Examples of ColorConvertOp

ae.java.awt.image.ColorConvertOp
This class performs a pixel-by-pixel color conversion of the data in the source image. The resulting color values are scaled to the precision of the destination image. Color conversion can be specified via an array of ColorSpace objects or an array of ICC_Profile objects.
If the source is a BufferedImage with premultiplied alpha, the color components are divided by the alpha component before color conversion. If the destination is a BufferedImage with premultiplied alpha, the color components are multiplied by the alpha component after conversion. Rasters are treated as having no alpha channel, i.e. all bands are color bands.
If a RenderingHints object is specified in the constructor, the color rendering hint and the dithering hint may be used to control color conversion.
Note that Source and Destination may be the same object.
@see ae.java.awt.RenderingHints#KEY_COLOR_RENDERING @see ae.java.awt.RenderingHints#KEY_DITHERING
com.google.code.appengine.awt.image.ColorConvertOp
java.awt.image.ColorConvertOp
This class performs a pixel-by-pixel color conversion of the data in the source image. The resulting color values are scaled to the precision of the destination image. Color conversion can be specified via an array of ColorSpace objects or an array of ICC_Profile objects.
If the source is a BufferedImage with premultiplied alpha, the color components are divided by the alpha component before color conversion. If the destination is a BufferedImage with premultiplied alpha, the color components are multiplied by the alpha component after conversion. Rasters are treated as having no alpha channel, i.e. all bands are color bands.
If a RenderingHints object is specified in the constructor, the color rendering hint and the dithering hint may be used to control color conversion.
Note that Source and Destination may be the same object.
@see java.awt.RenderingHints#KEY_COLOR_RENDERING @see java.awt.RenderingHints#KEY_DITHERING

Examples of java.awt.image.ColorConvertOp

    g.draw(new Line2D.Double(0, 0, 20, 20));
    
    ICC_Profile[] profile = new ICC_Profile[] {ICC_Profile.getInstance(ColorSpace.CS_LINEAR_RGB),
                                               ICC_Profile.getInstance(ColorSpace.CS_CIEXYZ),
                                               ICC_Profile.getInstance(ColorSpace.CS_sRGB)};
    ColorConvertOp op = new ColorConvertOp(profile, null);
    
    try
    {
      BufferedImage dst = op.filter(img, null);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_BYTE_GRAY);
      dst = op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_GRAY);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);

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Examples of java.awt.image.ColorConvertOp

    harness.checkPoint("getPoint2D");
    
    //  This is a simple test; the Op should not change the
    // geometry of the raster
    
    ColorConvertOp op = new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_sRGB),
                                           null);
    Point2D dest = null;
    dest = op.getPoint2D(new Point2D.Double(3, 3), dest);
    harness.check(dest, new Point2D.Double(3, 3));
  }

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Examples of java.awt.image.ColorConvertOp

  {
    harness.checkPoint("createCompatibleDestImage");


    // Simple test
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorConvertOp op = new ColorConvertOp(cs, null);
    
    BufferedImage img = new BufferedImage(25, 40, BufferedImage.TYPE_INT_RGB);
    BufferedImage dest = op.createCompatibleDestImage(img, img.getColorModel());
    
    harness.check(dest.getHeight(), 40);
    harness.check(dest.getWidth(), 25);
    harness.check(dest.getColorModel(), img.getColorModel());
    harness.check(dest.getSampleModel().getTransferType(),
                  img.getColorModel().getTransferType());
    
    // Try a different colour model
    img = new BufferedImage(25, 40, BufferedImage.TYPE_BYTE_GRAY);
    DirectColorModel cm = new DirectColorModel(32, 0x00ff0000, 0x0000ff00, 0x000000ff);
    dest = op.createCompatibleDestImage(img, cm);
    
    harness.check(dest.getHeight(), 40);
    harness.check(dest.getWidth(), 25);
    harness.check(dest.getColorModel(), cm);
    harness.check(dest.getSampleModel().getTransferType(), cm.getTransferType());


    op = new ColorConvertOp(null);
    dest = op.createCompatibleDestImage(img, img.getColorModel());
    harness.check(dest.getHeight(), 40);
    harness.check(dest.getWidth(), 25);
    harness.check(dest.getColorModel(), img.getColorModel());
    harness.check(dest.getSampleModel().getTransferType(),
                  img.getColorModel().getTransferType());


    // ColorConvertOp's ColorModel can be null, or createCompatibleDestImage's
    // ColorModel can be null, but not both
    try
    {
      dest = op.createCompatibleDestImage(img, null);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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Examples of java.awt.image.ColorConvertOp

  
  private void colorModelTest(TestHarness harness, int cspace, int cspace2)
  {
    ColorSpace cs;
    ColorSpace cs2;
    ColorConvertOp op;
    
    if (cspace == -1)
      {
        cs2 = ColorSpace.getInstance(cspace2);
        op = new ColorConvertOp(cs2, null);
      }
    else
      {
        cs = ColorSpace.getInstance(cspace);
        cs2 = ColorSpace.getInstance(cspace2);
        op = new ColorConvertOp(cs, cs2, null);
      }


    int[] types = {BufferedImage.TYPE_INT_RGB,
                   BufferedImage.TYPE_INT_ARGB,
                   BufferedImage.TYPE_INT_ARGB_PRE,
                   BufferedImage.TYPE_3BYTE_BGR,
                   BufferedImage.TYPE_4BYTE_ABGR,
                   BufferedImage.TYPE_4BYTE_ABGR_PRE,
                   BufferedImage.TYPE_USHORT_565_RGB,
                   BufferedImage.TYPE_USHORT_555_RGB,
                   BufferedImage.TYPE_BYTE_GRAY,
                   BufferedImage.TYPE_USHORT_GRAY};
    // Skipped types that are not implemented yet:
    // TYPE_CUSTOM, TYPE_INT_BGR, TYPE_BYTE_BINARY, TYPE_BYTE_INDEXED


    for (int i = 0; i < types.length; i++)
      {
        int type = types[i];
        if (cspace == -1)
          harness.checkPoint("colorspace " + cspace2  + ", type: " + type);
        else
          harness.checkPoint("src colorspace " + cspace + ", dest colorspace " + cspace2 + ", type: " + type);
        
        BufferedImage img = new BufferedImage(25, 40, type);
        BufferedImage dest = op.createCompatibleDestImage(img, null);
        dest = op.createCompatibleDestImage(img, null);
        
        // Standard check of common properties
        harness.check(dest.isAlphaPremultiplied(), img.isAlphaPremultiplied());
        harness.check(dest.getSampleModel() instanceof PixelInterleavedSampleModel);

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Examples of java.awt.image.ColorConvertOp

  }
  
  
  private void profileTest(TestHarness harness, ICC_Profile[] profile)
  {
    ColorConvertOp op = new ColorConvertOp(profile, null);


    int[] types = {BufferedImage.TYPE_INT_RGB,
                   BufferedImage.TYPE_INT_ARGB,
                   BufferedImage.TYPE_INT_ARGB_PRE,
                   BufferedImage.TYPE_3BYTE_BGR,
                   BufferedImage.TYPE_4BYTE_ABGR,
                   BufferedImage.TYPE_4BYTE_ABGR_PRE,
                   BufferedImage.TYPE_USHORT_565_RGB,
                   BufferedImage.TYPE_USHORT_555_RGB,
                   BufferedImage.TYPE_BYTE_GRAY,
                   BufferedImage.TYPE_USHORT_GRAY};
    // Skipped types that are not implemented yet:
    // TYPE_CUSTOM, TYPE_INT_BGR, TYPE_BYTE_BINARY, TYPE_BYTE_INDEXED


    for (int i = 0; i < types.length; i++)
      {
        int type = types[i];
        harness.checkPoint("profile " + profile[profile.length-1].getClass() + ", type: " + type);
        
        BufferedImage img = new BufferedImage(25, 40, type);
        BufferedImage dest = op.createCompatibleDestImage(img, null);
        dest = op.createCompatibleDestImage(img, null);
        
        harness.check(dest.getColorModel() instanceof ComponentColorModel);
        harness.check(dest.getSampleModel() instanceof PixelInterleavedSampleModel);
        harness.check(dest.getColorModel().isCompatibleSampleModel(dest.getSampleModel()));
        harness.check(dest.getColorModel().getTransferType(), DataBuffer.TYPE_BYTE);

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Examples of java.awt.image.ColorConvertOp

    ColorSpace dstCs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
    RenderingHints hints = new RenderingHints(RenderingHints.KEY_DITHERING,
                                              RenderingHints.VALUE_DITHER_ENABLE);
    hints.put(RenderingHints.KEY_COLOR_RENDERING,
              RenderingHints.VALUE_COLOR_RENDER_QUALITY);
    ColorConvertOp op = new ColorConvertOp(srcCs, dstCs, hints);
    
    harness.check(op.getICC_Profiles(), null);
    harness.check(op.getRenderingHints(), hints);


    
    // Null arguments
    op = new ColorConvertOp(srcCs, dstCs, null);
    
    harness.check(op.getICC_Profiles(), null);
    harness.check(op.getRenderingHints(), null);


    try
    {
      op = new ColorConvertOp(null, dstCs, null);
      harness.check(false);
    }
    catch (NullPointerException e)
    {
      harness.check(true);
    }
    
    try
    {
      op = new ColorConvertOp(srcCs, null, null);
      harness.check(false);
    }
    catch (NullPointerException e)
    {
      harness.check(true);
    }
    
    try
    {
      op = new ColorConvertOp(null, null, null);
      harness.check(false);
    }
    catch (NullPointerException e)
    {
      harness.check(true);

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Examples of java.awt.image.ColorConvertOp

    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    RenderingHints hints = new RenderingHints(RenderingHints.KEY_DITHERING,
                                              RenderingHints.VALUE_DITHER_ENABLE);
    hints.put(RenderingHints.KEY_COLOR_RENDERING,
              RenderingHints.VALUE_COLOR_RENDER_QUALITY);
    ColorConvertOp op = new ColorConvertOp(cs, hints);
    
    harness.check(op.getICC_Profiles(), null);
    harness.check(op.getRenderingHints(), hints);
    
    // Null arguments
    op = new ColorConvertOp(cs, null);
    
    harness.check(op.getICC_Profiles(), null);
    harness.check(op.getRenderingHints(), null);


    try
    {
      op = new ColorConvertOp((ColorSpace)null, (RenderingHints)null);
      harness.check(false);
    }
    catch (NullPointerException e)
    {
      harness.check(true);

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Examples of java.awt.image.ColorConvertOp

    
    RenderingHints hints = new RenderingHints(RenderingHints.KEY_DITHERING,
                                              RenderingHints.VALUE_DITHER_ENABLE);
    hints.put(RenderingHints.KEY_COLOR_RENDERING,
              RenderingHints.VALUE_COLOR_RENDER_QUALITY);
    ColorConvertOp op = new ColorConvertOp(profile, hints);
    
    // Work around lack of ICC_Profile.equals()
    harness.check(Arrays.equals(op.getICC_Profiles(), profile));
    harness.check(op.getRenderingHints(), hints);


    // Empty or too few profiles are not caught until filter(), so they are
    // allowed here
    try
    {
      op = new ColorConvertOp(new ICC_Profile[0], null);
      harness.check(Arrays.equals(op.getICC_Profiles(), new ICC_Profile[0]));
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    try
    {
      profile = new ICC_Profile[]{ICC_Profile.getInstance(ColorSpace.CS_LINEAR_RGB)};
      op = new ColorConvertOp(profile, null);
      harness.check(Arrays.equals(op.getICC_Profiles(), profile));
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    // Null arguments
    op = new ColorConvertOp(profile, null);
    
    // Work around lack of ICC_Profile.equals()
    harness.check(Arrays.equals(op.getICC_Profiles(), profile));
    harness.check(op.getRenderingHints(), null);


    try
    {
      op = new ColorConvertOp((ICC_Profile[])null, null);
      harness.check(false);
    }
    catch (NullPointerException e)
    {
      harness.check(true);

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Examples of java.awt.image.ColorConvertOp

    // Simple test
    RenderingHints hints = new RenderingHints(RenderingHints.KEY_DITHERING,
                                              RenderingHints.VALUE_DITHER_ENABLE);
    hints.put(RenderingHints.KEY_COLOR_RENDERING,
              RenderingHints.VALUE_COLOR_RENDER_QUALITY);
    ColorConvertOp op = new ColorConvertOp(hints);
    
    harness.check(op.getICC_Profiles(), null);
    harness.check(op.getRenderingHints(), hints);
    
    // Null arguments
    op = new ColorConvertOp(null);
    
    harness.check(op.getICC_Profiles(), null);
    harness.check(op.getRenderingHints(), null);
  }

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Examples of java.awt.image.ColorConvertOp

    Graphics2D g = (Graphics2D)img.getGraphics();
    g.draw(new Line2D.Double(0, 0, 20, 20));
    
    ColorSpace cs1 = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorSpace cs2 = ColorSpace.getInstance(ColorSpace.CS_GRAY);
    ColorConvertOp op = new ColorConvertOp(cs1, cs2, null);
    WritableRaster raster = img.getRaster();
    
    // Src and dst rasters cannot be the same (different from 
    // filter(BufferedImage, BufferedImage) )
    try
    {
      op.filter(raster, raster);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    
    // Src and dst are different sizes (not allowed, unlike some other Ops)
    BufferedImage dst = new BufferedImage(30, 40, BufferedImage.TYPE_BYTE_GRAY);
    WritableRaster raster2 = dst.getRaster();
    try
    {
      op.filter(raster, raster2);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    
    // Null destination
    WritableRaster dstRaster = op.filter(raster, null);
    harness.check(dstRaster.getTransferType(), op.createCompatibleDestRaster(raster).getTransferType());
    harness.check(dstRaster.getNumBands(), op.createCompatibleDestRaster(raster).getNumBands());
    harness.check(dstRaster.getNumDataElements(), op.createCompatibleDestRaster(raster).getNumDataElements());


    // Incompatible constructor (ie, not enough information)
    op = new ColorConvertOp(null);
    try
    {
      op.filter(raster, null);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    
    op = new ColorConvertOp(cs1, null);
    try
    {
      op.filter(raster, null);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    
    // Destination raster incompatible with defined conversion;
    // ie, with this conversion, cs2 is TYPE_GRAY thus a dest raster of
    // TYPE_RGB will have the wrong number of data elements
    op = new ColorConvertOp(cs1, cs2, null);
    dstRaster = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB).getRaster();
    
    try
    {
      op.filter(raster, dstRaster);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    
    // Also true if source raster is incompatible
    raster = new BufferedImage(20, 20, BufferedImage.TYPE_BYTE_GRAY).getRaster();
    try
    {
      op.filter(raster, raster2);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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