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/**
* $Id: mxLine.js,v 1.36 2012-03-30 04:44:59 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
/**
* Class: mxLine
*
* Extends <mxShape> to implement a horizontal line shape.
* This shape is registered under <mxConstants.SHAPE_LINE> in
* <mxCellRenderer>.
*
* Constructor: mxLine
*
* Constructs a new line shape.
*
* Parameters:
*
* bounds - <mxRectangle> that defines the bounds. This is stored in
* <mxShape.bounds>.
* stroke - String that defines the stroke color. Default is 'black'. This is
* stored in <stroke>.
* strokewidth - Optional integer that defines the stroke width. Default is
* 1. This is stored in <strokewidth>.
*/
function mxLine(bounds, stroke, strokewidth)
{
this.bounds = bounds;
this.stroke = stroke;
this.strokewidth = (strokewidth != null) ? strokewidth : 1;
};
/**
* Extends mxShape.
*/
mxLine.prototype = new mxShape();
mxLine.prototype.constructor = mxLine;
/**
* Variable: vmlNodes
*
* Adds local references to <mxShape.vmlNodes>.
*/
mxLine.prototype.vmlNodes = mxLine.prototype.vmlNodes.concat(['label', 'innerNode']);
/**
* Variable: mixedModeHtml
*
* Overrides the parent value with false, meaning it will
* draw in VML in mixed Html mode.
*/
mxLine.prototype.mixedModeHtml = false;
/**
* Variable: preferModeHtml
*
* Overrides the parent value with false, meaning it will
* draw as VML in prefer Html mode.
*/
mxLine.prototype.preferModeHtml = false;
/**
* Function: clone
*
* Overrides the clone method to add special fields.
*/
mxLine.prototype.clone = function()
{
var clone = new mxLine(this.bounds,
this.stroke, this.strokewidth);
clone.isDashed = this.isDashed;
return clone;
};
/**
* Function: createVml
*
* Creates and returns the VML node to represent this shape.
*/
mxLine.prototype.createVml = function()
{
var node = document.createElement('v:group');
node.style.position = 'absolute';
// Represents the text label container
this.label = document.createElement('v:rect');
this.label.style.position = 'absolute';
this.label.stroked = 'false';
this.label.filled = 'false';
node.appendChild(this.label);
// Represents the straight line shape
this.innerNode = document.createElement('v:shape');
this.configureVmlShape(this.innerNode);
node.appendChild(this.innerNode);
return node;
};
/**
* Function: redrawVml
*
* Redraws this VML shape by invoking <updateVmlShape> on this.node.
*/
mxLine.prototype.reconfigure = function()
{
if (mxUtils.isVml(this.node))
{
this.configureVmlShape(this.innerNode);
}
else
{
mxShape.prototype.reconfigure.apply(this, arguments);
}
};
/**
* Function: redrawVml
*
* Updates the VML node(s) to reflect the latest bounds and scale.
*/
mxLine.prototype.redrawVml = function()
{
this.updateVmlShape(this.node);
this.updateVmlShape(this.label);
this.innerNode.coordsize = this.node.coordsize;
this.innerNode.strokeweight = (this.strokewidth * this.scale) + 'px';
this.innerNode.style.width = this.node.style.width;
this.innerNode.style.height = this.node.style.height;
var w = this.bounds.width;
var h =this.bounds.height;
if (this.direction == mxConstants.DIRECTION_NORTH ||
this.direction == mxConstants.DIRECTION_SOUTH)
{
this.innerNode.path = 'm ' + Math.round(w / 2) + ' 0' +
' l ' + Math.round(w / 2) + ' ' + Math.round(h) + ' e';
}
else
{
this.innerNode.path = 'm 0 ' + Math.round(h / 2) +
' l ' + Math.round(w) + ' ' + Math.round(h / 2) + ' e';
}
};
/**
* Function: createSvg
*
* Creates and returns the SVG node(s) to represent this shape.
*/
mxLine.prototype.createSvg = function()
{
var g = this.createSvgGroup('path');
// Creates an invisible shape around the path for easier
// selection with the mouse. Note: Firefox does not ignore
// the value of the stroke attribute for pointer-events: stroke.
// It does, however, ignore the visibility attribute.
this.pipe = this.createSvgPipe();
g.appendChild(this.pipe);
return g;
};
/**
* Function: redrawSvg
*
* Updates the SVG node(s) to reflect the latest bounds and scale.
*/
mxLine.prototype.redrawSvg = function()
{
var strokeWidth = Math.round(Math.max(1, this.strokewidth * this.scale));
this.innerNode.setAttribute('stroke-width', strokeWidth);
if (this.bounds != null)
{
var x = this.bounds.x;
var y = this.bounds.y;
var w = this.bounds.width;
var h = this.bounds.height;
var d = null;
if (this.direction == mxConstants.DIRECTION_NORTH || this.direction == mxConstants.DIRECTION_SOUTH)
{
d = 'M ' + Math.round(x + w / 2) + ' ' + Math.round(y) + ' L ' + Math.round(x + w / 2) + ' ' + Math.round(y + h);
}
else
{
d = 'M ' + Math.round(x) + ' ' + Math.round(y + h / 2) + ' L ' + Math.round(x + w) + ' ' + Math.round(y + h / 2);
}
this.innerNode.setAttribute('d', d);
this.pipe.setAttribute('d', d);
this.pipe.setAttribute('stroke-width', this.strokewidth + mxShape.prototype.SVG_STROKE_TOLERANCE);
this.updateSvgTransform(this.innerNode, false);
this.updateSvgTransform(this.pipe, false);
if (this.crisp)
{
this.innerNode.setAttribute('shape-rendering', 'crispEdges');
}
else
{
this.innerNode.removeAttribute('shape-rendering');
}
if (this.isDashed)
{
var phase = Math.max(1, Math.round(3 * this.scale * this.strokewidth));
this.innerNode.setAttribute('stroke-dasharray', phase + ' ' + phase);
}
}
};
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