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<h1 class="page-title">Source: input/Touch.js</h1>
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<section>
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<article>
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<pre class="sunlight-highlight-javascript linenums">/**
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* @author Richard Davey <rich@photonstorm.com>
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* @copyright 2014 Photon Storm Ltd.
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* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
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*/
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/**
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* Phaser.Touch handles touch events with your game. Note: Android 2.x only supports 1 touch event at once, no multi-touch.
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*
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* @class Phaser.Touch
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* @classdesc The Touch class handles touch interactions with the game and the resulting Pointer objects.
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* @constructor
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* @param {Phaser.Game} game - A reference to the currently running game.
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*/
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Phaser.Touch = function (game) {
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/**
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* @property {Phaser.Game} game - A reference to the currently running game.
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*/
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this.game = game;
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/**
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* @property {boolean} disabled - You can disable all Touch events by setting disabled = true. While set all new touch events will be ignored.
|
|
* @return {boolean}
|
|
*/
|
|
this.disabled = false;
|
|
|
|
/**
|
|
* @property {Object} callbackContext - The context under which callbacks are called.
|
|
*/
|
|
this.callbackContext = this.game;
|
|
|
|
/**
|
|
* @property {function} touchStartCallback - A callback that can be fired on a touchStart event.
|
|
*/
|
|
this.touchStartCallback = null;
|
|
|
|
/**
|
|
* @property {function} touchMoveCallback - A callback that can be fired on a touchMove event.
|
|
*/
|
|
this.touchMoveCallback = null;
|
|
|
|
/**
|
|
* @property {function} touchEndCallback - A callback that can be fired on a touchEnd event.
|
|
*/
|
|
this.touchEndCallback = null;
|
|
|
|
/**
|
|
* @property {function} touchEnterCallback - A callback that can be fired on a touchEnter event.
|
|
*/
|
|
this.touchEnterCallback = null;
|
|
|
|
/**
|
|
* @property {function} touchLeaveCallback - A callback that can be fired on a touchLeave event.
|
|
*/
|
|
this.touchLeaveCallback = null;
|
|
|
|
/**
|
|
* @property {function} touchCancelCallback - A callback that can be fired on a touchCancel event.
|
|
*/
|
|
this.touchCancelCallback = null;
|
|
|
|
/**
|
|
* @property {boolean} preventDefault - If true the TouchEvent will have prevent.default called on it.
|
|
* @default
|
|
*/
|
|
this.preventDefault = true;
|
|
|
|
/**
|
|
* @property {TouchEvent} event - The browser touch DOM event. Will be set to null if no touch event has ever been received.
|
|
* @default
|
|
*/
|
|
this.event = null;
|
|
|
|
/**
|
|
* @property {function} _onTouchStart - Internal event handler reference.
|
|
* @private
|
|
*/
|
|
this._onTouchStart = null;
|
|
|
|
/**
|
|
* @property {function} _onTouchMove - Internal event handler reference.
|
|
* @private
|
|
*/
|
|
this._onTouchMove = null;
|
|
|
|
/**
|
|
* @property {function} _onTouchEnd - Internal event handler reference.
|
|
* @private
|
|
*/
|
|
this._onTouchEnd = null;
|
|
|
|
/**
|
|
* @property {function} _onTouchEnter - Internal event handler reference.
|
|
* @private
|
|
*/
|
|
this._onTouchEnter = null;
|
|
|
|
/**
|
|
* @property {function} _onTouchLeave - Internal event handler reference.
|
|
* @private
|
|
*/
|
|
this._onTouchLeave = null;
|
|
|
|
/**
|
|
* @property {function} _onTouchCancel - Internal event handler reference.
|
|
* @private
|
|
*/
|
|
this._onTouchCancel = null;
|
|
|
|
/**
|
|
* @property {function} _onTouchMove - Internal event handler reference.
|
|
* @private
|
|
*/
|
|
this._onTouchMove = null;
|
|
|
|
};
|
|
|
|
Phaser.Touch.prototype = {
|
|
|
|
/**
|
|
* Starts the event listeners running.
|
|
* @method Phaser.Touch#start
|
|
*/
|
|
start: function () {
|
|
|
|
if (this._onTouchStart !== null)
|
|
{
|
|
// Avoid setting multiple listeners
|
|
return;
|
|
}
|
|
|
|
var _this = this;
|
|
|
|
if (this.game.device.touch)
|
|
{
|
|
this._onTouchStart = function (event) {
|
|
return _this.onTouchStart(event);
|
|
};
|
|
|
|
this._onTouchMove = function (event) {
|
|
return _this.onTouchMove(event);
|
|
};
|
|
|
|
this._onTouchEnd = function (event) {
|
|
return _this.onTouchEnd(event);
|
|
};
|
|
|
|
this._onTouchEnter = function (event) {
|
|
return _this.onTouchEnter(event);
|
|
};
|
|
|
|
this._onTouchLeave = function (event) {
|
|
return _this.onTouchLeave(event);
|
|
};
|
|
|
|
this._onTouchCancel = function (event) {
|
|
return _this.onTouchCancel(event);
|
|
};
|
|
|
|
this.game.canvas.addEventListener('touchstart', this._onTouchStart, false);
|
|
this.game.canvas.addEventListener('touchmove', this._onTouchMove, false);
|
|
this.game.canvas.addEventListener('touchend', this._onTouchEnd, false);
|
|
this.game.canvas.addEventListener('touchenter', this._onTouchEnter, false);
|
|
this.game.canvas.addEventListener('touchleave', this._onTouchLeave, false);
|
|
this.game.canvas.addEventListener('touchcancel', this._onTouchCancel, false);
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* Consumes all touchmove events on the document (only enable this if you know you need it!).
|
|
* @method Phaser.Touch#consumeTouchMove
|
|
*/
|
|
consumeDocumentTouches: function () {
|
|
|
|
this._documentTouchMove = function (event) {
|
|
event.preventDefault();
|
|
};
|
|
|
|
document.addEventListener('touchmove', this._documentTouchMove, false);
|
|
|
|
},
|
|
|
|
/**
|
|
* The internal method that handles the touchstart event from the browser.
|
|
* @method Phaser.Touch#onTouchStart
|
|
* @param {TouchEvent} event - The native event from the browser. This gets stored in Touch.event.
|
|
*/
|
|
onTouchStart: function (event) {
|
|
|
|
this.event = event;
|
|
|
|
if (this.touchStartCallback)
|
|
{
|
|
this.touchStartCallback.call(this.callbackContext, event);
|
|
}
|
|
|
|
if (this.game.input.disabled || this.disabled)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (this.preventDefault)
|
|
{
|
|
event.preventDefault();
|
|
}
|
|
|
|
// event.targetTouches = list of all touches on the TARGET ELEMENT (i.e. game dom element)
|
|
// event.touches = list of all touches on the ENTIRE DOCUMENT, not just the target element
|
|
// event.changedTouches = the touches that CHANGED in this event, not the total number of them
|
|
for (var i = 0; i < event.changedTouches.length; i++)
|
|
{
|
|
this.game.input.startPointer(event.changedTouches[i]);
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* Touch cancel - touches that were disrupted (perhaps by moving into a plugin or browser chrome).
|
|
* Occurs for example on iOS when you put down 4 fingers and the app selector UI appears.
|
|
* @method Phaser.Touch#onTouchCancel
|
|
* @param {TouchEvent} event - The native event from the browser. This gets stored in Touch.event.
|
|
*/
|
|
onTouchCancel: function (event) {
|
|
|
|
this.event = event;
|
|
|
|
if (this.touchCancelCallback)
|
|
{
|
|
this.touchCancelCallback.call(this.callbackContext, event);
|
|
}
|
|
|
|
if (this.game.input.disabled || this.disabled)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (this.preventDefault)
|
|
{
|
|
event.preventDefault();
|
|
}
|
|
|
|
// Touch cancel - touches that were disrupted (perhaps by moving into a plugin or browser chrome)
|
|
// http://www.w3.org/TR/touch-events/#dfn-touchcancel
|
|
for (var i = 0; i < event.changedTouches.length; i++)
|
|
{
|
|
this.game.input.stopPointer(event.changedTouches[i]);
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* For touch enter and leave its a list of the touch points that have entered or left the target.
|
|
* Doesn't appear to be supported by most browsers on a canvas element yet.
|
|
* @method Phaser.Touch#onTouchEnter
|
|
* @param {TouchEvent} event - The native event from the browser. This gets stored in Touch.event.
|
|
*/
|
|
onTouchEnter: function (event) {
|
|
|
|
this.event = event;
|
|
|
|
if (this.touchEnterCallback)
|
|
{
|
|
this.touchEnterCallback.call(this.callbackContext, event);
|
|
}
|
|
|
|
if (this.game.input.disabled || this.disabled)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (this.preventDefault)
|
|
{
|
|
event.preventDefault();
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* For touch enter and leave its a list of the touch points that have entered or left the target.
|
|
* Doesn't appear to be supported by most browsers on a canvas element yet.
|
|
* @method Phaser.Touch#onTouchLeave
|
|
* @param {TouchEvent} event - The native event from the browser. This gets stored in Touch.event.
|
|
*/
|
|
onTouchLeave: function (event) {
|
|
|
|
this.event = event;
|
|
|
|
if (this.touchLeaveCallback)
|
|
{
|
|
this.touchLeaveCallback.call(this.callbackContext, event);
|
|
}
|
|
|
|
if (this.preventDefault)
|
|
{
|
|
event.preventDefault();
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* The handler for the touchmove events.
|
|
* @method Phaser.Touch#onTouchMove
|
|
* @param {TouchEvent} event - The native event from the browser. This gets stored in Touch.event.
|
|
*/
|
|
onTouchMove: function (event) {
|
|
|
|
this.event = event;
|
|
|
|
if (this.touchMoveCallback)
|
|
{
|
|
this.touchMoveCallback.call(this.callbackContext, event);
|
|
}
|
|
|
|
if (this.preventDefault)
|
|
{
|
|
event.preventDefault();
|
|
}
|
|
|
|
for (var i = 0; i < event.changedTouches.length; i++)
|
|
{
|
|
this.game.input.updatePointer(event.changedTouches[i]);
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* The handler for the touchend events.
|
|
* @method Phaser.Touch#onTouchEnd
|
|
* @param {TouchEvent} event - The native event from the browser. This gets stored in Touch.event.
|
|
*/
|
|
onTouchEnd: function (event) {
|
|
|
|
this.event = event;
|
|
|
|
if (this.touchEndCallback)
|
|
{
|
|
this.touchEndCallback.call(this.callbackContext, event);
|
|
}
|
|
|
|
if (this.preventDefault)
|
|
{
|
|
event.preventDefault();
|
|
}
|
|
|
|
// For touch end its a list of the touch points that have been removed from the surface
|
|
// https://developer.mozilla.org/en-US/docs/DOM/TouchList
|
|
// event.changedTouches = the touches that CHANGED in this event, not the total number of them
|
|
for (var i = 0; i < event.changedTouches.length; i++)
|
|
{
|
|
this.game.input.stopPointer(event.changedTouches[i]);
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* Stop the event listeners.
|
|
* @method Phaser.Touch#stop
|
|
*/
|
|
stop: function () {
|
|
|
|
if (this.game.device.touch)
|
|
{
|
|
this.game.canvas.removeEventListener('touchstart', this._onTouchStart);
|
|
this.game.canvas.removeEventListener('touchmove', this._onTouchMove);
|
|
this.game.canvas.removeEventListener('touchend', this._onTouchEnd);
|
|
this.game.canvas.removeEventListener('touchenter', this._onTouchEnter);
|
|
this.game.canvas.removeEventListener('touchleave', this._onTouchLeave);
|
|
this.game.canvas.removeEventListener('touchcancel', this._onTouchCancel);
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
Phaser.Touch.prototype.constructor = Phaser.Touch;
|
|
</pre>
|
|
</article>
|
|
</section>
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<div class="clearfix"></div>
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<footer>
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|
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<span class="copyright">
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|
Phaser Copyright © 2012-2014 Photon Storm Ltd.
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</span>
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<br />
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<span class="jsdoc-message">
|
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.3.0-dev</a>
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on Tue Apr 15 2014 02:52:22 GMT+0100 (BST) using the <a href="https://github.com/terryweiss/docstrap">DocStrap template</a>.
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