diff options
Diffstat (limited to 'gnu/testlet/java/awt/image/DirectColorModel/coerceData.java')
| -rw-r--r-- | gnu/testlet/java/awt/image/DirectColorModel/coerceData.java | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/gnu/testlet/java/awt/image/DirectColorModel/coerceData.java b/gnu/testlet/java/awt/image/DirectColorModel/coerceData.java new file mode 100644 index 00000000..2cad234d --- /dev/null +++ b/gnu/testlet/java/awt/image/DirectColorModel/coerceData.java @@ -0,0 +1,169 @@ +// Tags: JDK1.2 + +// 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, 59 Temple Place - Suite 330, +// Boston, MA 02111-1307, USA. */ + +package gnu.testlet.java.awt.image.DirectColorModel; + +import gnu.testlet.TestHarness; +import gnu.testlet.Testlet; + +import java.awt.Point; +import java.awt.image.BandedSampleModel; +import java.awt.image.ColorModel; +import java.awt.image.ComponentSampleModel; +import java.awt.image.DataBuffer; +import java.awt.image.DirectColorModel; +import java.awt.image.PixelInterleavedSampleModel; +import java.awt.image.Raster; +import java.awt.image.SampleModel; +import java.awt.image.SinglePixelPackedSampleModel; +import java.awt.image.WritableRaster; + +/** + * Some checks for the coerceData method in the {@link DirectColorModel} class. + */ +public class coerceData implements Testlet +{ + + /** + * Runs the test using the specified harness. + * + * @param harness the test harness (<code>null</code> not permitted). + */ + public void test(TestHarness harness) + { + harness.checkPoint("coerceData with BandedSampleModel"); + runTest(harness, new BandedSampleModel(DataBuffer.TYPE_INT, + 50, 50, 4)); + + harness.checkPoint("coerceData with ComponentSampleModel"); + runTest(harness, new ComponentSampleModel(DataBuffer.TYPE_INT, + 50, 50, 4, 200, + new int[]{0, 1, 2, 3})); + + // MultiPixelPackedSampleModel not allowed, since that sample model can + // only represent one-banded images. We should check to ensure failure + // is consistent. + + harness.checkPoint("coerceData with PixelInterleavedSampleModel"); + runTest(harness, new PixelInterleavedSampleModel(DataBuffer.TYPE_INT, + 50, 50, 4, 200, + new int[]{0, 1, 2, 3})); + + harness.checkPoint("coerceData with SinglePixelPackedSampleModel"); + runTest(harness, new SinglePixelPackedSampleModel(DataBuffer.TYPE_INT, + 50, 50, + new int[]{0x00ff0000, + 0x0000ff00, + 0x000000ff, + 0xff000000})); + } + + private void runTest(TestHarness harness, SampleModel sample) + { + // Create and popular raster for testing + WritableRaster rast = Raster.createWritableRaster(sample, new Point(0,0)); + + for (int x = 0; x < 50; x++) + for (int y = 0; y < 50; y++) + for (int b = 0; b < 4; b++) + if (b < 3) + rast.setSample(x, y, b, (float)x+y+b); + else + rast.setSample(x, y, b, (float)((x+y))); + + DirectColorModel dcm = new DirectColorModel(32, 0x00ff0000, 0x0000ff00, + 0x000000ff, 0xff000000); + + harness.check(dcm.isAlphaPremultiplied(), false); + + // Check to ensure data is not changed needlessly + ColorModel resultCM = dcm.coerceData(rast, false); + harness.check(resultCM.getClass().equals(dcm.getClass())); + harness.check(resultCM.isAlphaPremultiplied(), false); + harness.check(dcm, resultCM); + for (int x = 0; x < 50; x++) + for (int y = 0; y < 50; y++) + for (int b = 0; b < 4; b++) + { + if (b < 3) + harness.check(rast.getSample(x, y, b), (x+y+b)); + else + harness.check(rast.getSampleFloat(x, y, b), (x+y)); + } + + // Coerce data into a premultiplied state + resultCM = dcm.coerceData(rast, true); + + // Ensure we're still using the same color model! + harness.check(resultCM.getClass().equals(dcm.getClass())); + harness.check(resultCM.isAlphaPremultiplied(), true); + harness.check(! (dcm == resultCM)); // object is cloned... + + // Check values + for (int x = 0; x < 50; x++) + for (int y = 0; y < 50; y++) + for (int b = 0; b < 4; b++) + { + if (b < 3) + harness.check(rast.getSample(x, y, b), + Math.round((x+y+b)*((x+y)/(float)255))); + else + harness.check(rast.getSampleFloat(x, y, b), x+y); + } + + // Make a copy of the raster, to compare against for the next test + WritableRaster rast2 = Raster.createWritableRaster(sample, new Point(0,0)); + for (int x = 0; x < 50; x++) + for (int y = 0; y < 50; y++) + for (int b = 0; b < 4; b++) + rast2.setSample(x, y, b, + rast.getSample(x, y, b)); + + // And do the reverse.. un-multiply + harness.check(resultCM.isAlphaPremultiplied(), true); + ColorModel resultCM2 = resultCM.coerceData(rast, false); + harness.check(resultCM2.getClass().equals(resultCM.getClass())); + harness.check(resultCM2.isAlphaPremultiplied(), false); + harness.check(! (resultCM == resultCM2)); + + // Check values + for (int x = 0; x < 50; x++) + for (int y = 0; y < 50; y++) + for (int b = 0; b < 4; b++) + { + if (b < 3) + { + // Do some trickery to work around differing floating-point + // precision (a division equalling 0.49999 will round up or + // down unpredictably) + float expected = rast2.getSample(x, y, b)/((x+y)/((float)255)); + if (expected - (int)expected > 0.49 + && expected - (int)expected < 0.51) + harness.check(rast.getSample(x, y, b) == (int)expected + || rast.getSample(x, y, b) == (int)expected + 1); + else + harness.check(rast.getSample(x, y, b),Math.round(expected)); + } + else + harness.check(rast.getSampleFloat(x, y, b), (x+y)); + } + } +} |