Java FontMetrics.getDescent方法代码示例

import java.awt.FontMetrics; //导入方法依赖的package包/类
/**
 * Initialise the font to be used based on configuration
 * 
 * @param baseFont The AWT font to render
 * @param size The point size of the font to generated
 * @param bold True if the font should be rendered in bold typeface
 * @param italic True if the font should be rendered in bold typeface
 */
private void initializeFont(Font baseFont, int size, boolean bold, boolean italic) {
	Map attributes = baseFont.getAttributes();
	attributes.put(TextAttribute.SIZE, new Float(size));
	attributes.put(TextAttribute.WEIGHT, bold ? TextAttribute.WEIGHT_BOLD : TextAttribute.WEIGHT_REGULAR);
	attributes.put(TextAttribute.POSTURE, italic ? TextAttribute.POSTURE_OBLIQUE : TextAttribute.POSTURE_REGULAR);
	try {
		attributes.put(TextAttribute.class.getDeclaredField("KERNING").get(null), TextAttribute.class.getDeclaredField(
			"KERNING_ON").get(null));
	} catch (Exception ignored) {
	}
	font = baseFont.deriveFont(attributes);

	FontMetrics metrics = GlyphPage.getScratchGraphics().getFontMetrics(font);
	ascent = metrics.getAscent();
	descent = metrics.getDescent();
	leading = metrics.getLeading();
	
	// Determine width of space glyph (getGlyphPixelBounds gives a width of zero).
	char[] chars = " ".toCharArray();
	GlyphVector vector = font.layoutGlyphVector(GlyphPage.renderContext, chars, 0, chars.length, Font.LAYOUT_LEFT_TO_RIGHT);
	spaceWidth = vector.getGlyphLogicalBounds(0).getBounds().width;
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
private void renderHtml(Fix f, Graphics g, Font defaultFont, Color defaultColor,
int width, int height, boolean selected) {
    if (icon != null) {
        // The image of the ImageIcon should already be loaded
        // so no ImageObserver should be necessary
        g.drawImage(ImageUtilities.icon2Image(icon), BEFORE_ICON_GAP, (height - icon.getIconHeight()) /2, this);
    }
    int iconWidth = BEFORE_ICON_GAP + icon.getIconWidth() + AFTER_ICON_GAP;
    int textEnd = width - AFTER_ICON_GAP - subMenuIcon.getIconWidth() - AFTER_TEXT_GAP;
    FontMetrics fm = g.getFontMetrics(defaultFont);
    int textY = (height - fm.getHeight())/2 + fm.getHeight() - fm.getDescent();

    // Render left text
    if (textEnd > iconWidth) { // any space for left text?
        HtmlRenderer.renderHTML(f.getText(), g, iconWidth, textY, textEnd, textY,
            defaultFont, defaultColor, HtmlRenderer.STYLE_TRUNCATE, true);//, selected);
    }

    if (HintsControllerImpl.getSubfixes(f).iterator().hasNext()) {
        paintArrowIcon(g, textEnd + AFTER_TEXT_GAP, (height - subMenuIcon.getIconHeight()) /2);
    }
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
private Rectangle getCaretRectangle(TextHitInfo caret) {
    int caretLocation = 0;
    TextLayout layout = composedTextLayout;
    if (layout != null) {
        caretLocation = Math.round(layout.getCaretInfo(caret)[0]);
    }
    Graphics g = getGraphics();
    FontMetrics metrics = null;
    try {
        metrics = g.getFontMetrics();
    } finally {
        g.dispose();
    }
    return new Rectangle(TEXT_ORIGIN_X + caretLocation,
                         TEXT_ORIGIN_Y - metrics.getAscent(),
                         0, metrics.getAscent() + metrics.getDescent());
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
/**
 * Reinitialize the insets parameter with this Border's current Insets.
 * @param c the component for which this border insets value applies
 * @param insets the object to be reinitialized
 */
public Insets getBorderInsets(Component c, Insets insets) {
    if (!(c instanceof JPopupMenu)) {
        return insets;
    }
    FontMetrics fm;
    int         descent = 0;
    int         ascent = 16;

    String title = ((JPopupMenu)c).getLabel();
    if (title == null) {
        insets.left = insets.top = insets.right = insets.bottom = 0;
        return insets;
    }

    fm = c.getFontMetrics(font);

    if(fm != null) {
        descent = fm.getDescent();
        ascent = fm.getAscent();
    }

    insets.top += ascent + descent + TEXT_SPACING + GROOVE_HEIGHT;
    return insets;
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
private void renderText(Graphics2D g) {
  if (this.getText() == null || this.getText().isEmpty()) {
    return;
  }

  final FontMetrics fm = g.getFontMetrics();

  double defaultTextX;
  double defaultTextY = fm.getAscent() + (this.getHeight() - (fm.getAscent() + fm.getDescent())) / 2;
  switch (this.getTextAlign()) {
  case LEFT:
    defaultTextX = this.getTextXMargin();
    break;
  case RIGHT:
    defaultTextX = this.getWidth() - this.getTextXMargin() - fm.stringWidth(this.getTextToRender(g));
    break;
  case CENTER:
  default:
    defaultTextX = this.getWidth() / 2 - fm.stringWidth(this.getTextToRender(g)) / 2.0;
    break;
  }
  if (this.getTextY() == 0) {
    this.setTextY(defaultTextY);
  }

  if (this.getTextX() == 0) {
    this.setTextX(defaultTextX);
  }
  if (this.getTextAngle() == 0) {
    if (this.drawTextShadow()) {
      RenderEngine.drawTextWithShadow(g, this.getTextToRender(g), this.getX() + this.getTextX(), this.getY() + this.getTextY(), this.getTextShadowColor());
    } else {
      RenderEngine.drawText(g, this.getTextToRender(g), this.getX() + this.getTextX(), this.getY() + this.getTextY());
    }
  } else if (this.getTextAngle() == 90) {
    RenderEngine.drawRotatedText(g, this.getX() + this.getTextX(), this.getY() + this.getTextY() - fm.stringWidth(this.getTextToRender(g)), this.getTextAngle(), this.getTextToRender(g));
  } else {
    RenderEngine.drawRotatedText(g, this.getX() + this.getTextX(), this.getY() + this.getTextY(), this.getTextAngle(), this.getTextToRender(g));
  }
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
protected int getMarkSize(Graphics g){
    if (g != null){
        FontMetrics fm = g.getFontMetrics(getColoring().getFont());
        if (fm != null){
            int ret = fm.getAscent() - fm.getDescent();
            return ret - ret%2;
        }
    }
    return -1;
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
@Override
public Dimension getPreferredSize(JComponent c) {
    FontMetrics fm = getTxtFontMetrics();
    int height = fm == null ?
            19 : fm.getAscent() + 2 * fm.getDescent() + 5;
    Insets insets = c.getInsets();
    prefSize.height = height + insets.bottom + insets.top;
    return prefSize;
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
/**
 * Write the given text string in the current font, right-aligned at (<em>x</em>, <em>y</em>).
 *
 * @param  x the <em>x</em>-coordinate of the text
 * @param  y the <em>y</em>-coordinate of the text
 * @param  text the text to write
 */
public static void textRight(double x, double y, String text) {
    if (text == null) throw new IllegalArgumentException();
    offscreen.setFont(font);
    FontMetrics metrics = offscreen.getFontMetrics();
    double xs = scaleX(x);
    double ys = scaleY(y);
    int ws = metrics.stringWidth(text);
    int hs = metrics.getDescent();
    offscreen.drawString(text, (float) (xs - ws), (float) (ys + hs));
    draw();
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
@Override
public Dimension getPreferredSize(JComponent c) {
    FontMetrics fm = getTxtFontMetrics();
    int height = fm == null ?
            17 : fm.getAscent() + 2 * fm.getDescent() + 3;
    Insets insets = c.getInsets();
    prefSize.height = height + insets.bottom + insets.top;
    return prefSize;
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
private void medidaV(Graphics2D g, int l, int t) {
    FontMetrics fm = g.getFontMetrics();
    String vl = dono.FormateUnidadeMedida(height);
    int traco = width;
    int xIni = l;// + (traco) / 2;
    int xFim = xIni + traco;
    int yIni = t;
    int yFim = t + height;
    int xLin = l + (width / 2);

    g.drawLine(xIni, yIni, xFim, yIni);
    g.drawLine(xIni, yFim, xFim, yFim);
    g.drawLine(xLin, yIni, xLin, yFim);

    int degrees = isInvertido() ? 90 : -90;
    int desse = isInvertido() ? 0 : fm.stringWidth(vl);
    //int centra = fm.getHeight() / 2 - fm.getDescent();
    int centra = fm.getHeight() - fm.getDescent();
    centra = isInvertido() ? -centra : centra;

    AffineTransform at = AffineTransform.getRotateInstance(Math.toRadians(degrees));
    Font f = new Font(g.getFont().getName(), Font.BOLD, g.getFont().getSize());
    Font f2 = g.getFont();
    g.setFont(f.deriveFont(at));
    yIni = yIni + (height - fm.stringWidth(vl)) / 2 + desse;
    g.drawString(vl, xLin + centra, yIni);
    g.setFont(f2);
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
private void computeDimensions(Graphics g, Font font, FontMetrics fm) {
	String s = text;
	FontRenderContext frc = ((Graphics2D) g).getFontRenderContext();
	width = fm.stringWidth(s);
	ascent = fm.getAscent();
	descent = fm.getDescent();
	int[] xs = new int[s.length()];
	int[] ys = new int[s.length()];
	for (int i = 0; i < xs.length; i++) {
		xs[i] = fm.stringWidth(s.substring(0, i + 1));
		TextLayout lay = new TextLayout(s.substring(i, i + 1), font, frc);
		Rectangle2D rect = lay.getBounds();
		int asc = (int) Math.ceil(-rect.getMinY());
		int desc = (int) Math.ceil(rect.getMaxY());
		if (asc < 0)
			asc = 0;
		if (asc > 0xFFFF)
			asc = 0xFFFF;
		if (desc < 0)
			desc = 0;
		if (desc > 0xFFFF)
			desc = 0xFFFF;
		ys[i] = (asc << 16) | desc;
	}
	charX = xs;
	charY = ys;
	dimsKnown = true;
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
private static void renderHtml(ClipboardHistoryElement f, Graphics g, Font defaultFont, Color defaultColor,
int width, int height, boolean selected) {
    int textEnd = width - AFTER_ICON_GAP - AFTER_TEXT_GAP;
    FontMetrics fm = g.getFontMetrics(defaultFont);
    int textY = (height - fm.getHeight())/2 + fm.getHeight() - fm.getDescent();

    HtmlRenderer.renderHTML(f.getNumber() + " " + StringEscapeUtils.escapeHtml(f.getShortenText()), g, 1, textY, textEnd, textY, //NOI18N
            defaultFont, defaultColor, HtmlRenderer.STYLE_TRUNCATE, true);//, selected);
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
/**
 * Paints the border for the specified component with the
 * specified position and size.
 * @param c the component for which this border is being painted
 * @param g the paint graphics
 * @param x the x position of the painted border
 * @param y the y position of the painted border
 * @param width the width of the painted border
 * @param height the height of the painted border
 */
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
    if (!(c instanceof JPopupMenu)) {
        return;
    }

    Font origFont = g.getFont();
    Color origColor = g.getColor();
    JPopupMenu popup = (JPopupMenu)c;

    String title = popup.getLabel();
    if (title == null) {
        return;
    }

    g.setFont(font);

    FontMetrics fm = SwingUtilities2.getFontMetrics(popup, g, font);
    int         fontHeight = fm.getHeight();
    int         descent = fm.getDescent();
    int         ascent = fm.getAscent();
    Point       textLoc = new Point();
    int         stringWidth = SwingUtilities2.stringWidth(popup, fm,
                                                          title);

    textLoc.y = y + ascent + TEXT_SPACING;
    textLoc.x = x + ((width - stringWidth) / 2);

    g.setColor(background);
    g.fillRect(textLoc.x - TEXT_SPACING, textLoc.y - (fontHeight-descent),
               stringWidth + (2 * TEXT_SPACING), fontHeight - descent);
    g.setColor(foreground);
    SwingUtilities2.drawString(popup, g, title, textLoc.x, textLoc.y);

    MotifGraphicsUtils.drawGroove(g, x, textLoc.y + TEXT_SPACING,
                                  width, GROOVE_HEIGHT,
                                  shadowColor, highlightColor);

    g.setFont(origFont);
    g.setColor(origColor);
}
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
public void bordaLeftRigth(Graphics2D g, boolean isrigth) {
        FontMetrics fm = g.getFontMetrics();
        String vl = FormateUnidadeMedida(H);
        int pre_x = (isrigth ? getLeftWidth() : getLeft());
        int traco = largTraco < margem ? largTraco : margem;
        traco = (isrigth ? -traco : traco);
        int xIni = pre_x + (isrigth ? -2 : 2);
        int xFim = xIni + 2 * traco;
        int yIni = getTop() + margem;
        int yFim = getTopHeight() - margem;
        int xLin = xIni;
//        int pre_x = (isrigth ? getLeftWidth() - margem : getLeft());
//        int traco = largTraco < margem ? largTraco : margem;
//        int xIni = pre_x + (margem - traco) / 2;
//        int xFim = xIni + traco;
//        int yIni = getTop() + margem;
//        int yFim = getTopHeight() - margem;
//        int xLin = pre_x + margem / 2;

        g.setColor(getCorRegua());
        g.drawLine(xIni, yIni, xFim, yIni);
        g.drawLine(xIni, yFim, xFim, yFim);
        g.drawLine(xLin, yIni, xLin, yFim);

        int blc = calculeSubEspaco(W);
        int sr = yIni;
        xFim -= traco;

        int dv = modInteiro(blc);
        int subblc = 0;
        if (dv > 0) {
            subblc = blc / dv;
        }
        while (sr < yFim) {
            if (dv > 0) {
                int a = blc - subblc;
                while (a > 0) {
                    if (sr + a < yFim) {
                        g.drawLine(xIni, sr + a, xFim - traco / 2, sr + a);
                    }
                    a -= subblc;
                }
            }
            g.drawLine(xIni, sr, xFim, sr);
            sr += blc;
        }

        if (isMostrarTextoRegua()) {
            int degrees = isrigth ? 90 : -90;
            int desse = isrigth ? 0 : fm.stringWidth(vl);
            int centra = fm.getHeight() / 2 - fm.getDescent();
            centra = isrigth ? -centra : centra;

            AffineTransform at = AffineTransform.getRotateInstance(Math.toRadians(degrees));
            Font f = new Font(getFont().getName(), Font.BOLD, getFont().getSize());
            g.setFont(f.deriveFont(at));
            g.setColor(getForeColor());
            xLin = pre_x - (isrigth ? margem / 2 : -margem / 2);
            yIni = yIni + (H - fm.stringWidth(vl)) / 2 + desse;
            g.drawString(vl, xLin + centra, yIni);
            g.setFont(getFont());
        }
    }
 

import java.awt.FontMetrics; //导入方法依赖的package包/类
static ImmInsets __getDialogPadding()
{
  if (_sDialogPadding != null)
    return _sDialogPadding;

  // Create a BufferedImage that we can use to rasterize some glyphs.
  int width = 40;
  int height = 40;
  BufferedImage image = new BufferedImage(40,
                                          40,
                                          BufferedImage.TYPE_INT_ARGB);

  // Get the Graphics object to use to draw into the image
  Graphics g = image.getGraphics();

  // Clear out the image
  g.setColor(Color.white);
  g.fillRect(0, 0, width, height);

  // Render our glyphs
  g.setColor(Color.black);
  g.setFont(new Font("Dialog", Font.PLAIN, 12));

  FontMetrics metrics = g.getFontMetrics();
  int baseline = metrics.getAscent();

  g.drawString("X", 0, baseline);

  // Now that we have rendered the glyphs, we examine the
  // image to see how many lines of padding we've got.
  int top = 0;
  for (int y = 0; y < height; y++)
  {
    if (!_isWhiteScanline(image, y, width))
    {
      top = y;
      break;
    }
  }

  // Just use the descent as the bottom padding
  int bottom = metrics.getDescent();

  _sDialogPadding = new ImmInsets(top, 0, bottom, 0);


  // Clean up
  g.dispose();
  image.flush();

  return _sDialogPadding;
}