Java Graphics2D.getFontRenderContext方法代码示例

import java.awt.Graphics2D; //导入方法依赖的package包/类
private LineBreakMeasurer[] getLineBreakMeasurers(Graphics2D g) {
    if (lbmTexto == null && (Texto != null && !Texto.equals(""))) {
        lbmTexto = new LineBreakMeasurer[Textos.length];
        for (int i = 0; i < lbmTexto.length; i++) {
            String tmp = Textos[i].isEmpty()? " " : Textos[i];
            AttributedString attribString = new AttributedString(tmp);
            attribString.addAttribute(TextAttribute.FONT, getFont());
            //attribString.addAttribute(TextAttribute.FONT, getFont());
            AttributedCharacterIterator attribCharIterator = attribString.getIterator();
            //FontRenderContext frc = new FontRenderContext(null, true, false);
            FontRenderContext frc = g.getFontRenderContext();
            lbmTexto[i] = new LineBreakMeasurer(attribCharIterator, frc);
        }
    }
    return lbmTexto;
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
private String getTrimmedText(String text, Graphics2D g, double maxWidth) {
	FontRenderContext frc = g.getFontRenderContext();
	Rectangle2D rect = getFont().getStringBounds(text, frc);

	if (rect.getWidth() <= maxWidth)
		return text;

	text += "...";
	do {
		text = text.replaceFirst(".\\.\\.\\.$", "...");

		rect = getFont().getStringBounds(text, frc);
	} while (rect.getWidth() > maxWidth && text.length() > 4);

	return text;
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
protected BufferedImage createImage(Color bgColor) {
    BufferedImage bufferedImage = new BufferedImage(END_X, END_Y,
            BufferedImage.TYPE_INT_RGB);
    // create graphics and graphics2d
    final Graphics graphics = bufferedImage.getGraphics();
    final Graphics2D g2d = (Graphics2D) graphics;

    // set the background color
    g2d.setBackground(bgColor == null ? Color.gray : bgColor);
    g2d.clearRect(START_X, START_Y, END_X, END_Y);
    // create a pattern for the background
    createPattern(g2d);
    // set the fonts and font rendering hints
    Font font = new Font("Helvetica", Font.ITALIC, 30);
    g2d.setFont(font);
    FontRenderContext frc = g2d.getFontRenderContext();
    g2d.translate(10, 24);
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
            RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setStroke(new BasicStroke(3));

    // sets the foreground color
    g2d.setPaint(Color.DARK_GRAY);
    GlyphVector gv = font.createGlyphVector(frc, message);
    int numGlyphs = gv.getNumGlyphs();
    for (int ii = 0; ii < numGlyphs; ii++) {
        AffineTransform at;
        Point2D p = gv.getGlyphPosition(ii);
        at = AffineTransform.getTranslateInstance(p.getX(), p.getY());
        at.rotate(Math.PI / 8);
        Shape shape = gv.getGlyphOutline(ii);
        Shape sss = at.createTransformedShape(shape);
        g2d.fill(sss);
    }
    return blurImage(bufferedImage);
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
@Override
public void render(final Graphics2D g) {
  if (this.displayedText == null || this.displayedText.isEmpty() || !Game.getRenderEngine().canRender(this.entity)) {
    return;
  }

  final Point2D location = Game.getCamera().getViewPortLocation(this.entity);
  RenderEngine.renderImage(g, this.bubble, new Point2D.Double(location.getX() + this.entity.getWidth() / 2.0 - this.textBoxWidth / 2.0 - PADDING, location.getY() - this.height - PADDING));

  g.setColor(SPEAK_FONT_COLOR);
  final FontRenderContext frc = g.getFontRenderContext();

  final String text = this.displayedText;
  final AttributedString styledText = new AttributedString(text);
  styledText.addAttribute(TextAttribute.FONT, this.font);
  final AttributedCharacterIterator iterator = styledText.getIterator();
  final LineBreakMeasurer measurer = new LineBreakMeasurer(iterator, frc);
  measurer.setPosition(0);
  final float x = (float) Game.getCamera().getViewPortLocation(this.entity).getX() + this.entity.getWidth() / 2.0f - this.textBoxWidth / 2.0f;
  float y = (float) Game.getCamera().getViewPortLocation(this.entity).getY() - this.height;
  while (measurer.getPosition() < text.length()) {
    final TextLayout layout = measurer.nextLayout(this.textBoxWidth);

    y += layout.getAscent();
    final float dx = layout.isLeftToRight() ? 0 : this.textBoxWidth - layout.getAdvance();
    layout.draw(g, x + dx, y);
    y += layout.getDescent() + layout.getLeading();
  }
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Return Cell's real size (this method considers Icon and name size)
 * @param graph <code>JGraph</code> object to retrive font dimension informations
 * @return cell's real size
 *
 * Bertoli Marco  4-giu-2005
 */
public Dimension getSize(JGraph graph) {
	Dimension cellDimension = (Dimension) imageDimension.clone();
	// Gets the graph font
	Font font = graph.getFont();
	// Gets the graphical context
	Graphics2D g2D = (Graphics2D) graph.getGraphics();
	// Gets the bounds of the cell name
	FontRenderContext frc = g2D.getFontRenderContext();
	Rectangle r = font.getStringBounds(getUserObject().toString(), frc).getBounds();
	// Sets the cell dimension
	cellDimension.height += r.height + 5;
	cellDimension.width = Math.max(cellDimension.width, r.width + 10);
	return cellDimension;
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception
{
    // The bug only happens with Type 1 fonts. The Ghostscript font files
    // should be commonly available. From distro pacakge or
    //  ftp://ftp.gnu.org/gnu/ghostscript/gnu-gs-fonts-other-6.0.tar.gz
    // Pass pfa/pfb font file as argument
    String path = args[0];

    // Load
    InputStream stream = new FileInputStream(path);
    Font font = Font.createFont(Font.TYPE1_FONT,stream);

    // Ensure native bits have been generated
    BufferedImage img = new BufferedImage(100,100,
                             BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2d = img.createGraphics();
    FontRenderContext frc = g2d.getFontRenderContext();

    font.getLineMetrics("derp",frc);

    // Force disposal -
    // System.gc() is not sufficient.
    Field font2DHandleField = Font.class.getDeclaredField("font2DHandle");
    font2DHandleField.setAccessible(true);
    sun.font.Font2DHandle font2DHandle =
                  (sun.font.Font2DHandle)font2DHandleField.get(font);

    sun.font.Font2D font2D = font2DHandle.font2D;
    sun.font.Type1Font type1Font = (sun.font.Type1Font)font2D;

    Method getScalerMethod =
    sun.font.Type1Font.class.getDeclaredMethod("getScaler");
    getScalerMethod.setAccessible(true);
    sun.font.FontScaler scaler =
              (sun.font.FontScaler)getScalerMethod.invoke(type1Font);

    // dispose should not crash due to double free
    scaler.dispose();
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Estimates the maximum width of the tick labels, assuming the specified 
 * tick unit is used.
 * <P>
 * Rather than computing the string bounds of every tick on the axis, we
 * just look at two values: the lower bound and the upper bound for the 
 * axis.  These two values will usually be representative.
 *
 * @param g2  the graphics device.
 * @param unit  the tick unit to use for calculation.
 *
 * @return The estimated maximum width of the tick labels.
 */
private double estimateMaximumTickLabelWidth(Graphics2D g2, 
                                             DateTickUnit unit) {

    RectangleInsets tickLabelInsets = getTickLabelInsets();
    double result = tickLabelInsets.getLeft() + tickLabelInsets.getRight();

    Font tickLabelFont = getTickLabelFont();
    FontRenderContext frc = g2.getFontRenderContext();
    LineMetrics lm = tickLabelFont.getLineMetrics("ABCxyz", frc);
    if (isVerticalTickLabels()) {
        // all tick labels have the same width (equal to the height of 
        // the font)...
        result += lm.getHeight();
    }
    else {
        // look at lower and upper bounds...
        DateRange range = (DateRange) getRange();
        Date lower = range.getLowerDate();
        Date upper = range.getUpperDate();
        String lowerStr = null;
        String upperStr = null;
        DateFormat formatter = getDateFormatOverride();
        if (formatter != null) {
            lowerStr = formatter.format(lower);
            upperStr = formatter.format(upper);
        }
        else {
            lowerStr = unit.dateToString(lower);
            upperStr = unit.dateToString(upper);
        }
        FontMetrics fm = g2.getFontMetrics(tickLabelFont);
        double w1 = fm.stringWidth(lowerStr);
        double w2 = fm.stringWidth(upperStr);
        result += Math.max(w1, w2);
    }

    return result;

}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
@Override
protected void paintComponent(Graphics g) {
    atualizar();
    Graphics2D g2 = (Graphics2D) g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
    g2.setFont(FONT);
    FontRenderContext frc = g2.getFontRenderContext();
    TextLayout textLayout = new TextLayout(Integer.toString(value), FONT, frc);
    g2.setPaint(textColor);
    Shape outline = textLayout.getOutline(AffineTransform.getTranslateInstance(value < 10 ? 20 : type == SHIELD ? 10 : 14, 30));
    g2.fill(outline);
    g2.setPaint(BLACK);
    g2.draw(outline);
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * Estimates the maximum width of the tick labels, assuming the specified tick unit is used.
 * <P>
 * Rather than computing the string bounds of every tick on the axis, we just look at two
 * values: the lower bound and the upper bound for the axis.  These two values will usually
 * be representative.
 *
 * @param g2  the graphics device.
 * @param unit  the tick unit to use for calculation.
 *
 * @return the estimated maximum width of the tick labels.
 */
private double estimateMaximumTickLabelWidth(Graphics2D g2, DateTickUnit unit) {

    Insets tickLabelInsets = getTickLabelInsets();
    double result = tickLabelInsets.left + tickLabelInsets.right;

    Font tickLabelFont = getTickLabelFont();
    FontRenderContext frc = g2.getFontRenderContext();
    LineMetrics lm = tickLabelFont.getLineMetrics("ABCxyz", frc);
    if (isVerticalTickLabels()) {
        // all tick labels have the same width (equal to the height of the font)...
        result += lm.getHeight();
    }
    else {
        // look at lower and upper bounds...
        DateRange range = (DateRange) getRange();
        Date lower = range.getLowerDate();
        Date upper = range.getUpperDate();
        String lowerStr = null;
        String upperStr = null;
        DateFormat formatter = getDateFormatOverride();
        if (formatter != null) {
            lowerStr = formatter.format(lower);
            upperStr = formatter.format(upper);
        }
        else {
            lowerStr = unit.dateToString(lower);
            upperStr = unit.dateToString(upper);
        }
        FontMetrics fm = g2.getFontMetrics(tickLabelFont);
        double w1 = fm.stringWidth(lowerStr);
        double w2 = fm.stringWidth(upperStr);
        result += Math.max(w1, w2);
    }

    return result;

}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
public static float grabMaxTextSize(String textToFit, int widthConstraint, int heightConstraint, Graphics2D g) {
	float textSize = 1;
	
	
	while(true) {
		g.setFont(FontResources.mainFont.deriveFont(textSize));
		
		FontRenderContext frc = g.getFontRenderContext();
		Rectangle2D bounds = g.getFont().getStringBounds(textToFit, frc);
		
		int textWidth = (int) bounds.getWidth();
		int textHeight = (int) bounds.getHeight();
		
		
		if(textWidth < widthConstraint && textHeight < heightConstraint)
			textSize ++;
		else
			break;
	}
	
	
	return textSize;
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
public void init(TestEnvironment env, Result results){
    super.init(env, results);
    g2d = (Graphics2D)graphics;
    frc = g2d.getFontRenderContext();
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
    FontMetrics fm;
    Graphics2D g2 = (Graphics2D)g2d.create();

    /// ABP
    if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
        g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
        fm = g2.getFontMetrics();
    }
    else {
        fm = g2.getFontMetrics();
    }

    maxAscent = fm.getMaxAscent();
    maxDescent = fm.getMaxDescent();
    if (maxAscent == 0) maxAscent = 10;
    if (maxDescent == 0) maxDescent = 5;
    if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
        /// Give slight extra room for each character
        maxAscent += 3;
        maxDescent += 3;
        gridWidth = fm.getMaxAdvance() + 6;
        gridHeight = maxAscent + maxDescent;
        if ( force16Cols )
          numCharAcross = 16;
        else
          numCharAcross = ( w - 10 ) / gridWidth;
        numCharDown = ( h - 10 ) / gridHeight;

        canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
        canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
        if ( numCharDown == 0 || numCharAcross == 0 )
          throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );

        if ( !isPrinting )
          resetScrollbar( verticalBar.getValue() * numCharAcross );
    }
    else {
        maxDescent += fm.getLeading();
        canvasInset_X = 5;
        canvasInset_Y = 5;
        /// gridWidth and numCharAcross will not be used in this mode...
        gridHeight = maxAscent + maxDescent;
        numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;

        if ( numCharDown == 0 )
          throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
        /// If this is text loaded from file, prepares the LineBreak'ed
        /// text layout at this point
        if ( textToUse == FILE_TEXT ) {
            if ( !isPrinting )
              f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
            lineBreakTLs = new Vector();
            for ( int i = 0; i < fileText.length; i++ ) {
                AttributedString as =
                  new AttributedString( fileText[i], g2.getFont().getAttributes() );

                LineBreakMeasurer lbm =
                  new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );

                while ( lbm.getPosition() < fileText[i].length() )
                  lineBreakTLs.add( lbm.nextLayout( (float) w ));

            }
        }
        if ( !isPrinting )
          resetScrollbar( verticalBar.getValue() );
    }
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
private void modeSpecificDrawLine( Graphics2D g2, String line,
                                   int baseX, int baseY ) {
    /// ABP - keep track of old tform, restore it later
    AffineTransform oldTx = null;
    oldTx = g2.getTransform();
    g2.translate( baseX, baseY );
    g2.transform( getAffineTransform( g2Transform ) );

    switch ( drawMethod ) {
      case DRAW_STRING:
        g2.drawString( line, 0, 0 );
        break;
      case DRAW_CHARS:
        g2.drawChars( line.toCharArray(), 0, line.length(), 0, 0 );
        break;
      case DRAW_BYTES:
        try {
            byte lineBytes[] = line.getBytes( "ISO-8859-1" );
            g2.drawBytes( lineBytes, 0, lineBytes.length, 0, 0 );
        }
        catch ( Exception e ) {
            e.printStackTrace();
        }
        break;
      case DRAW_GLYPHV:
        GlyphVector gv =
          testFont.createGlyphVector( g2.getFontRenderContext(), line );
        g2.drawGlyphVector( gv, (float) 0, (float) 0 );
        break;
      case TL_DRAW:
        TextLayout tl = new TextLayout( line, testFont,
                                        g2.getFontRenderContext() );
        tl.draw( g2, (float) 0, (float) 0 );
        break;
      case GV_OUTLINE:
        GlyphVector gvo =
          testFont.createGlyphVector( g2.getFontRenderContext(), line );
        g2.draw( gvo.getOutline( (float) 0, (float) 0 ));
        break;
      case TL_OUTLINE:
        TextLayout tlo =
          new TextLayout( line, testFont,
                          g2.getFontRenderContext() );
        AffineTransform at = new AffineTransform();
        g2.draw( tlo.getOutline( at ));
    }

    /// ABP - restore old tform
    g2.setTransform ( oldTx );

}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public void paintComponent(Graphics g) {
    updateSizes();
    Graphics2D g2d = (Graphics2D) g;
    chatDisplay.removeOldMessages();
    Dimension size = getSize();

    if (freeColClient.isMapEditor()) {
        if (hasMap()) {
            mapViewer.displayMap(g2d);
        } else {
            g2d.setColor(Color.BLACK);
            g2d.fillRect(0, 0, size.width, size.height);
        }

    } else if (freeColClient.isInGame() && hasMap()) {
        mapViewer.displayMap(g2d);

        // Grey out the map if it is not my turn (and a multiplayer game).
        if (!freeColClient.currentPlayerIsMyPlayer()) {
            if (greyLayer == null) {
                greyLayer = new GrayLayer(freeColClient);
            }
            if (greyLayer.getParent() == null) {
                add(greyLayer, JLayeredPane.DRAG_LAYER);
            }
            greyLayer.setBounds(0, 0, size.width, size.height);
            greyLayer.setPlayer(freeColClient.getGame().getCurrentPlayer());
        } else {
            if (greyLayer != null && greyLayer.getParent() != null) {
                removeFromCanvas(greyLayer);
            }
        }

        // paint chat display
        chatDisplay.display(g2d, mapViewer.getImageLibrary(), size);

    } else {
        /* main menu */
        // TODO: Check if its right to sometimes have an unfocused map
        //       ingame and end up here after clicking outside map.
        final String bgImageKey = "image.flavor.Canvas.map";
        if (ResourceManager.hasImageResource(bgImageKey)) {
            // Get the background without scaling, to avoid wasting
            // memory needlessly keeping an unbounded number of rescaled
            // versions of the largest image in FreeCol, forever.
            final Image bgImage = ResourceManager.getImage(bgImageKey);
            // Draw background image with scaling.
            g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                RenderingHints.VALUE_INTERPOLATION_BILINEAR);
            g2d.drawImage(bgImage, 0, 0, size.width, size.height, this);
            String versionStr = "v. " + FreeCol.getVersion();
            Font oldFont = g2d.getFont();
            Color oldColor = g2d.getColor();
            Font newFont = oldFont.deriveFont(Font.BOLD);
            TextLayout layout = new TextLayout(versionStr, newFont,
                g2d.getFontRenderContext());
            Rectangle2D bounds = layout.getBounds();
            float x = size.width - (float) bounds.getWidth() - 5;
            float y = size.height - (float) bounds.getHeight();
            g2d.setColor(Color.white);
            layout.draw(g2d, x, y);
            g2d.setFont(oldFont);
            g2d.setColor(oldColor);
        } else {
            g2d.setColor(Color.BLACK);
            g2d.fillRect(0, 0, size.width, size.height);
        }
    }
}
 

import java.awt.Graphics2D; //导入方法依赖的package包/类
private static void runTest() {
    im = new BufferedImage(W, H, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = im.createGraphics();
    g2d.setColor(Color.white);
    g2d.fillRect(0, 0, W, H);
    g2d.setColor(Color.black);
    g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                         RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
    char[] chs = "Sample Text.".toCharArray();
    int len = chs.length;

    int x = 50, y = 100;

    FontRenderContext frc = g2d.getFontRenderContext();
    Font plain = new Font("Serif", Font.PLAIN, 48);
    GlyphVector pgv = plain.layoutGlyphVector(frc, chs, 0, len, 0);
    g2d.setFont(plain);
    g2d.drawChars(chs, 0, len, x, y); y +=50;

    g2d.drawGlyphVector(pgv, x, y); y += 50;
    Rectangle2D plainStrBounds = plain.getStringBounds(chs, 0, len, frc);
    Rectangle2D plainGVBounds = pgv.getLogicalBounds();
    Font bold = new Font("Serif", Font.BOLD, 48);
    GlyphVector bgv = bold.layoutGlyphVector(frc, chs, 0, len, 0);
    Rectangle2D boldStrBounds = bold.getStringBounds(chs, 0, len, frc);
    Rectangle2D boldGVBounds = bgv.getLogicalBounds();
    g2d.setFont(bold);
    g2d.drawChars(chs, 0, len, x, y); y +=50;
    g2d.drawGlyphVector(bgv, x, y);
    System.out.println("Plain String Bounds = " + plainStrBounds);
    System.out.println("Bold String Bounds = " + boldStrBounds);
    System.out.println("Plain GlyphVector Bounds = " + plainGVBounds);
    System.out.println("Bold GlyphVector Bounds = " + boldGVBounds);
    if (!plainStrBounds.equals(boldStrBounds) &&
         plainGVBounds.equals(boldGVBounds))
    {
        System.out.println("Test failed: Plain GV bounds same as Bold");
        if (!interactive) {
            throw new RuntimeException("Plain GV bounds same as Bold");
        }
    }

}