Examples of java.awt.image.ComponentColorModel.coerceData()

java.awt.image.ComponentColorModel.coerceData()

Forces the raster data to match the state specified in the isAlphaPremultiplied variable, assuming the data is currently correctly described by this ColorModel. It may multiply or divide the color raster data by alpha, or do nothing if the data is in the correct state. If the data needs to be coerced, this method also returns an instance of this ColorModel with the isAlphaPremultiplied flag set appropriately. Since ColorModel can be subclassed, subclasses inherit the implementation of this method and if they don't override it then they throw an exception if they use an unsupported transferType. @throws NullPointerException if raster is null and data coercion is required. @throws UnsupportedOperationException if the transfer type of this ComponentColorModel is not one of the supported transfer types: DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT, or DataBuffer.TYPE_DOUBLE.

                                                      DataBuffer.TYPE_BYTE);
    
    harness.check(ccm.isAlphaPremultiplied(), false);
    
    // Check to ensure data is not changed needlessly
    ColorModel resultCM = ccm.coerceData(rast, false);
    harness.check(resultCM.getClass().equals(ccm.getClass()));
    harness.check(resultCM.isAlphaPremultiplied(), false);
    harness.check(ccm, resultCM);
    for (int x = 0; x < 50; x++)
      for (int y = 0; y < 50; y++)

            else
              harness.check(rast.getSampleFloat(x, y, b), (x+y));
          }
    
    // Coerce data into a premultiplied state
    resultCM = ccm.coerceData(rast, true);
    
    // Ensure we're still using the same color model!
    harness.check(resultCM.getClass().equals(ccm.getClass()));
    harness.check(resultCM.isAlphaPremultiplied(), true);
    harness.check(! (ccm == resultCM));     // object is cloned...

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.