Adapt highlighting of objects: Difference between revisions

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(New page: <jsxgraph width="600" height="600"> var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-5, 5, 5, -5], grid: false}); var p1 = brd.create('point',[3,0]); var p2 = brd.create('point',...)
 
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<html>
<div id="myinfobox"
    style="
        z-Index:99;
        display:none;
        position:absolute;
        left:0px;
        top:0px;
        width:50px;
        background-color:#ffff88;
        padding:5px;
        text-align:center;
        /* Cross-browser opacity:*/
        -ms-filter:'progid:DXImageTransform.Microsoft.Alpha(Opacity=70)';
        filter: alpha(opacity=70);
        opacity:.7;
    "
></div>
</html>
<jsxgraph width="600" height="600">
<jsxgraph width="600" height="600">
// A simple construction, consisting of three points , two lines, one circle.
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-5, 5, 5, -5], grid: false});
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-5, 5, 5, -5], grid: false});
var p1 = brd.create('point',[3,0]);
var p1 = brd.create('point',[3,0]);
var p2 = brd.create('point',[-4,0]);
var p2 = brd.create('point',[-1,0]);
var p3 = brd.create('point',[0,4]);
var p3 = brd.create('point',[0,4]);
var l1 = brd.create('line',[p1,p2]);
var l2 = brd.create('line',[p1,p3]);
var c = brd.create('circle',[p2,p3]);
// First, we overwrite the highling method for ALL lines
var infobox = document.getElementById('myinfobox');
JXG.Line.prototype.highlight = function(){
    var pos = this.getMousePosition
    infobox.innerHTML = this.board.mousePosRel.toString()+'<hr noshade>'+this.name;
    infobox.style.left = (this.board.mousePosRel[0]+0)+'px';
    infobox.style.top =  (this.board.mousePosRel[1]+0)+'px';
    infobox.style.display = 'block';
    this.board.renderer.highlight(this); // highlight the line
}
JXG.Line.prototype.noHighlight = function(){
    infobox.style.display = 'none';
    this.board.renderer.noHighlight(this); // dehighlight the line
}
//Second, we overwrite the highlighting method just for the circle c.
c.highlight = function(){
    infobox.innerHTML = this.board.mousePosRel.toString();
    infobox.style.left = (this.board.mousePosRel[0]+0)+'px';
    infobox.style.top =  (this.board.mousePosRel[0]+0)+'px';
    infobox.style.display = 'block';
}
c.noHighlight = function(){
    infobox.style.display = 'none';
}
</jsxgraph>
</jsxgraph>


===The JavaScript code===
===The JavaScript code===
Create an invisible divsion:
<source lang="html4strict">
<div id="myinfobox"
    style="
        z-Index:99;
        display:none;
        position:absolute;
        left:0px;
        top:0px;
        width:50px;
        background-color:#ffff88;
        padding:5px;
        text-align:center;
        /* Cross-browser opacity:*/
        -ms-filter:'progid:DXImageTransform.Microsoft.Alpha(Opacity=70)';
        filter: alpha(opacity=70);
        opacity:.7;
    "
></div>
</source>
<source lang="javascript">
<source lang="javascript">
// A simple construction, consisting of three points , two lines, one circle.
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-5, 5, 5, -5], grid: false});
var p1 = brd.create('point',[3,0]);
var p2 = brd.create('point',[-1,0]);
var p3 = brd.create('point',[0,4]);
var l1 = brd.create('line',[p1,p2]);
var l2 = brd.create('line',[p1,p3]);
var c = brd.create('circle',[p2,p3]);
// First, we overwrite the highling method for ALL lines
var infobox = document.getElementById('myinfobox');
JXG.Line.prototype.highlight = function(){
    infobox.innerHTML = this.board.mousePosRel.toString()+'<hr noshade>'+this.name;
    infobox.style.left = (this.board.mousePosRel[0]+0)+'px';
    infobox.style.top =  (this.board.mousePosRel[1]+0)+'px';
    infobox.style.display = 'block';
    this.board.renderer.highlight(this); // highlight the line


}
JXG.Line.prototype.noHighlight = function(){
    infobox.style.display = 'none';
    this.board.renderer.noHighlight(this); // dehighlight the line
}
//Second, we overwrite the highlighting method just for the circle c.
c.highlight = function(){
    infobox.innerHTML = this.board.mousePosRel.toString();
    infobox.style.left = (this.board.mousePosRel[0]+0)+'px';
    infobox.style.top =  (this.board.mousePosRel[1]+0)+'px';
    infobox.style.display = 'block';
}
c.noHighlight = function(){
    infobox.style.display = 'none';
}
</source>
</source>
[[Category:Examples]]
 
[[Category:Austragungsstueberl]]

Latest revision as of 15:05, 24 February 2015

The JavaScript code

Create an invisible divsion:

<div id="myinfobox" 
    style="
        z-Index:99;
        display:none;
        position:absolute; 
        left:0px;
        top:0px;
        width:50px;
        background-color:#ffff88;
        padding:5px;
        text-align:center;
        /* Cross-browser opacity:*/
        -ms-filter:'progid:DXImageTransform.Microsoft.Alpha(Opacity=70)'; 
        filter: alpha(opacity=70);
        opacity:.7;
    "
></div>
// A simple construction, consisting of three points , two lines, one circle.
var brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-5, 5, 5, -5], grid: false});
var p1 = brd.create('point',[3,0]);
var p2 = brd.create('point',[-1,0]);
var p3 = brd.create('point',[0,4]);
var l1 = brd.create('line',[p1,p2]);
var l2 = brd.create('line',[p1,p3]);

var c = brd.create('circle',[p2,p3]);

// First, we overwrite the highling method for ALL lines
var infobox = document.getElementById('myinfobox');
JXG.Line.prototype.highlight = function(){
    infobox.innerHTML = this.board.mousePosRel.toString()+'<hr noshade>'+this.name;
    infobox.style.left = (this.board.mousePosRel[0]+0)+'px';
    infobox.style.top =  (this.board.mousePosRel[1]+0)+'px';
    infobox.style.display = 'block';
    this.board.renderer.highlight(this); // highlight the line

}
JXG.Line.prototype.noHighlight = function(){
    infobox.style.display = 'none';
    this.board.renderer.noHighlight(this); // dehighlight the line
}

//Second, we overwrite the highlighting method just for the circle c.
c.highlight = function(){
    infobox.innerHTML = this.board.mousePosRel.toString();
    infobox.style.left = (this.board.mousePosRel[0]+0)+'px';
    infobox.style.top =  (this.board.mousePosRel[1]+0)+'px';
    infobox.style.display = 'block';
}
c.noHighlight = function(){
    infobox.style.display = 'none';
}