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1692 lines
58 KiB
1692 lines
58 KiB
module.exports = (function () { |
|
var __MODS__ = {}; |
|
var __DEFINE__ = function (modId, func, req) { |
|
var m = { exports: {}, _tempexports: {} }; |
|
__MODS__[modId] = { status: 0, func: func, req: req, m: m }; |
|
}; |
|
var __REQUIRE__ = function (modId, source) { |
|
if (!__MODS__[modId]) return require(source); |
|
if (!__MODS__[modId].status) { |
|
var m = __MODS__[modId].m; |
|
m._exports = m._tempexports; |
|
var desp = Object.getOwnPropertyDescriptor(m, "exports"); |
|
if (desp && desp.configurable) |
|
Object.defineProperty(m, "exports", { |
|
set: function (val) { |
|
if (typeof val === "object" && val !== m._exports) { |
|
m._exports.__proto__ = val.__proto__; |
|
Object.keys(val).forEach(function (k) { |
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m._exports[k] = val[k]; |
|
}); |
|
} |
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m._tempexports = val; |
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}, |
|
get: function () { |
|
return m._tempexports; |
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}, |
|
}); |
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__MODS__[modId].status = 1; |
|
__MODS__[modId].func(__MODS__[modId].req, m, m.exports); |
|
} |
|
return __MODS__[modId].m.exports; |
|
}; |
|
var __REQUIRE_WILDCARD__ = function (obj) { |
|
if (obj && obj.__esModule) { |
|
return obj; |
|
} else { |
|
var newObj = {}; |
|
if (obj != null) { |
|
for (var k in obj) { |
|
if (Object.prototype.hasOwnProperty.call(obj, k)) newObj[k] = obj[k]; |
|
} |
|
} |
|
newObj.default = obj; |
|
return newObj; |
|
} |
|
}; |
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var __REQUIRE_DEFAULT__ = function (obj) { |
|
return obj && obj.__esModule ? obj.default : obj; |
|
}; |
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__DEFINE__( |
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1685064731946, |
|
function (require, module, exports) { |
|
var __TEMP__ = require("./src/index"); |
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var Wxml2Canvas = __REQUIRE_DEFAULT__(__TEMP__); |
|
|
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if (!exports.__esModule) Object.defineProperty(exports, "__esModule", { value: true }); |
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exports.default = Wxml2Canvas; |
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}, |
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function (modId) { |
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var map = { "./src/index": 1685064731947 }; |
|
return __REQUIRE__(map[modId], modId); |
|
}, |
|
); |
|
__DEFINE__( |
|
1685064731947, |
|
function (require, module, exports) { |
|
var __TEMP__ = require("./util"); |
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var Util = __REQUIRE_DEFAULT__(__TEMP__); |
|
|
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const imageMode = [ |
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"scaleToFill", |
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"aspectFit", |
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"aspectFill", |
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"widthFix", |
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"top", |
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"bottom", |
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"center", |
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"left", |
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"right", |
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"top left", |
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"top right", |
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"bottom left", |
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"bottom right", |
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]; |
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|
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class Wxml2Canvas { |
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constructor(options = {}) { |
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this.device = (wx.getSystemInfoSync && wx.getSystemInfoSync()) || {}; |
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|
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if (!options.zoom) { |
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this.zoom = this.device.windowWidth / 375; |
|
} else { |
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this.zoom = options.zoom || 1; |
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} |
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|
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this.element = options.element; |
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this.object = options.obj; |
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this.width = options.width * this.zoom || 0; |
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this.height = options.height * this.zoom || 0; |
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this.destZoom = options.destZoom || 3; |
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this.destWidth = this.width * this.destZoom; |
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this.destHeight = this.height * this.destZoom; |
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this.translateX = options.translateX * this.zoom || 0; |
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this.translateY = options.translateY * this.zoom || 0; |
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this.gradientBackground = options.gradientBackground || null; |
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this.background = options.background || "#ffffff"; |
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this.finishDraw = options.finish || function finish(params) {}; |
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this.errorHandler = options.error || function error(params) {}; |
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this.progress = options.progress || function progress(params) {}; |
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this.textAlign = options.textAlign || "left"; |
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this.fullText = options.fullText || false; |
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this.font = options.font || "14px PingFang SC"; |
|
|
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this._init(); |
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} |
|
|
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draw(data = {}, that) { |
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let self = this; |
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this.data = data; |
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this.fef = that; |
|
|
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this.progress(10); |
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this._preloadImage(data.list) |
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.then((result) => { |
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this.progress(30); |
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self._draw(); |
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}) |
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.catch((res) => { |
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self.errorHandler(res); |
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}); |
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} |
|
|
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measureWidth(text, font) { |
|
if (font) { |
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this.ctx.font = font; |
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} |
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let res = this.ctx.measureText(text) || {}; |
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return res.width || 0; |
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} |
|
|
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_init() { |
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this.progressPercent = 0; // 绘制进度百分比 |
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this.data = null; |
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this.ref = null; |
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this.allPic = []; |
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this.screenList = []; |
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this.asyncList = []; |
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this.imgUrl = ""; |
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this.progressPercent = 0; |
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this.distance = 0; |
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this.progress(0); |
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|
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this.ctx = wx.createCanvasContext(this.element, this.object); |
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this.ctx.font = this.font; |
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this.ctx.setTextBaseline("top"); |
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this.ctx.setStrokeStyle("white"); |
|
|
|
this.debug = this.device.platform === "devtools" ? true : false; |
|
|
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this._drawBakcground(); |
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} |
|
|
|
_drawBakcground() { |
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if (this.gradientBackground) { |
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let line = this.gradientBackground.line || [0, 0, 0, this.height]; |
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let color = this.gradientBackground.color || ["#fff", "#fff"]; |
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let style = { fill: { line, color } }; |
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this._drawRectToCanvas(0, 0, this.width, this.height, style); |
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} else { |
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let style = { fill: this.background }; |
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this._drawRectToCanvas(0, 0, this.width, this.height, style); |
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} |
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} |
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|
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_draw() { |
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let self = this; |
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let list = this.data.list || []; |
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let index = 0; |
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let all = []; |
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let count = 0; |
|
|
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list.forEach((item) => { |
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if (item.type === "wxml") { |
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count += 3; |
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} else { |
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count += 1; |
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} |
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}); |
|
|
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this.distance = 60 / (count || 1); // 进度条的间距 |
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this.progressPercent = 30; |
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this.asyncList = list.filter((item) => item.delay == true); |
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list = list.filter((item) => item.delay != true); |
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drawList(list); |
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|
|
Promise.all(all) |
|
.then((results) => { |
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index = 0; |
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drawList(self.asyncList, true); |
|
|
|
Promise.all(all).then((results) => { |
|
self.progress(90); |
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self._saveCanvasToImage(); |
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}); |
|
}) |
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.catch((e) => { |
|
console.log(e); |
|
self.errorHandler(e); |
|
}); |
|
|
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function drawList(list = [], noDelay) { |
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list.forEach((item, i) => { |
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all[index++] = new Promise((resolve, reject) => { |
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let attr = item.style; |
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item.progress = self.distance; |
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if (noDelay) { |
|
item.delay = 0; |
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} |
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if (item.type === "radius-image") { |
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self._drawCircle(item, attr, resolve, reject, "image"); |
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} else if (item.type === "text") { |
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self._drawText(item, attr, resolve, reject); |
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} else if (item.type === "line") { |
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self._drawLine(item, attr, resolve, reject); |
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} else if (item.type === "circle") { |
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self._drawCircle(item, attr, resolve, reject); |
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} else if (item.type === "rect") { |
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self._drawRect(item, attr, resolve, reject); |
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} else if (item.type === "image") { |
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self._drawRect(item, attr, resolve, reject, "image"); |
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} else if (item.type === "wxml") { |
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self._drawWxml(item, attr, resolve, reject); |
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} else { |
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resolve(); |
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} |
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}); |
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}); |
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} |
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} |
|
|
|
_saveCanvasToImage() { |
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let self = this; |
|
|
|
// 延时保存有两个原因，一个是等待绘制delay的元素，另一个是安卓上样式会错乱 |
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setTimeout( |
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() => { |
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self.progress(95); |
|
|
|
let obj = { |
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x: 0, |
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y: 0, |
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width: self.width, |
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height: self.height, |
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canvasId: self.element, |
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success: function (res) { |
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self.progress(100); |
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self.imgUrl = res.tempFilePath; |
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self.finishDraw(self.imgUrl); |
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}, |
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fail: function (res) { |
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self.errorHandler({ errcode: 1000, errmsg: "save canvas error", e: res }); |
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}, |
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}; |
|
|
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if (self.destZoom !== 3) { |
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obj.destWidth = self.destWidth; |
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obj.destHeight = self.destHeight; |
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} |
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|
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wx.canvasToTempFilePath(obj, self.object); |
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}, |
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self.device.system.indexOf("iOS") === -1 ? 300 : 100, |
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); |
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} |
|
|
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_preloadImage(list = []) { |
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let self = this; |
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let all = []; |
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let count = 0; |
|
|
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list.forEach((item, i) => { |
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if (item.url && self._findPicIndex(item.url) === -1) { |
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// 避免重复下载同一图片 |
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self.allPic.push({ |
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url: item.url, |
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local: "", |
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}); |
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all[count++] = new Promise((resolve, reject) => { |
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// 非http(s)域名的就不下载了 |
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if ( |
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!/^http/.test(item.url) || |
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/^http:\/\/(tmp)|(usr)\//.test(item.url) || |
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/^http:\/\/127\.0\.0\.1/.test(item.url) |
|
) { |
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if (item.isBase64) { |
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let fileManager = wx.getFileSystemManager(); |
|
|
|
fileManager.writeFile({ |
|
filePath: item.url, |
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data: item.isBase64.replace(/data:image\/(.*);base64,/, ""), |
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encoding: "base64", |
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success(res) { |
|
imageInfo(item.url); |
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}, |
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fail(res) { |
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reject(res); |
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}, |
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}); |
|
} else { |
|
imageInfo(item.url); |
|
} |
|
|
|
function imageInfo(url) { |
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wx.getImageInfo({ |
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src: url, |
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success(res) { |
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let index = self._findPicIndex(url); |
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if (index > -1) { |
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self.allPic[index].local = url; |
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self.allPic[index].width = res.width; |
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self.allPic[index].height = res.height; |
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} |
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resolve({ tempFilePath: url }); |
|
}, |
|
fail(res) { |
|
reject(res); |
|
}, |
|
}); |
|
} |
|
} else { |
|
wx.downloadFile({ |
|
url: item.url.replace(/^https?/, "https"), |
|
success: function (res) { |
|
wx.getImageInfo({ |
|
src: res.tempFilePath, |
|
success(img) { |
|
let index = self._findPicIndex(item.url); |
|
if (index > -1) { |
|
self.allPic[index].local = res.tempFilePath; |
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self.allPic[index].width = img.width; |
|
self.allPic[index].height = img.height; |
|
} |
|
resolve(res); |
|
}, |
|
fail(res) { |
|
reject(res); |
|
}, |
|
}); |
|
}, |
|
fail: (res) => { |
|
reject({ errcode: 1001, errmsg: "download pic error" }); |
|
}, |
|
}); |
|
} |
|
}); |
|
} |
|
}); |
|
|
|
return Promise.all(all) |
|
.then((results) => { |
|
return new Promise((resolve) => { |
|
resolve(); |
|
}); |
|
}) |
|
.catch((results) => { |
|
return new Promise((resolve, reject) => { |
|
reject(results); |
|
}); |
|
}); |
|
} |
|
|
|
_findPicIndex(url) { |
|
let index = this.allPic.findIndex((pic) => pic.url === url); |
|
return index; |
|
} |
|
|
|
_drawRect(item, style, resolve, reject, isImage, isWxml) { |
|
let zoom = this.zoom; |
|
let leftOffset = 0; |
|
let topOffset = 0; |
|
let width = style.width; |
|
let height = style.height; |
|
let imgWidth = style.width; |
|
let imgHeight = style.height; |
|
let mode = null; |
|
|
|
try { |
|
item.x = this._resetPositionX(item, style); |
|
item.y = this._resetPositionY(item, style); |
|
|
|
let url; |
|
if (isImage) { |
|
let index = this._findPicIndex(item.url); |
|
if (index > -1) { |
|
url = this.allPic[index].local; |
|
imgWidth = this.allPic[index].width; |
|
imgHeight = this.allPic[index].height; |
|
} else { |
|
url = item.url; |
|
} |
|
} |
|
|
|
style.padding = style.padding || []; |
|
if (isWxml === "inline-wxml") { |
|
item.x = item.x + ((style.padding[3] && style.padding[3]) || 0); |
|
item.y = item.y + ((style.padding[0] && style.padding[0]) || 0); |
|
} |
|
|
|
leftOffset = item.x + style.width + ((style.padding[1] && style.padding[1]) || 0); |
|
|
|
if (!isWxml) { |
|
width = width * zoom; |
|
height = height * zoom; |
|
} |
|
|
|
if (style.dataset && style.dataset.mode && imageMode.indexOf(style.dataset.mode) > -1) { |
|
mode = { |
|
type: style.dataset.mode, |
|
width: imgWidth, |
|
height: imgHeight, |
|
}; |
|
} |
|
|
|
this._drawRectToCanvas(item.x, item.y, width, height, style, url, mode); |
|
this._updateProgress(item.progress); |
|
|
|
if (resolve) { |
|
resolve(); |
|
} else { |
|
return { |
|
leftOffset, |
|
topOffset, |
|
}; |
|
} |
|
} catch (e) { |
|
reject && |
|
reject({ errcode: isImage ? 1003 : 1002, errmsg: isImage ? "drawImage error" : "drawRect error", e }); |
|
} |
|
} |
|
|
|
_drawRectToCanvas(x, y, width, height, style, url, mode) { |
|
let { fill, border, boxShadow } = style; |
|
this.ctx.save(); |
|
this._drawBoxShadow(boxShadow, (res) => { |
|
// 真机上填充渐变色时，没有阴影，先画个相等大小的纯色矩形来实现阴影 |
|
if (fill && typeof fill !== "string" && !this.debug) { |
|
this.ctx.setFillStyle(res.color || "#ffffff"); |
|
this.ctx.fillRect(x, y, width, height); |
|
} |
|
}); |
|
|
|
if (url) { |
|
// 开发者工具有bug，先不裁剪 |
|
if (mode) { |
|
this._resetImageByMode(url, x, y, width, height, mode); |
|
} else { |
|
this.ctx.drawImage(url, x, y, width, height); |
|
} |
|
} else { |
|
this._setFill(fill, () => { |
|
this.ctx.fillRect(x, y, width, height); |
|
}); |
|
} |
|
|
|
this._drawBorder(border, style, (border) => { |
|
let fixBorder = border.width; |
|
this.ctx.strokeRect(x - fixBorder / 2, y - fixBorder / 2, width + fixBorder, height + fixBorder); |
|
}); |
|
|
|
this.ctx.draw(true); |
|
this.ctx.restore(); |
|
this.ctx.strokeStyle = "#fff"; |
|
} |
|
|
|
_resetImageByMode(url, x, y, width, height, mode) { |
|
let self = this; |
|
let offsetX = 0; |
|
let offsetY = 0; |
|
let imgWidth = mode.width; |
|
let imgHeight = mode.height; |
|
|
|
switch (mode.type) { |
|
case "scaleToFill": |
|
imgWidth = width; |
|
imgHeight = height; |
|
self.ctx.drawImage(url, x, y, width, height); |
|
break; |
|
case "widthFix": |
|
height = width / ((imgWidth || 1) / (imgHeight || 1)); |
|
self.ctx.drawImage(url, x, y, width, height); |
|
break; |
|
case "aspectFit": |
|
if (imgWidth > imgHeight) { |
|
let realHeight = width / ((imgWidth || 1) / (imgHeight || 1)); |
|
offsetY = -(height - realHeight) / 2; |
|
imgWidth = width; |
|
imgHeight = realHeight; |
|
} else { |
|
let realWidth = height / ((imgHeight || 1) / (imgWidth || 1)); |
|
offsetX = -(width - realWidth) / 2; |
|
imgWidth = realWidth; |
|
imgHeight = height; |
|
} |
|
|
|
_clip(); |
|
break; |
|
case "aspectFill": |
|
if (imgWidth > imgHeight) { |
|
let realWidth = imgWidth / ((imgHeight || 1) / (height || 1)); |
|
offsetX = (realWidth - width) / 2; |
|
imgWidth = realWidth; |
|
imgHeight = height; |
|
} else { |
|
let realHeight = imgHeight / ((imgWidth || 1) / (width || 1)); |
|
offsetY = (realHeight - height) / 2; |
|
imgWidth = width; |
|
imgHeight = realHeight; |
|
} |
|
|
|
_clip(); |
|
break; |
|
case "top left": |
|
_clip(); |
|
break; |
|
case "top": |
|
offsetX = (mode.width - width) / 2; |
|
_clip(); |
|
break; |
|
case "top right": |
|
offsetX = mode.width - width; |
|
_clip(); |
|
break; |
|
case "left": |
|
offsetY = (mode.height - height) / 2; |
|
_clip(); |
|
break; |
|
case "center": |
|
offsetX = (mode.width - width) / 2; |
|
offsetY = (mode.height - height) / 2; |
|
_clip(); |
|
break; |
|
case "right": |
|
offsetX = mode.width - width; |
|
offsetY = (mode.height - height) / 2; |
|
_clip(); |
|
break; |
|
case "bottom left": |
|
offsetY = mode.height - height; |
|
_clip(); |
|
break; |
|
case "bottom": |
|
offsetX = (mode.width - width) / 2; |
|
offsetY = mode.height - height; |
|
_clip(); |
|
break; |
|
case "bottom right": |
|
offsetX = mode.width - width; |
|
offsetY = mode.height - height; |
|
_clip(); |
|
break; |
|
default: |
|
imgWidth = width; |
|
imgHeight = height; |
|
break; |
|
} |
|
|
|
function _clip() { |
|
self.ctx.save(); |
|
self.ctx.beginPath(); |
|
self.ctx.rect(x, y, width, height); |
|
self.ctx.clip(); |
|
self.ctx.drawImage(url, x - offsetX, y - offsetY, imgWidth, imgHeight); |
|
self.ctx.closePath(); |
|
self.ctx.restore(); |
|
} |
|
} |
|
|
|
_drawText(item, style, resolve, reject, type, isWxml) { |
|
let zoom = this.zoom; |
|
let leftOffset = 0; |
|
let topOffset = 0; |
|
|
|
try { |
|
style.fontSize = this._parseNumber(style.fontSize); |
|
let fontSize = Math.ceil((style.fontSize || 14) * zoom); |
|
this.ctx.setTextBaseline("top"); |
|
this.ctx.font = `${style.fontWeight ? style.fontWeight : "normal"} ${fontSize}px ${ |
|
style.fontFamily || "PingFang SC" |
|
}`; |
|
this.ctx.setFillStyle(style.color || "#454545"); |
|
|
|
let text = item.text || ""; |
|
let textWidth = Math.floor(this.measureWidth(text, style.font || this.ctx.font)); |
|
let lineHeight = this._getLineHeight(style); |
|
let textHeight = Math.ceil(textWidth / (style.width || textWidth)) * lineHeight; |
|
let width = Math.ceil((style.width || textWidth) * (!isWxml ? zoom : 1)); |
|
let whiteSpace = style.whiteSpace || "wrap"; |
|
let x = 0; |
|
let y = 0; |
|
|
|
if (typeof style.padding === "string") { |
|
style.padding = Util.transferPadding(style.padding); |
|
} |
|
item.x = this._resetPositionX(item, style); |
|
item.y = this._resetPositionY(item, style, textHeight); |
|
this._drawBoxShadow(style.boxShadow); |
|
|
|
if (style.background || style.border) { |
|
this._drawTextBackgroud(item, style, textWidth, textHeight, isWxml); |
|
} |
|
|
|
// 行内文本 |
|
if (type === "inline-text") { |
|
width = item.maxWidth; |
|
if (item.leftOffset + textWidth > width) { |
|
// 如果上一个行内元素换行了，这个元素要继续在后面补足一行 |
|
let lineNum = Math.max(Math.floor(textWidth / width), 1); |
|
let length = text.length; |
|
let singleLength = Math.floor(length / lineNum); |
|
let widthOffset = item.leftOffset ? item.leftOffset - item.originX : 0; |
|
let { |
|
endIndex: currentIndex, |
|
single, |
|
singleWidth, |
|
} = this._getTextSingleLine(text, width, singleLength, 0, widthOffset); |
|
x = this._resetTextPositionX(item, style, singleWidth); |
|
y = this._resetTextPositionY(item, style); |
|
this.ctx.fillText(single, x, y); |
|
leftOffset = x + singleWidth; |
|
topOffset = y; |
|
|
|
// 去除第一行补的内容，然后重置 |
|
text = text.substring(currentIndex, text.length); |
|
currentIndex = 0; |
|
lineNum = Math.max(Math.floor(textWidth / width), 1); |
|
textWidth = Math.floor(this.measureWidth(text, style.font || this.ctx.font)); |
|
item.x = item.originX; // 还原换行后的x |
|
for (let i = 0; i < lineNum; i++) { |
|
let { endIndex, single, singleWidth } = this._getTextSingleLine( |
|
text, |
|
width, |
|
singleLength, |
|
currentIndex, |
|
); |
|
currentIndex = endIndex; |
|
if (single) { |
|
x = this._resetTextPositionX(item, style, singleWidth, width); |
|
y = this._resetTextPositionY(item, style, i + 1); |
|
this.ctx.fillText(single, x, y); |
|
if (i === lineNum - 1) { |
|
leftOffset = x + singleWidth; |
|
topOffset = lineHeight * lineNum; |
|
} |
|
} |
|
} |
|
|
|
let last = text.substring(currentIndex, length); |
|
let lastWidth = this.measureWidth(last); |
|
|
|
if (last) { |
|
x = this._resetTextPositionX(item, style, lastWidth, width); |
|
y = this._resetTextPositionY(item, style, lineNum + 1); |
|
this.ctx.fillText(last, x, y); |
|
leftOffset = x + lastWidth; |
|
topOffset = lineHeight * (lineNum + 1); |
|
} |
|
} else { |
|
x = this._resetTextPositionX(item, style, textWidth, width); |
|
y = this._resetTextPositionY(item, style); |
|
this.ctx.fillText(item.text, x, y); |
|
leftOffset = x + textWidth; |
|
topOffset = lineHeight; |
|
} |
|
} else { |
|
// block文本，如果文本长度超过宽度换行 |
|
if (width && textWidth > width && whiteSpace !== "nowrap") { |
|
let lineNum = Math.max(Math.floor(textWidth / width), 1); |
|
let length = text.length; |
|
let singleLength = Math.floor(length / lineNum); |
|
let currentIndex = 0; |
|
|
|
// lineClamp参数限制最多行数 |
|
if (style.lineClamp && lineNum + 1 > style.lineClamp) { |
|
lineNum = style.lineClamp - 1; |
|
} |
|
|
|
for (let i = 0; i < lineNum; i++) { |
|
let { endIndex, single, singleWidth } = this._getTextSingleLine( |
|
text, |
|
width, |
|
singleLength, |
|
currentIndex, |
|
); |
|
currentIndex = endIndex; |
|
x = this._resetTextPositionX(item, style, singleWidth, width); |
|
y = this._resetTextPositionY(item, style, i); |
|
this.ctx.fillText(single, x, y); |
|
} |
|
|
|
// 换行后剩余的文字，超过一行则截断增加省略号 |
|
let last = text.substring(currentIndex, length); |
|
let lastWidth = this.measureWidth(last); |
|
if (lastWidth > width) { |
|
let { single, singleWidth } = this._getTextSingleLine(last, width, singleLength); |
|
lastWidth = singleWidth; |
|
last = single.substring(0, single.length - 1) + "..."; |
|
} |
|
|
|
x = this._resetTextPositionX(item, style, lastWidth, width); |
|
y = this._resetTextPositionY(item, style, lineNum); |
|
this.ctx.fillText(last, x, y); |
|
} else { |
|
x = this._resetTextPositionX(item, style, textWidth, width); |
|
y = this._resetTextPositionY(item, style); |
|
this.ctx.fillText(item.text, x, y); |
|
} |
|
} |
|
|
|
this.ctx.draw(true); |
|
|
|
this._updateProgress(item.progress); |
|
|
|
if (resolve) { |
|
resolve(); |
|
} else { |
|
return { |
|
leftOffset, |
|
topOffset, |
|
}; |
|
} |
|
} catch (e) { |
|
reject && reject({ errcode: 1004, errmsg: "drawText error", e: e }); |
|
} |
|
} |
|
|
|
_drawTextBackgroud(item, style, textWidth, textHeight, isWxml) { |
|
if (!style.width) return; |
|
let zoom = isWxml ? 1 : this.zoom; |
|
let width = style.width || textWidth; |
|
let height = style.height || textHeight; |
|
let rectStyle = { |
|
fill: style.background, |
|
border: style.border, |
|
}; |
|
style.padding = style.padding || [0, 0, 0, 0]; |
|
width += (style.padding[1] || 0) + (style.padding[3] || 0); |
|
height += (style.padding[0] || 0) + (style.padding[2] || 0); |
|
width = width * zoom; |
|
height = height * zoom; |
|
this._drawRectToCanvas(item.x, item.y, width, height, rectStyle); |
|
} |
|
|
|
_drawCircle(item, style, resolve, reject, isImage, isWxml) { |
|
let zoom = this.zoom; |
|
let r = style.r; |
|
try { |
|
item.x = this._resetPositionX(item, style); |
|
item.y = this._resetPositionY(item, style); |
|
|
|
let url; |
|
if (isImage) { |
|
let index = this._findPicIndex(item.url); |
|
if (index > -1) { |
|
url = this.allPic[index].local; |
|
} else { |
|
url = item.url; |
|
} |
|
} |
|
|
|
if (!isWxml) { |
|
r = r * zoom; |
|
} |
|
|
|
this._drawCircleToCanvas(item.x, item.y, r, style, url); |
|
|
|
this._updateProgress(item.progress); |
|
resolve && resolve(); |
|
} catch (e) { |
|
reject && |
|
reject({ |
|
errcode: isImage ? 1006 : 1005, |
|
errmsg: isImage ? "drawCircleImage error" : "drawCircle error", |
|
e, |
|
}); |
|
} |
|
} |
|
|
|
_drawCircleToCanvas(x, y, r, style, url) { |
|
let { fill, border, boxShadow } = style; |
|
|
|
this.ctx.save(); |
|
|
|
this._drawBoxShadow(boxShadow, (res) => { |
|
// 真机上填充渐变色时，没有阴影，先画个相等大小的纯色矩形来实现阴影 |
|
if ((fill && typeof fill !== "string") || (url && res.color)) { |
|
this.ctx.setFillStyle(res.color || "#ffffff"); |
|
this.ctx.beginPath(); |
|
this.ctx.arc(x + r, y + r, r, 0, 2 * Math.PI); |
|
this.ctx.closePath(); |
|
this.ctx.fill(); |
|
} |
|
}); |
|
|
|
if (url) { |
|
this.ctx.save(); |
|
this.ctx.beginPath(); |
|
this.ctx.arc(x + r, y + r, r, 0, 2 * Math.PI); |
|
this.ctx.clip(); |
|
this.ctx.drawImage(url, x, y, r * 2, r * 2); |
|
this.ctx.closePath(); |
|
this.ctx.restore(); |
|
} else { |
|
this._setFill(fill, () => { |
|
this.ctx.beginPath(); |
|
this.ctx.arc(x + r, y + r, r, 0, 2 * Math.PI); |
|
this.ctx.closePath(); |
|
this.ctx.fill(); |
|
}); |
|
} |
|
|
|
this._drawBorder(border, style, (border) => { |
|
this.ctx.beginPath(); |
|
this.ctx.arc(x + r, y + r, r + border.width / 2, 0, 2 * Math.PI); |
|
this.ctx.stroke(); |
|
this.ctx.closePath(); |
|
}); |
|
|
|
this.ctx.draw(true); |
|
this.ctx.restore(); |
|
} |
|
|
|
_drawLine(item, style, resolve, reject, isWxml) { |
|
let zoom = this.zoom; |
|
try { |
|
let x1 = item.x * zoom + this.translateX; |
|
let y1 = item.y * zoom + this.translateY; |
|
let x2 = item.x2 * zoom + this.translateX; |
|
let y2 = item.y2 * zoom + this.translateY; |
|
this._drawLineToCanvas(x1, y1, x2, y2, style); |
|
|
|
this._updateProgress(item.progress); |
|
resolve && resolve(); |
|
} catch (e) { |
|
reject && reject({ errcode: 1007, errmsg: "drawLine error", e }); |
|
} |
|
} |
|
|
|
_drawLineToCanvas(x1, y1, x2, y2, style) { |
|
let { stroke, dash, boxShadow } = style; |
|
|
|
this.ctx.save(); |
|
if (stroke) { |
|
this._setStroke(stroke); |
|
} |
|
|
|
this._drawBoxShadow(boxShadow); |
|
|
|
if (dash) { |
|
let dash = [style.dash[0] || 5, style.dash[1] || 5]; |
|
let offset = style.dash[2] || 0; |
|
this.ctx.setLineDash(dash, offset || 0); |
|
} |
|
|
|
this.ctx.moveTo(x1, y1); |
|
this.ctx.setLineWidth((style.width || 1) * this.zoom); |
|
this.ctx.lineTo(x2, y2); |
|
this.ctx.stroke(); |
|
this.ctx.draw(true); |
|
this.ctx.restore(); |
|
} |
|
|
|
// 废弃，合并到_drawRect |
|
_drawImage(item, style, resolve, reject, isWxml) { |
|
let zoom = this.zoom; |
|
try { |
|
item.x = this._resetPositionX(item, style); |
|
item.y = this._resetPositionY(item, style); |
|
item.x = item.x + (style.padding[3] || 0); |
|
item.y = item.y + (style.padding[0] || 0); |
|
|
|
let index = this._findPicIndex(item.url); |
|
let url = index > -1 ? this.allPic[index].local : item.url; |
|
this._drawImageToCanvas(url, item.x, item.y, style.width * zoom, style.height * zoom, style); |
|
|
|
this._updateProgress(item.progress); |
|
resolve && resolve(); |
|
} catch (e) { |
|
reject && reject({ errcode: 1012, errmsg: "drawRect error", e }); |
|
} |
|
} |
|
|
|
// 废弃，合并到_drawRect |
|
_drawImageToCanvas(url, x, y, width, height, style) { |
|
let { fill, border, boxShadow } = style; |
|
this.ctx.save(); |
|
|
|
this._drawBoxShadow(boxShadow); |
|
this.ctx.drawImage(url, x, y, width, height); |
|
|
|
this._drawBorder(border, style, (border) => { |
|
let fixBorder = border.width; |
|
this.ctx.strokeRect(x - fixBorder / 2, y - fixBorder / 2, width + fixBorder, height + fixBorder); |
|
}); |
|
this.ctx.draw(true); |
|
this.ctx.restore(); |
|
} |
|
|
|
_drawWxml(item, style, resolve, reject) { |
|
let self = this; |
|
let all = []; |
|
try { |
|
this._getWxml(item, style).then((results) => { |
|
// 上 -> 下 |
|
let sorted = self._sortListByTop(results[0]); |
|
let count = 0; |
|
let progress = 0; |
|
Object.keys(sorted).forEach((item) => { |
|
count += sorted[item].length; |
|
}); |
|
progress = (this.distance * 3) / (count || 1); |
|
|
|
all = this._drawWxmlBlock(item, sorted, all, progress, results[1]); |
|
all = this._drawWxmlInline(item, sorted, all, progress, results[1]); |
|
|
|
Promise.all(all) |
|
.then((results) => { |
|
resolve && resolve(); |
|
}) |
|
.catch((e) => { |
|
reject && reject(e); |
|
}); |
|
}); |
|
} catch (e) { |
|
reject && reject({ errcode: 1008, errmsg: "drawWxml error" }); |
|
} |
|
} |
|
|
|
_drawWxmlBlock(item, sorted, all, progress, results) { |
|
let self = this; |
|
// 用来限定位置范围，取相对位置 |
|
let limitLeft = results ? results.left : 0; |
|
let limitTop = results ? results.top : 0; |
|
Object.keys(sorted).forEach((top, topIndex) => { |
|
// 左 -> 右 |
|
let list = sorted[top].sort((a, b) => { |
|
return a.left - b.left; |
|
}); |
|
|
|
list = list.filter((sub) => sub.dataset.type && sub.dataset.type.indexOf("inline") === -1); |
|
|
|
list.forEach((sub, index) => { |
|
all[index] = new Promise((resolve2, reject2) => { |
|
sub = self._transferWxmlStyle(sub, item, limitLeft, limitTop); |
|
sub.progress = progress; |
|
let type = sub.dataset.type; |
|
if (sub.dataset.delay) { |
|
setTimeout(() => { |
|
drawWxmlItem(); |
|
}, sub.dataset.delay); |
|
} else { |
|
drawWxmlItem(); |
|
} |
|
function drawWxmlItem() { |
|
if (type === "text") { |
|
self._drawWxmlText(sub, resolve2, reject2); |
|
} else if (type === "image") { |
|
self._drawWxmlImage(sub, resolve2, reject2); |
|
} else if (type === "radius-image") { |
|
self._drawWxmlCircleImage(sub, resolve2, reject2); |
|
} else if (type === "background-image") { |
|
self._drawWxmlBackgroundImage(sub, resolve2, reject2); |
|
} |
|
} |
|
}); |
|
}); |
|
}); |
|
|
|
return all; |
|
} |
|
|
|
_drawWxmlInline(item, sorted, all, progress, results) { |
|
let self = this; |
|
let topOffset = 0; |
|
let leftOffset = 0; |
|
let lastTop = 0; |
|
let limitLeft = results ? results.left : 0; |
|
let limitTop = results ? results.top : 0; |
|
let p = new Promise((resolve2, reject2) => { |
|
let maxWidth = 0; |
|
let minLeft = Infinity; |
|
let maxRight = 0; |
|
|
|
// 找出同一top下的最小left和最大right，得到最大的宽度，用于换行 |
|
Object.keys(sorted).forEach((top) => { |
|
let inlineList = sorted[top].filter((sub) => sub.dataset.type && sub.dataset.type.indexOf("inline") > -1); |
|
inlineList.forEach((sub) => { |
|
if (sub.left < minLeft) { |
|
minLeft = sub.left; |
|
} |
|
if (sub.right > maxRight) { |
|
maxRight = sub.right; |
|
} |
|
}); |
|
}); |
|
maxWidth = Math.ceil(maxRight - minLeft || self.width); |
|
|
|
Object.keys(sorted).forEach((top, topIndex) => { |
|
// 左 -> 右 |
|
let list = sorted[top].sort((a, b) => { |
|
return a.left - b.left; |
|
}); |
|
|
|
// 换行的行内元素left放到后面，version2.0.6后无法获取高度，改用bottom值来判断是否换行了 |
|
let position = -1; |
|
for (let i = 0, len = list.length; i < len; i++) { |
|
if (list[i] && list[i + 1]) { |
|
if (list[i].bottom > list[i + 1].bottom) { |
|
position = i; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
if (position > -1) { |
|
list.push(list.splice(position, 1)[0]); |
|
} |
|
|
|
let inlineList = list.filter((sub) => sub.dataset.type && sub.dataset.type.indexOf("inline") > -1); |
|
let originLeft = inlineList[0] ? inlineList[0].left : 0; |
|
// 换行后和top不相等时，认为是换行了，要清除左边距；当左偏移量大于最大宽度时，也要清除左边距; 当左偏移小于左边距时，也要清除 |
|
if ( |
|
Math.abs(topOffset + lastTop - top) > 2 || |
|
leftOffset - originLeft - limitLeft >= maxWidth || |
|
leftOffset <= originLeft - limitLeft - 2 |
|
) { |
|
leftOffset = 0; |
|
} |
|
|
|
lastTop = +top; |
|
topOffset = 0; |
|
|
|
inlineList.forEach((sub, index) => { |
|
sub = self._transferWxmlStyle(sub, item, limitLeft, limitTop); |
|
sub.progress = progress; |
|
let type = sub.dataset.type; |
|
if (type === "inline-text") { |
|
let drawRes = self._drawWxmlInlineText(sub, leftOffset, maxWidth); |
|
leftOffset = drawRes.leftOffset; |
|
topOffset = drawRes.topOffset; |
|
} else if (type === "inline-image") { |
|
let drawRes = self._drawWxmlImage(sub) || {}; |
|
leftOffset = drawRes.leftOffset || 0; |
|
topOffset = drawRes.topOffset || 0; |
|
} |
|
}); |
|
}); |
|
resolve2(); |
|
}); |
|
|
|
all.push(p); |
|
return all; |
|
} |
|
|
|
_drawWxmlInlineText(sub, leftOffset = 0, maxWidth) { |
|
let text = sub.dataset.text || ""; |
|
if (sub.dataset.maxlength && text.length > sub.dataset.maxlength) { |
|
text = text.substring(0, sub.dataset.maxlength) + "..."; |
|
} |
|
|
|
let textData = { |
|
text, |
|
originX: sub.left, |
|
x: leftOffset ? leftOffset : sub.left, |
|
y: sub.top, |
|
progress: sub.progress, |
|
leftOffset: leftOffset, |
|
maxWidth: maxWidth, // 行内元素的最大宽度，取决于limit的宽度 |
|
}; |
|
|
|
if (sub.backgroundColor !== "rgba(0, 0, 0, 0)") { |
|
sub.background = sub.backgroundColor; |
|
} else { |
|
sub.background = "rgba(0, 0, 0, 0)"; |
|
} |
|
|
|
if (sub.dataset.background) { |
|
sub.background = sub.dataset.background; |
|
} |
|
|
|
let res = this._drawText(textData, sub, null, null, "inline-text", "wxml"); |
|
|
|
return res; |
|
} |
|
|
|
_drawWxmlText(sub, resolve, reject) { |
|
let text = sub.dataset.text || ""; |
|
if (sub.dataset.maxlength && text.length > sub.dataset.maxlength) { |
|
text = text.substring(0, sub.dataset.maxlength) + "..."; |
|
} |
|
|
|
let textData = { |
|
text, |
|
x: sub.left, |
|
y: sub.top, |
|
progress: sub.progress, |
|
}; |
|
if (sub.backgroundColor !== "rgba(0, 0, 0, 0)") { |
|
sub.background = sub.backgroundColor; |
|
} else { |
|
sub.background = "rgba(0, 0, 0, 0)"; |
|
} |
|
|
|
if (sub.dataset.background) { |
|
sub.background = sub.dataset.background; |
|
} |
|
|
|
this._drawText(textData, sub, resolve, reject, "text", "wxml"); |
|
} |
|
|
|
_drawWxmlImage(sub, resolve, reject) { |
|
let imageData = { |
|
url: sub.dataset.url, |
|
x: sub.left, |
|
y: sub.top, |
|
progress: sub.progress, |
|
}; |
|
|
|
let res = this._drawRect(imageData, sub, resolve, reject, "image", "inline-wxml"); |
|
|
|
return res; |
|
} |
|
|
|
_drawWxmlCircleImage(sub, resolve, reject) { |
|
let imageData = { |
|
url: sub.dataset.url, |
|
x: sub.left, |
|
y: sub.top, |
|
progress: sub.progress, |
|
}; |
|
sub.r = sub.width / 2; |
|
|
|
this._drawCircle(imageData, sub, resolve, reject, true, "wxml"); |
|
} |
|
|
|
_drawWxmlBackgroundImage(sub, resolve, reject) { |
|
let url = sub.dataset.url; |
|
let index = this._findPicIndex(url); |
|
url = index > -1 ? this.allPic[index].local : url; |
|
let size = sub.backgroundSize.replace(/px/g, "").split(" "); |
|
|
|
let imageData = { |
|
url: url, |
|
x: sub.left, |
|
y: sub.top, |
|
progress: sub.progress, |
|
}; |
|
|
|
this._drawRect(imageData, sub, resolve, reject, "image", "wxml"); |
|
} |
|
|
|
_getWxml(item, style) { |
|
let self = this; |
|
let query; |
|
// if (this.obj) { |
|
// query = wx.createSelectorQuery().in(this.obj); |
|
// } else { |
|
// query = wx.createSelectorQuery(); |
|
// } |
|
if (this.object) { |
|
query = wx.createSelectorQuery().in(this.object); |
|
} else { |
|
query = wx.createSelectorQuery(); |
|
} |
|
|
|
let p1 = new Promise((resolve, reject) => { |
|
// 会触发两次，要限制 |
|
let count = 0; |
|
query |
|
.selectAll(`${item.class}`) |
|
.fields( |
|
{ |
|
dataset: true, |
|
size: true, |
|
rect: true, |
|
computedStyle: [ |
|
"width", |
|
"height", |
|
"font", |
|
"fontSize", |
|
"fontFamily", |
|
"fontWeight", |
|
"fontStyle", |
|
"textAlign", |
|
"color", |
|
"lineHeight", |
|
"border", |
|
"borderColor", |
|
"borderStyle", |
|
"borderWidth", |
|
"verticalAlign", |
|
"boxShadow", |
|
"background", |
|
"backgroundColor", |
|
"backgroundImage", |
|
"backgroundPosition", |
|
"backgroundSize", |
|
"paddingLeft", |
|
"paddingTop", |
|
"paddingRight", |
|
"paddingBottom", |
|
], |
|
}, |
|
(res) => { |
|
if (count++ === 0) { |
|
let formated = self._formatImage(res); |
|
let list = formated.list; |
|
res = formated.res; |
|
|
|
self |
|
._preloadImage(list) |
|
.then((result) => { |
|
resolve(res); |
|
}) |
|
.catch((res) => { |
|
reject && reject({ errcode: 1009, errmsg: "drawWxml preLoadImage error" }); |
|
}); |
|
} |
|
}, |
|
) |
|
.exec(); |
|
}); |
|
|
|
let p2 = new Promise((resolve, reject) => { |
|
if (!item.limit) { |
|
resolve({ top: 0, width: self.width / self.zoom }); |
|
} |
|
|
|
query |
|
.select(`${item.limit}`) |
|
.fields( |
|
{ |
|
dataset: true, |
|
size: true, |
|
rect: true, |
|
}, |
|
(res) => { |
|
resolve(res); |
|
}, |
|
) |
|
.exec(); |
|
}); |
|
|
|
return Promise.all([p1, p2]); |
|
} |
|
|
|
_getLineHeight(style) { |
|
let zoom = this.zoom; |
|
if (style.dataset && style.dataset.type) { |
|
zoom = 1; |
|
} |
|
let lineHeight; |
|
if (!isNaN(style.lineHeight) && style.lineHeight > style.fontSize) { |
|
lineHeight = style.lineHeight; |
|
} else { |
|
style.lineHeight = (style.lineHeight || "") + ""; |
|
lineHeight = +style.lineHeight.replace("px", ""); |
|
lineHeight = lineHeight ? lineHeight : (style.fontSize || 14) * 1.2; |
|
} |
|
return lineHeight * zoom; |
|
} |
|
|
|
_formatImage(res = []) { |
|
let list = []; |
|
res.forEach((item, index) => { |
|
let dataset = item.dataset; |
|
let uid = Util.getUid(); |
|
let filename = `${wx.env.USER_DATA_PATH}/${uid}.png`; |
|
if ((dataset.type === "image" || dataset.type === "radius-image") && dataset.url) { |
|
let sub = { |
|
url: dataset.base64 ? filename : dataset.url, |
|
isBase64: dataset.base64 ? dataset.url : false, |
|
}; |
|
|
|
res[index].dataset = Object.assign(res[index].dataset, sub); |
|
list.push(sub); |
|
} else if (dataset.type === "background-image" && item.backgroundImage.indexOf("url") > -1) { |
|
let url = item.backgroundImage.replace(/url\((\"|\')?/, "").replace(/(\"|\')?\)$/, ""); |
|
let sub = { |
|
url: dataset.base64 ? filename : url, |
|
isBase64: dataset.base64 ? url : false, |
|
}; |
|
res[index].dataset = Object.assign(res[index].dataset, sub); |
|
list.push(sub); |
|
} |
|
}); |
|
|
|
return { list, res }; |
|
} |
|
|
|
_updateProgress(distance) { |
|
this.progressPercent += distance; |
|
this.progress(this.progressPercent); |
|
} |
|
|
|
_sortListByTop(list = []) { |
|
let sorted = {}; |
|
|
|
// 粗略地认为2px相差的元素在同一行 |
|
list.forEach((item, index) => { |
|
let top = item.top; |
|
if (!sorted[top]) { |
|
if (sorted[top - 2]) { |
|
top = top - 2; |
|
} else if (sorted[top - 1]) { |
|
top = top - 1; |
|
} else if (sorted[top + 1]) { |
|
top = top + 1; |
|
} else if (sorted[top + 2]) { |
|
top = top + 2; |
|
} else { |
|
sorted[top] = []; |
|
} |
|
} |
|
sorted[top].push(item); |
|
}); |
|
|
|
return sorted; |
|
} |
|
|
|
_parseNumber(number) { |
|
return isNaN(number) ? +(number || "").replace("px", "") : number; |
|
} |
|
|
|
_transferWxmlStyle(sub, item, limitLeft, limitTop) { |
|
let leftFix = +sub.dataset.left || 0; |
|
let topFix = +sub.dataset.top || 0; |
|
|
|
sub.width = this._parseNumber(sub.width); |
|
sub.height = this._parseNumber(sub.height); |
|
sub.left = this._parseNumber(sub.left) - limitLeft + (leftFix + (item.x || 0)) * this.zoom; |
|
sub.top = this._parseNumber(sub.top) - limitTop + (topFix + (item.y || 0)) * this.zoom; |
|
|
|
let padding = sub.dataset.padding || "0 0 0 0"; |
|
if (typeof padding === "string") { |
|
padding = Util.transferPadding(padding); |
|
} |
|
let paddingTop = Number(sub.paddingTop.replace("px", "")) + Number(padding[0]); |
|
let paddingRight = Number(sub.paddingRight.replace("px", "")) + Number(padding[1]); |
|
let paddingBottom = Number(sub.paddingBottom.replace("px", "")) + Number(padding[2]); |
|
let paddingLeft = Number(sub.paddingLeft.replace("px", "")) + Number(padding[3]); |
|
sub.padding = [paddingTop, paddingRight, paddingBottom, paddingLeft]; |
|
|
|
return sub; |
|
} |
|
|
|
/** |
|
* 支持负值绘制，从右边计算 |
|
* @param {*} item |
|
* @param {*} style |
|
*/ |
|
_resetPositionX(item, style) { |
|
let zoom = this.zoom; |
|
let x = 0; |
|
|
|
if (style.dataset && style.dataset.type) { |
|
zoom = 1; |
|
} |
|
|
|
// 通过wxml获取的不需要重置坐标 |
|
if (item.x < 0 && item.type) { |
|
x = this.width + item.x * zoom - style.width * zoom; |
|
} else { |
|
x = item.x * zoom; |
|
} |
|
|
|
if (parseInt(style.borderWidth)) { |
|
x += parseInt(style.borderWidth); |
|
} |
|
|
|
return x + this.translateX; |
|
} |
|
|
|
/** |
|
* 支持负值绘制，从底部计算 |
|
* @param {*} item |
|
* @param {*} style |
|
*/ |
|
_resetPositionY(item, style, textHeight) { |
|
let zoom = this.zoom; |
|
let y = 0; |
|
|
|
if (style.dataset && style.dataset.type) { |
|
zoom = 1; |
|
} |
|
|
|
if (item.y < 0) { |
|
y = this.height + item.y * zoom - (textHeight ? textHeight : style.height * zoom); |
|
} else { |
|
y = item.y * zoom; |
|
} |
|
|
|
if (parseInt(style.borderWidth)) { |
|
y += parseInt(style.borderWidth); |
|
} |
|
|
|
return y + this.translateY; |
|
} |
|
|
|
/** |
|
* 文字的padding、text-align |
|
* @param {*} item |
|
* @param {*} style |
|
* @param {*} textWidth |
|
*/ |
|
_resetTextPositionX(item, style, textWidth, width) { |
|
let textAlign = style.textAlign || "left"; |
|
let x = item.x; |
|
if (textAlign === "center") { |
|
x = (width - textWidth) / 2 + item.x; |
|
} else if (textAlign === "right") { |
|
x = width - textWidth + item.x; |
|
} |
|
|
|
let left = style.padding ? style.padding[3] || 0 : 0; |
|
|
|
return x + left + this.translateX; |
|
} |
|
|
|
/** |
|
* 文字的padding、text-align |
|
* @param {*} item |
|
* @param {*} style |
|
* @param {*} textWidth |
|
*/ |
|
_resetTextPositionY(item, style, lineNum = 0) { |
|
let zoom = this.zoom; |
|
if (style.dataset && style.dataset.type) { |
|
zoom = 1; |
|
} |
|
|
|
let lineHeight = this._getLineHeight(style); |
|
let fontSize = Math.ceil((style.fontSize || 14) * zoom); |
|
|
|
let blockLineHeightFix = |
|
((style.dataset && style.dataset.type) || "").indexOf("inline") > -1 ? 0 : (lineHeight - fontSize) / 2; |
|
|
|
let top = style.padding ? style.padding[0] || 0 : 0; |
|
|
|
// y + lineheight偏移 + 行数 + paddingTop + 整体画布位移 |
|
return item.y + blockLineHeightFix + lineNum * lineHeight + top + this.translateY; |
|
} |
|
|
|
/** |
|
* 当文本超过宽度时，计算每一行应该绘制的文本 |
|
* @param {*} text |
|
* @param {*} width |
|
* @param {*} singleLength |
|
* @param {*} currentIndex |
|
* @param {*} widthOffset |
|
*/ |
|
_getTextSingleLine(text, width, singleLength, currentIndex = 0, widthOffset = 0) { |
|
let offset = 0; |
|
let endIndex = currentIndex + singleLength + offset; |
|
let single = text.substring(currentIndex, endIndex); |
|
let singleWidth = this.measureWidth(single); |
|
|
|
while (Math.round(widthOffset + singleWidth) > width) { |
|
offset--; |
|
endIndex = currentIndex + singleLength + offset; |
|
single = text.substring(currentIndex, endIndex); |
|
singleWidth = this.measureWidth(single); |
|
} |
|
|
|
return { |
|
endIndex, |
|
single, |
|
singleWidth, |
|
}; |
|
} |
|
|
|
_drawBorder(border, style, callback) { |
|
let zoom = this.zoom; |
|
if (style.dataset && style.dataset.type) { |
|
zoom = 1; |
|
} |
|
border = Util.transferBorder(border); |
|
|
|
if (border && border.width) { |
|
// 空白阴影，清空掉边框的阴影 |
|
this._drawBoxShadow(); |
|
if (border) { |
|
this.ctx.setLineWidth(border.width * zoom); |
|
|
|
if (border.style === "dashed") { |
|
let dash = style.dash || [5, 5, 0]; |
|
let offset = dash[2] || 0; |
|
let array = [dash[0] || 5, dash[1] || 5]; |
|
this.ctx.setLineDash(array, offset); |
|
} |
|
this.ctx.setStrokeStyle(border.color); |
|
} |
|
callback && callback(border); |
|
} |
|
} |
|
|
|
_drawBoxShadow(boxShadow, callback) { |
|
boxShadow = Util.transferBoxShadow(boxShadow); |
|
if (boxShadow) { |
|
this.ctx.setShadow(boxShadow.offsetX, boxShadow.offsetY, boxShadow.blur, boxShadow.color); |
|
} else { |
|
this.ctx.setShadow(0, 0, 0, "#ffffff"); |
|
} |
|
|
|
callback && callback(boxShadow || {}); |
|
} |
|
|
|
_setFill(fill, callback) { |
|
if (fill) { |
|
if (typeof fill === "string") { |
|
this.ctx.setFillStyle(fill); |
|
} else { |
|
let line = fill.line; |
|
let color = fill.color; |
|
let grd = this.ctx.createLinearGradient(line[0], line[1], line[2], line[3]); |
|
grd.addColorStop(0, color[0]); |
|
grd.addColorStop(1, color[1]); |
|
this.ctx.setFillStyle(grd); |
|
} |
|
callback && callback(); |
|
} |
|
} |
|
|
|
_setStroke(stroke, callback) { |
|
if (stroke) { |
|
if (typeof stroke === "string") { |
|
this.ctx.setStrokeStyle(stroke); |
|
} else { |
|
let line = stroke.line; |
|
let color = stroke.color; |
|
let grd = this.ctx.createLinearGradient(line[0], line[1], line[2], line[3]); |
|
grd.addColorStop(0, color[0]); |
|
grd.addColorStop(1, color[1]); |
|
this.ctx.setStrokeStyle(grd); |
|
} |
|
|
|
callback && callback(); |
|
} |
|
} |
|
} |
|
|
|
if (!exports.__esModule) Object.defineProperty(exports, "__esModule", { value: true }); |
|
exports.default = Wxml2Canvas; |
|
}, |
|
function (modId) { |
|
var map = { "./util": 1685064731948 }; |
|
return __REQUIRE__(map[modId], modId); |
|
}, |
|
); |
|
__DEFINE__( |
|
1685064731948, |
|
function (require, module, exports) { |
|
/** |
|
* 获取字符的长度，full为true时，一个汉字算两个长度 |
|
* @param {String} str |
|
* @param {Boolean} full |
|
*/ |
|
|
|
function getTextLength(str, full) { |
|
let len = 0; |
|
for (let i = 0; i < str.length; i++) { |
|
let c = str.charCodeAt(i); |
|
//单字节加1 |
|
if ((c >= 0x0001 && c <= 0x007e) || (0xff60 <= c && c <= 0xff9f)) { |
|
len++; |
|
} else { |
|
len += full ? 2 : 1; |
|
} |
|
} |
|
return len; |
|
} |
|
|
|
/** |
|
* rgba(255, 255, 255, 1) => #ffffff |
|
* @param {String} color |
|
*/ |
|
function transferColor(color = "") { |
|
let res = "#"; |
|
color = color.replace(/^rgba?\(/, "").replace(/\)$/, ""); |
|
color = color.split(", "); |
|
|
|
color.length > 3 ? (color.length = 3) : ""; |
|
for (let item of color) { |
|
item = parseInt(item || 0); |
|
if (item < 10) { |
|
res += "0" + item; |
|
} else { |
|
res += item.toString(16); |
|
} |
|
} |
|
|
|
return res; |
|
} |
|
|
|
function transferBorder(border = "") { |
|
let res = border.match(/(\w+)px\s(\w+)\s(.*)/); |
|
let obj = {}; |
|
|
|
if (res) { |
|
obj = { |
|
width: +res[1], |
|
style: res[2], |
|
color: res[3], |
|
}; |
|
} |
|
|
|
return res ? obj : null; |
|
} |
|
|
|
/** |
|
* 内边距，依次为上右下左 |
|
* @param {*} padding |
|
*/ |
|
function transferPadding(padding = "0 0 0 0") { |
|
padding = padding.split(" "); |
|
for (let i = 0, len = padding.length; i < len; i++) { |
|
padding[i] = +padding[i].replace("px", ""); |
|
} |
|
|
|
return padding; |
|
} |
|
/** |
|
* type1: 0, 25, 17, rgba(0, 0, 0, 0.3) |
|
* type2: rgba(0, 0, 0, 0.3) 0px 25px 17px 0px => (0, 25, 17, rgba(0, 0, 0, 0.3)) |
|
* @param {*} shadow |
|
*/ |
|
function transferBoxShadow(shadow = "", type) { |
|
if (!shadow || shadow === "none") return; |
|
let color; |
|
let split; |
|
|
|
split = shadow.match(/(\w+)\s(\w+)\s(\w+)\s(rgb.*)/); |
|
|
|
if (split) { |
|
split.shift(); |
|
shadow = split; |
|
color = split[3] || "#ffffff"; |
|
} else { |
|
split = shadow.split(") "); |
|
color = split[0] + ")"; |
|
shadow = split[1].split("px "); |
|
} |
|
|
|
return { |
|
offsetX: +shadow[0] || 0, |
|
offsetY: +shadow[1] || 0, |
|
blur: +shadow[2] || 0, |
|
color, |
|
}; |
|
} |
|
|
|
function getUid(prefix) { |
|
prefix = prefix || ""; |
|
|
|
return ( |
|
prefix + |
|
"xxyxxyxx".replace(/[xy]/g, (c) => { |
|
let r = (Math.random() * 16) | 0; |
|
let v = c === "x" ? r : (r & 0x3) | 0x8; |
|
return v.toString(16); |
|
}) |
|
); |
|
} |
|
|
|
if (!exports.__esModule) Object.defineProperty(exports, "__esModule", { value: true }); |
|
exports.default = { |
|
getTextLength, |
|
transferBorder, |
|
transferColor, |
|
transferPadding, |
|
transferBoxShadow, |
|
getUid, |
|
}; |
|
}, |
|
function (modId) { |
|
var map = {}; |
|
return __REQUIRE__(map[modId], modId); |
|
}, |
|
); |
|
return __REQUIRE__(1685064731946); |
|
})(); |
|
//miniprogram-npm-outsideDeps=[] |
|
//# sourceMappingURL=index.js.map
|
|
|