| [7849] | 1 | package charts.series.bars {
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| 2 |
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| 3 | import flash.display.Sprite;
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| 4 | import flash.geom.Point;
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| 5 | import charts.series.bars.Base;
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| 6 |
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| 7 | public class ECandle extends Base {
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| 8 | protected var high:Number;
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| 9 | protected var low:Number;
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| 10 | protected var negative_colour:Number;
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| 11 |
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| 12 |
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| 13 | public function ECandle( index:Number, props:Properties, group:Number ) {
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| 14 |
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| 15 | super(index, props, group);
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| 16 |
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| 17 | tr.aces( props.has('negative-colour'), props.get_colour('negative-colour'));
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| 18 |
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| 19 | if( props.has('negative-colour') )
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| 20 | this.negative_colour = props.get_colour('negative-colour');
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| 21 | else
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| 22 | this.negative_colour = this.colour;
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| 23 | }
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| 24 |
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| 25 | //
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| 26 | // a candle chart has many values used to display each point
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| 27 | //
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| 28 | protected override function parse_value( props:Properties ):void {
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| 29 |
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| 30 | // set top (open) and bottom (close)
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| 31 | super.parse_value( props );
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| 32 | this.high = props.get('high');
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| 33 | this.low = props.get('low');
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| 34 | }
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| 35 |
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| 36 | protected override function replace_magic_values( t:String ): String {
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| 37 |
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| 38 | t = super.replace_magic_values( t );
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| 39 | t = t.replace('#high#', NumberUtils.formatNumber( this.high ));
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| 40 | t = t.replace('#open#', NumberUtils.formatNumber( this.top ));
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| 41 | t = t.replace('#close#', NumberUtils.formatNumber( this.bottom ));
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| 42 | t = t.replace('#low#', NumberUtils.formatNumber( this.low ));
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| 43 |
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| 44 | return t;
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| 45 | }
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| 46 |
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| 47 | public override function resize( sc:ScreenCoordsBase ):void {
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| 48 |
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| 49 | // this moves everyting relative to the box (NOT the whiskers)
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| 50 | var h:Object = this.resize_helper( sc as ScreenCoords );
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| 51 |
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| 52 | //
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| 53 | //var bar_high:Number = 0;
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| 54 | //var bar_low:Number = height;
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| 55 |
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| 56 | // calculate the box position:
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| 57 | var tmp:Number = sc.get_y_from_val(Math.max(this.top, this.bottom), this.right_axis);
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| 58 | var bar_high:Number = sc.get_y_from_val(this.high, this.right_axis) - tmp;
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| 59 | var bar_top:Number = 0;
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| 60 | var bar_bottom:Number = sc.get_y_from_val(this.bottom, this.right_axis) - tmp;
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| 61 | var bar_low:Number = sc.get_y_from_val(this.low, this.right_axis) - tmp;
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| 62 |
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| 63 | //var height:Number = Math.abs( bar_bottom - bar_top );
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| 64 |
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| 65 | //
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| 66 | // move the Sprite to the correct screen location:
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| 67 | //
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| 68 | //this.y = bar_high;
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| 69 | //this.x = tmp.x;
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| 70 |
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| 71 | //
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| 72 | // tell the tooltip where to show its self
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| 73 | //
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| 74 | this.tip_pos = new flash.geom.Point( this.x + (h.width / 2), this.y );
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| 75 |
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| 76 | var mid:Number = h.width / 2;
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| 77 | this.graphics.clear();
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| 78 | var c:Number = this.colour;
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| 79 | if ( h.upside_down)
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| 80 | c = this.negative_colour;
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| 81 |
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| 82 | this.top_line(c, mid, bar_high);
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| 83 |
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| 84 | if ( this.top == this.bottom )
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| 85 | this.draw_doji(c, h.width, bar_top);
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| 86 | else
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| 87 | this.draw_box(c, bar_top, h.height, h.width, h.upside_down);
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| 88 |
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| 89 | this.bottom_line(c, mid, h.height, bar_low);
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| 90 | // top line
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| 91 |
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| 92 | //
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| 93 | // tell the tooltip where to show its self
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| 94 | //
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| 95 | this.tip_pos = new flash.geom.Point(
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| 96 | this.x + (h.width / 2),
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| 97 | this.y + bar_high );
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| 98 | }
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| 99 |
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| 100 | private function top_line(colour:Number, mid:Number, height:Number): void {
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| 101 | // top line
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| 102 | this.graphics.beginFill( colour, 1.0 );
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| 103 | this.graphics.moveTo( mid-1, 0 );
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| 104 | this.graphics.lineTo( mid+1, 0 );
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| 105 | this.graphics.lineTo( mid+1, height );
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| 106 | this.graphics.lineTo( mid-1, height );
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| 107 | this.graphics.endFill();
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| 108 | }
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| 109 |
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| 110 | private function bottom_line(colour:Number, mid:Number, top:Number, bottom:Number):void {
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| 111 | this.graphics.beginFill( colour, 1.0 );
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| 112 | this.graphics.moveTo( mid-1, top );
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| 113 | this.graphics.lineTo( mid+1, top );
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| 114 | this.graphics.lineTo( mid+1, bottom );
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| 115 | this.graphics.lineTo( mid-1, bottom );
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| 116 | this.graphics.endFill();
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| 117 | }
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| 118 |
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| 119 | //
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| 120 | // http://en.wikipedia.org/wiki/Candlestick_chart
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| 121 | //
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| 122 | private function draw_doji(colour:Number, width:Number, pos:Number):void {
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| 123 | // box
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| 124 | this.graphics.beginFill( colour, 1.0 );
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| 125 | this.graphics.moveTo( 0, pos-1 );
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| 126 | this.graphics.lineTo( width, pos-1 );
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| 127 | this.graphics.lineTo( width, pos+1 );
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| 128 | this.graphics.lineTo( 0, pos+1 );
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| 129 | this.graphics.endFill();
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| 130 | }
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| 131 |
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| 132 |
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| 133 |
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| 134 | private function draw_box(colour:Number, top:Number, bottom:Number, width:Number, upside_down:Boolean):void {
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| 135 |
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| 136 | // box
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| 137 | this.graphics.beginFill( colour, 1.0 );
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| 138 | this.graphics.moveTo( 0, top );
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| 139 | this.graphics.lineTo( width, top );
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| 140 | this.graphics.lineTo( width, bottom );
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| 141 | this.graphics.lineTo( 0, bottom );
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| 142 | this.graphics.lineTo( 0, top );
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| 143 |
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| 144 | if ( upside_down) {
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| 145 | // snip out the middle of the box:
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| 146 | this.graphics.moveTo( 2, top+2 );
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| 147 | this.graphics.lineTo( width-2, top+2 );
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| 148 | this.graphics.lineTo( width-2, bottom-2 );
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| 149 | this.graphics.lineTo( 2, bottom-2 );
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| 150 | this.graphics.lineTo( 2, top+2 );
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| 151 | }
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| 152 | this.graphics.endFill();
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| 153 |
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| 154 | if ( upside_down ) {
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| 155 |
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| 156 | //
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| 157 | // HACK: we fill an invisible rect over
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| 158 | // the hollow rect so the mouse over
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| 159 | // event fires correctly (even when the
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| 160 | // mouse is in the hollow part)
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| 161 | //
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| 162 | this.graphics.lineStyle( 0, 0, 0 );
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| 163 | this.graphics.beginFill(0, 0);
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| 164 | this.graphics.moveTo( 2, top-2 );
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| 165 | this.graphics.lineTo( width-2, top-2 );
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| 166 | this.graphics.lineTo( width-2, bottom-2 );
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| 167 | this.graphics.lineTo( 2, bottom-2 );
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| 168 | this.graphics.endFill();
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| 169 | }
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| 170 | }
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| 171 |
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| 172 | }
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| 173 | }
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