diff options
Diffstat (limited to 'libs/open-flash-chart/actionscript/Box.as')
| -rw-r--r-- | libs/open-flash-chart/actionscript/Box.as | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/libs/open-flash-chart/actionscript/Box.as b/libs/open-flash-chart/actionscript/Box.as new file mode 100644 index 0000000000..b94e223fb0 --- /dev/null +++ b/libs/open-flash-chart/actionscript/Box.as @@ -0,0 +1,164 @@ +class Box
+{
+ public var top:Number=0;
+ public var left:Number=0;
+ public var right:Number=0;
+ public var bottom:Number=0;
+ public var width:Number=0;
+ public var height:Number=0;
+
+ // position of the zero line
+ //public var zero:Number=0;
+ //public var steps:Number=0;
+
+ // set by 3D axis
+ public var tick_offset:Number=0;
+
+ public var count:Number = 0;
+
+ private var minmax:MinMax;
+
+ public function Box( top:Number, left:Number, right:Number, bottom:Number,
+ minmax:MinMax,
+ x_left_label_width:Number, x_right_label_width:Number,
+ count:Number, jiggle:Boolean, three_d:Boolean )
+ {
+
+ var tmp_left:Number = left;
+
+ if( jiggle )
+ {
+ right = this.jiggle( left, right, x_right_label_width, count );
+ tmp_left = this.shrink_left( left, right, x_left_label_width, count );
+ }
+
+ this.top = top;
+ this.left = Math.max(left,tmp_left);
+
+ // round this down to the nearest int:
+ this.right = Math.floor( right );
+ this.bottom = bottom;
+ this.width = this.right-this.left;
+ this.height = bottom-top;
+
+ //this.steps = this.height/(minmax.y_max-minmax.y_min);
+ //this.zero = bottom-(steps*(minmax.y_min*-1));
+
+ this.count = count;
+ this.minmax = minmax;
+
+ if( three_d )
+ {
+ // tell the box object that the
+ // X axis labels need to be offset
+ this.tick_offset = 12;
+ }
+ }
+
+ //
+ // if the last X label is wider than the chart area, the last few letters will
+ // be outside the drawing area. So we make the chart width smaller so the label
+ // will fit into the screen.
+ //
+ function jiggle( left:Number, right:Number, x_label_width:Number, count:Number )
+ {
+ var r:Number = 0;
+
+ if( x_label_width != 0 )
+ {
+ var item_width:Number = (right-left) / count;
+ var r:Number = right-(item_width/2);
+ var new_right:Number = right;
+
+ // while the right most X label is off the edge of the
+ // Stage, move the box.right - 1
+ while( r+(x_label_width/2) > right )
+ {
+ new_right -= 1;
+ // changing the right also changes the item_width:
+ item_width = (new_right-left) / count;
+ r = new_right-(item_width/2);
+ }
+ right = new_right;
+ }
+
+ return right;
+
+ }
+
+ // if the left label is truncated, shrink the box until
+ // it fits onto the screen
+ function shrink_left( left:Number, right:Number, x_label_width:Number, count:Number )
+ {
+ var pos:Number = 0;
+
+ if( x_label_width != 0 )
+ {
+ var item_width:Number = (right-left) / count;
+ var pos:Number = left+(item_width/2);
+ var new_left:Number = left;
+
+ // while the left most label is hanging off the Stage
+ // move the box.left in one pixel:
+ while( pos-(x_label_width/2) < 0 )
+ {
+ new_left += 1;
+ // changing the left also changes the item_width:
+ item_width = (right-new_left) / count;
+ pos = new_left+(item_width/2);
+ }
+ left = new_left;
+ }
+
+ return left;
+
+ }
+
+ //
+ // the bottom point of a bar:
+ // min=-100 and max=100, use b.zero
+ // min = 10 and max = 20, use b.bottom
+ //
+ function getYbottom( right_axis:Boolean )
+ {
+ var min:Number = this.minmax.min( right_axis );
+ return this.getY( Math.max(0,min), right_axis );
+ }
+
+ // takes a value and returns the screen Y location
+ function getY( i:Number, right_axis:Boolean )
+ {
+ var steps:Number = this.height/(this.minmax.range( right_axis ));
+
+ // find Y pos for value=zero
+ var y:Number = this.bottom-(steps*(this.minmax.min( right_axis )*-1));
+
+ // move up (-Y) to our point (don't forget that y_min will shift it down)
+ y -= i*steps;
+ return y;
+ }
+
+ function width_():Number
+ {
+ return this.right-this.left_();
+ }
+
+ function left_():Number
+ {
+ var padding_left:Number = this.tick_offset;
+ return this.left+padding_left;
+ }
+
+ function get_x_pos( i:Number )
+ {
+ var item_width:Number = this.width_() / this.count;
+ return this.left_()+(item_width/2)+(i*item_width);
+ }
+
+ function get_x_tick_pos( i:Number )
+ {
+ //var item_width:Number = (this.right-this.left_()) / this.count;
+
+ return this.get_x_pos(i) - this.tick_offset;
+ }
+}
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