java.awt.AlphaComposite Java Examples

The following examples show how to use java.awt.AlphaComposite. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ImgUtils.java    From TranskribusCore with GNU General Public License v3.0 7 votes vote down vote up
public static File killBorder(BufferedImage baseImage, Polygon p, String outPng) throws IOException {		
       // Creates a background BufferedImage with an Alpha layer so that AlphaCompositing works
   	final int height = baseImage.getHeight();
	final int width = baseImage.getWidth();
       BufferedImage bg = new BufferedImage (width, height, BufferedImage.TYPE_INT_ARGB);
       // Sets AlphaComposite to type SRC_OUT with a transparency of 100%
       // Convert BufferedImage to G2D. Effects applied to G2D are applied to the original BufferedImage automatically.
       Graphics2D g2d = bg.createGraphics();
       //create Area with dimension of the image to be cropped
       Area wholeImageArea = new Area(new Rectangle(width, height));
       //create Area from given polygon 
       Area psArea = new Area(p);
       //invert the printspace area
       wholeImageArea.subtract(psArea);
       // Covers the whole image to provide a layer to be cropped, revealing the imported image underneath
       g2d.fill(wholeImageArea);
       g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OUT, 1.0f));
       // Draws the imported image into the background BufferedImage (bg).
       g2d.drawImage(baseImage, 0, 0, null);
       // Writes the image to a PNG
       if(!outPng.endsWith(".png")){
       	outPng += ".png";
       }
       File out = new File(outPng);
       if(!ImageIO.write(bg, "png", out)){
       	//should not happen with png
       	throw new IOException("No appropriate writer was found!");
       }
       return out;        
}
 
Example #2
Source File: IncorrectClipSurface2SW.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up
private static void draw(Shape clip, Shape to, Image vi, BufferedImage bi,
                         int scale) {
    Graphics2D big = bi.createGraphics();
    big.setComposite(AlphaComposite.Src);
    big.setClip(clip);
    Rectangle toBounds = to.getBounds();
    int x1 = toBounds.x;

    int y1 = toBounds.y;
    int x2 = x1 + toBounds.width;
    int y2 = y1 + toBounds.height;
    big.drawImage(vi, x1, y1, x2, y2, 0, 0, toBounds.width / scale,
                  toBounds.height / scale, null);
    big.dispose();
    vi.flush();
}
 
Example #3
Source File: TranslucentButton.java    From filthy-rich-clients with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up
public void paint(Graphics g) {
       // Create an image for the button graphics if necessary
       if (buttonImage == null || buttonImage.getWidth() != getWidth() ||
               buttonImage.getHeight() != getHeight()) {
           buttonImage = getGraphicsConfiguration().
                   createCompatibleImage(getWidth(), getHeight());
       }
       Graphics gButton = buttonImage.getGraphics();
       gButton.setClip(g.getClip());
       
       //  Have the superclass render the button for us
       super.paint(gButton);
       
       // Make the graphics object sent to this paint() method translucent
Graphics2D g2d  = (Graphics2D)g;
AlphaComposite newComposite = 
    AlphaComposite.getInstance(AlphaComposite.SRC_OVER, .5f);
g2d.setComposite(newComposite);
       
       // Copy the button's image to the destination graphics, translucently
       g2d.drawImage(buttonImage, 0, 0, null);
   }
 
Example #4
Source File: Plot.java    From openstock with GNU General Public License v3.0 6 votes vote down vote up
/**
 * Draws the background image (if there is one) aligned within the
 * specified area.
 *
 * @param g2  the graphics device.
 * @param area  the area.
 *
 * @see #getBackgroundImage()
 * @see #getBackgroundImageAlignment()
 * @see #getBackgroundImageAlpha()
 */
public void drawBackgroundImage(Graphics2D g2, Rectangle2D area) {
    if (this.backgroundImage == null) {
        return;  // nothing to do
    }
    Composite savedComposite = g2.getComposite();
    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
            this.backgroundImageAlpha));
    Rectangle2D dest = new Rectangle2D.Double(0.0, 0.0,
            this.backgroundImage.getWidth(null),
            this.backgroundImage.getHeight(null));
    Align.align(dest, area, this.backgroundImageAlignment);
    Shape savedClip = g2.getClip();
    g2.clip(area);
    g2.drawImage(this.backgroundImage, (int) dest.getX(),
            (int) dest.getY(), (int) dest.getWidth() + 1,
            (int) dest.getHeight() + 1, null);
    g2.setClip(savedClip);
    g2.setComposite(savedComposite);
}
 
Example #5
Source File: UnmanagedDrawImagePerformance.java    From jdk8u-dev-jdk with GNU General Public License v2.0 6 votes vote down vote up
private static long test(Image bi, Image vi, AffineTransform atfm) {
    final Polygon p = new Polygon();
    p.addPoint(0, 0);
    p.addPoint(SIZE, 0);
    p.addPoint(0, SIZE);
    p.addPoint(SIZE, SIZE);
    p.addPoint(0, 0);
    Graphics2D g2d = (Graphics2D) vi.getGraphics();
    g2d.clip(p);
    g2d.transform(atfm);
    g2d.setComposite(AlphaComposite.SrcOver);
    final long start = System.nanoTime();
    g2d.drawImage(bi, 0, 0, null);
    final long time = System.nanoTime() - start;
    g2d.dispose();
    return time;
}
 
Example #6
Source File: PdfGraphics2D.java    From itext2 with GNU Lesser General Public License v3.0 6 votes vote down vote up
/**
* Method contributed by Alexej Suchov
   * @see Graphics2D#setComposite(Composite)
   */
  public void setComposite(Composite comp) {
      
if (comp instanceof AlphaComposite) {

	AlphaComposite composite = (AlphaComposite) comp;

	if (composite.getRule() == 3) {

		alpha = composite.getAlpha();
		this.composite = composite;

		if (realPaint != null && (realPaint instanceof Color)) {

			Color c = (Color) realPaint;
			paint = new Color(c.getRed(), c.getGreen(), c.getBlue(),
					(int) (c.getAlpha() * alpha));
		}
		return;
	}
}

this.composite = comp;
alpha = 1.0F;

  }
 
Example #7
Source File: PeekMetrics.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up
/**
 * Record information about drawing done
 * with the supplied <code>Composite</code>.
 */
private void checkAlpha(Composite composite) {

    if (composite instanceof AlphaComposite) {
        AlphaComposite alphaComposite = (AlphaComposite) composite;
        float alpha = alphaComposite.getAlpha();
        int rule = alphaComposite.getRule();

        if (alpha != 1.0
                || (rule != AlphaComposite.SRC
                    && rule != AlphaComposite.SRC_OVER)) {

            mHasCompositing = true;
        }

    } else {
        mHasCompositing = true;
    }

}
 
Example #8
Source File: Treeline.java    From TrakEM2 with GNU General Public License v3.0 6 votes vote down vote up
@Override
public void paintData(final Graphics2D g, final Rectangle srcRect,
		final Tree<Float> tree, final AffineTransform to_screen, final Color cc,
		final Layer active_layer) {
	if (null == this.parent) return; // doing it here for less total cost
	if (0 == this.r && 0 == parent.getData()) return;

	// Two transformations, but it's only 4 points each and it's necessary
	//final Polygon segment = getSegment();
	//if (!tree.at.createTransformedShape(segment).intersects(srcRect)) return Node.FALSE;
	//final Shape shape = to_screen.createTransformedShape(segment);
	final Shape shape = to_screen.createTransformedShape(getSegment());
	final Composite c = g.getComposite();
	final float alpha = tree.getAlpha();
	g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha > 0.4f ? 0.4f : alpha));
	g.setColor(cc);
	g.fill(shape);
	g.setComposite(c);
	g.draw(shape); // in Tree's composite mode (such as an alpha)
}
 
Example #9
Source File: BufferedContext.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up
private void setComposite(Composite comp, int flags) {
    // assert rq.lock.isHeldByCurrentThread();
    if (comp instanceof AlphaComposite) {
        AlphaComposite ac = (AlphaComposite)comp;
        rq.ensureCapacity(16);
        buf.putInt(SET_ALPHA_COMPOSITE);
        buf.putInt(ac.getRule());
        buf.putFloat(ac.getAlpha());
        buf.putInt(flags);
    } else if (comp instanceof XORComposite) {
        int xorPixel = ((XORComposite)comp).getXorPixel();
        rq.ensureCapacity(8);
        buf.putInt(SET_XOR_COMPOSITE);
        buf.putInt(xorPixel);
    } else {
        throw new InternalError("not yet implemented");
    }
}
 
Example #10
Source File: HighlightedButton.java    From filthy-rich-clients with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up
/**
 * Creates a new instance of HighlightedButton
 */
public HighlightedButton(String label) {
    super(label);
    
    // Get the Graphics for the image
    Graphics2D g2d = highlight.createGraphics();
    
    // Erase the image with a transparent background
    g2d.setComposite(AlphaComposite.Clear);
    g2d.fillRect(0, 0, HIGHLIGHT_SIZE, HIGHLIGHT_SIZE);
    g2d.setComposite(AlphaComposite.SrcOver);
    
    // Draw the highlight
    Point2D center = new Point2D.Float((float)HIGHLIGHT_SIZE / 2.0f,
            (float)HIGHLIGHT_SIZE / 2.0f);
    float radius = (float)HIGHLIGHT_SIZE / 2.0f;
    float[] dist = {0.0f, .85f};
    Color[] colors = {Color.white, new Color(255, 255, 255, 0)};
    RadialGradientPaint paint = new RadialGradientPaint(center, radius,
            dist, colors);
    g2d.setPaint(paint);
    g2d.fillOval(0, 0, HIGHLIGHT_SIZE, HIGHLIGHT_SIZE);
    g2d.dispose();
}
 
Example #11
Source File: DropShadowDemo.java    From filthy-rich-clients with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up
public static BufferedImage createDropShadow(BufferedImage image,
        int size) {
    BufferedImage shadow = new BufferedImage(
        image.getWidth() + 4 * size,
        image.getHeight() + 4 * size,
        BufferedImage.TYPE_INT_ARGB);
    
    Graphics2D g2 = shadow.createGraphics();
    g2.drawImage(image, size * 2, size * 2, null);
    
    g2.setComposite(AlphaComposite.SrcIn);
    g2.setColor(Color.BLACK);
    g2.fillRect(0, 0, shadow.getWidth(), shadow.getHeight());       
    
    g2.dispose();
    
    shadow = getGaussianBlurFilter(size, true).filter(shadow, null);
    shadow = getGaussianBlurFilter(size, false).filter(shadow, null);
    
    return shadow;
}
 
Example #12
Source File: RenderTests.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up
private TexturePaint makeTexturePaint(int size, boolean alpha) {
    int s2 = size / 2;
    int type =
        alpha ? BufferedImage.TYPE_INT_ARGB : BufferedImage.TYPE_INT_RGB;
    BufferedImage img = new BufferedImage(size, size, type);
    Color[] colors = makeGradientColors(4, alpha);
    Graphics2D g2d = img.createGraphics();
    g2d.setComposite(AlphaComposite.Src);
    g2d.setColor(colors[0]);
    g2d.fillRect(0, 0, s2, s2);
    g2d.setColor(colors[1]);
    g2d.fillRect(s2, 0, s2, s2);
    g2d.setColor(colors[3]);
    g2d.fillRect(0, s2, s2, s2);
    g2d.setColor(colors[2]);
    g2d.fillRect(s2, s2, s2, s2);
    g2d.dispose();
    Rectangle2D bounds = new Rectangle2D.Float(0, 0, size, size);
    return new TexturePaint(img, bounds);
}
 
Example #13
Source File: DefaultPolarItemRenderer.java    From buffer_bci with GNU General Public License v3.0 6 votes vote down vote up
/**
 * Creates a new instance of DefaultPolarItemRenderer
 */
public DefaultPolarItemRenderer() {
    this.seriesFilled = new BooleanList();
    this.drawOutlineWhenFilled = true;
    this.fillComposite = AlphaComposite.getInstance(
            AlphaComposite.SRC_OVER, 0.3f);
    this.useFillPaint = false;     // use item paint for fills by default
    this.legendLine = new Line2D.Double(-7.0, 0.0, 7.0, 0.0);
    this.shapesVisible = true;
    this.connectFirstAndLastPoint = true;
    
    this.toolTipGeneratorList = new ObjectList();
    this.urlGenerator = null;
    this.legendItemToolTipGenerator = null;
    this.legendItemURLGenerator = null;
}
 
Example #14
Source File: ImageInfoReader.java    From WorldGrower with GNU General Public License v3.0 6 votes vote down vote up
private void createAnimation(ImageIds animationImageId, ImageIds imageId, int numberOfFrames) {
	List<Image> images = new ArrayList<>();
   	for(int i=0; i<numberOfFrames; i++) {
   		BufferedImage newImage = new BufferedImage(48, 48, BufferedImage.TYPE_INT_ARGB);
   		Graphics2D g2 = (Graphics2D) newImage.getGraphics();
   		Image image = idToImages.get(imageId).get(0);
   		g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.1f * i));
   		g2.drawImage(image, 0, 0, null);
   		
   		g2.dispose();
   		
   		images.add(newImage);
   	}
   	
   	idToImages.put(animationImageId, images);
}
 
Example #15
Source File: Plot.java    From buffer_bci with GNU General Public License v3.0 6 votes vote down vote up
/**
 * Draws the background image (if there is one) aligned within the
 * specified area.
 *
 * @param g2  the graphics device.
 * @param area  the area.
 *
 * @see #getBackgroundImage()
 * @see #getBackgroundImageAlignment()
 * @see #getBackgroundImageAlpha()
 */
public void drawBackgroundImage(Graphics2D g2, Rectangle2D area) {
    if (this.backgroundImage == null) {
        return;  // nothing to do
    }
    Composite savedComposite = g2.getComposite();
    g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
            this.backgroundImageAlpha));
    Rectangle2D dest = new Rectangle2D.Double(0.0, 0.0,
            this.backgroundImage.getWidth(null),
            this.backgroundImage.getHeight(null));
    Align.align(dest, area, this.backgroundImageAlignment);
    Shape savedClip = g2.getClip();
    g2.clip(area);
    g2.drawImage(this.backgroundImage, (int) dest.getX(),
            (int) dest.getY(), (int) dest.getWidth() + 1,
            (int) dest.getHeight() + 1, null);
    g2.setClip(savedClip);
    g2.setComposite(savedComposite);
}
 
Example #16
Source File: ImageBorderWizard.java    From CodenameOne with GNU General Public License v2.0 6 votes vote down vote up
public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
    g.setColor(getColor(colorA));
    Graphics2D g2d = (Graphics2D)g;
    g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_NORMALIZE);
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, get(opacity) / 255.0f));

    RoundRectangle2D rr = new RoundRectangle2D.Float(x, y, width - 1, height - 1, get(arcWidth), get(arcHeight));
    g2d.setPaint(new GradientPaint(x + width / 2, y, getColor(colorA), x + width / 2, y + height, getColor(colorB)));
    g2d.fill(rr);
    if(get(thickness) > 0) {
        g2d.setPaint(new GradientPaint(x + width / 2, y, getColor(colorC), x + width / 2, y + height, getColor(colorD)));
        g2d.setStroke(new BasicStroke(get(thickness)));
        g2d.draw(rr);
    }
}
 
Example #17
Source File: PeekMetrics.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up
/**
 * Record information about drawing done
 * with the supplied <code>Composite</code>.
 */
private void checkAlpha(Composite composite) {

    if (composite instanceof AlphaComposite) {
        AlphaComposite alphaComposite = (AlphaComposite) composite;
        float alpha = alphaComposite.getAlpha();
        int rule = alphaComposite.getRule();

        if (alpha != 1.0
                || (rule != AlphaComposite.SRC
                    && rule != AlphaComposite.SRC_OVER)) {

            mHasCompositing = true;
        }

    } else {
        mHasCompositing = true;
    }

}
 
Example #18
Source File: ImageTests.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up
public void modifyTest(TestEnvironment env) {
    int size = env.getIntValue(sizeList);
    Image src = tsit.getImage(env, size, size);
    Graphics g = src.getGraphics();
    if (hasGraphics2D) {
        ((Graphics2D) g).setComposite(AlphaComposite.Src);
    }
    if (size == 1) {
        g.setColor(colorsets[transparency][4]);
        g.fillRect(0, 0, 1, 1);
    } else {
        int mid = size/2;
        g.setColor(colorsets[transparency][0]);
        g.fillRect(0, 0, mid, mid);
        g.setColor(colorsets[transparency][1]);
        g.fillRect(mid, 0, size-mid, mid);
        g.setColor(colorsets[transparency][2]);
        g.fillRect(0, mid, mid, size-mid);
        g.setColor(colorsets[transparency][3]);
        g.fillRect(mid, mid, size-mid, size-mid);
    }
    g.dispose();
    env.setSrcImage(src);
}
 
Example #19
Source File: CommonGFX.java    From open-ig with GNU Lesser General Public License v3.0 6 votes vote down vote up
/**
 * Initialize the common resources.
 * @param rl the resource locator
 * @return this
 */
public CommonGFX load(ResourceLocator rl) {
	GFXLoader.loadResources(this, rl);
	
	int[] disabled = { 0xFF000000, 0xFF000000, 0, 0, 0xFF000000, 0, 0, 0, 0 };
	disabledPattern = new BufferedImage(3, 3, BufferedImage.TYPE_INT_ARGB);
	disabledPattern.setRGB(0, 0, 3, 3, disabled, 0, 3);

	achievementGrayed = new BufferedImage(achievement.getWidth(), achievement.getHeight(), BufferedImage.TYPE_INT_ARGB);
	Graphics2D g2 = achievementGrayed.createGraphics();
	g2.drawImage(achievement, 0, 0, null);
	g2.setComposite(AlphaComposite.SrcOver.derive(0.5f));
	g2.setColor(Color.BLACK);
	g2.fillRect(0, 0, achievement.getWidth(), achievement.getHeight());
	g2.dispose();

	mediumButton = new GenericMediumButton("/hu/openig/gfx/button_medium.png");
	mediumButtonPressed = new GenericMediumButton("/hu/openig/gfx/button_medium_pressed.png");
	
	return this;
}
 
Example #20
Source File: UnmanagedDrawImagePerformance.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up
private static long test(Image bi, Image vi, AffineTransform atfm) {
    final Polygon p = new Polygon();
    p.addPoint(0, 0);
    p.addPoint(SIZE, 0);
    p.addPoint(0, SIZE);
    p.addPoint(SIZE, SIZE);
    p.addPoint(0, 0);
    Graphics2D g2d = (Graphics2D) vi.getGraphics();
    g2d.clip(p);
    g2d.transform(atfm);
    g2d.setComposite(AlphaComposite.SrcOver);
    final long start = System.nanoTime();
    g2d.drawImage(bi, 0, 0, null);
    final long time = System.nanoTime() - start;
    g2d.dispose();
    return time;
}
 
Example #21
Source File: BlendComposite.java    From gcs with Mozilla Public License 2.0 6 votes vote down vote up
/**
 * Creates a blend composite
 *
 * @param blendMode Desired blend mode
 * @param constantAlpha Constant alpha, must be in the inclusive range
 * [0.0...1.0] or it will be clipped.
 * @return a blend composite.
 */
public static Composite getInstance(BlendMode blendMode, float constantAlpha)
{
    if (constantAlpha < 0)
    {
        LOG.warn("using 0 instead of incorrect Alpha " + constantAlpha);
        constantAlpha = 0;
    }
    else if (constantAlpha > 1)
    {
        LOG.warn("using 1 instead of incorrect Alpha " + constantAlpha);
        constantAlpha = 1;
    }
    if (blendMode == BlendMode.NORMAL)
    {
        return AlphaComposite.getInstance(AlphaComposite.SRC_OVER, constantAlpha);
    }
    else
    {
        return new BlendComposite(blendMode, constantAlpha);
    }
}
 
Example #22
Source File: BusySpinnerPanel.java    From azure-devops-intellij with MIT License 6 votes vote down vote up
@Override
public void paint(Graphics g) {
    super.paint(g);

    // get width and height
    final int width = getWidth();
    final int height = getHeight();

    // Draw 12 lines around the center point in a circle
    int lineLength = Math.min(width, height) / 5;
    int lineWidth = lineLength / 4;
    int cx = width / 2;
    int cy = height / 2;
    Graphics2D g2 = (Graphics2D) g.create();
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2.setStroke(new BasicStroke(lineWidth, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
    g2.setPaint(JBColor.black);
    g2.rotate(Math.PI * rotationAngle / 180, cx, cy);
    for (int i = 0; i < 12; i++) {
        g2.drawLine(cx + lineLength, cy, cx + lineLength * 2, cy);
        g2.rotate(-Math.PI / 6, cx, cy);
        g2.setComposite(AlphaComposite.getInstance(
                AlphaComposite.SRC_OVER, ((11 - i) / 12.0f) * (2.0f / 3.0f)));
    }
    g2.dispose();
}
 
Example #23
Source File: MockComponent.java    From pumpernickel with MIT License 5 votes vote down vote up
/**
 * Creates a MockComponent that resembles the argument component.
 * <P>
 * Note this method will traverse c and its subcomponents and may
 * temporarily change properties of inner components: such as the focused
 * state, the visibility, etc.
 * <P>
 * The goal is of this component is not to mirror the exact state of a
 * component, but rather to provide a sample image of this component in its
 * plain, unmodified, unused state.
 * 
 * @param c
 */
public MockComponent(JComponent c) {
	Dimension preferredSize = c.getPreferredSize();
	Dimension currentSize = c.getSize();

	Dimension d = new Dimension(Math.max(preferredSize.width,
			currentSize.width), Math.max(preferredSize.height,
			currentSize.height));

	if (currentSize.width == 0 || currentSize.height == 0) {
		// if the component isn't visible yet
		c.setSize(d);
		c.doLayout();
	}

	storeState(c);

	image = new BufferedImage(d.width, d.height,
			BufferedImage.TYPE_INT_ARGB);

	Graphics2D g = image.createGraphics();
	g.setComposite(AlphaComposite.Clear);
	g.fillRect(0, 0, d.width, d.height);
	g.setComposite(AlphaComposite.SrcOver);

	c.paint(g);
	g.dispose();
	setPreferredSize(d);
	setMinimumSize(d);
	setMaximumSize(d);
	setOpaque(c.isOpaque());
	setName(c.getName());
	setToolTipText(c.getToolTipText());

	restoreState(c);
}
 
Example #24
Source File: EffectUtils.java    From Java8CN with Apache License 2.0 5 votes vote down vote up
/**
 * Clear a transparent image to 100% transparent
 *
 * @param img The image to clear
 */
static void clearImage(BufferedImage img) {
    Graphics2D g2 = img.createGraphics();
    g2.setComposite(AlphaComposite.Clear);
    g2.fillRect(0, 0, img.getWidth(), img.getHeight());
    g2.dispose();
}
 
Example #25
Source File: CompositeType.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up
/**
 * Return a CompositeType object for the specified AlphaComposite
 * rule.
 */
public static CompositeType forAlphaComposite(AlphaComposite ac) {
    switch (ac.getRule()) {
    case AlphaComposite.CLEAR:
        return Clear;
    case AlphaComposite.SRC:
        if (ac.getAlpha() >= 1.0f) {
            return SrcNoEa;
        } else {
            return Src;
        }
    case AlphaComposite.DST:
        return Dst;
    case AlphaComposite.SRC_OVER:
        if (ac.getAlpha() >= 1.0f) {
            return SrcOverNoEa;
        } else {
            return SrcOver;
        }
    case AlphaComposite.DST_OVER:
        return DstOver;
    case AlphaComposite.SRC_IN:
        return SrcIn;
    case AlphaComposite.DST_IN:
        return DstIn;
    case AlphaComposite.SRC_OUT:
        return SrcOut;
    case AlphaComposite.DST_OUT:
        return DstOut;
    case AlphaComposite.SRC_ATOP:
        return SrcAtop;
    case AlphaComposite.DST_ATOP:
        return DstAtop;
    case AlphaComposite.XOR:
        return AlphaXor;
    default:
        throw new InternalError("Unrecognized alpha rule");
    }
}
 
Example #26
Source File: SWTGraphics2D.java    From openstock with GNU General Public License v3.0 5 votes vote down vote up
/**
 * Sets the current composite.  This implementation currently supports
 * only the {@link AlphaComposite} class.
 *
 * @param comp  the composite (<code>null</code> not permitted).
 */
public void setComposite(Composite comp) {
    if (comp == null) {
        throw new IllegalArgumentException("Null 'comp' argument.");
    }
    this.composite = comp;
    if (comp instanceof AlphaComposite) {
        AlphaComposite acomp = (AlphaComposite) comp;
        int alpha = (int) (acomp.getAlpha() * 0xFF);
        this.gc.setAlpha(alpha);
    }
}
 
Example #27
Source File: SunCompositeContext.java    From jdk8u-dev-jdk with GNU General Public License v2.0 5 votes vote down vote up
public SunCompositeContext(AlphaComposite ac,
                           ColorModel s, ColorModel d)
{
    if (s == null) {
        throw new NullPointerException("Source color model cannot be null");
    }
    if (d == null) {
        throw new NullPointerException("Destination color model cannot be null");
    }
    srcCM = s;
    dstCM = d;
    this.composite = ac;
    this.comptype = CompositeType.forAlphaComposite(ac);
}
 
Example #28
Source File: IncorrectUnmanagedImageSourceOffset.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up
private static void fill(final Image image) {
    final Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setComposite(AlphaComposite.Src);
    for (int i = 0; i < image.getHeight(null); ++i) {
        graphics.setColor(new Color(i, 0, 0));
        graphics.fillRect(0, i, image.getWidth(null), 1);
    }
    graphics.dispose();
}
 
Example #29
Source File: Style.java    From pdfxtk with Apache License 2.0 5 votes vote down vote up
public void setParam(BrowserContext c, Object o, String v) throws ParameterException {
  Style s = (Style) o;
  float transparency = 0.0f;
  if (v != null) {
    try {
      transparency = Float.parseFloat(v);
    } catch (NumberFormatException n) {
      throw new ParameterException("Not a valid transparency value "+v);
    }
    if (transparency < 0.0f || transparency > 1.0f) {
      throw new ParameterException("Not a valid transparency value "+transparency);
    }
  }
  s.composite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, transparency);
}
 
Example #30
Source File: BlitBg.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up
@Override
public void BlitBg(SurfaceData srcData,
                   SurfaceData dstData,
                   Composite comp,
                   Region clip,
                   int bgArgb,
                   int srcx, int srcy,
                   int dstx, int dsty,
                   int width, int height)
{
    ColorModel dstModel = dstData.getColorModel();
    boolean bgHasAlpha = (bgArgb >>> 24) != 0xff;
    if (!dstModel.hasAlpha() && bgHasAlpha) {
        dstModel = ColorModel.getRGBdefault();
    }
    WritableRaster wr =
        dstModel.createCompatibleWritableRaster(width, height);
    boolean isPremult = dstModel.isAlphaPremultiplied();
    BufferedImage bimg =
        new BufferedImage(dstModel, wr, isPremult, null);
    SurfaceData tmpData = BufImgSurfaceData.createData(bimg);
    Color bgColor = new Color(bgArgb, bgHasAlpha);
    SunGraphics2D sg2d = new SunGraphics2D(tmpData, bgColor, bgColor,
                                           defaultFont);
    FillRect fillop = FillRect.locate(SurfaceType.AnyColor,
                                      CompositeType.SrcNoEa,
                                      tmpData.getSurfaceType());
    Blit combineop = Blit.getFromCache(srcData.getSurfaceType(),
                                       CompositeType.SrcOverNoEa,
                                       tmpData.getSurfaceType());
    Blit blitop = Blit.getFromCache(tmpData.getSurfaceType(), compositeType,
                                    dstData.getSurfaceType());
    fillop.FillRect(sg2d, tmpData, 0, 0, width, height);
    combineop.Blit(srcData, tmpData, AlphaComposite.SrcOver, null,
                   srcx, srcy, 0, 0, width, height);
    blitop.Blit(tmpData, dstData, comp, clip,
                0, 0, dstx, dsty, width, height);
}