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/**
* $Id: mxMarker.js,v 1.19 2012-03-30 12:51:58 david Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
var mxMarker =
{
/**
* Class: mxMarker
*
* A static class that implements all markers for VML and SVG using a
* registry. NOTE: The signatures in this class will change.
*
* Variable: markers
*
* Maps from markers names to functions to paint the markers.
*/
markers: [],
/**
* Function: paintMarker
*
* Paints the given marker.
*/
paintMarker: function(node, type, p0, pe, color, strokewidth, size, scale, x0, y0, source, style)
{
var marker = mxMarker.markers[type];
var result = null;
if (marker != null)
{
var isVml = mxUtils.isVml(node);
// Computes the norm and the inverse norm
var dx = pe.x - p0.x;
var dy = pe.y - p0.y;
if (isNaN(dx) || isNaN(dy))
{
return;
}
var dist = Math.max(1, Math.sqrt(dx * dx + dy * dy));
var nx = dx * scale / dist;
var ny = dy * scale / dist;
pe = pe.clone();
if (isVml)
{
pe.x -= x0;
pe.y -= y0;
}
// Handles start-/endFill style
var filled = true;
var key = (source) ? mxConstants.STYLE_STARTFILL : mxConstants.STYLE_ENDFILL;
if (style[key] == 0)
{
filled = false;
}
if (isVml)
{
// Opacity is updated in reconfigure, use nf in path for no fill
node.strokecolor = color;
if (filled)
{
node.fillcolor = color;
}
else
{
node.filled = 'false';
}
}
else
{
node.setAttribute('stroke', color);
var op = (style.opacity != null) ? style.opacity / 100 : 1;
node.setAttribute('stroke-opacity', op);
if (filled)
{
node.setAttribute('fill', color);
node.setAttribute('fill-opacity', op);
}
else
{
node.setAttribute('fill', 'none');
}
}
result = marker.call(this, node, type, pe, nx, ny, strokewidth, size, scale, isVml);
}
return result;
}
};
(function()
{
/**
* Drawing of the classic and block arrows.
*/
var tmp = function(node, type, pe, nx, ny, strokewidth, size, scale, isVml)
{
// The angle of the forward facing arrow sides against the x axis is
// 26.565 degrees, 1/sin(26.565) = 2.236 / 2 = 1.118 ( / 2 allows for
// only half the strokewidth is processed ).
var endOffsetX = nx * strokewidth * 1.118;
var endOffsetY = ny * strokewidth * 1.118;
pe.x -= endOffsetX;
pe.y -= endOffsetY;
nx = nx * (size + strokewidth);
ny = ny * (size + strokewidth);
if (isVml)
{
node.path = 'm' + Math.round(pe.x) + ',' + Math.round(pe.y) +
' l' + Math.round(pe.x - nx - ny / 2) + ' ' + Math.round(pe.y - ny + nx / 2) +
((type != mxConstants.ARROW_CLASSIC) ? '' :
' ' + Math.round(pe.x - nx * 3 / 4) + ' ' + Math.round(pe.y - ny * 3 / 4)) +
' ' + Math.round(pe.x + ny / 2 - nx) + ' ' + Math.round(pe.y - ny - nx / 2) +
' x e';
node.setAttribute('strokeweight', (strokewidth * scale) + 'px');
}
else
{
node.setAttribute('d', 'M ' + pe.x + ' ' + pe.y +
' L ' + (pe.x - nx - ny / 2) + ' ' + (pe.y - ny + nx / 2) +
((type != mxConstants.ARROW_CLASSIC) ? '' :
' L ' + (pe.x - nx * 3 / 4) + ' ' + (pe.y - ny * 3 / 4)) +
' L ' + (pe.x + ny / 2 - nx) + ' ' + (pe.y - ny - nx / 2) +
' z');
node.setAttribute('stroke-width', strokewidth * scale);
}
var f = (type != mxConstants.ARROW_CLASSIC) ? 1 : 3 / 4;
return new mxPoint(-nx * f - endOffsetX, -ny * f - endOffsetY);
};
mxMarker.markers[mxConstants.ARROW_CLASSIC] = tmp;
mxMarker.markers[mxConstants.ARROW_BLOCK] = tmp;
}());
mxMarker.markers[mxConstants.ARROW_OPEN] = function(node, type, pe, nx, ny, strokewidth, size, scale, isVml)
{
// The angle of the forward facing arrow sides against the x axis is
// 26.565 degrees, 1/sin(26.565) = 2.236 / 2 = 1.118 ( / 2 allows for
// only half the strokewidth is processed ).
var endOffsetX = nx * strokewidth * 1.118;
var endOffsetY = ny * strokewidth * 1.118;
pe.x -= endOffsetX;
pe.y -= endOffsetY;
nx = nx * (size + strokewidth);
ny = ny * (size + strokewidth);
if (isVml)
{
node.path = 'm' + Math.round(pe.x - nx - ny / 2) + ' ' + Math.round(pe.y - ny + nx / 2) +
' l' + Math.round(pe.x) + ' ' + Math.round(pe.y) +
' ' + Math.round(pe.x + ny / 2 - nx) + ' ' + Math.round(pe.y - ny - nx / 2) +
' e nf';
node.setAttribute('strokeweight', (strokewidth * scale) + 'px');
}
else
{
node.setAttribute('d', 'M ' + (pe.x - nx - ny / 2) + ' ' + (pe.y - ny + nx / 2) +
' L ' + (pe.x) + ' ' + (pe.y) +
' L ' + (pe.x + ny / 2 - nx) + ' ' + (pe.y - ny - nx / 2));
node.setAttribute('stroke-width', strokewidth * scale);
node.setAttribute('fill', 'none');
}
return new mxPoint(-endOffsetX * 2, -endOffsetY * 2);
};
mxMarker.markers[mxConstants.ARROW_OVAL] = function(node, type, pe, nx, ny, strokewidth, size, scale, isVml)
{
nx *= size;
ny *= size;
nx *= 0.5 + strokewidth / 2;
ny *= 0.5 + strokewidth / 2;
var absSize = size * scale;
var radius = absSize / 2;
if (isVml)
{
node.path = 'm' + Math.round(pe.x + radius) + ' ' + Math.round(pe.y) +
' at ' + Math.round(pe.x - radius) + ' ' + Math.round(pe.y - radius) +
' ' + Math.round(pe.x + radius) + ' ' + Math.round(pe.y + radius) +
' ' + Math.round(pe.x + radius) + ' ' + Math.round(pe.y) +
' ' + Math.round(pe.x + radius) + ' ' + Math.round(pe.y) +
' x e';
node.setAttribute('strokeweight', (strokewidth * scale) + 'px');
}
else
{
node.setAttribute('d', 'M ' + (pe.x - radius) + ' ' + (pe.y) +
' a ' + (radius) + ' ' + (radius) +
' 0 1,1 ' + (absSize) + ' 0' +
' a ' + (radius) + ' ' + (radius) +
' 0 1,1 ' + (-absSize) + ' 0 z');
node.setAttribute('stroke-width', strokewidth * scale);
}
return new mxPoint(-nx / (2 + strokewidth), -ny / (2 + strokewidth));
};
(function()
{
/**
* Drawing of the diamond and thin diamond markers
*/
var tmp_diamond = function(node, type, pe, nx, ny, strokewidth, size, scale, isVml)
{
// The angle of the forward facing arrow sides against the x axis is
// 45 degrees, 1/sin(45) = 1.4142 / 2 = 0.7071 ( / 2 allows for
// only half the strokewidth is processed ). Or 0.9862 for thin diamond.
// Note these values and the tk variable below are dependent, update
// both together (saves trig hard coding it).
var swFactor = (type == mxConstants.ARROW_DIAMOND) ? 0.7071 : 0.9862;
var endOffsetX = nx * strokewidth * swFactor;
var endOffsetY = ny * strokewidth * swFactor;
nx = nx * (size + strokewidth);
ny = ny * (size + strokewidth);
pe.x -= endOffsetX + nx / 2;
pe.y -= endOffsetY + ny / 2;
// thickness factor for diamond
var tk = ((type == mxConstants.ARROW_DIAMOND) ? 2 : 3.4);
if (isVml)
{
node.path = 'm' + Math.round(pe.x + nx / 2) + ' ' + Math.round(pe.y + ny / 2) +
' l' + Math.round(pe.x - ny / tk) + ' ' + Math.round(pe.y + nx / tk) +
' ' + Math.round(pe.x - nx / 2) + ' ' + Math.round(pe.y - ny / 2) +
' ' + Math.round(pe.x + ny / tk) + ' ' + Math.round(pe.y - nx / tk) +
' x e';
node.setAttribute('strokeweight', (strokewidth * scale) + 'px');
}
else
{
node.setAttribute('d', 'M ' + (pe.x + nx / 2) + ' ' + (pe.y + ny / 2) +
' L ' + (pe.x - ny / tk) + ' ' + (pe.y + nx / tk) +
' L ' + (pe.x - nx / 2) + ' ' + (pe.y - ny / 2) +
' L ' + (pe.x + ny / tk) + ' ' + (pe.y - nx / tk) +
' z');
node.setAttribute('stroke-width', strokewidth * scale);
}
return new mxPoint(-endOffsetX - nx, -endOffsetY - ny);
};
mxMarker.markers[mxConstants.ARROW_DIAMOND] = tmp_diamond;
mxMarker.markers[mxConstants.ARROW_DIAMOND_THIN] = tmp_diamond;
}());
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