xwm: Add support for bridging Xdnd to wayaland DnD

parent 9466e506
......@@ -23,6 +23,7 @@ xwayland_la_SOURCES = \
xwayland.h \
window-manager.c \
selection.c \
dnd.c \
launcher.c \
xserver-protocol.c \
xserver-server-protocol.h \
......
/*
* Copyright © 2013 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "config.h"
#include <stdlib.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 "xwayland.h"
#include "../../shared/cairo-util.h"
#include "../compositor.h"
#include "xserver-server-protocol.h"
#include "hash.h"
static void
weston_dnd_start(struct weston_wm *wm, xcb_window_t owner)
{
uint32_t values[1], version = 4;
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);
xcb_map_window(wm->conn, wm->dnd_window);
wm->dnd_owner = owner;
}
static void
weston_dnd_stop(struct weston_wm *wm)
{
xcb_destroy_window(wm->conn, wm->dnd_window);
wm->dnd_window = XCB_WINDOW_NONE;
}
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 time, 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);
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 = malloc(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_seat_start_drag(seat, &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);
if (xfixes_selection_notify->owner != XCB_WINDOW_NONE)
weston_dnd_start(wm, xfixes_selection_notify->owner);
else
weston_dnd_stop(wm);
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;
} else if (client_message->type == wm->atom.xdnd_drop) {
weston_log("got enter!\n");
return 1;
}
return 0;
}
return 0;
}
void
weston_wm_dnd_init(struct weston_wm *wm)
{
uint32_t 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);
}
......@@ -115,9 +115,6 @@ struct motif_wm_hints {
#define _NET_WM_MOVERESIZE_MOVE_KEYBOARD 10 /* move via keyboard */
#define _NET_WM_MOVERESIZE_CANCEL 11 /* cancel operation */
#define SEND_EVENT_MASK (0x80)
#define EVENT_TYPE(event) ((event)->response_type & ~SEND_EVENT_MASK)
struct weston_wm_window {
struct weston_wm *wm;
xcb_window_t id;
......@@ -1469,6 +1466,12 @@ weston_wm_handle_event(int fd, uint32_t mask, void *data)
continue;
}
if (weston_wm_handle_dnd_event(wm, event)) {
free(event);
count++;
continue;
}
switch (EVENT_TYPE(event)) {
case XCB_BUTTON_PRESS:
case XCB_BUTTON_RELEASE:
......@@ -1615,6 +1618,15 @@ weston_wm_get_resources(struct weston_wm *wm)
{ "STRING", F(atom.string) },
{ "text/plain;charset=utf-8", F(atom.text_plain_utf8) },
{ "text/plain", F(atom.text_plain) },
{ "XdndSelection", F(atom.xdnd_selection) },
{ "XdndAware", F(atom.xdnd_aware) },
{ "XdndEnter", F(atom.xdnd_enter) },
{ "XdndLeave", F(atom.xdnd_leave) },
{ "XdndDrop", F(atom.xdnd_drop) },
{ "XdndStatus", F(atom.xdnd_status) },
{ "XdndFinished", F(atom.xdnd_finished) },
{ "XdndTypeList", F(atom.xdnd_type_list) },
{ "XdndActionCopy", F(atom.xdnd_action_copy) }
};
#undef F
......@@ -1812,6 +1824,8 @@ weston_wm_create(struct weston_xserver *wxs)
weston_wm_selection_init(wm);
weston_wm_dnd_init(wm);
xcb_flush(wm->conn);
wm->activate_listener.notify = weston_wm_window_activate;
......
......@@ -27,6 +27,9 @@
#include "../compositor.h"
#define SEND_EVENT_MASK (0x80)
#define EVENT_TYPE(event) ((event)->response_type & ~SEND_EVENT_MASK)
struct weston_xserver {
struct wl_display *wl_display;
struct wl_event_loop *loop;
......@@ -78,6 +81,9 @@ struct weston_wm {
int flush_property_on_delete;
struct wl_listener selection_listener;
xcb_window_t dnd_window;
xcb_window_t dnd_owner;
struct {
xcb_atom_t wm_protocols;
xcb_atom_t wm_normal_hints;
......@@ -126,6 +132,15 @@ struct weston_wm {
xcb_atom_t string;
xcb_atom_t text_plain_utf8;
xcb_atom_t text_plain;
xcb_atom_t xdnd_selection;
xcb_atom_t xdnd_aware;
xcb_atom_t xdnd_enter;
xcb_atom_t xdnd_leave;
xcb_atom_t xdnd_drop;
xcb_atom_t xdnd_status;
xcb_atom_t xdnd_finished;
xcb_atom_t xdnd_type_list;
xcb_atom_t xdnd_action_copy;
} atom;
};
......@@ -151,3 +166,9 @@ weston_wm_destroy(struct weston_wm *wm);
struct weston_seat *
weston_wm_pick_seat(struct weston_wm *wm);
int
weston_wm_handle_dnd_event(struct weston_wm *wm,
xcb_generic_event_t *event);
void
weston_wm_dnd_init(struct weston_wm *wm);
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