Bug 193886 NPE is thrown when preview external CSS style in ppt[1205]
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/PPTRender.java
/ 2
										- innerBorderWidth
										/ 2 ),
								layoutPointY2PPT( bi.endY
										- 3
										* borders[BorderInfo.BOTTOM_BORDER].borderWidth
										/ 4 ),
								pptMeasure( innerBorderWidth ),
								bi.borderColor,
								"solid" ); 
						break;
				}
			}
		}
	}
	/**
	 * Draws a chunk of text on the PPT.
	 * 
	 * @param text
	 *            the textArea to be drawed.
	 * @param textX
	 *            the X position of the textArea relative to current page.
	 * @param textY
	 *            the Y position of the textArea relative to current page.
	 * @param contentByte
	 *            the content byte to draw the text.
	 * @param contentByteHeight
	 *            the height of the content byte.
	 */
	protected void drawTextAt( ITextArea text, int textX, int textY )