cscg24-guacamole

CSCG 2024 Challenge 'Guacamole Mashup'
git clone https://git.sinitax.com/sinitax/cscg24-guacamole
Log | Files | Refs | sfeed.txt

blank_cursor.c (2364B)

      1/*
      2 * Licensed to the Apache Software Foundation (ASF) under one
      3 * or more contributor license agreements.  See the NOTICE file
      4 * distributed with this work for additional information
      5 * regarding copyright ownership.  The ASF licenses this file
      6 * to you under the Apache License, Version 2.0 (the
      7 * "License"); you may not use this file except in compliance
      8 * with the License.  You may obtain a copy of the License at
      9 *
     10 *   http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing,
     13 * software distributed under the License is distributed on an
     14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     15 * KIND, either express or implied.  See the License for the
     16 * specific language governing permissions and limitations
     17 * under the License.
     18 */
     19
     20#include "config.h"
     21
     22#include <cairo/cairo.h>
     23#include <guacamole/client.h>
     24#include <guacamole/layer.h>
     25#include <guacamole/protocol.h>
     26#include <guacamole/socket.h>
     27#include <guacamole/user.h>
     28
     29/* Dimensions */
     30const int guac_common_blank_cursor_width  = 1;
     31const int guac_common_blank_cursor_height = 1;
     32
     33/* Format */
     34const cairo_format_t guac_common_blank_cursor_format = CAIRO_FORMAT_ARGB32;
     35const int guac_common_blank_cursor_stride = 4;
     36
     37/* Embedded blank cursor graphic */
     38unsigned char guac_common_blank_cursor[] = {
     39
     40    0x00,0x00,0x00,0x00
     41
     42};
     43
     44void guac_common_set_blank_cursor(guac_user* user) {
     45
     46    guac_client* client = user->client;
     47    guac_socket* socket = user->socket;
     48
     49    /* Draw to buffer */
     50    guac_layer* cursor = guac_client_alloc_buffer(client);
     51
     52    cairo_surface_t* graphic = cairo_image_surface_create_for_data(
     53            guac_common_blank_cursor,
     54            guac_common_blank_cursor_format,
     55            guac_common_blank_cursor_width,
     56            guac_common_blank_cursor_height,
     57            guac_common_blank_cursor_stride);
     58
     59    guac_user_stream_png(user, socket, GUAC_COMP_SRC, cursor,
     60            0, 0, graphic);
     61    cairo_surface_destroy(graphic);
     62
     63    /* Set cursor */
     64    guac_protocol_send_cursor(socket, 0, 0, cursor, 0, 0,
     65            guac_common_blank_cursor_width,
     66            guac_common_blank_cursor_height);
     67
     68    /* Free buffer */
     69    guac_client_free_buffer(client, cursor);
     70
     71    guac_client_log(client, GUAC_LOG_DEBUG,
     72            "Client cursor image set to generic transparent (blank) cursor.");
     73
     74}
     75