Home > Article > Web Front-end > Image rotation, mouse wheel zoom, mirroring, image switching js code_javascript skills
Image rotation, mouse wheel zoom, mirroring, image switching js code_javascript skills
- WBOYOriginal
- 2016-05-16 15:19:371579browse
本文实例为大家展示了图片旋转、鼠标滚轮缩放、镜像、切换图片多重效果，提供了详细的代码，分享给大家供大家参考，具体内容如下
具体代码：
<!DOCTYPE html>
<html lang="zh-cn">
<head>
<title>图片旋转,鼠标滚轮缩放,镜像,切换图片</title>
<meta charset="utf-8" />
<!--<script type="text/javascript" src="js/jquery-1.11.1.min.js"></script>-->
<script type="text/javascript" src="js/abc.js"></script>
</head>
<body>
<h1 style="text-align: center;color: blue;">效果预览</h1>
<script>
//容器对象
var ImageTrans = function(container, options) {
this._initialize(container, options);
this._initMode();
if (this._support) {
this._initContainer();
this._init();
} else { //模式不支持
this.onError("not support");
}
};
ImageTrans.prototype = {
//初始化程序
_initialize: function(container, options) {
var container = this._container = $$(container);
this._clientWidth = container.clientWidth; //变换区域宽度
this._clientHeight = container.clientHeight; //变换区域高度
this._img = new Image(); //图片对象
this._style = {}; //备份样式
this._x = this._y = 1; //水平/垂直变换参数
this._radian = 0; //旋转变换参数
this._support = false; //是否支持变换
this._init = this._load = this._show = this._dispose = $$.emptyFunction;
var opt = this._setOptions(options);
this._zoom = opt.zoom;
this.onPreLoad = opt.onPreLoad;
this.onLoad = opt.onLoad;
this.onError = opt.onError;
this._LOAD = $$F.bind(function() {
this.onLoad();
this._load();
this.reset();
this._img.style.visibility = "visible";
}, this);
$$CE.fireEvent(this, "init");
},
//设置默认属性
_setOptions: function(options) {
this.options = { //默认值
mode: "css3|filter|canvas",
zoom: .1, //缩放比率
onPreLoad: function() {}, //图片加载前执行
onLoad: function() {}, //图片加载后执行
onError: function(err) {} //出错时执行
};
return $$.extend(this.options, options || {});
},
//模式设置
_initMode: function() {
var modes = ImageTrans.modes;
this._support = $$A.some(this.options.mode.toLowerCase().split("|"), function(mode) {
mode = modes[mode];
if (mode && mode.support) {
mode.init && (this._init = mode.init); //初始化执行程序
mode.load && (this._load = mode.load); //加载图片执行程序
mode.show && (this._show = mode.show); //变换显示程序
mode.dispose && (this._dispose = mode.dispose); //销毁程序
//扩展变换方法
$$A.forEach(ImageTrans.transforms, function(transform, name) {
this[name] = function() {
transform.apply(this, [].slice.call(arguments));
this._show();
}
}, this);
return true;
}
}, this);
},
//初始化容器对象
_initContainer: function() {
var container = this._container,
style = container.style,
position = $$D.getStyle(container, "position");
this._style = {
"position": style.position,
"overflow": style.overflow
}; //备份样式
if (position != "relative" && position != "absolute") {
style.position = "relative";
}
style.overflow = "hidden";
$$CE.fireEvent(this, "initContainer");
},
//加载图片
load: function(src) {
if (this._support) {
var img = this._img,
oThis = this;
img.onload || (img.onload = this._LOAD);
img.onerror || (img.onerror = function() {
oThis.onError("err image");
});
img.style.visibility = "hidden";
this.onPreLoad();
img.src = src;
}
},
//重置
reset: function() {
if (this._support) {
this._x = this._y = 1;
this._radian = 0;
this._show();
}
},
//销毁程序
dispose: function() {
if (this._support) {
this._dispose();
$$CE.fireEvent(this, "dispose");
$$D.setStyle(this._container, this._style); //恢复样式
this._container = this._img = this._img.onload = this._img.onerror = this._LOAD = null;
}
}
};
//变换模式
ImageTrans.modes = function() {
var css3Transform; //ccs3变换样式
//初始化图片对象函数
function initImg(img, container) {
$$D.setStyle(img, {
position: "absolute",
border: 0,
padding: 0,
margin: 0,
width: "auto",
height: "auto", //重置样式
visibility: "hidden" //加载前隐藏
});
container.appendChild(img);
}
//获取变换参数函数
function getMatrix(radian, x, y) {
var Cos = Math.cos(radian),
Sin = Math.sin(radian);
return {
M11: Cos * x,
M12: -Sin * y,
M21: Sin * x,
M22: Cos * y
};
}
return {
css3: { //css3设置
support: function() {
var style = document.createElement("div").style;
return $$A.some(
["transform", "MozTransform", "webkitTransform", "OTransform"],
function(css) {
if (css in style) {
css3Transform = css;
return true;
}
});
}(),
init: function() {
initImg(this._img, this._container);
},
load: function() {
var img = this._img;
$$D.setStyle(img, { //居中
top: (this._clientHeight - img.height) / 2 + "px",
left: (this._clientWidth - img.width) / 2 + "px",
visibility: "visible"
});
},
show: function() {
var matrix = getMatrix(this._radian, this._y, this._x);
//设置变形样式
this._img.style[css3Transform] = "matrix(" + matrix.M11.toFixed(16) + "," + matrix.M21.toFixed(16) + "," + matrix.M12.toFixed(16) + "," + matrix.M22.toFixed(16) + ", 0, 0)";
},
dispose: function() {
this._container.removeChild(this._img);
}
},
filter: { //滤镜设置
support: function() {
return "filters" in document.createElement("div");
}(),
init: function() {
initImg(this._img, this._container);
//设置滤镜
this._img.style.filter = "progid:DXImageTransform.Microsoft.Matrix(SizingMethod='auto expand')";
},
load: function() {
this._img.onload = null; //防止ie重复加载gif的bug
this._img.style.visibility = "visible";
},
show: function() {
var img = this._img;
//设置滤镜
$$.extend(
img.filters.item("DXImageTransform.Microsoft.Matrix"),
getMatrix(this._radian, this._y, this._x)
);
//保持居中
img.style.top = (this._clientHeight - img.offsetHeight) / 2 + "px";
img.style.left = (this._clientWidth - img.offsetWidth) / 2 + "px";
},
dispose: function() {
this._container.removeChild(this._img);
}
},
canvas: { //canvas设置
support: function() {
return "getContext" in document.createElement('canvas');
}(),
init: function() {
var canvas = this._canvas = document.createElement('canvas'),
context = this._context = canvas.getContext('2d');
//样式设置
$$D.setStyle(canvas, {
position: "absolute",
left: 0,
top: 0
});
canvas.width = this._clientWidth;
canvas.height = this._clientHeight;
this._container.appendChild(canvas);
},
show: function() {
var img = this._img,
context = this._context,
clientWidth = this._clientWidth,
clientHeight = this._clientHeight;
//canvas变换
context.save();
context.clearRect(0, 0, clientWidth, clientHeight); //清空内容
context.translate(clientWidth / 2, clientHeight / 2); //中心坐标
context.rotate(this._radian); //旋转
context.scale(this._y, this._x); //缩放
context.drawImage(img, -img.width / 2, -img.height / 2); //居中画图
context.restore();
},
dispose: function() {
this._container.removeChild(this._canvas);
this._canvas = this._context = null;
}
}
};
}();
//变换方法
ImageTrans.transforms = {
//垂直翻转
vertical: function() {
this._radian = Math.PI - this._radian;
this._y *= -1;
},
//水平翻转
horizontal: function() {
this._radian = Math.PI - this._radian;
this._x *= -1;
},
//根据弧度旋转
rotate: function(radian) {
this._radian = radian;
},
//向左转90度
left: function() {
this._radian -= Math.PI / 2;
},
//向右转90度
right: function() {
this._radian += Math.PI / 2;
},
//根据角度旋转
rotatebydegress: function(degress) {
this._radian = degress * Math.PI / 180;
},
//缩放
scale: function() {
function getZoom(scale, zoom) {
return scale > 0 && scale > -zoom ? zoom :
scale < 0 && scale < zoom ? -zoom : 0;
}
return function(zoom) {
if (zoom) {
var hZoom = getZoom(this._y, zoom),
vZoom = getZoom(this._x, zoom);
if (hZoom && vZoom) {
this._y += hZoom;
this._x += vZoom;
}
}
}
}(),
//放大
zoomin: function() {
this.scale(Math.abs(this._zoom));
},
//缩小
zoomout: function() {
this.scale(-Math.abs(this._zoom));
}
};
//拖动旋转
ImageTrans.prototype._initialize = (function() {
var init = ImageTrans.prototype._initialize,
methods = {
"init": function() {
this._mrX = this._mrY = this._mrRadian = 0;
this._mrSTART = $$F.bind(start, this);
this._mrMOVE = $$F.bind(move, this);
this._mrSTOP = $$F.bind(stop, this);
},
"initContainer": function() {
$$E.addEvent(this._container, "mousedown", this._mrSTART);
},
"dispose": function() {
$$E.removeEvent(this._container, "mousedown", this._mrSTART);
this._mrSTOP();
this._mrSTART = this._mrMOVE = this._mrSTOP = null;
}
};
//开始函数
function start(e) {
var rect = $$D.clientRect(this._container);
this._mrX = rect.left + this._clientWidth / 2;
this._mrY = rect.top + this._clientHeight / 2;
this._mrRadian = Math.atan2(e.clientY - this._mrY, e.clientX - this._mrX) - this._radian;
$$E.addEvent(document, "mousemove", this._mrMOVE);
$$E.addEvent(document, "mouseup", this._mrSTOP);
if ($$B.ie) {
var container = this._container;
$$E.addEvent(container, "losecapture", this._mrSTOP);
container.setCapture();
} else {
$$E.addEvent(window, "blur", this._mrSTOP);
e.preventDefault();
}
};
//拖动函数
function move(e) {
this.rotate(Math.atan2(e.clientY - this._mrY, e.clientX - this._mrX) - this._mrRadian);
window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty();
};
//停止函数
function stop() {
$$E.removeEvent(document, "mousemove", this._mrMOVE);
$$E.removeEvent(document, "mouseup", this._mrSTOP);
if ($$B.ie) {
var container = this._container;
$$E.removeEvent(container, "losecapture", this._mrSTOP);
container.releaseCapture();
} else {
$$E.removeEvent(window, "blur", this._mrSTOP);
};
};
return function() {
var options = arguments[1];
if (!options || options.mouseRotate !== false) {
//扩展钩子
$$A.forEach(methods, function(method, name) {
$$CE.addEvent(this, name, method);
}, this);
}
init.apply(this, arguments);
}
})();
//滚轮缩放
ImageTrans.prototype._initialize = (function() {
var init = ImageTrans.prototype._initialize,
mousewheel = $$B.firefox ? "DOMMouseScroll" : "mousewheel",
methods = {
"init": function() {
this._mzZoom = $$F.bind(zoom, this);
},
"initContainer": function() {
$$E.addEvent(this._container, mousewheel, this._mzZoom);
},
"dispose": function() {
$$E.removeEvent(this._container, mousewheel, this._mzZoom);
this._mzZoom = null;
}
};
//缩放函数
function zoom(e) {
this.scale((
e.wheelDelta ? e.wheelDelta / (-120) : (e.detail || 0) / 3
) * Math.abs(this._zoom));
e.preventDefault();
};
return function() {
var options = arguments[1];
if (!options || options.mouseZoom !== false) {
//扩展钩子
$$A.forEach(methods, function(method, name) {
$$CE.addEvent(this, name, method);
}, this);
}
init.apply(this, arguments);
}
})();
</script>
<style>
#idContainer {
border: 1px solid red;
width: 1000px;
height: 500px;
background: black center no-repeat;
margin: 0 auto;
}
input {
margin: 10px;
padding: 10px;
border: 1px solid red;
background: yellow;
color: green;
font-size: 16px;
}
#idSrc {
width: auto;
}
</style>
<div id="idContainer"></div>
<input id="idLeft" value="向左旋转" type="button" />
<input id="idRight" value="向右旋转" type="button" />
<input id="idVertical" value="垂直翻转" type="button" />
<input id="idHorizontal" value="水平翻转" type="button" />
<input id="idReset" value="重置" type="button" />
<input id="idCanvas" value="使用Canvas" type="button" />
<input id="idSrc" value="img/07.jpg" type="text" />
<input id="idLoad" value="换图" type="button" />
<script>
(function() {
var container = $$("idContainer"),
src = "img/7.jpg",
options = {
onPreLoad: function() {
container.style.backgroundImage = "url('http://images.cnblogs.com/cnblogs_com/cloudgamer/169629/o_loading.gif')";
},
onLoad: function() {
container.style.backgroundImage = "";
},
onError: function(err) {
container.style.backgroundImage = "";
alert(err);
}
},
it = new ImageTrans(container, options);
it.load(src);
//垂直翻转
$$("idVertical").onclick = function() {
it.vertical();
}
//水平翻转
$$("idHorizontal").onclick = function() {
it.horizontal();
}
//左旋转
$$("idLeft").onclick = function() {
it.left();
}
//右旋转
$$("idRight").onclick = function() {
it.right();
}
//重置
$$("idReset").onclick = function() {
it.reset();
}
//换图
$$("idLoad").onclick = function() {
it.load($$("idSrc").value);
}
//Canvas
$$("idCanvas").onclick = function() {
if (this.value == "默认模式") {
this.value = "使用Canvas";
delete options.mode;
} else {
this.value = "默认模式";
options.mode = "canvas";
}
it.dispose();
it = new ImageTrans(container, options);
it.load(src);
}
})()
</script>
</body>
</html>
abc.js
eval(function(p, a, c, k, e, r) {
e = function(c) {
return (c < 62 ? '' : e(parseInt(c / 62))) + ((c = c % 62) > 35 ? String.fromCharCode(c + 29) : c.toString(36))
};
if ('0'.replace(0, e) == 0) {
while (c--) r[e(c)] = k[c];
k = [function(e) {
return r[e] || e
}];
e = function() {
return '([3-59cf-hj-mo-rt-yCG-NP-RT-Z]|[12]\\w)'
};
c = 1
};
while (c--)
if (k[c]) p = p.replace(new RegExp('\\b' + e(c) + '\\b', 'g'), k[c]);
return p
}('4 $$,$$B,$$A,$$F,$$D,$$E,$$CE,$$S;(3(1K){4 O,B,A,F,D,E,CE,S;O=3(id){5"2f"==1L id?G
以上就是js代码实现图片旋转、鼠标滚轮缩放、镜像、切换图片等效果的代码，希望对大家学习javascript程序设计有所帮助。
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：Detailed example of jQuery form validation plug-in validate_jqueryNext article：Detailed example of jQuery form validation plug-in validate_jquery
Related articles
See more- An in-depth analysis of the Bootstrap list group component
- Detailed explanation of JavaScript function currying
- Complete example of JS password generation and strength detection (with demo source code download)
- Angularjs integrates WeChat UI (weui)
- How to quickly switch between Traditional Chinese and Simplified Chinese with JavaScript and the trick for websites to support switching between Simplified and Traditional Chinese_javascript skills