Java Solutions: Style

Friday, May 30, 2014

Setting text styles, colors, font and alignment in JTextPane (2): html

You can also setting the styles, colors, font and other character of the text in JTextPane using html. Following is an example code.

import java.awt.Color;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;

public class HtmlTest extends JTextPane {

public static void main(String[] args){
//create the JTextPane and set the ContentType to text/html
HtmlTest test = new HtmlTest();
test.setContentType("text/html");
test.setBackground(Color.yellow);

String str = "Style Test Result "+
"the first line "+
"the second line ";

//get the HTMLEditorKit
HTMLDocument doc = (HTMLDocument)test.getDocument();
HTMLEditorKit editorKit = (HTMLEditorKit)test.getEditorKit();
try{
//insert the text using the HTMLEditorKit
editorKit.insertHTML(doc, doc.getLength(), str,0,0, null);
}catch(BadLocationException ble){
ble.printStackTrace(System.out);
} catch(IOException ioe){
ioe.printStackTrace(System.out);
}

JFrame f = new JFrame("Style Test");
f.setContentPane(new JScrollPane(test));
f.setSize(500, 300);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}

Previous <

References

1. Setting text styles, colors, font and alignment in JTextPane (1): attributes

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Thursday, May 29, 2014

Setting text styles, colors, font and alignment in JTextPane (1): attributes

JTextPane allows to set font, styles, foreground color, background color, and text alignment for each segment of the text, which is very difficult to do with JTextArea. Following is a sample code for setting some of this characters in JTextPane.

import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;

public class AttributeTest extends JTextPane {
SimpleAttributeSet attributeSet;

public AttributeTest() {
//create the SimpleAttributeSet
attributeSet = new SimpleAttributeSet();
}

public void addString(int fontSize,
Color foregroundColor,
Color backgroundColor,
boolean isBold,
boolean isItalic,
int alignment,
String str) {
//add the attributes to the SimpleAttributeSet
StyleConstants.setFontSize(attributeSet, fontSize);
StyleConstants.setForeground(attributeSet, foregroundColor);
StyleConstants.setBackground(attributeSet, backgroundColor);
StyleConstants.setBold(attributeSet, isBold);
StyleConstants.setItalic(attributeSet, isItalic);
StyleConstants.setAlignment(attributeSet, alignment);

//set the attribute to the StyledDocument
int len = this.getText().length();
StyledDocument sDoc = this.getStyledDocument();
sDoc.setCharacterAttributes(len, str.length(), attributeSet, false);

// Or using the following two lines of code to replace the above two lines of code
// this.setCaretPosition(len);
// this.setCharacterAttributes(attributeSet, false);

//insert the string to the JTextPane
this.replaceSelection(str);
}

public static void main(String[] args){
String[] strs = {"The Third Line\n",
"The Second Line\n",
"The First Line\n",
"Style Test Result\n"
};
AttributeTest test = new AttributeTest();
for (int i=0; i<strs.length; i++) {
if (i == 3){
test.addString(14, Color.blue, Color.LIGHT_GRAY, true, false, StyleConstants.ALIGN_CENTER, strs[i]);
} else if (i == 2){
test.addString(11, Color.red, Color.GREEN, false, true, StyleConstants.ALIGN_LEFT, strs[i]);
} else if (i == 1) {
test.addString(11, Color.orange, Color.LIGHT_GRAY, false, false, StyleConstants.ALIGN_LEFT, strs[i]);
} else {
test.addString(11, Color.black, Color.CYAN, false, false, StyleConstants.ALIGN_LEFT, strs[i]);
}
}
test.setBackground(Color.yellow);
JFrame f = new JFrame("Style Test");
f.setContentPane(new JScrollPane(test));
f.setSize(500, 300);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}

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References

1. Setting text styles, colors, font and alignment in JTextPane (2): html

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