instruction-cursor.c (2182B)
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#include "buffer.h" 22#include "cursor.h" 23#include "display.h" 24#include "log.h" 25 26#include <guacamole/client.h> 27 28#include <stdlib.h> 29 30int guacenc_handle_cursor(guacenc_display* display, int argc, char** argv) { 31 32 /* Verify argument count */ 33 if (argc < 7) { 34 guacenc_log(GUAC_LOG_WARNING, "\"cursor\" instruction incomplete"); 35 return 1; 36 } 37 38 /* Parse arguments */ 39 int hotspot_x = atoi(argv[0]); 40 int hotspot_y = atoi(argv[1]); 41 int sindex = atoi(argv[2]); 42 int sx = atoi(argv[3]); 43 int sy = atoi(argv[4]); 44 int width = atoi(argv[5]); 45 int height = atoi(argv[6]); 46 47 /* Pull buffer of source layer/buffer */ 48 guacenc_buffer* src = guacenc_display_get_related_buffer(display, sindex); 49 if (src == NULL) 50 return 1; 51 52 /* Update cursor hotspot */ 53 guacenc_cursor* cursor = display->cursor; 54 cursor->hotspot_x = hotspot_x; 55 cursor->hotspot_y = hotspot_y; 56 57 /* Resize cursor to exactly fit */ 58 guacenc_buffer_resize(cursor->buffer, width, height); 59 60 /* Copy rectangle from source to cursor */ 61 guacenc_buffer* dst = cursor->buffer; 62 if (src->surface != NULL && dst->cairo != NULL) { 63 cairo_set_operator(dst->cairo, CAIRO_OPERATOR_SOURCE); 64 cairo_set_source_surface(dst->cairo, src->surface, sx, sy); 65 cairo_paint(dst->cairo); 66 } 67 68 return 0; 69 70} 71