Bug 148771 Bottom margin is invalid in PDF & HTML
Details: Bottom margin is invalid Step: 1.New a label. 2.New a data item. 3.New a label again. 4.Set bottom margin as -20 point Actual result: See the attach image
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/area/impl/AbstractArea.java
{
			style.setProperty(IStyle.STYLE_PADDING_LEFT, IStyle.NUMBER_0);
			style.setProperty(IStyle.STYLE_PADDING_RIGHT, IStyle.NUMBER_0);
			return width - totalBorderWidth ;
		}
		else
		{
			return width - totalPaddngWidth - totalBorderWidth ;
		}
	}
	/**
	 * get content height
	 * 
	 * @return
	 */
	public int getContentHeight( )
	{
		return height
				- PropertyUtil.getDimensionValue( style
						.getProperty( StyleConstants.STYLE_BORDER_TOP_WIDTH ) )
				- PropertyUtil
						.getDimensionValue( style
								.getProperty( StyleConstants.STYLE_BORDER_BOTTOM_WIDTH ) )
				- PropertyUtil.getDimensionValue( style
						.getProperty( StyleConstants.STYLE_PADDING_TOP ) )
				- PropertyUtil.getDimensionValue( style
						.getProperty( StyleConstants.STYLE_PADDING_BOTTOM ) );
	}
	/**
	 * get allocated width