Drawing Scratchpad
A blank page that lets you draw freehand diagrams.
Drawing.html
—
HTML,
37Kb
File contents
<html>
<head>
<Title>Drawing Scratch Pad</title>
<!-- ---Script to maximize window on loading --->
<script language="JavaScript">
<!--
top.window.moveTo(0,0);
if (document.all) {
top.window.resizeTo(screen.availWidth,screen.availHeight);
}
else if (document.layers||document.getElementById) {
if (top.window.outerHeight<screen.availHeight||top.window.outerWidth<screen.availWidth){
top.window.outerHeight = screen.availHeight;
top.window.outerWidth = screen.availWidth;
}
}
//-->
</script>
<!----------End maximizing window script------------------------------------------------------->
<style type="text/css" media="print">
.DoNotPrint {
display: none;
}
.noborder {
background: transparent;
overflow: hidden;
border : 0px;
}
</style>
<!-- Mouse function scripts -->
<script type="text/javascript">
var mousex = 0;
var mousey = 0;
var grabx = 0;
var graby = 0;
var orix = 0;
var oriy = 0;
var elex = 0;
var eley = 0;
var algor = 0;
var dragobj = null;
function falsefunc() { return false; } // used to block cascading events
function init()
{
document.onmousemove = update; // update(event) implied on NS, update(null) implied on IE
update();
}
function getMouseXY(e) // works on IE6,FF,Moz,Opera7
{
if (!e) e = window.event; // works on IE, but not NS (we rely on NS passing us the event)
if (e)
{
if (e.pageX || e.pageY)
{ // this doesn't work on IE6!! (works on FF,Moz,Opera7)
mousex = e.pageX;
mousey = e.pageY;
algor = '[e.pageX]';
if (e.clientX || e.clientY) algor += ' [e.clientX] '
}
else if (e.clientX || e.clientY)
{ // works on IE6,FF,Moz,Opera7
// Note: I am adding together both the "body" and "documentElement" scroll positions
// this lets me cover for the quirks that happen based on the "doctype" of the html page.
// (example: IE6 in compatibility mode or strict)
// Based on the different ways that IE,FF,Moz,Opera use these ScrollValues for body and documentElement
// it looks like they will fill EITHER ONE SCROLL VALUE OR THE OTHER, NOT BOTH
// (from info at http://www.quirksmode.org/js/doctypes.html)
mousex = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
mousey = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
algor = '[e.clientX]';
if (e.pageX || e.pageY) algor += ' [e.pageX] '
}
}
}
function grab(context)
{
document.onmousedown = falsefunc; // in NS this prevents cascading of events, thus disabling text selection
dragobj = context;
dragobj.style.zIndex = 10; // move it to the top
document.onmousemove = drag;
document.onmouseup = drop;
grabx = mousex;
graby = mousey;
elex = orix = dragobj.offsetLeft;
eley = oriy = dragobj.offsetTop;
update();
}
function drag(e) // parameter passing is important for NS family
{
if (dragobj)
{
elex = orix + (mousex-grabx);
eley = oriy + (mousey-graby);
dragobj.style.position = "absolute";
dragobj.style.left = (elex).toString(10) + 'px';
dragobj.style.top = (eley).toString(10) + 'px';
}
update(e);
return false; // in IE this prevents cascading of events, thus text selection is disabled
}
function drop()
{
if (dragobj)
{
dragobj.style.zIndex = 0;
dragobj = null;
}
update();
document.onmousemove = update;
document.onmouseup = null;
document.onmousedown = null; // re-enables text selection on NS
}
function update(e)
{
getMouseXY(e); // NS is passing (event), while IE is passing (null)
}
</script>
<!-- js graphics scripts -->
<script type="text/javascript">
/* This notice must be untouched at all times.
wz_jsgraphics.js v. 3.01
The latest version is available at
http://www.walterzorn.com
or http://www.devira.com
or http://www.walterzorn.de
Copyright (c) 2002-2004 Walter Zorn. All rights reserved.
Created 3. 11. 2002 by Walter Zorn (Web: http://www.walterzorn.com )
Last modified: 1. 6. 2007
Performance optimizations for Internet Explorer
by Thomas Frank and John Holdsworth.
fillPolygon method implemented by Matthieu Haller.
High Performance JavaScript Graphics Library.
Provides methods
- to draw lines, rectangles, ellipses, polygons
with specifiable line thickness,
- to fill rectangles, polygons, ellipses and arcs
- to draw text.
NOTE: Operations, functions and branching have rather been optimized
to efficiency and speed than to shortness of source code.
LICENSE: LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License (LGPL) as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA,
or see http://www.gnu.org/copyleft/lesser.html
*/
var jg_ok, jg_ie, jg_fast, jg_dom, jg_moz;
function _chkDHTM(x, i)
{
x = document.body || null;
jg_ie = x && typeof x.insertAdjacentHTML != "undefined" && document.createElement;
jg_dom = (x && !jg_ie &&
typeof x.appendChild != "undefined" &&
typeof document.createRange != "undefined" &&
typeof (i = document.createRange()).setStartBefore != "undefined" &&
typeof i.createContextualFragment != "undefined");
jg_fast = jg_ie && document.all && !window.opera;
jg_moz = jg_dom && typeof x.style.MozOpacity != "undefined";
jg_ok = !!(jg_ie || jg_dom);
}
function _pntCnvDom()
{
var x = this.wnd.document.createRange();
x.setStartBefore(this.cnv);
x = x.createContextualFragment(jg_fast? this._htmRpc() : this.htm);
if(this.cnv) this.cnv.appendChild(x);
this.htm = "";
}
function _pntCnvIe()
{
if(this.cnv) this.cnv.insertAdjacentHTML("BeforeEnd", jg_fast? this._htmRpc() : this.htm);
this.htm = "";
}
function _pntDoc()
{
this.wnd.document.write(jg_fast? this._htmRpc() : this.htm);
this.htm = '';
}
function _pntN()
{
;
}
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>';
}
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>');
}
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>');
}
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)
{--dx;
++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)
{--dy;
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)
{--dy;
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(dx > 0 && 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)
{--dx;
++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)
{--dy;
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)
{--dy;
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)
{--dx;
if(drw) this._mkDiv(x, y, 1, 1);
drw = !drw;
if(p > 0)
{
y += yIncr;
p += pru;
}
else p += pr;
++x;
}
}
else
{
var pr = dx<<1,
pru = pr - (dy<<1),
p = pr-dy;
while(dy > 0)
{--dy;
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,
cx = left+a, cy = top+b,
x = 0, y = b,
ox = 0, oy = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
w, h;
while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
w = x-ox;
h = oy-y;
if((w&2) && (h&2))
{
this._mkOvQds(cx, cy, x-2, y+2, 1, 1, wod, hod);
this._mkOvQds(cx, cy, x-1, y+1, 1, 1, wod, hod);
}
else this._mkOvQds(cx, cy, x-1, oy, w, h, wod, hod);
ox = x;
oy = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
}
w = a-ox+1;
h = (oy<<1)+hod;
y = cy-oy;
this._mkDiv(cx-a, y, w, h);
this._mkDiv(cx+ox+wod-1, y, w, h);
}
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,
cx = left+a, cy = top+b,
x = 0, y = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1);
if(s-4 < 0 && (!(s-2) || width-51 > 0 && height-51 > 0))
{
var ox = 0, oy = b,
w, h,
pxw;
while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((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, oy, pxw, h, wod, hod);
ox = x;
oy = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
}
this._mkDiv(cx-a, cy-oy, s, (oy<<1)+hod);
this._mkDiv(cx+a+wod-s, cy-oy, s, (oy<<1)+hod);
}
else
{
var _a = (width-(s<<1))>>1,
_b = (height-(s<<1))>>1,
_x = 0, _y = _b,
_aa2 = (_a*_a)<<1, _aa4 = _aa2<<1, _bb2 = (_b*_b)<<1, _bb4 = _bb2<<1,
_st = (_aa2>>1)*(1-(_b<<1)) + _bb2,
_tt = (_bb2>>1) - _aa2*((_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)
{
pxl[pxl.length] = x;
pxt[pxt.length] = y;
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
pxl[pxl.length] = x;
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
pxt[pxt.length] = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
if(_y > 0)
{
if(_st < 0)
{
_st += _bb2*((_x<<1)+3);
_tt += _bb4*(++_x);
_pxb[_pxb.length] = _y-1;
}
else if(_tt < 0)
{
_st += _bb2*((_x<<1)+3) - _aa4*(_y-1);
_tt += _bb4*(++_x) - _aa2*(((_y--)<<1)-3);
_pxb[_pxb.length] = _y-1;
}
else
{
_tt -= _aa2*((_y<<1)-3);
_st -= _aa4*(--_y);
_pxb[_pxb.length-1]--;
}
}
}
var ox = -wod, 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, oy, x-ox, oy-_oy, wod, hod);
ox = x;
oy = pxt[i];
_oy = _pxb[i];
}
}
else
{
x = pxl[i];
this._mkDiv(cx-x, 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, hodu = hod^1,
cx = left+a, cy = top+b,
x = 0, y = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
drw = true;
while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
if(drw && y >= hodu) this._mkOvQds(cx, cy, x, y, 1, 1, wod, hod);
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(cnv, wnd)
{
this.setColor = function(x)
{
this.color = x.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 = 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)
{
for (var i=x.length - 1; i;)
{--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, b = h>>1,
wod = w&1, hod = h&1,
cx = left+a, cy = top+b,
x = 0, y = b, oy = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
xl, dw, dh;
if(w) while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
xl = cx-x;
dw = (x<<1)+wod;
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
dh = oy-y;
this._mkDiv(xl, cy-oy, dw, dh);
this._mkDiv(xl, cy+y+hod, dw, dh);
oy = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
}
this._mkDiv(cx-a, cy-oy, w, (oy<<1)+hod);
};
this.fillArc = function(iL, iT, iW, iH, fAngA, fAngZ)
{
var a = iW>>1, b = iH>>1,
iOdds = (iW&1) | ((iH&1) << 16),
cx = iL+a, cy = iT+b,
x = 0, y = b, ox = x, oy = y,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
// Vars for radial boundary lines
xEndA, yEndA, xEndZ, yEndZ,
iSects = (1 << (Math.floor((fAngA %= 360.0)/180.0) << 3))
| (2 << (Math.floor((fAngZ %= 360.0)/180.0) << 3))
| ((fAngA >= fAngZ) << 16),
aBndA = new Array(b+1), aBndZ = new Array(b+1);
// Set up radial boundary lines
fAngA *= Math.PI/180.0;
fAngZ *= Math.PI/180.0;
xEndA = cx+Math.round(a*Math.cos(fAngA));
yEndA = cy+Math.round(-b*Math.sin(fAngA));
_mkLinVirt(aBndA, cx, cy, xEndA, yEndA);
xEndZ = cx+Math.round(a*Math.cos(fAngZ));
yEndZ = cy+Math.round(-b*Math.sin(fAngZ));
_mkLinVirt(aBndZ, cx, cy, xEndZ, yEndZ);
while(y > 0)
{
if(st < 0) // Advance x
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0) // Advance x and y
{
st += bb2*((x<<1)+3) - aa4*(y-1);
ox = x;
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
this._mkArcDiv(ox, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
oy = y;
}
else // Advance y
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
if(y && (aBndA[y] != aBndA[y-1] || aBndZ[y] != aBndZ[y-1]))
{
this._mkArcDiv(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
ox = x;
oy = y;
}
}
}
this._mkArcDiv(x, 0, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
if(iOdds >> 16) // Odd height
{
if(iSects >> 16) // Start-angle > end-angle
{
var xl = (yEndA <= cy || yEndZ > cy)? (cx - x) : cx;
this._mkDiv(xl, cy, x + cx - xl + (iOdds & 0xffff), 1);
}
else if((iSects & 0x01) && yEndZ > cy)
this._mkDiv(cx - x, cy, x, 1);
}
};
/* fillPolygon method, implemented by Matthieu Haller.
This javascript function is an adaptation of the gdImageFilledPolygon for Walter Zorn lib.
C source of GD 1.8.4 found at http://www.boutell.com/gd/
THANKS to Kirsten Schulz for the polygon fixes!
The intersection finding technique of this code could be improved
by remembering the previous intertersection, and by using the slope.
That could help to adjust intersections to produce a nice
interior_extrema. */
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;
// Modified 11. 2. 2004 Walter Zorn
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(_CompInt);
for(i = 0; i < ints; i+=2)
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>';
};
/* drawStringRect() added by Rick Blommers.
Allows to specify the size of the text rectangle and to align the
text both horizontally (e.g. right) and vertically within that rectangle */
this.drawStringRect = function(txt, x, y, width, halign)
{
this.htm += '<div style="position:absolute;overflow:hidden;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:'+width +'px;'+
'text-align:'+halign+';'+
'font-family:' + this.ftFam + ';'+
'font-size:' + this.ftSz + ';'+
'color:' + this.color + ';' + this.ftSty + '">'+
txt +
'<\/div>';
};
this.drawImage = function(imgSrc, x, y, w, h, a)
{
this.htm += '<div style="position:absolute;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:' + w + 'px;'+
'height:' + h + 'px;">'+
'<img src="' + imgSrc + '" width="' + w + '" height="' + h + '"' + (a? (' '+a) : '') + '>'+
'<\/div>';
};
this.clear = function()
{
this.htm = "";
if(this.cnv) this.cnv.innerHTML = "";
};
this._mkOvQds = function(cx, cy, x, y, w, h, wod, hod)
{
var xl = cx - x, xr = cx + x + wod - w, yt = cy - y, yb = cy + y + hod - h;
if(xr > xl+w)
{
this._mkDiv(xr, yt, w, h);
this._mkDiv(xr, yb, w, h);
}
else
w = xr - xl + w;
this._mkDiv(xl, yt, w, h);
this._mkDiv(xl, yb, w, h);
};
this._mkArcDiv = function(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects)
{
var xrDef = cx + x + (iOdds & 0xffff), y2, h = oy - y, xl, xr, w;
if(!h) h = 1;
x = cx - x;
if(iSects & 0xff0000) // Start-angle > end-angle
{
y2 = cy - y - h;
if(iSects & 0x00ff)
{
if(iSects & 0x02)
{
xl = Math.max(x, aBndZ[y]);
w = xrDef - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
if(iSects & 0x01)
{
xr = Math.min(xrDef, aBndA[y]);
w = xr - x;
if(w > 0) this._mkDiv(x, y2, w, h);
}
}
else
this._mkDiv(x, y2, xrDef - x, h);
y2 = cy + y + (iOdds >> 16);
if(iSects & 0xff00)
{
if(iSects & 0x0100)
{
xl = Math.max(x, aBndA[y]);
w = xrDef - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
if(iSects & 0x0200)
{
xr = Math.min(xrDef, aBndZ[y]);
w = xr - x;
if(w > 0) this._mkDiv(x, y2, w, h);
}
}
else
this._mkDiv(x, y2, xrDef - x, h);
}
else
{
if(iSects & 0x00ff)
{
if(iSects & 0x02)
xl = Math.max(x, aBndZ[y]);
else
xl = x;
if(iSects & 0x01)
xr = Math.min(xrDef, aBndA[y]);
else
xr = xrDef;
y2 = cy - y - h;
w = xr - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
if(iSects & 0xff00)
{
if(iSects & 0x0100)
xl = Math.max(x, aBndA[y]);
else
xl = x;
if(iSects & 0x0200)
xr = Math.min(xrDef, aBndZ[y]);
else
xr = xrDef;
y2 = cy + y + (iOdds >> 16);
w = xr - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
}
};
this.setStroke(1);
this.setFont("verdana,geneva,helvetica,sans-serif", "12px", Font.PLAIN);
this.color = "#000000";
this.htm = "";
this.wnd = wnd || window;
if(!jg_ok) _chkDHTM();
if(jg_ok)
{
if(cnv)
{
if(typeof(cnv) == "string")
this.cont = document.all? (this.wnd.document.all[cnv] || null)
: document.getElementById? (this.wnd.document.getElementById(cnv) || null)
: null;
else if(cnv == window.document)
this.cont = document.getElementsByTagName("body")[0];
// If cnv is a direct reference to a canvas DOM node
// (option suggested by Andreas Luleich)
else this.cont = cnv;
// Create new canvas inside container DIV. Thus the drawing and clearing
// methods won't interfere with the container's inner html.
// Solution suggested by Vladimir.
this.cnv = document.createElement("div");
this.cont.appendChild(this.cnv);
this.paint = jg_dom? _pntCnvDom : _pntCnvIe;
}
else
this.paint = _pntDoc;
}
else
this.paint = _pntN;
this.setPrintable(false);
}
function _mkLinVirt(aLin, x1, y1, x2, y2)
{
var dx = Math.abs(x2-x1), dy = Math.abs(y2-y1),
x = x1, y = y1,
xIncr = (x1 > x2)? -1 : 1,
yIncr = (y1 > y2)? -1 : 1,
p,
i = 0;
if(dx >= dy)
{
var pr = dy<<1,
pru = pr - (dx<<1);
p = pr-dx;
while(dx > 0)
{--dx;
if(p > 0) // Increment y
{
aLin[i++] = x;
y += yIncr;
p += pru;
}
else p += pr;
x += xIncr;
}
}
else
{
var pr = dx<<1,
pru = pr - (dy<<1);
p = pr-dy;
while(dy > 0)
{--dy;
y += yIncr;
aLin[i++] = x;
if(p > 0) // Increment x
{
x += xIncr;
p += pru;
}
else p += pr;
}
}
for(var len = aLin.length, i = len-i; i;)
aLin[len-(i--)] = x;
};
function _CompInt(x, y)
{
return(x - y);
}
</script>
<script type="text/javascript">
function Highlight(i){
document.getElementById(i).style.border = "2px solid orange";
}
function RemoveHighlight(i){
document.getElementById(i).style.borderStyle = "none";
}
</script>
</head>
<body onload="init(); ReloadImage();">
<form method="post" action="" name="FormName" id="FormName">
<!-- ----------------------------All textfields/checkboxes/textareas go here...------ -->
<div style="position:absolute; top:10px;left:10px; font-family:arial;font-size:12px;font-weight:bold; text-align:left;">
Name: <input name="PatientName" id="PatientName" class="noborder" style="font-family:arial;font-size:12px; width:320px;text-align:left;vertical-align:bottom;" type="text" oscarDB=patient_name>
Birthdate: <input name="DOB" id="DOB" class="noborder" style="font-family:arial;font-size:12px;width100;text-align:left;vertical-align:bottom;" type="text" oscarDB=DOB>
Date:<input name="Date" id="Date" class="noborder" style="font-family:arial;font-size:12px;width:180px;text-align:left; vertical-align:bottom;" type="text" oscarDB=today>
</div>
<textarea name="Comments" id="Comments" style="position:absolute; top: 630px; left: 10px; width:800px; height: 150px; font-family: arial; font-size: 12px;">Comments</textarea>
<!-- -----------------Hidden input for storing Image data---------------------------------- -->
<input type="hidden" name="TempData" id="TempData">
<input type="hidden" name="DrawData" id="DrawData">
<input type="hidden" name="SubmitData" id="SubmitData">
<!-- ---------------------The submit/print/reset buttons -------------------------------------->
<div class="DoNotPrint" style="position: absolute; top:850px; left: 10px;">
<table>
<tr>
<td>
Subject: <input name="subject" size="80" type="text">
<input value="Submit" name="Submit" type="button" onclick="SubmitImage(); document.FormName.submit()">
<input value="Reset" name="Reset" type="reset">
<input value="Print" name="Print" onclick="window.print()" type="button">
</td>
</tr>
</table>
</div>
</form>
<!-- ------End of submit/print/reset buttons----------------------------------------------------->
<!-- Drawing code: start -->
<div id="preview" style="position:absolute; left: 9px; top:29px; width: 1000px; height: 800px;"></div>
<div id="myCanvas"
style="position:absolute; left: 9px; top:29px; width: 1000px; height: 800px; background:#eeeeee;"
onmouseover="SetDrawOn();"
onmouseout="SetDrawOff();"
onmousedown="SetMouseDown();SetStart();"
onmouseup="SetMouseUp(); DrawMarker();"
onmousemove="DrawPreview();">
</div>
<div id="black" class="DoNotPrint" style="position:absolute; left:1020px;top:40px; width:31px; height:18px; background-color:black; border: 2px solid orange;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div id="grey" class="DoNotPrint" style="position:absolute; left:1020px;top:60px; width:31px; height:18px; background-color:grey;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div id="red" class="DoNotPrint" style="position:absolute; left:1020px;top:80px; width:31px; height:18px; background-color:red;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div id="orange" class="DoNotPrint" style="position:absolute; left:1020px;top:100px; width:31px; height:18px; background-color:orange;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div id="yellow" class="DoNotPrint" style="position:absolute; left:1020px;top:120px; width:31px; height:18px; background-color:yellow;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div id="green" class="DoNotPrint" style="position:absolute; left:1020px;top:140px; width:31px; height:18px; background-color:green;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div id="blue" class="DoNotPrint" style="position:absolute; left:1020px;top:160px; width:31px; height:18px; background-color:blue;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div id="violet" class="DoNotPrint" style="position:absolute; left:1020px;top:180px; width:31px; height:18px; background-color:violet;" onmouseover="Highlight(this.id);" onmouseout="RemoveHighlight(this.id);Highlight(StrokeColor);" onclick="RemoveHighlight(StrokeColor);SetStrokeColor(this.id);"></div>
<div class="DoNotPrint" style="position: absolute; left:1020px; top:200px; width:100px;" >
<input id="UndoButton" type="button" value="Undo" onclick="Undo();"><br>
<input id="ClearButton" type="button" value="Clear" onclick="Clear();">
</div>
<script type="text/javascript">
var cnv = document.getElementById("myCanvas");
var jg = new jsGraphics(cnv);
var cnvLeft = parseInt(document.getElementById('myCanvas').style.left);
var cnvTop = parseInt(document.getElementById('myCanvas').style.top);
var pvcnv = document.getElementById("preview");
var pv = new jsGraphics(pvcnv);
var SubmitData = new Array();
var DrawData = new Array();
var TempData = new Array();
jg.setPrintable(true);
var StrokeColor = "black";
var StrokeThickness = 3;
var x0 = 0;
var y0 = 0;
function SetStrokeColor(c){
StrokeColor = c;
}
var MouseDown = false;
function SetMouseDown(){
MouseDown = true;
}
function SetMouseUp(){
MouseDown = false;
}
var DrawSwitch = false;
function SetDrawOn(){
DrawSwitch = true;
}
function SetDrawOff(){
DrawSwitch = false;
}
var FreehandSwitch = true;
var DrawTool = "Freehand";
function RoundTo(n, d){
//rounds n to the nearest d
var i = Math.round(n/d) * d;
return i;
}
function SetStart(){
x0 = RoundTo( (mousex - cnvLeft),20);
y0 = RoundTo( (mousey - cnvTop),20);
}
var Xposition = new Array();
var Yposition = new Array();
function GetXY(x,y){
var s = StrokeThickness;
var l = Xposition.length - 1; //l = last position
if(Xposition.length<2){
Xposition.push(x);
Yposition.push(y);
}
else {
if ( (Math.abs(Xposition[l] - x) > s) || (Math.abs(Yposition[l] - y) > s)){
Xposition.push(x);
Yposition.push(y);
}
}
}
function ClearXY(){
Xposition = new Array();
Yposition = new Array();
}
function ArrToStr(Arr,s){
//convert array values to string
var Str = "";
for (n = 0; (n < Arr.length); n++)
{
if (n > 0)
{
Str += s; // each set of data separated by s
}
Str += Arr[n];
}
return Str;
}
function StrToArr(Str,s){
//converts string to an array
var Arr = Str.split(s);
for (n=0;n<Arr.length;n++){
Arr[n] = parseInt(Arr[n]);
}
return Arr;
}
function DrawFreehand(canvas,X,Y,StrokeColor){
if (canvas == pv){
jg.setColor(StrokeColor);
jg.setStroke(StrokeThickness);
if (X.length>1){
var a = X.length - 2;
var b = a + 1;
var x1 = parseInt(X[a]);
var y1 = parseInt(Y[a]);
var x2 = parseInt(X[b]);
var y2 = parseInt(Y[b]);
jg.drawLine(x1,y1,x2,y2);
jg.paint();
}
}
if (canvas == jg){
canvas.setColor(StrokeColor);
canvas.setStroke(StrokeThickness);
canvas.drawPolyline(X,Y);
canvas.paint();
//store parameters in an array
var StrX = ArrToStr(X, ':');
var StrY = ArrToStr(Y, ':');
var Parameter = "Freehand" + ";" + StrX + ";" + StrY + ";" + StrokeColor;
DrawData.push(Parameter);
document.getElementById("DrawData").value = DrawData;
}
}
function DrawMarker(){
if(DrawSwitch){
var x = parseInt(mousex - cnvLeft);
var y = parseInt(mousey - cnvTop);
var x2 = RoundTo( (mousex - cnvLeft), 20);
var y2 = RoundTo( (mousey - cnvTop), 20);
if(FreehandSwitch){
DrawFreehand(jg,Xposition,Yposition,StrokeColor);
ClearXY();
}
}
}
function DrawPreview(){
pv.clear();
var x = parseInt(mousex-cnvLeft);
var y = parseInt(mousey-cnvTop);
var x2 = RoundTo( (mousex - cnvLeft),20);
var y2 = RoundTo( (mousey - cnvTop),20);
if (MouseDown){
if(FreehandSwitch){
GetXY(x,y);
DrawFreehand(pv,Xposition,Yposition,StrokeColor);
}
}
}
function RedrawImage(RedrawParameter){
var DrawingType = RedrawParameter[0];
if(DrawingType == "Freehand"){
var X = StrToArr(RedrawParameter[1], ':');
var Y = StrToArr(RedrawParameter[2], ':');
StrokeColor = RedrawParameter[3];
DrawFreehand(jg,X,Y,StrokeColor);
}
}
function Undo(){
jg.clear();
TempData = DrawData;
DrawData = new Array();
document.getElementById("DrawData").value = "";
for (i=0; (i < (TempData.length - 1) ); i++){
var Parameters = TempData[i].split(";");
RedrawImage(Parameters);
}
}
function RecallImage(){
for (i=0; (i < TempData.length);i++){
var Parameters = new Array();
Parameters = TempData[i].split(";");
RedrawImage(Parameters);
}
}
function Clear(){
jg.clear();
TempData = new Array();
DrawData = new Array();
SubmitData = new Array();
document.getElementById("TempData").value = "";
document.getElementById("DrawData").value = "";
document.getElementById("SubmitData").value = "";
Xposition = new Array();
Yposition = new Array();
}
function ClearExceptSubmit(){
jg.clear();
TempData = new Array();
DrawData = new Array();
document.getElementById("TempData").value = "";
document.getElementById("DrawData").value = "";
Xposition = new Array();
Yposition = new Array();
}
function SubmitImage(){
EncodeData();
}
function EncodeData(){
var packed = ""; // Initialize packed or we get the word 'undefined'
//Converting image data in array into a string
for (i = 0; (i < DrawData.length); i++)
{
if (i > 0)
{
packed += ","; // each set of data separated by comma
}
packed += escape(DrawData[i]); //'escape' encodes dataset into unicode
}
document.getElementById("SubmitData").value = packed; //stores image data into hidden form field
}
function DecodeData(){
var query = document.getElementById("SubmitData").value;
var data = query.split(',');
for (i = 0; (i < data.length); i++)
{
data[i] = unescape(data[i]);
}
TempData = data;
DrawData = new Array();
document.getElementById("DrawData").value = document.getElementById("SubmitData").value;
document.getElementById("SubmitData").value = "";
}
function ReloadImage(){
DecodeData();
RecallImage();
}
</script>
<!-- Drawing Code: End -->
</body></html>
