"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/PDShadingType4.java" between
pdfbox-2.0.23-src.zip and pdfbox-2.0.24-src.zip

About: Apache PDFBox is a Java PDF library tool that allows creation of new PDF documents, manipulation of existing documents and the ability to extract content from documents.

PDShadingType4.java  (pdfbox-2.0.23-src)	:	PDShadingType4.java  (pdfbox-2.0.24-src)
skipping to change at line 20		skipping to change at line 20
*		*
* Unless required by applicable law or agreed to in writing, software		* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,		* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and		* See the License for the specific language governing permissions and
* limitations under the License.		* limitations under the License.
*/		*/
package org.apache.pdfbox.pdmodel.graphics.shading;		package org.apache.pdfbox.pdmodel.graphics.shading;
import java.awt.Paint;		import java.awt.Paint;
		import java.awt.geom.AffineTransform;
		import java.awt.geom.Point2D;
		import java.io.EOFException;
		import java.io.IOException;
		import java.util.ArrayList;
		import java.util.Collections;
		import java.util.List;
		import javax.imageio.stream.ImageInputStream;
		import javax.imageio.stream.MemoryCacheImageInputStream;
		import org.apache.commons.logging.Log;
		import org.apache.commons.logging.LogFactory;
import org.apache.pdfbox.cos.COSDictionary;		import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;		import org.apache.pdfbox.cos.COSName;
		import org.apache.pdfbox.cos.COSStream;
		import org.apache.pdfbox.pdmodel.common.PDRange;
import org.apache.pdfbox.util.Matrix;		import org.apache.pdfbox.util.Matrix;
/**		/**
* Resources for a shading type 4 (Free-Form Gouraud-Shaded Triangle Mesh).		* Resources for a shading type 4 (Free-Form Gouraud-Shaded Triangle Mesh).
*/		*/
public class PDShadingType4 extends PDTriangleBasedShadingType		public class PDShadingType4 extends PDTriangleBasedShadingType
{		{
		private static final Log LOG = LogFactory.getLog(PDShadingType4.class);
/**		/**
* Constructor using the given shading dictionary.		* Constructor using the given shading dictionary.
*		*
* @param shadingDictionary the dictionary for this shading		* @param shadingDictionary the dictionary for this shading
*/		*/
public PDShadingType4(COSDictionary shadingDictionary)		public PDShadingType4(COSDictionary shadingDictionary)
{		{
super(shadingDictionary);		super(shadingDictionary);
}		}
skipping to change at line 72		skipping to change at line 88
public void setBitsPerFlag(int bitsPerFlag)		public void setBitsPerFlag(int bitsPerFlag)
{		{
getCOSObject().setInt(COSName.BITS_PER_FLAG, bitsPerFlag);		getCOSObject().setInt(COSName.BITS_PER_FLAG, bitsPerFlag);
}		}
@Override		@Override
public Paint toPaint(Matrix matrix)		public Paint toPaint(Matrix matrix)
{		{
return new Type4ShadingPaint(this, matrix);		return new Type4ShadingPaint(this, matrix);
}		}
		@SuppressWarnings("squid:S1166")
		@Override
		List<ShadedTriangle> collectTriangles(AffineTransform xform, Matrix matrix)
		throws IOException
		{
		int bitsPerFlag = getBitsPerFlag();
		COSDictionary dict = getCOSObject();
		if (!(dict instanceof COSStream))
		{
		return Collections.emptyList();
		}
		PDRange rangeX = getDecodeForParameter(0);
		PDRange rangeY = getDecodeForParameter(1);
		if (Float.compare(rangeX.getMin(), rangeX.getMax()) == 0 ||
		Float.compare(rangeY.getMin(), rangeY.getMax()) == 0)
		{
		return Collections.emptyList();
		}
		PDRange[] colRange = new PDRange[getNumberOfColorComponents()];
		for (int i = 0; i < colRange.length; ++i)
		{
		colRange[i] = getDecodeForParameter(2 + i);
		}
		List<ShadedTriangle> list = new ArrayList<ShadedTriangle>();
		long maxSrcCoord = (long) Math.pow(2, getBitsPerCoordinate()) - 1;
		long maxSrcColor = (long) Math.pow(2, getBitsPerComponent()) - 1;
		COSStream stream = (COSStream) dict;
		ImageInputStream mciis = new MemoryCacheImageInputStream(stream.createIn
		putStream());
		try
		{
		byte flag = (byte) 0;
		try
		{
		flag = (byte) (mciis.readBits(bitsPerFlag) & 3);
		}
		catch (EOFException ex)
		{
		LOG.error(ex);
		}
		boolean eof = false;
		while (!eof)
		{
		Vertex p0;
		Vertex p1;
		Vertex p2;
		Point2D[] ps;
		float[][] cs;
		int lastIndex;
		try
		{
		switch (flag)
		{
		case 0:
		p0 = readVertex(mciis, maxSrcCoord, maxSrcColor, ran
		geX, rangeY, colRange,
		matrix, xform);
		flag = (byte) (mciis.readBits(bitsPerFlag) & 3);
		if (flag != 0)
		{
		LOG.error("bad triangle: " + flag);
		}
		p1 = readVertex(mciis, maxSrcCoord, maxSrcColor, ran
		geX, rangeY, colRange,
		matrix, xform);
		mciis.readBits(bitsPerFlag);
		if (flag != 0)
		{
		LOG.error("bad triangle: " + flag);
		}
		p2 = readVertex(mciis, maxSrcCoord, maxSrcColor, ran
		geX, rangeY, colRange,
		matrix, xform);
		ps = new Point2D[] { p0.point, p1.point, p2.point };
		cs = new float[][] { p0.color, p1.color, p2.color };
		list.add(new ShadedTriangle(ps, cs));
		flag = (byte) (mciis.readBits(bitsPerFlag) & 3);
		break;
		case 1:
		case 2:
		lastIndex = list.size() - 1;
		if (lastIndex < 0)
		{
		LOG.error("broken data stream: " + list.size());
		}
		else
		{
		ShadedTriangle preTri = list.get(lastIndex);
		p2 = readVertex(mciis, maxSrcCoord, maxSrcColor,
		rangeX, rangeY,
		colRange, matrix, xform);
		ps = new Point2D[] { flag == 1 ? preTri.corner[1
		] : preTri.corner[0],
		preTri.corner[2],
		p2.point };
		cs = new float[][] { flag == 1 ? preTri.color[1]
		: preTri.color[0],
		preTri.color[2],
		p2.color };
		list.add(new ShadedTriangle(ps, cs));
		flag = (byte) (mciis.readBits(bitsPerFlag) & 3);
		}
		break;
		default:
		LOG.warn("bad flag: " + flag);
		break;
		}
		}
		catch (EOFException ex)
		{
		eof = true;
		}
		}
		}
		finally
		{
		mciis.close();
		}
		return list;
		}
}		}
End of changes. 5 change blocks.
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