atoms;
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}
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static GdkContentFormats *
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gdk_x11_clipboard_formats_from_atoms (GdkDisplay *display,
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const Atom *atoms,
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gsize n_atoms)
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{
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GdkContentFormatsBuilder *builder;
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gsize i, j;
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builder = gdk_content_formats_builder_new ();
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for (i = 0; i < n_atoms; i++)
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{
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const char *name;
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name = gdk_x11_get_xatom_name_for_display (display , atoms[i]);
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if (!name)
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{
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continue;
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}
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if (strchr (name, '/'))
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{
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gdk_content_formats_builder_add_mime_type (builder, name);
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continue;
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}
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for (j = 0; j < G_N_ELEMENTS (special_targets); j++)
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{
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if (g_str_equal (name, special_targets[j].x_target))
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{
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if (special_targets[j].mime_type)
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gdk_content_formats_builder_add_mime_type (builder, special_targets[j].mime_type);
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break;
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}
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}
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}
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return gdk_content_formats_builder_free_to_formats (builder);
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}
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static void
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gdk_x11_clipboard_request_targets_finish (GObject *source_object,
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GAsyncResult *res,
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gpointer user_data)
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{
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GInputStream *stream = G_INPUT_STREAM (source_object);
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GdkX11Clipboard *cb = user_data;
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GdkDisplay *display;
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GdkContentFormats *formats;
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GBytes *bytes;
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GError *error = NULL;
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display = gdk_clipboard_get_display (GDK_CLIPBOARD (cb));
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bytes = g_input_stream_read_bytes_finish (stream, res, &error);
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if (bytes == NULL)
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{
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GDK_DISPLAY_DEBUG (display, CLIPBOARD,
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"%s: error reading TARGETS: %s\n", cb->selection, error->message);
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g_error_free (error);
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g_object_unref (stream);
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g_object_unref (cb);
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return;
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}
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else if (g_bytes_get_size (bytes) == 0)
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{
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g_bytes_unref (bytes);
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g_object_unref (stream);
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g_object_unref (cb);
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return;
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}
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else if (gdk_clipboard_is_local (GDK_CLIPBOARD (cb)))
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{
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/* FIXME: Use a cancellable for this request, so that we don't do he brittle
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* is_local() check */
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g_bytes_unref (bytes);
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g_object_unref (stream);
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g_object_unref (cb);
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return;
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}
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print_atoms (cb,
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"received targets",
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g_bytes_get_data (bytes, NULL),
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g_bytes_get_size (bytes) / sizeof (Atom));
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formats = gdk_x11_clipboard_formats_from_atoms (display,
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g_bytes_get_data (bytes, NULL),
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g_bytes_get_size (bytes) / sizeof (Atom));
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if (GDK_DISPLAY_DEBUG_CHECK (display, CLIPBOARD))
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{
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char *s = gdk_content_formats_to_string (formats);
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gdk_debug_message ("%s: got formats: %s", cb->selection, s);
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g_free (s);
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}
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/* union with previously loaded formats */
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formats = gdk_content_formats_union (formats, gdk_clipboard_get_formats (GDK_CLIPBOARD (cb)));
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gdk_clipboard_claim_remote (GDK_CLIPBOARD (cb), formats);
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gdk_content_formats_unref (formats);
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g_bytes_unref (bytes);
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g_input_stream_read_bytes_async (stream,
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gdk_x11_display_get_max_request_size (display),
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G_PRIORITY_DEFAULT,
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NULL,
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gdk_x11_clipboard_request_targets_finish,
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cb);
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}
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static void
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gdk_x11_clipboard_request_targets_got_stream (GObject *source,
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GAsyncResult *result,
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gpointer data)
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{
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GdkX11Clipboard *cb = data;
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GInputStream *stream;
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GdkDisplay *display;
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GError *error = NULL;
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const char *type;
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int format;
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display = gdk_clipboard_get_display (GDK_CLIPBOARD (cb));
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stream = gdk_x11_selection_input_stream_new_finish (result, &type, &format, &error);
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if (stream == NULL)
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{
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GDK_DISPLAY_DEBUG(display, CLIPBOARD, "%s: can't request TARGETS: %s", cb->selection, error->message);
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g_object_unref (cb);
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g_error_free (error);
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return;
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}
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else if (g_strcmp0 (type, "ATOM") != 0 || format != 32)
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{
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GDK_DISPLAY_DEBUG (display, CLIPBOARD, "%s: Wrong reply type to TARGETS: type %s != ATOM or format %d != 32",
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cb->selection, type ? type : "NULL", format);
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g_input_stream_close (stream, NULL, NULL);
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g_object_unref (stream);
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g_object_unref (cb);
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return;
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}
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g_input_stream_read_bytes_async (stream,
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gdk_x11_display_get_max_request_size (display),
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G_PRIORITY_DEFAULT,
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NULL,
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gdk_x11_clipboard_request_targets_finish,
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cb);
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}
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static void
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gdk_x11_clipboard_request_targets (GdkX11Clipboard *cb)
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{
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gdk_x11_selection_input_stream_new_async (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)),
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cb->selection,
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"TARGETS",
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cb->timestamp,
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G_PRIORITY_DEFAULT,
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NULL,
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gdk_x11_clipboard_request_targets_got_stream,
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g_object_ref (cb));
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}
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static void
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gdk_x11_clipboard_claim_remote (GdkX11Clipboard *cb,
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guint32 timestamp)
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{
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GdkContentFormats *empty;
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empty = gdk_content_formats_new (NULL, 0);
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gdk_clipboard_claim_remote (GDK_CLIPBOARD (cb), empty);
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gdk_content_formats_unref (empty);
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cb->timestamp = timestamp;
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gdk_x11_clipboard_request_targets (cb);
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}
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static gboolean
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gdk_x11_clipboard_xevent (GdkDisplay *display,
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const XEvent *xevent,
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gpointer data)
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{
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GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (data);
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Window xwindow;
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xwindow = GDK_X11_DISPLAY (display)->leader_window;
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if (xevent->xany.window != xwindow)
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return FALSE;
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switch (xevent->type)
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{
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case SelectionClear:
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if (xevent->xselectionclear.selection != cb->xselection)
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return FALSE;
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if (xevent->xselectionclear.time < cb->timestamp)
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{
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GDK_DISPLAY_DEBUG (display, CLIPBOARD,
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"%s: ignoring SelectionClear with too old timestamp (%lu vs %lu)",
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cb->selection, xevent->xselectionclear.time, cb->timestamp);
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return FALSE;
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}
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GDK_DISPLAY_DEBUG (display, CLIPBOARD, "%s: got SelectionClear", cb->selection);
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gdk_x11_clipboard_claim_remote (cb, xevent->xselectionclear.time);
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return TRUE;
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case SelectionNotify:
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/* This code only checks clipboard manager replies, so... */
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if (!g_str_equal (cb->selection, "CLIPBOARD"))
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return FALSE;
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/* selection is not for us */
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if (xevent->xselection.selection != gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER") ||
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xevent->xselection.target != gdk_x11_get_xatom_by_name_for_display (display, "SAVE_TARGETS"))
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return FALSE;
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/* We already received a selectionNotify before */
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if (cb->store_task == NULL)
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{
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GDK_DISPLAY_DEBUG (display, CLIPBOARD,
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"%s: got SelectionNotify for nonexisting task?!", cb->selection);
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return FALSE;
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}
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GDK_DISPLAY_DEBUG (display, CLIPBOARD,
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"%s: got SelectionNotify for store task", cb->selection);
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if (xevent->xselection.property != None)
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g_task_return_boolean (cb->store_task, TRUE);
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else
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g_task_return_new_error (cb->store_task, G_IO_ERROR, G_IO_ERROR_FAILED,
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_("Clipboard manager could not store selection."));
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g_clear_object (&cb->store_task);
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return FALSE;
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case SelectionRequest:
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{
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const char *target, *property;
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if (xevent->xselectionrequest.selection != cb->xselection)
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return FALSE;
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target = gdk_x11_get_xatom_name_for_display (display, xevent->xselectionrequest.target);
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if (xevent->xselectionrequest.property == None)
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property = target;
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else
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property = gdk_x11_get_xatom_name_for_display (display, xevent->xselectionrequest.property);
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if (!gdk_clipboard_is_local (GDK_CLIPBOARD (cb)))
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{
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GDK_DISPLAY_DEBUG (display, CLIPBOARD,
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"%s: got SelectionRequest for %s @ %s even though we don't own the selection, huh?",
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cb->selection, target, property);
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return TRUE;
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}
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if (xevent->xselectionrequest.requestor == None)
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{
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GDK_DISPLAY_DEBUG (display, CLIPBOARD,
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"%s: got SelectionRequest for %s @ %s with NULL window, ignoring",
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cb->selection, target, property);
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return TRUE;
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}
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GDK_DISPLAY_DEBUG (display, CLIPBOARD,
|
|
"%s: got SelectionRequest for %s @ %s", cb->selection, target, property);
|
|
|
|
gdk_x11_selection_output_streams_create (display,
|
|
gdk_clipboard_get_formats (GDK_CLIPBOARD (cb)),
|
|
xevent->xselectionrequest.requestor,
|
|
xevent->xselectionrequest.selection,
|
|
xevent->xselectionrequest.target,
|
|
xevent->xselectionrequest.property ? xevent->xselectionrequest.property
|
|
: xevent->xselectionrequest.target,
|
|
xevent->xselectionrequest.time,
|
|
gdk_x11_clipboard_default_output_handler,
|
|
cb);
|
|
return TRUE;
|
|
}
|
|
|
|
default:
|
|
#ifdef HAVE_XFIXES
|
|
if (xevent->type - GDK_X11_DISPLAY (display)->xfixes_event_base == XFixesSelectionNotify)
|
|
{
|
|
XFixesSelectionNotifyEvent *sn = (XFixesSelectionNotifyEvent *) xevent;
|
|
|
|
if (sn->selection != cb->xselection)
|
|
return FALSE;
|
|
|
|
if (sn->selection_timestamp < cb->timestamp)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD,
|
|
"%s: Ignoring XFixesSelectionNotify with too old timestamp (%lu vs %lu)",
|
|
cb->selection, sn->selection_timestamp, cb->timestamp);
|
|
return FALSE;
|
|
}
|
|
|
|
if (sn->owner == GDK_X11_DISPLAY (display)->leader_window)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD,
|
|
"%s: Ignoring XFixesSelectionNotify for ourselves", cb->selection);
|
|
return FALSE;
|
|
}
|
|
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD,
|
|
"%s: Received XFixesSelectionNotify, claiming selection", cb->selection);
|
|
|
|
gdk_x11_clipboard_claim_remote (cb, sn->selection_timestamp);
|
|
}
|
|
#endif
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_x11_clipboard_finalize (GObject *object)
|
|
{
|
|
GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (object);
|
|
|
|
g_signal_handlers_disconnect_by_func (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)),
|
|
gdk_x11_clipboard_xevent,
|
|
cb);
|
|
g_free (cb->selection);
|
|
|
|
G_OBJECT_CLASS (gdk_x11_clipboard_parent_class)->finalize (object);
|
|
}
|
|
|
|
static gboolean
|
|
gdk_x11_clipboard_claim (GdkClipboard *clipboard,
|
|
GdkContentFormats *formats,
|
|
gboolean local,
|
|
GdkContentProvider *content)
|
|
{
|
|
if (local)
|
|
{
|
|
GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (clipboard);
|
|
GdkDisplay *display = gdk_clipboard_get_display (GDK_CLIPBOARD (cb));
|
|
Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
|
|
Window xwindow = GDK_X11_DISPLAY (display)->leader_window;
|
|
guint32 time;
|
|
|
|
time = gdk_x11_get_server_time (GDK_X11_DISPLAY (display)->leader_gdk_surface);
|
|
|
|
if (content)
|
|
{
|
|
XSetSelectionOwner (xdisplay, cb->xselection, xwindow, time);
|
|
|
|
if (XGetSelectionOwner (xdisplay, cb->xselection) != xwindow)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD, "%s: failed XSetSelectionOwner()", cb->selection);
|
|
return FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
XSetSelectionOwner (xdisplay, cb->xselection, None, time);
|
|
}
|
|
|
|
cb->timestamp = time;
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD, "%s: claimed via XSetSelectionOwner()", cb->selection);
|
|
}
|
|
|
|
return GDK_CLIPBOARD_CLASS (gdk_x11_clipboard_parent_class)->claim (clipboard, formats, local, content);
|
|
}
|
|
|
|
static void
|
|
gdk_x11_clipboard_store_async (GdkClipboard *clipboard,
|
|
int io_priority,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (clipboard);
|
|
GdkDisplay *display = gdk_clipboard_get_display (clipboard);
|
|
Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
|
|
Atom clipboard_manager, save_targets, property_name;
|
|
GdkContentProvider *content;
|
|
GdkContentFormats *formats;
|
|
Atom *atoms;
|
|
gsize n_atoms;
|
|
int error;
|
|
|
|
/* clipboard managers don't work on anything but the clipbpoard selection */
|
|
if (!g_str_equal (cb->selection, "CLIPBOARD"))
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD, "%s: can only store on CLIPBOARD", cb->selection);
|
|
GDK_CLIPBOARD_CLASS (gdk_x11_clipboard_parent_class)->store_async (clipboard,
|
|
io_priority,
|
|
cancellable,
|
|
callback,
|
|
user_data);
|
|
return;
|
|
}
|
|
|
|
cb->store_task = g_task_new (clipboard, cancellable, callback, user_data);
|
|
g_task_set_priority (cb->store_task, io_priority);
|
|
g_task_set_source_tag (cb->store_task, gdk_x11_clipboard_store_async);
|
|
|
|
clipboard_manager = gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER");
|
|
save_targets = gdk_x11_get_xatom_by_name_for_display (display, "SAVE_TARGETS");
|
|
|
|
if (XGetSelectionOwner (xdisplay, clipboard_manager) == None)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD,
|
|
"%s: XGetSelectionOwner (CLIPBOARD_MANAGER) returned None, aborting.",
|
|
cb->selection);
|
|
g_task_return_new_error (cb->store_task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
|
|
_("Cannot store clipboard. No clipboard manager is active."));
|
|
g_clear_object (&cb->store_task);
|
|
return;
|
|
}
|
|
|
|
content = gdk_clipboard_get_content (clipboard);
|
|
if (content == NULL)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD, "%s: storing empty clipboard: SUCCESS!", cb->selection);
|
|
g_task_return_boolean (cb->store_task, TRUE);
|
|
g_clear_object (&cb->store_task);
|
|
return;
|
|
}
|
|
|
|
formats = gdk_content_provider_ref_storable_formats (content);
|
|
formats = gdk_content_formats_union_serialize_mime_types (formats);
|
|
atoms = gdk_x11_clipboard_formats_to_atoms (display, FALSE, formats, &n_atoms);
|
|
print_atoms (cb, "requesting store from clipboard manager", atoms, n_atoms);
|
|
gdk_content_formats_unref (formats);
|
|
|
|
gdk_x11_display_error_trap_push (display);
|
|
|
|
if (n_atoms > 0)
|
|
{
|
|
property_name = gdk_x11_get_xatom_by_name_for_display (display, "GDK_CLIPBOARD_SAVE_TARGETS");
|
|
|
|
XChangeProperty (xdisplay, GDK_X11_DISPLAY (display)->leader_window,
|
|
property_name, XA_ATOM,
|
|
32, PropModeReplace, (guchar *)atoms, n_atoms);
|
|
}
|
|
else
|
|
property_name = None;
|
|
|
|
XConvertSelection (xdisplay,
|
|
clipboard_manager, save_targets, property_name,
|
|
GDK_X11_DISPLAY (display)->leader_window, cb->timestamp);
|
|
|
|
error = gdk_x11_display_error_trap_pop (display);
|
|
if (error != Success)
|
|
{
|
|
GDK_DISPLAY_DEBUG (display, CLIPBOARD,
|
|
"%s: X error during ConvertSelection() while storing selection: %d", cb->selection, error);
|
|
}
|
|
|
|
g_free (atoms);
|
|
}
|
|
|
|
static gboolean
|
|
gdk_x11_clipboard_store_finish (GdkClipboard *clipboard,
|
|
GAsyncResult *result,
|
|
GError **error)
|
|
{
|
|
g_return_val_if_fail (g_task_is_valid (result, clipboard), FALSE);
|
|
g_return_val_if_fail (g_task_get_source_tag (G_TASK (result)) == gdk_x11_clipboard_store_async, FALSE);
|
|
|
|
return g_task_propagate_boolean (G_TASK (result), error);
|
|
}
|
|
|
|
static void
|
|
gdk_x11_clipboard_read_got_stream (GObject *source,
|
|
GAsyncResult *res,
|
|
gpointer data)
|
|
{
|
|
GTask *task = data;
|
|
GError *error = NULL;
|
|
GInputStream *stream;
|
|
const char *type;
|
|
int format;
|
|
|
|
stream = gdk_x11_selection_input_stream_new_finish (res, &type, &format, &error);
|
|
if (stream == NULL)
|
|
{
|
|
GSList *targets, *next;
|
|
|
|
targets = g_task_get_task_data (task);
|
|
next = targets->next;
|
|
if (next)
|
|
{
|
|
GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (g_task_get_source_object (task));
|
|
|
|
GDK_DISPLAY_DEBUG (gdk_clipboard_get_display (GDK_CLIPBOARD(cb)), CLIPBOARD,
|
|
"%s: reading %s failed, trying %s next\n",
|
|
cb->selection, (char *) targets->data, (char *) next->data);
|
|
targets->next = NULL;
|
|
g_task_set_task_data (task, next, (GDestroyNotify) g_slist_free);
|
|
gdk_x11_selection_input_stream_new_async (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)),
|
|
cb->selection,
|
|
next->data,
|
|
cb->timestamp,
|
|
g_task_get_priority (task),
|
|
g_task_get_cancellable (task),
|
|
gdk_x11_clipboard_read_got_stream,
|
|
task);
|
|
g_error_free (error);
|
|
return;
|
|
}
|
|
|
|
g_task_return_error (task, error);
|
|
}
|
|
else
|
|
{
|
|
GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (g_task_get_source_object (task));
|
|
const char *mime_type = ((GSList *) g_task_get_task_data (task))->data;
|
|
gsize i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (special_targets); i++)
|
|
{
|
|
if (g_str_equal (mime_type, special_targets[i].x_target))
|
|
{
|
|
g_assert (special_targets[i].mime_type != NULL);
|
|
|
|
GDK_DISPLAY_DEBUG (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)), CLIPBOARD,
|
|
"%s: reading with converter from %s to %s",
|
|
cb->selection, mime_type, special_targets[i].mime_type);
|
|
mime_type = g_intern_string (special_targets[i].mime_type);
|
|
g_task_set_task_data (task, g_slist_prepend (NULL, (gpointer) mime_type), (GDestroyNotify) g_slist_free);
|
|
stream = special_targets[i].convert (cb, stream, type, format);
|
|
break;
|
|
}
|
|
}
|
|
|
|
GDK_DISPLAY_DEBUG (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)), CLIPBOARD,
|
|
"%s: reading clipboard as %s now", cb->selection, mime_type);
|
|
g_task_return_pointer (task, stream, g_object_unref);
|
|
}
|
|
|
|
g_object_unref (task);
|
|
}
|
|
|
|
static void
|
|
gdk_x11_clipboard_read_async (GdkClipboard *clipboard,
|
|
GdkContentFormats *formats,
|
|
int io_priority,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (clipboard);
|
|
GSList *targets;
|
|
GTask *task;
|
|
|
|
task = g_task_new (clipboard, cancellable, callback, user_data);
|
|
g_task_set_priority (task, io_priority);
|
|
g_task_set_source_tag (task, gdk_x11_clipboard_read_async);
|
|
|
|
targets = gdk_x11_clipboard_formats_to_targets (formats);
|
|
g_task_set_task_data (task, targets, (GDestroyNotify) g_slist_free);
|
|
if (targets == NULL)
|
|
{
|
|
g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
|
|
_("No compatible transfer format found"));
|
|
return;
|
|
}
|
|
|
|
GDK_DISPLAY_DEBUG (gdk_clipboard_get_display (clipboard), CLIPBOARD,
|
|
"%s: new read for %s (%u other options)",
|
|
cb->selection, (char *) targets->data, g_slist_length (targets->next));
|
|
gdk_x11_selection_input_stream_new_async (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)),
|
|
cb->selection,
|
|
targets->data,
|
|
cb->timestamp,
|
|
io_priority,
|
|
cancellable,
|
|
gdk_x11_clipboard_read_got_stream,
|
|
task);
|
|
}
|
|
|
|
static GInputStream *
|
|
gdk_x11_clipboard_read_finish (GdkClipboard *clipboard,
|
|
GAsyncResult *result,
|
|
const char **out_mime_type,
|
|
GError **error)
|
|
{
|
|
GTask *task;
|
|
|
|
g_return_val_if_fail (g_task_is_valid (result, G_OBJECT (clipboard)), NULL);
|
|
task = G_TASK (result);
|
|
g_return_val_if_fail (g_task_get_source_tag (task) == gdk_x11_clipboard_read_async, NULL);
|
|
|
|
if (out_mime_type)
|
|
{
|
|
GSList *targets;
|
|
|
|
targets = g_task_get_task_data (task);
|
|
*out_mime_type = targets ? targets->data : NULL;
|
|
}
|
|
|
|
return g_task_propagate_pointer (task, error);
|
|
}
|
|
|
|
static void
|
|
gdk_x11_clipboard_class_init (GdkX11ClipboardClass *class)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
|
GdkClipboardClass *clipboard_class = GDK_CLIPBOARD_CLASS (class);
|
|
|
|
object_class->finalize = gdk_x11_clipboard_finalize;
|
|
|
|
clipboard_class->claim = gdk_x11_clipboard_claim;
|
|
clipboard_class->store_async = gdk_x11_clipboard_store_async;
|
|
clipboard_class->store_finish = gdk_x11_clipboard_store_finish;
|
|
clipboard_class->read_async = gdk_x11_clipboard_read_async;
|
|
clipboard_class->read_finish = gdk_x11_clipboard_read_finish;
|
|
}
|
|
|
|
static void
|
|
gdk_x11_clipboard_init (GdkX11Clipboard *cb)
|
|
{
|
|
cb->timestamp = CurrentTime;
|
|
}
|
|
|
|
GdkClipboard *
|
|
gdk_x11_clipboard_new (GdkDisplay *display,
|
|
const char *selection)
|
|
{
|
|
GdkX11Clipboard *cb;
|
|
|
|
cb = g_object_new (GDK_TYPE_X11_CLIPBOARD,
|
|
"display", display,
|
|
NULL);
|
|
|
|
cb->selection = g_strdup (selection);
|
|
cb->xselection = gdk_x11_get_xatom_by_name_for_display (display, selection);
|
|
|
|
gdk_x11_display_request_selection_notification (display, selection);
|
|
g_signal_connect (display, "xevent", G_CALLBACK (gdk_x11_clipboard_xevent), cb);
|
|
gdk_x11_clipboard_claim_remote (cb, CurrentTime);
|
|
|
|
return GDK_CLIPBOARD (cb);
|
|
}
|
|
|