verticallinesviewer.as

flex的一些小例子

/*

Copyright (c) 2006. Adobe Systems Incorporated.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

  * Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.
  * Redistributions in binary form must reproduce the above copyright notice,
    this list of conditions and the following disclaimer in the documentation
    and/or other materials provided with the distribution.
  * Neither the name of Adobe Systems Incorporated nor the names of its
    contributors may be used to endorse or promote products derived from this
    software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

@ignore
*/package flexlib.scheduling.scheduleClasses.viewers
{
	import flexlib.scheduling.scheduleClasses.layout.LayoutUpdateEvent;
	import flexlib.scheduling.scheduleClasses.layout.IVerticalLinesLayout;
	import flexlib.scheduling.scheduleClasses.layout.VerticalLinesLayoutItem;
	import flexlib.scheduling.scheduleClasses.lineRenderer.DottedVerticalLineRenderer;
	import flexlib.scheduling.scheduleClasses.lineRenderer.ILineRenderer;
	import flexlib.scheduling.scheduleClasses.lineRenderer.LineRenderer;

	import mx.core.UIComponent;	
	
	/**
	 * @private
	 */
	public class VerticalLinesViewer extends UIComponent implements IVerticalLinesViewer
	{
		private var layout : IVerticalLinesLayout;		
		
		private var _dottedGridLines : Boolean;
		private var _verticalGridLineThickness : Number;
		private var _verticalGridLineColor : uint;
		private var _verticalGridLineAlpha : Number;
				
		public function get dottedGridLines() : Boolean
		{
		    return _dottedGridLines;
		}
		
		public function set dottedGridLines( value : Boolean ) : void
		{
			_dottedGridLines = value;
		}
		
		public function get verticalGridLineThickness() : Number
		{
		    return _verticalGridLineThickness;
		}
		
		public function set verticalGridLineThickness( value : Number ) : void
		{
			_verticalGridLineThickness = value;
		}
		
		public function get verticalGridLineColor() : uint
		{
		    return _verticalGridLineColor;
		}
		
		public function set verticalGridLineColor( value : uint ) : void
		{
			_verticalGridLineColor = value;
		}	
		
		public function get verticalGridLineAlpha() : Number
		{
		    return _verticalGridLineAlpha;
		}
		
		public function set verticalGridLineAlpha( value : Number ) : void
		{
			_verticalGridLineAlpha = value;
		}
		
		//---------------------------------------------		
		
		public function update( event : LayoutUpdateEvent ) : void 
		{
			layout = IVerticalLinesLayout( event.layout );
			invalidateDisplayList();
		}
		
		protected override function updateDisplayList( unscaledWidth : Number, unscaledHeight : Number ) : void
		{
			super.updateDisplayList( unscaledWidth , unscaledHeight );
			if( layout == null ) return;
			graphics.clear();
			render( layout );	
		}
		
		protected function render( layout : IVerticalLinesLayout ) : void 
		{
			var lineRenderer : ILineRenderer = getLineRendererForStyling();
			
			for each( var item : VerticalLinesLayoutItem in layout.items )
			{
				drawLineForItem( item, lineRenderer );
			}
		}
		
		protected function getLineRendererForStyling() : ILineRenderer
		{
			var lineRenderer : ILineRenderer;
			if( dottedGridLines )
			{
				lineRenderer = new DottedVerticalLineRenderer();
			}
			else
			{
				lineRenderer = new LineRenderer();
			}
			lineRenderer.weight = verticalGridLineThickness;
			lineRenderer.color = verticalGridLineColor;
			lineRenderer.alpha = verticalGridLineAlpha;
			return lineRenderer;
		}
		
		protected function drawLineForItem( item : VerticalLinesLayoutItem, lineRenderer : ILineRenderer ) : void
		{
			var x : Number = item.x - layout.xPosition;
			lineRenderer.moveTo( graphics, x, 0 );
			lineRenderer.apply( graphics );
			lineRenderer.drawTo( graphics, x, item.height );
		}			
	}
}