guacamole-spice-protocol/src/guacenc/instruction-copy.c
2016-03-28 20:39:19 -07:00

104 lines
3.2 KiB
C

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "config.h"
#include "display.h"
#include "log.h"
#include <guacamole/client.h>
#include <stdlib.h>
int guacenc_handle_copy(guacenc_display* display, int argc, char** argv) {
/* Verify argument count */
if (argc < 9) {
guacenc_log(GUAC_LOG_WARNING, "\"copy\" instruction incomplete");
return 1;
}
/* Parse arguments */
int sindex = atoi(argv[0]);
int sx = atoi(argv[1]);
int sy = atoi(argv[2]);
int width = atoi(argv[3]);
int height = atoi(argv[4]);
int mask = atoi(argv[5]);
int dindex = atoi(argv[6]);
int dx = atoi(argv[7]);
int dy = atoi(argv[8]);
/* Pull buffer of source layer/buffer */
guacenc_buffer* src = guacenc_display_get_related_buffer(display, sindex);
if (src == NULL)
return 1;
/* Pull buffer of destination layer/buffer */
guacenc_buffer* dst = guacenc_display_get_related_buffer(display, dindex);
if (dst == NULL)
return 1;
/* Expand the destination buffer as necessary to fit the draw operation */
if (dst->autosize)
guacenc_buffer_fit(dst, dx + width, dy + height);
/* Copy rectangle from source to destination */
if (src->surface != NULL && dst->cairo != NULL) {
/* If surfaces are different, no need to copy */
cairo_surface_t* surface;
if (src != dst)
surface = src->surface;
/* Otherwise, copy to a temporary surface */
else {
/* Create new surface to hold the source rect */
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
width, height);
/* Copy relevant rectangle from source surface */
cairo_t* cairo = cairo_create(surface);
cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
cairo_set_source_surface(cairo, src->surface, -sx, -sy);
cairo_paint(cairo);
cairo_destroy(cairo);
/* Source coordinates are now (0, 0) */
sx = sy = 0;
}
/* Perform copy */
cairo_set_operator(dst->cairo, guacenc_display_cairo_operator(mask));
cairo_set_source_surface(dst->cairo, surface, dx - sx, dy - sy);
cairo_rectangle(dst->cairo, dx, dy, width, height);
cairo_fill(dst->cairo);
/* Destroy temporary surface if it was created */
if (surface != src->surface)
cairo_surface_destroy(surface);
}
return 0;
}