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Client-side cursor (initial)

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This commit is contained in:
Michael Jumper
2010-09-07 00:15:36 -07:00
parent 8bd6d947d7
commit a8fac57159
3 changed files with 136 additions and 3 deletions
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64
guacamole/proxy/protocol.c
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@@ -179,6 +179,70 @@ void guac_send_png(GUACIO* io, int x, int y, png_byte** png_rows, int w, int h)
}
void guac_send_cursor(GUACIO* io, int x, int y, png_byte** png_rows, int w, int h) {
png_structp png;
png_infop png_info;
/* Write image */
/* Set up PNG writer */
png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png) {
perror("Error initializing libpng write structure");
return;
}
png_info = png_create_info_struct(png);
if (!png_info) {
perror("Error initializing libpng info structure");
png_destroy_write_struct(&png, NULL);
return;
}
/* Set error handler */
if (setjmp(png_jmpbuf(png))) {
perror("Error setting handler");
png_destroy_write_struct(&png, &png_info);
return;
}
png_set_write_fn(png, io, __guac_write_png, __guac_write_flush);
/* Set PNG IHDR */
png_set_IHDR(
png,
png_info,
w,
h,
8,
PNG_COLOR_TYPE_RGBA,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT
);
guac_write_string(io, "cursor:");
guac_write_int(io, x);
guac_write_string(io, ",");
guac_write_int(io, y);
guac_write_string(io, ",");
png_set_rows(png, png_info, png_rows);
png_write_png(png, png_info, PNG_TRANSFORM_IDENTITY, NULL);
if (guac_flush_base64(io) < 0) {
perror("Error flushing PNG");
png_error(png, "Error flushing PNG");
return;
}
png_destroy_write_struct(&png, &png_info);
guac_write_string(io, ";");
}
int __guac_fill_instructionbuf(GUACIO* io) {
int retval;