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gtk2/gdk/wayland/gdkselection-wayland.c
Benjamin Otte ff577e6c2c wayland: Add primary clipboard subclass 
I decided to put this in a custom subclass, because then I could keep
the whole gtk primary protocol self-contained.

The other option would have been reusing GdkWaylandClipboard, but that
didn't seem worth it, especially because that code needs to interact
with the DND machinery, while the primary doesn't.
2017-12-03 05:46:49 +01:00

1384 lines
38 KiB
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/*
* Copyright © 2010 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <fcntl.h>
#include <unistd.h>
#include <gio/gunixinputstream.h>
#include <gio/gunixoutputstream.h>
#include <glib-unix.h>
#include "gdkwayland.h"
#include "gdkprivate-wayland.h"
#include "gdkdisplay-wayland.h"
#include "gdkcontentformatsprivate.h"
#include "gdkdndprivate.h"
#include "gdkselection.h"
#include "gdkproperty.h"
#include <string.h>
typedef struct _SelectionBuffer SelectionBuffer;
typedef struct _SelectionData SelectionData;
typedef struct _StoredSelection StoredSelection;
typedef struct _AsyncWriteData AsyncWriteData;
typedef struct _DataOfferData DataOfferData;
struct _SelectionBuffer
{
GInputStream *stream;
GCancellable *cancellable;
GByteArray *data;
GList *requestors;
GdkAtom selection;
GdkAtom target;
gint ref_count;
};
struct _StoredSelection
{
GdkWindow *source;
GCancellable *cancellable;
guchar *data;
gsize data_len;
GdkAtom type;
gint fd;
};
struct _DataOfferData
{
GDestroyNotify destroy_notify;
gpointer offer_data;
GdkContentFormats *targets;
};
struct _AsyncWriteData
{
GOutputStream *stream;
GdkWaylandSelection *selection;
gsize index;
};
struct _SelectionData
{
DataOfferData *offer;
GHashTable *buffers; /* Hashtable of target_atom->SelectionBuffer */
};
enum {
ATOM_DND,
N_ATOMS
};
static GdkAtom atoms[N_ATOMS] = { 0 };
struct _GdkWaylandSelection
{
/* Destination-side data */
SelectionData selections[N_ATOMS];
GHashTable *offers; /* Currently alive offers, Hashtable of wl_data_offer->DataOfferData */
/* Source-side data */
StoredSelection stored_selection;
GArray *source_targets;
GdkAtom requested_target;
struct wl_data_source *dnd_source; /* Owned by the GdkDragContext */
GdkWindow *dnd_owner;
};
static void selection_buffer_read (SelectionBuffer *buffer);
static void async_write_data_write (AsyncWriteData *write_data);
static void emit_selection_clear (GdkDisplay *display, GdkAtom selection);
static void
selection_buffer_notify (SelectionBuffer *buffer)
{
GdkEvent *event;
GList *l;
for (l = buffer->requestors; l; l = l->next)
{
event = gdk_event_new (GDK_SELECTION_NOTIFY);
event->selection.window = g_object_ref (l->data);
event->selection.send_event = FALSE;
event->selection.selection = buffer->selection;
event->selection.target = buffer->target;
event->selection.property = gdk_atom_intern_static_string ("GDK_SELECTION");
event->selection.time = GDK_CURRENT_TIME;
event->selection.requestor = g_object_ref (l->data);
gdk_event_put (event);
gdk_event_free (event);
}
}
static SelectionBuffer *
selection_buffer_new (GInputStream *stream,
GdkAtom selection,
GdkAtom target)
{
SelectionBuffer *buffer;
buffer = g_new0 (SelectionBuffer, 1);
buffer->stream = (stream) ? g_object_ref (stream) : NULL;
buffer->cancellable = g_cancellable_new ();
buffer->data = g_byte_array_new ();
buffer->selection = selection;
buffer->target = target;
buffer->ref_count = 1;
if (stream)
selection_buffer_read (buffer);
return buffer;
}
static SelectionBuffer *
selection_buffer_ref (SelectionBuffer *buffer)
{
buffer->ref_count++;
return buffer;
}
static void
selection_buffer_unref (SelectionBuffer *buffer_data)
{
buffer_data->ref_count--;
if (buffer_data->ref_count != 0)
return;
if (buffer_data->cancellable)
g_object_unref (buffer_data->cancellable);
if (buffer_data->stream)
g_object_unref (buffer_data->stream);
if (buffer_data->data)
g_byte_array_unref (buffer_data->data);
g_free (buffer_data);
}
static void
selection_buffer_append_data (SelectionBuffer *buffer,
gconstpointer data,
gsize len)
{
g_byte_array_append (buffer->data, data, len);
}
static void
selection_buffer_cancel_and_unref (SelectionBuffer *buffer_data)
{
if (buffer_data->cancellable)
g_cancellable_cancel (buffer_data->cancellable);
selection_buffer_unref (buffer_data);
}
static void
selection_buffer_add_requestor (SelectionBuffer *buffer,
GdkWindow *requestor)
{
if (!g_list_find (buffer->requestors, requestor))
buffer->requestors = g_list_prepend (buffer->requestors,
g_object_ref (requestor));
}
static gboolean
selection_buffer_remove_requestor (SelectionBuffer *buffer,
GdkWindow *requestor)
{
GList *link = g_list_find (buffer->requestors, requestor);
if (!link)
return FALSE;
g_object_unref (link->data);
buffer->requestors = g_list_delete_link (buffer->requestors, link);
return TRUE;
}
static inline glong
get_buffer_size (void)
{
return sysconf (_SC_PAGESIZE);
}
static void
selection_buffer_read_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
SelectionBuffer *buffer = user_data;
gboolean finished = TRUE;
GError *error = NULL;
GBytes *bytes;
bytes = g_input_stream_read_bytes_finish (buffer->stream, result, &error);
if (bytes)
{
finished = g_bytes_get_size (bytes) < get_buffer_size ();
selection_buffer_append_data (buffer,
g_bytes_get_data (bytes, NULL),
g_bytes_get_size (bytes));
g_bytes_unref (bytes);
}
if (!finished)
selection_buffer_read (buffer);
else
{
if (error)
{
g_warning (G_STRLOC ": error reading selection buffer: %s", error->message);
g_error_free (error);
}
else
selection_buffer_notify (buffer);
g_input_stream_close (buffer->stream, NULL, NULL);
g_clear_object (&buffer->stream);
g_clear_object (&buffer->cancellable);
}
selection_buffer_unref (buffer);
}
static void
selection_buffer_read (SelectionBuffer *buffer)
{
selection_buffer_ref (buffer);
g_input_stream_read_bytes_async (buffer->stream, get_buffer_size(),
G_PRIORITY_DEFAULT,
buffer->cancellable, selection_buffer_read_cb,
buffer);
}
static DataOfferData *
data_offer_data_new (gpointer offer,
GDestroyNotify destroy_notify)
{
DataOfferData *info;
info = g_slice_new0 (DataOfferData);
info->offer_data = offer;
info->destroy_notify = destroy_notify;
info->targets = gdk_content_formats_new (NULL, 0);
return info;
}
static void
data_offer_data_free (DataOfferData *info)
{
info->destroy_notify (info->offer_data);
gdk_content_formats_unref (info->targets);
g_slice_free (DataOfferData, info);
}
GdkWaylandSelection *
gdk_wayland_selection_new (void)
{
GdkWaylandSelection *selection;
gint i;
/* init atoms */
atoms[ATOM_DND] = gdk_atom_intern_static_string ("GdkWaylandSelection");
selection = g_new0 (GdkWaylandSelection, 1);
for (i = 0; i < G_N_ELEMENTS (selection->selections); i++)
{
selection->selections[i].buffers =
g_hash_table_new_full (NULL, NULL, NULL,
(GDestroyNotify) selection_buffer_cancel_and_unref);
}
selection->offers =
g_hash_table_new_full (NULL, NULL, NULL,
(GDestroyNotify) data_offer_data_free);
selection->stored_selection.fd = -1;
selection->source_targets = g_array_new (FALSE, FALSE, sizeof (GdkAtom));
return selection;
}
void
gdk_wayland_selection_free (GdkWaylandSelection *selection)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (selection->selections); i++)
g_hash_table_destroy (selection->selections[i].buffers);
g_array_unref (selection->source_targets);
g_hash_table_destroy (selection->offers);
g_free (selection->stored_selection.data);
if (selection->stored_selection.cancellable)
{
g_cancellable_cancel (selection->stored_selection.cancellable);
g_object_unref (selection->stored_selection.cancellable);
}
if (selection->stored_selection.fd > 0)
close (selection->stored_selection.fd);
if (selection->dnd_source)
wl_data_source_destroy (selection->dnd_source);
g_free (selection);
}
static void
data_offer_offer (void *data,
struct wl_data_offer *wl_data_offer,
const char *type)
{
GdkWaylandSelection *selection = data;
GdkContentFormatsBuilder *builder;
DataOfferData *info;
info = g_hash_table_lookup (selection->offers, wl_data_offer);
if (!info || gdk_content_formats_contain_mime_type (info->targets, type))
return;
GDK_NOTE (EVENTS,
g_message ("data offer offer, offer %p, type = %s", wl_data_offer, type));
builder = gdk_content_formats_builder_new ();
gdk_content_formats_builder_add_formats (builder, info->targets);
gdk_content_formats_builder_add_mime_type (builder, type);
gdk_content_formats_unref (info->targets);
info->targets = gdk_content_formats_builder_free (builder);
}
static inline GdkDragAction
_wl_to_gdk_actions (uint32_t dnd_actions)
{
GdkDragAction actions = 0;
if (dnd_actions & WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY)
actions |= GDK_ACTION_COPY;
if (dnd_actions & WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE)
actions |= GDK_ACTION_MOVE;
if (dnd_actions & WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK)
actions |= GDK_ACTION_ASK;
return actions;
}
static void
data_offer_source_actions (void *data,
struct wl_data_offer *wl_data_offer,
uint32_t source_actions)
{
GdkDragContext *drop_context;
GdkDisplay *display;
GdkDevice *device;
GdkSeat *seat;
display = gdk_display_get_default ();
seat = gdk_display_get_default_seat (display);
device = gdk_seat_get_pointer (seat);
drop_context = gdk_wayland_device_get_drop_context (device);
drop_context->actions = _wl_to_gdk_actions (source_actions);
GDK_NOTE (EVENTS,
g_message ("data offer source actions, offer %p, actions %d", wl_data_offer, source_actions));
if (gdk_drag_context_get_dest_window (drop_context))
_gdk_wayland_drag_context_emit_event (drop_context, GDK_DRAG_MOTION,
GDK_CURRENT_TIME);
}
static void
data_offer_action (void *data,
struct wl_data_offer *wl_data_offer,
uint32_t action)
{
GdkDragContext *drop_context;
GdkDisplay *display;
GdkDevice *device;
GdkSeat *seat;
display = gdk_display_get_default ();
seat = gdk_display_get_default_seat (display);
device = gdk_seat_get_pointer (seat);
drop_context = gdk_wayland_device_get_drop_context (device);
drop_context->action = _wl_to_gdk_actions (action);
if (gdk_drag_context_get_dest_window (drop_context))
_gdk_wayland_drag_context_emit_event (drop_context, GDK_DRAG_MOTION,
GDK_CURRENT_TIME);
}
static const struct wl_data_offer_listener data_offer_listener = {
data_offer_offer,
data_offer_source_actions,
data_offer_action
};
static SelectionData *
selection_lookup_offer_by_atom (GdkWaylandSelection *selection,
GdkAtom selection_atom)
{
if (selection_atom == atoms[ATOM_DND])
return &selection->selections[ATOM_DND];
else
return NULL;
}
void
gdk_wayland_selection_ensure_offer (GdkDisplay *display,
struct wl_data_offer *wl_offer)
{
GdkWaylandSelection *selection = gdk_wayland_display_get_selection (display);
DataOfferData *info;
info = g_hash_table_lookup (selection->offers, wl_offer);
if (!info)
{
info = data_offer_data_new (wl_offer,
(GDestroyNotify) wl_data_offer_destroy);
g_hash_table_insert (selection->offers, wl_offer, info);
wl_data_offer_add_listener (wl_offer,
&data_offer_listener,
selection);
}
}
GdkContentFormats *
gdk_wayland_selection_steal_offer (GdkDisplay *display,
gpointer wl_offer)
{
GdkWaylandSelection *selection = gdk_wayland_display_get_selection (display);
GdkContentFormats *formats;
DataOfferData *info;
info = g_hash_table_lookup (selection->offers, wl_offer);
if (info == NULL)
return NULL;
g_hash_table_steal (selection->offers, wl_offer);
formats = info->targets;
g_slice_free (DataOfferData, info);
return formats;
}
void
gdk_wayland_selection_set_offer (GdkDisplay *display,
GdkAtom selection_atom,
gpointer wl_offer)
{
GdkWaylandSelection *selection = gdk_wayland_display_get_selection (display);
struct wl_data_offer *prev_offer;
SelectionData *selection_data;
DataOfferData *info;
info = g_hash_table_lookup (selection->offers, wl_offer);
prev_offer = gdk_wayland_selection_get_offer (display, selection_atom);
if (prev_offer)
g_hash_table_remove (selection->offers, prev_offer);
selection_data = selection_lookup_offer_by_atom (selection, selection_atom);
if (selection_data)
{
selection_data->offer = info;
/* Clear all buffers */
g_hash_table_remove_all (selection_data->buffers);
}
}
gpointer
gdk_wayland_selection_get_offer (GdkDisplay *display,
GdkAtom selection_atom)
{
GdkWaylandSelection *selection = gdk_wayland_display_get_selection (display);
const SelectionData *data;
data = selection_lookup_offer_by_atom (selection, selection_atom);
if (data && data->offer)
return data->offer->offer_data;
return NULL;
}
GdkContentFormats *
gdk_wayland_selection_get_targets (GdkDisplay *display,
GdkAtom selection_atom)
{
GdkWaylandSelection *selection = gdk_wayland_display_get_selection (display);
const SelectionData *data;
data = selection_lookup_offer_by_atom (selection, selection_atom);
if (data && data->offer)
return data->offer->targets;
return NULL;
}
static void
gdk_wayland_selection_emit_request (GdkWindow *window,
GdkAtom selection,
GdkAtom target)
{
GdkEvent *event;
event = gdk_event_new (GDK_SELECTION_REQUEST);
event->selection.window = g_object_ref (window);
event->selection.send_event = FALSE;
event->selection.selection = selection;
event->selection.target = target;
event->selection.property = gdk_atom_intern_static_string ("GDK_SELECTION");
event->selection.time = GDK_CURRENT_TIME;
event->selection.requestor = g_object_ref (window);
gdk_event_put (event);
gdk_event_free (event);
}
static AsyncWriteData *
async_write_data_new (GdkWaylandSelection *selection)
{
AsyncWriteData *write_data;
write_data = g_slice_new0 (AsyncWriteData);
write_data->selection = selection;
write_data->stream =
g_unix_output_stream_new (selection->stored_selection.fd, TRUE);
selection->stored_selection.fd = -1;
return write_data;
}
static void
async_write_data_free (AsyncWriteData *write_data)
{
g_object_unref (write_data->stream);
g_slice_free (AsyncWriteData, write_data);
}
static void
async_write_data_cb (GObject *object,
GAsyncResult *res,
gpointer user_data)
{
AsyncWriteData *write_data = user_data;
GError *error = NULL;
gsize bytes_written;
bytes_written = g_output_stream_write_finish (G_OUTPUT_STREAM (object),
res, &error);
if (error)
{
if (error->domain != G_IO_ERROR ||
error->code != G_IO_ERROR_CANCELLED)
g_warning ("Error writing selection data: %s", error->message);
g_error_free (error);
async_write_data_free (write_data);
return;
}
write_data->index += bytes_written;
if (write_data->index <
write_data->selection->stored_selection.data_len)
{
/* Write the next chunk */
async_write_data_write (write_data);
}
else
async_write_data_free (write_data);
}
static void
async_write_data_write (AsyncWriteData *write_data)
{
GdkWaylandSelection *selection = write_data->selection;
gsize buf_len;
guchar *buf;
buf = selection->stored_selection.data;
buf_len = selection->stored_selection.data_len;
g_output_stream_write_async (write_data->stream,
&buf[write_data->index],
buf_len - write_data->index,
G_PRIORITY_DEFAULT,
selection->stored_selection.cancellable,
async_write_data_cb,
write_data);
}
static gboolean
gdk_wayland_selection_check_write (GdkWaylandSelection *selection)
{
AsyncWriteData *write_data;
if (selection->stored_selection.fd < 0)
return FALSE;
/* Cancel any previous ongoing async write */
if (selection->stored_selection.cancellable)
{
g_cancellable_cancel (selection->stored_selection.cancellable);
g_object_unref (selection->stored_selection.cancellable);
}
selection->stored_selection.cancellable = g_cancellable_new ();
write_data = async_write_data_new (selection);
async_write_data_write (write_data);
selection->stored_selection.fd = -1;
return TRUE;
}
void
gdk_wayland_selection_store (GdkWindow *window,
GdkAtom type,
GdkPropMode mode,
const guchar *data,
gint len)
{
GdkDisplay *display = gdk_window_get_display (window);
GdkWaylandSelection *selection = gdk_wayland_display_get_selection (display);
GArray *array;
if (type == gdk_atom_intern_static_string ("NULL"))
return;
array = g_array_new (TRUE, FALSE, sizeof (guchar));
g_array_append_vals (array, data, len);
if (selection->stored_selection.data)
{
if (mode != GDK_PROP_MODE_REPLACE &&
type != selection->stored_selection.type)
{
gchar *type_str, *stored_str;
type_str = gdk_atom_name (type);
stored_str = gdk_atom_name (selection->stored_selection.type);
g_warning (G_STRLOC ": Attempted to append/prepend selection data with "
"type %s into the current selection with type %s",
type_str, stored_str);
g_free (type_str);
g_free (stored_str);
return;
}
/* In these cases we also replace the stored data, so we
* apply the inverse operation into the just given data.
*/
if (mode == GDK_PROP_MODE_APPEND)
g_array_prepend_vals (array, selection->stored_selection.data,
selection->stored_selection.data_len - 1);
else if (mode == GDK_PROP_MODE_PREPEND)
g_array_append_vals (array, selection->stored_selection.data,
selection->stored_selection.data_len - 1);
g_free (selection->stored_selection.data);
}
selection->stored_selection.source = window;
selection->stored_selection.data_len = array->len;
selection->stored_selection.data = (guchar *) g_array_free (array, FALSE);
selection->stored_selection.type = type;
gdk_wayland_selection_check_write (selection);
}
static SelectionBuffer *
gdk_wayland_selection_lookup_requestor_buffer (GdkWindow *requestor)
{
GdkDisplay *display = gdk_window_get_display (requestor);
GdkWaylandSelection *selection = gdk_wayland_display_get_selection (display);
SelectionBuffer *buffer_data;
GHashTableIter iter;
gint i;
for (i = 0; i < G_N_ELEMENTS (selection->selections); i++)
{
g_hash_table_iter_init (&iter, selection->selections[i].buffers);
while (g_hash_table_iter_next (&iter, NULL, (gpointer*) &buffer_data))
{
if (g_list_find (buffer_data->requestors, requestor))
return buffer_data;
}
}
return NULL;
}
static gboolean
gdk_wayland_selection_source_handles_target (GdkWaylandSelection *wayland_selection,
GdkAtom target)
{
GdkAtom atom;
guint i;
if (target == NULL)
return FALSE;
for (i = 0; i < wayland_selection->source_targets->len; i++)
{
atom = g_array_index (wayland_selection->source_targets, GdkAtom, i);
if (atom == target)
return TRUE;
}
return FALSE;
}
static gboolean
gdk_wayland_selection_request_target (GdkWaylandSelection *wayland_selection,
GdkWindow *window,
GdkAtom selection,
GdkAtom target,
gint fd)
{
if (wayland_selection->stored_selection.fd == fd &&
wayland_selection->requested_target == target)
return FALSE;
/* If we didn't issue gdk_wayland_selection_check_write() yet
* on a previous fd, it will still linger here. Just close it,
* as we can't have more than one fd on the fly.
*/
if (wayland_selection->stored_selection.fd >= 0)
close (wayland_selection->stored_selection.fd);
wayland_selection->stored_selection.fd = fd;
wayland_selection->requested_target = target;
if (window &&
gdk_wayland_selection_source_handles_target (wayland_selection, target))
{
gdk_wayland_selection_emit_request (window, selection, target);
return TRUE;
}
else
{
close (fd);
wayland_selection->stored_selection.fd = -1;
}
return FALSE;
}
static void
data_source_target (void *data,
struct wl_data_source *source,
const char *mime_type)
{
GDK_NOTE (EVENTS,
g_message ("data source target, source = %p, mime_type = %s",
source, mime_type));
}
static void
data_source_send (void *data,
struct wl_data_source *source,
const char *mime_type,
int32_t fd)
{
GdkWaylandSelection *wayland_selection = data;
GdkWindow *window;
GdkAtom selection;
GDK_NOTE (EVENTS,
g_message ("data source send, source = %p, mime_type = %s, fd = %d",
source, mime_type, fd));
if (!mime_type)
{
close (fd);
return;
}
if (source == wayland_selection->dnd_source)
{
window = wayland_selection->dnd_owner;
selection = atoms[ATOM_DND];
}
else
{
close (fd);
return;
}
if (!window)
return;
if (!gdk_wayland_selection_request_target (wayland_selection, window,
selection,
gdk_atom_intern (mime_type, FALSE),
fd))
gdk_wayland_selection_check_write (wayland_selection);
}
static void
data_source_cancelled (void *data,
struct wl_data_source *source)
{
GdkWaylandSelection *wayland_selection = data;
GdkDragContext *context;
GdkDisplay *display;
GdkAtom atom;
GDK_NOTE (EVENTS,
g_message ("data source cancelled, source = %p", source));
display = gdk_display_get_default ();
if (source == wayland_selection->dnd_source)
atom = atoms[ATOM_DND];
else
return;
context = gdk_wayland_drag_context_lookup_by_data_source (source);
if (context)
gdk_drag_context_cancel (context, GDK_DRAG_CANCEL_ERROR);
emit_selection_clear (display, atom);
gdk_selection_owner_set (NULL, atom, GDK_CURRENT_TIME, TRUE);
gdk_wayland_selection_unset_data_source (display, atom);
}
static void
data_source_dnd_drop_performed (void *data,
struct wl_data_source *source)
{
GdkDragContext *context;
context = gdk_wayland_drag_context_lookup_by_data_source (source);
if (!context)
return;
g_signal_emit_by_name (context, "drop-performed", GDK_CURRENT_TIME);
}
static void
data_source_dnd_finished (void *data,
struct wl_data_source *source)
{
GdkDisplay *display = gdk_display_get_default ();
GdkDragContext *context;
context = gdk_wayland_drag_context_lookup_by_data_source (source);
if (!context)
return;
if (context->action == GDK_ACTION_MOVE)
{
gdk_wayland_selection_emit_request (context->source_window,
atoms[ATOM_DND],
gdk_atom_intern_static_string ("DELETE"));
}
g_signal_emit_by_name (context, "dnd-finished");
gdk_selection_owner_set (NULL, atoms[ATOM_DND], GDK_CURRENT_TIME, TRUE);
gdk_wayland_display_clear_selection_targets (display, atoms[ATOM_DND]);
}
static void
data_source_action (void *data,
struct wl_data_source *source,
uint32_t action)
{
GdkDragContext *context;
GDK_NOTE (EVENTS,
g_message ("data source action, source = %p action=%x",
source, action));
context = gdk_wayland_drag_context_lookup_by_data_source (source);
if (!context)
return;
context->action = _wl_to_gdk_actions (action);
g_signal_emit_by_name (context, "action-changed", context->action);
}
static const struct wl_data_source_listener data_source_listener = {
data_source_target,
data_source_send,
data_source_cancelled,
data_source_dnd_drop_performed,
data_source_dnd_finished,
data_source_action,
};
struct wl_data_source *
gdk_wayland_selection_get_data_source (GdkWindow *owner,
GdkAtom selection)
{
GdkDisplay *display = gdk_window_get_display (owner);
GdkWaylandSelection *wayland_selection = gdk_wayland_display_get_selection (display);
gpointer source = NULL;
GdkWaylandDisplay *display_wayland;
if (selection == atoms[ATOM_DND])
{
if (wayland_selection->dnd_source &&
(!owner || owner == wayland_selection->dnd_owner))
return wayland_selection->dnd_source;
}
else
return NULL;
if (!owner)
return NULL;
display_wayland = GDK_WAYLAND_DISPLAY (gdk_window_get_display (owner));
source = wl_data_device_manager_create_data_source (display_wayland->data_device_manager);
wl_data_source_add_listener (source,
&data_source_listener,
wayland_selection);
if (selection == atoms[ATOM_DND])
wayland_selection->dnd_source = source;
return source;
}
void
gdk_wayland_selection_unset_data_source (GdkDisplay *display,
GdkAtom selection)
{
GdkWaylandSelection *wayland_selection = gdk_wayland_display_get_selection (display);
if (selection == atoms[ATOM_DND])
{
wayland_selection->dnd_source = NULL;
}
}
GdkWindow *
_gdk_wayland_display_get_selection_owner (GdkDisplay *display,
GdkAtom selection)
{
GdkWaylandSelection *wayland_selection = gdk_wayland_display_get_selection (display);
if (selection == atoms[ATOM_DND])
return wayland_selection->dnd_owner;
return NULL;
}
gboolean
_gdk_wayland_display_set_selection_owner (GdkDisplay *display,
GdkWindow *owner,
GdkAtom selection,
guint32 time,
gboolean send_event)
{
GdkWaylandSelection *wayland_selection = gdk_wayland_display_get_selection (display);
if (selection == atoms[ATOM_DND])
{
wayland_selection->dnd_owner = owner;
return TRUE;
}
return FALSE;
}
void
_gdk_wayland_display_send_selection_notify (GdkDisplay *dispay,
GdkWindow *requestor,
GdkAtom selection,
GdkAtom target,
GdkAtom property,
guint32 time)
{
}
gint
_gdk_wayland_display_get_selection_property (GdkDisplay *display,
GdkWindow *requestor,
guchar **data,
GdkAtom *ret_type,
gint *ret_format)
{
SelectionBuffer *buffer_data;
gsize len;
buffer_data = gdk_wayland_selection_lookup_requestor_buffer (requestor);
if (!buffer_data)
return 0;
selection_buffer_remove_requestor (buffer_data, requestor);
len = buffer_data->data->len;
if (data)
{
guchar *buffer;
buffer = g_new0 (guchar, len + 1);
memcpy (buffer, buffer_data->data->data, len);
*data = buffer;
}
if (buffer_data->target == gdk_atom_intern_static_string ("TARGETS"))
{
if (ret_type)
*ret_type = GDK_SELECTION_TYPE_ATOM;
if (ret_format)
*ret_format = 32;
}
else
{
if (ret_type)
*ret_type = buffer_data->target;
if (ret_format)
*ret_format = 8;
}
return len;
}
static void
emit_empty_selection_notify (GdkWindow *requestor,
GdkAtom selection,
GdkAtom target)
{
GdkEvent *event;
event = gdk_event_new (GDK_SELECTION_NOTIFY);
event->selection.window = g_object_ref (requestor);
event->selection.send_event = FALSE;
event->selection.selection = selection;
event->selection.target = target;
event->selection.property = NULL;
event->selection.time = GDK_CURRENT_TIME;
event->selection.requestor = g_object_ref (requestor);
gdk_event_put (event);
gdk_event_free (event);
}
static void
emit_selection_clear (GdkDisplay *display,
GdkAtom selection)
{
GdkEvent *event;
GdkWindow *window;
event = gdk_event_new (GDK_SELECTION_CLEAR);
event->selection.selection = selection;
event->selection.time = GDK_CURRENT_TIME;
window = _gdk_wayland_display_get_selection_owner (display, selection);
if (window != NULL)
{
event->selection.window = g_object_ref (window);
event->selection.requestor = g_object_ref (window);
}
gdk_event_put (event);
gdk_event_free (event);
}
void
_gdk_wayland_display_convert_selection (GdkDisplay *display,
GdkWindow *requestor,
GdkAtom selection,
GdkAtom target,
guint32 time)
{
GdkWaylandSelection *wayland_selection = gdk_wayland_display_get_selection (display);
const SelectionData *selection_data;
SelectionBuffer *buffer_data;
gpointer offer;
gchar *mimetype;
GdkContentFormats *formats;
selection_data = selection_lookup_offer_by_atom (wayland_selection, selection);
if (!selection_data)
return;
offer = gdk_wayland_selection_get_offer (display, selection);
formats = gdk_wayland_selection_get_targets (display, selection);
if (!offer || target == gdk_atom_intern_static_string ("DELETE"))
{
emit_empty_selection_notify (requestor, selection, target);
return;
}
mimetype = gdk_atom_name (target);
if (target != gdk_atom_intern_static_string ("TARGETS"))
{
if (!gdk_content_formats_contain_mime_type (formats, GDK_ATOM_TO_POINTER (target)))
{
emit_empty_selection_notify (requestor, selection, target);
return;
}
wl_data_offer_accept (offer,
_gdk_wayland_display_get_serial (GDK_WAYLAND_DISPLAY (display)),
mimetype);
}
buffer_data = g_hash_table_lookup (selection_data->buffers, target);
if (buffer_data)
selection_buffer_add_requestor (buffer_data, requestor);
else
{
GInputStream *stream = NULL;
int pipe_fd[2];
gsize n_targets = 0;
const char * const *targets = NULL;
if (target == gdk_atom_intern_static_string ("TARGETS"))
{
targets = gdk_content_formats_get_mime_types (formats, &n_targets);
}
else
{
g_unix_open_pipe (pipe_fd, FD_CLOEXEC, NULL);
wl_data_offer_receive (offer, mimetype, pipe_fd[1]);
stream = g_unix_input_stream_new (pipe_fd[0], TRUE);
close (pipe_fd[1]);
}
buffer_data = selection_buffer_new (stream, selection, target);
selection_buffer_add_requestor (buffer_data, requestor);
if (stream)
g_object_unref (stream);
if (targets)
{
/* Store directly the local atoms */
selection_buffer_append_data (buffer_data, targets, n_targets * sizeof (const char * const *));
}
g_hash_table_insert (selection_data->buffers,
GDK_ATOM_TO_POINTER (target),
buffer_data);
}
if (!buffer_data->stream)
selection_buffer_notify (buffer_data);
g_free (mimetype);
}
gint
_gdk_wayland_display_text_property_to_utf8_list (GdkDisplay *display,
GdkAtom encoding,
gint format,
const guchar *text,
gint length,
gchar ***list)
{
GPtrArray *array;
const gchar *ptr;
gsize chunk_len;
gchar *copy;
guint nitems;
ptr = (const gchar *) text;
array = g_ptr_array_new ();
while (ptr < (const gchar *) &text[length])
{
chunk_len = strlen (ptr);
if (g_utf8_validate (ptr, chunk_len, NULL))
{
copy = g_strndup (ptr, chunk_len);
g_ptr_array_add (array, copy);
}
ptr = &ptr[chunk_len + 1];
}
nitems = array->len;
g_ptr_array_add (array, NULL);
if (list)
*list = (gchar **) g_ptr_array_free (array, FALSE);
else
g_ptr_array_free (array, TRUE);
return nitems;
}
/* This function has been copied straight from the x11 backend */
static gchar *
sanitize_utf8 (const gchar *src,
gboolean return_latin1)
{
gint len = strlen (src);
GString *result = g_string_sized_new (len);
const gchar *p = src;
while (*p)
{
if (*p == '\r')
{
p++;
if (*p == '\n')
p++;
g_string_append_c (result, '\n');
}
else
{
gunichar ch = g_utf8_get_char (p);
if (!((ch < 0x20 && ch != '\t' && ch != '\n') || (ch >= 0x7f && ch < 0xa0)))
{
if (return_latin1)
{
if (ch <= 0xff)
g_string_append_c (result, ch);
else
g_string_append_printf (result,
ch < 0x10000 ? "\\u%04x" : "\\U%08x",
ch);
}
else
{
char buf[7];
gint buflen;
buflen = g_unichar_to_utf8 (ch, buf);
g_string_append_len (result, buf, buflen);
}
}
p = g_utf8_next_char (p);
}
}
return g_string_free (result, FALSE);
}
gchar *
_gdk_wayland_display_utf8_to_string_target (GdkDisplay *display,
const gchar *str)
{
/* This is mainly needed when interfacing with old clients through
* Xwayland, the STRING target could be used, and passed as-is
* by the compositor.
*
* There's already some handling of this atom (aka "mimetype" in
* this backend) in common code, so we end up in this vfunc.
*/
return sanitize_utf8 (str, TRUE);
}
void
gdk_wayland_display_add_selection_targets (GdkDisplay *display,
GdkWindow *window,
GdkAtom selection,
GdkAtom *targets,
guint ntargets)
{
GdkWaylandSelection *wayland_selection = gdk_wayland_display_get_selection (display);
gpointer data_source;
guint i;
g_return_if_fail (GDK_IS_WINDOW (window));
data_source = gdk_wayland_selection_get_data_source (window, selection);
if (!data_source)
return;
g_array_append_vals (wayland_selection->source_targets, targets, ntargets);
for (i = 0; i < ntargets; i++)
{
gchar *mimetype = gdk_atom_name (targets[i]);
wl_data_source_offer (data_source, mimetype);
g_free (mimetype);
}
}
void
gdk_wayland_display_clear_selection_targets (GdkDisplay *display,
GdkAtom selection)
{
GdkWaylandSelection *wayland_selection = gdk_wayland_display_get_selection (display);
wayland_selection->requested_target = NULL;
g_array_set_size (wayland_selection->source_targets, 0);
gdk_wayland_selection_unset_data_source (display, selection);
}
gboolean
gdk_wayland_selection_set_current_offer_actions (GdkDisplay *display,
uint32_t action)
{
GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
struct wl_data_offer *offer;
uint32_t all_actions = 0;
offer = gdk_wayland_selection_get_offer (display, atoms[ATOM_DND]);
if (!offer)
return FALSE;
if (action != 0)
all_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY |
WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE |
WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK;
if (display_wayland->data_device_manager_version >=
WL_DATA_OFFER_SET_ACTIONS_SINCE_VERSION)
wl_data_offer_set_actions (offer, all_actions, action);
return TRUE;
}
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