stringelement.java

Java写的ERP系统

/******************************************************************************
 * The contents of this file are subject to the   Compiere License  Version 1.1
 * ("License"); You may not use this file except in compliance with the License
 * You may obtain a copy of the License at http://www.compiere.org/license.html
 * Software distributed under the License is distributed on an  "AS IS"  basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 * The Original Code is                  Compiere  ERP & CRM  Business Solution
 * The Initial Developer of the Original Code is Jorg Janke  and ComPiere, Inc.
 * Portions created by Jorg Janke are Copyright (C) 1999-2002 Jorg Janke, parts
 * created by ComPiere are Copyright (C) ComPiere, Inc.;   All Rights Reserved.
 * Contributor(s): ______________________________________.
 *****************************************************************************/
package org.compiere.print.layout;

import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.text.*;
import java.util.*;
import java.util.regex.*;

import org.compiere.print.*;
import org.compiere.util.*;
import org.compiere.model.*;

/**
 *	String Print ELement.
 *  The input can be multiple lines. The first tab is expabded.
 *
 * 	@author 	Jorg Janke
 * 	@version 	$Id: StringElement.java,v 1.20 2003/03/21 02:38:31 jjanke Exp $
 */
public class StringElement extends PrintElement
{
	/**
	 *	Standard Field Constructor.
	 *  Created in LayoutEngine
	 *  @param inText text
	 *  @param font font
	 *  @param paint paint
	 * 	@param ID optional ID (null if document)
	 *  @param translateText if true, check for optional text translation
	 */
	public StringElement (String inText, Font font, Paint paint, NamePair ID, boolean translateText)
	{
		Log.trace(Log.l6_Database, "StringElement", "Text=" + inText + ", ID=" + ID + ", Translate=" + translateText);
		if (translateText)
		{
			int count = Util.getCount(inText, '@');
			if (count > 0 && count % 2 == 0)
			{
				m_originalString = inText;
				m_originalFont = font;
				m_originalPaint = paint;
				//	Translate it to get rough space (not correct context) = may be too small
				inText = Msg.parseTranslation(Env.getCtx(), m_originalString);
			}
		}
		m_ID = ID;
		String[] lines = Pattern.compile("$", Pattern.MULTILINE).split(inText);
		m_string_paper = new AttributedString[lines.length];
		m_string_view = new AttributedString[lines.length];
		for (int i = 0; i < lines.length; i++)
		{
			String line = Util.removeCRLF (lines[i]);
			m_string_paper[i] = new AttributedString(line);
			if (line.length() == 0)
				continue;
			Log.trace(9, "Line " + i, line);
			m_string_paper[i].addAttribute(TextAttribute.FONT, font);
			m_string_paper[i].addAttribute(TextAttribute.FOREGROUND, paint);
			if (m_ID != null && i == 0)		//	first line only - create special Attributed String
			{
				m_string_view[i] = new AttributedString(line);
				m_string_view[i].addAttribute(TextAttribute.FONT, font);
				int endIndex = line.length();
				m_string_view[i].addAttribute(TextAttribute.FOREGROUND, LINK_COLOR);
				m_string_view[i].addAttribute(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_LOW_ONE_PIXEL, 0, endIndex);
			}
			else
				m_string_view[i] = m_string_paper[i];
		}
		//	Load Image
		waitForLoad(LayoutEngine.IMAGE_TRUE);
		waitForLoad(LayoutEngine.IMAGE_FALSE);
	}	//	StringElement

	/**
	 * 	Attributed String Constructor
	 * 	@param string attributed string
	 */
	public StringElement(AttributedString string)
	{
		m_string_paper = new AttributedString[] {string};
		m_string_view = m_string_paper;
	}	//	StringElement

	/**
	 *	Field Constructor.
	 *  Created in LayoutEngine
	 *  @param content text or boolean
	 *  @param font font
	 *  @param paint paint
	 * 	@param ID optional ID (null if document)
	 *  @param label optional label
	 * 	@param labelSuffix optional label suffix
	 */
	public StringElement (Object content, Font font, Paint paint, NamePair ID, String label, String labelSuffix)
	{
		Log.trace(Log.l6_Database, "StringElement", "Label=" + label + "|" + labelSuffix
			+ ", Content=" + content + ", ID=" + ID);
		int startIndex = 0;
		int endOffset = 0;

		StringBuffer text = new StringBuffer();
		if (label != null && label.length() > 0)
		{
			text.append(label).append(" ");
			startIndex = label.length() + 1;
		}
		if (content instanceof Boolean)
			m_check = (Boolean)content;
		else
			text.append(content);
		if (labelSuffix != null && labelSuffix.length() > 0)
		{
			text.append(labelSuffix);
			endOffset = labelSuffix.length();
		}
		m_ID = ID;
		String[] lines = Pattern.compile("$", Pattern.MULTILINE).split(text);
		m_string_paper = new AttributedString[lines.length];
		m_string_view = new AttributedString[lines.length];
		for (int i = 0; i < lines.length; i++)
		{
			String line = Util.removeCRLF (lines[i]);
			m_string_paper[i] = new AttributedString(line);
			if (line.length() == 0)
				continue;
			Log.trace(9, "Line " + i, line);
			m_string_paper[i].addAttribute(TextAttribute.FONT, font);
			m_string_paper[i].addAttribute(TextAttribute.FOREGROUND, paint);
			if (m_ID != null && i == 0)		//	first line only - create special Attributed String
			{
				m_string_view[i] = new AttributedString(line);
				m_string_view[i].addAttribute(TextAttribute.FONT, font);
				int endIndex = line.length() - endOffset;
				if (endIndex > startIndex)
				{
					m_string_view[i].addAttribute (TextAttribute.FOREGROUND, LINK_COLOR, startIndex, endIndex);
					m_string_view[i].addAttribute (TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_LOW_ONE_PIXEL, startIndex, endIndex);
				}
			}
			else
				m_string_view[i] = m_string_paper[i];
		}
	}	//	StringElement


	/**	Actual Elements						*/
	private AttributedString[]	m_string_view = null;
	private AttributedString[]	m_string_paper = null;
	/**	To be translated String				*/
	private String				m_originalString = null;
	private Font				m_originalFont = null;
	private Paint				m_originalPaint = null;
	/**	Optional ID of String				*/
	private NamePair			m_ID = null;
	/** Optional CheckBox					*/
	private Boolean				m_check = null;

	/**
	 * 	Get optional ID
	 * 	@return ID or null
	 */
	public NamePair getID()
	{
		return m_ID;
	}	//	getID

	/**
	 * 	Translate Context if required
	 *  If content is translated, the element needs to stay in the bounds
	 *  of the originally calculated size and need to align the field.
	 * 	@param ctx context
	 */
	public void translate(Properties ctx)
	{
		if (m_originalString == null)
			return;
		String inText = Msg.parseTranslation(ctx, m_originalString);
	//	Log.trace(Log.l6_Database, "StringElement.translate", inText);
		String[] lines = Pattern.compile("$", Pattern.MULTILINE).split(inText);
		m_string_paper = new AttributedString[lines.length];
		for (int i = 0; i < lines.length; i++)
		{
			String line = Util.removeCRLF (lines[i]);
			m_string_paper[i] = new AttributedString(line);
			if (line.length() > 0)
			{
				m_string_paper[i].addAttribute(TextAttribute.FONT, m_originalFont);
				m_string_paper[i].addAttribute(TextAttribute.FOREGROUND, m_originalPaint);
			}
		}
		m_string_view = m_string_paper;
	}	//	translate

	/*************************************************************************/

	/**
	 * 	Layout and Calculate Size.
	 * 	Set p_width & p_height
	 * 	@return Size
	 */
	protected boolean calculateSize()
	{
		if (p_sizeCalculated)
			return true;
		//
		FontRenderContext frc = new FontRenderContext(null, true, true);
		TextLayout layout = null;
		p_height = 0f;
		p_width = 0f;

		//	No Limit
		if (p_maxWidth == 0f && p_maxHeight == 0f)
		{
			for (int i = 0; i < m_string_paper.length; i++)
			{
				AttributedCharacterIterator iter = m_string_paper[i].getIterator();
				if (iter.getBeginIndex() == iter.getEndIndex())
					continue;

				//	Check for Tab (just first)
				int tabPos = -1;
				for (char c = iter.first(); c != iter.DONE && tabPos == -1; c = iter.next())
				{
					if (c == '\t')
						tabPos = iter.getIndex();
				}

				if (tabPos == -1)
				{
					layout = new TextLayout (iter, frc);
					p_height += layout.getAscent() + layout.getDescent() + layout.getLeading();
					if (p_width < layout.getAdvance())
						p_width = layout.getAdvance();
				}
				else	//	with tab
				{
					LineBreakMeasurer measurer = new LineBreakMeasurer(iter, frc);
					layout = measurer.nextLayout(9999, tabPos, false);
					p_height += layout.getAscent() + layout.getDescent() + layout.getLeading();
					float width = getTabPos (0, layout.getAdvance());
					layout = measurer.nextLayout(9999, iter.getEndIndex(), true);
					width += layout.getAdvance();
					if (p_width < width)
						p_width = width;
				}
			}	//	 for all strings

			//	Add CheckBox Size
			if (m_check != null)
			{
				p_width += LayoutEngine.IMAGE_SIZE.width;
				if (p_height < LayoutEngine.IMAGE_SIZE.height)
					p_height = LayoutEngine.IMAGE_SIZE.height;
			}
		}
		//	Size Limits
		else
		{
			p_width = p_maxWidth;
			for (int i = 0; i < m_string_paper.length; i++)