source: code/Website/open-flash-chart/charts/BarStack.as

package charts {
        import charts.series.Element;
        import charts.series.bars.StackCollection;
        import string.Utils;
        import com.serialization.json.JSON;
        import flash.geom.Point;
        
        
        public class BarStack extends BarBase {
                
                public function BarStack( json:Object, num:Number, group:Number ) {
        
                        // don't let the parent do anything, we just want to
                        // use some of the more useful methods
                        super( { }, 0);
                        
                        // now do all the setup
                        var root:Properties = new Properties( {
                                values:                         [],
                                keys:                           [],
                                colours:                        ['#FF0000','#00FF00'],  // <-- ugly default colours
                                text:                           '',             // <-- default not display a key
                                'font-size':            12,
                                tip:                            '#x_label# : #val#<br>Total: #total#',
                                alpha:                          0.6,
                                'on-click':                     false,
                                'axis':                         'left'
                        } );
                        
                        this.props = new Properties(json, root);
                        
                        this.on_show = this.get_on_show(json['on-show']);
                        //
                        // bars are grouped, so 3 bar sets on one chart
                        // will arrange them selves next to each other
                        // at each value of X, this.group tell the bar
                        // where it is in that grouping
                        //
                        this.group = group;
                
                        this.values = json.values;

                        this.add_values();
                }
                
                //
                // return an array of key info objects:
                //
                public override function get_keys(): Object {
                        
                        var tmp:Array = [];
                        
                        for each( var o:Object in this.props.get('keys') ) {
                                if ( o.text && o['font-size'] && o.colour ) {
                                        o.colour = string.Utils.get_colour( o.colour );
                                        tmp.push( o );
                                }
                        }
                        
                        return tmp;
                }
                
                //
                // value is an array (a stack) of bar stacks
                //
                protected override function get_element( index:Number, value:Object ): Element {
                        
                        //
                        // this is the style for a stack:
                        //
                        var default_style:Properties = new Properties({
                                colours:                this.props.get('colours'),
                                tip:                    this.props.get('tip'),
                                alpha:                  this.props.get('alpha'),
                                'on-click':             this.props.get('on-click'),
                                axis:                   this.props.get('axis'),
                                'on-show':              this.on_show,
                                values:                 value
                        });

                        return new StackCollection( index, default_style, this.group );
                }
                
                
                //
                // get all the Elements at this X position
                //
                protected override function get_all_at_this_x_pos( x:Number ):Array {
                        
                        var tmp:Array = new Array();
                        var p:flash.geom.Point;
                        var e:StackCollection;
                        
                        for ( var i:Number = 0; i < this.numChildren; i++ ) {
                        
                                // some of the children will will mask
                                // Sprites, so filter those out:
                                //
                                if( this.getChildAt(i) is Element ) {
                
                                        e = this.getChildAt(i) as StackCollection;
                                
                                        p = e.get_mid_point();
                                        if ( p.x == x ) {
                                                var children:Array = e.get_children();
                                                for each( var child:Element in children )
                                                        tmp.push( child );
                                        }
                                }
                        }
                        
                        return tmp;
                }
        }
}