mirror of
https://github.com/gyurix1968/guacamole-client.git
synced 2025-09-07 05:31:22 +00:00
1875 lines
52 KiB
JavaScript
1875 lines
52 KiB
JavaScript
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (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.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is guacamole-common-js.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Michael Jumper.
|
|
* Portions created by the Initial Developer are Copyright (C) 2010
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Matt Hortman
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/**
|
|
* Namespace for all Guacamole JavaScript objects.
|
|
* @namespace
|
|
*/
|
|
var Guacamole = Guacamole || {};
|
|
|
|
/**
|
|
* Simple Guacamole protocol parser that invokes an oninstruction event when
|
|
* full instructions are available from data received via receive().
|
|
*
|
|
* @constructor
|
|
*/
|
|
Guacamole.Parser = function() {
|
|
|
|
/**
|
|
* Reference to this parser.
|
|
* @private
|
|
*/
|
|
var parser = this;
|
|
|
|
/**
|
|
* Current buffer of received data. This buffer grows until a full
|
|
* element is available. After a full element is available, that element
|
|
* is flushed into the element buffer.
|
|
*
|
|
* @private
|
|
*/
|
|
var buffer = "";
|
|
|
|
/**
|
|
* Buffer of all received, complete elements. After an entire instruction
|
|
* is read, this buffer is flushed, and a new instruction begins.
|
|
*
|
|
* @private
|
|
*/
|
|
var element_buffer = [];
|
|
|
|
// The location of the last element's terminator
|
|
var element_end = -1;
|
|
|
|
// Where to start the next length search or the next element
|
|
var start_index = 0;
|
|
|
|
/**
|
|
* Appends the given instruction data packet to the internal buffer of
|
|
* this Guacamole.Parser, executing all completed instructions at
|
|
* the beginning of this buffer, if any.
|
|
*
|
|
* @param {String} packet The instruction data to receive.
|
|
*/
|
|
this.receive = function(packet) {
|
|
|
|
// Truncate buffer as necessary
|
|
if (start_index > 4096 && element_end >= start_index) {
|
|
|
|
buffer = buffer.substring(start_index);
|
|
|
|
// Reset parse relative to truncation
|
|
element_end -= start_index;
|
|
start_index = 0;
|
|
|
|
}
|
|
|
|
// Append data to buffer
|
|
buffer += packet;
|
|
|
|
// While search is within currently received data
|
|
while (element_end < buffer.length) {
|
|
|
|
// If we are waiting for element data
|
|
if (element_end >= start_index) {
|
|
|
|
// We now have enough data for the element. Parse.
|
|
var element = buffer.substring(start_index, element_end);
|
|
var terminator = buffer.substring(element_end, element_end+1);
|
|
|
|
// Add element to array
|
|
element_buffer.push(element);
|
|
|
|
// If last element, handle instruction
|
|
if (terminator == ";") {
|
|
|
|
// Get opcode
|
|
var opcode = element_buffer.shift();
|
|
|
|
// Call instruction handler.
|
|
if (parser.oninstruction != null)
|
|
parser.oninstruction(opcode, element_buffer);
|
|
|
|
// Clear elements
|
|
element_buffer.length = 0;
|
|
|
|
}
|
|
else if (terminator != ',')
|
|
throw new Error("Illegal terminator.");
|
|
|
|
// Start searching for length at character after
|
|
// element terminator
|
|
start_index = element_end + 1;
|
|
|
|
}
|
|
|
|
// Search for end of length
|
|
var length_end = buffer.indexOf(".", start_index);
|
|
if (length_end != -1) {
|
|
|
|
// Parse length
|
|
var length = parseInt(buffer.substring(element_end+1, length_end));
|
|
if (length == NaN)
|
|
throw new Error("Non-numeric character in element length.");
|
|
|
|
// Calculate start of element
|
|
start_index = length_end + 1;
|
|
|
|
// Calculate location of element terminator
|
|
element_end = start_index + length;
|
|
|
|
}
|
|
|
|
// If no period yet, continue search when more data
|
|
// is received
|
|
else {
|
|
start_index = buffer.length;
|
|
break;
|
|
}
|
|
|
|
} // end parse loop
|
|
|
|
};
|
|
|
|
/**
|
|
* Fired once for every complete Guacamole instruction received, in order.
|
|
*
|
|
* @event
|
|
* @param {String} opcode The Guacamole instruction opcode.
|
|
* @param {Array} parameters The parameters provided for the instruction,
|
|
* if any.
|
|
*/
|
|
this.oninstruction = null;
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* An input stream abstraction used by the Guacamole client to facilitate
|
|
* transfer of files or other binary data.
|
|
*
|
|
* @constructor
|
|
* @param {String} mimetype The mimetype of the data this stream will receive.
|
|
*/
|
|
Guacamole.InputStream = function(mimetype) {
|
|
|
|
/**
|
|
* Reference to this Guacamole.InputStream.
|
|
* @private
|
|
*/
|
|
var guac_stream = this;
|
|
|
|
/**
|
|
* The length of this Guacamole.InputStream in bytes.
|
|
* @private
|
|
*/
|
|
var length = 0;
|
|
|
|
/**
|
|
* The mimetype of the data contained within this blob.
|
|
*/
|
|
this.mimetype = mimetype;
|
|
|
|
// Get blob builder
|
|
var blob_builder;
|
|
if (window.BlobBuilder) blob_builder = new BlobBuilder();
|
|
else if (window.WebKitBlobBuilder) blob_builder = new WebKitBlobBuilder();
|
|
else if (window.MozBlobBuilder) blob_builder = new MozBlobBuilder();
|
|
else
|
|
blob_builder = new (function() {
|
|
|
|
var blobs = [];
|
|
|
|
/** @ignore */
|
|
this.append = function(data) {
|
|
blobs.push(new Blob([data], {"type": mimetype}));
|
|
};
|
|
|
|
/** @ignore */
|
|
this.getBlob = function() {
|
|
return new Blob(blobs, {"type": mimetype});
|
|
};
|
|
|
|
})();
|
|
|
|
/**
|
|
* Receives the given ArrayBuffer, storing its data within this
|
|
* Guacamole.InputStream.
|
|
*
|
|
* @param {ArrayBuffer} buffer An ArrayBuffer containing the data to be
|
|
* received.
|
|
*/
|
|
this.receive = function(buffer) {
|
|
|
|
blob_builder.append(buffer);
|
|
length += buffer.byteLength;
|
|
|
|
// Call handler, if present
|
|
if (guac_stream.onreceive)
|
|
guac_stream.onreceive(buffer.byteLength);
|
|
|
|
};
|
|
|
|
/**
|
|
* Closes this Guacamole.InputStream such that no further data will be
|
|
* written.
|
|
*/
|
|
this.close = function() {
|
|
|
|
// Call handler, if present
|
|
if (guac_stream.onclose)
|
|
guac_stream.onclose();
|
|
|
|
// NOTE: Currently not enforced.
|
|
|
|
};
|
|
|
|
/**
|
|
* Returns the current length of this Guacamole.InputStream, in bytes.
|
|
* @return {Number} The current length of this Guacamole.InputStream.
|
|
*/
|
|
this.getLength = function() {
|
|
return length;
|
|
};
|
|
|
|
/**
|
|
* Returns the contents of this Guacamole.InputStream as a Blob.
|
|
* @return {Blob} The contents of this Guacamole.InputStream.
|
|
*/
|
|
this.getBlob = function() {
|
|
return blob_builder.getBlob();
|
|
};
|
|
|
|
/**
|
|
* Fired once for every blob of data received.
|
|
*
|
|
* @event
|
|
* @param {Number} length The number of bytes received.
|
|
*/
|
|
this.onreceive = null;
|
|
|
|
/**
|
|
* Fired once this stream is finished and no further data will be written.
|
|
* @event
|
|
*/
|
|
this.onclose = null;
|
|
|
|
};
|
|
|
|
/**
|
|
* Integer pool which returns consistently increasing integers while integers
|
|
* are in use, and previously-used integers when possible.
|
|
* @constructor
|
|
*/
|
|
Guacamole.IntegerPool = function() {
|
|
|
|
/**
|
|
* Reference to this integer pool.
|
|
*/
|
|
var guac_pool = this;
|
|
|
|
/**
|
|
* Array of available integers.
|
|
* @type Number[]
|
|
*/
|
|
var pool = [];
|
|
|
|
/**
|
|
* The next integer to return if no more integers remain.
|
|
* @type Number
|
|
*/
|
|
this.next_int = 0;
|
|
|
|
/**
|
|
* Returns the next available integer in the pool. If possible, a previously
|
|
* used integer will be returned.
|
|
*
|
|
* @return {Number} The next available integer.
|
|
*/
|
|
this.next = function() {
|
|
|
|
// If free'd integers exist, return one of those
|
|
if (pool.length > 0)
|
|
return pool.shift();
|
|
|
|
// Otherwise, return a new integer
|
|
return guac_pool.next_int++;
|
|
|
|
};
|
|
|
|
/**
|
|
* Frees the given integer, allowing it to be reused.
|
|
*
|
|
* @param {Number} integer The integer to free.
|
|
*/
|
|
this.free = function(integer) {
|
|
pool.push(integer);
|
|
};
|
|
|
|
};
|
|
|
|
/**
|
|
* Abstract stream which can receive data.
|
|
*
|
|
* @constructor
|
|
* @param {Guacamole.Client} client The client owning this stream.
|
|
* @param {Number} index The index of this stream.
|
|
*/
|
|
Guacamole.OutputStream = function(client, index) {
|
|
|
|
/**
|
|
* Reference to this stream.
|
|
* @private
|
|
*/
|
|
var guac_stream = this;
|
|
|
|
/**
|
|
* The index of this stream.
|
|
* @type Number
|
|
*/
|
|
this.index = index;
|
|
|
|
/**
|
|
* Writes the given base64-encoded data to this stream as a blob.
|
|
*
|
|
* @param {String} data The base64-encoded data to send.
|
|
*/
|
|
this.write = function(data) {
|
|
client.sendBlob(guac_stream.index, data);
|
|
};
|
|
|
|
/**
|
|
* Closes this stream.
|
|
*/
|
|
this.close = function() {
|
|
client.endStream(guac_stream.index);
|
|
};
|
|
|
|
};
|
|
|
|
/**
|
|
* Guacamole protocol client. Given a display element and {@link Guacamole.Tunnel},
|
|
* automatically handles incoming and outgoing Guacamole instructions via the
|
|
* provided tunnel, updating the display using one or more canvas elements.
|
|
*
|
|
* @constructor
|
|
* @param {Guacamole.Tunnel} tunnel The tunnel to use to send and receive
|
|
* Guacamole instructions.
|
|
*/
|
|
Guacamole.Client = function(tunnel) {
|
|
|
|
var guac_client = this;
|
|
|
|
var STATE_IDLE = 0;
|
|
var STATE_CONNECTING = 1;
|
|
var STATE_WAITING = 2;
|
|
var STATE_CONNECTED = 3;
|
|
var STATE_DISCONNECTING = 4;
|
|
var STATE_DISCONNECTED = 5;
|
|
|
|
var currentState = STATE_IDLE;
|
|
|
|
var currentTimestamp = 0;
|
|
var pingInterval = null;
|
|
|
|
var displayWidth = 0;
|
|
var displayHeight = 0;
|
|
var displayScale = 1;
|
|
|
|
/**
|
|
* Translation from Guacamole protocol line caps to Layer line caps.
|
|
* @private
|
|
*/
|
|
var lineCap = {
|
|
0: "butt",
|
|
1: "round",
|
|
2: "square"
|
|
};
|
|
|
|
/**
|
|
* Translation from Guacamole protocol line caps to Layer line caps.
|
|
* @private
|
|
*/
|
|
var lineJoin = {
|
|
0: "bevel",
|
|
1: "miter",
|
|
2: "round"
|
|
};
|
|
|
|
// Create bounding div
|
|
var bounds = document.createElement("div");
|
|
bounds.style.position = "relative";
|
|
bounds.style.width = (displayWidth*displayScale) + "px";
|
|
bounds.style.height = (displayHeight*displayScale) + "px";
|
|
|
|
// Create display
|
|
var display = document.createElement("div");
|
|
display.style.position = "relative";
|
|
display.style.width = displayWidth + "px";
|
|
display.style.height = displayHeight + "px";
|
|
|
|
// Ensure transformations on display originate at 0,0
|
|
display.style.transformOrigin =
|
|
display.style.webkitTransformOrigin =
|
|
display.style.MozTransformOrigin =
|
|
display.style.OTransformOrigin =
|
|
display.style.msTransformOrigin =
|
|
"0 0";
|
|
|
|
// Create default layer
|
|
var default_layer_container = new Guacamole.Client.LayerContainer(displayWidth, displayHeight);
|
|
|
|
// Position default layer
|
|
var default_layer_container_element = default_layer_container.getElement();
|
|
default_layer_container_element.style.position = "absolute";
|
|
default_layer_container_element.style.left = "0px";
|
|
default_layer_container_element.style.top = "0px";
|
|
default_layer_container_element.style.overflow = "hidden";
|
|
|
|
// Create cursor layer
|
|
var cursor = new Guacamole.Client.LayerContainer(0, 0);
|
|
cursor.getLayer().setChannelMask(Guacamole.Layer.SRC);
|
|
cursor.getLayer().autoflush = true;
|
|
|
|
// Position cursor layer
|
|
var cursor_element = cursor.getElement();
|
|
cursor_element.style.position = "absolute";
|
|
cursor_element.style.left = "0px";
|
|
cursor_element.style.top = "0px";
|
|
|
|
// Add default layer and cursor to display
|
|
display.appendChild(default_layer_container.getElement());
|
|
display.appendChild(cursor.getElement());
|
|
|
|
// Add display to bounds
|
|
bounds.appendChild(display);
|
|
|
|
// Initially, only default layer exists
|
|
var layers = [default_layer_container];
|
|
|
|
// No initial buffers
|
|
var buffers = [];
|
|
|
|
// No initial parsers
|
|
var parsers = [];
|
|
|
|
// No initial audio channels
|
|
var audio_channels = [];
|
|
|
|
// No initial streams
|
|
var streams = [];
|
|
|
|
// Pool of available streams
|
|
var stream_indices = new Guacamole.IntegerPool();
|
|
|
|
tunnel.onerror = function(message) {
|
|
if (guac_client.onerror)
|
|
guac_client.onerror(message);
|
|
};
|
|
|
|
function setState(state) {
|
|
if (state != currentState) {
|
|
currentState = state;
|
|
if (guac_client.onstatechange)
|
|
guac_client.onstatechange(currentState);
|
|
}
|
|
}
|
|
|
|
function isConnected() {
|
|
return currentState == STATE_CONNECTED
|
|
|| currentState == STATE_WAITING;
|
|
}
|
|
|
|
var cursorHotspotX = 0;
|
|
var cursorHotspotY = 0;
|
|
|
|
var cursorX = 0;
|
|
var cursorY = 0;
|
|
|
|
function moveCursor(x, y) {
|
|
|
|
// Move cursor layer
|
|
cursor.translate(x - cursorHotspotX, y - cursorHotspotY);
|
|
|
|
// Update stored position
|
|
cursorX = x;
|
|
cursorY = y;
|
|
|
|
}
|
|
|
|
/**
|
|
* Returns an element containing the display of this Guacamole.Client.
|
|
* Adding the element returned by this function to an element in the body
|
|
* of a document will cause the client's display to be visible.
|
|
*
|
|
* @return {Element} An element containing ths display of this
|
|
* Guacamole.Client.
|
|
*/
|
|
this.getDisplay = function() {
|
|
return bounds;
|
|
};
|
|
|
|
/**
|
|
* Sends the current size of the screen.
|
|
*
|
|
* @param {Number} width The width of the screen.
|
|
* @param {Number} height The height of the screen.
|
|
*/
|
|
this.sendSize = function(width, height) {
|
|
|
|
// Do not send requests if not connected
|
|
if (!isConnected())
|
|
return;
|
|
|
|
tunnel.sendMessage("size", width, height);
|
|
|
|
};
|
|
|
|
/**
|
|
* Sends a key event having the given properties as if the user
|
|
* pressed or released a key.
|
|
*
|
|
* @param {Boolean} pressed Whether the key is pressed (true) or released
|
|
* (false).
|
|
* @param {Number} keysym The keysym of the key being pressed or released.
|
|
*/
|
|
this.sendKeyEvent = function(pressed, keysym) {
|
|
// Do not send requests if not connected
|
|
if (!isConnected())
|
|
return;
|
|
|
|
tunnel.sendMessage("key", keysym, pressed);
|
|
};
|
|
|
|
/**
|
|
* Sends a mouse event having the properties provided by the given mouse
|
|
* state.
|
|
*
|
|
* @param {Guacamole.Mouse.State} mouseState The state of the mouse to send
|
|
* in the mouse event.
|
|
*/
|
|
this.sendMouseState = function(mouseState) {
|
|
|
|
// Do not send requests if not connected
|
|
if (!isConnected())
|
|
return;
|
|
|
|
// Update client-side cursor
|
|
moveCursor(
|
|
Math.floor(mouseState.x),
|
|
Math.floor(mouseState.y)
|
|
);
|
|
|
|
// Build mask
|
|
var buttonMask = 0;
|
|
if (mouseState.left) buttonMask |= 1;
|
|
if (mouseState.middle) buttonMask |= 2;
|
|
if (mouseState.right) buttonMask |= 4;
|
|
if (mouseState.up) buttonMask |= 8;
|
|
if (mouseState.down) buttonMask |= 16;
|
|
|
|
// Send message
|
|
tunnel.sendMessage("mouse", Math.floor(mouseState.x), Math.floor(mouseState.y), buttonMask);
|
|
};
|
|
|
|
/**
|
|
* Sets the clipboard of the remote client to the given text data.
|
|
*
|
|
* @param {String} data The data to send as the clipboard contents.
|
|
*/
|
|
this.setClipboard = function(data) {
|
|
|
|
// Do not send requests if not connected
|
|
if (!isConnected())
|
|
return;
|
|
|
|
tunnel.sendMessage("clipboard", data);
|
|
};
|
|
|
|
/**
|
|
* Opens a new file for writing, having the given index, mimetype and
|
|
* filename.
|
|
*
|
|
* @param {Number} index The index of the file to write to. This index must
|
|
* be unused.
|
|
* @param {String} mimetype The mimetype of the file being sent.
|
|
* @param {String} filename The filename of the file being sent.
|
|
*/
|
|
this.beginFileStream = function(index, mimetype, filename) {
|
|
|
|
// Do not send requests if not connected
|
|
if (!isConnected())
|
|
return;
|
|
|
|
tunnel.sendMessage("file", index, mimetype, filename);
|
|
};
|
|
|
|
/**
|
|
* Given the index of a file, writes a blob of data to that file.
|
|
*
|
|
* @param {Number} index The index of the file to write to.
|
|
* @param {String} data Base64-encoded data to write to the file.
|
|
*/
|
|
this.sendBlob = function(index, data) {
|
|
|
|
// Do not send requests if not connected
|
|
if (!isConnected())
|
|
return;
|
|
|
|
tunnel.sendMessage("blob", index, data);
|
|
};
|
|
|
|
/**
|
|
* Marks a currently-open stream as complete.
|
|
*
|
|
* @param {Number} index The index of the stream to end.
|
|
*/
|
|
this.endStream = function(index) {
|
|
|
|
// Do not send requests if not connected
|
|
if (!isConnected())
|
|
return;
|
|
|
|
tunnel.sendMessage("end", index);
|
|
};
|
|
|
|
/**
|
|
* Opens a new file for writing, having the given index, mimetype and
|
|
* filename.
|
|
*
|
|
* @param {String} mimetype The mimetype of the file being sent.
|
|
* @param {String} filename The filename of the file being sent.
|
|
*/
|
|
this.createFileStream = function(mimetype, filename) {
|
|
|
|
// Allocate index
|
|
var index = stream_indices.next();
|
|
|
|
// Create new stream
|
|
guac_client.beginFileStream(index, mimetype, filename);
|
|
var stream = new Guacamole.OutputStream(guac_client, index);
|
|
|
|
// Override close() of stream to automatically free index
|
|
var old_close = stream.close;
|
|
stream.close = function() {
|
|
old_close();
|
|
stream_indices.free(index);
|
|
};
|
|
|
|
// Return new, overridden stream
|
|
return stream;
|
|
|
|
};
|
|
|
|
/**
|
|
* Fired whenever the state of this Guacamole.Client changes.
|
|
*
|
|
* @event
|
|
* @param {Number} state The new state of the client.
|
|
*/
|
|
this.onstatechange = null;
|
|
|
|
/**
|
|
* Fired when the remote client sends a name update.
|
|
*
|
|
* @event
|
|
* @param {String} name The new name of this client.
|
|
*/
|
|
this.onname = null;
|
|
|
|
/**
|
|
* Fired when an error is reported by the remote client, and the connection
|
|
* is being closed.
|
|
*
|
|
* @event
|
|
* @param {String} error A human-readable description of the error.
|
|
*/
|
|
this.onerror = null;
|
|
|
|
/**
|
|
* Fired when the clipboard of the remote client is changing.
|
|
*
|
|
* @event
|
|
* @param {String} data The new text data of the remote clipboard.
|
|
*/
|
|
this.onclipboard = null;
|
|
|
|
/**
|
|
* Fired when the default layer (and thus the entire Guacamole display)
|
|
* is resized.
|
|
*
|
|
* @event
|
|
* @param {Number} width The new width of the Guacamole display.
|
|
* @param {Number} height The new height of the Guacamole display.
|
|
*/
|
|
this.onresize = null;
|
|
|
|
/**
|
|
* Fired when a file stream is created. The stream provided to this event
|
|
* handler will contain its own event handlers for received data and the
|
|
* close event.
|
|
*
|
|
* @event
|
|
* @param {String} filename The name of the file received.
|
|
* @param {Guacamole.InputStream} stream A stream that will receive
|
|
* data from the server.
|
|
*/
|
|
this.onfile = null;
|
|
|
|
/**
|
|
* Fired whenever a sync instruction is received from the server, indicating
|
|
* that the server is finished processing any input from the client and
|
|
* has sent any results.
|
|
*
|
|
* @event
|
|
* @param {Number} timestamp The timestamp associated with the sync
|
|
* instruction.
|
|
*/
|
|
this.onsync = null;
|
|
|
|
// Layers
|
|
function getBufferLayer(index) {
|
|
|
|
index = -1 - index;
|
|
var buffer = buffers[index];
|
|
|
|
// Create buffer if necessary
|
|
if (buffer == null) {
|
|
buffer = new Guacamole.Layer(0, 0);
|
|
buffer.autoflush = 1;
|
|
buffer.autosize = 1;
|
|
buffers[index] = buffer;
|
|
}
|
|
|
|
return buffer;
|
|
|
|
}
|
|
|
|
function getLayerContainer(index) {
|
|
|
|
var layer = layers[index];
|
|
if (layer == null) {
|
|
|
|
// Add new layer
|
|
layer = new Guacamole.Client.LayerContainer(displayWidth, displayHeight);
|
|
layers[index] = layer;
|
|
|
|
// Get and position layer
|
|
var layer_element = layer.getElement();
|
|
layer_element.style.position = "absolute";
|
|
layer_element.style.left = "0px";
|
|
layer_element.style.top = "0px";
|
|
layer_element.style.overflow = "hidden";
|
|
|
|
// Add to default layer container
|
|
default_layer_container.getElement().appendChild(layer_element);
|
|
|
|
}
|
|
|
|
return layer;
|
|
|
|
}
|
|
|
|
function getLayer(index) {
|
|
|
|
// If buffer, just get layer
|
|
if (index < 0)
|
|
return getBufferLayer(index);
|
|
|
|
// Otherwise, retrieve layer from layer container
|
|
return getLayerContainer(index).getLayer();
|
|
|
|
}
|
|
|
|
function getParser(index) {
|
|
|
|
var parser = parsers[index];
|
|
|
|
// If parser not yet created, create it, and tie to the
|
|
// oninstruction handler of the tunnel.
|
|
if (parser == null) {
|
|
parser = parsers[index] = new Guacamole.Parser();
|
|
parser.oninstruction = tunnel.oninstruction;
|
|
}
|
|
|
|
return parser;
|
|
|
|
}
|
|
|
|
function getAudioChannel(index) {
|
|
|
|
var audio_channel = audio_channels[index];
|
|
|
|
// If audio channel not yet created, create it
|
|
if (audio_channel == null)
|
|
audio_channel = audio_channels[index] = new Guacamole.AudioChannel();
|
|
|
|
return audio_channel;
|
|
|
|
}
|
|
|
|
/**
|
|
* Handlers for all defined layer properties.
|
|
* @private
|
|
*/
|
|
var layerPropertyHandlers = {
|
|
|
|
"miter-limit": function(layer, value) {
|
|
layer.setMiterLimit(parseFloat(value));
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Handlers for all instruction opcodes receivable by a Guacamole protocol
|
|
* client.
|
|
* @private
|
|
*/
|
|
var instructionHandlers = {
|
|
|
|
"arc": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
var x = parseInt(parameters[1]);
|
|
var y = parseInt(parameters[2]);
|
|
var radius = parseInt(parameters[3]);
|
|
var startAngle = parseFloat(parameters[4]);
|
|
var endAngle = parseFloat(parameters[5]);
|
|
var negative = parseInt(parameters[6]);
|
|
|
|
layer.arc(x, y, radius, startAngle, endAngle, negative != 0);
|
|
|
|
},
|
|
|
|
"audio": function(parameters) {
|
|
|
|
var stream_index = parseInt(parameters[0]);
|
|
var channel = getAudioChannel(parseInt(parameters[1]));
|
|
var mimetype = parameters[2];
|
|
var duration = parseFloat(parameters[3]);
|
|
|
|
// Create stream
|
|
var stream = streams[stream_index] =
|
|
new Guacamole.InputStream(mimetype);
|
|
|
|
stream.onclose = function() {
|
|
channel.play(mimetype, duration, stream.getBlob());
|
|
};
|
|
|
|
},
|
|
|
|
"blob": function(parameters) {
|
|
|
|
// Get stream
|
|
var stream_index = parseInt(parameters[0]);
|
|
var data = parameters[1];
|
|
var stream = streams[stream_index];
|
|
|
|
// Convert to ArrayBuffer
|
|
var binary = window.atob(data);
|
|
var arrayBuffer = new ArrayBuffer(binary.length);
|
|
var bufferView = new Uint8Array(arrayBuffer);
|
|
|
|
for (var i=0; i<binary.length; i++)
|
|
bufferView[i] = binary.charCodeAt(i);
|
|
|
|
// Write data
|
|
stream.receive(arrayBuffer);
|
|
|
|
},
|
|
|
|
"cfill": function(parameters) {
|
|
|
|
var channelMask = parseInt(parameters[0]);
|
|
var layer = getLayer(parseInt(parameters[1]));
|
|
var r = parseInt(parameters[2]);
|
|
var g = parseInt(parameters[3]);
|
|
var b = parseInt(parameters[4]);
|
|
var a = parseInt(parameters[5]);
|
|
|
|
layer.setChannelMask(channelMask);
|
|
|
|
layer.fillColor(r, g, b, a);
|
|
|
|
},
|
|
|
|
"clip": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
|
|
layer.clip();
|
|
|
|
},
|
|
|
|
"clipboard": function(parameters) {
|
|
if (guac_client.onclipboard) guac_client.onclipboard(parameters[0]);
|
|
},
|
|
|
|
"close": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
|
|
layer.close();
|
|
|
|
},
|
|
|
|
"copy": function(parameters) {
|
|
|
|
var srcL = getLayer(parseInt(parameters[0]));
|
|
var srcX = parseInt(parameters[1]);
|
|
var srcY = parseInt(parameters[2]);
|
|
var srcWidth = parseInt(parameters[3]);
|
|
var srcHeight = parseInt(parameters[4]);
|
|
var channelMask = parseInt(parameters[5]);
|
|
var dstL = getLayer(parseInt(parameters[6]));
|
|
var dstX = parseInt(parameters[7]);
|
|
var dstY = parseInt(parameters[8]);
|
|
|
|
dstL.setChannelMask(channelMask);
|
|
|
|
dstL.copy(
|
|
srcL,
|
|
srcX,
|
|
srcY,
|
|
srcWidth,
|
|
srcHeight,
|
|
dstX,
|
|
dstY
|
|
);
|
|
|
|
},
|
|
|
|
"cstroke": function(parameters) {
|
|
|
|
var channelMask = parseInt(parameters[0]);
|
|
var layer = getLayer(parseInt(parameters[1]));
|
|
var cap = lineCap[parseInt(parameters[2])];
|
|
var join = lineJoin[parseInt(parameters[3])];
|
|
var thickness = parseInt(parameters[4]);
|
|
var r = parseInt(parameters[5]);
|
|
var g = parseInt(parameters[6]);
|
|
var b = parseInt(parameters[7]);
|
|
var a = parseInt(parameters[8]);
|
|
|
|
layer.setChannelMask(channelMask);
|
|
|
|
layer.strokeColor(cap, join, thickness, r, g, b, a);
|
|
|
|
},
|
|
|
|
"cursor": function(parameters) {
|
|
|
|
cursorHotspotX = parseInt(parameters[0]);
|
|
cursorHotspotY = parseInt(parameters[1]);
|
|
var srcL = getLayer(parseInt(parameters[2]));
|
|
var srcX = parseInt(parameters[3]);
|
|
var srcY = parseInt(parameters[4]);
|
|
var srcWidth = parseInt(parameters[5]);
|
|
var srcHeight = parseInt(parameters[6]);
|
|
|
|
// Reset cursor size
|
|
cursor.resize(srcWidth, srcHeight);
|
|
|
|
// Draw cursor to cursor layer
|
|
cursor.getLayer().copy(
|
|
srcL,
|
|
srcX,
|
|
srcY,
|
|
srcWidth,
|
|
srcHeight,
|
|
0,
|
|
0
|
|
);
|
|
|
|
// Update cursor position (hotspot may have changed)
|
|
moveCursor(cursorX, cursorY);
|
|
|
|
},
|
|
|
|
"curve": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
var cp1x = parseInt(parameters[1]);
|
|
var cp1y = parseInt(parameters[2]);
|
|
var cp2x = parseInt(parameters[3]);
|
|
var cp2y = parseInt(parameters[4]);
|
|
var x = parseInt(parameters[5]);
|
|
var y = parseInt(parameters[6]);
|
|
|
|
layer.curveTo(cp1x, cp1y, cp2x, cp2y, x, y);
|
|
|
|
},
|
|
|
|
"dispose": function(parameters) {
|
|
|
|
var layer_index = parseInt(parameters[0]);
|
|
|
|
// If visible layer, remove from parent
|
|
if (layer_index > 0) {
|
|
|
|
// Get container element
|
|
var layer_container = getLayerContainer(layer_index).getElement();
|
|
|
|
// Remove from parent
|
|
layer_container.parentNode.removeChild(layer_container);
|
|
|
|
// Delete reference
|
|
delete layers[layer_index];
|
|
|
|
}
|
|
|
|
// If buffer, just delete reference
|
|
else if (layer_index < 0)
|
|
delete buffers[-1 - layer_index];
|
|
|
|
// Attempting to dispose the root layer currently has no effect.
|
|
|
|
},
|
|
|
|
"distort": function(parameters) {
|
|
|
|
var layer_index = parseInt(parameters[0]);
|
|
var a = parseFloat(parameters[1]);
|
|
var b = parseFloat(parameters[2]);
|
|
var c = parseFloat(parameters[3]);
|
|
var d = parseFloat(parameters[4]);
|
|
var e = parseFloat(parameters[5]);
|
|
var f = parseFloat(parameters[6]);
|
|
|
|
// Only valid for visible layers (not buffers)
|
|
if (layer_index >= 0) {
|
|
|
|
// Get container element
|
|
var layer_container = getLayerContainer(layer_index).getElement();
|
|
|
|
// Set layer transform
|
|
layer_container.transform(a, b, c, d, e, f);
|
|
|
|
}
|
|
|
|
},
|
|
|
|
"error": function(parameters) {
|
|
if (guac_client.onerror) guac_client.onerror(parameters[0]);
|
|
guac_client.disconnect();
|
|
},
|
|
|
|
"end": function(parameters) {
|
|
|
|
// Get stream
|
|
var stream_index = parseInt(parameters[0]);
|
|
var stream = streams[stream_index];
|
|
|
|
// Close stream
|
|
stream.close();
|
|
|
|
},
|
|
|
|
"file": function(parameters) {
|
|
|
|
var stream_index = parseInt(parameters[0]);
|
|
var mimetype = parameters[1];
|
|
var filename = parameters[2];
|
|
|
|
// Create stream
|
|
var stream = streams[stream_index] =
|
|
new Guacamole.InputStream(mimetype);
|
|
|
|
// Call handler now that file stream is created
|
|
if (guac_client.onfile)
|
|
guac_client.onfile(filename, stream);
|
|
|
|
},
|
|
|
|
"identity": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
|
|
layer.setTransform(1, 0, 0, 1, 0, 0);
|
|
|
|
},
|
|
|
|
"lfill": function(parameters) {
|
|
|
|
var channelMask = parseInt(parameters[0]);
|
|
var layer = getLayer(parseInt(parameters[1]));
|
|
var srcLayer = getLayer(parseInt(parameters[2]));
|
|
|
|
layer.setChannelMask(channelMask);
|
|
|
|
layer.fillLayer(srcLayer);
|
|
|
|
},
|
|
|
|
"line": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
var x = parseInt(parameters[1]);
|
|
var y = parseInt(parameters[2]);
|
|
|
|
layer.lineTo(x, y);
|
|
|
|
},
|
|
|
|
"lstroke": function(parameters) {
|
|
|
|
var channelMask = parseInt(parameters[0]);
|
|
var layer = getLayer(parseInt(parameters[1]));
|
|
var srcLayer = getLayer(parseInt(parameters[2]));
|
|
|
|
layer.setChannelMask(channelMask);
|
|
|
|
layer.strokeLayer(srcLayer);
|
|
|
|
},
|
|
|
|
"move": function(parameters) {
|
|
|
|
var layer_index = parseInt(parameters[0]);
|
|
var parent_index = parseInt(parameters[1]);
|
|
var x = parseInt(parameters[2]);
|
|
var y = parseInt(parameters[3]);
|
|
var z = parseInt(parameters[4]);
|
|
|
|
// Only valid for non-default layers
|
|
if (layer_index > 0 && parent_index >= 0) {
|
|
|
|
// Get container element
|
|
var layer_container = getLayerContainer(layer_index);
|
|
var layer_container_element = layer_container.getElement();
|
|
var parent = getLayerContainer(parent_index).getElement();
|
|
|
|
// Set parent if necessary
|
|
if (!(layer_container_element.parentNode === parent))
|
|
parent.appendChild(layer_container_element);
|
|
|
|
// Move layer
|
|
layer_container.translate(x, y);
|
|
layer_container_element.style.zIndex = z;
|
|
|
|
}
|
|
|
|
},
|
|
|
|
"name": function(parameters) {
|
|
if (guac_client.onname) guac_client.onname(parameters[0]);
|
|
},
|
|
|
|
"nest": function(parameters) {
|
|
var parser = getParser(parseInt(parameters[0]));
|
|
parser.receive(parameters[1]);
|
|
},
|
|
|
|
"png": function(parameters) {
|
|
|
|
var channelMask = parseInt(parameters[0]);
|
|
var layer = getLayer(parseInt(parameters[1]));
|
|
var x = parseInt(parameters[2]);
|
|
var y = parseInt(parameters[3]);
|
|
var data = parameters[4];
|
|
|
|
layer.setChannelMask(channelMask);
|
|
|
|
layer.draw(
|
|
x,
|
|
y,
|
|
"data:image/png;base64," + data
|
|
);
|
|
|
|
},
|
|
|
|
"pop": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
|
|
layer.pop();
|
|
|
|
},
|
|
|
|
"push": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
|
|
layer.push();
|
|
|
|
},
|
|
|
|
"rect": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
var x = parseInt(parameters[1]);
|
|
var y = parseInt(parameters[2]);
|
|
var w = parseInt(parameters[3]);
|
|
var h = parseInt(parameters[4]);
|
|
|
|
layer.rect(x, y, w, h);
|
|
|
|
},
|
|
|
|
"reset": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
|
|
layer.reset();
|
|
|
|
},
|
|
|
|
"set": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
var name = parameters[1];
|
|
var value = parameters[2];
|
|
|
|
// Call property handler if defined
|
|
var handler = layerPropertyHandlers[name];
|
|
if (handler)
|
|
handler(layer, value);
|
|
|
|
},
|
|
|
|
"shade": function(parameters) {
|
|
|
|
var layer_index = parseInt(parameters[0]);
|
|
var a = parseInt(parameters[1]);
|
|
|
|
// Only valid for visible layers (not buffers)
|
|
if (layer_index >= 0) {
|
|
|
|
// Get container element
|
|
var layer_container = getLayerContainer(layer_index).getElement();
|
|
|
|
// Set layer opacity
|
|
layer_container.style.opacity = a/255.0;
|
|
|
|
}
|
|
|
|
},
|
|
|
|
"size": function(parameters) {
|
|
|
|
var layer_index = parseInt(parameters[0]);
|
|
var width = parseInt(parameters[1]);
|
|
var height = parseInt(parameters[2]);
|
|
|
|
// If not buffer, resize layer and container
|
|
if (layer_index >= 0) {
|
|
|
|
// Resize layer
|
|
var layer_container = getLayerContainer(layer_index);
|
|
layer_container.resize(width, height);
|
|
|
|
// If layer is default, resize display
|
|
if (layer_index == 0) {
|
|
|
|
displayWidth = width;
|
|
displayHeight = height;
|
|
|
|
// Update (set) display size
|
|
display.style.width = displayWidth + "px";
|
|
display.style.height = displayHeight + "px";
|
|
|
|
// Update bounds size
|
|
bounds.style.width = (displayWidth*displayScale) + "px";
|
|
bounds.style.height = (displayHeight*displayScale) + "px";
|
|
|
|
// Call resize event handler if defined
|
|
if (guac_client.onresize)
|
|
guac_client.onresize(width, height);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// If buffer, resize layer only
|
|
else {
|
|
var layer = getBufferLayer(parseInt(parameters[0]));
|
|
layer.resize(width, height);
|
|
}
|
|
|
|
},
|
|
|
|
"start": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
var x = parseInt(parameters[1]);
|
|
var y = parseInt(parameters[2]);
|
|
|
|
layer.moveTo(x, y);
|
|
|
|
},
|
|
|
|
"sync": function(parameters) {
|
|
|
|
var timestamp = parameters[0];
|
|
|
|
// When all layers have finished rendering all instructions
|
|
// UP TO THIS POINT IN TIME, send sync response.
|
|
|
|
var layersToSync = 0;
|
|
function syncLayer() {
|
|
|
|
layersToSync--;
|
|
|
|
// Send sync response when layers are finished
|
|
if (layersToSync == 0) {
|
|
if (timestamp != currentTimestamp) {
|
|
tunnel.sendMessage("sync", timestamp);
|
|
currentTimestamp = timestamp;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// Count active, not-ready layers and install sync tracking hooks
|
|
for (var i=0; i<layers.length; i++) {
|
|
|
|
var layer = layers[i].getLayer();
|
|
if (layer) {
|
|
|
|
// Flush layer
|
|
layer.flush();
|
|
|
|
// If still not ready, sync later
|
|
if (!layer.isReady()) {
|
|
layersToSync++;
|
|
layer.sync(syncLayer);
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// If all layers are ready, then we didn't install any hooks.
|
|
// Send sync message now,
|
|
if (layersToSync == 0) {
|
|
if (timestamp != currentTimestamp) {
|
|
tunnel.sendMessage("sync", timestamp);
|
|
currentTimestamp = timestamp;
|
|
}
|
|
}
|
|
|
|
// If received first update, no longer waiting.
|
|
if (currentState == STATE_WAITING)
|
|
setState(STATE_CONNECTED);
|
|
|
|
// Call sync handler if defined
|
|
if (guac_client.onsync)
|
|
guac_client.onsync(timestamp);
|
|
|
|
},
|
|
|
|
"transfer": function(parameters) {
|
|
|
|
var srcL = getLayer(parseInt(parameters[0]));
|
|
var srcX = parseInt(parameters[1]);
|
|
var srcY = parseInt(parameters[2]);
|
|
var srcWidth = parseInt(parameters[3]);
|
|
var srcHeight = parseInt(parameters[4]);
|
|
var transferFunction = Guacamole.Client.DefaultTransferFunction[parameters[5]];
|
|
var dstL = getLayer(parseInt(parameters[6]));
|
|
var dstX = parseInt(parameters[7]);
|
|
var dstY = parseInt(parameters[8]);
|
|
|
|
dstL.transfer(
|
|
srcL,
|
|
srcX,
|
|
srcY,
|
|
srcWidth,
|
|
srcHeight,
|
|
dstX,
|
|
dstY,
|
|
transferFunction
|
|
);
|
|
|
|
},
|
|
|
|
"transform": function(parameters) {
|
|
|
|
var layer = getLayer(parseInt(parameters[0]));
|
|
var a = parseFloat(parameters[1]);
|
|
var b = parseFloat(parameters[2]);
|
|
var c = parseFloat(parameters[3]);
|
|
var d = parseFloat(parameters[4]);
|
|
var e = parseFloat(parameters[5]);
|
|
var f = parseFloat(parameters[6]);
|
|
|
|
layer.transform(a, b, c, d, e, f);
|
|
|
|
},
|
|
|
|
"video": function(parameters) {
|
|
|
|
var stream_index = parseInt(parameters[0]);
|
|
var layer = getLayer(parseInt(parameters[1]));
|
|
var mimetype = parameters[2];
|
|
var duration = parseFloat(parameters[3]);
|
|
|
|
// Create stream
|
|
var stream = streams[stream_index] =
|
|
new Guacamole.InputStream(mimetype);
|
|
|
|
// Play video once closed
|
|
stream.onclose = function() {
|
|
|
|
// Read data from blob from stream
|
|
var reader = new FileReader();
|
|
reader.onload = function() {
|
|
|
|
var binary = "";
|
|
var bytes = new Uint8Array(reader.result);
|
|
|
|
// Produce binary string from bytes in buffer
|
|
for (var i=0; i<bytes.byteLength; i++)
|
|
binary += String.fromCharCode(bytes[i]);
|
|
|
|
// Play video
|
|
layer.play(mimetype, duration, "data:" + mimetype + ";base64," + window.btoa(binary));
|
|
|
|
};
|
|
reader.readAsArrayBuffer(stream.getBlob());
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
tunnel.oninstruction = function(opcode, parameters) {
|
|
|
|
var handler = instructionHandlers[opcode];
|
|
if (handler)
|
|
handler(parameters);
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* Sends a disconnect instruction to the server and closes the tunnel.
|
|
*/
|
|
this.disconnect = function() {
|
|
|
|
// Only attempt disconnection not disconnected.
|
|
if (currentState != STATE_DISCONNECTED
|
|
&& currentState != STATE_DISCONNECTING) {
|
|
|
|
setState(STATE_DISCONNECTING);
|
|
|
|
// Stop ping
|
|
if (pingInterval)
|
|
window.clearInterval(pingInterval);
|
|
|
|
// Send disconnect message and disconnect
|
|
tunnel.sendMessage("disconnect");
|
|
tunnel.disconnect();
|
|
setState(STATE_DISCONNECTED);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Connects the underlying tunnel of this Guacamole.Client, passing the
|
|
* given arbitrary data to the tunnel during the connection process.
|
|
*
|
|
* @param data Arbitrary connection data to be sent to the underlying
|
|
* tunnel during the connection process.
|
|
*/
|
|
this.connect = function(data) {
|
|
|
|
setState(STATE_CONNECTING);
|
|
|
|
try {
|
|
tunnel.connect(data);
|
|
}
|
|
catch (e) {
|
|
setState(STATE_IDLE);
|
|
throw e;
|
|
}
|
|
|
|
// Ping every 5 seconds (ensure connection alive)
|
|
pingInterval = window.setInterval(function() {
|
|
tunnel.sendMessage("sync", currentTimestamp);
|
|
}, 5000);
|
|
|
|
setState(STATE_WAITING);
|
|
};
|
|
|
|
/**
|
|
* Sets the scale of the client display element such that it renders at
|
|
* a relatively smaller or larger size, without affecting the true
|
|
* resolution of the display.
|
|
*
|
|
* @param {Number} scale The scale to resize to, where 1.0 is normal
|
|
* size (1:1 scale).
|
|
*/
|
|
this.scale = function(scale) {
|
|
|
|
display.style.transform =
|
|
display.style.WebkitTransform =
|
|
display.style.MozTransform =
|
|
display.style.OTransform =
|
|
display.style.msTransform =
|
|
|
|
"scale(" + scale + "," + scale + ")";
|
|
|
|
displayScale = scale;
|
|
|
|
// Update bounds size
|
|
bounds.style.width = (displayWidth*displayScale) + "px";
|
|
bounds.style.height = (displayHeight*displayScale) + "px";
|
|
|
|
};
|
|
|
|
/**
|
|
* Returns the width of the display.
|
|
*
|
|
* @return {Number} The width of the display.
|
|
*/
|
|
this.getWidth = function() {
|
|
return displayWidth;
|
|
};
|
|
|
|
/**
|
|
* Returns the height of the display.
|
|
*
|
|
* @return {Number} The height of the display.
|
|
*/
|
|
this.getHeight = function() {
|
|
return displayHeight;
|
|
};
|
|
|
|
/**
|
|
* Returns the scale of the display.
|
|
*
|
|
* @return {Number} The scale of the display.
|
|
*/
|
|
this.getScale = function() {
|
|
return displayScale;
|
|
};
|
|
|
|
/**
|
|
* Returns a canvas element containing the entire display, with all child
|
|
* layers composited within.
|
|
*
|
|
* @return {HTMLCanvasElement} A new canvas element containing a copy of
|
|
* the display.
|
|
*/
|
|
this.flatten = function() {
|
|
|
|
// Get source and destination canvases
|
|
var source = getLayer(0).getCanvas();
|
|
var canvas = document.createElement("canvas");
|
|
|
|
// Set dimensions
|
|
canvas.width = source.width;
|
|
canvas.height = source.height;
|
|
|
|
// Copy image from source
|
|
var context = canvas.getContext("2d");
|
|
context.drawImage(source, 0, 0);
|
|
|
|
// Return new canvas copy
|
|
return canvas;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
/**
|
|
* Simple container for Guacamole.Layer, allowing layers to be easily
|
|
* repositioned and nested. This allows certain operations to be accelerated
|
|
* through DOM manipulation, rather than raster operations.
|
|
*
|
|
* @constructor
|
|
*
|
|
* @param {Number} width The width of the Layer, in pixels. The canvas element
|
|
* backing this Layer will be given this width.
|
|
*
|
|
* @param {Number} height The height of the Layer, in pixels. The canvas element
|
|
* backing this Layer will be given this height.
|
|
*/
|
|
Guacamole.Client.LayerContainer = function(width, height) {
|
|
|
|
/**
|
|
* Reference to this LayerContainer.
|
|
* @private
|
|
*/
|
|
var layer_container = this;
|
|
|
|
// Create layer with given size
|
|
var layer = new Guacamole.Layer(width, height);
|
|
|
|
// Set layer position
|
|
var canvas = layer.getCanvas();
|
|
canvas.style.position = "absolute";
|
|
canvas.style.left = "0px";
|
|
canvas.style.top = "0px";
|
|
|
|
// Create div with given size
|
|
var div = document.createElement("div");
|
|
div.appendChild(canvas);
|
|
div.style.width = width + "px";
|
|
div.style.height = height + "px";
|
|
|
|
/**
|
|
* Changes the size of this LayerContainer and the contained Layer to the
|
|
* given width and height.
|
|
*
|
|
* @param {Number} width The new width to assign to this Layer.
|
|
* @param {Number} height The new height to assign to this Layer.
|
|
*/
|
|
this.resize = function(width, height) {
|
|
|
|
// Resize layer
|
|
layer.resize(width, height);
|
|
|
|
// Resize containing div
|
|
div.style.width = width + "px";
|
|
div.style.height = height + "px";
|
|
|
|
};
|
|
|
|
/**
|
|
* Returns the Layer contained within this LayerContainer.
|
|
* @returns {Guacamole.Layer} The Layer contained within this
|
|
* LayerContainer.
|
|
*/
|
|
this.getLayer = function() {
|
|
return layer;
|
|
};
|
|
|
|
/**
|
|
* Returns the element containing the Layer within this LayerContainer.
|
|
* @returns {Element} The element containing the Layer within this
|
|
* LayerContainer.
|
|
*/
|
|
this.getElement = function() {
|
|
return div;
|
|
};
|
|
|
|
/**
|
|
* The translation component of this LayerContainer's transform.
|
|
* @private
|
|
*/
|
|
var translate = "translate(0px, 0px)"; // (0, 0)
|
|
|
|
/**
|
|
* The arbitrary matrix component of this LayerContainer's transform.
|
|
* @private
|
|
*/
|
|
var matrix = "matrix(1, 0, 0, 1, 0, 0)"; // Identity
|
|
|
|
/**
|
|
* Moves the upper-left corner of this LayerContainer to the given X and Y
|
|
* coordinate.
|
|
*
|
|
* @param {Number} x The X coordinate to move to.
|
|
* @param {Number} y The Y coordinate to move to.
|
|
*/
|
|
this.translate = function(x, y) {
|
|
|
|
// Generate translation
|
|
translate = "translate("
|
|
+ x + "px,"
|
|
+ y + "px)";
|
|
|
|
// Set layer transform
|
|
div.style.transform =
|
|
div.style.WebkitTransform =
|
|
div.style.MozTransform =
|
|
div.style.OTransform =
|
|
div.style.msTransform =
|
|
|
|
translate + " " + matrix;
|
|
|
|
};
|
|
|
|
/**
|
|
* Applies the given affine transform (defined with six values from the
|
|
* transform's matrix).
|
|
*
|
|
* @param {Number} a The first value in the affine transform's matrix.
|
|
* @param {Number} b The second value in the affine transform's matrix.
|
|
* @param {Number} c The third value in the affine transform's matrix.
|
|
* @param {Number} d The fourth value in the affine transform's matrix.
|
|
* @param {Number} e The fifth value in the affine transform's matrix.
|
|
* @param {Number} f The sixth value in the affine transform's matrix.
|
|
*/
|
|
this.transform = function(a, b, c, d, e, f) {
|
|
|
|
// Generate matrix transformation
|
|
matrix =
|
|
|
|
/* a c e
|
|
* b d f
|
|
* 0 0 1
|
|
*/
|
|
|
|
"matrix(" + a + "," + b + "," + c + "," + d + "," + e + "," + f + ")";
|
|
|
|
// Set layer transform
|
|
div.style.transform =
|
|
div.style.WebkitTransform =
|
|
div.style.MozTransform =
|
|
div.style.OTransform =
|
|
div.style.msTransform =
|
|
|
|
translate + " " + matrix;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
/**
|
|
* Map of all Guacamole binary raster operations to transfer functions.
|
|
* @private
|
|
*/
|
|
Guacamole.Client.DefaultTransferFunction = {
|
|
|
|
/* BLACK */
|
|
0x0: function (src, dst) {
|
|
dst.red = dst.green = dst.blue = 0x00;
|
|
},
|
|
|
|
/* WHITE */
|
|
0xF: function (src, dst) {
|
|
dst.red = dst.green = dst.blue = 0xFF;
|
|
},
|
|
|
|
/* SRC */
|
|
0x3: function (src, dst) {
|
|
dst.red = src.red;
|
|
dst.green = src.green;
|
|
dst.blue = src.blue;
|
|
dst.alpha = src.alpha;
|
|
},
|
|
|
|
/* DEST (no-op) */
|
|
0x5: function (src, dst) {
|
|
// Do nothing
|
|
},
|
|
|
|
/* Invert SRC */
|
|
0xC: function (src, dst) {
|
|
dst.red = 0xFF & ~src.red;
|
|
dst.green = 0xFF & ~src.green;
|
|
dst.blue = 0xFF & ~src.blue;
|
|
dst.alpha = src.alpha;
|
|
},
|
|
|
|
/* Invert DEST */
|
|
0xA: function (src, dst) {
|
|
dst.red = 0xFF & ~dst.red;
|
|
dst.green = 0xFF & ~dst.green;
|
|
dst.blue = 0xFF & ~dst.blue;
|
|
},
|
|
|
|
/* AND */
|
|
0x1: function (src, dst) {
|
|
dst.red = ( src.red & dst.red);
|
|
dst.green = ( src.green & dst.green);
|
|
dst.blue = ( src.blue & dst.blue);
|
|
},
|
|
|
|
/* NAND */
|
|
0xE: function (src, dst) {
|
|
dst.red = 0xFF & ~( src.red & dst.red);
|
|
dst.green = 0xFF & ~( src.green & dst.green);
|
|
dst.blue = 0xFF & ~( src.blue & dst.blue);
|
|
},
|
|
|
|
/* OR */
|
|
0x7: function (src, dst) {
|
|
dst.red = ( src.red | dst.red);
|
|
dst.green = ( src.green | dst.green);
|
|
dst.blue = ( src.blue | dst.blue);
|
|
},
|
|
|
|
/* NOR */
|
|
0x8: function (src, dst) {
|
|
dst.red = 0xFF & ~( src.red | dst.red);
|
|
dst.green = 0xFF & ~( src.green | dst.green);
|
|
dst.blue = 0xFF & ~( src.blue | dst.blue);
|
|
},
|
|
|
|
/* XOR */
|
|
0x6: function (src, dst) {
|
|
dst.red = ( src.red ^ dst.red);
|
|
dst.green = ( src.green ^ dst.green);
|
|
dst.blue = ( src.blue ^ dst.blue);
|
|
},
|
|
|
|
/* XNOR */
|
|
0x9: function (src, dst) {
|
|
dst.red = 0xFF & ~( src.red ^ dst.red);
|
|
dst.green = 0xFF & ~( src.green ^ dst.green);
|
|
dst.blue = 0xFF & ~( src.blue ^ dst.blue);
|
|
},
|
|
|
|
/* AND inverted source */
|
|
0x4: function (src, dst) {
|
|
dst.red = 0xFF & (~src.red & dst.red);
|
|
dst.green = 0xFF & (~src.green & dst.green);
|
|
dst.blue = 0xFF & (~src.blue & dst.blue);
|
|
},
|
|
|
|
/* OR inverted source */
|
|
0xD: function (src, dst) {
|
|
dst.red = 0xFF & (~src.red | dst.red);
|
|
dst.green = 0xFF & (~src.green | dst.green);
|
|
dst.blue = 0xFF & (~src.blue | dst.blue);
|
|
},
|
|
|
|
/* AND inverted destination */
|
|
0x2: function (src, dst) {
|
|
dst.red = 0xFF & ( src.red & ~dst.red);
|
|
dst.green = 0xFF & ( src.green & ~dst.green);
|
|
dst.blue = 0xFF & ( src.blue & ~dst.blue);
|
|
},
|
|
|
|
/* OR inverted destination */
|
|
0xB: function (src, dst) {
|
|
dst.red = 0xFF & ( src.red | ~dst.red);
|
|
dst.green = 0xFF & ( src.green | ~dst.green);
|
|
dst.blue = 0xFF & ( src.blue | ~dst.blue);
|
|
}
|
|
|
|
};
|