.htc文件的使用
=.= what? .htc
可以先看下这个:
https://github.com/xufei/blog/issues/3?spm=5176.100239.blogcont78117.10.HE6Acs
html compenent.; IE5时候开始引入的新技术,然而IE10废弃了,恩,对废弃了。
但是目前产品都要求兼容到IE8,学习学习也不是坏处,学习不要太功利心嘛~ *(宝宝还能怎么说呢)
HTC 代表 现在还在使用的如这个:
ie-css3.htc 可以让低版本的浏览器支持部分css3属性的htc文件 ,没找到cdn 代码直接复制到下方了
组成
它由两部分组成,定义部分写在.htc文件中的(MIME为text/x-component),由HTC独有标签,JS和全局对象(element,window等组成);而应用部分则是写在html文件中,通过css的behavior规则附加到特定的元素上。
定义部分
**HTC独有标签**
_PUBLIC:COMPONENT
, 根节点._
_PUBLIC:PROPERTY
, 定义元素公开自定义属性/特性._
属性
NAME
,html文件中使用的属性名
INTERNALNAME
,htc文件内使用的属性名,默认与NAME
一致
VALUE
,属性默认值
PUT
,setter对应的函数名
GET
,getter对应的函数名
_PUBLIC:EVENT
, 定义元素公开自定义事件._
属性
NAME
,公开事件名称,如onheadingchange
ID
,htc内使用的事件名称,如ohc.然后通过ohc.fire(createEventObject())
来触发事件
_PUBLIC:ATTACH
,订阅事件_
属性
EVENT
,订阅的事件名称,如onheadingchange
ONEVENT
,事件处理函数体,如headingchangehandler()
FOR
,事件发生的宿主(element
,document
,window
,默认是element
)
_PUBLIC:METHOD
, 定义元素公开方法_
属性
NAME
,html文件中使用的方法名
INTERNALNAME
,htc文件内使用的方法名,默认与NAME
一致。在JScript中实现具体的方法体
_PUBLIC:DEFAULTS
,设置HTC默认配置_
**HTC生命周期事件**ondocumentready
, 添加到DOM tree时触发,在oncontentready后触发oncontentready
, 添加到DOM tree时触发ondetach
, 脱离DOM tree时触发, 刷新页面时也会触发oncontentsave
, 当复制(ctrl-c)element内容时触发
**HTC全局对象**element
, 所附加到的元素实例runtimeStyle
,所附加到的元素实例的style属性document
,html的文档对象
**HTC全局函数**createEventObject()
,创建事件对象attachEvent(evtName, handler)
, 订阅事件.注意:一般不建议使用attachEvent来订阅事件,采用<PUBLIC:ATTACH>
来订阅事件,它会自动帮我们执行detach操作,避免内存泄露.detachEvent(evtName[, handler])
, 取消订阅事件
--Do not remove this if you are using-- Original Author: Remiz Rahnas Original Author URL: http://www.htmlremix.com Published date: 2008/09/24 Changes by Nick Fetchak: - IE8 standards mode compatibility - VML elements now positioned behind original box rather than inside of it - should be less prone to breakage - Added partial support for 'box-shadow' style - Checks for VML support before doing anything - Updates VML element size and position via timer and also via window resize event - lots of other small things Published date : 2010/03/14 http://fetchak.com/ie-css3 Thanks to TheBrightLines.com (http://www.thebrightlines.com/2009/12/03/using-ies-filter-in-a-cross-browser-way) for enlightening me about the DropShadow filter <public:attach event="ondocumentready" onevent="ondocumentready('v08vnSVo78t4JfjH')" /> <script type="text/javascript"> timer_length = 200; // Milliseconds border_opacity = false; // Use opacity on borders of rounded-corner elements? Note: This causes antialiasing issues // supportsVml() borrowed from http://stackoverflow.com/questions/654112/how-do-you-detect-support-for-vml-or-svg-in-a-browser function supportsVml() { if (typeof supportsVml.supported == "undefined") { var a = document.body.appendChild(document.createElement('div')); a.innerHTML = '<v:shape id="vml_flag1" adj="1" />'; var b = a.firstChild; b.style.behavior = "url(#default#VML)"; supportsVml.supported = b ? typeof b.adj == "object": true; a.parentNode.removeChild(a); } return supportsVml.supported } // findPos() borrowed from http://www.quirksmode.org/js/findpos.html function findPos(obj) { var curleft = curtop = 0; if (obj.offsetParent) { do { curleft += obj.offsetLeft; curtop += obj.offsetTop; } while (obj = obj.offsetParent); } return({ 'x': curleft, 'y': curtop }); } function createBoxShadow(element, vml_parent) { var style = element.currentStyle['iecss3-box-shadow'] || element.currentStyle['-moz-box-shadow'] || element.currentStyle['-webkit-box-shadow'] || element.currentStyle['box-shadow'] || ''; var match = style.match(/^(\d+)px (\d+)px (\d+)px/); if (!match) { return(false); } var shadow = document.createElement('v:roundrect'); shadow.userAttrs = { 'x': parseInt(RegExp.$1 || 0), 'y': parseInt(RegExp.$2 || 0), 'radius': parseInt(RegExp.$3 || 0) / 2 }; shadow.position_offset = { 'y': (0 - vml_parent.pos_ieCSS3.y - shadow.userAttrs.radius + shadow.userAttrs.y), 'x': (0 - vml_parent.pos_ieCSS3.x - shadow.userAttrs.radius + shadow.userAttrs.x) }; shadow.size_offset = { 'width': 0, 'height': 0 }; shadow.arcsize = element.arcSize +'px'; shadow.style.display = 'block'; shadow.style.position = 'absolute'; shadow.style.top = (element.pos_ieCSS3.y + shadow.position_offset.y) +'px'; shadow.style.left = (element.pos_ieCSS3.x + shadow.position_offset.x) +'px'; shadow.style.width = element.offsetWidth +'px'; shadow.style.height = element.offsetHeight +'px'; shadow.style.antialias = true; shadow.className = 'vml_box_shadow'; shadow.style.zIndex = element.zIndex - 1; shadow.style.filter = 'progid:DXImageTransform.Microsoft.Blur(pixelRadius='+ shadow.userAttrs.radius +',makeShadow=true,shadowOpacity='+ element.opacity +')'; element.parentNode.appendChild(shadow); //element.parentNode.insertBefore(shadow, element.element); // For window resizing element.vml.push(shadow); return(true); } function createBorderRect(element, vml_parent) { if (isNaN(element.borderRadius)) { return(false); } element.style.background = 'transparent'; element.style.borderColor = 'transparent'; var rect = document.createElement('v:roundrect'); rect.position_offset = { 'y': (0.5 * element.strokeWeight) - vml_parent.pos_ieCSS3.y, 'x': (0.5 * element.strokeWeight) - vml_parent.pos_ieCSS3.x }; rect.size_offset = { 'width': 0 - element.strokeWeight, 'height': 0 - element.strokeWeight }; rect.arcsize = element.arcSize +'px'; rect.strokeColor = element.strokeColor; rect.strokeWeight = element.strokeWeight +'px'; rect.stroked = element.stroked; rect.className = 'vml_border_radius'; rect.style.display = 'block'; rect.style.position = 'absolute'; rect.style.top = (element.pos_ieCSS3.y + rect.position_offset.y) +'px'; rect.style.left = (element.pos_ieCSS3.x + rect.position_offset.x) +'px'; rect.style.width = (element.offsetWidth + rect.size_offset.width) +'px'; rect.style.height = (element.offsetHeight + rect.size_offset.height) +'px'; rect.style.antialias = true; rect.style.zIndex = element.zIndex - 1; if (border_opacity && (element.opacity < 1)) { rect.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(Opacity='+ parseFloat(element.opacity * 100) +')'; } var fill = document.createElement('v:fill'); fill.color = element.fillColor; fill.src = element.fillSrc; fill.className = 'vml_border_radius_fill'; fill.type = 'tile'; fill.opacity = element.opacity; // Hack: IE6 doesn't support transparent borders, use padding to offset original element isIE6 = /msie|MSIE 6/.test(navigator.userAgent); if (isIE6 && (element.strokeWeight > 0)) { element.style.borderStyle = 'none'; element.style.paddingTop = parseInt(element.currentStyle.paddingTop || 0) + element.strokeWeight; element.style.paddingBottom = parseInt(element.currentStyle.paddingBottom || 0) + element.strokeWeight; } rect.appendChild(fill); element.parentNode.appendChild(rect); //element.parentNode.insertBefore(rect, element.element); // For window resizing element.vml.push(rect); return(true); } function createTextShadow(element, vml_parent) { if (!element.textShadow) { return(false); } var match = element.textShadow.match(/^(\d+)px (\d+)px (\d+)px (#?\w+)/); if (!match) { return(false); } //var shadow = document.createElement('span'); var shadow = element.cloneNode(true); var radius = parseInt(RegExp.$3 || 0); shadow.userAttrs = { 'x': parseInt(RegExp.$1 || 0) - (radius), 'y': parseInt(RegExp.$2 || 0) - (radius), 'radius': radius / 2, 'color': (RegExp.$4 || '#000') }; shadow.position_offset = { 'y': (0 - vml_parent.pos_ieCSS3.y + shadow.userAttrs.y), 'x': (0 - vml_parent.pos_ieCSS3.x + shadow.userAttrs.x) }; shadow.size_offset = { 'width': 0, 'height': 0 }; shadow.style.color = shadow.userAttrs.color; shadow.style.position = 'absolute'; shadow.style.top = (element.pos_ieCSS3.y + shadow.position_offset.y) +'px'; shadow.style.left = (element.pos_ieCSS3.x + shadow.position_offset.x) +'px'; shadow.style.antialias = true; shadow.style.behavior = null; shadow.className = 'ieCSS3_text_shadow'; shadow.innerHTML = element.innerHTML; // For some reason it only looks right with opacity at 75% shadow.style.filter = '\ progid:DXImageTransform.Microsoft.Alpha(Opacity=75)\ progid:DXImageTransform.Microsoft.Blur(pixelRadius='+ shadow.userAttrs.radius +',makeShadow=false,shadowOpacity=100)\ '; var clone = element.cloneNode(true); clone.position_offset = { 'y': (0 - vml_parent.pos_ieCSS3.y), 'x': (0 - vml_parent.pos_ieCSS3.x) }; clone.size_offset = { 'width': 0, 'height': 0 }; clone.style.behavior = null; clone.style.position = 'absolute'; clone.style.top = (element.pos_ieCSS3.y + clone.position_offset.y) +'px'; clone.style.left = (element.pos_ieCSS3.x + clone.position_offset.x) +'px'; clone.className = 'ieCSS3_text_shadow'; element.parentNode.appendChild(shadow); element.parentNode.appendChild(clone); element.style.visibility = 'hidden'; // For window resizing element.vml.push(clone); element.vml.push(shadow); return(true); } function ondocumentready(classID) { if (!supportsVml()) { return(false); } if (this.className.match(classID)) { return(false); } this.className = this.className.concat(' ', classID); // Add a namespace for VML (IE8 requires it) if (!document.namespaces.v) { document.namespaces.add("v", "urn:schemas-microsoft-com:vml"); } // Check to see if we've run once before on this page if (typeof(window.ieCSS3) == 'undefined') { // Create global ieCSS3 object window.ieCSS3 = { 'vmlified_elements': new Array(), 'update_timer': setInterval(updatePositionAndSize, timer_length) }; if (typeof(window.onresize) == 'function') { window.ieCSS3.previous_onresize = window.onresize; } // Attach window resize event window.onresize = updatePositionAndSize; } // These attrs are for the script and have no meaning to the browser: this.borderRadius = parseInt(this.currentStyle['iecss3-border-radius'] || this.currentStyle['-moz-border-radius'] || this.currentStyle['-webkit-border-radius'] || this.currentStyle['border-radius'] || this.currentStyle['-khtml-border-radius']); this.arcSize = Math.min(this.borderRadius / Math.min(this.offsetWidth, this.offsetHeight), 1); this.fillColor = this.currentStyle.backgroundColor; this.fillSrc = this.currentStyle.backgroundImage.replace(/^url\("(.+)"\)$/, '$1'); this.strokeColor = this.currentStyle.borderColor; this.strokeWeight = parseInt(this.currentStyle.borderWidth); this.stroked = 'true'; if (isNaN(this.strokeWeight) || (this.strokeWeight == 0)) { this.strokeWeight = 0; this.strokeColor = fillColor; this.stroked = 'false'; } this.opacity = parseFloat(this.currentStyle.opacity || 1); this.textShadow = this.currentStyle['text-shadow']; this.element.vml = new Array(); this.zIndex = parseInt(this.currentStyle.zIndex); if (isNaN(this.zIndex)) { this.zIndex = 0; } // Find which element provides position:relative for the target element (default to BODY) vml_parent = this; var limit = 100, i = 0; do { vml_parent = vml_parent.parentElement; i++; if (i >= limit) { return(false); } } while ((typeof(vml_parent) != 'undefined') && (vml_parent.currentStyle.position != 'relative') && (vml_parent.tagName != 'BODY')); vml_parent.pos_ieCSS3 = findPos(vml_parent); this.pos_ieCSS3 = findPos(this); var rv1 = createBoxShadow(this, vml_parent); var rv2 = createBorderRect(this, vml_parent); var rv3 = createTextShadow(this, vml_parent); if (rv1 || rv2 || rv3) { window.ieCSS3.vmlified_elements.push(this.element); } if (typeof(vml_parent.document.ieCSS3_stylesheet) == 'undefined') { vml_parent.document.ieCSS3_stylesheet = vml_parent.document.createStyleSheet(); vml_parent.document.ieCSS3_stylesheet.addRule("v\\:roundrect", "behavior: url(#default#VML)"); vml_parent.document.ieCSS3_stylesheet.addRule("v\\:fill", "behavior: url(#default#VML)"); // Compatibility with IE7.js vml_parent.document.ieCSS3_stylesheet.ie7 = true; } } function updatePositionAndSize() { if (typeof(window.ieCSS3.vmlified_elements) != 'object') { return(false); } for (var i in window.ieCSS3.vmlified_elements) { var el = window.ieCSS3.vmlified_elements[i]; if (typeof(el.vml) != 'object') { continue; } for (var z in el.vml) { //var parent_pos = findPos(el.vml[z].parentNode); var new_pos = findPos(el); new_pos.x = (new_pos.x + el.vml[z].position_offset.x) + 'px'; new_pos.y = (new_pos.y + el.vml[z].position_offset.y) + 'px'; if (el.vml[z].style.left != new_pos.x) { el.vml[z].style.left = new_pos.x; } if (el.vml[z].style.top != new_pos.y) { el.vml[z].style.top = new_pos.y; } var new_size = { 'width': parseInt(el.offsetWidth + el.vml[z].size_offset.width), 'height': parseInt(el.offsetHeight + el.vml[z].size_offset.height) } if (el.vml[z].offsetWidth != new_size.width) { el.vml[z].style.width = new_size.width +'px'; } if (el.vml[z].offsetHeight != new_size.height) { el.vml[z].style.height = new_size.height +'px'; } } } if (event && (event.type == 'resize') && typeof(window.ieCSS3.previous_onresize) == 'function') { window.ieCSS3.previous_onresize(); } } </script>