Example usage for java.awt.font LineMetrics getAscent

List of usage examples for java.awt.font LineMetrics getAscent

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Introduction

In this page you can find the example usage for java.awt.font LineMetrics getAscent.

Prototype

public abstract float getAscent();

Source Link

Document

Returns the ascent of the text.

Usage

From source file:Main.java

/** Draw 'str' centered at 'p'. */
public static void drawCenteredText(Graphics g, Point p, String str) {
    FontMetrics fm = g.getFontMetrics();
    LineMetrics lm = fm.getLineMetrics(str, g);

    // Go to 'p', then add a/2 to get to the baseline.
    // I ignore the descent because it looks better to center without
    // regard to descenders.
    int baseY = p.y + (int) (lm.getAscent() / 2);
    int baseX = p.x - fm.stringWidth(str) / 2;

    g.drawString(str, baseX, baseY);//  w w w  . j av  a  2s  . com
}

From source file:Main.java

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

    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    Font font = new Font("Serif", Font.PLAIN, 72);
    g2.setFont(font);//from  w  w w.  j a  v  a2s .  c  o m

    String s = "this is a test";
    float x = 50, y = 150;

    // Draw the baseline.
    FontRenderContext frc = g2.getFontRenderContext();
    float width = (float) font.getStringBounds(s, frc).getWidth();
    Line2D baseline = new Line2D.Float(x, y, x + width, y);
    g2.setPaint(Color.red);
    g2.draw(baseline);

    // Draw the ascent.
    LineMetrics lm = font.getLineMetrics(s, frc);
    Line2D ascent = new Line2D.Float(x, y - lm.getAscent(), x + width, y - lm.getAscent());
    g2.draw(ascent);

    // Draw the descent.
    Line2D descent = new Line2D.Float(x, y + lm.getDescent(), x + width, y + lm.getDescent());
    g2.draw(descent);

    // Draw the leading.
    Line2D leading = new Line2D.Float(x, y + lm.getDescent() + lm.getLeading(), x + width,
            y + lm.getDescent() + lm.getLeading());
    g2.draw(leading);

    // Render the string.
    g2.setPaint(Color.black);
    g2.drawString(s, x, y);
}

From source file:LineMetricsIllustration.java

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

    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    Font font = new Font("Serif", Font.PLAIN, 72);
    g2.setFont(font);/* ww  w.  java2  s. c  o m*/

    String s = "Java Source and Support";
    float x = 50, y = 150;

    // Draw the baseline.
    FontRenderContext frc = g2.getFontRenderContext();
    float width = (float) font.getStringBounds(s, frc).getWidth();
    Line2D baseline = new Line2D.Float(x, y, x + width, y);
    g2.setPaint(Color.red);
    g2.draw(baseline);

    // Draw the ascent.
    LineMetrics lm = font.getLineMetrics(s, frc);
    Line2D ascent = new Line2D.Float(x, y - lm.getAscent(), x + width, y - lm.getAscent());
    g2.draw(ascent);

    // Draw the descent.
    Line2D descent = new Line2D.Float(x, y + lm.getDescent(), x + width, y + lm.getDescent());
    g2.draw(descent);

    // Draw the leading.
    Line2D leading = new Line2D.Float(x, y + lm.getDescent() + lm.getLeading(), x + width,
            y + lm.getDescent() + lm.getLeading());
    g2.draw(leading);

    // Render the string.
    g2.setPaint(Color.black);
    g2.drawString(s, x, y);
}

From source file:MainClass.java

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

    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    Font font = new Font("Serif", Font.PLAIN, 72);
    g2.setFont(font);/*from w  w w . j  a  v a2 s.  co m*/

    String s = "www.java2s.com";
    float x = 50, y = 150;

    FontRenderContext frc = g2.getFontRenderContext();
    float width = (float) font.getStringBounds(s, frc).getWidth();
    Line2D baseline = new Line2D.Float(x, y, x + width, y);
    g2.setPaint(Color.lightGray);
    g2.draw(baseline);

    // Draw the ascent.
    LineMetrics lm = font.getLineMetrics(s, frc);
    Line2D ascent = new Line2D.Float(x, y - lm.getAscent(), x + width, y - lm.getAscent());
    g2.draw(ascent);

    // Draw the descent.
    Line2D descent = new Line2D.Float(x, y + lm.getDescent(), x + width, y + lm.getDescent());
    g2.draw(descent);

    // Draw the leading.
    Line2D leading = new Line2D.Float(x, y + lm.getDescent() + lm.getLeading(), x + width,
            y + lm.getDescent() + lm.getLeading());
    g2.draw(leading);

    // Render the string.
    g2.setPaint(Color.black);
    g2.drawString(s, x, y);
}

From source file:FontShow.java

public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    Font font = new Font("Dialog", Font.PLAIN, 96);
    g2.setFont(font);//w  w  w .  j  a  v a2  s .c o  m
    int width = getSize().width;
    int height = getSize().height;

    String message = "Java2s";

    FontRenderContext frc = g2.getFontRenderContext();
    LineMetrics metrics = font.getLineMetrics(message, frc);
    float messageWidth = (float) font.getStringBounds(message, frc).getWidth();

    // center text
    float ascent = metrics.getAscent();
    float descent = metrics.getDescent();
    float x = (width - messageWidth) / 2;
    float y = (height + metrics.getHeight()) / 2 - descent;

    int PAD = 25;
    g2.setPaint(getBackground());
    g2.fillRect(0, 0, width, height);

    g2.setPaint(getForeground());
    g2.drawString(message, x, y);

    g2.setPaint(Color.white); // Base lines
    drawLine(g2, x - PAD, y, x + messageWidth + PAD, y);
    drawLine(g2, x, y + PAD, x, y - ascent - PAD);
    g2.setPaint(Color.green); // Ascent line
    drawLine(g2, x - PAD, y - ascent, x + messageWidth + PAD, y - ascent);
    g2.setPaint(Color.red); // Descent line
    drawLine(g2, x - PAD, y + descent, x + messageWidth + PAD, y + descent);
}

From source file:net.sourceforge.processdash.ui.web.reports.RadarPlot.java

/**
 * Draws the label for one radar axis./*from   ww  w .  ja va  2 s  .  co m*/
 *
 * @param g2 The graphics device.
 * @param chartArea The area for the radar chart.
 * @param data The data for the plot.
 * @param axis The axis (zero-based index).
 * @param startAngle The starting angle.
 */
protected void drawLabel(Graphics2D g2, Rectangle2D chartArea, String label, int axis, double labelX,
        double labelY) {

    // handle label drawing...
    FontRenderContext frc = g2.getFontRenderContext();
    Rectangle2D labelBounds = this.axisLabelFont.getStringBounds(label, frc);
    LineMetrics lm = this.axisLabelFont.getLineMetrics(label, frc);
    double ascent = lm.getAscent();

    if (labelX == chartArea.getCenterX())
        labelX -= labelBounds.getWidth() / 2;
    else if (labelX < chartArea.getCenterX())
        labelX -= labelBounds.getWidth();
    if (labelY > chartArea.getCenterY())
        labelY += ascent;

    g2.setPaint(this.axisLabelPaint);
    g2.setFont(this.axisLabelFont);
    g2.drawString(label, (float) labelX, (float) labelY);
}

From source file:genlab.gui.jfreechart.EnhancedSpiderWebPlot.java

/**
 * Draws the label for one axis.//from   w w w . j a va 2 s.  c  o  m
 *
 * @param g2  the graphics device.
 * @param plotArea  the plot area
 * @param value  the value of the label (ignored).
 * @param cat  the category (zero-based index).
 * @param startAngle  the starting angle.
 * @param extent  the extent of the arc.
 */
protected void drawLabel(Graphics2D g2, Rectangle2D plotArea, double value, int cat, double startAngle,
        double extent) {
    FontRenderContext frc = g2.getFontRenderContext();

    String label = null;
    if (this.dataExtractOrder == TableOrder.BY_ROW) {
        // if series are in rows, then the categories are the column keys
        label = this.labelGenerator.generateColumnLabel(this.dataset, cat);
    } else {
        // if series are in columns, then the categories are the row keys
        label = this.labelGenerator.generateRowLabel(this.dataset, cat);
    }

    Rectangle2D labelBounds = getLabelFont().getStringBounds(label, frc);
    LineMetrics lm = getLabelFont().getLineMetrics(label, frc);
    double ascent = lm.getAscent();

    Point2D labelLocation = calculateLabelLocation(labelBounds, ascent, plotArea, startAngle);

    Composite saveComposite = g2.getComposite();

    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
    g2.setPaint(getLabelPaint());
    g2.setFont(getLabelFont());
    g2.drawString(label, (float) labelLocation.getX(), (float) labelLocation.getY());
    g2.setComposite(saveComposite);
}

From source file:spinworld.gui.RadarPlot.java

/**
 * Draws the label for one axis.//from  w w w  .  j a  v a  2 s .  co m
 *
 * @param g2  the graphics device.
 * @param plotArea  whole plot drawing area (e.g. including space for labels)
 * @param plotDrawingArea  the plot drawing area (just spanning of axis)
 * @param value  the value of the label (ignored).
 * @param cat  the category (zero-based index).
 * @param startAngle  the starting angle.
 * @param extent  the extent of the arc.
 */
protected void drawLabel(Graphics2D g2, Rectangle2D plotArea, Rectangle2D plotDrawingArea, double value,
        int cat, double startAngle, double extent) {
    FontRenderContext frc = g2.getFontRenderContext();

    String label = null;
    if (this.dataExtractOrder == TableOrder.BY_ROW) {
        // if series are in rows, then the categories are the column keys
        label = this.labelGenerator.generateColumnLabel(this.dataset, cat);
    } else {
        // if series are in columns, then the categories are the row keys
        label = this.labelGenerator.generateRowLabel(this.dataset, cat);
    }

    double angle = normalize(startAngle);

    Font font = getLabelFont();
    Point2D labelLocation;
    do {
        Rectangle2D labelBounds = font.getStringBounds(label, frc);
        LineMetrics lm = font.getLineMetrics(label, frc);
        double ascent = lm.getAscent();

        labelLocation = calculateLabelLocation(labelBounds, ascent, plotDrawingArea, startAngle);

        boolean leftOut = angle > 90 && angle < 270 && labelLocation.getX() < plotArea.getX();
        boolean rightOut = (angle < 90 || angle > 270)
                && labelLocation.getX() + labelBounds.getWidth() > plotArea.getX() + plotArea.getWidth();

        if (leftOut || rightOut) {
            font = font.deriveFont(font.getSize2D() - 1);
        } else {
            break;
        }
    } while (font.getSize() > 8);

    Composite saveComposite = g2.getComposite();

    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
    g2.setPaint(getLabelPaint());
    g2.setFont(font);
    g2.drawString(label, (float) labelLocation.getX(), (float) labelLocation.getY());
    g2.setComposite(saveComposite);
}

From source file:ded.ui.DiagramController.java

/** The core of the paint routine, after we decide whether to interpose
  * another buffer. *///from  ww  w  .j  av  a 2s .  c o  m
private void innerPaint(Graphics g) {
    super.paint(g);

    // I do not know the proper way to get a font set automatically
    // in a Graphics object.  Calling JComponent.setFont has gotten
    // me nowhere.  Setting it myself when I first get control
    // seems to work; but note that I have to do this *after*
    // calling super.paint().
    g.setFont(this.dedWindow.diagramFont);

    // Filename label.
    if (this.diagram.drawFileName && !this.fileName.isEmpty()) {
        String name = new File(this.fileName).getName();
        FontMetrics fm = g.getFontMetrics();
        LineMetrics lm = fm.getLineMetrics(name, g);
        int x = fileNameLabelMargin;
        int y = fileNameLabelMargin + (int) lm.getAscent();
        g.drawString(name, x, y);
        y += (int) lm.getUnderlineOffset() + 1 /*...*/;
        g.drawLine(x, y, x + fm.stringWidth(name), y);
    }

    // Controllers.
    for (Controller c : this.controllers) {
        if (c.isSelected()) {
            c.paintSelectionBackground(g);
        }
        c.paint(g);
    }

    // Lasso rectangle.
    if (this.mode == Mode.DCM_RECT_LASSO) {
        Rectangle r = this.getLassoRect();
        g.drawRect(r.x, r.y, r.width, r.height);
    }

    // Current focused Component.
    if (debugFocus) {
        KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();
        Component fo = kfm.getFocusOwner();
        g.drawString("Focus: " + fo, 3, this.getHeight() - 22);
    }

    // Mode label.
    if (this.mode != Mode.DCM_SELECT) {
        g.drawString("Mode: " + this.mode.description, 3, this.getHeight() - 4);
    } else if (this.fpsMeasurementMode) {
        this.fpsFrameCount++;
        long current = System.currentTimeMillis();
        long millis = current - this.fpsStartMillis;
        if (millis > 1000) {
            // Update the FPS measurement with the results for this
            // interval.
            this.fpsSampleCount++;
            this.fpsMeasurement = "FPS: " + this.fpsFrameCount + " (millis=" + millis + ", samples="
                    + this.fpsSampleCount + ")";

            // Reset the counters.
            this.fpsStartMillis = current;
            this.fpsFrameCount = 0;
        }
        g.drawString(this.fpsMeasurement + " (Ctrl+G to stop)", 3, this.getHeight() - 4);
    }
}