guacamole-spice-protocol/src/guacenc/instruction-copy.c

107 lines
3.5 KiB
C

/*
* Copyright (C) 2016 Glyptodon, Inc.
*
* 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 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 "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;
}