java.awt.Font#deriveFont ( )源码实例Demo

private void init(Action al) {
    setOpaque(false);
    setBorder(BorderFactory.createEmptyBorder());
    setBorderPainted(false);
    setFocusPainted(false);
    setFocusable(false);
    setContentAreaFilled(false);
    setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
    setModel(new Model());
    if (null != al) {
        addActionListener(al);
        setForeground(ColorManager.getDefault().getLinkColor());
    } else {
        setEnabled(false);
        setForeground(ColorManager.getDefault().getDisabledColor());
    }
    Font font = UIManager.getFont("Tree.font");//NOI18N
    if (underlined) {
        Map<TextAttribute, Object> map = new HashMap<TextAttribute, Object>();
        map.put(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_LOW_ONE_PIXEL);
        font = font.deriveFont(map);
    }
    setFont(font);
}
 

public JavaFontRenderingBox(String str, int type, float size, Font f, boolean kerning) {
    this.size = size;

    if (kerning && KERNING != null) {
        Map<TextAttribute, Object> map = new Hashtable<TextAttribute, Object>();
        map.put(KERNING, KERNING_ON);
        map.put(LIGATURES, LIGATURES_ON);
        f = f.deriveFont(map);
    }

    this.text = new TextLayout(str, f.deriveFont(type), TEMPGRAPHIC.getFontRenderContext());
    Rectangle2D rect = text.getBounds();
    this.height = (float) (-rect.getY() * size / 10);
    this.depth = (float) (rect.getHeight() * size / 10) - this.height;
    this.width = (float) ((rect.getWidth() + rect.getX() + 0.4f) * size / 10);
}
 

public FontPanel( Font2DTest demo, JFrame f ) {
    f2dt = demo;
    parent = f;

    verticalBar = new JScrollBar ( JScrollBar.VERTICAL );
    fc = new FontCanvas();

    this.setLayout( new BorderLayout() );
    this.add( "Center", fc );
    this.add( "East", verticalBar );

    verticalBar.addAdjustmentListener( this );
    this.addComponentListener( new ComponentAdapter() {
        public void componentResized( ComponentEvent e ) {
            updateBackBuffer = true;
            updateFontMetrics = true;
        }
    });

    /// Initialize font and its infos
    testFont = new Font(fontName, fontStyle, (int)fontSize);
    if ((float)((int)fontSize) != fontSize) {
        testFont = testFont.deriveFont(fontSize);
    }
    updateFontInfo();
}
 

/**
 * Fetches and returns default button font nonstatic
 *
 * @return Font to default buttons to
 * @throws java.io.IOException if unable to load font
 */
private Font getMenuFontInternal() throws IOException {
    Font ret;
    try (InputStream tmp = this.getClass().getResourceAsStream(PGTUtil.BUTTON_FONT_LOCATION)) {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        ret = Font.createFont(Font.TRUETYPE_FONT, tmp);
        ret = ret.deriveFont((float) 12); // default to size 12 font
        if (ret != null) {
            ge.registerFont(ret);
        }
    } catch (Exception e) {
        throw new IOException("Unable to load button font.", e);
    }

    return ret;
}
 

/**
 * Attempts to load the given font from the OS's font folder (due to Java's
 * ligature problems)
 *
 * @param fontFamily
 * @return returns loaded font file on success, null otherwise
 */
public static Font loadFontFromOSFileFolder(String fontFamily) {
    Font ret = null;
    try {
        File fontFile = getFontFile(fontFamily);
        if (fontFile != null && fontFile.exists()) {
            ret = Font.createFont(Font.TRUETYPE_FONT, fontFile);
            Map attributes = ret.getAttributes();
            attributes.put(TextAttribute.LIGATURES, TextAttribute.LIGATURES_ON);
            ret = ret.deriveFont(attributes);
        }
    } catch (Exception e) {
        IOHandler.writeErrorLog(e);
        // do nothing here. Failure means returning null
    }

    return ret;
}
 

/**
 * @inheritDoc
 */
@Override
public Object createValue(UIDefaults defaults) {
    Font f = defaults.getFont(parentKey);
    if (f != null) {
        // always round size for now so we have exact int font size
        // (or we may have lame looking fonts)
        float size = Math.round(f.getSize2D() * sizeOffset);
        int style = f.getStyle();
        if (bold != null) {
            if (bold.booleanValue()) {
                style = style | Font.BOLD;
            } else {
                style = style & ~Font.BOLD;
            }
        }
        if (italic != null) {
            if (italic.booleanValue()) {
                style = style | Font.ITALIC;
            } else {
                style = style & ~Font.ITALIC;
            }
        }
        return f.deriveFont(style, size);
    } else {
        return null;
    }
}
 

@Override
protected FontMetrics getFontMetrics() {
	Font font = tabPane.getFont();
	// selected tab is bold, to avoid resizing always assume bold and make tabs bigger
	font = font.deriveFont(Font.BOLD);
	return tabPane.getFontMetrics(font);
}
 

/**
 * @param font The font to scale.
 * @return The scaled font.
 */
public Font scale(Font font) {
    if (mScale == 1) {
        return font;
    }
    return font.deriveFont((float) (font.getSize() * mScale));
}
 

public static void addText(Graphics2D g, String text,
        Font font, Color color, int x, int y,
        float opacity, int shadow, int angle,
        boolean isOutline) {
    try {
        AffineTransform saveAT = g.getTransform();
        AffineTransform affineTransform = new AffineTransform();
        affineTransform.rotate(Math.toRadians(angle), 0, 0);
        Font rotatedFont = font.deriveFont(affineTransform);
        if (shadow > 0) {  // Not blurred. Can improve
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
            g.setColor(Color.GRAY);
            g.setFont(rotatedFont);
            g.drawString(text, x + shadow, y + shadow);
        }

        g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity));
        g.setColor(color);
        g.setFont(rotatedFont);
        if (isOutline) {
            FontRenderContext frc = g.getFontRenderContext();
            TextLayout textTl = new TextLayout(text, rotatedFont, frc);
            Shape outline = textTl.getOutline(null);
            AffineTransform transform = g.getTransform();
            transform.translate(x, y);
            g.transform(transform);
            g.draw(outline);
        } else {
            g.drawString(text, x, y);
        }
        g.setTransform(saveAT);
    } catch (Exception e) {
        logger.error(e.toString());
    }
}
 

public int measureText( String text )
    throws FontFormatException, IOException
{
    URL fontURL =
        new URL( Jenkins.getInstance().pluginManager.getPlugin( "status-badges" ).baseResourceURL,
                 "fonts/verdana.ttf" );
    InputStream fontStream = fontURL.openStream();
    Font defaultFont = Font.createFont( Font.TRUETYPE_FONT, fontStream );
    defaultFont = defaultFont.deriveFont( 11f );
    Canvas canvas = new Canvas();
    FontMetrics fontMetrics = canvas.getFontMetrics( defaultFont );
    return fontMetrics.stringWidth( text );
}
 

public static Font createTrueType(InputStream in, int size) throws IOException, FontFormatException {
   assert (in != null);
   Font font = Font.createFont(Font.TRUETYPE_FONT, in);
   GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
   ge.registerFont(font);
   return font.deriveFont(Font.PLAIN, size);
}
 

public void setFontParams(String name, float size,
                          int style, int transform) {
    boolean fontModified = false;
    if ( !name.equals( fontName ) || style != fontStyle )
      fontModified = true;

    fontName = name;
    fontSize = size;
    fontStyle = style;
    fontTransform = transform;

    /// Recreate the font as specified
    testFont = new Font(fontName, fontStyle, (int)fontSize);
    if ((float)((int)fontSize) != fontSize) {
        testFont = testFont.deriveFont(fontSize);
    }

    if ( fontTransform != NONE ) {
        AffineTransform at = getAffineTransform( fontTransform );
        testFont = testFont.deriveFont( at );
    }
    updateBackBuffer = true;
    updateFontMetrics = true;
    fc.repaint();
    if ( fontModified ) {
        /// Tell main panel to update the font info
        updateFontInfo();
        f2dt.fireUpdateFontInfo();
    }
}
 

/**
 * Font used to render force elements (units).
 * @param size
 * @return 
 */
public Font getUnitFont(float size)
{
    //load font from resource
    InputStream fontStream = _instance.getClass().getClassLoader().getResourceAsStream("FONTS/UnitFont.ttf");
    //InputStream fontStream = _unitFontStream;

    Font newFont = null;
    try
    {
        //create font
        newFont = Font.createFont(Font.TRUETYPE_FONT, fontStream);
    }
    catch(FontFormatException ffe)
    {
        ErrorLogger.LogException(this.getClass().getName() ,"getUnitFont()",
                new RendererException("UnitFont failed to load.", ffe));
    }
    catch(IOException ioe)
    {
        ErrorLogger.LogException(this.getClass().getName() ,"getUnitFont()",
                new RendererException("UnitFont failed to load.", ioe));
    }
    catch(Exception exc)
    {
        ErrorLogger.LogException(this.getClass().getName() ,"getUnitFont()",
                new RendererException("UnitFont failed to load.", exc));
    }

    //resize font
    newFont = newFont.deriveFont(Font.TRUETYPE_FONT, size);
    //return font
    return newFont;

}
 

public static void main(String[] args) throws Exception {
    GraphicsEnvironment e =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
    Font[] fonts = e.getAllFonts();
    BufferedImage bi = new BufferedImage(500, 500,
            BufferedImage.TYPE_INT_RGB);
    for (AntialiasHint antialiasHint : antialiasHints) {
        for (Font f : fonts) {
            for (StyleAndSize styleAndSize : stylesAndSizes) {
                f = f.deriveFont(styleAndSize.style, styleAndSize.size);
                Graphics2D g2d = bi.createGraphics();
                g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                        antialiasHint.getHint());
                FontMetrics fm = g2d.getFontMetrics(f);
                int[] width;
                int maxWidth = -1;
                int maxAdvance = fm.getMaxAdvance();
                if (debug) {
                    System.out.println("Testing " + f + " in " +
                            antialiasHint);
                    System.out.println("getMaxAdvance: " + maxAdvance);
                }
                if (maxAdvance != -1) {
                    String failureMessage = null;
                    width = fm.getWidths();
                    for (int j = 0; j < width.length; j++) {
                        if (width[j] > maxWidth) {
                            maxWidth = width[j];
                        }
                        if (width[j] > maxAdvance) {
                            failureMessage = "FAILED: getMaxAdvance is " +
                                             "not max for font: " +
                                             f.toString() +
                                             " getMaxAdvance(): " +
                                             maxAdvance +
                                             " getWidths()[" + j + "]: " +
                                             width[j];
                            throw new Exception(failureMessage);
                        }
                    }
                }
                if (debug) {
                    System.out.println("Max char width: " + maxWidth);
                    System.out.println("PASSED");
                    System.out.println(".........................");
                }
            }
        }
    }
    System.out.println("TEST PASS - OK");
}
 

public void init(TestEnvironment env, Result result) {
    // graphics
    graphics = env.getGraphics();

    // text
    String sname = (String)env.getModifier(tscriptList);
    int slen = env.getIntValue(tlengthList);
    text = getString(sname, slen);

    // chars
    chars = text.toCharArray();

    // font
    String fname = (String)env.getModifier(fnameList);
    if ("Physical".equals(fname)) {
        fname = physicalFontNameFor(sname, slen, text);
    }
    int fstyle = env.getIntValue(fstyleList);
    float fsize = ((Float)env.getModifier(fsizeList)).floatValue();
    AffineTransform ftx = (AffineTransform)env.getModifier(ftxList);
    font = new Font(fname, fstyle, (int)fsize);
    if (hasGraphics2D) {
        if (fsize != Math.floor(fsize)) {
            font = font.deriveFont(fsize);
        }
        if (!ftx.isIdentity()) {
            font = font.deriveFont(ftx);
        }
    }

    // graphics
    if (hasGraphics2D) {
        Graphics2D g2d = (Graphics2D)graphics;
        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                             env.getModifier(taaList));
        g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
                             env.isEnabled(tfmTog)
                             ? RenderingHints.VALUE_FRACTIONALMETRICS_ON
                             : RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                             env.isEnabled(gaaTog)
                             ? RenderingHints.VALUE_ANTIALIAS_ON
                             : RenderingHints.VALUE_ANTIALIAS_OFF);
        g2d.transform((AffineTransform)env.getModifier(gtxList));
    }

    // set result
    result.setUnits(text.length());
    result.setUnitName("char");
}
 

public static Font title(Font f)
{
	// XXX In Japanese, bold is not used and hardly readeable if small, just
	// use gothic/non gothic instead.
	return f.deriveFont(Font.BOLD);
}
 

/**
 * Create a scaled {@code Font} where the scale factor is provided
 * explicitly in the parameter.
 * The equivalent of regular text, which would only complicate the
 * source code and slow down the game if used, would be:
 * createFont(FontType.NORMAL, FontSize.TINY, Font.PLAIN,
 *            gui.getImageLibrary().getScalingFactor());
 * 
 * @param fontType How the font should look like.
 * @param fontSize Its relative size.
 * @param style The font style for choosing plain, bold or italic.
 * @param scaleFactor The applied scale factor.
 * @return The created Font.
 */
public static Font createFont(FontType fontType, FontSize fontSize,
                              int style, float scaleFactor) {
    float scaledSize = calcScaledSize(fontSize, scaleFactor);
    String fontKey = getFontKey(fontType);
    Font font = (fontKey == null)
        ? mainFont
        : ResourceManager.getFont(fontKey);
    return font.deriveFont(style, scaledSize);
}
 

/**
 * Checks to see if the font size override setting is enabled and adjusts
 * the given font as necessary to match the override setting. If the setting
 * is not enabled, then <code>font</code> is returned.
 *
 * @param font
 *            The current font to adjust, if necessary.
 * @return a font object with the proper size.
 */
public static Font adjustForFontSizeOverride(Font font) {
	if (FONT_SIZE_OVERRIDE_VALUE == null) {
		return font;
	}

	return font.deriveFont((float) FONT_SIZE_OVERRIDE_VALUE.intValue());
}
 

/**
 * For bold italic font.
 * 
 * @param f
 *            base font
 */
public static Font bold_italic(Font f)
{
	return f.deriveFont(Font.BOLD | Font.ITALIC);
}
 

/**
 * For less important text, like grayed out italic.
 * 
 * @param f
 *            base font
 */
public static Font less(Font f)
{
	return f.deriveFont(Font.ITALIC);
}