int guacenc_handle_rect(guacenc_display* display, int argc, char** argv) {
/* Verify argument count */
if (argc < 5) {
guacenc_log(GUAC_LOG_WARNING, "\"rect\" instruction incomplete");
return 1;
}
/* Parse arguments */
int index = atoi(argv[0]);
int x = atoi(argv[1]);
int y = atoi(argv[2]);
int width = atoi(argv[3]);
int height = atoi(argv[4]);
/* Pull buffer of requested layer/buffer */
guacenc_buffer* buffer = guacenc_display_get_related_buffer(display, index);
if (buffer == NULL)
return 1;
/* Expand the buffer as necessary to fit the draw operation */
if (buffer->autosize)
guacenc_buffer_fit(buffer, x + width, y + height);
/* Set path to rectangle */
if (buffer->cairo != NULL)
cairo_rectangle(buffer->cairo, x, y, width, height);
return 0;
}
int guacenc_handle_cfill(guacenc_display* display, int argc, char** argv) {
/* Verify argument count */
if (argc < 6) {
guacenc_log(GUAC_LOG_WARNING, "\"cfill\" instruction incomplete");
return 1;
}
/* Parse arguments */
int mask = atoi(argv[0]);
int index = atoi(argv[1]);
double r = atoi(argv[2]) / 255.0;
double g = atoi(argv[3]) / 255.0;
double b = atoi(argv[4]) / 255.0;
double a = atoi(argv[5]) / 255.0;
/* Pull buffer of requested layer/buffer */
guacenc_buffer* buffer = guacenc_display_get_related_buffer(display, index);
if (buffer == NULL)
return 1;
/* Fill with RGBA color */
if (buffer->cairo != NULL) {
cairo_set_operator(buffer->cairo, guacenc_display_cairo_operator(mask));
cairo_set_source_rgba(buffer->cairo, r, g, b, a);
cairo_fill(buffer->cairo);
}
return 0;
}
int guacenc_handle_size(guacenc_display* display, int argc, char** argv) {
/* Verify argument count */
if (argc < 3) {
guacenc_log(GUAC_LOG_WARNING, "\"size\" instruction incomplete");
return 1;
}
/* Parse arguments */
int index = atoi(argv[0]);
int width = atoi(argv[1]);
int height = atoi(argv[2]);
/* Retrieve requested layer/buffer */
guacenc_buffer* buffer = guacenc_display_get_related_buffer(display, index);
if (buffer == NULL)
return 1;
/* Resize layer/buffer */
return guacenc_buffer_resize(buffer, width, height);
}
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;
}
