/*
* Copyright 2016 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox.examples.pdmodel;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.graphics.color.PDColor;
import org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace;
import org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB;
import org.apache.pdfbox.pdmodel.graphics.color.PDPattern;
import org.apache.pdfbox.pdmodel.graphics.pattern.PDTilingPattern;
import org.apache.pdfbox.util.Charsets;
/**
* This is an example of how to create a page that uses patterns to paint areas.
*
* @author Tilman Hausherr
*/
public final class CreatePatternsPDF
{
private CreatePatternsPDF()
{
}
public static void main(String[] args) throws IOException
{
try (PDDocument doc = new PDDocument())
{
PDPage page = new PDPage();
doc.addPage(page);
page.setResources(new PDResources());
// Colored pattern, i.e. the pattern content stream will set its own color(s)
try (PDPageContentStream pcs = new PDPageContentStream(doc, page))
{
// Colored pattern, i.e. the pattern content stream will set its own color(s)
PDColorSpace patternCS1 = new PDPattern(null, PDDeviceRGB.INSTANCE);
// Table 75 spec
PDTilingPattern tilingPattern1 = new PDTilingPattern();
tilingPattern1.setBBox(new PDRectangle(0, 0, 10, 10));
tilingPattern1.setPaintType(PDTilingPattern.PAINT_COLORED);
tilingPattern1.setTilingType(PDTilingPattern.TILING_CONSTANT_SPACING);
tilingPattern1.setXStep(10);
tilingPattern1.setYStep(10);
COSName patternName1 = page.getResources().add(tilingPattern1);
//TODO
// there's no way to create something like a PDPageContentStream,
// so we'll do it the hard way
try (OutputStream os1 = tilingPattern1.getContentStream().createOutputStream())
{
// Set color, draw diagonal line + 2 more diagonals so that corners look good
os1.write("1 0 0 RG 0 0 m 10 10 l -1 9 m 1 11 l 9 -1 m 11 1 l s".getBytes(Charsets.US_ASCII));
}
PDColor patternColor1 = new PDColor(patternName1, patternCS1);
pcs.addRect(50, 500, 200, 200);
pcs.setNonStrokingColor(patternColor1);
pcs.fill();
// Uncolored pattern - the color is passed later
PDTilingPattern tilingPattern2 = new PDTilingPattern();
tilingPattern2.setBBox(new PDRectangle(0, 0, 10, 10));
tilingPattern2.setPaintType(PDTilingPattern.PAINT_UNCOLORED);
tilingPattern2.setTilingType(PDTilingPattern.TILING_NO_DISTORTION);
tilingPattern2.setXStep(10);
tilingPattern2.setYStep(10);
COSName patternName2 = page.getResources().add(tilingPattern2);
try (OutputStream os2 = tilingPattern2.getContentStream().createOutputStream())
{
// draw a cross
os2.write("0 5 m 10 5 l 5 0 m 5 10 l s".getBytes(Charsets.US_ASCII));
}
// Uncolored pattern colorspace needs to know the colorspace
// for the color values that will be passed when painting the fill
PDColorSpace patternCS2 = new PDPattern(null, PDDeviceRGB.INSTANCE);
PDColor patternColor2green = new PDColor(
new float[]{0,1,0},
patternName2,
patternCS2);
pcs.addRect(300, 500, 100, 100);
pcs.setNonStrokingColor(patternColor2green);
pcs.fill();
// same pattern again but with different color + different pattern start position
PDColor patternColor2blue = new PDColor(
new float[]{0,0,1},
patternName2,
patternCS2);
pcs.addRect(455, 505, 100, 100);
pcs.setNonStrokingColor(patternColor2blue);
pcs.fill();
}
doc.save("patterns.pdf");
}
}
}