Length of text in pixels?

hi, is there any function that gives you the length of a string in pixels? For example, an "i" is a lot smaller than a "m". I currently have a statement like this...
g.drawString(stringVariable,50-(stringVariable.length()*3),50)
that gives aproximately centered text... But if I were to type 10 "i"s then it would be way off to the left of 50,50 and if I typed 10 "m"s it would be way off to the right of 50,50, somebody please help on this.

Hm, I did a little looking up about fontMetrics, and I found my answer, thanks.

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Why does the text look pixelated

I am using Helvetica Neue and when I publish the site the text looks pixelated.

Best practice is to use a Web Font, if possible. If not, use a Web Safe Font and only as a last resort use a System Font (since it will be converted to an image). An image is slower to load in your browser, prevents site viewers from copy/pasting your text content, prevents using the browser's Find feature within the page, and prevents you from being able to apply hyperlinks on ranges of text. Muse does automatically generate "alt tags" for the image, so search engines will still be aware of the original text content.
If a System Font is used, it will only render well if the background of the text frame is 100% opaque. (It has a solid fill color. An 100% opaque gradients. Or it has a 100% opaque fill image.) This is due to the fact smoothing the edges of the type on an LCD display requires knowing the color of the pixels behind the text. If the text frame is transparent then the smoothing will be performed using an inferior approach that is color agnostic to avoid creating color artifacts on the edges of the type. (Note that bringing in a transparent image containing the type from some other source will have the same problem.)

Calculate string CPI (length of string in pixel)

Word-wrap position is at the moment done in SAP via length of string (count of letters) via function u201CRKD_WORD_WRAPu201D. But this is counting number of char, this give the problem that different font type and size give different word-wrap position ! -> We need to calculate if possible the word-wrap position via the relative length of text u2013 I tried to find some on SDN and Internet, the only thing I can find is some functionality in JAVA u2026
Can any one help me how to calculate the length of a string using font type and hight of font... as we use truetype font as arial the length of letter "i" is not the same as 'X' ...
Best regards Jørgen Jensen

My problem is not to do the wordwrap, my problem is to find the right position as the length of 'i' is not the same length of 'X'
example:
iiiiiiiiii (10)
XXXXXXXXXX(10)
must be something like this:
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii(wordwrap position 35)
XXXXXXXXXX(Wordwrap position 10)
I need a way to find the length of a charactor in a given font and size.
Best regards Jørgen Jensen

Getiing length of String in pixels.

I need to set up legth of combobox depending on length of strings in it. Can I get length of String in pixels?

You should use the getFontMetrics() method of the Graphics object used by the painting methods of the combo.
Then the stringWidth(String) method of the given font metrics should give you the needed width.
Just take care of the fact that the combo must be realized (set visible or packed) for this to work.

Max Character Length for Text Variables

Hi folks,
Quick question:
Does OPA have a max character length for text variables?
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Obviously common sense prevails here. The system is unlikely to perform very well if you start passing around MBs of data in text variables!

Pixel length of text in applet output useing drawString()

is thier a way to find the pixel length of a string of text when im going to output it useing drawString in a applet
to say i am going to "draw hello world" in a applet
i wish to use drawRect around it i know were it starts i want to know the length of the letters in pixel size
each one seems to differ so each letter has a unknown length i need to know the lenght of the combined letters of the string of text
or even each individual letter and i can write a algorithim to add um
this is a problem ive encoutered before never solved and now am encountering again.

The TextLayout class is also handy in this area.
/* <applet code="TextSizeTest" width="400" height="300"></applet>
* use: >appletviewer TextSizeTest.java
import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import javax.swing.*;
public class TextSizeTest extends JApplet
    public void init()
        getContentPane().setLayout(new BorderLayout());
        getContentPane().add(new TextSizePanel());
    public static void main(String[] args)
        JApplet applet = new TextSizeTest();
        JFrame f = new JFrame(applet.getClass().getName());
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(applet);
        f.setSize(400,300);
        f.setLocation(200,200);
        applet.init();
        applet.start();
        f.setVisible(true);
class TextSizePanel extends JPanel
    String text;
    Font font;
    public TextSizePanel()
        text = "A test string";
        font = new Font("lucida sans regular", Font.PLAIN, 24);
        setBackground(Color.white);
    protected void paintComponent(Graphics g)
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        int w = getWidth();
        int h = getHeight();
        g2.setFont(font);
        FontRenderContext frc = g2.getFontRenderContext();
        LineMetrics metrics = font.getLineMetrics(text, frc);
        float width = (float)font.getStringBounds(text, frc).getWidth();
        float ascent = metrics.getAscent();
        float descent = metrics.getDescent();
        float x = (w - width)/2;
        float y = (h + ascent)/2 - descent;
        g2.drawString(text, x, y);
        g2.setPaint(Color.red);
        g2.draw(new Rectangle2D.Double(x, y - ascent, width, ascent + descent));
}

Length of a string (text) in pixels.

I'm trying to locate a String's center on an exact position, drawing it to a JPanel. But since i don't know the exact length of the string, it's not that easy. Can anybody help me out there?

import java.awt.*;
import java.awt.event.*;
import java.awt.font.*;
import java.awt.geom.*;
import javax.swing.*;
public class CenteringStrings
    public static void main(String[] args)
        StringDemoPanel demo = new StringDemoPanel();
        DemoActionPanel action = new DemoActionPanel(demo);
        JFrame f = new JFrame("Centering Strings");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(action, "East");
        f.getContentPane().add(demo);
        f.setSize(500,300);
        f.setLocation(200,200);
        f.setVisible(true);
class StringDemoPanel extends JPanel
    String text;
    Font font;
    final int
        ASCENT   = 0,
        DESCENT = 1,
        LEADING = 2,
        BASELINE = 3;
    int index = -1;
    boolean sizeFlag, boundsFlag;
    public StringDemoPanel()
        text = "Centered text";
        font = new Font("lucida sans oblique", Font.PLAIN, 36);
        sizeFlag = false;
        boundsFlag = false;
        setBackground(Color.white);
    public void paintComponent(Graphics g)
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setFont(font);
        FontRenderContext frc = g2.getFontRenderContext();
        LineMetrics lm = font.getLineMetrics(text, frc);
        TextLayout tl = new TextLayout(text, font, frc);
        int w = getWidth();
        int h = getHeight();
        float textWidth = (float)font.getStringBounds(text, frc).getWidth();
        float ascent = lm.getAscent();
        float descent = lm.getDescent();
        float leading = lm.getLeading();
        float height = lm.getHeight();
        float x = (w - textWidth)/2;
        float y = (h + height)/2 - descent;
        g2.drawString(text, x, y);
        // marker for string origin (x,y) on baseline
        //g2.setPaint(Color.blue);
        //g2.fill(new Ellipse2D.Double(x - 1, y - 1, 2, 2));
        // physical space of text
        Rectangle2D textSize = tl.getBounds();
        textSize.setFrame(x, y - textSize.getHeight(),
                          textSize.getWidth(), textSize.getHeight());
        // string bounds
        Rectangle2D bounds = font.getStringBounds(text, frc);
        bounds.setFrame(x, y - ascent - leading, bounds.getWidth(), bounds.getHeight());
        switch(index)
            case ASCENT:
                Rectangle2D r1 = new Rectangle2D.Double(x, y - ascent, textWidth, ascent);
                g2.setPaint(Color.magenta);
                g2.draw(r1);
                break;
            case DESCENT:
                Rectangle2D r2 = new Rectangle2D.Double(x , y, textWidth, descent);
                g2.setPaint(Color.orange);
                g2.draw(r2);
                break;
            case LEADING:
                Rectangle2D r3 = new Rectangle2D.Double(x, y - ascent - leading,
                                                        textWidth, leading);
                g2.setPaint(Color.yellow);
                g2.draw(r3);
                break;
            case BASELINE:
                Line2D line = new Line2D.Double(x, y, x + textWidth, y);
                g2.setPaint(Color.blue);
                g2.draw(line);
        if(sizeFlag)
            g2.setPaint(Color.green);
            g2.draw(textSize);
            System.out.println("above size = " + (int)textSize.getY() + "\n" +
                               "below size = " +
                               (int)(h - (textSize.getY() + textSize.getHeight())));
        if(boundsFlag)
            g2.setPaint(Color.red);
            g2.draw(bounds);
            System.out.println("above bounds = " + (int)bounds.getY() + "\n" +
                               "below bounds = " +
                               (int)(h - (bounds.getY() + bounds.getHeight())));
    public void setIndex(int i)
        index = i;
        repaint();
    public void setSizeFlag(boolean flag)
        sizeFlag = flag;
        repaint();
    public void setBoundsFlag(boolean flag)
        boundsFlag = flag;
        repaint();
class DemoActionPanel extends JPanel
    StringDemoPanel sdp;
    JRadioButton
        ascentButton, descentButton, leadingButton, baselineButton, clearButton;
    JRadioButton[] buttons;
    JCheckBox
        sizeCheck, boundsCheck;
    JCheckBox[] checks;
    public DemoActionPanel(StringDemoPanel p)
        sdp = p;
        createComponents();
    private void createComponents()
        ascentButton   = new JRadioButton("ascent");
        descentButton = new JRadioButton("descent");
        leadingButton = new JRadioButton("leading");
        baselineButton = new JRadioButton("baseline");
        clearButton    = new JRadioButton("clear");
        buttons = new JRadioButton[] {
            ascentButton, descentButton, leadingButton, baselineButton, clearButton
        ButtonGroup group = new ButtonGroup();
        RadioButtonListener buttonListener = new RadioButtonListener();
        setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.weighty = 1.0;
        gbc.insets = new Insets(2,2,2,2);
        gbc.gridwidth = gbc.REMAINDER;
        gbc.anchor = gbc.WEST;
        for(int i = 0; i < buttons.length; i++)
            add(buttons, gbc);
group.add(buttons[i]);
buttons[i].addActionListener(buttonListener);
sizeCheck = new JCheckBox("text size");
boundsCheck = new JCheckBox("bounds");
checks = new JCheckBox[] { sizeCheck, boundsCheck };
CheckBoxListener checkBoxListener = new CheckBoxListener();
for(int i = 0; i < checks.length; i++)
add(checks[i], gbc);
checks[i].addActionListener(checkBoxListener);
private class RadioButtonListener implements ActionListener
public void actionPerformed(ActionEvent e)
JRadioButton button = (JRadioButton)e.getSource();
if(button == clearButton)
sdp.setIndex(-1);
return;
for(int i = 0; i < buttons.length; i++)
if(button == buttons[i])
sdp.setIndex(i);
break;
private class CheckBoxListener implements ActionListener
public void actionPerformed(ActionEvent e)
JCheckBox checkBox = (JCheckBox)e.getSource();
if(checkBox == sizeCheck)
sdp.setSizeFlag(sizeCheck.isSelected());
if(checkBox == boundsCheck)
sdp.setBoundsFlag(boundsCheck.isSelected());

Changing a variables length for text input in Captivate 6

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I've been driving myself a bit batty trying to think of a way around the 1 caption 1 variable limit...
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Hi all.
I am making a Message Dialog From JOptionPane because i do not want to use some static methods of JOptionPane (JOptionPane.Show ...)
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Edited by: ThuCT on Feb 1, 2010 3:28 AM

Add a dialog.pack() call. See SSCCE below.
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Message was edited by: skyjamvideos
Message was edited by: skyjamvideos

http://www.kenstone.net/fcphomepage/motion_text_in_fcpspencer.html

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Length of text in pixels?

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