883 lines
32 KiB
C
883 lines
32 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is libguac.
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*
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* The Initial Developer of the Original Code is
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* Michael Jumper.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _GUAC_PROTOCOL_H
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#define _GUAC_PROTOCOL_H
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#include <cairo/cairo.h>
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#include "socket.h"
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/**
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* Provides functions and structures required for communicating using the
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* Guacamole protocol over a guac_socket connection, such as that provided by
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* guac_client objects.
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*
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* @file protocol.h
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*/
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/**
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* An arbitrary timestamp denoting a relative time value in milliseconds.
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*/
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typedef int64_t guac_timestamp;
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/**
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* Composite modes used by Guacamole draw instructions. Each
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* composite mode maps to a unique channel mask integer.
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*/
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typedef enum guac_composite_mode {
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/*
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* A: Source where destination transparent = S n D'
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* B: Source where destination opaque = S n D
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* C: Destination where source transparent = D n S'
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* D: Destination where source opaque = D n S
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*
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* 0 = Active, 1 = Inactive
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*/
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/* ABCD */
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GUAC_COMP_ROUT = 0x2, /* 0010 - Clears destination where source opaque */
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GUAC_COMP_ATOP = 0x6, /* 0110 - Fill where destination opaque only */
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GUAC_COMP_XOR = 0xA, /* 1010 - XOR */
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GUAC_COMP_ROVER = 0xB, /* 1011 - Fill where destination transparent only */
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GUAC_COMP_OVER = 0xE, /* 1110 - Draw normally */
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GUAC_COMP_PLUS = 0xF, /* 1111 - Add */
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/* Unimplemented in client: */
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/* NOT IMPLEMENTED: 0000 - Clear */
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/* NOT IMPLEMENTED: 0011 - No operation */
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/* NOT IMPLEMENTED: 0101 - Additive IN */
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/* NOT IMPLEMENTED: 0111 - Additive ATOP */
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/* NOT IMPLEMENTED: 1101 - Additive RATOP */
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/* Buggy in webkit browsers, as they keep channel C on in all cases: */
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GUAC_COMP_RIN = 0x1, /* 0001 */
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GUAC_COMP_IN = 0x4, /* 0100 */
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GUAC_COMP_OUT = 0x8, /* 1000 */
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GUAC_COMP_RATOP = 0x9, /* 1001 */
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GUAC_COMP_SRC = 0xC /* 1100 */
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/* Bitwise composite operations (binary) */
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/*
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* A: S' & D'
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* B: S' & D
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* C: S & D'
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* D: S & D
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*
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* 0 = Active, 1 = Inactive
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*/
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} guac_composite_mode;
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/**
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* Default transfer functions. There is no current facility in the
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* Guacamole protocol to define custom transfer functions.
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*/
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typedef enum guac_transfer_function {
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/* Constant functions */ /* ABCD */
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GUAC_TRANSFER_BINARY_BLACK = 0x0, /* 0000 */
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GUAC_TRANSFER_BINARY_WHITE = 0xF, /* 1111 */
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/* Copy functions */
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GUAC_TRANSFER_BINARY_SRC = 0x3, /* 0011 */
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GUAC_TRANSFER_BINARY_DEST = 0x5, /* 0101 */
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GUAC_TRANSFER_BINARY_NSRC = 0xC, /* 1100 */
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GUAC_TRANSFER_BINARY_NDEST = 0xA, /* 1010 */
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/* AND / NAND */
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GUAC_TRANSFER_BINARY_AND = 0x1, /* 0001 */
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GUAC_TRANSFER_BINARY_NAND = 0xE, /* 1110 */
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/* OR / NOR */
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GUAC_TRANSFER_BINARY_OR = 0x7, /* 0111 */
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GUAC_TRANSFER_BINARY_NOR = 0x8, /* 1000 */
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/* XOR / XNOR */
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GUAC_TRANSFER_BINARY_XOR = 0x6, /* 0110 */
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GUAC_TRANSFER_BINARY_XNOR = 0x9, /* 1001 */
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/* AND / NAND with inverted source */
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GUAC_TRANSFER_BINARY_NSRC_AND = 0x4, /* 0100 */
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GUAC_TRANSFER_BINARY_NSRC_NAND = 0xB, /* 1011 */
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/* OR / NOR with inverted source */
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GUAC_TRANSFER_BINARY_NSRC_OR = 0xD, /* 1101 */
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GUAC_TRANSFER_BINARY_NSRC_NOR = 0x2, /* 0010 */
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/* AND / NAND with inverted destination */
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GUAC_TRANSFER_BINARY_NDEST_AND = 0x2, /* 0010 */
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GUAC_TRANSFER_BINARY_NDEST_NAND = 0xD, /* 1101 */
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/* OR / NOR with inverted destination */
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GUAC_TRANSFER_BINARY_NDEST_OR = 0xB, /* 1011 */
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GUAC_TRANSFER_BINARY_NDEST_NOR = 0x4 /* 0100 */
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} guac_transfer_function;
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/**
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* Supported line cap styles
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*/
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typedef enum guac_line_cap_style {
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GUAC_LINE_CAP_BUTT = 0x0,
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GUAC_LINE_CAP_ROUND = 0x1,
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GUAC_LINE_CAP_SQUARE = 0x2
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} guac_line_cap_style;
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/**
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* Supported line join styles
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*/
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typedef enum guac_line_join_style {
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GUAC_LINE_JOIN_BEVEL = 0x0,
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GUAC_LINE_JOIN_MITER = 0x1,
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GUAC_LINE_JOIN_ROUND = 0x2
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} guac_line_join_style;
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typedef struct guac_layer guac_layer;
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/**
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* Represents a single layer within the Guacamole protocol.
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*/
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struct guac_layer {
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/**
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* The index of this layer.
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*/
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int index;
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/**
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* The URI which must be passed via a resource instruction to denote
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* a resource related to this layer. This value is automatically set
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* upon allocation.
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*/
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char* uri;
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/**
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* The next allocated layer in the list of all layers.
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*/
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guac_layer* __next;
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/**
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* The next available (unused) layer in the list of
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* allocated but free'd layers.
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*/
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guac_layer* __next_available;
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};
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/**
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* Represents a single instruction within the Guacamole protocol.
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*/
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typedef struct guac_instruction {
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/**
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* The opcode of the instruction.
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*/
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char* opcode;
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/**
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* The number of arguments passed to this instruction.
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*/
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int argc;
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/**
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* Array of all arguments passed to this instruction.
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*/
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char** argv;
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} guac_instruction;
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/**
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* Frees all memory allocated to the given instruction.
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*
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* @param instruction The instruction to free.
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*/
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void guac_instruction_free(guac_instruction* instruction);
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/**
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* Returns whether new instruction data is available on the given guac_socket
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* connection for parsing.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @return A positive value if data is available, negative on error, or
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* zero if no data is currently available.
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*/
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int guac_protocol_instructions_waiting(guac_socket* socket, int usec_timeout);
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/**
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* Reads a single instruction from the given guac_socket connection.
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*
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* If an error occurs reading the instruction, NULL is returned,
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* and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @return A new instruction if data was successfully read, NULL on
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* error or if the instruction could not be read completely
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* because the timeout elapsed, in which case guac_error will be
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* set to GUAC_STATUS_INPUT_TIMEOUT and subsequent calls to
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* guac_protocol_read_instruction() will return the parsed instruction
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* once enough data is available.
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*/
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guac_instruction* guac_protocol_read_instruction(guac_socket* socket,
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int usec_timeout);
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/**
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* Reads a single instruction with the given opcode from the given guac_socket
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* connection.
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*
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* If an error occurs reading the instruction, NULL is returned,
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* and guac_error is set appropriately.
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*
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* If the instruction read is not the expected instruction, NULL is returned,
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* and guac_error is set to GUAC_STATUS_BAD_STATE.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @param opcode The opcode of the instruction to read.
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* @return A new instruction if an instruction with the given opcode was read,
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* NULL otherwise. If an instruction was read, but the instruction had
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* a different opcode, NULL is returned and guac_error is set to
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* GUAC_STATUS_BAD_STATE.
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*/
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guac_instruction* guac_protocol_expect_instruction(guac_socket* socket,
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int usec_timeout, const char* opcode);
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/**
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* Returns an arbitrary timestamp. The difference between return values of any
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* two calls is equal to the amount of time in milliseconds between those
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* calls. The return value from a single call will not have any useful
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* (or defined) meaning.
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*
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* @return An arbitrary millisecond timestamp.
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*/
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guac_timestamp guac_protocol_get_timestamp();
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/* CONTROL INSTRUCTIONS */
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/**
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* Sends an args instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param args The NULL-terminated array of argument names (strings).
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_args(guac_socket* socket, const char** args);
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/**
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* Sends a connect instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param args The NULL-terminated array of argument values (strings).
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_connect(guac_socket* socket, const char** args);
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/**
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* Sends a data instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param resource The resource associated with the data being sent.
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* @param data The data to send.
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* @param size The number of bytes from the beginning of the given buffer
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* of data to send.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_data(guac_socket* socket, guac_resource* resource,
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const unsigned char* data, size_t size);
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/**
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* Sends a disconnect instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_disconnect(guac_socket* socket);
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/**
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* Sends an end instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param resource The resource being closed.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_end(guac_socket* socket, guac_resource* resource);
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/**
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* Sends an error instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param error The description associated with the error.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_error(guac_socket* socket, const char* error);
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/**
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* Sends a resource instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param resource The resource being exposed.
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* @param uri The URI this resource should be exposed to.
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* @param mimetypes A NULL-terminated array of strings, where each string is
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* an available mimetype.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_resource(guac_socket* socket, guac_resource* resource,
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const char* uri, const char** mimetypes);
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/**
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* Sends a set instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param layer The layer to set the parameter of.
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* @param name The name of the parameter to set.
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* @param value The value to set the parameter to.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_set(guac_socket* socket, const guac_layer* layer,
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const char* name, const char* value);
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/**
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* Sends a select instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param protocol The protocol to request.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_select(guac_socket* socket, const char* protocol);
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/**
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* Sends a sync instruction over the given guac_socket connection. The
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* current time in milliseconds should be passed in as the timestamp.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param timestamp The current timestamp (in milliseconds).
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_sync(guac_socket* socket, guac_timestamp timestamp);
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/* DRAWING INSTRUCTIONS */
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/**
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* Sends an arc instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param layer The destination layer.
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* @param x The X coordinate of the center of the circle containing the arc.
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* @param y The Y coordinate of the center of the circle containing the arc.
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* @param radius The radius of the circle containing the arc.
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* @param startAngle The starting angle, in radians.
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* @param endAngle The ending angle, in radians.
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* @param negative Zero if the arc should be drawn in order of increasing
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* angle, non-zero otherwise.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_arc(guac_socket* socket, const guac_layer* layer,
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int x, int y, int radius, double startAngle, double endAngle,
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int negative);
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/**
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* Sends a cfill instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param mode The composite mode to use.
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* @param layer The destination layer.
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* @param r The red component of the color of the rectangle.
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* @param g The green component of the color of the rectangle.
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* @param b The blue component of the color of the rectangle.
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* @param a The alpha (transparency) component of the color of the rectangle.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_cfill(guac_socket* socket,
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guac_composite_mode mode, const guac_layer* layer,
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int r, int g, int b, int a);
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/**
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* Sends a clip instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param layer The layer to set the clipping region of.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_clip(guac_socket* socket, const guac_layer* layer);
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/**
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* Sends a close instruction over the given guac_socket connection.
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*
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* If an error occurs sending the instruction, a non-zero value is
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* returned, and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param layer The destination layer.
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* @return Zero on success, non-zero on error.
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*/
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int guac_protocol_send_close(guac_socket* socket, const guac_layer* layer);
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/**
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* Sends a copy instruction over the given guac_socket connection.
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*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param srcl The source layer.
|
|
* @param srcx The X coordinate of the source rectangle.
|
|
* @param srcy The Y coordinate of the source rectangle.
|
|
* @param w The width of the source rectangle.
|
|
* @param h The height of the source rectangle.
|
|
* @param mode The composite mode to use.
|
|
* @param dstl The destination layer.
|
|
* @param dstx The X coordinate of the destination, where the source rectangle
|
|
* should be copied.
|
|
* @param dsty The Y coordinate of the destination, where the source rectangle
|
|
* should be copied.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_copy(guac_socket* socket,
|
|
const guac_layer* srcl, int srcx, int srcy, int w, int h,
|
|
guac_composite_mode mode, const guac_layer* dstl, int dstx, int dsty);
|
|
|
|
/**
|
|
* Sends a cstroke instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param mode The composite mode to use.
|
|
* @param layer The destination layer.
|
|
* @param cap The style of line cap to use when drawing the stroke.
|
|
* @param join The style of line join to use when drawing the stroke.
|
|
* @param thickness The thickness of the stroke in pixels.
|
|
* @param r The red component of the color of the rectangle.
|
|
* @param g The green component of the color of the rectangle.
|
|
* @param b The blue component of the color of the rectangle.
|
|
* @param a The alpha (transparency) component of the color of the rectangle.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_cstroke(guac_socket* socket,
|
|
guac_composite_mode mode, const guac_layer* layer,
|
|
guac_line_cap_style cap, guac_line_join_style join, int thickness,
|
|
int r, int g, int b, int a);
|
|
|
|
/**
|
|
* Sends a cursor instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param x The X coordinate of the cursor hotspot.
|
|
* @param y The Y coordinate of the cursor hotspot.
|
|
* @param srcl The source layer.
|
|
* @param srcx The X coordinate of the source rectangle.
|
|
* @param srcy The Y coordinate of the source rectangle.
|
|
* @param w The width of the source rectangle.
|
|
* @param h The height of the source rectangle.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_cursor(guac_socket* socket, int x, int y,
|
|
const guac_layer* srcl, int srcx, int srcy, int w, int h);
|
|
|
|
/**
|
|
* Sends a curve instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The destination layer.
|
|
* @param cp1x The X coordinate of the first control point.
|
|
* @param cp1y The Y coordinate of the first control point.
|
|
* @param cp2x The X coordinate of the second control point.
|
|
* @param cp2y The Y coordinate of the second control point.
|
|
* @param x The X coordinate of the endpoint of the curve.
|
|
* @param y The Y coordinate of the endpoint of the curve.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_curve(guac_socket* socket, const guac_layer* layer,
|
|
int cp1x, int cp1y, int cp2x, int cp2y, int x, int y);
|
|
|
|
/**
|
|
* Sends an identity instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The destination layer.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_identity(guac_socket* socket, const guac_layer* layer);
|
|
|
|
/**
|
|
* Sends an lfill instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param mode The composite mode to use.
|
|
* @param layer The destination layer.
|
|
* @param srcl The source layer.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_lfill(guac_socket* socket,
|
|
guac_composite_mode mode, const guac_layer* layer,
|
|
const guac_layer* srcl);
|
|
|
|
/**
|
|
* Sends a line instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The destination layer.
|
|
* @param x The X coordinate of the endpoint of the line.
|
|
* @param y The Y coordinate of the endpoint of the line.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_line(guac_socket* socket, const guac_layer* layer,
|
|
int x, int y);
|
|
|
|
/**
|
|
* Sends an lstroke instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param mode The composite mode to use.
|
|
* @param layer The destination layer.
|
|
* @param cap The style of line cap to use when drawing the stroke.
|
|
* @param join The style of line join to use when drawing the stroke.
|
|
* @param thickness The thickness of the stroke in pixels.
|
|
* @param srcl The source layer.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_lstroke(guac_socket* socket,
|
|
guac_composite_mode mode, const guac_layer* layer,
|
|
guac_line_cap_style cap, guac_line_join_style join, int thickness,
|
|
const guac_layer* srcl);
|
|
|
|
/**
|
|
* Sends a png instruction over the given guac_socket connection. The PNG image
|
|
* data given will be automatically base64-encoded for transmission.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param mode The composite mode to use.
|
|
* @param layer The destination layer.
|
|
* @param x The destination X coordinate.
|
|
* @param y The destination Y coordinate.
|
|
* @param surface A cairo surface containing the image data to send.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_png(guac_socket* socket, guac_composite_mode mode,
|
|
const guac_layer* layer, int x, int y, cairo_surface_t* surface);
|
|
|
|
/**
|
|
* Sends a pop instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to set the clipping region of.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_pop(guac_socket* socket, const guac_layer* layer);
|
|
|
|
/**
|
|
* Sends a push instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to set the clipping region of.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_push(guac_socket* socket, const guac_layer* layer);
|
|
|
|
/**
|
|
* Sends a rect instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The destination layer.
|
|
* @param x The X coordinate of the rectangle.
|
|
* @param y The Y coordinate of the rectangle.
|
|
* @param width The width of the rectangle.
|
|
* @param height The height of the rectangle.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_rect(guac_socket* socket, const guac_layer* layer,
|
|
int x, int y, int width, int height);
|
|
|
|
/**
|
|
* Sends a reset instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to set the clipping region of.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_reset(guac_socket* socket, const guac_layer* layer);
|
|
|
|
/**
|
|
* Sends a start instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The destination layer.
|
|
* @param x The X coordinate of the first point of the subpath.
|
|
* @param y The Y coordinate of the first point of the subpath.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_start(guac_socket* socket, const guac_layer* layer,
|
|
int x, int y);
|
|
|
|
/**
|
|
* Sends a transfer instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param srcl The source layer.
|
|
* @param srcx The X coordinate of the source rectangle.
|
|
* @param srcy The Y coordinate of the source rectangle.
|
|
* @param w The width of the source rectangle.
|
|
* @param h The height of the source rectangle.
|
|
* @param fn The transfer function to use.
|
|
* @param dstl The destination layer.
|
|
* @param dstx The X coordinate of the destination, where the source rectangle
|
|
* should be copied.
|
|
* @param dsty The Y coordinate of the destination, where the source rectangle
|
|
* should be copied.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_transfer(guac_socket* socket,
|
|
const guac_layer* srcl, int srcx, int srcy, int w, int h,
|
|
guac_transfer_function fn, const guac_layer* dstl, int dstx, int dsty);
|
|
|
|
/**
|
|
* Sends a transform instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to apply the given transform matrix to.
|
|
* @param a The first value of the affine transform matrix.
|
|
* @param b The second value of the affine transform matrix.
|
|
* @param c The third value of the affine transform matrix.
|
|
* @param d The fourth value of the affine transform matrix.
|
|
* @param e The fifth value of the affine transform matrix.
|
|
* @param f The sixth value of the affine transform matrix.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_transform(guac_socket* socket,
|
|
const guac_layer* layer,
|
|
double a, double b, double c,
|
|
double d, double e, double f);
|
|
|
|
/* LAYER INSTRUCTIONS */
|
|
|
|
/**
|
|
* Sends a dispose instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to dispose.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_dispose(guac_socket* socket, const guac_layer* layer);
|
|
|
|
/**
|
|
* Sends a distort instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to distort with the given transform matrix.
|
|
* @param a The first value of the affine transform matrix.
|
|
* @param b The second value of the affine transform matrix.
|
|
* @param c The third value of the affine transform matrix.
|
|
* @param d The fourth value of the affine transform matrix.
|
|
* @param e The fifth value of the affine transform matrix.
|
|
* @param f The sixth value of the affine transform matrix.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_distort(guac_socket* socket,
|
|
const guac_layer* layer,
|
|
double a, double b, double c,
|
|
double d, double e, double f);
|
|
|
|
/**
|
|
* Sends a move instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to move.
|
|
* @param parent The parent layer the specified layer will be positioned
|
|
* relative to.
|
|
* @param x The X coordinate of the layer.
|
|
* @param y The Y coordinate of the layer.
|
|
* @param z The Z index of the layer, relative to other layers in its parent.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_move(guac_socket* socket, const guac_layer* layer,
|
|
const guac_layer* parent, int x, int y, int z);
|
|
|
|
/**
|
|
* Sends a shade instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to shade.
|
|
* @param a The alpha value of the layer.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_shade(guac_socket* socket, const guac_layer* layer,
|
|
int a);
|
|
|
|
/**
|
|
* Sends a size instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param layer The layer to resize.
|
|
* @param w The new width of the layer.
|
|
* @param h The new height of the layer.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_size(guac_socket* socket, const guac_layer* layer,
|
|
int w, int h);
|
|
|
|
/* TEXT INSTRUCTIONS */
|
|
|
|
/**
|
|
* Sends a clipboard instruction over the given guac_socket connection.
|
|
*
|
|
* If an error occurs sending the instruction, a non-zero value is
|
|
* returned, and guac_error is set appropriately.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param data The clipboard data to send.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_clipboard(guac_socket* socket, const char* data);
|
|
|
|
/**
|
|
* Sends a name instruction over the given guac_socket connection.
|
|
*
|
|
* @param socket The guac_socket connection to use.
|
|
* @param name The name to send within the name instruction.
|
|
* @return Zero on success, non-zero on error.
|
|
*/
|
|
int guac_protocol_send_name(guac_socket* socket, const char* name);
|
|
|
|
#endif
|
|
|