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x11: Implement claiming the X Selection with the clipboard

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... and of course support writing to other apps.
This commit is contained in:
Benjamin Otte 2017-11-25 21:59:39 +01:00
parent e2014850b9
commit 134076e738
12 changed files with 1285 additions and 73 deletions
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3
docs/reference/gdk/gdk4-sections.txt
View File

@ -367,6 +367,9 @@ gdk_fullscreen_mode_get_type
<SECTION>
<FILE>gdkcontentformats</FILE>
<TITLE>Content Formats</TITLE>
gdk_intern_mime_type
<SUBSECTION>
GdkContentFormats
gdk_content_formats_new
gdk_content_formats_ref

33
gdk/gdkcontentformats.c
View File

@ -63,7 +63,7 @@
#include "gdkcontentformats.h"
#include "gdkcontentformatsprivate.h"
#include "gdkproperty.h"
#include <string.h>
struct _GdkContentFormats
{
@ -81,6 +81,37 @@ G_DEFINE_BOXED_TYPE (GdkContentFormats, gdk_content_formats,
gdk_content_formats_unref)
/**
* gdk_intern_mime_type:
* @string: (transfer none): string of a potential mime type
*
* Canonicalizes the given mime type and interns the result.
*
* If @string is not a valid mime type, %NULL is returned instead.
* See RFC 2048 for the syntax if mime types.
*
* Returns: An interned string for the canonicalized mime type
* or %NULL if the string wasn't a valid mime type
**/
const char *
gdk_intern_mime_type (const char *string)
{
char *tmp;
g_return_val_if_fail (string != NULL, NULL);
if (!strchr (string, '/'))
return NULL;
tmp = g_ascii_strdown (string, -1);
string = g_intern_string (tmp);
g_free (tmp);
return string;
}
static GdkContentFormats *
gdk_content_formats_new_take (GType * gtypes,
gsize n_gtypes,

3
gdk/gdkcontentformats.h
View File

@ -30,6 +30,9 @@ G_BEGIN_DECLS
#define GDK_TYPE_CONTENT_FORMATS (gdk_content_formats_get_type ())
GDK_AVAILABLE_IN_3_94
const char * gdk_intern_mime_type (const char *string);
GDK_AVAILABLE_IN_3_94
GType gdk_content_formats_get_type (void) G_GNUC_CONST;
GDK_AVAILABLE_IN_3_94

451
gdk/x11/gdkclipboard-x11.c
View File

@ -23,7 +23,9 @@
#include "gdkintl.h"
#include "gdkprivate-x11.h"
#include "gdkselectioninputstream-x11.h"
#include "gdkselectionoutputstream-x11.h"
#include "gdktextlistconverter-x11.h"
#include "gdk/gdk-private.h"
#include <string.h>
#include <X11/Xatom.h>
@ -44,7 +46,7 @@ struct _GdkX11Clipboard
char *selection;
Atom xselection;
guint32 timestamp;
gulong timestamp;
};
struct _GdkX11ClipboardClass
@ -54,6 +56,144 @@ struct _GdkX11ClipboardClass
G_DEFINE_TYPE (GdkX11Clipboard, gdk_x11_clipboard, GDK_TYPE_CLIPBOARD)
static void
print_atoms (GdkX11Clipboard *cb,
const char *prefix,
const Atom *atoms,
gsize n_atoms)
{
GDK_NOTE(CLIPBOARD,
GdkDisplay *display = gdk_clipboard_get_display (GDK_CLIPBOARD (cb));
gsize i;
g_printerr ("%s: %s [ ", cb->selection, prefix);
for (i = 0; i < n_atoms; i++)
{
g_printerr ("%s%s", i > 0 ? ", " : "", gdk_x11_get_xatom_name_for_display (display , atoms[i]));
}
g_printerr (" ]\n");
);
}
static void
gdk_x11_clipboard_default_output_done (GObject *clipboard,
GAsyncResult *result,
gpointer user_data)
{
GError *error = NULL;
if (!gdk_clipboard_write_finish (GDK_CLIPBOARD (clipboard), result, &error))
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: failed to write stream: %s\n", GDK_X11_CLIPBOARD (clipboard)->selection, error->message));
g_error_free (error);
}
}
static void
gdk_x11_clipboard_default_output_handler (GdkX11Clipboard *cb,
const char *target,
const char *encoding,
int format,
GOutputStream *stream)
{
gdk_clipboard_write_async (GDK_CLIPBOARD (cb),
g_intern_string (target),
stream,
G_PRIORITY_DEFAULT,
NULL,
gdk_x11_clipboard_default_output_done,
NULL);
g_object_unref (stream);
}
static void
handle_targets_done (GObject *stream,
GAsyncResult *result,
gpointer user_data)
{
GError *error = NULL;
gsize bytes_written;
if (!g_output_stream_write_all_finish (G_OUTPUT_STREAM (stream), result, &bytes_written, &error))
{
GDK_NOTE(CLIPBOARD, g_printerr ("---: failed to send targets after %zu bytes: %s\n",
bytes_written, error->message));
g_error_free (error);
}
g_free (user_data);
}
static Atom *
gdk_x11_clipboard_formats_to_atoms (GdkDisplay *display,
GdkContentFormats *formats,
gsize *n_atoms);
static void
handle_targets (GdkX11Clipboard *cb,
const char *target,
const char *encoding,
int format,
GOutputStream *stream)
{
GdkClipboard *clipboard = GDK_CLIPBOARD (cb);
Atom *atoms;
gsize n_atoms;
atoms = gdk_x11_clipboard_formats_to_atoms (gdk_clipboard_get_display (clipboard),
gdk_clipboard_get_formats (clipboard),
&n_atoms);
print_atoms (cb, "sending targets", atoms, n_atoms);
g_output_stream_write_all_async (stream,
atoms,
n_atoms * sizeof (Atom),
G_PRIORITY_DEFAULT,
NULL,
handle_targets_done,
atoms);
g_object_unref (stream);
}
static void
handle_timestamp_done (GObject *stream,
GAsyncResult *result,
gpointer user_data)
{
GError *error = NULL;
gsize bytes_written;
if (!g_output_stream_write_all_finish (G_OUTPUT_STREAM (stream), result, &bytes_written, &error))
{
GDK_NOTE(CLIPBOARD, g_printerr ("---: failed to send timestamp after %zu bytes: %s\n",
bytes_written, error->message));
g_error_free (error);
}
g_slice_free (gulong, user_data);
}
static void
handle_timestamp (GdkX11Clipboard *cb,
const char *target,
const char *encoding,
int format,
GOutputStream *stream)
{
gulong *timestamp;
timestamp = g_slice_new (gulong);
*timestamp = cb->timestamp;
g_output_stream_write_all_async (stream,
timestamp,
sizeof (gulong),
G_PRIORITY_DEFAULT,
NULL,
handle_timestamp_done,
timestamp);
g_object_unref (stream);
}
static GInputStream *
text_list_convert (GdkX11Clipboard *cb,
GInputStream *stream,
@ -74,6 +214,37 @@ text_list_convert (GdkX11Clipboard *cb,
return converter_stream;
}
static void
handle_text_list (GdkX11Clipboard *cb,
const char *target,
const char *encoding,
int format,
GOutputStream *stream)
{
GOutputStream *converter_stream;
GConverter *converter;
converter = gdk_x11_text_list_converter_to_utf8_new (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)),
encoding,
format);
converter_stream = g_converter_output_stream_new (stream, converter);
g_object_unref (converter);
g_object_unref (stream);
gdk_x11_clipboard_default_output_handler (cb, "text/plain;charset=utf-8", encoding, format, converter_stream);
}
static void
handle_utf8 (GdkX11Clipboard *cb,
const char *target,
const char *encoding,
int format,
GOutputStream *stream)
{
gdk_x11_clipboard_default_output_handler (cb, "text/plain;charset=utf-8", encoding, format, stream);
}
static GInputStream *
no_convert (GdkX11Clipboard *cb,
GInputStream *stream,
@ -83,36 +254,24 @@ no_convert (GdkX11Clipboard *cb,
return stream;
}
typedef void (* MimeTypeHandleFunc) (GdkX11Clipboard *, const char *, const char *, int, GOutputStream *);
static const struct {
const char *x_target;
const char *mime_type;
GInputStream * (* convert) (GdkX11Clipboard *, GInputStream *, const char *, int);
const char *type;
gint format;
MimeTypeHandleFunc handler;
} special_targets[] = {
{ "UTF8_STRING", "text/plain;charset=utf-8", no_convert },
{ "COMPOUND_TEXT", "text/plain;charset=utf-8", text_list_convert },
{ "TEXT", "text/plain;charset=utf-8", text_list_convert },
{ "STRING", "text/plain;charset=utf-8", text_list_convert }
{ "UTF8_STRING", "text/plain;charset=utf-8", no_convert, "UTF8_STRING", 8, handle_utf8 },
{ "COMPOUND_TEXT", "text/plain;charset=utf-8", text_list_convert, "COMPOUND_TEXT", 8, handle_text_list },
{ "TEXT", "text/plain;charset=utf-8", text_list_convert, "STRING", 8, handle_text_list },
{ "STRING", "text/plain;charset=utf-8", text_list_convert, "STRING", 8, handle_text_list },
{ "TARGETS", NULL, NULL, "ATOM", 32, handle_targets },
{ "TIMESTAMP", NULL, NULL, "INTEGER", 32, handle_timestamp }
};
static void
print_atoms (GdkX11Clipboard *cb,
const char *prefix,
const Atom *atoms,
gsize n_atoms)
{
GDK_NOTE(CLIPBOARD,
GdkDisplay *display = gdk_clipboard_get_display (GDK_CLIPBOARD (cb));
gsize i;
g_printerr ("%s: %s [ ", cb->selection, prefix);
for (i = 0; i < n_atoms; i++)
{
g_printerr ("%s%s", i > 0 ? ", " : "", gdk_x11_get_xatom_name_for_display (display , atoms[i]));
}
g_printerr (" ]\n");
);
}
static GSList *
gdk_x11_clipboard_formats_to_targets (GdkContentFormats *formats)
{
@ -127,8 +286,11 @@ gdk_x11_clipboard_formats_to_targets (GdkContentFormats *formats)
{
for (j = 0; j < G_N_ELEMENTS (special_targets); j++)
{
if (special_targets[j].mime_type == NULL)
continue;
if (g_str_equal (mime_types[i], special_targets[j].mime_type))
targets = g_slist_prepend (targets, (gpointer) g_intern_string (special_targets[i].x_target));
targets = g_slist_prepend (targets, (gpointer) g_intern_string (special_targets[j].x_target));
}
targets = g_slist_prepend (targets, (gpointer) mime_types[i]);
}
@ -136,6 +298,35 @@ gdk_x11_clipboard_formats_to_targets (GdkContentFormats *formats)
return g_slist_reverse (targets);
}
static Atom *
gdk_x11_clipboard_formats_to_atoms (GdkDisplay *display,
GdkContentFormats *formats,
gsize *n_atoms)
{
GSList *l, *targets;
Atom *atoms;
gsize i;
targets = gdk_x11_clipboard_formats_to_targets (formats);
for (i = 0; i < G_N_ELEMENTS (special_targets); i++)
{
if (special_targets[i].mime_type != NULL)
continue;
if (special_targets[i].handler)
targets = g_slist_prepend (targets, (gpointer) g_intern_string (special_targets[i].x_target));
}
*n_atoms = g_slist_length (targets);
atoms = g_new (Atom, *n_atoms);
i = 0;
for (l = targets; l; l = l->next)
atoms[i++] = gdk_x11_get_xatom_by_name_for_display (display, l->data);
return atoms;
}
static GdkContentFormats *
gdk_x11_clipboard_formats_from_atoms (GdkDisplay *display,
const Atom *atoms,
@ -160,7 +351,8 @@ gdk_x11_clipboard_formats_from_atoms (GdkDisplay *display,
{
if (g_str_equal (name, special_targets[j].x_target))
{
gdk_content_formats_builder_add_mime_type (builder, special_targets[j].mime_type);
if (special_targets[j].mime_type)
gdk_content_formats_builder_add_mime_type (builder, special_targets[j].mime_type);
break;
}
}
@ -184,6 +376,7 @@ gdk_x11_clipboard_request_targets_finish (GObject *source_object,
bytes = g_input_stream_read_bytes_finish (stream, res, &error);
if (bytes == NULL)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: error reading TARGETS: %s\n", cb->selection, error->message));
g_error_free (error);
g_object_unref (stream);
g_object_unref (cb);
@ -235,11 +428,15 @@ gdk_x11_clipboard_request_targets_got_stream (GObject *source,
stream = gdk_x11_selection_input_stream_new_finish (result, &type, &format, &error);
if (stream == NULL)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: can't request TARGETS: %s\n", cb->selection, error->message));
g_object_unref (cb);
g_error_free (error);
return;
}
else if (!g_str_equal (type, "ATOM") || format != 32)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: Wrong reply type to TARGETS: type %s != ATOM or format %d != 32\n",
cb->selection, type, format));
g_input_stream_close (stream, NULL, NULL);
g_object_unref (stream);
g_object_unref (cb);
@ -269,6 +466,19 @@ gdk_x11_clipboard_request_targets (GdkX11Clipboard *cb)
g_object_ref (cb));
}
static void
gdk_x11_clipboard_claim_remote (GdkX11Clipboard *cb,
guint32 timestamp)
{
GdkContentFormats *empty;
empty = gdk_content_formats_new (NULL, 0);
gdk_clipboard_claim_remote (GDK_CLIPBOARD (cb), empty);
gdk_content_formats_unref (empty);
cb->timestamp = timestamp;
gdk_x11_clipboard_request_targets (cb);
}
static GdkFilterReturn
gdk_x11_clipboard_filter_event (GdkXEvent *xev,
GdkEvent *gdkevent,
@ -287,23 +497,147 @@ gdk_x11_clipboard_filter_event (GdkXEvent *xev,
switch (xevent->type)
{
case SelectionClear:
if (xevent->xselectionclear.selection != cb->xselection)
return GDK_FILTER_CONTINUE;
if (xevent->xselectionclear.time < cb->timestamp)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: ignoring SelectionClear with too old timestamp (%lu vs %lu)\n",
cb->selection, xevent->xselectionclear.time, cb->timestamp));
return GDK_FILTER_CONTINUE;
}
GDK_NOTE(CLIPBOARD, g_printerr ("%s: got SelectionClear\n", cb->selection));
gdk_x11_clipboard_claim_remote (cb, xevent->xselectionclear.time);
return GDK_FILTER_REMOVE;
case SelectionRequest:
{
GOutputStream *stream;
const char *target, *property, *type, *mime_type;
MimeTypeHandleFunc handler_func = NULL;
gint format;
gsize i;
if (xevent->xselectionrequest.selection != cb->xselection)
return GDK_FILTER_CONTINUE;
target = gdk_x11_get_xatom_name_for_display (display, xevent->xselectionrequest.target);
if (xevent->xselectionrequest.property == None)
property = target;
else
property = gdk_x11_get_xatom_name_for_display (display, xevent->xselectionrequest.property);
if (!gdk_clipboard_is_local (GDK_CLIPBOARD (cb)))
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: got SelectionRequest for %s @ %s even though we don't own the selection, huh?\n",
cb->selection, target, property));
return GDK_FILTER_REMOVE;
}
if (xevent->xselectionrequest.requestor == None)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: got SelectionRequest for %s @ %s with NULL window, ignoring\n",
cb->selection, target, property));
return GDK_FILTER_REMOVE;
}
GDK_NOTE(CLIPBOARD, g_printerr ("%s: got SelectionRequest for %s @ %s\n",
cb->selection, target, property));
mime_type = gdk_intern_mime_type (target);
if (mime_type)
{
handler_func = gdk_x11_clipboard_default_output_handler;
type = target;
format = 8;
}
else
{
for (i = 0; i < G_N_ELEMENTS (special_targets); i++)
{
if (g_str_equal (target, special_targets[i].x_target) &&
special_targets[i].handler)
{
if (special_targets[i].mime_type)
mime_type = gdk_intern_mime_type (special_targets[i].mime_type);
handler_func = special_targets[i].handler;
type = special_targets[i].type;
format = special_targets[i].format;
break;
}
}
}
if (handler_func == NULL ||
(mime_type && !gdk_content_formats_contain_mime_type (gdk_clipboard_get_formats (GDK_CLIPBOARD (cb)), mime_type)))
{
Display *xdisplay = gdk_x11_display_get_xdisplay (display);
XSelectionEvent xreply;
int error;
xreply.type = SelectionNotify;
xreply.serial = 0;
xreply.send_event = True;
xreply.requestor = xevent->xselectionrequest.requestor,
xreply.selection = xevent->xselectionrequest.selection;
xreply.target = xevent->xselectionrequest.target;
xreply.property = None;
xreply.time = xevent->xselectionrequest.time;
GDK_NOTE(CLIPBOARD, g_printerr ("%s%s: Sending SelectionNotify rejecting request\n",
cb->selection, target));
gdk_x11_display_error_trap_push (display);
if (XSendEvent (xdisplay, xreply.requestor, False, NoEventMask, (XEvent*) & xreply) == 0)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s:%s: failed to XSendEvent()\n",
cb->selection, target));
g_warning ("failed to XSendEvent()");
}
XSync (xdisplay, False);
error = gdk_x11_display_error_trap_pop (display);
if (error != Success)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s:%s: X error during write: %d\n",
cb->selection, target, error));
}
}
else
{
stream = gdk_x11_selection_output_stream_new (display,
xevent->xselectionrequest.requestor,
cb->selection,
target,
property,
type,
format,
xevent->xselectionrequest.time);
handler_func (cb, target, type, format, stream);
}
return GDK_FILTER_REMOVE;
}
default:
#ifdef HAVE_XFIXES
if (xevent->type - GDK_X11_DISPLAY (display)->xfixes_event_base == XFixesSelectionNotify)
{
XFixesSelectionNotifyEvent *sn = (XFixesSelectionNotifyEvent *) xevent;
{
XFixesSelectionNotifyEvent *sn = (XFixesSelectionNotifyEvent *) xevent;
if (sn->selection == cb->xselection)
if (sn->selection != cb->xselection)
return GDK_FILTER_CONTINUE;
if (sn->owner == GDK_X11_DISPLAY (display)->leader_window)
{
GdkContentFormats *empty;
GDK_NOTE(CLIPBOARD, g_printerr ("%s: got FixesSelectionNotify\n", cb->selection));
empty = gdk_content_formats_new (NULL, 0);
gdk_clipboard_claim_remote (GDK_CLIPBOARD (cb), empty);
gdk_content_formats_unref (empty);
cb->timestamp = sn->selection_timestamp;
gdk_x11_clipboard_request_targets (cb);
GDK_NOTE(CLIPBOARD, g_printerr ("%s: Ignoring XFixesSelectionNotify for ourselves\n",
cb->selection));
return GDK_FILTER_CONTINUE;
}
GDK_NOTE(CLIPBOARD, g_printerr ("%s: Received XFixesSelectionNotify, claiming selection\n",
cb->selection));
gdk_x11_clipboard_claim_remote (cb, sn->selection_timestamp);
}
#endif
return GDK_FILTER_CONTINUE;
@ -321,6 +655,44 @@ gdk_x11_clipboard_finalize (GObject *object)
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_display_get_last_seen_time (display);
if (content)
{
XSetSelectionOwner (xdisplay, cb->xselection, xwindow, time);
if (XGetSelectionOwner (xdisplay, cb->xselection) != xwindow)
{
GDK_NOTE(CLIPBOARD, g_printerr ("%s: failed XSetSelectionOwner()\n", cb->selection));
return FALSE;
}
}
else
{
XSetSelectionOwner (xdisplay, cb->xselection, None, time);
}
cb->timestamp = time;
GDK_NOTE(CLIPBOARD, g_printerr ("%s: claimed via XSetSelectionOwner()\n", cb->selection));
}
return GDK_CLIPBOARD_CLASS (gdk_x11_clipboard_parent_class)->claim (clipboard, formats, local, content);
}
static void
gdk_x11_clipboard_read_got_stream (GObject *source,
GAsyncResult *res,
@ -371,6 +743,8 @@ gdk_x11_clipboard_read_got_stream (GObject *source,
{
if (g_str_equal (mime_type, special_targets[i].x_target))
{
g_assert (special_targets[i].mime_type != NULL);
GDK_NOTE(CLIPBOARD, g_printerr ("%s: reading with converter from %s to %s\n",
cb->selection, mime_type, special_targets[i].mime_type));
mime_type = g_intern_string (special_targets[i].mime_type);
@ -468,6 +842,7 @@ gdk_x11_clipboard_class_init (GdkX11ClipboardClass *class)
object_class->finalize = gdk_x11_clipboard_finalize;
clipboard_class->claim = gdk_x11_clipboard_claim;
clipboard_class->read_async = gdk_x11_clipboard_read_async;
clipboard_class->read_finish = gdk_x11_clipboard_read_finish;
}
@ -493,7 +868,7 @@ gdk_x11_clipboard_new (GdkDisplay *display,
gdk_display_request_selection_notification (display, gdk_atom_intern (selection, FALSE));
gdk_window_add_filter (NULL, gdk_x11_clipboard_filter_event, cb);
gdk_x11_clipboard_request_targets (cb);
gdk_x11_clipboard_claim_remote (cb, CurrentTime);
return GDK_CLIPBOARD (cb);
}

2
gdk/x11/gdkdisplay-x11.c
View File

@ -2054,7 +2054,7 @@ gdk_x11_display_finalize (GObject *object)
_gdk_x11_display_free_translate_queue (GDK_DISPLAY (display_x11));
/* Get rid of pending streams */
g_slist_free_full (display_x11->input_streams, g_object_unref);
g_slist_free_full (display_x11->streams, g_object_unref);
/* Atom Hashtable */
g_hash_table_destroy (display_x11->atom_from_virtual);

2
gdk/x11/gdkdisplay-x11.h
View File

@ -107,7 +107,7 @@ struct _GdkX11Display
GQueue *translate_queue;
/* streams reading selections */
GSList *input_streams;
GSList *streams;
/* input GdkWindow list */
GList *input_windows;

4
gdk/x11/gdkselectioninputstream-x11.c
View File

@ -160,7 +160,7 @@ gdk_x11_selection_input_stream_complete (GdkX11SelectionInputStream *stream)
g_async_queue_push (priv->chunks, g_bytes_new (NULL, 0));
gdk_x11_selection_input_stream_flush (stream);
GDK_X11_DISPLAY (priv->display)->input_streams = g_slist_remove (GDK_X11_DISPLAY (priv->display)->input_streams, stream);
GDK_X11_DISPLAY (priv->display)->streams = g_slist_remove (GDK_X11_DISPLAY (priv->display)->streams, stream);
gdk_window_remove_filter (NULL, gdk_x11_selection_input_stream_filter_event, stream);
g_object_unref (stream);
@ -521,7 +521,7 @@ gdk_x11_selection_input_stream_new_async (GdkDisplay *display,
priv = gdk_x11_selection_input_stream_get_instance_private (stream);
priv->display = display;
GDK_X11_DISPLAY (display)->input_streams = g_slist_prepend (GDK_X11_DISPLAY (display)->input_streams, stream);
GDK_X11_DISPLAY (display)->streams = g_slist_prepend (GDK_X11_DISPLAY (display)->streams, stream);
priv->selection = g_strdup (selection);
priv->xselection = gdk_x11_get_xatom_by_name_for_display (display, priv->selection);
priv->target = g_strdup (target);

585
gdk/x11/gdkselectionoutputstream-x11.c Normal file
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@ -0,0 +1,585 @@
/* GIO - GLib Output, Output and Streaming Library
*
* Copyright (C) 2017 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Benjamin Otte <otte@gnome.org>
* Christian Kellner <gicmo@gnome.org>
*/
#include "config.h"
#include "gdkselectionoutputstream-x11.h"
#include "gdkdisplay-x11.h"
#include "gdkintl.h"
#include "gdkx11display.h"
#include "gdkx11property.h"
#include "gdkx11window.h"
typedef struct GdkX11SelectionOutputStreamPrivate GdkX11SelectionOutputStreamPrivate;
struct GdkX11SelectionOutputStreamPrivate {
GdkDisplay *display;
Window xwindow;
char *selection;
Atom xselection;
char *target;
Atom xtarget;
char *property;
Atom xproperty;
const char *type;
Atom xtype;
int format;
gulong timestamp;
GMutex mutex;
GCond cond;
GByteArray *data;
guint flush_requested : 1;
GTask *pending_task;
guint started : 1;
guint incr : 1;
guint delete_pending : 1;
};
G_DEFINE_TYPE_WITH_PRIVATE (GdkX11SelectionOutputStream, gdk_x11_selection_output_stream, G_TYPE_OUTPUT_STREAM);
static GdkFilterReturn
gdk_x11_selection_output_stream_filter_event (GdkXEvent *xevent,
GdkEvent *gdkevent,
gpointer data);
static gboolean
gdk_x11_selection_output_stream_can_flush (GdkX11SelectionOutputStream *stream)
{
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
if (priv->delete_pending)
return FALSE;
return TRUE;
}
static gboolean
gdk_x11_selection_output_stream_needs_flush_unlocked (GdkX11SelectionOutputStream *stream)
{
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
if (priv->data->len == 0)
return FALSE;
if (g_output_stream_is_closing (G_OUTPUT_STREAM (stream)))
return TRUE;
if (priv->flush_requested)
return TRUE;
return priv->data->len >= gdk_x11_display_get_max_request_size (priv->display);
}
static gboolean
gdk_x11_selection_output_stream_needs_flush (GdkX11SelectionOutputStream *stream)
{
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
gboolean result;
g_mutex_lock (&priv->mutex);
result = gdk_x11_selection_output_stream_needs_flush_unlocked (stream);
g_mutex_unlock (&priv->mutex);
return result;
}
static gsize
get_element_size (int format)
{
switch (format)
{
case 8:
return 1;
case 16:
return sizeof (short);
case 32:
return sizeof (long);
default:
g_warning ("Unknown format %u", format);
return 1;
}
}
static void
gdk_x11_selection_output_stream_perform_flush (GdkX11SelectionOutputStream *stream)
{
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
Display *xdisplay;
gsize element_size, n_elements;
int error;
g_assert (!priv->delete_pending);
xdisplay = gdk_x11_display_get_xdisplay (priv->display);
/* We operate on a foreign window, better guard against catastrophe */
gdk_x11_display_error_trap_push (priv->display);
g_mutex_lock (&priv->mutex);
element_size = get_element_size (priv->format);
n_elements = priv->data->len / element_size;
if (!priv->started && !g_output_stream_is_closing (G_OUTPUT_STREAM (stream)))
{
XWindowAttributes attrs;
priv->incr = TRUE;
GDK_NOTE(SELECTION, g_printerr ("%s:%s: initiating INCR transfer\n",
priv->selection, priv->target));
XGetWindowAttributes (xdisplay,
priv->xwindow,
&attrs);
if (!(attrs.your_event_mask & PropertyChangeMask))
{
XSelectInput (xdisplay, priv->xwindow, attrs.your_event_mask | PropertyChangeMask);
}
XChangeProperty (GDK_DISPLAY_XDISPLAY (priv->display),
priv->xwindow,
priv->xproperty,
gdk_x11_get_xatom_by_name_for_display (priv->display, "INCR"),
32,
PropModeReplace,
(guchar *) &(long) { n_elements },
1);
}
else
{
XChangeProperty (GDK_DISPLAY_XDISPLAY (priv->display),
priv->xwindow,
priv->xproperty,
priv->xtype,
priv->format,
PropModeReplace,
priv->data->data,
n_elements);
GDK_NOTE(SELECTION, g_printerr ("%s:%s: wrote %zu/%u bytes\n",
priv->selection, priv->target, n_elements * element_size, priv->data->len));
g_byte_array_remove_range (priv->data, 0, n_elements * element_size);
if (priv->data->len < element_size)
priv->flush_requested = FALSE;
}
if (!priv->started)
{
XSelectionEvent xevent;
xevent.type = SelectionNotify;
xevent.serial = 0;
xevent.send_event = True;
xevent.requestor = priv->xwindow;
xevent.selection = priv->xselection;
xevent.target = priv->xtarget;
xevent.property = priv->xproperty;
xevent.time = priv->timestamp;
if (XSendEvent (xdisplay, priv->xwindow, False, NoEventMask, (XEvent*) & xevent) == 0)
{
GDK_NOTE(SELECTION, g_printerr ("%s:%s: failed to XSendEvent()\n",
priv->selection, priv->target));
g_warning ("failed to XSendEvent()");
}
XSync (xdisplay, False);
GDK_NOTE(SELECTION, g_printerr ("%s:%s: sent SelectionNotify for %s on %s\n",
priv->selection, priv->target, priv->target, priv->property));
priv->started = TRUE;
}
priv->delete_pending = TRUE;
g_cond_broadcast (&priv->cond);
g_mutex_unlock (&priv->mutex);
/* XXX: handle failure here and report EPIPE for future operations on the stream? */
error = gdk_x11_display_error_trap_pop (priv->display);
if (error != Success)
{
GDK_NOTE(SELECTION, g_printerr ("%s:%s: X error during write: %d\n",
priv->selection, priv->target, error));
}
if (priv->pending_task)
{
g_task_return_int (priv->pending_task, GPOINTER_TO_SIZE (g_task_get_task_data (priv->pending_task)));
g_object_unref (priv->pending_task);
priv->pending_task = NULL;
}
}
static gboolean
gdk_x11_selection_output_stream_invoke_flush (gpointer data)
{
GdkX11SelectionOutputStream *stream = GDK_X11_SELECTION_OUTPUT_STREAM (data);
if (gdk_x11_selection_output_stream_needs_flush (stream) &
gdk_x11_selection_output_stream_can_flush (stream))
gdk_x11_selection_output_stream_perform_flush (stream);
return G_SOURCE_REMOVE;
}
static gssize
gdk_x11_selection_output_stream_write (GOutputStream *output_stream,
const void *buffer,
gsize count,
GCancellable *cancellable,
GError **error)
{
GdkX11SelectionOutputStream *stream = GDK_X11_SELECTION_OUTPUT_STREAM (output_stream);
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
g_mutex_lock (&priv->mutex);
g_byte_array_append (priv->data, buffer, count);
GDK_NOTE(SELECTION, g_printerr ("%s:%s: wrote %zu bytes, %u total now\n",
priv->selection, priv->target, count, priv->data->len));
g_mutex_unlock (&priv->mutex);
g_main_context_invoke (NULL, gdk_x11_selection_output_stream_invoke_flush, stream);
g_mutex_lock (&priv->mutex);
if (gdk_x11_selection_output_stream_needs_flush_unlocked (stream))
g_cond_wait (&priv->cond, &priv->mutex);
g_mutex_unlock (&priv->mutex);
return count;
}
static void
gdk_x11_selection_output_stream_write_async (GOutputStream *output_stream,
const void *buffer,
gsize count,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GdkX11SelectionOutputStream *stream = GDK_X11_SELECTION_OUTPUT_STREAM (output_stream);
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
GTask *task;
task = g_task_new (stream, cancellable, callback, user_data);
g_task_set_source_tag (task, gdk_x11_selection_output_stream_write_async);
g_task_set_priority (task, io_priority);
g_mutex_lock (&priv->mutex);
g_byte_array_append (priv->data, buffer, count);
GDK_NOTE(SELECTION, g_printerr ("%s:%s: async wrote %zu bytes, %u total now\n",
priv->selection, priv->target, count, priv->data->len));
g_mutex_unlock (&priv->mutex);
if (!gdk_x11_selection_output_stream_needs_flush (stream))
{
g_task_return_int (task, count);
g_object_unref (task);
return;
}
else if (!gdk_x11_selection_output_stream_can_flush (stream))
{
g_assert (priv->pending_task == NULL);
priv->pending_task = task;
g_task_set_task_data (task, GSIZE_TO_POINTER (count), NULL);
return;
}
else
{
gdk_x11_selection_output_stream_perform_flush (stream);
g_task_return_int (task, count);
g_object_unref (task);
return;
}
}
static gssize
gdk_x11_selection_output_stream_write_finish (GOutputStream *stream,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (result, stream), -1);
g_return_val_if_fail (g_task_get_source_tag (G_TASK (result)) == gdk_x11_selection_output_stream_write_async, -1);
return g_task_propagate_int (G_TASK (result), error);
}
static gboolean
gdk_x11_selection_output_request_flush (GdkX11SelectionOutputStream *stream)
{
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
gboolean needs_flush;
g_mutex_lock (&priv->mutex);
if (priv->data->len >= get_element_size (priv->format))
priv->flush_requested = TRUE;
needs_flush = gdk_x11_selection_output_stream_needs_flush_unlocked (stream);
g_mutex_unlock (&priv->mutex);
GDK_NOTE(SELECTION, g_printerr ("%s:%s: requested flush%s\n",
priv->selection, priv->target, needs_flush ? "" : ", but not needed"));
return needs_flush;
}
static gboolean
gdk_x11_selection_output_stream_flush (GOutputStream *output_stream,
GCancellable *cancellable,
GError **error)
{
GdkX11SelectionOutputStream *stream = GDK_X11_SELECTION_OUTPUT_STREAM (output_stream);
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
if (!gdk_x11_selection_output_request_flush (stream))
return TRUE;
g_main_context_invoke (NULL, gdk_x11_selection_output_stream_invoke_flush, stream);
g_mutex_lock (&priv->mutex);
if (gdk_x11_selection_output_stream_needs_flush_unlocked (stream))
g_cond_wait (&priv->cond, &priv->mutex);
g_mutex_unlock (&priv->mutex);
return TRUE;
}
static void
gdk_x11_selection_output_stream_flush_async (GOutputStream *output_stream,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GdkX11SelectionOutputStream *stream = GDK_X11_SELECTION_OUTPUT_STREAM (output_stream);
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
GTask *task;
task = g_task_new (stream, cancellable, callback, user_data);
g_task_set_source_tag (task, gdk_x11_selection_output_stream_flush_async);
g_task_set_priority (task, io_priority);
if (!gdk_x11_selection_output_stream_can_flush (stream))
{
if (gdk_x11_selection_output_request_flush (stream))
{
g_assert (priv->pending_task == NULL);
priv->pending_task = task;
return;
}
else
{
g_task_return_boolean (task, TRUE);
g_object_unref (task);
return;
}
}
gdk_x11_selection_output_stream_perform_flush (stream);
g_task_return_boolean (task, TRUE);
g_object_unref (task);
return;
}
static gboolean
gdk_x11_selection_output_stream_flush_finish (GOutputStream *stream,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (result, stream), FALSE);
g_return_val_if_fail (g_async_result_is_tagged (result, gdk_x11_selection_output_stream_flush_async), FALSE);
return g_task_propagate_boolean (G_TASK (result), error);
}
static gboolean
gdk_x11_selection_output_stream_invoke_close (gpointer stream)
{
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
GDK_X11_DISPLAY (priv->display)->streams = g_slist_remove (GDK_X11_DISPLAY (priv->display)->streams, stream);
gdk_window_remove_filter (NULL, gdk_x11_selection_output_stream_filter_event, stream);
return G_SOURCE_REMOVE;
}
static gboolean
gdk_x11_selection_output_stream_close (GOutputStream *stream,
GCancellable *cancellable,
GError **error)
{
g_main_context_invoke (NULL, gdk_x11_selection_output_stream_invoke_close, stream);
return TRUE;
}
static void
gdk_x11_selection_output_stream_close_async (GOutputStream *stream,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (stream, cancellable, callback, user_data);
g_task_set_source_tag (task, gdk_x11_selection_output_stream_close_async);
g_task_set_priority (task, io_priority);
gdk_x11_selection_output_stream_invoke_close (stream);
g_task_return_boolean (task, TRUE);
g_object_unref (task);
}
static gboolean
gdk_x11_selection_output_stream_close_finish (GOutputStream *stream,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (result, stream), FALSE);
g_return_val_if_fail (g_async_result_is_tagged (result, gdk_x11_selection_output_stream_close_async), FALSE);
return g_task_propagate_boolean (G_TASK (result), error);
}
static void
gdk_x11_selection_output_stream_finalize (GObject *object)
{
GdkX11SelectionOutputStream *stream = GDK_X11_SELECTION_OUTPUT_STREAM (object);
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
g_byte_array_unref (priv->data);
g_cond_clear (&priv->cond);
g_mutex_clear (&priv->mutex);
g_free (priv->selection);
g_free (priv->target);
g_free (priv->property);
G_OBJECT_CLASS (gdk_x11_selection_output_stream_parent_class)->finalize (object);
}
static void
gdk_x11_selection_output_stream_class_init (GdkX11SelectionOutputStreamClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GOutputStreamClass *output_stream_class = G_OUTPUT_STREAM_CLASS (klass);
object_class->finalize = gdk_x11_selection_output_stream_finalize;
output_stream_class->write_fn = gdk_x11_selection_output_stream_write;
output_stream_class->flush = gdk_x11_selection_output_stream_flush;
output_stream_class->close_fn = gdk_x11_selection_output_stream_close;
output_stream_class->write_async = gdk_x11_selection_output_stream_write_async;
output_stream_class->write_finish = gdk_x11_selection_output_stream_write_finish;
output_stream_class->flush_async = gdk_x11_selection_output_stream_flush_async;
output_stream_class->flush_finish = gdk_x11_selection_output_stream_flush_finish;
output_stream_class->close_async = gdk_x11_selection_output_stream_close_async;
output_stream_class->close_finish = gdk_x11_selection_output_stream_close_finish;
}
static void
gdk_x11_selection_output_stream_init (GdkX11SelectionOutputStream *stream)
{
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
g_mutex_init (&priv->mutex);
g_cond_init (&priv->cond);
priv->data = g_byte_array_new ();
}
static GdkFilterReturn
gdk_x11_selection_output_stream_filter_event (GdkXEvent *xev,
GdkEvent *gdkevent,
gpointer data)
{
GdkX11SelectionOutputStream *stream = GDK_X11_SELECTION_OUTPUT_STREAM (data);
GdkX11SelectionOutputStreamPrivate *priv = gdk_x11_selection_output_stream_get_instance_private (stream);
XEvent *xevent = xev;
Display *xdisplay;
xdisplay = gdk_x11_display_get_xdisplay (priv->display);
if (xevent->xany.display != xdisplay ||
xevent->xany.window != priv->xwindow)
return GDK_FILTER_CONTINUE;
switch (xevent->type)
{
case PropertyNotify:
if (!priv->incr ||
xevent->xproperty.atom != priv->xproperty ||
xevent->xproperty.state != PropertyDelete)
return GDK_FILTER_CONTINUE;
GDK_NOTE(SELECTION, g_printerr ("%s:%s: got PropertyNotify Delete during INCR\n",
priv->selection, priv->target));
return GDK_FILTER_CONTINUE;
default:
return GDK_FILTER_CONTINUE;
}
}
GOutputStream *
gdk_x11_selection_output_stream_new (GdkDisplay *display,
Window window,
const char *selection,
const char *target,
const char *property,
const char *type,
int format,
gulong timestamp)
{
GdkX11SelectionOutputStream *stream;
GdkX11SelectionOutputStreamPrivate *priv;
stream = g_object_new (GDK_TYPE_X11_SELECTION_OUTPUT_STREAM, NULL);
priv = gdk_x11_selection_output_stream_get_instance_private (stream);
priv->display = display;
GDK_X11_DISPLAY (display)->streams = g_slist_prepend (GDK_X11_DISPLAY (display)->streams, stream);
priv->xwindow = window;
priv->selection = g_strdup (selection);
priv->xselection = gdk_x11_get_xatom_by_name_for_display (display, priv->selection);
priv->target = g_strdup (target);
priv->xtarget = gdk_x11_get_xatom_by_name_for_display (display, priv->target);
priv->property = g_strdup (property);
priv->xproperty = gdk_x11_get_xatom_by_name_for_display (display, priv->property);
priv->type = g_strdup (type);
priv->xtype = gdk_x11_get_xatom_by_name_for_display (display, priv->type);
priv->format = format;
priv->timestamp = timestamp;
gdk_window_add_filter (NULL, gdk_x11_selection_output_stream_filter_event, stream);
return G_OUTPUT_STREAM (stream);
}

67
gdk/x11/gdkselectionoutputstream-x11.h Normal file
View File

@ -0,0 +1,67 @@
/* GIO - GLib Output, Output and Streaming Library
*
* Copyright (C) 2017 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Benjamin Otte <otte@gnome.org>
* Christian Kellner <gicmo@gnome.org>
*/
#ifndef __GDK_X11_SELECTION_OUTPUT_STREAM_H__
#define __GDK_X11_SELECTION_OUTPUT_STREAM_H__
#include <gio/gio.h>
#include "gdktypes.h"
#include <X11/Xlib.h>
G_BEGIN_DECLS
#define GDK_TYPE_X11_SELECTION_OUTPUT_STREAM (gdk_x11_selection_output_stream_get_type ())
#define GDK_X11_SELECTION_OUTPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GDK_TYPE_X11_SELECTION_OUTPUT_STREAM, GdkX11SelectionOutputStream))
#define GDK_X11_SELECTION_OUTPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), GDK_TYPE_X11_SELECTION_OUTPUT_STREAM, GdkX11SelectionOutputStreamClass))
#define GDK_IS_X11_SELECTION_OUTPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GDK_TYPE_X11_SELECTION_OUTPUT_STREAM))
#define GDK_IS_X11_SELECTION_OUTPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GDK_TYPE_X11_SELECTION_OUTPUT_STREAM))
#define GDK_X11_SELECTION_OUTPUT_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GDK_TYPE_X11_SELECTION_OUTPUT_STREAM, GdkX11SelectionOutputStreamClass))
typedef struct GdkX11SelectionOutputStream GdkX11SelectionOutputStream;
typedef struct GdkX11SelectionOutputStreamClass GdkX11SelectionOutputStreamClass;
struct GdkX11SelectionOutputStream
{
GOutputStream parent_instance;
};
struct GdkX11SelectionOutputStreamClass
{
GOutputStreamClass parent_class;
};
GType gdk_x11_selection_output_stream_get_type (void) G_GNUC_CONST;
GOutputStream * gdk_x11_selection_output_stream_new (GdkDisplay *display,
Window window,
const char *selection,
const char *target,
const char *property,
const char *type,
int format,
gulong timestamp);
G_END_DECLS
#endif /* __GDK_X11_SELECTION_OUTPUT_STREAM_H__ */

204
gdk/x11/gdktextlistconverter-x11.c
View File

@ -39,6 +39,8 @@ struct _GdkX11TextListConverter
const char *encoding; /* interned */
gint format;
guint encoder : 1;
};
struct _GdkX11TextListConverterClass
@ -47,17 +49,39 @@ struct _GdkX11TextListConverterClass
};
static GConverterResult
gdk_x11_text_list_converter_convert (GConverter *converter,
const void *inbuf,
gsize inbuf_size,
void *outbuf,
gsize outbuf_size,
GConverterFlags flags,
gsize *bytes_read,
gsize *bytes_written,
GError **error)
write_output (void *outbuf,
gsize outbuf_size,
gsize *bytes_written,
const void *data,
gssize len,
GError **error)
{
if (len < 0)
len = strlen (data) + 1;
if (outbuf_size < len)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NO_SPACE,
_("Not enough space in destination"));
return G_CONVERTER_ERROR;
}
memcpy (outbuf, data, len);
*bytes_written = len;
return G_CONVERTER_FINISHED;
}
static GConverterResult
gdk_x11_text_list_converter_decode (GdkX11TextListConverter *conv,
const void *inbuf,
gsize inbuf_size,
void *outbuf,
gsize outbuf_size,
GConverterFlags flags,
gsize *bytes_read,
gsize *bytes_written,
GError **error)
{
GdkX11TextListConverter *conv = GDK_X11_TEXT_LIST_CONVERTER (converter);
gint count;
char **list;
@ -83,32 +107,135 @@ gdk_x11_text_list_converter_convert (GConverter *converter,
}
else if (count == 0)
{
if (outbuf_size < 1)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NO_SPACE,
_("Not enough space in destination"));
return G_CONVERTER_ERROR;
}
((gchar *) outbuf)[0] = 0;
*bytes_read = inbuf_size;
*bytes_written = 1;
return G_CONVERTER_FINISHED;
return write_output (outbuf, outbuf_size, bytes_written, "", 1, error);
}
else
{
gsize len = strlen (list[0]) + 1;
if (outbuf_size < len)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NO_SPACE,
_("Not enough space in destination"));
return G_CONVERTER_ERROR;
}
memcpy (outbuf, list[0], len);
GConverterResult result;
result = write_output (outbuf, outbuf_size, bytes_written, list[0], -1, error);
g_strfreev (list);
*bytes_read = inbuf_size;
*bytes_written = len;
return G_CONVERTER_FINISHED;
return result;
}
}
static GConverterResult
gdk_x11_text_list_converter_encode (GdkX11TextListConverter *conv,
const void *inbuf,
gsize inbuf_size,
void *outbuf,
gsize outbuf_size,
GConverterFlags flags,
gsize *bytes_read,
gsize *bytes_written,
GError **error)
{
if (!(flags & G_CONVERTER_INPUT_AT_END))
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_PARTIAL_INPUT,
_("Need complete input to do conversion"));
return G_CONVERTER_ERROR;
}
if (g_str_equal (conv->encoding, "STRING") ||
g_str_equal (conv->encoding, "TEXT"))
{
GConverterResult result;
gchar *tmp, *latin1;
tmp = g_strndup (inbuf, inbuf_size);
latin1 = gdk_utf8_to_string_target (tmp);
g_free (tmp);
if (latin1)
{
result = write_output (outbuf, outbuf_size, bytes_written, latin1, -1, error);
g_free (latin1);
}
else
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA,
_("Invalid byte sequence in conversion input"));
result = G_CONVERTER_ERROR;
}
return result;
}
else if (g_str_equal (conv->encoding, "COMPOUND_TEXT"))
{
GConverterResult result;
guchar *text;
GdkAtom encoding;
gint format;
gint new_length;
char *tmp;
tmp = g_strndup (inbuf, inbuf_size);
if (gdk_x11_display_utf8_to_compound_text (conv->display, tmp,
&encoding, &format, &text, &new_length))
{
if (encoding == gdk_atom_intern (conv->encoding, FALSE) &&
format == conv->format)
{
result = write_output (outbuf, outbuf_size, bytes_written, text, new_length, error);
}
else
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Invalid formats in compound text conversion."));
result = G_CONVERTER_ERROR;
}
gdk_x11_free_compound_text (text);
}
else
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA,
_("Invalid byte sequence in conversion input"));
result = G_CONVERTER_ERROR;
}
g_free (tmp);
return result;
}
else
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Unsupported encoding \"%s\""), conv->encoding);
return G_CONVERTER_ERROR;
}
return FALSE;
}
static GConverterResult
gdk_x11_text_list_converter_convert (GConverter *converter,
const void *inbuf,
gsize inbuf_size,
void *outbuf,
gsize outbuf_size,
GConverterFlags flags,
gsize *bytes_read,
gsize *bytes_written,
GError **error)
{
GdkX11TextListConverter *conv = GDK_X11_TEXT_LIST_CONVERTER (converter);
if (conv->encoder)
{
return gdk_x11_text_list_converter_encode (conv,
inbuf, inbuf_size,
outbuf, outbuf_size,
flags,
bytes_read, bytes_written,
error);
}
else
{
return gdk_x11_text_list_converter_decode (conv,
inbuf, inbuf_size,
outbuf, outbuf_size,
flags,
bytes_read, bytes_written,
error);
}
}
@ -167,3 +294,20 @@ gdk_x11_text_list_converter_to_utf8_new (GdkDisplay *display,
return G_CONVERTER (conv);
}
GConverter *
gdk_x11_text_list_converter_from_utf8_new (GdkDisplay *display,
const char *encoding,
int format)
{
GdkX11TextListConverter *conv;
conv = g_object_new (GDK_TYPE_X11_TEXT_LIST_CONVERTER, NULL);
conv->display = g_object_ref (display);
conv->encoding = g_intern_string (encoding);
conv->format = format;
conv->encoder = TRUE;
return G_CONVERTER (conv);
}

3
gdk/x11/gdktextlistconverter-x11.h
View File

@ -37,6 +37,9 @@ GType gdk_x11_text_list_converter_get_type (void) G_GNUC_CO
GConverter * gdk_x11_text_list_converter_to_utf8_new (GdkDisplay *display,
const char *encoding,
int format);
GConverter * gdk_x11_text_list_converter_from_utf8_new (GdkDisplay *display,
const char *encoding,
int format);
G_END_DECLS

1
gdk/x11/meson.build
View File

@ -22,6 +22,7 @@ gdk_x11_sources = files([
'gdkscreen-x11.c',
'gdkselection-x11.c',
'gdkselectioninputstream-x11.c',
'gdkselectionoutputstream-x11.c',
'gdktextlistconverter-x11.c',
'gdkvisual-x11.c',
'gdkvulkancontext-x11.c',