weston/xwayland/dnd.c
Michael Tretter 48b39d31ef shared: extract hash table implementation from xwayland
The hash table implementation is useful for other modules as well. Move it from
xwayland to the shared code.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
2023-03-03 08:08:46 +00:00

253 lines
6.9 KiB
C

/*
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <X11/Xcursor/Xcursor.h>
#include <libweston/libweston.h>
#include "xwayland.h"
#include "shared/hash.h"
struct dnd_data_source {
struct weston_data_source base;
struct weston_wm *wm;
int version;
uint32_t window;
};
static void
data_source_accept(struct weston_data_source *base,
uint32_t serial, const char *mime_type)
{
struct dnd_data_source *source = (struct dnd_data_source *) base;
xcb_client_message_event_t client_message;
struct weston_wm *wm = source->wm;
weston_log("got accept, mime-type %s\n", mime_type);
/* FIXME: If we rewrote UTF8_STRING to
* text/plain;charset=utf-8 and the source doesn't support the
* mime-type, we'll have to rewrite the mime-type back to
* UTF8_STRING here. */
client_message.response_type = XCB_CLIENT_MESSAGE;
client_message.format = 32;
client_message.window = wm->dnd_window;
client_message.type = wm->atom.xdnd_status;
client_message.data.data32[0] = wm->dnd_window;
client_message.data.data32[1] = 2;
if (mime_type)
client_message.data.data32[1] |= 1;
client_message.data.data32[2] = 0;
client_message.data.data32[3] = 0;
client_message.data.data32[4] = wm->atom.xdnd_action_copy;
xcb_send_event(wm->conn, 0, wm->dnd_owner,
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
(char *) &client_message);
}
static void
data_source_send(struct weston_data_source *base,
const char *mime_type, int32_t fd)
{
struct dnd_data_source *source = (struct dnd_data_source *) base;
struct weston_wm *wm = source->wm;
weston_log("got send, %s\n", mime_type);
/* Get data for the utf8_string target */
xcb_convert_selection(wm->conn,
wm->selection_window,
wm->atom.xdnd_selection,
wm->atom.utf8_string,
wm->atom.wl_selection,
XCB_TIME_CURRENT_TIME);
xcb_flush(wm->conn);
fcntl(fd, F_SETFL, O_WRONLY | O_NONBLOCK);
wm->data_source_fd = fd;
}
static void
data_source_cancel(struct weston_data_source *source)
{
weston_log("got cancel\n");
}
static void
handle_enter(struct weston_wm *wm, xcb_client_message_event_t *client_message)
{
struct dnd_data_source *source;
struct weston_seat *seat = weston_wm_pick_seat(wm);
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
char **p;
const char *name;
uint32_t *types;
int i, length, has_text;
xcb_get_property_cookie_t cookie;
xcb_get_property_reply_t *reply;
source = zalloc(sizeof *source);
if (source == NULL)
return;
wl_signal_init(&source->base.destroy_signal);
source->base.accept = data_source_accept;
source->base.send = data_source_send;
source->base.cancel = data_source_cancel;
source->wm = wm;
source->window = client_message->data.data32[0];
source->version = client_message->data.data32[1] >> 24;
if (client_message->data.data32[1] & 1) {
cookie = xcb_get_property(wm->conn,
0, /* delete */
source->window,
wm->atom.xdnd_type_list,
XCB_ATOM_ANY, 0, 2048);
reply = xcb_get_property_reply(wm->conn, cookie, NULL);
types = xcb_get_property_value(reply);
length = reply->value_len;
} else {
reply = NULL;
types = &client_message->data.data32[2];
length = 3;
}
wl_array_init(&source->base.mime_types);
has_text = 0;
for (i = 0; i < length; i++) {
if (types[i] == XCB_ATOM_NONE)
continue;
name = get_atom_name(wm->conn, types[i]);
if (types[i] == wm->atom.utf8_string ||
types[i] == wm->atom.text_plain_utf8 ||
types[i] == wm->atom.text_plain) {
if (has_text)
continue;
has_text = 1;
p = wl_array_add(&source->base.mime_types, sizeof *p);
if (p)
*p = strdup("text/plain;charset=utf-8");
} else if (strchr(name, '/')) {
p = wl_array_add(&source->base.mime_types, sizeof *p);
if (p)
*p = strdup(name);
}
}
free(reply);
weston_pointer_start_drag(pointer, &source->base, NULL, NULL);
}
int
weston_wm_handle_dnd_event(struct weston_wm *wm,
xcb_generic_event_t *event)
{
xcb_xfixes_selection_notify_event_t *xfixes_selection_notify =
(xcb_xfixes_selection_notify_event_t *) event;
xcb_client_message_event_t *client_message =
(xcb_client_message_event_t *) event;
switch (event->response_type - wm->xfixes->first_event) {
case XCB_XFIXES_SELECTION_NOTIFY:
if (xfixes_selection_notify->selection != wm->atom.xdnd_selection)
return 0;
weston_log("XdndSelection owner: %d!\n",
xfixes_selection_notify->owner);
return 1;
}
switch (EVENT_TYPE(event)) {
case XCB_CLIENT_MESSAGE:
if (client_message->type == wm->atom.xdnd_enter) {
handle_enter(wm, client_message);
return 1;
} else if (client_message->type == wm->atom.xdnd_leave) {
weston_log("got leave!\n");
return 1;
} else if (client_message->type == wm->atom.xdnd_drop) {
weston_log("got drop!\n");
return 1;
}
return 0;
}
return 0;
}
void
weston_wm_dnd_init(struct weston_wm *wm)
{
uint32_t values[1], version = 4, mask;
mask =
XCB_XFIXES_SELECTION_EVENT_MASK_SET_SELECTION_OWNER |
XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_WINDOW_DESTROY |
XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_CLIENT_CLOSE;
xcb_xfixes_select_selection_input(wm->conn, wm->selection_window,
wm->atom.xdnd_selection, mask);
wm->dnd_window = xcb_generate_id(wm->conn);
values[0] =
XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
XCB_EVENT_MASK_PROPERTY_CHANGE;
xcb_create_window(wm->conn,
XCB_COPY_FROM_PARENT,
wm->dnd_window,
wm->screen->root,
0, 0,
8192, 8192,
0,
XCB_WINDOW_CLASS_INPUT_ONLY,
wm->screen->root_visual,
XCB_CW_EVENT_MASK, values);
xcb_change_property(wm->conn,
XCB_PROP_MODE_REPLACE,
wm->dnd_window,
wm->atom.xdnd_aware,
XCB_ATOM_ATOM,
32, /* format */
1, &version);
}