Example usage for java.awt FontMetrics charsWidth

Introduction

In this page you can find the example usage for java.awt FontMetrics charsWidth.

Prototype

public int charsWidth(char[] data, int off, int len) 

Source Link

Document

Returns the total advance width for showing the specified array of characters in this Font .

Usage

From source file:Main.java

public static void main(String args[]) {
    JFrame f = new JFrame("JColorChooser Sample");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    f.setSize(300, 200);/*  www .  j av a  2  s .co m*/
    f.setVisible(true);

    FontMetrics metrics = f.getFontMetrics(f.getFont());

    int widthX = metrics.charsWidth(new char[] { 'a', 'b' }, 1, 2);

    System.out.println(widthX);

}

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From source file:com.intel.stl.ui.common.view.ComponentFactory.java

/**
 * /*from www .j a va2s .  c om*/
 * <i>Description:</i> simple method that creates single/multi line label
 * with specified label width based on a source label. For more advanced
 * label attributes, it's the developer's responsibility to set them back.
 * 
 * @param source
 * @param wrap
 * @param maxWidth
 * @return
 */
public static JLabel deriveLabel(JLabel source, final boolean wrap, final int maxWidth) {
    JXLabel label = new JXLabel(source.getText(), source.getIcon(), source.getHorizontalAlignment()) {
        private static final long serialVersionUID = -4816144910055350011L;

        private Font cachedFont;

        private String chahedRawText, chahedText;

        /*
         * (non-Javadoc)
         * 
         * @see javax.swing.JLabel#getText()
         */
        @Override
        public String getText() {
            String text = super.getText();
            if (wrap || maxWidth <= 0 || text == null || text.isEmpty()) {
                return text;
            }

            if (getFont().equals(cachedFont) && text.equals(chahedRawText)) {
                return chahedText;
            }

            chahedRawText = text;
            cachedFont = getFont();
            FontMetrics fm = getFontMetrics(cachedFont);
            char[] chars = text.toCharArray();
            int width = fm.charsWidth(chars, 0, chars.length);
            if (width < maxWidth) {
                chahedText = text;
            } else {
                width += fm.charWidth('.') * 3;
                int pos = chars.length - 1;
                for (; pos >= 0 && width > maxWidth; pos--) {
                    width -= fm.charWidth(chars[pos]);
                }
                chahedText = new String(chars, 0, pos) + "...";
                if (getToolTipText() == null) {
                    setToolTipText(text);
                }
            }

            return chahedText;
        }

    };
    if (wrap) {
        label.setLineWrap(true);
    }
    if (maxWidth > 0) {
        label.setMaxLineSpan(maxWidth);
    }
    label.setEnabled(source.isEnabled());
    label.setForeground(source.getForeground());
    label.setOpaque(source.isOpaque());
    label.setBackground(source.getBackground());
    label.setFont(source.getFont());
    label.setBorder(source.getBorder());
    label.setToolTipText(source.getToolTipText());
    return label;
}

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From source file:krasa.cpu.CpuUsagePanel.java

@Override
public void paintComponent(final Graphics g) {
    final boolean pressed = getModel().isPressed();
    final boolean stateChanged = myWasPressed != pressed;
    myWasPressed = pressed;//w ww . ja v  a2 s .com
    Image bufferedImage = myBufferedImage;

    if (bufferedImage == null || stateChanged) {
        final Dimension size = getSize();
        final Insets insets = getInsets();

        bufferedImage = UIUtil.createImage(g, size.width, size.height, BufferedImage.TYPE_INT_ARGB);
        final Graphics2D g2 = (Graphics2D) bufferedImage.getGraphics().create();

        final int max = 100;
        int system = CpuUsageManager.system;
        int process = CpuUsageManager.process;
        final int otherProcesses = system - process;

        final int totalBarLength = size.width - insets.left - insets.right - 3;
        final int processUsageBarLength = totalBarLength * process / max;
        final int otherProcessesUsageBarLength = totalBarLength * otherProcesses / max;
        final int barHeight = Math.max(size.height, getFont().getSize() + 2);
        final int yOffset = (size.height - barHeight) / 2;
        final int xOffset = insets.left;

        // background
        g2.setColor(UIUtil.getPanelBackground());
        g2.fillRect(0, 0, size.width, size.height);

        // gauge (ide)
        g2.setColor(ideColor);
        g2.fillRect(xOffset + 1, yOffset, processUsageBarLength + 1, barHeight);

        // gauge (system)
        g2.setColor(systemColor);
        g2.fillRect(xOffset + processUsageBarLength + 1, yOffset, otherProcessesUsageBarLength + 1, barHeight);

        // label
        g2.setFont(getFont());
        // final String info = CpuUsageBundle.message("cpu.usage.panel.message.text", CpuUsageManager.process,
        // CpuUsageManager.system);
        final String info = fixedLengthString(String.valueOf(process), 3) + "% / "
                + fixedLengthString(String.valueOf(system), 3) + "%";

        final FontMetrics fontMetrics = g.getFontMetrics();
        final int infoWidth = fontMetrics.charsWidth(info.toCharArray(), 0, info.length());
        final int infoHeight = fontMetrics.getAscent();
        UISettings.setupAntialiasing(g2);

        final Color fg = pressed ? UIUtil.getLabelDisabledForeground() : JBColor.foreground();
        g2.setColor(fg);
        g2.drawString(info, xOffset + (totalBarLength - infoWidth) / 2,
                yOffset + infoHeight + (barHeight - infoHeight) / 2 - 1);

        // border
        g2.setStroke(new BasicStroke(1));
        g2.setColor(JBColor.GRAY);
        g2.drawRect(0, 0, size.width - 2, size.height - 1);

        g2.dispose();
        myBufferedImage = bufferedImage;
    }

    draw(g, bufferedImage);
}

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From source file:util.ui.UiUtilities.java

/**
 * Gets the width of the specified char array.
 *
 * @param chars// w w  w  .java  2  s  .  c o m
 *          The char array to get the width for.
 * @param offset
 *          The offset where to start.
 * @param length
 *          The length of the measure.
 * @param font
 *          The font being the base of the measure.
 * @return the width of the specified char array.
 */
public static int getCharsWidth(Font font, char[] chars, int offset, int length) {
    if (chars == null) {
        return 0;
    }

    FontMetrics metrics = HELPER_LABEL.getFontMetrics(font);
    return metrics.charsWidth(chars, offset, length);
}

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