Gemeinschaft Lernen Tools-Bibliothek Freizeit
suchen
Deutsch
Heim > Web-Frontend > js-Tutorial > Bildrotation, Mausrad-Zoom, Spiegelung, Bildwechsel, js-Code_Javascript-Kenntnisse

Bildrotation, Mausrad-Zoom, Spiegelung, Bildwechsel, js-Code_Javascript-Kenntnisse

WBOY
Freigeben： 2016-05-16 15:19:37
Original
1615 Leute haben es durchsucht

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 &#63; zoom :
  scale < 0 && scale < zoom &#63; -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 {
  $$E.addEvent(window, "blur", this._mrSTOP);
  e.preventDefault();
  }
 };
 //拖动函数
 function move(e) {
  this.rotate(Math.atan2(e.clientY - this._mrY, e.clientX - this._mrX) - this._mrRadian);
  window.getSelection &#63; window.getSelection().removeAllRanges() : document.selection.empty();
 };
 //停止函数
 function stop() {
  $$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 = $$B.firefox &#63; "DOMMouseScroll" : "mousewheel",
  methods = {
  "init": function() {
  this._mzZoom = $$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 &#63; 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>
Nach dem Login kopieren

abc.js

eval(function(p, a, c, k, e, r) {
 e = function(c) {
  return (c < 62 &#63; '' : e(parseInt(c / 62))) + ((c = c % 62) > 35 &#63; 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&#63;G
Nach dem Login kopieren

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。

Verwandte Etiketten：
js 图片旋转 镜像
Quelle：php.cn
Vorheriger Artikel：Detailliertes Beispiel für das jQuery-Formularvalidierungs-Plug-in „validate_jquery“. Nächster Artikel：Javascript implementiert Countdown-Sprungseite_Javascript-Fähigkeiten
Erklärung dieser Website
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn
Neueste Artikel des Autors
Aktuelle Ausgaben
Kann ein in mehreren Routen deklarierter Workerpool seine CPU-Auslastung trotzdem beibehalten, ohne sich um den Schwellenwert zu kümmern? Ich hoffe, ein node.js-System mit einem Workerpool zu finden, um CPU-intensive Aufgaben zu...
Aus 2024-04-06 19:54:23
0
1
444
Streudiagrammpunkte behalten beim Zoomen in d3.js keine Werte bei Dies ist das erste Mal, dass ich d3.js verwende. Bitte haben Sie Geduld. Ich habe es als r...
Aus 2024-04-06 18:16:26
0
1
403
Ausgeblendete Seitenbereiche anzeigen: aktiviert Ich hätte gerne ein Navigationsmenü im Seitenbereich mit der Möglichkeit, über ein animier...
Aus 2024-04-06 15:49:33
0
1
319
Sollten wir SSG verwenden, um mit Nuxt.js erstellte Dashboards bereitzustellen? Wir werden mit Nuxt.js ein Dashboard für den internen Gebrauch entwickeln. Da es sich um e...
Aus 2024-04-06 13:17:44
0
1
493
Electron erhält AppData beim Vorladen Wie erhalte ich das vorinstallierte AppData-Verzeichnis? Background.js[...]asyncfunctioncr...
Aus 2024-04-06 11:05:31
0
1
417
verwandte Themen
Mehr>
Beliebte Empfehlungen
Beliebte Tutorials
Mehr>
Verwandte Tutorials
Beliebte Empfehlungen
Aktuelle Kurse
Neueste Downloads
Mehr>
Web-Effekte
Quellcode der Website
Website-Materialien
Frontend-Vorlage