source: code/Website/open-flash-chart/charts/BarBase.as@ 7856

package charts {
        
        import charts.series.Element;
        import charts.Base;
        import string.Utils;
        import global.Global;

        
        public class BarBase extends Base
        {
                protected var group:Number;
                //protected var style:Object;
                protected var props:Properties;
                protected var on_show:Properties;
                
                public function BarBase( json:Object, group:Number )
                {
                
                        var root:Properties = new Properties( {
                                values:                         [],
                                colour:                         '#3030d0',
                                text:                           '',             // <-- default not display a key
                                'font-size':            12,
                                tip:                            '#val#<br>#x_label#',
                                alpha:                          0.6,
                                'on-click':                     false,
                                'axis':                         'left'
                        } );
                        
                        this.props = new Properties(json, root);
                        
                /*
                        var on_show_root:Properties = new Properties( {
                                type:           "none",         //"pop-up",
                                cascade:        3,
                                delay:          0
                                });
                        this.on_show = new Properties(json['on-show'], on_show_root);
                */
                        this.on_show = this.get_on_show(json['on-show']);
                        
                        this.colour             = this.props.get_colour('colour');
                        this.key                = this.props.get('text');
                        this.font_size  = this.props.get('font-size');

                        // Minor hack, replace all #key# with this key text:
                        this.props.set( 'tip', this.props.get('tip').replace('#key#', this.key) );
                        
                        
                        //
                        // 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 = this.props.get('values');
                        this.add_values();
                }
                
                protected function get_on_show(json:Object): Properties {
                        
                        var on_show_root:Properties = new Properties( {
                                type:           "none",         //"pop-up",
                                cascade:        3,
                                delay:          0
                                });
                                
                        return new Properties(json, on_show_root);
                }
                
                
                //
                // hello people in the future! I was doing OK until I found some red wine. Now I can't figure stuff out,
                // like, do I pass in this.axis, or do I make it a member of each PointBarBase? I don't know. Hey, I know
                // I'll flip a coin and see what happens. It was heads. What does it mean? Mmmmm.... red wine....
                // Fuck it, I'm passing it in. Makes the resize method messy, but keeps the PointBarBase clean.
                //
                public override function resize( sc:ScreenCoordsBase ): void {
                        
                        for ( var i:Number = 0; i < this.numChildren; i++ )
                        {
                                var e:Element = this.getChildAt(i) as Element;
                                e.resize( sc );
                        }
                }
                
                
                public override function get_max_x():Number {
                        
                        var max_index:Number = Number.MIN_VALUE;
                        
                        for ( var i:Number = 0; i < this.numChildren; i++ ) {
                                
                                var e:Element = this.getChildAt(i) as Element;
                                max_index = Math.max( max_index, e.index );
                        }
                        
                        // 0 is a position, so count it:
                        return max_index;
                }
                
                public override function get_min_x():Number {
                        return 0;
                }
                
                //
                // override or don't call this if you need better help
                //
                protected function get_element_helper_prop( value:Object ): Properties {
                        
                        var default_style:Properties = new Properties({
                                colour:         this.props.get('colour'),
                                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
                        });
                
                        var s:Properties;
                        if( value is Number )
                                s = new Properties({'top': value}, default_style);
                        else
                                s = new Properties(value, default_style);
                
                        return s;
                }
                
                /*
                                
                              +-----+
                              |  B  |
                        +-----+     |   +-----+
                        |  A  |     |   |  C  +- - -
                        |     |     |   |     |  D
                        +-----+-----+---+-----+- - -
                                 1   2
                        
                */
                        
                
                public override function closest( x:Number, y:Number ): Object {
                        var shortest:Number = Number.MAX_VALUE;
                        var ex:Element = null;
                        
                        for ( var i:Number = 0; i < this.numChildren; i++ )
                        {
                                var e:Element = this.getChildAt(i) as Element;

                                e.is_tip = false;
                                
                                if( (x > e.x) && (x < e.x+e.width) )
                                {
                                        // mouse is in position 1
                                        shortest = Math.min( Math.abs( x - e.x ), Math.abs( x - (e.x+e.width) ) );
                                        ex = e;
                                        break;
                                }
                                else
                                {
                                        // mouse is in position 2
                                        // get distance to left side and right side
                                        var d1:Number = Math.abs( x - e.x );
                                        var d2:Number = Math.abs( x - (e.x+e.width) );
                                        var min:Number = Math.min( d1, d2 );
                                        if( min < shortest )
                                        {
                                                shortest = min;
                                                ex = e;
                                        }
                                }
                        }
                        var dy:Number = Math.abs( y - ex.y );
                        
                        return { element:ex, distance_x:shortest, distance_y:dy };
                }
                
                public override function die():void {
                        super.die();
                        this.props.die();
                }
        }
}