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291 lines
9.8 KiB
291 lines
9.8 KiB
/** |
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* 对DOM操作的通用函数 |
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* @type {{}} |
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*/ |
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!(function () { |
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BI.DOM = {}; |
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BI.extend(BI.DOM, { |
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|
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patchProps: function (fromElement, toElement) { |
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var elemData = jQuery._data(fromElement[0]); |
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var events = elemData.events; |
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BI.each(events, function (eventKey, event) { |
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BI.each(event, function (i, handler) { |
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toElement.on(eventKey + (handler.namespace ? ("." + handler.namespace) : ""), handler); |
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}); |
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}); |
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var fromChildren = fromElement.children(), toChildren = toElement.children(); |
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if(fromChildren.length !== toChildren.length) { |
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throw new Error("不匹配"); |
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} |
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BI.each(fromChildren, function (i, child) { |
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BI.DOM.patchProps(jQuery(child), jQuery(toChildren[i])); |
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}); |
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BI.each(fromElement.data("__widgets"), function (i, widget) { |
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widget.element = toElement; |
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}); |
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}, |
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/** |
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* 把dom数组或元素悬挂起来,使其不对html产生影响 |
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* @param dom |
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*/ |
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hang: function (doms) { |
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if (BI.isEmpty(doms)) { |
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return; |
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} |
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var frag = BI.Widget._renderEngine.createFragment(); |
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BI.each(doms, function (i, dom) { |
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dom instanceof BI.Widget && (dom = dom.element); |
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dom instanceof $ && dom[0] && frag.appendChild(dom[0]); |
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}); |
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return frag; |
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}, |
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isExist: function (obj) { |
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return BI.Widget._renderEngine.createElement("body").find(obj.element).length > 0; |
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}, |
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// 预加载图片 |
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preloadImages: function (srcArray, onload) { |
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var count = 0, images = []; |
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function complete () { |
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count++; |
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if (count >= srcArray.length) { |
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onload(); |
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} |
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} |
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BI.each(srcArray, function (i, src) { |
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images[i] = new Image(); |
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images[i].src = src; |
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images[i].onload = function () { |
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complete(); |
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}; |
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images[i].onerror = function () { |
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complete(); |
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}; |
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}); |
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}, |
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isColor: function (color) { |
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return color && (this.isRGBColor(color) || this.isHexColor(color)); |
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}, |
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isRGBColor: function (color) { |
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if (!color) { |
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return false; |
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} |
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return color.substr(0, 3) === "rgb"; |
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}, |
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isHexColor: function (color) { |
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if (!color) { |
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return false; |
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} |
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return color[0] === "#" && color.length === 7; |
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}, |
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isDarkColor: function (hex) { |
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if (!hex || !this.isHexColor(hex)) { |
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return false; |
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} |
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var rgb = this.rgb2json(this.hex2rgb(hex)); |
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var grayLevel = Math.round(rgb.r * 0.299 + rgb.g * 0.587 + rgb.b * 0.114); |
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if (grayLevel < 192/** 网上给的是140**/) { |
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return true; |
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} |
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return false; |
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}, |
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// 获取对比颜色 |
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getContrastColor: function (color) { |
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if (!color || !this.isColor(color)) { |
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return ""; |
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} |
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if (this.isDarkColor(color)) { |
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return "#ffffff"; |
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} |
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return "#1a1a1a"; |
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}, |
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rgb2hex: function (rgbColour) { |
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if (!rgbColour || rgbColour.substr(0, 3) != "rgb") { |
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return ""; |
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} |
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var rgbValues = rgbColour.match(/\d+(\.\d+)?/g); |
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var red = BI.parseInt(rgbValues[0]); |
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var green = BI.parseInt(rgbValues[1]); |
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var blue = BI.parseInt(rgbValues[2]); |
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var hexColour = "#" + this.int2hex(red) + this.int2hex(green) + this.int2hex(blue); |
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return hexColour; |
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}, |
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rgb2json: function (rgbColour) { |
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if (!rgbColour) { |
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return {}; |
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} |
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if (!this.isRGBColor(rgbColour)) { |
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return {}; |
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} |
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var rgbValues = rgbColour.match(/\d+(\.\d+)?/g); |
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return { |
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r: BI.parseInt(rgbValues[0]), |
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g: BI.parseInt(rgbValues[1]), |
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b: BI.parseInt(rgbValues[2]) |
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}; |
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}, |
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rgba2json: function (rgbColour) { |
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if (!rgbColour) { |
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return {}; |
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} |
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var rgbValues = rgbColour.match(/\d+(\.\d+)?/g); |
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return { |
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r: BI.parseInt(rgbValues[0]), |
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g: BI.parseInt(rgbValues[1]), |
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b: BI.parseInt(rgbValues[2]), |
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a: BI.parseFloat(rgbValues[3]) |
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}; |
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}, |
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json2rgb: function (rgb) { |
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if (!BI.isKey(rgb.r) || !BI.isKey(rgb.g) || !BI.isKey(rgb.b)) { |
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return ""; |
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} |
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return "rgb(" + rgb.r + "," + rgb.g + "," + rgb.b + ")"; |
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}, |
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json2rgba: function (rgba) { |
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if (!BI.isKey(rgba.r) || !BI.isKey(rgba.g) || !BI.isKey(rgba.b)) { |
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return ""; |
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} |
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return "rgba(" + rgba.r + "," + rgba.g + "," + rgba.b + "," + rgba.a + ")"; |
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}, |
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int2hex: function (strNum) { |
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var hexdig = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"]; |
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return hexdig[strNum >>> 4] + "" + hexdig[strNum & 15]; |
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}, |
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hex2rgb: function (color) { |
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if (!color) { |
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return ""; |
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} |
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if (!this.isHexColor(color)) { |
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return color; |
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} |
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var tempValue = "rgb(", colorArray; |
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if (color.length === 7) { |
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colorArray = [BI.parseInt("0x" + color.substring(1, 3)), |
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BI.parseInt("0x" + color.substring(3, 5)), |
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BI.parseInt("0x" + color.substring(5, 7))]; |
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} else if (color.length === 4) { |
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colorArray = [BI.parseInt("0x" + color.substring(1, 2)), |
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BI.parseInt("0x" + color.substring(2, 3)), |
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BI.parseInt("0x" + color.substring(3, 4))]; |
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} |
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tempValue += colorArray[0] + ","; |
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tempValue += colorArray[1] + ","; |
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tempValue += colorArray[2] + ")"; |
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return tempValue; |
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}, |
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rgba2rgb: function (rgbColour, BGcolor) { |
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if (BI.isNull(BGcolor)) { |
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BGcolor = 1; |
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} |
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if (rgbColour.substr(0, 4) != "rgba") { |
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return ""; |
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} |
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var rgbValues = rgbColour.match(/\d+(\.\d+)?/g); |
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if (rgbValues.length < 4) { |
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return ""; |
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} |
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var R = BI.parseFloat(rgbValues[0]); |
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var G = BI.parseFloat(rgbValues[1]); |
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var B = BI.parseFloat(rgbValues[2]); |
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var A = BI.parseFloat(rgbValues[3]); |
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return "rgb(" + Math.floor(255 * (BGcolor * (1 - A )) + R * A) + "," + |
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Math.floor(255 * (BGcolor * (1 - A )) + G * A) + "," + |
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Math.floor(255 * (BGcolor * (1 - A )) + B * A) + ")"; |
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}, |
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getTextSizeWidth: function (text, fontSize) { |
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var span = BI.Widget._renderEngine.createElement("<span></span>").addClass("text-width-span").appendTo("body"); |
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if (fontSize == null) { |
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fontSize = 12; |
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} |
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fontSize = fontSize + "px"; |
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span.css("font-size", fontSize).text(text); |
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var width = span.width(); |
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span.remove(); |
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return width; |
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}, |
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getTextSizeHeight: function (text, fontSize) { |
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var span = BI.Widget._renderEngine.createElement("<span></span>").addClass("text-width-span").appendTo("body"); |
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if (fontSize == null) { |
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fontSize = 12; |
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} |
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fontSize = fontSize + "px"; |
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span.css("font-size", fontSize).text(text); |
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var height = span.height(); |
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span.remove(); |
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return height; |
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}, |
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// 获取滚动条的宽度 |
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getScrollWidth: function () { |
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if (this._scrollWidth == null) { |
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var ul = BI.Widget._renderEngine.createElement("<div>").width(50).height(50).css({ |
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position: "absolute", |
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top: "-9999px", |
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overflow: "scroll" |
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}).appendTo("body"); |
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this._scrollWidth = ul[0].offsetWidth - ul[0].clientWidth; |
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ul.destroy(); |
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} |
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return this._scrollWidth; |
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}, |
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getImage: function (param, fillStyle, backgroundColor) { |
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var canvas = document.createElement("canvas"); |
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var ratio = 2; |
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BI.Widget._renderEngine.createElement("body").append(canvas); |
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var w = BI.DOM.getTextSizeWidth(param, 12) + 4; |
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canvas.width = w * ratio; |
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canvas.height = 16 * ratio; |
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var ctx = canvas.getContext("2d"); |
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// ctx.fillStyle = "#EAF2FD"; |
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ctx.font = 12 * ratio + "px Georgia"; |
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ctx.fillStyle = fillStyle || "#3685f2"; |
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ctx.textBaseline = "middle"; |
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ctx.fillText(param, 2 * ratio, 9 * ratio); |
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BI.Widget._renderEngine.createElement(canvas).destroy(); |
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var backColor = backgroundColor || "rgba(54, 133, 242, 0.1)"; |
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// IE可以放大缩小所以要固定最大最小宽高 |
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return { |
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width: w, |
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height: 16, |
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src: canvas.toDataURL("image/png"), |
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style: "background-color: " + backColor + ";vertical-align: middle; margin: 0 1px; width:" + w + "px;height: 16px; max-width:" + w + "px;max-height: 16px; min-width:" + w + "px;min-height: 16px", |
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param: param |
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}; |
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} |
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}); |
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})(); |