/* createCompatibleDestRaster.java -- some checks for the
createCompatibleDestRaster() method of the BandCombineOp class.
Copyright (C) 2006 Francis Kung <fkung@redhat.com>
This file is part of Mauve.
Mauve is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
Mauve is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with Mauve; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Tags: JDK1.2
package gnu.testlet.java.awt.image.BandCombineOp;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.awt.Point;
import java.awt.image.BandCombineOp;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
/**
* Checks for the createCompatibleDestRaster method in the
* {@link BandCombineOp} class.
*/
public class createCompatibleDestRaster implements Testlet
{
/**
* Runs the test using the specified harness.
*
* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
basicTest(harness);
test2(harness);
test3(harness);
impossibleTest(harness);
}
private void basicTest(TestHarness harness)
{
harness.checkPoint("createCompatibleDestRaster");
// Simple test
float[][] matrix = new float[][] {new float[] {1, 2, 3},
new float[] {4, 5, 6},
new float[] {7, 8, 9}};
Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 3, new Point(5, 5));
BandCombineOp op = new BandCombineOp(matrix, null);
try
{
Raster dst = op.createCompatibleDestRaster(src);
harness.check(dst.getNumBands(), 3);
harness.check(dst.getHeight(), src.getHeight());
harness.check(dst.getWidth(), src.getWidth());
harness.check(dst.getTransferType(), src.getTransferType());
harness.check(dst.getDataBuffer().getDataType(), src.getDataBuffer().getDataType());
}
catch (IllegalArgumentException e)
{
harness.check(false);
}
// Try a different type
src = Raster.createBandedRaster(DataBuffer.TYPE_BYTE, 25, 40, 3, new Point(5, 5));
try
{
Raster dst = op.createCompatibleDestRaster(src);
harness.check(dst.getTransferType(), src.getTransferType());
harness.check(dst.getDataBuffer().getDataType(), src.getDataBuffer().getDataType());
harness.check(dst.getNumBands(), 3);
}
catch (IllegalArgumentException e)
{
harness.check(false);
}
// This is where things get messy. The Sun API states that "The width of the matrix
// must be equal to the number of bands in the source Raster, optionally plus one. If
// there is one more column in the matrix than the number of bands, there is an implied
// 1 at the end of the vector of band samples representing a pixel. The height of the matrix
// must be equal to the number of bands in the destination", but this is NOT how their
// implementation behaves.
//
// They miss one requirement, however: the number of bands in the source and destination
// rasters must also be equal... which effectively means
// ((width == height) || (width == height + 1)) must be true
// The source (4 bands) is incompatible with the matrix (width = 3)
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 4, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
// The destination raster (3 bands) would be incompatibel with the source (2 bands)
// (the undocumented requirement)
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 1, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
}
// Using a non-square matrix
private void test2(TestHarness harness)
{
// Height still == 3, but width == 4
float[][] matrix = new float[][] {new float[] {1, 2, 3, 1},
new float[] {4, 5, 6, 1},
new float[] {7, 8, 9, 1}};
BandCombineOp op = new BandCombineOp(matrix, null);
// Source has 3 bands, which is the width minus one (uses the implied 1), works
Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 3, new Point(5, 5));
try
{
Raster dst = op.createCompatibleDestRaster(src);
harness.check(dst.getNumBands(), 3);
}
catch (IllegalArgumentException e)
{
harness.check(false);
}
// Source has 4 bands, which is compatible with the matrix (width is 4)
// The destination raster, however, is not compatible with the source (3 vs 4 bands)
// (the undocumented restriction)
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 4, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
// Also incompatible, but this is expected according to the spec
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 2, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
// Also still incompatible
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 5, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
}
// One more test, with a larger matrix
private void test3(TestHarness harness)
{
// Test again, with a different matrix
float[][] matrix = new float[][] {new float[] {1, 2, 3, 1, 5},
new float[] {4, 5, 6, 1, 5},
new float[] {7, 8, 9, 1, 5},
new float[] {1, 2, 3, 4, 5}};
BandCombineOp op = new BandCombineOp(matrix, null);
// Works using the implied 1
Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 4, new Point(5, 5));
try
{
Raster dst = op.createCompatibleDestRaster(src);
harness.check(dst.getNumBands(), 4);
}
catch (IllegalArgumentException e)
{
harness.check(false);
}
// Does not use implied 1; however source and dest would have incompabible bands
// (undocumented restriction)
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 5, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
// Just for completeness
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 3, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 6, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
}
private void impossibleTest(TestHarness harness)
{
// Thus, it would be impossible to create a compatible destination wraster if
// ((width != height) && (width != height + 1))
float[][] matrix = new float[][] {new float[] {1, 2, 3, 1, 5},
new float[] {4, 5, 6, 1, 5},
new float[] {7, 8, 9, 1, 5}};
BandCombineOp op = new BandCombineOp(matrix, null);
for (int i = 2; i < 6; i++)
{
Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, i, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
}
// Repeat the above test, but with too many rows instead of too few
matrix = new float[][] {new float[] {1, 2, 3,},
new float[] {4, 5, 6,},
new float[] {2, 4, 6,},
new float[] {1, 3, 5,},
new float[] {7, 8, 9,}};
op = new BandCombineOp(matrix, null);
for (int i = 2; i < 6; i++)
{
Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, i, new Point(5, 5));
try
{
op.createCompatibleDestRaster(src);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
}
}
}