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src_pixi_InteractionManager.js.html
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<!DOCTYPE html>
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<title>src/pixi/InteractionManager.js - Pixi.JS</title>
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<h1 class="file-heading">File: src/pixi/InteractionManager.js</h1>
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<pre class="code prettyprint linenums">
/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
/**
The interaction manager deals with mouse and touch events. Any DisplayObject can be interactive
This manager also supports multitouch.
@class InteractionManager
@constructor
@param stage {Stage}
@type Stage
*/
PIXI.InteractionManager = function(stage)
{
/**
* a refference to the stage
* @property stage
* @type Stage
*/
this.stage = stage;
// helpers
this.tempPoint = new PIXI.Point();
//this.tempMatrix = mat3.create();
this.mouseoverEnabled = true;
/**
* the mouse data
* @property mouse
* @type InteractionData
*/
this.mouse = new PIXI.InteractionData();
/**
* an object that stores current touches (InteractionData) by id reference
* @property touchs
* @type Object
*/
this.touchs = {};
//tiny little interactiveData pool!
this.pool = [];
this.interactiveItems = [];
this.last = 0;
}
// constructor
PIXI.InteractionManager.constructor = PIXI.InteractionManager;
PIXI.InteractionManager.prototype.collectInteractiveSprite = function(displayObject, iParent)
{
var children = displayObject.children;
var length = children.length;
/// make an interaction tree... {item.__interactiveParent}
for (var i = length-1; i >= 0; i--)
{
var child = children[i];
if(child.visible) {
// push all interactive bits
if(child.interactive)
{
iParent.interactiveChildren = true;
//child.__iParent = iParent;
this.interactiveItems.push(child);
if(child.children.length > 0)
{
this.collectInteractiveSprite(child, child);
}
}
else
{
child.__iParent = null;
if(child.children.length > 0)
{
this.collectInteractiveSprite(child, iParent);
}
}
}
}
}
PIXI.InteractionManager.prototype.setTarget = function(target)
{
if (window.navigator.msPointerEnabled)
{
// time to remove some of that zoom in ja..
target.view.style["-ms-content-zooming"] = "none";
target.view.style["-ms-touch-action"] = "none"
// DO some window specific touch!
}
this.target = target;
target.view.addEventListener('mousemove', this.onMouseMove.bind(this), true);
target.view.addEventListener('mousedown', this.onMouseDown.bind(this), true);
document.body.addEventListener('mouseup', this.onMouseUp.bind(this), true);
target.view.addEventListener('mouseout', this.onMouseUp.bind(this), true);
// aint no multi touch just yet!
target.view.addEventListener("touchstart", this.onTouchStart.bind(this), true);
target.view.addEventListener("touchend", this.onTouchEnd.bind(this), true);
target.view.addEventListener("touchmove", this.onTouchMove.bind(this), true);
}
PIXI.InteractionManager.prototype.update = function()
{
if(!this.target)return;
// frequency of 30fps??
var now = Date.now();
var diff = now - this.last;
diff = (diff * 30) / 1000;
if(diff < 1)return;
this.last = now;
//
// ok.. so mouse events??
// yes for now :)
// OPTIMSE - how often to check??
if(this.dirty)
{
this.dirty = false;
var len = this.interactiveItems.length;
for (var i=0; i < len; i++) {
this.interactiveItems[i].interactiveChildren = false;
}
this.interactiveItems = [];
if(this.stage.interactive)this.interactiveItems.push(this.stage);
// go through and collect all the objects that are interactive..
this.collectInteractiveSprite(this.stage, this.stage);
}
// loop through interactive objects!
var length = this.interactiveItems.length;
this.target.view.style.cursor = "default";
for (var i = 0; i < length; i++)
{
var item = this.interactiveItems[i];
if(!item.visible)continue;
// OPTIMISATION - only calculate every time if the mousemove function exists..
// OK so.. does the object have any other interactive functions?
// hit-test the clip!
if(item.mouseover || item.mouseout || item.buttonMode)
{
// ok so there are some functions so lets hit test it..
item.__hit = this.hitTest(item, this.mouse);
// ok so deal with interactions..
// loks like there was a hit!
if(item.__hit)
{
if(item.buttonMode)this.target.view.style.cursor = "pointer";
if(!item.__isOver)
{
if(item.mouseover)item.mouseover(this.mouse);
item.__isOver = true;
}
}
else
{
if(item.__isOver)
{
// roll out!
if(item.mouseout)item.mouseout(this.mouse);
item.__isOver = false;
}
}
}
// --->
}
}
PIXI.InteractionManager.prototype.onMouseMove = function(event)
{
this.mouse.originalEvent = event || window.event; //IE uses window.event
// TODO optimize by not check EVERY TIME! maybe half as often? //
var rect = this.target.view.getBoundingClientRect();
this.mouse.global.x = (event.clientX - rect.left) * (this.target.width / rect.width);
this.mouse.global.y = (event.clientY - rect.top) * ( this.target.height / rect.height);
var length = this.interactiveItems.length;
var global = this.mouse.global;
for (var i = 0; i < length; i++)
{
var item = this.interactiveItems[i];
if(item.mousemove)
{
//call the function!
item.mousemove(this.mouse);
}
}
}
PIXI.InteractionManager.prototype.onMouseDown = function(event)
{
event.preventDefault();
this.mouse.originalEvent = event || window.event; //IE uses window.event
// loop through inteaction tree...
// hit test each item! ->
// get interactive items under point??
//stage.__i
var length = this.interactiveItems.length;
var global = this.mouse.global;
var index = 0;
var parent = this.stage;
// while
// hit test
for (var i = 0; i < length; i++)
{
var item = this.interactiveItems[i];
if(item.mousedown || item.click)
{
item.__mouseIsDown = true;
item.__hit = this.hitTest(item, this.mouse);
if(item.__hit)
{
//call the function!
if(item.mousedown)item.mousedown(this.mouse);
item.__isDown = true;
// just the one!
if(!item.interactiveChildren)break;
}
}
}
}
PIXI.InteractionManager.prototype.onMouseUp = function(event)
{
this.mouse.originalEvent = event || window.event; //IE uses window.event
var global = this.mouse.global;
var length = this.interactiveItems.length;
var up = false;
for (var i = 0; i < length; i++)
{
var item = this.interactiveItems[i];
if(item.mouseup || item.mouseupoutside || item.click)
{
item.__hit = this.hitTest(item, this.mouse);
if(item.__hit && !up)
{
//call the function!
if(item.mouseup)
{
item.mouseup(this.mouse);
}
if(item.__isDown)
{
if(item.click)item.click(this.mouse);
}
if(!item.interactiveChildren)up = true;
}
else
{
if(item.__isDown)
{
if(item.mouseupoutside)item.mouseupoutside(this.mouse);
}
}
item.__isDown = false;
}
}
}
PIXI.InteractionManager.prototype.hitTest = function(item, interactionData)
{
var global = interactionData.global;
if(!item.visible)return false;
var isSprite = (item instanceof PIXI.Sprite),
worldTransform = item.worldTransform,
a00 = worldTransform[0], a01 = worldTransform[1], a02 = worldTransform[2],
a10 = worldTransform[3], a11 = worldTransform[4], a12 = worldTransform[5],
id = 1 / (a00 * a11 + a01 * -a10),
x = a11 * id * global.x + -a01 * id * global.y + (a12 * a01 - a02 * a11) * id,
y = a00 * id * global.y + -a10 * id * global.x + (-a12 * a00 + a02 * a10) * id;
//a sprite or display object with a hit area defined
if(item.hitArea && item.hitArea.contains) {
if(item.hitArea.contains(x, y)) {
if(isSprite)
interactionData.target = item;
return true;
}
}
// a sprite with no hitarea defined
else if(isSprite)
{
var width = item.texture.frame.width,
height = item.texture.frame.height,
x1 = -width * item.anchor.x,
y1;
if(x > x1 && x < x1 + width)
{
y1 = -height * item.anchor.y;
if(y > y1 && y < y1 + height)
{
// set the target property if a hit is true!
interactionData.target = item
return true;
}
}
}
var length = item.children.length;
for (var i = 0; i < length; i++)
{
var tempItem = item.children[i];
var hit = this.hitTest(tempItem, interactionData);
if(hit)return true;
}
return false;
}
PIXI.InteractionManager.prototype.onTouchMove = function(event)
{
this.mouse.originalEvent = event || window.event; //IE uses window.event
var rect = this.target.view.getBoundingClientRect();
var changedTouches = event.changedTouches;
for (var i=0; i < changedTouches.length; i++)
{
var touchEvent = changedTouches[i];
var touchData = this.touchs[touchEvent.identifier];
// update the touch position
touchData.global.x = (touchEvent.clientX - rect.left) * (this.target.width / rect.width);
touchData.global.y = (touchEvent.clientY - rect.top) * (this.target.height / rect.height);
}
var length = this.interactiveItems.length;
for (var i = 0; i < length; i++)
{
var item = this.interactiveItems[i];
if(item.touchmove)item.touchmove(touchData);
}
}
PIXI.InteractionManager.prototype.onTouchStart = function(event)
{
event.preventDefault();
this.mouse.originalEvent = event || window.event; //IE uses window.event
var rect = this.target.view.getBoundingClientRect();
var changedTouches = event.changedTouches;
for (var i=0; i < changedTouches.length; i++)
{
var touchEvent = changedTouches[i];
var touchData = this.pool.pop();
if(!touchData)touchData = new PIXI.InteractionData();
this.touchs[touchEvent.identifier] = touchData;
touchData.global.x = (touchEvent.clientX - rect.left) * (this.target.width / rect.width);
touchData.global.y = (touchEvent.clientY - rect.top) * (this.target.height / rect.height);
var length = this.interactiveItems.length;
for (var j = 0; j < length; j++)
{
var item = this.interactiveItems[j];
if(item.touchstart || item.tap)
{
item.__hit = this.hitTest(item, touchData);
if(item.__hit)
{
//call the function!
if(item.touchstart)item.touchstart(touchData);
item.__isDown = true;
item.__touchData = touchData;
if(!item.interactiveChildren)break;
}
}
}
}
}
PIXI.InteractionManager.prototype.onTouchEnd = function(event)
{
this.mouse.originalEvent = event || window.event; //IE uses window.event
var rect = this.target.view.getBoundingClientRect();
var changedTouches = event.changedTouches;
for (var i=0; i < changedTouches.length; i++)
{
var touchEvent = changedTouches[i];
var touchData = this.touchs[touchEvent.identifier];
var up = false;
touchData.global.x = (touchEvent.clientX - rect.left) * (this.target.width / rect.width);
touchData.global.y = (touchEvent.clientY - rect.top) * (this.target.height / rect.height);
var length = this.interactiveItems.length;
for (var j = 0; j < length; j++)
{
var item = this.interactiveItems[j];
var itemTouchData = item.__touchData; // <-- Here!
item.__hit = this.hitTest(item, touchData);
if(itemTouchData == touchData)
{
// so this one WAS down...
// hitTest??
if(item.touchend || item.tap)
{
if(item.__hit && !up)
{
if(item.touchend)item.touchend(touchData);
if(item.__isDown)
{
if(item.tap)item.tap(touchData);
}
if(!item.interactiveChildren)up = true;
}
else
{
if(item.__isDown)
{
if(item.touchendoutside)item.touchendoutside(touchData);
}
}
item.__isDown = false;
}
item.__touchData = null;
}
else
{
}
}
// remove the touch..
this.pool.push(touchData);
this.touchs[touchEvent.identifier] = null;
}
}
/**
@class InteractionData
@constructor
*/
PIXI.InteractionData = function()
{
/**
* This point stores the global coords of where the touch/mouse event happened
* @property global
* @type Point
*/
this.global = new PIXI.Point();
// this is here for legacy... but will remove
this.local = new PIXI.Point();
/**
* The target Sprite that was interacted with
* @property target
* @type Sprite
*/
this.target;
/**
* When passed to an event handler, this will be the original DOM Event that was captured
* @property originalEvent
* @type Event
*/
this.originalEvent;
}
/**
* This will return the local coords of the specified displayObject for this InteractionData
* @method getLocalPosition
* @param displayObject {DisplayObject} The DisplayObject that you would like the local coords off
* @return {Point} A point containing the coords of the InteractionData position relative to the DisplayObject
*/
PIXI.InteractionData.prototype.getLocalPosition = function(displayObject)
{
var worldTransform = displayObject.worldTransform;
var global = this.global;
// do a cheeky transform to get the mouse coords;
var a00 = worldTransform[0], a01 = worldTransform[1], a02 = worldTransform[2],
a10 = worldTransform[3], a11 = worldTransform[4], a12 = worldTransform[5],
id = 1 / (a00 * a11 + a01 * -a10);
// set the mouse coords...
return new PIXI.Point(a11 * id * global.x + -a01 * id * global.y + (a12 * a01 - a02 * a11) * id,
a00 * id * global.y + -a10 * id * global.x + (-a12 * a00 + a02 * a10) * id)
}
// constructor
PIXI.InteractionData.constructor = PIXI.InteractionData;
</pre>
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