elementfactory.java

iText是一个能够快速产生PDF文件的java类库。iText的java类对于那些要产生包含文本

		return cell;
	}
	
	/**
	 * Creates an Table object based on a list of properties.
	 * @param attributes
	 * @return a Table
	 */
	public static Table getTable(Properties attributes) {
		String value;
		Table table;
		try {

			value = attributes.getProperty(ElementTags.WIDTHS);
			if (value != null) {
				StringTokenizer widthTokens = new StringTokenizer(value, ";");
				ArrayList values = new ArrayList();
				while (widthTokens.hasMoreTokens()) {
					values.add(widthTokens.nextToken());
				}
				table = new Table(values.size());
		        float[] widths = new float[table.getColumns()];
				for (int i = 0; i < values.size(); i++) {
					value = (String)values.get(i);
					widths[i] = Float.parseFloat(value + "f");
				}
				table.setWidths(widths);
			}
			else {
				value = attributes.getProperty(ElementTags.COLUMNS);
				try {
					table = new Table(Integer.parseInt(value));
				}
				catch(Exception e) {
					table = new Table(1);
				}
			}
			
	        table.setBorder(Table.BOX);
	        table.setBorderWidth(1);
	        table.getDefaultLayout().setBorder(Table.BOX);
	        
	        value = attributes.getProperty(ElementTags.LASTHEADERROW);
	        if (value != null) {
	            table.setLastHeaderRow(Integer.parseInt(value));
	        }
	        value = attributes.getProperty(ElementTags.ALIGN);
	        if (value != null) {
	            table.setAlignment(value);
	        }
	        value = attributes.getProperty(ElementTags.CELLSPACING);
	        if (value != null) {
	            table.setSpacing(Float.parseFloat(value + "f"));
	        }
	        value = attributes.getProperty(ElementTags.CELLPADDING);
	        if (value != null) {
	            table.setPadding(Float.parseFloat(value + "f"));
	        }
	        value = attributes.getProperty(ElementTags.OFFSET);
	        if (value != null) {
	            table.setOffset(Float.parseFloat(value + "f"));
	        }
	        value = attributes.getProperty(ElementTags.WIDTH);
	        if (value != null) {
	            if (value.endsWith("%"))
	                table.setWidth(Float.parseFloat(value.substring(0, value.length() - 1) + "f"));
	            else {
	            	table.setWidth(Float.parseFloat(value + "f"));
	            	table.setLocked(true);
	            }
	        }
	        table.setTableFitsPage(Utilities.checkTrueOrFalse(attributes, ElementTags.TABLEFITSPAGE));
	        table.setCellsFitPage(Utilities.checkTrueOrFalse(attributes, ElementTags.CELLSFITPAGE));
	        table.setConvert2pdfptable(Utilities.checkTrueOrFalse(attributes, ElementTags.CONVERT2PDFP));
	        
	        setRectangleProperties(table, attributes);
			return table;
		} catch (BadElementException e) {
			throw new ExceptionConverter(e);
		}
	}

	/**
	 * Sets some Rectangle properties (for a Cell, Table,...).
	 */
	private static void setRectangleProperties(Rectangle rect, Properties attributes) {
		String value;
		value = attributes.getProperty(ElementTags.BORDERWIDTH);
		if (value != null) {
			rect.setBorderWidth(Float.parseFloat(value + "f"));
		}
		int border = 0;
		if (Utilities.checkTrueOrFalse(attributes, ElementTags.LEFT)) {
			border |= Rectangle.LEFT;
		}
		if (Utilities.checkTrueOrFalse(attributes, ElementTags.RIGHT)) {
			border |= Rectangle.RIGHT;
		}
		if (Utilities.checkTrueOrFalse(attributes, ElementTags.TOP)) {
			border |= Rectangle.TOP;
		}
		if (Utilities.checkTrueOrFalse(attributes, ElementTags.BOTTOM)) {
			border |= Rectangle.BOTTOM;
		}
		rect.setBorder(border);
		
		String r = attributes.getProperty(ElementTags.RED);
		String g = attributes.getProperty(ElementTags.GREEN);
		String b = attributes.getProperty(ElementTags.BLUE);
		if (r != null || g != null || b != null) {
			int red = 0;
			int green = 0;
			int blue = 0;
			if (r != null) red = Integer.parseInt(r);
			if (g != null) green = Integer.parseInt(g);
			if (b != null) blue = Integer.parseInt(b);
			rect.setBorderColor(new Color(red, green, blue));
		}
		else {
			rect.setBorderColor(Markup.decodeColor(attributes.getProperty(ElementTags.BORDERCOLOR)));
		}
		r = (String)attributes.remove(ElementTags.BGRED);
		g = (String)attributes.remove(ElementTags.BGGREEN);
		b = (String)attributes.remove(ElementTags.BGBLUE);
		value = attributes.getProperty(ElementTags.BACKGROUNDCOLOR);
		if (r != null || g != null || b != null) {
			int red = 0;
			int green = 0;
			int blue = 0;
			if (r != null) red = Integer.parseInt(r);
			if (g != null) green = Integer.parseInt(g);
			if (b != null) blue = Integer.parseInt(b);
			rect.setBackgroundColor(new Color(red, green, blue));
		}
		else if (value != null) {
			rect.setBackgroundColor(Markup.decodeColor(value));
		}
		else {
			value = attributes.getProperty(ElementTags.GRAYFILL);
			if (value != null) {
				rect.setGrayFill(Float.parseFloat(value + "f"));
			}
		}
	}
	
	/**
	 * Creates a ChapterAutoNumber object based on a list of properties.
	 * @param attributes
	 * @return a Chapter
	 */
	public static ChapterAutoNumber getChapter(Properties attributes) {
		ChapterAutoNumber chapter = new ChapterAutoNumber("");
		setSectionParameters(chapter, attributes);
		return chapter;
	}

	/**
	 * Creates a Section object based on a list of properties.
	 * @param attributes
	 * @return a Section
	 */
	public static Section getSection(Section parent, Properties attributes) {
		Section section = parent.addSection("");
		setSectionParameters(section, attributes);
		return section;
	}

	/**
	 * Helper method to create a Chapter/Section object.
	 * @param attributes
	 */
	private static void setSectionParameters(Section section, Properties attributes) {
		String value;
		value = attributes.getProperty(ElementTags.NUMBERDEPTH);
		if (value != null) {
			section.setNumberDepth(Integer.parseInt(value));
		}
		value = attributes.getProperty(ElementTags.INDENT);
		if (value != null) {
			section.setIndentation(Float.parseFloat(value + "f"));
		}
		value = attributes.getProperty(ElementTags.INDENTATIONLEFT);
		if (value != null) {
			section.setIndentationLeft(Float.parseFloat(value + "f"));
		}
		value = attributes.getProperty(ElementTags.INDENTATIONRIGHT);
		if (value != null) {
			section.setIndentationRight(Float.parseFloat(value + "f"));
		}
	}

	/**
	 * Creates an Image object based on a list of properties.
	 * @param attributes
	 * @return an Image
	 */
	public static Image getImage(Properties attributes)
			throws BadElementException, MalformedURLException, IOException {
		String value;
		
		value = attributes.getProperty(ElementTags.URL);
		if (value == null)
			throw new MalformedURLException("The URL of the image is missing.");
		Image image = Image.getInstance(value);
		
		value = attributes.getProperty(ElementTags.ALIGN);
		int align = 0;
		if (value != null) {
			if (ElementTags.ALIGN_LEFT.equalsIgnoreCase(value))
				align |= Image.LEFT;
			else if (ElementTags.ALIGN_RIGHT.equalsIgnoreCase(value))
				align |= Image.RIGHT;
			else if (ElementTags.ALIGN_MIDDLE.equalsIgnoreCase(value))
				align |= Image.MIDDLE;
		}
		if ("true".equalsIgnoreCase(attributes.getProperty(ElementTags.UNDERLYING)))
			align |= Image.UNDERLYING;
		if ("true".equalsIgnoreCase(attributes.getProperty(ElementTags.TEXTWRAP)))
			align |= Image.TEXTWRAP;
		image.setAlignment(align);
		
		value = attributes.getProperty(ElementTags.ALT);
		if (value != null) {
			image.setAlt(value);
		}
		
		String x = attributes.getProperty(ElementTags.ABSOLUTEX);
		String y = attributes.getProperty(ElementTags.ABSOLUTEY);
		if ((x != null)	&& (y != null)) {
			image.setAbsolutePosition(Float.parseFloat(x + "f"),
					Float.parseFloat(y + "f"));
		}
		value = attributes.getProperty(ElementTags.PLAINWIDTH);
		if (value != null) {
			image.scaleAbsoluteWidth(Float.parseFloat(value + "f"));
		}
		value = attributes.getProperty(ElementTags.PLAINHEIGHT);
		if (value != null) {
			image.scaleAbsoluteHeight(Float.parseFloat(value + "f"));
		}
		value = attributes.getProperty(ElementTags.ROTATION);
		if (value != null) {
			image.setRotation(Float.parseFloat(value + "f"));
		}
		return image;
	}

	/**
	 * Creates an Annotation object based on a list of properties.
	 * @param attributes
	 * @return an Annotation
	 */
	public static Annotation getAnnotation(Properties attributes) {
		float llx = 0, lly = 0, urx = 0, ury = 0;
		String value;
		
		value = attributes.getProperty(ElementTags.LLX);
		if (value != null) {
			llx = Float.parseFloat(value + "f");
		}
		value = attributes.getProperty(ElementTags.LLY);
		if (value != null) {
			lly = Float.parseFloat(value + "f");
		}
		value = attributes.getProperty(ElementTags.URX);
		if (value != null) {
			urx = Float.parseFloat(value + "f");
		}
		value = attributes.getProperty(ElementTags.URY);
		if (value != null) {
			ury = Float.parseFloat(value + "f");
		}
		
		String title = attributes.getProperty(ElementTags.TITLE);
		String text = attributes.getProperty(ElementTags.CONTENT);
		if (title != null || text != null) {
			return new Annotation(title, text, llx, lly, urx, ury);
		}
		value = attributes.getProperty(ElementTags.URL);
		if (value != null) {
			return new Annotation(llx, lly, urx, ury, value);
		}
		value = attributes.getProperty(ElementTags.NAMED);
		if (value != null) {
			return new Annotation(llx, lly, urx, ury, Integer.parseInt(value));
		}
		String file = attributes.getProperty(ElementTags.FILE);
		String destination = attributes.getProperty(ElementTags.DESTINATION);
		String page = (String) attributes.remove(ElementTags.PAGE);
		if (file != null) {
			if (destination != null) {
				return new Annotation(llx, lly, urx, ury, file, destination);
			}
			if (page != null) {
				return new Annotation(llx, lly, urx, ury, file, Integer.parseInt(page));
			}
		}
		if (title == null)
			title = "";
		if (text == null)
			text = "";
		return new Annotation(title, text, llx, lly, urx, ury);
	}
}