@ -38,6 +38,7 @@ function Edge (properties, network, networkConstants) {
this . value = undefined ;
this . selected = false ;
this . hover = false ;
this . labelDimensions = { top : 0 , left : 0 , width : 0 , height : 0 } ;
this . from = null ; // a node
this . to = null ; // a node
@ -547,22 +548,26 @@ Edge.prototype._label = function (ctx, text, x, y) {
// TODO: cache the calculated size
ctx . font = ( ( this . from . selected || this . to . selected ) ? "bold " : "" ) +
this . options . fontSize + "px " + this . options . fontFace ;
ctx . fillStyle = this . options . fontFill ;
var lines = String ( text ) . split ( '\n' ) ;
var lineCount = lines . length ;
var fontSize = ( Number ( this . options . fontSize ) + 4 ) ;
var yLine = y + ( 1 - lineCount ) / 2 * fontSize ;
var width = ctx . measureText ( lines [ 0 ] ) . width ;
for ( var i = 1 ; i < lineCount ; i ++ ) {
var lineWidth = ctx . measureText ( lines [ i ] ) . width ;
width = lineWidth > width ? lineWidth : width ;
}
var height = this . options . fontSize * lineCount ;
var left = x - width / 2 ;
var top = y - height / 2 ;
this . labelDimensions = { top : top , left : left , width : width , height : height } ;
if ( this . options . fontFill !== undefined && this . options . fontFill !== null && this . options . fontFill !== "none" ) {
var width = ctx . measureText ( lines [ 0 ] ) . width ;
for ( var i = 1 ; i < lineCount ; i ++ ) {
var lineWidth = ctx . measureText ( lines [ i ] ) . width ;
width = lineWidth > width ? lineWidth : width ;
}
var height = this . options . fontSize * lineCount ;
var left = x - width / 2 ;
var top = y - height / 2 ;
ctx . fillStyle = this . options . fontFill ;
ctx . fillRect ( left , top , width , height ) ;
}
@ -918,6 +923,7 @@ Edge.prototype._drawArrow = function(ctx) {
* @ private
* /
Edge . prototype . _getDistanceToEdge = function ( x1 , y1 , x2 , y2 , x3 , y3 ) { // x3,y3 is the point
var returnValue = 0 ;
if ( this . from != this . to ) {
if ( this . options . smoothCurves . enabled == true ) {
var xVia , yVia ;
@ -943,10 +949,10 @@ Edge.prototype._getDistanceToEdge = function (x1,y1, x2,y2, x3,y3) { // x3,y3 is
}
lastX = x ; lastY = y ;
}
return minDistance
returnValue = minDistance ;
}
else {
return this . _getDistanceToLine ( x1 , y1 , x2 , y2 , x3 , y3 ) ;
returnValue = this . _getDistanceToLine ( x1 , y1 , x2 , y2 , x3 , y3 ) ;
}
}
else {
@ -963,7 +969,17 @@ Edge.prototype._getDistanceToEdge = function (x1,y1, x2,y2, x3,y3) { // x3,y3 is
}
dx = x - x3 ;
dy = y - y3 ;
return Math . abs ( Math . sqrt ( dx * dx + dy * dy ) - radius ) ;
returnValue = Math . abs ( Math . sqrt ( dx * dx + dy * dy ) - radius ) ;
}
if ( this . labelDimensions . left < x3 &&
this . labelDimensions . left + this . labelDimensions . width > x3 &&
this . labelDimensions . top < y3 &&
this . labelDimensions . top + this . labelDimensions . height > y3 ) {
return 0 ;
}
else {
return returnValue ;
}
} ;