Example usage for java.awt.font TextLayout getLeading

Introduction

In this page you can find the example usage for java.awt.font TextLayout getLeading.

Prototype

public float getLeading() 

Source Link

Document

Returns the leading of the TextLayout .

Usage

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 . jav  a2 s  . c o  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:BasicShapes.java

License:asdf

void drawParagraph(Graphics2D g, String paragraph, float width) {
    LineBreakMeasurer linebreaker = new LineBreakMeasurer(new AttributedString(paragraph).getIterator(),
            g.getFontRenderContext());/*  ww  w.  ja  va  2 s.  c o  m*/

    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:Main.java

License:asdf

void drawParagraph(Graphics2D g, String paragraph, float width) {
    LineBreakMeasurer linebreaker = new LineBreakMeasurer(new AttributedString(paragraph).getIterator(),
            g.getFontRenderContext());/*from   www .j  a v a 2 s.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: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();//from   w  w w. j a  v  a2s  .  co m
        layout.draw(g2, x, y);
        y += layout.getDescent() + layout.getLeading();
    }
}

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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 w w . j  av a 2s .  c o  m
        layout.draw(g2, x, y);
        y += layout.getDescent() + layout.getLeading();
    }
}

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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;//from  w  w  w.j ava2 s.  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: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();//w ww.j ava 2 s  .com
    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:TextLayoutLineBreakerMeasurer.java

public void paint(Graphics g) {
    Graphics2D graphics2D = (Graphics2D) g;
    GraphicsEnvironment.getLocalGraphicsEnvironment();
    Font font = new Font("LucidaSans", Font.PLAIN, 14);
    AttributedString messageAS = new AttributedString(m);
    messageAS.addAttribute(TextAttribute.FONT, font);
    AttributedCharacterIterator messageIterator = messageAS.getIterator();
    FontRenderContext messageFRC = graphics2D.getFontRenderContext();
    LineBreakMeasurer messageLBM = new LineBreakMeasurer(messageIterator, messageFRC);

    Insets insets = getInsets();/*from  w w  w . j av  a  2 s.  c om*/
    float wrappingWidth = getSize().width - insets.left - insets.right;
    float x = insets.left;
    float y = insets.top;

    while (messageLBM.getPosition() < messageIterator.getEndIndex()) {
        TextLayout textLayout = messageLBM.nextLayout(wrappingWidth);
        y += textLayout.getAscent();
        textLayout.draw(graphics2D, x, y);
        y += textLayout.getDescent() + textLayout.getLeading();
        x = insets.left;
    }
}

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From source file:TextLayoutDemo.java

public void paint(Graphics g) {
    Graphics2D graphics2D = (Graphics2D) g;
    GraphicsEnvironment.getLocalGraphicsEnvironment();
    Font font = new Font("LucidaSans", Font.PLAIN, 14);
    AttributedString messageAS = new AttributedString(textMessage);
    messageAS.addAttribute(TextAttribute.FONT, font);
    AttributedCharacterIterator messageIterator = messageAS.getIterator();
    FontRenderContext messageFRC = graphics2D.getFontRenderContext();
    LineBreakMeasurer messageLBM = new LineBreakMeasurer(messageIterator, messageFRC);

    Insets insets = getInsets();/*from   w  ww  .j av a 2s .  co m*/
    float wrappingWidth = getSize().width - insets.left - insets.right;
    float x = insets.left;
    float y = insets.top;

    while (messageLBM.getPosition() < messageIterator.getEndIndex()) {
        TextLayout textLayout = messageLBM.nextLayout(wrappingWidth);
        y += textLayout.getAscent();
        textLayout.draw(graphics2D, x, y);
        y += textLayout.getDescent() + textLayout.getLeading();
        x = insets.left;
    }
}

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From source file:LineBreakSample.java

public void paintComponent(Graphics g) {

    super.paintComponent(g);
    setBackground(Color.white);/* w  w  w  .  ja  v  a2  s. c om*/

    Graphics2D graphics2D = (Graphics2D) g;

    // Set formatting width to width of Component.
    Dimension size = getSize();
    float formatWidth = (float) size.width;

    float drawPosY = 0;

    lineMeasurer.setPosition(paragraphStart);

    // Get lines from lineMeasurer until the entire
    // paragraph has been displayed.
    while (lineMeasurer.getPosition() < paragraphEnd) {

        // Retrieve next layout.
        TextLayout layout = lineMeasurer.nextLayout(formatWidth);
        // 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 = formatWidth - layout.getAdvance();
        }

        // Draw the TextLayout at (drawPosX, drawPosY).
        layout.draw(graphics2D, drawPosX, drawPosY);

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

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