/**
* ===========================================
* LibLayout : a free Java layouting library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/liblayout/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: DocumentConverter.java 6653 2008-12-02 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.input.swing.converter;
import org.jfree.layouting.input.style.keys.page.PageSize;
import org.jfree.layouting.input.style.keys.page.PageStyleKeys;
import org.jfree.layouting.input.style.keys.box.BoxStyleKeys;
import org.jfree.layouting.input.style.values.CSSNumericValue;
import org.jfree.layouting.input.style.values.CSSNumericType;
import org.jfree.layouting.input.swing.Converter;
import org.jfree.layouting.input.swing.ConverterAttributeSet;
import org.pentaho.reporting.libraries.base.util.DebugLog;
import javax.swing.text.Element;
/**
* This class handles convertions of document properties to css style attributes.
*/
public class DocumentConverter implements Converter
{
public static final String PAGE_RULE_TYPE = "@page";
public static final String RTF_PAGEWIDTH = "paperw";
public static final String RTF_PAGEHEIGHT = "paperh";
public static final String RTF_MARGINLEFT = "margl";
public static final String RTF_MARGINRIGHT = "margr";
public static final String RTF_MARGINTOP = "margt";
public static final String RTF_MARGINBOTTOM = "margb";
// Binding Edge treatment @ CSS 3
// The binding edge is the edge of the page box that is towards the binding if the material is bound. The binding edge
// often has a larger margin than the opposite edge to provide for the space used by the binding. The binding edge
// can be any of the four edges. However, page sheets are customarily bound so that the binding edge of page boxes
// with portrait orientation is vertical. This module provides no method to specify the binding edge. In duplex
// printing, the binding edge is on opposite sides of the page box for the left and right pages.
/**
* The inner margin of a page (near the spine) of a book.
*/
public static final String RTF_GUTTERWIDTH = "gutter";
/**
* Page orientation in which the page width exceeds the page length. The opposit is portrait.
*/
public static final String RTF_LANDSCAPE = "landscape";
public DocumentConverter()
{
}
/**
* Converts a style key and a style value to a CSS compatible style key and style value.
* A conversion can result in more than one key and value.
*
* @param key The style key to convert.
* @param value The style value to convert.
* @param cssAttr The current converted CSS attributes for the current element.
* @param context The current Element.
* @return The conversion result or null if no converstion has been done.
*/
public ConverterAttributeSet convertToCSS(final Object key, final Object value, final ConverterAttributeSet cssAttr, final Element context)
{
if (key instanceof String)
{
return handleStringAttributes(key, value, cssAttr);
}
return null;
}
/**
* Handles the convertions of <code>String</code> key type.
*
* @param key The style key.
* @param value The style value.
* @param cssAttr The current converted CSS attributes.
* @return The conversion result or null if no converstion has been done.
*/
private ConverterAttributeSet handleStringAttributes(final Object key, final Object value, final ConverterAttributeSet cssAttr)
{
final ConverterAttributeSet attr = new ConverterAttributeSet();
final String styleKey = (String) key;
if (styleKey.equals(RTF_PAGEWIDTH) || styleKey.equals(RTF_PAGEHEIGHT))
{
final float floatValue = ((Float) value).floatValue();
final Object size = cssAttr.getAttribute(PageStyleKeys.SIZE.getName());
double width = 0;
double height = 0;
if(size instanceof PageSize)
{
final PageSize pageSize = (PageSize)size;
width = pageSize.getWidth();
height = pageSize.getHeight();
}
else if(RTF_LANDSCAPE.equals(size))
{
if (styleKey.equals(RTF_PAGEWIDTH))
{
height = twipToInt(floatValue);
}
else
{
width = twipToInt(floatValue);
}
}
else
{
if (styleKey.equals(RTF_PAGEWIDTH))
{
width = twipToInt(floatValue);
}
else
{
height = twipToInt(floatValue);
}
}
attr.addAttribute(PAGE_RULE_TYPE, PageStyleKeys.SIZE.getName(), new PageSize(width, height));
}
else if(styleKey.equals(RTF_MARGINLEFT))
{
final float floatValue = ((Float) value).floatValue();
attr.addAttribute(PAGE_RULE_TYPE, BoxStyleKeys.MARGIN_LEFT.getName(), CSSNumericValue.createValue(CSSNumericType.PT, floatValue));
}
else if(styleKey.equals(RTF_MARGINRIGHT))
{
final float floatValue = ((Float) value).floatValue();
attr.addAttribute(PAGE_RULE_TYPE, BoxStyleKeys.MARGIN_RIGHT.getName(), CSSNumericValue.createValue(CSSNumericType.PT, floatValue));
}
else if(styleKey.equals(RTF_MARGINTOP))
{
final float floatValue = ((Float) value).floatValue();
attr.addAttribute(PAGE_RULE_TYPE, BoxStyleKeys.MARGIN_TOP.getName(), CSSNumericValue.createValue(CSSNumericType.PT, floatValue));
}
else if(styleKey.equals(RTF_MARGINBOTTOM))
{
final float floatValue = ((Float) value).floatValue();
attr.addAttribute(PAGE_RULE_TYPE, BoxStyleKeys.MARGIN_BOTTOM.getName(), CSSNumericValue.createValue(CSSNumericType.PT, floatValue));
}
else if(styleKey.equals(RTF_LANDSCAPE))
{
final Object size = cssAttr.getAttribute(PageStyleKeys.SIZE.getName());
if(size instanceof PageSize)
{
final PageSize pageSize = (PageSize)size;
attr.addAttribute(PAGE_RULE_TYPE, PageStyleKeys.SIZE.getName(), new PageSize(pageSize.getHeight(), pageSize.getWidth()));
}
else
{
attr.addAttribute(PAGE_RULE_TYPE, PageStyleKeys.SIZE.getName(), RTF_LANDSCAPE);
}
}
else
{
DebugLog.log("Unkown type of document attribute: " + styleKey);
return null;
}
return attr;
}
/**
* Measurements in RTF are in twips. A twip is 1/20 point.
*
* @param twips The measurement in twips.
* @return The measurement in points.
*/
private float twipToInt(final float twips)
{
return twips * 20;
}
}