forked from AuroraMiddleware/gtk
2cbe094b91
GdkContentFormatsBuilder is currently not introspectable, as it does not have a GType. We can turn it into a boxed type, but we need to implement memory management for it. The current gdk_content_formats_builder_free() function returns a newly constructed value, so we cannot use it as a GBoxedFreeFunc; additionally copying a GdkContentFormatsBuilder contents would make it a bit odd, as you could get multiple identical GdkContentFormats out of the copies. A simple approach is to model the GdkContentFormatsBuilder API to follow the GBytes one: use reference counting for memory management, and have a function to release a reference, return a GdkContentFormats, and reset the GdkContentFormatsBuilder state. For language bindings, we can provide a get_formats() function that returns the GdkContentFormats instance and resets the builder instance, leaving the reference count untouched. For C convenience we can keep gdk_content_formats_builder_free(), and make it a wrapper around gdk_content_formats_builder_get_formats(), with the guarantee that it'll free the builder instance regardless of its current reference count. https://bugzilla.gnome.org/show_bug.cgi?id=793097 https://blogs.gnome.org/otte/2018/02/03/builders/
400 lines
13 KiB
C
400 lines
13 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 "gdkprimary-wayland.h"
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#include "gdkclipboardprivate.h"
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#include "gdkcontentformats.h"
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#include "gdkintl.h"
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#include "gdkprivate-wayland.h"
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#include "gdk-private.h"
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#include <glib-unix.h>
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#include <gio/gunixinputstream.h>
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#include <gio/gunixoutputstream.h>
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typedef struct _GdkWaylandPrimaryClass GdkWaylandPrimaryClass;
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struct _GdkWaylandPrimary
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{
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GdkClipboard parent;
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struct gtk_primary_selection_device *primary_data_device;
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struct gtk_primary_selection_offer *pending;
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GdkContentFormatsBuilder *pending_builder;
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struct gtk_primary_selection_offer *offer;
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GdkContentFormats *offer_formats;
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struct gtk_primary_selection_source *source;
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};
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struct _GdkWaylandPrimaryClass
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{
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GdkClipboardClass parent_class;
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};
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G_DEFINE_TYPE (GdkWaylandPrimary, gdk_wayland_primary, GDK_TYPE_CLIPBOARD)
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static void
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gdk_wayland_primary_discard_pending (GdkWaylandPrimary *cb)
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{
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if (cb->pending_builder)
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{
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GdkContentFormats *ignore = gdk_content_formats_builder_free_to_formats (cb->pending_builder);
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gdk_content_formats_unref (ignore);
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cb->pending_builder = NULL;
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}
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g_clear_pointer (&cb->pending, (GDestroyNotify) gtk_primary_selection_offer_destroy);
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}
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static void
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gdk_wayland_primary_discard_offer (GdkWaylandPrimary *cb)
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{
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g_clear_pointer (&cb->offer_formats, gdk_content_formats_unref);
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g_clear_pointer (&cb->offer, (GDestroyNotify) gtk_primary_selection_offer_destroy);
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}
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static void
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gdk_wayland_primary_discard_source (GdkWaylandPrimary *cb)
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{
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g_clear_pointer (&cb->source, (GDestroyNotify) wl_data_source_destroy);
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}
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static void
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gdk_wayland_primary_finalize (GObject *object)
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{
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GdkWaylandPrimary *cb = GDK_WAYLAND_PRIMARY (object);
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gdk_wayland_primary_discard_pending (cb);
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gdk_wayland_primary_discard_offer (cb);
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gdk_wayland_primary_discard_source (cb);
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G_OBJECT_CLASS (gdk_wayland_primary_parent_class)->finalize (object);
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}
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static void
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gdk_wayland_primary_claim_remote (GdkWaylandPrimary *cb,
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struct gtk_primary_selection_offer *offer,
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GdkContentFormats *formats)
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{
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g_return_if_fail (GDK_IS_WAYLAND_PRIMARY (cb));
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if (cb->source)
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{
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)), CLIPBOARD, g_message ("%p: Ignoring clipboard offer for self", cb));
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gdk_content_formats_unref (formats);
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return;
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}
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gdk_wayland_primary_discard_offer (cb);
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)), CLIPBOARD, char *s = gdk_content_formats_to_string (formats);
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g_message ("%p: remote clipboard claim for %s", cb, s);
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g_free (s); );
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cb->offer_formats = formats;
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cb->offer = offer;
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gdk_clipboard_claim_remote (GDK_CLIPBOARD (cb),
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cb->offer_formats);
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}
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static void
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primary_offer_offer (void *data,
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struct gtk_primary_selection_offer *offer,
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const char *type)
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{
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GdkWaylandPrimary *cb = data;
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if (cb->pending != offer)
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{
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)), SELECTION, g_message ("%p: offer for unknown selection %p of %s",
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cb, offer, type));
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return;
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}
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gdk_content_formats_builder_add_mime_type (cb->pending_builder, type);
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}
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static const struct gtk_primary_selection_offer_listener primary_offer_listener = {
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primary_offer_offer,
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};
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static void
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primary_selection_data_offer (void *data,
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struct gtk_primary_selection_device *device,
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struct gtk_primary_selection_offer *offer)
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{
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GdkWaylandPrimary *cb = data;
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)), SELECTION, g_message ("%p: new primary offer %p",
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cb, offer));
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gdk_wayland_primary_discard_pending (cb);
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cb->pending = offer;
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gtk_primary_selection_offer_add_listener (offer,
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&primary_offer_listener,
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cb);
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cb->pending_builder = gdk_content_formats_builder_new ();
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}
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static void
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primary_selection_selection (void *data,
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struct gtk_primary_selection_device *device,
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struct gtk_primary_selection_offer *offer)
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{
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GdkWaylandPrimary *cb = data;
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GdkContentFormats *formats;
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if (offer == NULL)
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{
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gdk_wayland_primary_claim_remote (cb, NULL, gdk_content_formats_new (NULL, 0));
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return;
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}
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if (cb->pending != offer)
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{
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)), SELECTION, g_message ("%p: ignoring unknown data offer %p",
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cb, offer));
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return;
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}
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formats = gdk_content_formats_builder_free_to_formats (cb->pending_builder);
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cb->pending_builder = NULL;
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cb->pending = NULL;
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gdk_wayland_primary_claim_remote (cb, offer, formats);
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}
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static const struct gtk_primary_selection_device_listener primary_selection_device_listener = {
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primary_selection_data_offer,
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primary_selection_selection,
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};
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static void
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gdk_wayland_primary_write_done (GObject *clipboard,
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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 (!gdk_clipboard_write_finish (GDK_CLIPBOARD (clipboard), result, &error))
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{
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (clipboard)), SELECTION, g_message ("%p: failed to write stream: %s", clipboard, error->message));
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g_error_free (error);
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}
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}
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static void
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gdk_wayland_primary_data_source_send (void *data,
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struct gtk_primary_selection_source *source,
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const char *mime_type,
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int32_t fd)
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{
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GdkWaylandPrimary *cb = GDK_WAYLAND_PRIMARY (data);
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GOutputStream *stream;
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (data)), SELECTION, g_message ("%p: data source send request for %s on fd %d",
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source, mime_type, fd));
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mime_type = gdk_intern_mime_type (mime_type);
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stream = g_unix_output_stream_new (fd, TRUE);
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gdk_clipboard_write_async (GDK_CLIPBOARD (cb),
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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_wayland_primary_write_done,
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cb);
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g_object_unref (stream);
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}
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static void
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gdk_wayland_primary_data_source_cancelled (void *data,
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struct gtk_primary_selection_source *source)
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{
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GdkWaylandPrimary *cb = GDK_WAYLAND_PRIMARY (data);
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (GDK_CLIPBOARD (data)), CLIPBOARD, g_message ("%p: data source cancelled", data));
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if (cb->source == source)
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{
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gdk_wayland_primary_discard_source (cb);
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gdk_wayland_primary_claim_remote (cb, NULL, gdk_content_formats_new (NULL, 0));
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}
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}
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static const struct gtk_primary_selection_source_listener primary_source_listener = {
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gdk_wayland_primary_data_source_send,
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gdk_wayland_primary_data_source_cancelled,
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};
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static gboolean
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gdk_wayland_primary_claim (GdkClipboard *clipboard,
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GdkContentFormats *formats,
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gboolean local,
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GdkContentProvider *content)
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{
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GdkWaylandPrimary *cb = GDK_WAYLAND_PRIMARY (clipboard);
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if (local)
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{
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GdkWaylandDisplay *wdisplay = GDK_WAYLAND_DISPLAY (gdk_clipboard_get_display (clipboard));
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const char * const *mime_types;
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gsize i, n_mime_types;
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gdk_wayland_primary_discard_offer (cb);
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gdk_wayland_primary_discard_source (cb);
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cb->source = gtk_primary_selection_device_manager_create_source (wdisplay->primary_selection_manager);
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gtk_primary_selection_source_add_listener (cb->source, &primary_source_listener, cb);
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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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gtk_primary_selection_source_offer (cb->source, mime_types[i]);
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}
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gtk_primary_selection_device_set_selection (cb->primary_data_device,
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cb->source,
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_gdk_wayland_display_get_serial (wdisplay));
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}
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return GDK_CLIPBOARD_CLASS (gdk_wayland_primary_parent_class)->claim (clipboard, formats, local, content);
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}
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static void
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gdk_wayland_primary_read_async (GdkClipboard *clipboard,
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GdkContentFormats *formats,
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int io_priority,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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GdkWaylandPrimary *cb = GDK_WAYLAND_PRIMARY (clipboard);
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GInputStream *stream;
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const char *mime_type;
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int pipe_fd[2];
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GError *error = NULL;
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GTask *task;
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task = g_task_new (clipboard, cancellable, callback, user_data);
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g_task_set_priority (task, io_priority);
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g_task_set_source_tag (task, gdk_wayland_primary_read_async);
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GDK_DISPLAY_NOTE (gdk_clipboard_get_display (clipboard), CLIPBOARD, char *s = gdk_content_formats_to_string (formats);
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g_message ("%p: read for %s", cb, s);
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g_free (s); );
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mime_type = gdk_content_formats_match_mime_type (formats, cb->offer_formats);
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if (mime_type == NULL)
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{
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g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
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_("No compatible transfer format found"));
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return;
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}
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/* offer formats should be empty if we have no offer */
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g_assert (cb->offer);
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g_task_set_task_data (task, (gpointer) mime_type, NULL);
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if (!g_unix_open_pipe (pipe_fd, FD_CLOEXEC, &error))
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{
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g_task_return_error (task, error);
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return;
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}
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gtk_primary_selection_offer_receive (cb->offer, mime_type, pipe_fd[1]);
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stream = g_unix_input_stream_new (pipe_fd[0], TRUE);
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close (pipe_fd[1]);
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g_task_return_pointer (task, stream, g_object_unref);
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}
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static GInputStream *
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gdk_wayland_primary_read_finish (GdkClipboard *clipboard,
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const char **out_mime_type,
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GAsyncResult *result,
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GError **error)
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{
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GInputStream *stream;
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GTask *task;
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g_return_val_if_fail (g_task_is_valid (result, G_OBJECT (clipboard)), NULL);
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task = G_TASK (result);
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g_return_val_if_fail (g_task_get_source_tag (task) == gdk_wayland_primary_read_async, NULL);
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stream = g_task_propagate_pointer (task, error);
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if (stream)
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{
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if (out_mime_type)
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*out_mime_type = g_task_get_task_data (task);
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g_object_ref (stream);
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}
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else
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{
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if (out_mime_type)
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*out_mime_type = NULL;
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}
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return stream;
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}
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static void
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gdk_wayland_primary_class_init (GdkWaylandPrimaryClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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GdkClipboardClass *clipboard_class = GDK_CLIPBOARD_CLASS (class);
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object_class->finalize = gdk_wayland_primary_finalize;
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clipboard_class->claim = gdk_wayland_primary_claim;
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clipboard_class->read_async = gdk_wayland_primary_read_async;
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clipboard_class->read_finish = gdk_wayland_primary_read_finish;
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}
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static void
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gdk_wayland_primary_init (GdkWaylandPrimary *cb)
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{
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}
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GdkClipboard *
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gdk_wayland_primary_new (GdkWaylandSeat *seat)
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{
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GdkWaylandDisplay *wdisplay;
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GdkWaylandPrimary *cb;
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wdisplay = GDK_WAYLAND_DISPLAY (gdk_seat_get_display (GDK_SEAT (seat)));
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cb = g_object_new (GDK_TYPE_WAYLAND_PRIMARY,
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"display", wdisplay,
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NULL);
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cb->primary_data_device =
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gtk_primary_selection_device_manager_get_device (wdisplay->primary_selection_manager,
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gdk_wayland_seat_get_wl_seat (GDK_SEAT (seat)));
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gtk_primary_selection_device_add_listener (cb->primary_data_device,
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&primary_selection_device_listener, cb);
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return GDK_CLIPBOARD (cb);
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}
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