Writing String into a image in java

Question

I am trying to write a string into a image using ImageIo. But while writing a large string ,full string is not written into that image.

Here's my code:

File url=new File(imgUrl);

BufferedImage image = ImageIO.read(url);

Graphics g = image.getGraphics();
g.setPaintMode();
g.setFont(g.getFont().deriveFont(30f));
g.drawString(text, 100, 100);
g.dispose();

This code works fine for small strings.but when the width of the string exceeds the width of the image,then full string is not displayed on that image.

Any suggestions?

"this code works fine for small strings.but when the width of the string exceeds the width of the image,then full string is not displayed on that image" - that's obvious. What is your question? What's your expected behavior? — Adam Dyga
– Adam Dyga, Commented Feb 4, 2013 at 11:49

Panos Bariamis · Accepted Answer · 2013-02-04 11:50:44Z

i have an old method try it

public BufferedImage stringToImage(String text, Font font, Color bgColor, Color fgColor) {
    BufferedImage image = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = (Graphics2D) image.getGraphics();
    g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
    g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    FontRenderContext fc = g2d.getFontRenderContext();
    Rectangle2D bounds = font.getStringBounds(text, fc);

    //calculate the size of the text
    int width = (int) bounds.getWidth();
    int height = (int) bounds.getHeight();

    image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    g2d = (Graphics2D) image.getGraphics();
    g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
    g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setFont(font);

    g2d.setColor(bgColor);
    g2d.fillRect(0, 0, width, height);
    g2d.setColor(fgColor);
    g2d.drawString(text, 0, (int)-bounds.getY());
    g2d.dispose();

    return image;
}

and use

BufferedImage image = stringToImage(text, font, bgColor, fgColor);
ImageIO.write(image, "jpg", file);

Joop Eggen · Accepted Answer · 2013-02-04 11:54:15Z

1

Not tested, but it could be done as this:

JLabel label = new JLabel("<html><h2>Title</h2><p>large text ...</p>");
int w = image.getWidth();
int h = image.getHeigth();
label.setBounds(0, 0, w, h);
SwingUtilities.paintComponent(g, label, null, 0, 0, w, h);

answered Feb 4, 2013 at 11:54

Joop Eggen

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Community · Accepted Answer · 2017-05-23 10:32:00Z

0

There are many ways to acheive this.

FontRenderContext/GlyphVector as mentioned by pbaris. See this answer for an e.g.
FontMetrics as seen in this answer.
A JLabel (possibly multi-line) to contain and size the text. As mentioned by Joop E.G. LabelRenderTest

edited May 23, 2017 at 10:32

CommunityBot

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answered Feb 4, 2013 at 12:05

Andrew Thompson

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Mikhail Vladimirov · Accepted Answer · 2013-02-04 12:08:17Z

0

You can use JTextArea to layout text:

JTextArea textArea = new JTextArea(text);
textArea.setFont(g.getFont().deriveFont(30f));
textArea.setOpaque(false);
textArea.setWrapStyleWord(true);
textArea.setLineWrap(true);
textArea.setBounds(0, 0, image.getWidth(), image.getHeight());
textArea.paint(g);

answered Feb 4, 2013 at 12:08

Mikhail Vladimirov

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