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/*!
* ZRender, a high performance 2d drawing library.
*
* Copyright (c) 2013, Baidu Inc.
* All rights reserved.
*
* LICENSE
* https://github.com/ecomfe/zrender/blob/master/LICENSE.txt
*/
import guid from './core/guid';
import env from './core/env';
import * as zrUtil from './core/util';
import Handler from './Handler';
import Storage from './Storage';
import Painter from './Painter';
import Animation from './animation/Animation';
import HandlerProxy from './dom/HandlerProxy';
var useVML = !env.canvasSupported;
var painterCtors = {
canvas: Painter
};
var instances = {}; // ZRender实例map索引
/**
* @type {string}
*/
export var version = '4.3.2';
/**
* Initializing a zrender instance
* @param {HTMLElement} dom
* @param {Object} [opts]
* @param {string} [opts.renderer='canvas'] 'canvas' or 'svg'
* @param {number} [opts.devicePixelRatio]
* @param {number|string} [opts.width] Can be 'auto' (the same as null/undefined)
* @param {number|string} [opts.height] Can be 'auto' (the same as null/undefined)
* @return {module:zrender/ZRender}
*/
export function init(dom, opts) {
var zr = new ZRender(guid(), dom, opts);
instances[zr.id] = zr;
return zr;
}
/**
* Dispose zrender instance
* @param {module:zrender/ZRender} zr
*/
export function dispose(zr) {
if (zr) {
zr.dispose();
}
else {
for (var key in instances) {
if (instances.hasOwnProperty(key)) {
instances[key].dispose();
}
}
instances = {};
}
return this;
}
/**
* Get zrender instance by id
* @param {string} id zrender instance id
* @return {module:zrender/ZRender}
*/
export function getInstance(id) {
return instances[id];
}
export function registerPainter(name, Ctor) {
painterCtors[name] = Ctor;
}
function delInstance(id) {
delete instances[id];
}
/**
* @module zrender/ZRender
*/
/**
* @constructor
* @alias module:zrender/ZRender
* @param {string} id
* @param {HTMLElement} dom
* @param {Object} opts
* @param {string} [opts.renderer='canvas'] 'canvas' or 'svg'
* @param {number} [opts.devicePixelRatio]
* @param {number} [opts.width] Can be 'auto' (the same as null/undefined)
* @param {number} [opts.height] Can be 'auto' (the same as null/undefined)
*/
var ZRender = function (id, dom, opts) {
opts = opts || {};
/**
* @type {HTMLDomElement}
*/
this.dom = dom;
/**
* @type {string}
*/
this.id = id;
var self = this;
var storage = new Storage();
var rendererType = opts.renderer;
// TODO WebGL
if (useVML) {
if (!painterCtors.vml) {
throw new Error('You need to require \'zrender/vml/vml\' to support IE8');
}
rendererType = 'vml';
}
else if (!rendererType || !painterCtors[rendererType]) {
rendererType = 'canvas';
}
var painter = new painterCtors[rendererType](dom, storage, opts, id);
this.storage = storage;
this.painter = painter;
var handerProxy = (!env.node && !env.worker) ? new HandlerProxy(painter.getViewportRoot(), painter.root) : null;
this.handler = new Handler(storage, painter, handerProxy, painter.root);
/**
* @type {module:zrender/animation/Animation}
*/
this.animation = new Animation({
stage: {
update: zrUtil.bind(this.flush, this)
}
});
this.animation.start();
/**
* @type {boolean}
* @private
*/
this._needsRefresh;
// 修改 storage.delFromStorage, 每次删除元素之前删除动画
// FIXME 有点ugly
var oldDelFromStorage = storage.delFromStorage;
var oldAddToStorage = storage.addToStorage;
storage.delFromStorage = function (el) {
oldDelFromStorage.call(storage, el);
el && el.removeSelfFromZr(self);
};
storage.addToStorage = function (el) {
oldAddToStorage.call(storage, el);
el.addSelfToZr(self);
};
};
ZRender.prototype = {
constructor: ZRender,
/**
* 获取实例唯一标识
* @return {string}
*/
getId: function () {
return this.id;
},
/**
* 添加元素
* @param {module:zrender/Element} el
*/
add: function (el) {
this.storage.addRoot(el);
this._needsRefresh = true;
},
/**
* 删除元素
* @param {module:zrender/Element} el
*/
remove: function (el) {
this.storage.delRoot(el);
this._needsRefresh = true;
},
/**
* Change configuration of layer
* @param {string} zLevel
* @param {Object} config
* @param {string} [config.clearColor=0] Clear color
* @param {string} [config.motionBlur=false] If enable motion blur
* @param {number} [config.lastFrameAlpha=0.7] Motion blur factor. Larger value cause longer trailer
*/
configLayer: function (zLevel, config) {
if (this.painter.configLayer) {
this.painter.configLayer(zLevel, config);
}
this._needsRefresh = true;
},
/**
* Set background color
* @param {string} backgroundColor
*/
setBackgroundColor: function (backgroundColor) {
if (this.painter.setBackgroundColor) {
this.painter.setBackgroundColor(backgroundColor);
}
this._needsRefresh = true;
},
/**
* Repaint the canvas immediately
*/
refreshImmediately: function () {
// var start = new Date();
// Clear needsRefresh ahead to avoid something wrong happens in refresh
// Or it will cause zrender refreshes again and again.
this._needsRefresh = this._needsRefreshHover = false;
this.painter.refresh();
// Avoid trigger zr.refresh in Element#beforeUpdate hook
this._needsRefresh = this._needsRefreshHover = false;
// var end = new Date();
// var log = document.getElementById('log');
// if (log) {
// log.innerHTML = log.innerHTML + '<br>' + (end - start);
// }
},
/**
* Mark and repaint the canvas in the next frame of browser
*/
refresh: function () {
this._needsRefresh = true;
},
/**
* Perform all refresh
*/
flush: function () {
var triggerRendered;
if (this._needsRefresh) {
triggerRendered = true;
this.refreshImmediately();
}
if (this._needsRefreshHover) {
triggerRendered = true;
this.refreshHoverImmediately();
}
triggerRendered && this.trigger('rendered');
},
/**
* Add element to hover layer
* @param {module:zrender/Element} el
* @param {Object} style
*/
addHover: function (el, style) {
if (this.painter.addHover) {
var elMirror = this.painter.addHover(el, style);
this.refreshHover();
return elMirror;
}
},
/**
* Add element from hover layer
* @param {module:zrender/Element} el
*/
removeHover: function (el) {
if (this.painter.removeHover) {
this.painter.removeHover(el);
this.refreshHover();
}
},
/**
* Clear all hover elements in hover layer
* @param {module:zrender/Element} el
*/
clearHover: function () {
if (this.painter.clearHover) {
this.painter.clearHover();
this.refreshHover();
}
},
/**
* Refresh hover in next frame
*/
refreshHover: function () {
this._needsRefreshHover = true;
},
/**
* Refresh hover immediately
*/
refreshHoverImmediately: function () {
this._needsRefreshHover = false;
this.painter.refreshHover && this.painter.refreshHover();
},
/**
* Resize the canvas.
* Should be invoked when container size is changed
* @param {Object} [opts]
* @param {number|string} [opts.width] Can be 'auto' (the same as null/undefined)
* @param {number|string} [opts.height] Can be 'auto' (the same as null/undefined)
*/
resize: function (opts) {
opts = opts || {};
this.painter.resize(opts.width, opts.height);
this.handler.resize();
},
/**
* Stop and clear all animation immediately
*/
clearAnimation: function () {
this.animation.clear();
},
/**
* Get container width
*/
getWidth: function () {
return this.painter.getWidth();
},
/**
* Get container height
*/
getHeight: function () {
return this.painter.getHeight();
},
/**
* Export the canvas as Base64 URL
* @param {string} type
* @param {string} [backgroundColor='#fff']
* @return {string} Base64 URL
*/
// toDataURL: function(type, backgroundColor) {
// return this.painter.getRenderedCanvas({
// backgroundColor: backgroundColor
// }).toDataURL(type);
// },
/**
* Converting a path to image.
* It has much better performance of drawing image rather than drawing a vector path.
* @param {module:zrender/graphic/Path} e
* @param {number} width
* @param {number} height
*/
pathToImage: function (e, dpr) {
return this.painter.pathToImage(e, dpr);
},
/**
* Set default cursor
* @param {string} [cursorStyle='default'] 例如 crosshair
*/
setCursorStyle: function (cursorStyle) {
this.handler.setCursorStyle(cursorStyle);
},
/**
* Find hovered element
* @param {number} x
* @param {number} y
* @return {Object} {target, topTarget}
*/
findHover: function (x, y) {
return this.handler.findHover(x, y);
},
/**
* Bind event
*
* @param {string} eventName Event name
* @param {Function} eventHandler Handler function
* @param {Object} [context] Context object
*/
on: function (eventName, eventHandler, context) {
this.handler.on(eventName, eventHandler, context);
},
/**
* Unbind event
* @param {string} eventName Event name
* @param {Function} [eventHandler] Handler function
*/
off: function (eventName, eventHandler) {
this.handler.off(eventName, eventHandler);
},
/**
* Trigger event manually
*
* @param {string} eventName Event name
* @param {event=} event Event object
*/
trigger: function (eventName, event) {
this.handler.trigger(eventName, event);
},
/**
* Clear all objects and the canvas.
*/
clear: function () {
this.storage.delRoot();
this.painter.clear();
},
/**
* Dispose self.
*/
dispose: function () {
this.animation.stop();
this.clear();
this.storage.dispose();
this.painter.dispose();
this.handler.dispose();
this.animation =
this.storage =
this.painter =
this.handler = null;
delInstance(this.id);
}
};