◆页面（draw3.aspx）
<%@ Page language="c#" Codebehind="draw3.aspx.cs" AutoEventWireup="false" Inherits="CTest.draw3" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>draw</title>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
<script language="javascript" src="jsgraphics.js" type="text/javascript"></script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:datalist id="DataList1" style="Z-INDEX: 101; LEFT: 16px; POSITION: absolute; TOP: 392px"
runat="server" Width="80%">
<ItemTemplate>
<asp:TextBox id="TextSelItem" runat="server" Width="70%"></asp:TextBox><DIV id="SelItemCoordinate" runat="server"><FONT>坐标:（</FONT>
<asp:TextBox id="TextSelItemX" runat="server" Width="30px">0</asp:TextBox><FONT>，</FONT>
<asp:TextBox id="TextSelItemY" runat="server" Width="30px">0</asp:TextBox><FONT>）</FONT></DIV>
</ItemTemplate>
</asp:datalist>
<DIV id="parentdiv" style="Z-INDEX: 102; LEFT: 16px; WIDTH: 640px; POSITION: absolute; TOP: 40px; HEIGHT: 300px; BACKGROUND-COLOR: aliceblue"
runat="server" ms_positioning="GridLayout" noWrap></DIV>
<asp:textbox id="TextOper" style="Z-INDEX: 103; LEFT: 16px; POSITION: absolute; TOP: 8px" runat="server"
Width="24px">1</asp:textbox> <asp:radiobuttonlist id="RadioButtonList1" style="Z-INDEX: 104; LEFT: 16px; POSITION: absolute; TOP: 352px"
runat="server" Width="448px" RepeatDirection="Horizontal" AutoPostBack="True">
<asp:ListItem Value="0" Selected="True">定义节点</asp:ListItem>
<asp:ListItem Value="1">节点位置排放</asp:ListItem>
<asp:ListItem Value="2">节点间连线</asp:ListItem>
</asp:radiobuttonlist><asp:button id="Button2" style="Z-INDEX: 105; LEFT: 544px; POSITION: absolute; TOP: 8px" runat="server"
Text="JustRefresh"></asp:button>
<asp:TextBox id="TextAnswer" style="Z-INDEX: 106; LEFT: 48px; POSITION: absolute; TOP: 8px" runat="server"
Width="480px"></asp:TextBox><INPUT id="hidTag" style="Z-INDEX: 107; LEFT: 480px; POSITION: absolute; TOP: 352px" type="hidden"
name="Hidden1" runat="server">
<asp:TextBox id="TextBox1" style="Z-INDEX: 108; LEFT: 700px; POSITION: absolute; TOP: 104px"
runat="server"></asp:TextBox></form>
<script>
//被拖动的对象
var Obj=''
var startObj="";
//被拖动对象的最初坐标位置
var pLeft,pTop;
//起点坐标,终点坐标
var startLeft,startTop,endLeft,EndTop;
var jg = new jsGraphics("parentdiv");
var clientWidth = document.all("parentdiv").clientWidth;
var clientHeight = document.all("parentdiv").clientHeight;
var clientLeft = document.all("parentdiv").style.pixelLeft;
var clientTop = document.all("parentdiv").style.pixelTop;
//document.all("TextBox1").value = clientWidth + "," + clientHeight + "," + clientLeft + "," + clientTop;
//按下鼠标时
function MDown(Object)
{
Obj=Object.id
//捕获对象
document.all(Obj).setCapture();
//获得对象的最初坐标位置
pLeft = document.all(Obj).style.pixelLeft;
pTop = document.all(Obj).style.pixelTop;
if (document.all("TextOper").value == 2)
{
startLeft = document.all(Obj).style.pixelLeft + 10;
startTop = document.all(Obj).style.pixelTop + 10;
document.all("TextOper").value = 3;
startObj = Obj;
}
else if (document.all("TextOper").value == 3)
{
if(Obj != startObj)
{
endLeft = document.all(Obj).style.pixelLeft + 10;
endTop = document.all(Obj).style.pixelTop + 10;
document.all("TextOper").value = 2;
jg.setColor("blue");
jg.drawLine(startLeft,startTop,endLeft,endTop);
jg.paint("parentdiv");
document.all("TextAnswer").value = document.all("TextAnswer").value + startObj + "--" + Obj + " | ";
startObj = "";
}
else
{
document.all("TextOper").value = 3;
}
}
pX=event.x-document.all(Obj).style.pixelLeft;
pY=event.y-document.all(Obj).style.pixelTop;
}
function MMove()
{
if (event.button == 1 && document.all("hidTag").value != "2")
{
//对象的移动位置
if(Obj!='')
{
if ((event.x)< (clientWidth + clientLeft - 20) && (event.x) > (clientLeft + 20))
{
document.all(Obj).style.left=event.x-pX;
}
if ((event.y) < (clientHeight + clientTop - 10) && (event.y) > (clientTop + 20))
{
document.all(Obj).style.top=event.y-pY;
}
}
}
}
function MUp()
{
if(Obj!='')
{
var index = Obj.replace("MoveDiv","");
var txtXid = "DataList1__ctl" + index + "_TextSelItemX";
var txtYid = "DataList1__ctl" + index + "_TextSelItemY";
document.all[txtXid].value = document.all(Obj).style.pixelLeft;
document.all[txtYid].value = document.all(Obj).style.pixelTop;
//释放对象
document.all(Obj).releaseCapture();
if (document.all("TextOper").value != 1)
{
//还原到最初按下鼠标时的位置
document.all(Obj).style.pixelLeft = pLeft;
document.all(Obj).style.pixelTop = pTop;
}
Obj='';
}
}
document.onmouseup=MUp;
document.onmousemove=MMove;
function CancelContextMenu()
{
event.cancelBubble = true;
event.returnValue = false;
}
document.oncontextmenu = CancelContextMenu;
</script>
</body>
</HTML>
********************************************************************************
◆代码文件（draw3.aspx.cs）
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace CTest
{
/// <summary>
/// draw 的摘要说明。
/// </summary>
public class draw3 : System.Web.UI.Page
{
protected System.Web.UI.HtmlControls.HtmlGenericControl parentdiv;
protected System.Web.UI.WebControls.RadioButtonList RadioButtonList1;
protected System.Web.UI.WebControls.Button Button2;
protected System.Web.UI.WebControls.TextBox TextOper;
protected System.Web.UI.WebControls.TextBox TextAnswer;
protected System.Web.UI.HtmlControls.HtmlInputHidden hidTag;
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.DataList DataList1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if (!IsPostBack)
{
this.AddDiv(6);
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.DataList1.ItemDataBound += new System.Web.UI.WebControls.DataListItemEventHandler(this.DataList1_ItemDataBound);
this.RadioButtonList1.SelectedIndexChanged += new System.EventHandler(this.RadioButtonList1_SelectedIndexChanged);
this.Button2.Click += new System.EventHandler(this.Button2_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void AddDiv(int n)
{
string [] strAry = new string[n];
DataList1.DataSource = strAry;
DataList1.DataBind();
}
private void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
{
TextBox txt = new TextBox();
HtmlGenericControl div = new HtmlGenericControl();
txt=(TextBox)e.Item.Controls[2].Controls[1];
txt.Text = "10";
txt=(TextBox)e.Item.Controls[2].Controls[3];
txt.Text = (10 + 30*e.Item.ItemIndex).ToString();
div = (HtmlGenericControl)e.Item.Controls[2];
div.Style.Add("display","none");
}
private void RadioButtonList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
switch(RadioButtonList1.SelectedIndex)
{
case 0:
this.DataList1.Style.Add("display","inline");
this.TextOper.Text = "1";
break;
case 1:
this.DataList1.Style.Add("display","inline");
this.TextOper.Text = "1";
this.hidTag.Value = "1";
break;
case 2:
this.DataList1.Style.Add("display","none");
this.TextOper.Text = "2";
this.hidTag.Value = "2";
break;
}
showSelItems();
}
private void showSelItems()
{
string html = "";
string txtValue ="";
string txtX = "";
string txtY = "";
TextBox txt = new TextBox();
HtmlGenericControl div = new HtmlGenericControl();
for(int i=0;i<DataList1.Items.Count;i++)
{
txt=(TextBox)DataList1.Items[i].Controls[2].Controls[1];
txtX = txt.Text.Trim();
txt=(TextBox)DataList1.Items[i].Controls[2].Controls[3];
txtY = txt.Text.Trim();
txt=(TextBox)DataList1.Items[i].Controls[1];
txtValue = txt.Text.TrimStart().TrimEnd();
if(txtValue.Length>0)
html += "<DIV onmousedown='MDown(this)' id='MoveDiv"+ i.ToString() +"' style='Z-INDEX: 105; LEFT: " + txtX + "px; CURSOR: hand; POSITION: absolute; TOP: "+ txtY +"px; BORDER-RIGHT: darkgreen 3px double; BORDER-TOP: darkgreen 3px double; BORDER-LEFT: darkgreen 3px double; BORDER-BOTTOM: darkgreen 3px double; BACKGROUND-COLOR: FloralWhite' ms_positioning='FlowLayout' > "+txtValue+" </DIV>";
else if(this.RadioButtonList1.SelectedIndex>0)
txt.Visible = false;
else
txt.Visible = true;
div = (HtmlGenericControl)DataList1.Items[i].Controls[2];
if(this.RadioButtonList1.SelectedIndex>0 && txtValue.Length>0)
div.Style.Add("display","inline");
else
div.Style.Add("display","none");
}
this.parentdiv.InnerHtml =html;
}
}
}
********************************************************************************
◆脚本文件（jsGraphics.js）
var jg_ihtm, jg_ie, jg_fast, jg_dom, jg_moz,
jg_n4 = (document.layers && typeof document.classes != "undefined");
function chkDHTM(x, i)
{
x = document.body || null;
jg_ie = x && typeof x.insertAdjacentHTML != "undefined";
jg_dom = (x && !jg_ie &&
typeof x.appendChild != "undefined" &&
typeof document.createRange != "undefined" &&
typeof (i = document.createRange()).setStartBefore != "undefined" &&
typeof i.createContextualFragment != "undefined");
jg_ihtm = !jg_ie && !jg_dom && x && typeof x.innerHTML != "undefined";
jg_fast = jg_ie && document.all && !window.opera;
jg_moz = jg_dom && typeof x.style.MozOpacity != "undefined";
}
function pntDoc()
{
this.wnd.document.write(jg_fast? this.htmRpc() : this.htm);
this.htm = '';
}
function pntCnvDom()
{
var x = document.createRange();
x.setStartBefore(this.cnv);
x = x.createContextualFragment(jg_fast? this.htmRpc() : this.htm);
this.cnv.appendChild(x);
this.htm = '';
}
function pntCnvIe()
{
this.cnv.insertAdjacentHTML("BeforeEnd", jg_fast? this.htmRpc() : this.htm);
this.htm = '';
}
function pntCnvIhtm()
{
this.cnv.innerHTML += this.htm;
this.htm = '';
}
function pntCnv()
{
this.htm = '';
}
function mkDiv(x, y, w, h)
{
this.htm += '<div style="position:absolute;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:' + w + 'px;'+
'height:' + h + 'px;'+
'clip:rect(0,'+w+'px,'+h+'px,0);'+
'background-color:' + this.color +
(!jg_moz? ';overflow:hidden' : '')+
';"><\/div>';
}
function mkDivIe(x, y, w, h)
{
this.htm += '%%'+this.color+';'+x+';'+y+';'+w+';'+h+';';
}
function mkDivPrt(x, y, w, h)
{
this.htm += '<div style="position:absolute;'+
'border-left:' + w + 'px solid ' + this.color + ';'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:0px;'+
'height:' + h + 'px;'+
'clip:rect(0,'+w+'px,'+h+'px,0);'+
'background-color:' + this.color +
(!jg_moz? ';overflow:hidden' : '')+
';"><\/div>';
}
function mkLyr(x, y, w, h)
{
this.htm += '<layer '+
'left="' + x + '" '+
'top="' + y + '" '+
'width="' + w + '" '+
'height="' + h + '" '+
'bgcolor="' + this.color + '"><\/layer>\n';
}
var regex = /%%([^;]+);([^;]+);([^;]+);([^;]+);([^;]+);/g;
function htmRpc()
{
return this.htm.replace(
regex,
'<div style="overflow:hidden;position:absolute;background-color:'+
'$1;left:$2;top:$3;width:$4;height:$5"></div>\n');
}
function htmPrtRpc()
{
return this.htm.replace(
regex,
'<div style="overflow:hidden;position:absolute;background-color:'+
'$1;left:$2;top:$3;width:$4;height:$5;border-left:$4px solid $1"></div>\n');
}
function mkLin(x1, y1, x2, y2)
{
if (x1 > x2)
{
var _x2 = x2;
var _y2 = y2;
x2 = x1;
y2 = y1;
x1 = _x2;
y1 = _y2;
}
var dx = x2-x1, dy = Math.abs(y2-y1),
x = x1, y = y1,
yIncr = (y1 > y2)? -1 : 1;
if (dx >= dy)
{
var pr = dy<<1,
pru = pr - (dx<<1),
p = pr-dx,
ox = x;
while ((dx--) > 0)
{
++x;
if (p > 0)
{
this.mkDiv(ox, y, x-ox, 1);
y += yIncr;
p += pru;
ox = x;
}
else p += pr;
}
this.mkDiv(ox, y, x2-ox+1, 1);
}
else
{
var pr = dx<<1,
pru = pr - (dy<<1),
p = pr-dy,
oy = y;
if (y2 <= y1)
{
while ((dy--) > 0)
{
if (p > 0)
{
this.mkDiv(x++, y, 1, oy-y+1);
y += yIncr;
p += pru;
oy = y;
}
else
{
y += yIncr;
p += pr;
}
}
this.mkDiv(x2, y2, 1, oy-y2+1);
}
else
{
while ((dy--) > 0)
{
y += yIncr;
if (p > 0)
{
this.mkDiv(x++, oy, 1, y-oy);
p += pru;
oy = y;
}
else p += pr;
}
this.mkDiv(x2, oy, 1, y2-oy+1);
}
}
}
function mkLin2D(x1, y1, x2, y2)
{
if (x1 > x2)
{
var _x2 = x2;
var _y2 = y2;
x2 = x1;
y2 = y1;
x1 = _x2;
y1 = _y2;
}
var dx = x2-x1, dy = Math.abs(y2-y1),
x = x1, y = y1,
yIncr = (y1 > y2)? -1 : 1;
var s = this.stroke;
if (dx >= dy)
{
if (s-3 > 0)
{
var _s = (s*dx*Math.sqrt(1+dy*dy/(dx*dx))-dx-(s>>1)*dy) / dx;
_s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1;
}
else var _s = s;
var ad = Math.ceil(s/2);
var pr = dy<<1,
pru = pr - (dx<<1),
p = pr-dx,
ox = x;
while ((dx--) > 0)
{
++x;
if (p > 0)
{
this.mkDiv(ox, y, x-ox+ad, _s);
y += yIncr;
p += pru;
ox = x;
}
else p += pr;
}
this.mkDiv(ox, y, x2-ox+ad+1, _s);
}
else
{
if (s-3 > 0)
{
var _s = (s*dy*Math.sqrt(1+dx*dx/(dy*dy))-(s>>1)*dx-dy) / dy;
_s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1;
}
else var _s = s;
var ad = Math.round(s/2);
var pr = dx<<1,
pru = pr - (dy<<1),
p = pr-dy,
oy = y;
if (y2 <= y1)
{
++ad;
while ((dy--) > 0)
{
if (p > 0)
{
this.mkDiv(x++, y, _s, oy-y+ad);
y += yIncr;
p += pru;
oy = y;
}
else
{
y += yIncr;
p += pr;
}
}
this.mkDiv(x2, y2, _s, oy-y2+ad);
}
else
{
while ((dy--) > 0)
{
y += yIncr;
if (p > 0)
{
this.mkDiv(x++, oy, _s, y-oy+ad);
p += pru;
oy = y;
}
else p += pr;
}
this.mkDiv(x2, oy, _s, y2-oy+ad+1);
}
}
}
function mkLinDott(x1, y1, x2, y2)
{
if (x1 > x2)
{
var _x2 = x2;
var _y2 = y2;
x2 = x1;
y2 = y1;
x1 = _x2;
y1 = _y2;
}
var dx = x2-x1, dy = Math.abs(y2-y1),
x = x1, y = y1,
yIncr = (y1 > y2)? -1 : 1,
drw = true;
if (dx >= dy)
{
var pr = dy<<1,
pru = pr - (dx<<1),
p = pr-dx;
while ((dx--) > 0)
{
if (drw) this.mkDiv(x, y, 1, 1);
drw = !drw;
if (p > 0)
{
y += yIncr;
p += pru;
}
else p += pr;
++x;
}
if (drw) this.mkDiv(x, y, 1, 1);
}
else
{
var pr = dx<<1,
pru = pr - (dy<<1),
p = pr-dy;
while ((dy--) > 0)
{
if (drw) this.mkDiv(x, y, 1, 1);
drw = !drw;
y += yIncr;
if (p > 0)
{
++x;
p += pru;
}
else p += pr;
}
if (drw) this.mkDiv(x, y, 1, 1);
}
}
function mkOv(left, top, width, height)
{
var a = width>>1, b = height>>1,
wod = width&1, hod = (height&1)+1,
cx = left+a, cy = top+b,
x = 0, y = b,
ox = 0, oy = b,
aa = (a*a)<<1, bb = (b*b)<<1,
st = (aa>>1)*(1-(b<<1)) + bb,
tt = (bb>>1) - aa*((b<<1)-1),
w, h;
while (y > 0)
{
if (st < 0)
{
st += bb*((x<<1)+3);
tt += (bb<<1)*(++x);
}
else if (tt < 0)
{
st += bb*((x<<1)+3) - (aa<<1)*(y-1);
tt += (bb<<1)*(++x) - aa*(((y--)<<1)-3);
w = x-ox;
h = oy-y;
if (w&2 && h&2)
{
this.mkOvQds(cx, cy, -x+2, ox+wod, -oy, oy-1+hod, 1, 1);
this.mkOvQds(cx, cy, -x+1, x-1+wod, -y-1, y+hod, 1, 1);
}
else this.mkOvQds(cx, cy, -x+1, ox+wod, -oy, oy-h+hod, w, h);
ox = x;
oy = y;
}
else
{
tt -= aa*((y<<1)-3);
st -= (aa<<1)*(--y);
}
}
this.mkDiv(cx-a, cy-oy, a-ox+1, (oy<<1)+hod);
this.mkDiv(cx+ox+wod, cy-oy, a-ox+1, (oy<<1)+hod);
}
function mkOv2D(left, top, width, height)
{
var s = this.stroke;
width += s-1;
height += s-1;
var a = width>>1, b = height>>1,
wod = width&1, hod = (height&1)+1,
cx = left+a, cy = top+b,
x = 0, y = b,
aa = (a*a)<<1, bb = (b*b)<<1,
st = (aa>>1)*(1-(b<<1)) + bb,
tt = (bb>>1) - aa*((b<<1)-1);
if (s-4 < 0 && (!(s-2) || width-51 > 0 && height-51 > 0))
{
var ox = 0, oy = b,
w, h,
pxl, pxr, pxt, pxb, pxw;
while (y > 0)
{
if (st < 0)
{
st += bb*((x<<1)+3);
tt += (bb<<1)*(++x);
}
else if (tt < 0)
{
st += bb*((x<<1)+3) - (aa<<1)*(y-1);
tt += (bb<<1)*(++x) - aa*(((y--)<<1)-3);
w = x-ox;
h = oy-y;
if (w-1)
{
pxw = w+1+(s&1);
h = s;
}
else if (h-1)
{
pxw = s;
h += 1+(s&1);
}
else pxw = h = s;
this.mkOvQds(cx, cy, -x+1, ox-pxw+w+wod, -oy, -h+oy+hod, pxw, h);
ox = x;
oy = y;
}
else
{
tt -= aa*((y<<1)-3);
st -= (aa<<1)*(--y);
}
}
this.mkDiv(cx-a, cy-oy, s, (oy<<1)+hod);
this.mkDiv(cx+a+wod-s+1, cy-oy, s, (oy<<1)+hod);
}
else
{
var _a = (width-((s-1)<<1))>>1,
_b = (height-((s-1)<<1))>>1,
_x = 0, _y = _b,
_aa = (_a*_a)<<1, _bb = (_b*_b)<<1,
_st = (_aa>>1)*(1-(_b<<1)) + _bb,
_tt = (_bb>>1) - _aa*((_b<<1)-1),
pxl = new Array(),
pxt = new Array(),
_pxb = new Array();
pxl[0] = 0;
pxt[0] = b;
_pxb[0] = _b-1;
while (y > 0)
{
if (st < 0)
{
st += bb*((x<<1)+3);
tt += (bb<<1)*(++x);
pxl[pxl.length] = x;
pxt[pxt.length] = y;
}
else if (tt < 0)
{
st += bb*((x<<1)+3) - (aa<<1)*(y-1);
tt += (bb<<1)*(++x) - aa*(((y--)<<1)-3);
pxl[pxl.length] = x;
pxt[pxt.length] = y;
}
else
{
tt -= aa*((y<<1)-3);
st -= (aa<<1)*(--y);
}
if (_y > 0)
{
if (_st < 0)
{
_st += _bb*((_x<<1)+3);
_tt += (_bb<<1)*(++_x);
_pxb[_pxb.length] = _y-1;
}
else if (_tt < 0)
{
_st += _bb*((_x<<1)+3) - (_aa<<1)*(_y-1);
_tt += (_bb<<1)*(++_x) - _aa*(((_y--)<<1)-3);
_pxb[_pxb.length] = _y-1;
}
else
{
_tt -= _aa*((_y<<1)-3);
_st -= (_aa<<1)*(--_y);
_pxb[_pxb.length-1]--;
}
}
}
var ox = 0, oy = b,
_oy = _pxb[0],
l = pxl.length,
w, h;
for (var i = 0; i < l; i++)
{
if (typeof _pxb[i] != "undefined")
{
if (_pxb[i] < _oy || pxt[i] < oy)
{
x = pxl[i];
this.mkOvQds(cx, cy, -x+1, ox+wod, -oy, _oy+hod, x-ox, oy-_oy);
ox = x;
oy = pxt[i];
_oy = _pxb[i];
}
}
else
{
x = pxl[i];
this.mkDiv(cx-x+1, cy-oy, 1, (oy<<1)+hod);
this.mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod);
ox = x;
oy = pxt[i];
}
}
this.mkDiv(cx-a, cy-oy, 1, (oy<<1)+hod);
this.mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod);
}
}
function mkOvDott(left, top, width, height)
{
var a = width>>1, b = height>>1,
wod = width&1, hod = height&1,
cx = left+a, cy = top+b,
x = 0, y = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb = (b*b)<<1,
st = (aa2>>1)*(1-(b<<1)) + bb,
tt = (bb>>1) - aa2*((b<<1)-1),
drw = true;
while (y > 0)
{
if (st < 0)
{
st += bb*((x<<1)+3);
tt += (bb<<1)*(++x);
}
else if (tt < 0)
{
st += bb*((x<<1)+3) - aa4*(y-1);
tt += (bb<<1)*(++x) - aa2*(((y--)<<1)-3);
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
if (drw) this.mkOvQds(cx, cy, -x, x+wod, -y, y+hod, 1, 1);
drw = !drw;
}
}
function mkRect(x, y, w, h)
{
var s = this.stroke;
this.mkDiv(x, y, w, s);
this.mkDiv(x+w, y, s, h);
this.mkDiv(x, y+h, w+s, s);
this.mkDiv(x, y+s, s, h-s);
}
function mkRectDott(x, y, w, h)
{
this.drawLine(x, y, x+w, y);
this.drawLine(x+w, y, x+w, y+h);
this.drawLine(x, y+h, x+w, y+h);
this.drawLine(x, y, x, y+h);
}
function jsgFont()
{
this.PLAIN = 'font-weight:normal;';
this.BOLD = 'font-weight:bold;';
this.ITALIC = 'font-style:italic;';
this.ITALIC_BOLD = this.ITALIC + this.BOLD;
this.BOLD_ITALIC = this.ITALIC_BOLD;
}
var Font = new jsgFont();
function jsgStroke()
{
this.DOTTED = -1;
}
var Stroke = new jsgStroke();
function jsGraphics(id, wnd)
{
this.setColor = new Function('arg', 'this.color = arg.toLowerCase();');
this.setStroke = function(x)
{
this.stroke = x;
if (!(x+1))
{
this.drawLine = mkLinDott;
this.mkOv = mkOvDott;
this.drawRect = mkRectDott;
}
else if (x-1 > 0)
{
this.drawLine = mkLin2D;
this.mkOv = mkOv2D;
this.drawRect = mkRect;
}
else
{
this.drawLine = mkLin;
this.mkOv = mkOv;
this.drawRect = mkRect;
}
};
this.setPrintable = function(arg)
{
this.printable = arg;
if (jg_fast)
{
this.mkDiv = mkDivIe;
this.htmRpc = arg? htmPrtRpc : htmRpc;
}
else this.mkDiv = jg_n4? mkLyr : arg? mkDivPrt : mkDiv;
};
this.setFont = function(fam, sz, sty)
{
this.ftFam = fam;
this.ftSz = sz;
this.ftSty = sty || Font.PLAIN;
};
this.drawPolyline = this.drawPolyLine = function(x, y, s)
{
for (var i=0 ; i<x.length-1 ; i++ )
this.drawLine(x[i], y[i], x[i+1], y[i+1]);
};
this.fillRect = function(x, y, w, h)
{
this.mkDiv(x, y, w, h);
};
this.drawPolygon = function(x, y)
{
this.drawPolyline(x, y);
this.drawLine(x[x.length-1], y[x.length-1], x[0], y[0]);
};
this.drawEllipse = this.drawOval = function(x, y, w, h)
{
this.mkOv(x, y, w, h);
};
this.fillEllipse = this.fillOval = function(left, top, w, h)
{
var a = (w -= 1)>>1, b = (h -= 1)>>1,
wod = (w&1)+1, hod = (h&1)+1,
cx = left+a, cy = top+b,
x = 0, y = b,
ox = 0, oy = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb = (b*b)<<1,
st = (aa2>>1)*(1-(b<<1)) + bb,
tt = (bb>>1) - aa2*((b<<1)-1),
pxl, dw, dh;
if (w+1) while (y > 0)
{
if (st < 0)
{
st += bb*((x<<1)+3);
tt += (bb<<1)*(++x);
}
else if (tt < 0)
{
st += bb*((x<<1)+3) - aa4*(y-1);
pxl = cx-x;
dw = (x<<1)+wod;
tt += (bb<<1)*(++x) - aa2*(((y--)<<1)-3);
dh = oy-y;
this.mkDiv(pxl, cy-oy, dw, dh);
this.mkDiv(pxl, cy+oy-dh+hod, dw, dh);
ox = x;
oy = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
}
this.mkDiv(cx-a, cy-oy, w+1, (oy<<1)+hod);
};
this.fillPolygon = function(array_x, array_y)
{
var i;
var y;
var miny, maxy;
var x1, y1;
var x2, y2;
var ind1, ind2;
var ints;
var n = array_x.length;
if (!n) return;
miny = array_y[0];
maxy = array_y[0];
for (i = 1; i < n; i++)
{
if (array_y[i] < miny)
miny = array_y[i];
if (array_y[i] > maxy)
maxy = array_y[i];
}
for (y = miny; y <= maxy; y++)
{
var polyInts = new Array();
ints = 0;
for (i = 0; i < n; i++)
{
if (!i)
{
ind1 = n-1;
ind2 = 0;
}
else
{
ind1 = i-1;
ind2 = i;
}
y1 = array_y[ind1];
y2 = array_y[ind2];
if (y1 < y2)
{
x1 = array_x[ind1];
x2 = array_x[ind2];
}
else if (y1 > y2)
{
y2 = array_y[ind1];
y1 = array_y[ind2];
x2 = array_x[ind1];
x1 = array_x[ind2];
}
else continue;
if ((y >= y1) && (y < y2))
polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1);
else if ((y == maxy) && (y > y1) && (y <= y2))
polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1);
}
polyInts.sort(integer_compare);
for (i = 0; i < ints; i+=2)
{
w = polyInts[i+1]-polyInts[i]
this.mkDiv(polyInts[i], y, polyInts[i+1]-polyInts[i]+1, 1);
}
}
};
this.drawString = function(txt, x, y)
{
this.htm += '<div style="position:absolute;white-space:nowrap;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'font-family:' + this.ftFam + ';'+
'font-size:' + this.ftSz + ';'+
'color:' + this.color + ';' + this.ftSty + '">'+
txt +
'<\/div>';
}
this.drawImage = function(imgSrc, x, y, w, h)
{
this.htm += '<div style="position:absolute;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:' + w + ';'+
'height:' + h + ';">'+
'<img src="' + imgSrc + '" width="' + w + '" height="' + h + '">'+
'<\/div>';
}
this.clear = function()
{
this.htm = "";
if (this.cnv) this.cnv.innerHTML = this.defhtm;
};
this.mkOvQds = function(cx, cy, xl, xr, yt, yb, w, h)
{
this.mkDiv(xr+cx, yt+cy, w, h);
this.mkDiv(xr+cx, yb+cy, w, h);
this.mkDiv(xl+cx, yb+cy, w, h);
this.mkDiv(xl+cx, yt+cy, w, h);
};
this.setStroke(1);
this.setFont('verdana,geneva,helvetica,sans-serif', String.fromCharCode(0x31, 0x32, 0x70, 0x78), Font.PLAIN);
this.color = '#000000';
this.htm = '';
this.wnd = wnd || window;
if (!(jg_ie || jg_dom || jg_ihtm)) chkDHTM();
if (typeof id != 'string' || !id) this.paint = pntDoc;
else
{
this.cnv = document.all? (this.wnd.document.all[id] || null)
: document.getElementById? (this.wnd.document.getElementById(id) || null)
: null;
this.defhtm = (this.cnv && this.cnv.innerHTML)? this.cnv.innerHTML : '';
this.paint = jg_dom? pntCnvDom : jg_ie? pntCnvIe : jg_ihtm? pntCnvIhtm : pntCnv;
}
this.setPrintable(false);
}
function integer_compare(x,y)
{
return (x < y) ? -1 : ((x > y)*1);
}
