diff options
Diffstat (limited to 'src/3rdparty/xkbcommon/src/x11/util.c')
| -rw-r--r-- | src/3rdparty/xkbcommon/src/x11/util.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/src/3rdparty/xkbcommon/src/x11/util.c b/src/3rdparty/xkbcommon/src/x11/util.c new file mode 100644 index 0000000000..92ff2e630e --- /dev/null +++ b/src/3rdparty/xkbcommon/src/x11/util.c @@ -0,0 +1,215 @@ +/* + * Copyright © 2013 Ran Benita + * + * 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 "x11-priv.h" + +XKB_EXPORT int +xkb_x11_setup_xkb_extension(xcb_connection_t *conn, + uint16_t major_xkb_version, + uint16_t minor_xkb_version, + enum xkb_x11_setup_xkb_extension_flags flags, + uint16_t *major_xkb_version_out, + uint16_t *minor_xkb_version_out, + uint8_t *base_event_out, + uint8_t *base_error_out) +{ + uint8_t base_event, base_error; + uint16_t server_major, server_minor; + + if (flags & ~(XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS)) { + /* log_err_func(ctx, "unrecognized flags: %#x\n", flags); */ + return 0; + } + + { + const xcb_query_extension_reply_t *reply = + xcb_get_extension_data(conn, &xcb_xkb_id); + if (!reply) { + /* log_err_func(ctx, "failed to query for XKB extension\n"); */ + return 0; + } + + if (!reply->present) { + /* log_err_func(ctx, "failed to start using XKB extension: not available in server\n"); */ + return 0; + } + + base_event = reply->first_event; + base_error = reply->first_error; + } + + { + xcb_generic_error_t *error = NULL; + xcb_xkb_use_extension_cookie_t cookie = + xcb_xkb_use_extension(conn, major_xkb_version, minor_xkb_version); + xcb_xkb_use_extension_reply_t *reply = + xcb_xkb_use_extension_reply(conn, cookie, &error); + + if (!reply) { + /* log_err_func(ctx, */ + /* "failed to start using XKB extension: error code %d\n", */ + /* error ? error->error_code : -1); */ + free(error); + return 0; + } + + if (!reply->supported) { + /* log_err_func(ctx, */ + /* "failed to start using XKB extension: server doesn't support version %d.%d\n", */ + /* major_xkb_version, minor_xkb_version); */ + free(reply); + return 0; + } + + server_major = reply->serverMajor; + server_minor = reply->serverMinor; + + free(reply); + } + + /* + * The XkbUseExtension() in libX11 has a *bunch* of legacy stuff, but + * it doesn't seem like any of it is useful to us. + */ + + if (major_xkb_version_out) + *major_xkb_version_out = server_major; + if (minor_xkb_version_out) + *minor_xkb_version_out = server_minor; + if (base_event_out) + *base_event_out = base_event; + if (base_error_out) + *base_error_out = base_error; + + return 1; +} + +XKB_EXPORT int32_t +xkb_x11_get_core_keyboard_device_id(xcb_connection_t *conn) +{ + int32_t device_id; + xcb_xkb_get_device_info_cookie_t cookie = + xcb_xkb_get_device_info(conn, XCB_XKB_ID_USE_CORE_KBD, + 0, 0, 0, 0, 0, 0); + xcb_xkb_get_device_info_reply_t *reply = + xcb_xkb_get_device_info_reply(conn, cookie, NULL); + + if (!reply) + return -1; + + device_id = reply->deviceID; + free(reply); + return device_id; +} + +bool +get_atom_name(xcb_connection_t *conn, xcb_atom_t atom, char **out) +{ + xcb_get_atom_name_cookie_t cookie; + xcb_get_atom_name_reply_t *reply; + int length; + char *name; + + if (atom == 0) { + *out = NULL; + return true; + } + + cookie = xcb_get_atom_name(conn, atom); + reply = xcb_get_atom_name_reply(conn, cookie, NULL); + if (!reply) + return false; + + length = xcb_get_atom_name_name_length(reply); + name = xcb_get_atom_name_name(reply); + + *out = strndup(name, length); + if (!*out) { + free(reply); + return false; + } + + free(reply); + return true; +} + +bool +adopt_atoms(struct xkb_context *ctx, xcb_connection_t *conn, + const xcb_atom_t *from, xkb_atom_t *to, const size_t count) +{ + enum { SIZE = 128 }; + xcb_get_atom_name_cookie_t cookies[SIZE]; + + /* Send and collect the atoms in batches of reasonable SIZE. */ + for (size_t batch = 0; batch <= count / SIZE; batch++) { + const size_t start = batch * SIZE; + const size_t stop = min((batch + 1) * SIZE, count); + + /* Send. */ + for (size_t i = start; i < stop; i++) + if (from[i] != XCB_ATOM_NONE) + cookies[i % SIZE] = xcb_get_atom_name(conn, from[i]); + + /* Collect. */ + for (size_t i = start; i < stop; i++) { + xcb_get_atom_name_reply_t *reply; + + if (from[i] == XCB_ATOM_NONE) { + to[i] = XKB_ATOM_NONE; + continue; + } + + reply = xcb_get_atom_name_reply(conn, cookies[i % SIZE], NULL); + if (!reply) + goto err_discard; + + to[i] = xkb_atom_intern(ctx, + xcb_get_atom_name_name(reply), + xcb_get_atom_name_name_length(reply)); + free(reply); + + if (to[i] == XKB_ATOM_NONE) + goto err_discard; + + continue; + + /* + * If we don't discard the uncollected replies, they just + * sit there waiting. Sad. + */ +err_discard: + for (size_t j = i + 1; j < stop; j++) + xcb_discard_reply(conn, cookies[j].sequence); + return false; + } + } + + return true; +} + +bool +adopt_atom(struct xkb_context *ctx, xcb_connection_t *conn, xcb_atom_t atom, + xkb_atom_t *out) +{ + return adopt_atoms(ctx, conn, &atom, out, 1); +} |