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GUACAMOLE-1204: Add support for multi-touch events.

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This commit is contained in:
Michael Jumper
2021-02-07 00:40:44 -08:00
parent df6b71541e
commit 23e909d2fc
2 changed files with 335 additions and 0 deletions
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55
guacamole-common-js/src/main/webapp/modules/Client.js
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@@ -364,6 +364,39 @@ Guacamole.Client = function(tunnel) {
tunnel.sendMessage("mouse", Math.floor(x), Math.floor(y), buttonMask);
};
/**
* Sends a touch event having the properties provided by the given touch
* state.
*
* @param {Guacamole.Touch.State} touchState
* The state of the touch contact to send in the touch event.
*
* @param {Boolean} [applyDisplayScale=false]
* Whether the provided touch state uses local display units, rather
* than remote display units, and should be scaled to match the
* {@link Guacamole.Display}.
*/
this.sendTouchState = function sendTouchState(touchState, applyDisplayScale) {
// Do not send requests if not connected
if (!isConnected())
return;
var x = touchState.x;
var y = touchState.y;
// Translate for display units if requested
if (applyDisplayScale) {
x /= display.getScale();
y /= display.getScale();
}
tunnel.sendMessage('touch', touchState.id, Math.floor(x), Math.floor(y),
Math.floor(touchState.radiusX), Math.floor(touchState.radiusY),
touchState.angle, touchState.force);
};
/**
* Allocates an available stream index and creates a new
* Guacamole.OutputStream using that index, associating the resulting
@@ -663,6 +696,20 @@ Guacamole.Client = function(tunnel) {
*/
this.onvideo = null;
/**
* Fired when the remote client is explicitly declaring the level of
* multi-touch support provided by a particular display layer.
*
* @event
* @param {Guacamole.Display.VisibleLayer} layer
* The layer whose multi-touch support level is being declared.
*
* @param {Number} touches
* The maximum number of simultaneous touches supported by the given
* layer, where 0 indicates that touch events are not supported at all.
*/
this.onmultitouch = null;
/**
* Fired when the current value of a connection parameter is being exposed
* by the server.
@@ -839,6 +886,14 @@ Guacamole.Client = function(tunnel) {
"miter-limit": function(layer, value) {
display.setMiterLimit(layer, parseFloat(value));
},
"multi-touch" : function layerSupportsMultiTouch(layer, value) {
// Process "multi-touch" property only for true visible layers (not off-screen buffers)
if (guac_client.onmultitouch && layer instanceof Guacamole.Display.VisibleLayer)
guac_client.onmultitouch(layer, parseInt(value));
}
};