annotate java/src/uk/ac/qmul/eecs/ccmi/simpletemplate/MultiLineString.java @ 8:ea7885bd9bff tip

fixed bug : render solid line as dotted/dashed when moving the stylus from dotted/dashed to solid

/*  
 CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
	  
 Copyright (C) 2002 Cay S. Horstmann (http://horstmann.com)
 Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package uk.ac.qmul.eecs.ccmi.simpletemplate;

import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.util.Arrays;
import java.util.List;
import java.util.Set;

import javax.swing.JLabel;

import uk.ac.qmul.eecs.ccmi.diagrammodel.NodeProperties.Modifiers;

/**
   A string that can extend over multiple lines.
*/
public class MultiLineString {
   /**
      Constructs an empty, centered, normal size multiline
      string.
   */
   public MultiLineString(){ 
      text = ""; 
      arrayText = null;
      justification = CENTER;
      size = NORMAL;
      isSingleLine = true;
   }
   /**
      Sets the value of the text property.
      @param newValue the text of the multiline string
   */
   public void setText(String newValue){
	   setText(newValue,null);
   }
   
   public void setText(String newValue, ModifierView[] modifierViews) {
	   isSingleLine = true;
	   text = newValue; 
	   this.modifierViews = modifierViews;
	   format(); 
   }
   
   public void setText(String[] newValue, Modifiers modifiers){
	   isSingleLine = false;
	   this.modifiers = modifiers;
	   arrayText = newValue;
	   format();
   }
   
   public void setBold(boolean bold){
	   isBold = bold;
	   format();
   }
   /**
      Gets the value of the text property.
      @return the text of the multiline string
    */
   public String getText() { 
	   if(isSingleLine)
		   return text;
	   else{
		   StringBuilder builder = new StringBuilder("");
		   for(int i=0; i<arrayText.length; i++){
			   builder.append(arrayText[i]);
			   builder.append('\n');
		   }
		   return builder.toString();
	   }
   }
   /**
      Sets the value of the justification property.
      @param newValue the justification, one of LEFT, CENTER, 
      RIGHT
   */
   public void setJustification(int newValue) { justification = newValue; format(); }
   /**
      Gets the value of the justification property.
      @return the justification, one of LEFT, CENTER, 
      RIGHT
   */
   public int getJustification() { return justification; }
   /**
      Sets the value of the size property.
      @param newValue the size, one of SMALL, NORMAL, LARGE
   */
   public void setSize(int newValue) { size = newValue; format(); }
   /**
      Gets the value of the size property.
      @return the size, one of SMALL, NORMAL, LARGE
   */
   public int getSize() { return size; }
   
   @Override
   public String toString(){
	   if(isSingleLine)
		   return text.replace('\n', '|');
	   else 
		   return getText().replace('\n', '|');
   }

   private void format(){
      StringBuffer prefix = new StringBuffer();
      StringBuffer suffix = new StringBuffer();
      StringBuffer htmlText = new StringBuffer();
      prefix.append("&nbsp;");
      suffix.insert(0, "&nbsp;");
      if (size == LARGE){
         prefix.append("<font size=\"+1\">");
         suffix.insert(0, "</font>");
      }
      if (size == SMALL){
         prefix.append("<font size=\"-1\">");
         suffix.insert(0, "</font>");
      }
      
      htmlText.append("<html>");
      if(isSingleLine){
    	  if(isBold)
    		  prefix.append("<b>");
    	  htmlText.append(prefix);
    	  
    	  String formattedText = text;
    	  if(modifierViews != null){
	    	  for(ModifierView view : modifierViews){
	    		  formattedText = formatFromView(formattedText,view);
	    	  }
    	  }
    	  htmlText.append(formattedText);
    	  
    	  if(isBold)
    		  suffix.insert(0, "</b>");
    	  htmlText.append(suffix);
      }else{ // multi line
    	  boolean first = true;
    	  for(int i=0; i<arrayText.length; i++){
    		  if (first) 
    			  first = false; 
    		  else 
    			  htmlText.append("<br>");
    		  htmlText.append(prefix);
    		  String textLine = arrayText[i];
    		  Set<Integer> indexes = modifiers.getIndexes(i);
    		  for(Integer I : indexes){
    			  ModifierView view = (ModifierView)modifiers.getView(modifiers.getTypes().get(I));
    			  textLine = formatFromView(textLine, view);
    		  }
    		  htmlText.append(textLine);
    		  htmlText.append(suffix);
    	  }
      }
      htmlText.append("</html>");

      // replace any < that are not followed by {u, i, b, tt, font, br} with &lt;      
      List<String> dontReplace = Arrays.asList(new String[] { "u", "i", "b", "tt", "font", "br" });
      
      int ltpos = 0;
      while (ltpos != -1){
         ltpos = htmlText.indexOf("<", ltpos + 1);
         if (ltpos != -1 && !(ltpos + 1 < htmlText.length() && htmlText.charAt(ltpos + 1) == '/')){
            int end = ltpos + 1;
            while (end < htmlText.length() && Character.isLetter(htmlText.charAt(end))) end++;
            if (!dontReplace.contains(htmlText.substring(ltpos + 1, end)))
               htmlText.replace(ltpos, ltpos+1, "&lt;");
         }
      }
            
      label.setText(htmlText.toString());
      if (justification == LEFT) label.setHorizontalAlignment(JLabel.LEFT);
      else if (justification == CENTER) label.setHorizontalAlignment(JLabel.CENTER);
      else if (justification == RIGHT) label.setHorizontalAlignment(JLabel.RIGHT);
   }
   
   private String formatFromView(String text, ModifierView view){
	   if(view == null)
		   return text;
	   
	   StringBuilder prefix = new StringBuilder("");
	   StringBuilder suffix = new StringBuilder("");
	   
	   prefix.append(view.getPrefix());
	   suffix.append(view.getSuffix());
	   
	   if(view.isBold()){
		   prefix.insert(0,"<b>");
		   suffix.append("</b>");
	   }
	   
	   if(view.isItalic()){
			   prefix.insert(0,"<i>");
			   suffix.append("</i>");
	   }
	   
	   if(view.isUnderline()){
		   prefix.insert(0,"<u>");
		   suffix.append("</u>");
	   }
	   return prefix.append(text).append(suffix).toString();
   }
   
    /**
      Gets the bounding rectangle for this multiline string.
      @return the bounding rectangle (with top left corner (0,0))
   */
   public Rectangle2D getBounds(){
	  if(isSingleLine){ 
		  if (text.length() == 0) 
			  return new Rectangle2D.Double();
	  }else {
		  if(arrayText.length == 0)
			  return new Rectangle2D.Double();
	  }
      Dimension dim = label.getPreferredSize();       
      return new Rectangle2D.Double(0, 0, dim.getWidth(), dim.getHeight());
   }

   /**
      Draws this multiline string inside a given rectangle
      @param g2 the graphics context
      @param r the rectangle into which to place this multiline string
   */
   public void draw(Graphics2D g2, Rectangle2D r){
      label.setFont(g2.getFont());
      label.setBounds(0, 0, (int) r.getWidth(), (int) r.getHeight());
      g2.translate(r.getX(), r.getY());
      label.paint(g2);
      g2.translate(-r.getX(), -r.getY());        
   }

   public static final int LEFT = 0;
   public static final int CENTER = 1;
   public static final int RIGHT = 2;
   public static final int LARGE = 3;
   public static final int NORMAL = 4;
   public static final int SMALL = 5;

   private String text;
   private String[] arrayText;
   private Modifiers modifiers;
   private ModifierView[] modifierViews;
   private int justification;
   private int size;
   private boolean isBold;
   private transient JLabel label = new JLabel();
   private boolean isSingleLine;
}