"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/Type5ShadingContext.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.

Type5ShadingContext.java  (pdfbox-2.0.23-src)	:	Type5ShadingContext.java  (pdfbox-2.0.24-src)
skipping to change at line 21		skipping to change at line 21
* 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.Rectangle;		import java.awt.Rectangle;
import java.awt.geom.AffineTransform;		import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.awt.image.ColorModel;		import java.awt.image.ColorModel;
import java.io.EOFException;
import java.io.IOException;		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.Log;
import org.apache.commons.logging.LogFactory;		import org.apache.commons.logging.LogFactory;
import org.apache.pdfbox.cos.COSDictionary;
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;
/**		/**
* AWT PaintContext for Gouraud Triangle Lattice (Type 5) shading.		* AWT PaintContext for Gouraud Triangle Lattice (Type 5) shading.
*		*
* @author Tilman Hausherr		* @author Tilman Hausherr
* @author Shaola Ren		* @author Shaola Ren
*/		*/
class Type5ShadingContext extends GouraudShadingContext		class Type5ShadingContext extends GouraudShadingContext
{		{
skipping to change at line 63		skipping to change at line 54
* @param matrix the pattern matrix concatenated with that of the parent con tent stream		* @param matrix the pattern matrix concatenated with that of the parent con tent stream
* @throws IOException if something went wrong		* @throws IOException if something went wrong
*/		*/
Type5ShadingContext(PDShadingType5 shading, ColorModel cm, AffineTransform x form,		Type5ShadingContext(PDShadingType5 shading, ColorModel cm, AffineTransform x form,
Matrix matrix, Rectangle deviceBounds) throws IOE xception		Matrix matrix, Rectangle deviceBounds) throws IOE xception
{		{
super(shading, cm, xform, matrix);		super(shading, cm, xform, matrix);
LOG.debug("Type5ShadingContext");		LOG.debug("Type5ShadingContext");
setTriangleList(collectTriangles(shading, xform, matrix));		setTriangleList(shading.collectTriangles(xform, matrix));
createPixelTable(deviceBounds);		createPixelTable(deviceBounds);
}		}
private List<ShadedTriangle> collectTriangles(PDShadingType5 latticeTriangle
ShadingType,
AffineTransform xform, Matrix matrix) throws IOException
{
COSDictionary dict = latticeTriangleShadingType.getCOSObject();
if (!(dict instanceof COSStream))
{
return Collections.emptyList();
}
PDRange rangeX = latticeTriangleShadingType.getDecodeForParameter(0);
PDRange rangeY = latticeTriangleShadingType.getDecodeForParameter(1);
if (Float.compare(rangeX.getMin(), rangeX.getMax()) == 0 ||
Float.compare(rangeY.getMin(), rangeY.getMax()) == 0)
{
return Collections.emptyList();
}
int numPerRow = latticeTriangleShadingType.getVerticesPerRow();
PDRange[] colRange = new PDRange[numberOfColorComponents];
for (int i = 0; i < numberOfColorComponents; ++i)
{
colRange[i] = latticeTriangleShadingType.getDecodeForParameter(2 + i
);
}
List<Vertex> vlist = new ArrayList<Vertex>();
long maxSrcCoord = (long) Math.pow(2, bitsPerCoordinate) - 1;
long maxSrcColor = (long) Math.pow(2, bitsPerColorComponent) - 1;
COSStream cosStream = (COSStream) dict;
ImageInputStream mciis = new MemoryCacheImageInputStream(cosStream.creat
eInputStream());
try
{
boolean eof = false;
while (!eof)
{
Vertex p;
try
{
p = readVertex(mciis, maxSrcCoord, maxSrcColor, rangeX, rang
eY, colRange, matrix, xform);
vlist.add(p);
}
catch (EOFException ex)
{
eof = true;
}
}
}
finally
{
mciis.close();
}
int rowNum = vlist.size() / numPerRow;
Vertex[][] latticeArray = new Vertex[rowNum][numPerRow];
List<ShadedTriangle> list = new ArrayList<ShadedTriangle>();
if (rowNum < 2)
{
// must have at least two rows; if not, return empty list
return list;
}
for (int i = 0; i < rowNum; i++)
{
for (int j = 0; j < numPerRow; j++)
{
latticeArray[i][j] = vlist.get(i * numPerRow + j);
}
}
for (int i = 0; i < rowNum - 1; i++)
{
for (int j = 0; j < numPerRow - 1; j++)
{
Point2D[] ps = new Point2D[] {
latticeArray[i][j].point,
latticeArray[i][j + 1].point,
latticeArray[i + 1][j].point };
float[][] cs = new float[][] {
latticeArray[i][j].color,
latticeArray[i][j + 1].color,
latticeArray[i + 1][j].color };
list.add(new ShadedTriangle(ps, cs));
ps = new Point2D[] {
latticeArray[i][j + 1].point,
latticeArray[i + 1][j].point,
latticeArray[i + 1][j + 1].point };
cs = new float[][]{
latticeArray[i][j + 1].color,
latticeArray[i + 1][j].color,
latticeArray[i + 1][j + 1].color };
list.add(new ShadedTriangle(ps, cs));
}
}
return list;
}
}		}
End of changes. 6 change blocks.
112 lines changed or deleted		2 lines changed or added

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