Example usage for java.awt.font LineBreakMeasurer getPosition

Introduction

In this page you can find the example usage for java.awt.font LineBreakMeasurer getPosition.

Prototype

public int getPosition() 

Source Link

Document

Returns the current position of this LineBreakMeasurer .

Usage

From source file:Main.java

/**
 * Returns the {@link Dimension} for the given {@link JTextComponent}
 * subclass that will show the whole word wrapped text in the given width.
 * It won't work for styled text of varied size or style, it's assumed that
 * the whole text is rendered with the {@link JTextComponent}s font.
 *
 * @param textComponent the {@link JTextComponent} to calculate the {@link Dimension} for
 * @param width the width of the resulting {@link Dimension}
 * @param text the {@link String} which should be word wrapped
 * @return The calculated {@link Dimension}
 *///from w  w  w .  ja v  a2s.  co m
public static Dimension getWordWrappedTextDimension(JTextComponent textComponent, int width, String text) {
    if (textComponent == null) {
        throw new IllegalArgumentException("textComponent cannot be null");
    }
    if (width < 1) {
        throw new IllegalArgumentException("width must be 1 or greater");
    }
    if (text == null) {
        text = textComponent.getText();
    }
    if (text.isEmpty()) {
        return new Dimension(width, 0);
    }

    FontMetrics metrics = textComponent.getFontMetrics(textComponent.getFont());
    FontRenderContext rendererContext = metrics.getFontRenderContext();
    float formatWidth = width - textComponent.getInsets().left - textComponent.getInsets().right;

    int lines = 0;
    String[] paragraphs = text.split("\n");
    for (String paragraph : paragraphs) {
        if (paragraph.isEmpty()) {
            lines++;
        } else {
            AttributedString attributedText = new AttributedString(paragraph);
            attributedText.addAttribute(TextAttribute.FONT, textComponent.getFont());
            AttributedCharacterIterator charIterator = attributedText.getIterator();
            LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(charIterator, rendererContext);

            lineMeasurer.setPosition(charIterator.getBeginIndex());
            while (lineMeasurer.getPosition() < charIterator.getEndIndex()) {
                lineMeasurer.nextLayout(formatWidth);
                lines++;
            }
        }
    }

    return new Dimension(width,
            metrics.getHeight() * lines + textComponent.getInsets().top + textComponent.getInsets().bottom);
}

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From source file:Utils.java

/** 
 * Renders a paragraph of text (line breaks ignored) to an image (created and returned). 
 *
 * @param font The font to use//from  w ww . j  av  a2s . co  m
 * @param textColor The color of the text
 * @param text The message
 * @param width The width the text should be limited to
 * @return An image with the text rendered into it
 */
public static BufferedImage renderTextToImage(Font font, Color textColor, String text, int width) {
    Hashtable map = new Hashtable();
    map.put(TextAttribute.FONT, font);
    AttributedString attributedString = new AttributedString(text, map);
    AttributedCharacterIterator paragraph = attributedString.getIterator();

    FontRenderContext frc = new FontRenderContext(null, false, false);
    int paragraphStart = paragraph.getBeginIndex();
    int paragraphEnd = paragraph.getEndIndex();
    LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(paragraph, frc);

    float drawPosY = 0;

    //First time around, just determine the height
    while (lineMeasurer.getPosition() < paragraphEnd) {
        TextLayout layout = lineMeasurer.nextLayout(width);

        // Move it down
        drawPosY += layout.getAscent() + layout.getDescent() + layout.getLeading();
    }

    BufferedImage image = createCompatibleImage(width, (int) drawPosY);
    Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

    drawPosY = 0;
    lineMeasurer.setPosition(paragraphStart);
    while (lineMeasurer.getPosition() < paragraphEnd) {
        TextLayout layout = lineMeasurer.nextLayout(width);

        // Move y-coordinate by the ascent of the layout.
        drawPosY += layout.getAscent();

        /* Compute pen x position.  If the paragraph is
           right-to-left, we want to align the TextLayouts
           to the right edge of the panel.
         */
        float drawPosX;
        if (layout.isLeftToRight()) {
            drawPosX = 0;
        } else {
            drawPosX = width - layout.getAdvance();
        }

        // Draw the TextLayout at (drawPosX, drawPosY).
        layout.draw(graphics, drawPosX, drawPosY);

        // Move y-coordinate in preparation for next layout.
        drawPosY += layout.getDescent() + layout.getLeading();
    }

    graphics.dispose();
    return image;
}

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From source file:Main.java

public void paint(Graphics g) {
    String input = "this is a test.this is a test.this is a test.this is a test.";

    AttributedString attributedString = new AttributedString(input);
    attributedString.addAttribute(TextAttribute.FONT, (Font) UIManager.get("Label.font"));
    Color color = (Color) UIManager.get("Label.foreground");

    attributedString.addAttribute(TextAttribute.FOREGROUND, color);

    super.paint(g);
    Graphics2D g2d = (Graphics2D) g;

    int width = getSize().width;
    int x = 10;// w  w  w.j  a  v  a  2s. co m
    int y = 30;

    AttributedCharacterIterator characterIterator = attributedString.getIterator();
    FontRenderContext fontRenderContext = g2d.getFontRenderContext();
    LineBreakMeasurer measurer = new LineBreakMeasurer(characterIterator, fontRenderContext);
    while (measurer.getPosition() < characterIterator.getEndIndex()) {
        TextLayout textLayout = measurer.nextLayout(width);
        y += textLayout.getAscent();
        textLayout.draw(g2d, x, y);
        y += textLayout.getDescent() + textLayout.getLeading();
    }
}

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From source file:Main.java

License:asdf

void drawParagraph(Graphics2D g, String paragraph, float width) {
    LineBreakMeasurer linebreaker = new LineBreakMeasurer(new AttributedString(paragraph).getIterator(),
            g.getFontRenderContext());//from w  w  w .j  a v a 2s  .  c o  m

    int y = 0;
    while (linebreaker.getPosition() < paragraph.length()) {
        TextLayout textLayout = linebreaker.nextLayout(width);

        y += textLayout.getAscent();
        textLayout.draw(g, 0, y);
        y += textLayout.getDescent() + textLayout.getLeading();
    }
}

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From source file:BasicShapes.java

License:asdf

void drawParagraph(Graphics2D g, String paragraph, float width) {
    LineBreakMeasurer linebreaker = new LineBreakMeasurer(new AttributedString(paragraph).getIterator(),
            g.getFontRenderContext());/*from   w  ww .j a  v  a 2 s .  com*/

    float y = 0.0f;
    while (linebreaker.getPosition() < paragraph.length()) {
        TextLayout tl = linebreaker.nextLayout(width);

        y += tl.getAscent();
        tl.draw(g, 0, y);
        y += tl.getDescent() + tl.getLeading();
    }
}

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From source file:LineBreakMeasurerDemo.java

public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D) g;
    attribCharIterator = attribString.getIterator();
    FontRenderContext frc = new FontRenderContext(null, false, false);
    LineBreakMeasurer lbm = new LineBreakMeasurer(attribCharIterator, frc);
    int x = 10, y = 20;
    int w = getWidth();
    float wrappingWidth = w - 15;

    while (lbm.getPosition() < text.length()) {
        TextLayout layout = lbm.nextLayout(wrappingWidth);
        y += layout.getAscent();/* ww  w  .  j a v a 2 s .c o m*/
        layout.draw(g2, x, y);
        y += layout.getDescent() + layout.getLeading();
    }
}

---

From source file:MainClass.java

private void getLayouts(Graphics g) {
    layouts = new ArrayList();

    Graphics2D g2d = (Graphics2D) g;
    FontRenderContext frc = g2d.getFontRenderContext();

    AttributedString attrStr = new AttributedString(text);
    attrStr.addAttribute(TextAttribute.FONT, font, 0, text.length());
    LineBreakMeasurer measurer = new LineBreakMeasurer(attrStr.getIterator(), frc);
    float wrappingWidth;

    wrappingWidth = getSize().width - 15;

    while (measurer.getPosition() < text.length()) {
        TextLayout layout = measurer.nextLayout(wrappingWidth);
        layouts.add(layout);//from  w  ww .j av  a  2  s . co  m
    }
}

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From source file:Main.java

public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D) g;

    attribCharIterator = attribString.getIterator();

    FontRenderContext frc = new FontRenderContext(null, false, false);
    LineBreakMeasurer lbm = new LineBreakMeasurer(attribCharIterator, frc);

    int x = 10, y = 20;
    int w = getWidth();

    float wrappingWidth = w - 15;

    while (lbm.getPosition() < text.length()) {
        TextLayout layout = lbm.nextLayout(wrappingWidth);
        y += layout.getAscent();/*from w  ww.  j  ava 2s .c  o m*/
        layout.draw(g2, x, y);
        y += layout.getDescent() + layout.getLeading();
    }
}

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From source file:ParagraphLayout.java

public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;

    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    String s = "Java components and products Directory for Java components "
            + "and applications.Hundreds of Java components and applications "
            + "are organized by topic. You can find what you need easily. "
            + "You may also compare your product with others. If your component "
            + "is not listed, just send your url to java2s@java2s.com. " + "http://www.java2s.com";
    Font font = new Font("Serif", Font.PLAIN, 24);
    AttributedString as = new AttributedString(s);
    as.addAttribute(TextAttribute.FONT, font);
    AttributedCharacterIterator aci = as.getIterator();

    FontRenderContext frc = g2.getFontRenderContext();
    LineBreakMeasurer lbm = new LineBreakMeasurer(aci, frc);
    Insets insets = getInsets();// ww  w .ja v a2 s  . c  o  m
    float wrappingWidth = getSize().width - insets.left - insets.right;
    float x = insets.left;
    float y = insets.top;

    while (lbm.getPosition() < aci.getEndIndex()) {
        TextLayout textLayout = lbm.nextLayout(wrappingWidth);
        y += textLayout.getAscent();
        textLayout.draw(g2, x, y);
        y += textLayout.getDescent() + textLayout.getLeading();
        x = insets.left;
    }
}

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From source file:TextFormat.java

/**
 * Lazy evaluation of the List of TextLayout objects corresponding to this
 * MText. Some things are approximations!
 *///from ww w. j  a  v  a2s  . c  o  m
private void getLayouts(Graphics g) {
    layouts = new ArrayList();

    Point pen = new Point(10, 20);
    Graphics2D g2d = (Graphics2D) g;
    FontRenderContext frc = g2d.getFontRenderContext();

    AttributedString attrStr = new AttributedString(text);
    attrStr.addAttribute(TextAttribute.FONT, font, 0, text.length());
    LineBreakMeasurer measurer = new LineBreakMeasurer(attrStr.getIterator(), frc);
    float wrappingWidth;

    wrappingWidth = getSize().width - 15;

    while (measurer.getPosition() < text.length()) {
        TextLayout layout = measurer.nextLayout(wrappingWidth);
        layouts.add(layout);
    }
}

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