Java图片切割

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博客分类：
JavaBase
Java UP IE prototype Cache
protected void processRequest(HttpServletRequest request,

HttpServletResponse response) throws ServletException, IOException {

String Pic = (String) request.getParameter("p");

int PointX = Integer.parseInt(request.getParameter("x"));

int PointY = Integer.parseInt(request.getParameter("y"));

int CutWidth = Integer.parseInt(request.getParameter("w"));

int CutHeight = Integer.parseInt(request.getParameter("h"));

// 图片宽度

int PicWidth = Integer.parseInt(request.getParameter("pw"));

// 图片高度

int PicHeight = Integer.parseInt(request.getParameter("ph"));

response.setContentType("image/jpeg");

response.setHeader("Pragma", "No-cache");

response.setHeader("Cache-Control", "no-cache");

response.setDateHeader("Expires", 0);

HttpSession session = request.getSession();

String picPath = Pic;

String path = request.getRealPath(picPath);

ServletOutputStream responseOutputStream = response.getOutputStream();

cut(path, responseOutputStream, CutWidth, CutHeight, PointX, PointY,

PicWidth, PicHeight);

// 以下关闭输入流！

responseOutputStream.flush();

responseOutputStream.close();

}

/**

* 图片切割

* @param srcImageFile 图片地址

* @param responseOutputStream servlet输出流

* @param w 切割宽度

* @param h 切割高度

* @param x1 开始x结点（left）

* @param y1 开始y结点（top）

* @param sw 图片宽度

* @param sh 图片高度

*/

public void cut(String srcImageFile,ServletOutputStream responseOutputStream, int w, int h, int x1,

int y1, int sw, int sh) {

try {

// http://localhost:8080/ImpCra/createServlet?p=Sunset.jpg&x=117&y=201&w=61&h=50&pw=300&ph=400

Image img;

ImageFilter cropFilter;

// 读取源图像

BufferedImage bi = ImageIO.read(new File(srcImageFile));

if (sw >= w && sh >= h) {

Image image = bi.getScaledInstance(sw, sh, Image.SCALE_DEFAULT);

// 剪切起始坐标点

int x = x1;

int y = y1;

int destWidth = w; // 切片宽度

int destHeight = h; // 切片高度

// 图片比例

double pw = sw;

double ph = sh;

double m = (double) sw / pw;

double n = (double) sh / ph;

int wth = (int) (destWidth * m);

int hth = (int) (destHeight * n);

int xx = (int) (x * m);

int yy = (int) (y * n);

// 四个参数分别为图像起点坐标和宽高

// 即: CropImageFilter(int x,int y,int width,int height)

cropFilter = new CropImageFilter(xx, yy, wth, hth);

img = Toolkit.getDefaultToolkit().createImage(

new FilteredImageSource(image.getSource(), cropFilter));

BufferedImage tag = new BufferedImage(w, h,

BufferedImage.TYPE_INT_RGB);

Graphics g = tag.getGraphics();

g.drawImage(img, 0, 0, null); // 绘制缩小后的图

g.dispose();

// 输出为文件

ImageIO.write(tag, "JPEG", responseOutputStream);

}

} catch (Exception e) {

e.printStackTrace();

}

}

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<title>JavaScript 图片切割效果（带拖放、缩放效果） </title>

</head>

<body>

<style type="text/css">

#rRightDown,#rLeftDown,#rLeftUp,#rRightUp,#rRight,#rLeft,#rUp,#rDown{position:absolute;background:#F00;width:5px; height:5px; z-index:500; font-size:0;}

#dragDiv{border:1px solid #000000;}

</style>

<table width="100%" border="0" cellspacing="0" cellpadding="0">

  <tr>

    <td width="50%">

    <div id="bgDiv" style="width:400px; height:500px;">

        <div id="dragDiv">

          <div id="rRightDown" style="right:0; bottom:0;"> </div>

          <div id="rLeftDown" style="left:0; bottom:0;"> </div>

          <div id="rRightUp" style="right:0; top:0;"> </div>

          <div id="rLeftUp" style="left:0; top:0;"> </div>

          <div id="rRight" style="right:0; top:50%;"> </div>

          <div id="rLeft" style="left:0; top:50%;"> </div>

          <div id="rUp" style="top:0; left:50%;"> </div>

          <div id="rDown" style="bottom:0;left:50%;"></div>

        </div>

    </div>

    </td>

    <td><div id="viewDiv" style="width:200px; height:200px;"> </div></td>

  </tr>

</table>

<script>

var $ = function (id) {

    return "string" == typeof id ? document.getElementById(id) : id;

};

var isIE = (document.all) ? true : false;

function addEventHandler(oTarget, sEventType, fnHandler) {

if (oTarget.addEventListener) {

oTarget.addEventListener(sEventType, fnHandler, false);

} else if (oTarget.attachEvent) {

oTarget.attachEvent("on" + sEventType, fnHandler);

} else {

oTarget["on" + sEventType] = fnHandler;

}

};

function removeEventHandler(oTarget, sEventType, fnHandler) {

    if (oTarget.removeEventListener) {

        oTarget.removeEventListener(sEventType, fnHandler, false);

    } else if (oTarget.detachEvent) {

        oTarget.detachEvent("on" + sEventType, fnHandler);

    } else {

        oTarget["on" + sEventType] = null;

    }

};

var Class = {

  create: function() {

    return function() {

      this.initialize.apply(this, arguments);

    }

  }

}

Object.extend = function(destination, source) {

    for (var property in source) {

        destination[property] = source[property];

    }

    return destination;

}

//拖放程序

var Drag = Class.create();

Drag.prototype = {

  //拖放对象,触发对象

  initialize: function(obj, drag, options) {

    var oThis = this;

this._obj = $(obj);//拖放对象

this.Drag = $(drag);//触发对象

this._x = this._y = 0;//记录鼠标相对拖放对象的位置

//事件对象(用于移除事件)

this._fM = function(e){ oThis.Move(window.event || e); }

this._fS = function(){ oThis.Stop(); }

this.SetOptions(options);

this.Limit = !!this.options.Limit;

this.mxLeft = parseInt(this.options.mxLeft);

this.mxRight = parseInt(this.options.mxRight);

this.mxTop = parseInt(this.options.mxTop);

this.mxBottom = parseInt(this.options.mxBottom);

this.onMove = this.options.onMove;

this._obj.style.position = "absolute";

addEventHandler(this.Drag, "mousedown", function(e){ oThis.Start(window.event || e); });

  },

  //设置默认属性

  SetOptions: function(options) {

    this.options = {//默认值

Limit: false,//是否设置限制(为true时下面参数有用,可以是负数)

mxLeft: 0,//左边限制

mxRight: 0,//右边限制

mxTop: 0,//上边限制

mxBottom: 0,//下边限制

onMove: function(){}//移动时执行

    };

    Object.extend(this.options, options || {});

  },

  //准备拖动

  Start: function(oEvent) {

//记录鼠标相对拖放对象的位置

this._x = oEvent.clientX - this._obj.offsetLeft;

this._y = oEvent.clientY - this._obj.offsetTop;

//mousemove时移动 mouseup时停止

addEventHandler(document, "mousemove", this._fM);

addEventHandler(document, "mouseup", this._fS);

//使鼠标移到窗口外也能释放

if(isIE){

addEventHandler(this.Drag, "losecapture", this._fS);

this.Drag.setCapture();

}else{

addEventHandler(window, "blur", this._fS);

}

  },

  //拖动

  Move: function(oEvent) {

//清除选择(ie设置捕获后默认带这个)

window.getSelection && window.getSelection().removeAllRanges();

//当前鼠标位置减去相对拖放对象的位置得到offset位置

var iLeft = oEvent.clientX - this._x, iTop = oEvent.clientY - this._y;

//设置范围限制

if(this.Limit){

//获取超出长度

var iRight = iLeft + this._obj.offsetWidth - this.mxRight, iBottom = iTop + this._obj.offsetHeight - this.mxBottom;

//这里是先设置右边下边再设置左边上边,可能会不准确

if(iRight > 0) iLeft -= iRight;

if(iBottom > 0) iTop -= iBottom;

if(this.mxLeft > iLeft) iLeft = this.mxLeft;

if(this.mxTop > iTop) iTop = this.mxTop;

}

//设置位置

this._obj.style.left = iLeft + "px";

this._obj.style.top = iTop + "px";

//附加程序

this.onMove();

  },

  //停止拖动

  Stop: function() {

//移除事件

removeEventHandler(document, "mousemove", this._fM);

removeEventHandler(document, "mouseup", this._fS);

if(isIE){

removeEventHandler(this.Drag, "losecapture", this._fS);

this.Drag.releaseCapture();

}else{

removeEventHandler(window, "blur", this._fS);

}

  }

};

//缩放程序

var Resize = Class.create();

Resize.prototype = {

  //缩放对象

  initialize: function(obj, options) {

    var oThis = this;

this._obj = $(obj);//缩放对象

this._right = this._down = this._left = this._up = 0;//坐标参数

this._scale = 1;//比例参数

this._touch = null;//当前触发对象

//用currentStyle（ff用getComputedStyle）取得最终样式

var _style = this._obj.currentStyle || document.defaultView.getComputedStyle(this._obj, null);

this._xBorder = parseInt(_style.borderLeftWidth) + parseInt(_style.borderRightWidth);

this._yBorder = parseInt(_style.borderTopWidth) + parseInt(_style.borderBottomWidth);

//事件对象(用于移除事件)

this._fR = function(e){ oThis.Resize(e); }

this._fS = function(){ oThis.Stop(); }

this.SetOptions(options);

this.Limit = !!this.options.Limit;

this.mxLeft = parseInt(this.options.mxLeft);

this.mxRight = parseInt(this.options.mxRight);

this.mxTop = parseInt(this.options.mxTop);

this.mxBottom = parseInt(this.options.mxBottom);

this.MinWidth = parseInt(this.options.MinWidth);

this.MinHeight = parseInt(this.options.MinHeight);

this.Scale = !!this.options.Scale;

this.onResize = this.options.onResize;

this._obj.style.position = "absolute";

  },

  //设置默认属性

  SetOptions: function(options) {

    this.options = {//默认值

Limit: false,//是否设置限制(为true时下面mx参数有用)

mxLeft: 0,//左边限制

mxRight: 0,//右边限制

mxTop: 0,//上边限制

mxBottom: 0,//下边限制

MinWidth: 50,//最小宽度

MinHeight: 50,//最小高度

Scale: false,//是否按比例缩放

onResize: function(){}//缩放时执行

    };

    Object.extend(this.options, options || {});

  },

  //设置触发对象

  Set: function(resize, side) {

var oThis = this, resize = $(resize), _fun, _cursor;

if(!resize) return;

//根据方向设置 _fun是缩放时执行的程序 _cursor是鼠标样式

switch (side.toLowerCase()) {

case "up" :

_fun = function(e){ if(oThis.Scale){ oThis.scaleUpRight(e); }else{ oThis.SetUp(e); } };

_cursor = "n-resize";

break;

case "down" :

_fun = function(e){ if(oThis.Scale){ oThis.scaleDownRight(e); }else{ oThis.SetDown(e); } };

_cursor = "n-resize";

break;

case "left" :

_fun = function(e){ if(oThis.Scale){ oThis.scaleLeftUp(e); }else{ oThis.SetLeft(e); } };

_cursor = "e-resize";

break;

case "right" :

_fun = function(e){ if(oThis.Scale){ oThis.scaleRightDown(e); }else{ oThis.SetRight(e); } };

_cursor = "e-resize";

break;

case "left-up" :

_fun = function(e){ if(oThis.Scale){ oThis.scaleLeftUp(e); }else{ oThis.SetLeft(e); oThis.SetUp(e); } };

_cursor = "nw-resize";

break;

case "right-up" :

_fun = function(e){ if(oThis.Scale){ oThis.scaleRightUp(e); }else{ oThis.SetRight(e); oThis.SetUp(e); } };

_cursor = "ne-resize";

break;

case "left-down" :

_fun = function(e){ if(oThis.Scale){ oThis.scaleLeftDown(e); }else{ oThis.SetLeft(e); oThis.SetDown(e); } };

_cursor = "ne-resize";

break;

case "right-down" :

default :

_fun = function(e){ if(oThis.Scale){ oThis.scaleRightDown(e); }else{ oThis.SetRight(e); oThis.SetDown(e); } };

_cursor = "nw-resize";

}

//设置触发对象

resize.style.cursor = _cursor;

addEventHandler(resize, "mousedown", function(e){ oThis._fun = _fun; oThis._touch = resize; oThis.Start(window.event || e); });

  },

  //准备缩放

  Start: function(oEvent, o) {

//防止冒泡

if(isIE){ oEvent.cancelBubble = true; } else { oEvent.stopPropagation(); }

//计算样式初始值

this.style_width = this._obj.offsetWidth;

this.style_height = this._obj.offsetHeight;

this.style_left = this._obj.offsetLeft;

this.style_top = this._obj.offsetTop;

//设置缩放比例

if(this.Scale){ this._scale = this.style_width / this.style_height; }

//计算当前边的对应另一条边的坐标 例如右边缩放时需要左边界坐标

this._left = oEvent.clientX - this.style_width;

this._right = oEvent.clientX + this.style_width;

this._up = oEvent.clientY - this.style_height;

this._down = oEvent.clientY + this.style_height;

//如果有范围 先计算好范围内最大宽度和高度

if(this.Limit){

this._mxRight = this.mxRight - this._obj.offsetLeft;

this._mxDown = this.mxBottom - this._obj.offsetTop;

this._mxLeft = this.mxLeft + this.style_width + this._obj.offsetLeft;

this._mxUp = this.mxTop + this.style_height + this._obj.offsetTop;

}

//mousemove时缩放 mouseup时停止

addEventHandler(document, "mousemove", this._fR);

addEventHandler(document, "mouseup", this._fS);

//使鼠标移到窗口外也能释放

if(isIE){

addEventHandler(this._touch, "losecapture", this._fS);

this._touch.setCapture();

}else{

addEventHandler(window, "blur", this._fS);

}

  }, 

  //缩放

  Resize: function(e) {

//没有触发对象的话返回

if(!this._touch) return;

//清除选择(ie设置捕获后默认带这个)

window.getSelection && window.getSelection().removeAllRanges();

//执行缩放程序

this._fun(window.event || e);

//设置样式

//因为计算用的offset是把边框算进去的所以要减去

this._obj.style.width = this.style_width - this._xBorder + "px";

this._obj.style.height = this.style_height - this._yBorder + "px";

this._obj.style.top = this.style_top + "px";

this._obj.style.left = this.style_left + "px";

//附加程序

this.onResize();

  },

  //普通缩放

  //右边

  SetRight: function(oEvent) {

//当前坐标位置减去左边的坐标等于当前宽度

this.repairRight(oEvent.clientX - this._left);

  },

  //下边

  SetDown: function(oEvent) {

this.repairDown(oEvent.clientY - this._up);

  },

  //左边

  SetLeft: function(oEvent) {

//右边的坐标减去当前坐标位置等于当前宽度

this.repairLeft(this._right - oEvent.clientX);

  },

  //上边

  SetUp: function(oEvent) {

this.repairUp(this._down - oEvent.clientY);

  },

  //比例缩放

  //比例缩放右下

  scaleRightDown: function(oEvent) {

//先计算宽度然后按比例计算高度最后根据确定的高度计算宽度（宽度优先）

this.SetRight(oEvent);

this.repairDown(parseInt(this.style_width / this._scale));

this.repairRight(parseInt(this.style_height * this._scale));

  },

  //比例缩放左下

  scaleLeftDown: function(oEvent) {

this.SetLeft(oEvent);

this.repairDown(parseInt(this.style_width / this._scale));

this.repairLeft(parseInt(this.style_height * this._scale));

  },

  //比例缩放右上

  scaleRightUp: function(oEvent) {

this.SetRight(oEvent);

this.repairUp(parseInt(this.style_width / this._scale));

this.repairRight(parseInt(this.style_height * this._scale));

  },

  //比例缩放左上

  scaleLeftUp: function(oEvent) {

this.SetLeft(oEvent);

this.repairUp(parseInt(this.style_width / this._scale));

this.repairLeft(parseInt(this.style_height * this._scale));

  },

  //这里是高度优先用于上下两边(体验更好)

  //比例缩放下右

  scaleDownRight: function(oEvent) {

this.SetDown(oEvent);

this.repairRight(parseInt(this.style_height * this._scale));

this.repairDown(parseInt(this.style_width / this._scale));

  },

  //比例缩放上右

  scaleUpRight: function(oEvent) {

this.SetUp(oEvent);

this.repairRight(parseInt(this.style_height * this._scale));

this.repairUp(parseInt(this.style_width / this._scale));

  },

  //修正程序

  //修正右边

  repairRight: function(iWidth) {

//右边和下边只要设置宽度和高度就行

//当少于最少宽度

if (iWidth < this.MinWidth){ iWidth = this.MinWidth; }

//当超过当前设定的最大宽度

if(this.Limit && iWidth > this._mxRight){ iWidth = this._mxRight; }

//修改样式

this.style_width = iWidth;

  },

  //修正下边

  repairDown: function(iHeight) {

if (iHeight < this.MinHeight){ iHeight = this.MinHeight; }

if(this.Limit && iHeight > this._mxDown){ iHeight = this._mxDown; }

this.style_height = iHeight;

  },

  //修正左边

  repairLeft: function(iWidth) {

//左边和上边比较麻烦 因为还要计算left和top

//当少于最少宽度

if (iWidth < this.MinWidth){ iWidth = this.MinWidth; }

//当超过当前设定的最大宽度

else if(this.Limit && iWidth > this._mxLeft){ iWidth = this._mxLeft; }

//修改样式

this.style_width = iWidth;

this.style_left = this._obj.offsetLeft + this._obj.offsetWidth - iWidth;

  },

  //修正上边

  repairUp: function(iHeight) {

if(iHeight < this.MinHeight){ iHeight = this.MinHeight; }

else if(this.Limit && iHeight > this._mxUp){ iHeight = this._mxUp; }

this.style_height = iHeight;

this.style_top = this._obj.offsetTop + this._obj.offsetHeight - iHeight;

  },

  //停止缩放

  Stop: function() {

//移除事件

removeEventHandler(document, "mousemove", this._fR);

removeEventHandler(document, "mouseup", this._fS);

if(isIE){

removeEventHandler(this._touch, "losecapture", this._fS);

this._touch.releaseCapture();

}else{

removeEventHandler(window, "blur", this._fS);

}

this._touch = null;

  }

};

//图片切割

var ImgCropper = Class.create();

ImgCropper.prototype = {

  //容器对象,拖放缩放对象,图片地址,宽度,高度

  initialize: function(container, drag, url, width, height, options) {

var oThis = this;

//容器对象

this.Container = $(container);

this.Container.style.position = "relative";

this.Container.style.overflow = "hidden";

//拖放对象

this.Drag = $(drag);

this.Drag.style.cursor = "move";

this.Drag.style.zIndex = 200;

if(isIE){

//设置overflow解决ie6的渲染问题(缩放时填充对象高度的问题)

this.Drag.style.overflow = "hidden";

//ie下用一个透明的层填充拖放对象 不填充的话onmousedown会失效(未知原因)

(function(style){

style.width = style.height = "100%"; style.backgroundColor = "#fff"; style.filter = "alpha(opacity:0)";

})(this.Drag.appendChild(document.createElement("div")).style)

}

this._pic = this.Container.appendChild(document.createElement("img"));//图片对象

this._cropper = this.Container.appendChild(document.createElement("img"));//切割对象

this._pic.style.position = this._cropper.style.position = "absolute";

this._pic.style.top = this._pic.style.left = this._cropper.style.top = this._cropper.style.left = "0";//对齐

this._cropper.style.zIndex = 100;

this._cropper.onload = function(){ oThis.SetPos(); }

this.Url = url;//图片地址

this.Width = parseInt(width);//宽度

this.Height = parseInt(height);//高度

this.SetOptions(options);

this.Opacity = parseInt(this.options.Opacity);

this.dragTop = parseInt(this.options.dragTop);

this.dragLeft = parseInt(this.options.dragLeft);

this.dragWidth = parseInt(this.options.dragWidth);

this.dragHeight = parseInt(this.options.dragHeight);

//设置预览对象

this.View = $(this.options.View) || null;//预览对象

this.viewWidth = parseInt(this.options.viewWidth);

this.viewHeight = parseInt(this.options.viewHeight);

this._view = null;//预览图片对象

if(this.View){

this.View.style.position = "relative";

this.View.style.overflow = "hidden";

this._view = this.View.appendChild(document.createElement("img"));

this._view.style.position = "absolute";

}

this.Scale = parseInt(this.options.Scale);

//设置拖放

this._drag = new Drag(this.Drag, this.Drag, { Limit: true, onMove: function(){ oThis.SetPos(); } });

//设置缩放

this._resize = this.GetResize();

this.Init();

  },

  //设置默认属性

  SetOptions: function(options) {

    this.options = {//默认值

Opacity: 50,//透明度(0到100)

//拖放位置和宽高

dragTop: 0,

dragLeft: 0,

dragWidth: 100,

dragHeight: 100,

//缩放触发对象

Right: "",

Left: "",

Up: "",

Down: "",

RightDown: "",

LeftDown: "",

RightUp: "",

LeftUp: "",

Scale: false,//是否按比例缩放

//预览对象设置

View: "",//预览对象

viewWidth: 100,//预览宽度

viewHeight: 100//预览高度

    };

    Object.extend(this.options, options || {});

  },

  //初始化对象

  Init: function() {

var oThis = this;

//设置容器

this.Container.style.width = this.Width + "px";

this.Container.style.height = this.Height + "px";

//设置拖放对象

this.Drag.style.top = this.dragTop + "px";

this.Drag.style.left = this.dragLeft + "px";

this.Drag.style.width = this.dragWidth + "px";

this.Drag.style.height = this.dragHeight + "px";

//设置切割对象

this._pic.src = this._cropper.src = this.Url;

this._pic.style.width = this._cropper.style.width = this.Width + "px";

this._pic.style.height = this._cropper.style.height = this.Height + "px";

if(isIE){

this._pic.style.filter = "alpha(opacity:" + this.Opacity + ")";

} else {

this._pic.style.opacity = this.Opacity / 100;

}

//设置预览对象

if(this.View){ this._view.src = this.Url; }

//设置拖放

this._drag.mxRight = this.Width; this._drag.mxBottom = this.Height;

//设置缩放

if(this._resize){ this._resize.mxRight = this.Width; this._resize.mxBottom = this.Height; this._resize.Scale = this.Scale; }

  },

  //设置获取缩放对象

  GetResize: function() {

var op = this.options;

//有触发对象时才设置

if(op.RightDown || op.LeftDown || op.RightUp || op.LeftUp || op.Right || op.Left || op.Up || op.Down ){

var oThis = this, _resize = new Resize(this.Drag, { Limit: true, onResize: function(){ oThis.SetPos(); } });

//设置缩放触发对象

if(op.RightDown){ _resize.Set(op.RightDown, "right-down"); }

if(op.LeftDown){ _resize.Set(op.LeftDown, "left-down"); }

if(op.RightUp){ _resize.Set(op.RightUp, "right-up"); }

if(op.LeftUp){ _resize.Set(op.LeftUp, "left-up"); }

if(op.Right){ _resize.Set(op.Right, "right"); }

if(op.Left){ _resize.Set(op.Left, "left"); }

if(op.Up){ _resize.Set(op.Up, "up"); }

if(op.Down){ _resize.Set(op.Down, "down"); }

return _resize;

} else { return null; }

  }, 

  //设置切割

  SetPos: function() {

var o = this.Drag;

//按拖放对象的参数进行切割

this._cropper.style.clip = "rect(" + o.offsetTop + "px " + (o.offsetLeft + o.offsetWidth) + "px " + (o.offsetTop + o.offsetHeight) + "px " + o.offsetLeft + "px)";

//切割预览

if(this.View) this.PreView();

  }, 

  //切割预览

  PreView: function() {

//按比例设置宽度和高度

var o = this.Drag, h = this.viewWidth, w = h * o.offsetWidth / o.offsetHeight;

if(w > this.viewHeight){ w = this.viewHeight; h = w * o.offsetHeight / o.offsetWidth; }

//获取对应比例尺寸

var scale = h / o.offsetHeight, ph = this.Height * scale, pw = this.Width * scale, pt = o.offsetTop * scale, pl = o.offsetLeft * scale, styleView = this._view.style;

//设置样式

styleView.width = pw + "px"; styleView.height = ph + "px";

styleView.top = - pt + "px "; styleView.left = - pl + "px";

//切割预览图

styleView.clip = "rect(" + pt + "px " + (pl + w) + "px " + (pt + h) + "px " + pl + "px)";

  }

}

var ic = new ImgCropper("bgDiv", "dragDiv", "../image/Sunset.jpg", 300, 400, {

dragTop: 50, dragLeft: 50,

Right: "rRight", Left: "rLeft", Up: "rUp", Down: "rDown",

RightDown: "rRightDown", LeftDown: "rLeftDown", RightUp: "rRightUp", LeftUp: "rLeftUp",

View: "viewDiv", viewWidth: 200, viewHeight: 200

})

</script>

<script>

//设置图片大小

function Size(w, h){

ic.Width = w;

ic.Height = h;

ic.Init();

}

//换图片

function Pic(url){

ic.Url = url;

ic.Init();

}

//设置透明度

function Opacity(i){

ic.Opacity = i;

ic.Init();

}

//是否使用比例

function Scale(b){

ic.Scale = b;

ic.Init();

}

</script>

<br />

<br />

<div>

  <input name="" type="button" value=" 增肥 " onclick="Size(500,400)" />

  <input name="" type="button" value=" 还原 " onclick="Size(300,400)" />

</div>

<br />

<div>

  <input name="" type="button" value=" 换图 " onclick="Pic('2.jpg')" />

  <input name="" type="button" value=" 还原 " onclick="Pic('1.jpg')" />

</div>

<br />

<div>

  <input name="" type="button" value=" 透明 " onclick="Opacity(0)" />

  <input name="" type="button" value=" 还原 " onclick="Opacity(50)" />

</div>

<br />

<div>

  <input name="" type="button" value="使用比例" onclick="Scale(true)" />

  <input name="" type="button" value="取消比例" onclick="Scale(false)" />

</div>

<br />

<div>

  <input name="" type="button" value="生成图片" onclick="Create()" />

  <br />

  <img id="imgCreat" />

</div>

<script>

function Create(){

var p = ic.Url,

x = ic.Drag.offsetLeft,

y = ic.Drag.offsetTop,

w = ic.Drag.offsetWidth,

h = ic.Drag.offsetHeight,

pw = ic.Width,

ph = ic.Height;

$("imgCreat").src = "/createServlet?p=" + p + "&x=" + x + "&y=" + y + "&w=" + w + "&h=" + h + "&pw=" + pw + "&ph=" + ph;

}

</script>

</body>

</html>
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pageContext对象 | JDBC中的DriverManager（二）
2009-11-30 16:03
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