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Java/PDF RTF/Image Mask - История изменений
2026-04-22T12:15:09Z
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Admin: 1 версия
2010-06-01T05:59:49Z
<p>1 версия</p>
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<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 05:59, 1 июня 2010</td>
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Admin
http://www.jexp.ru/index.php?title=Java/PDF_RTF/Image_Mask&diff=5890&oldid=prev
в 18:01, 31 мая 2010
2010-05-31T18:01:43Z
<p></p>
<p><b>Новая страница</b></p><div>== Image Masks Demo ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
import java.io.FileOutputStream;<br />
import com.lowagie.text.Document;<br />
import com.lowagie.text.Image;<br />
import com.lowagie.text.PageSize;<br />
import com.lowagie.text.Paragraph;<br />
import com.lowagie.text.pdf.PdfContentByte;<br />
import com.lowagie.text.pdf.PdfWriter;<br />
public class ImageMasksPDF {<br />
public static void main(String[] args) {<br />
Document document = new Document(PageSize.A4, 50, 50, 50, 50);<br />
try {<br />
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("ImageMasksPDF.pdf"));<br />
document.open();<br />
Paragraph p = new Paragraph("Some text behind a masked image.");<br />
for(int i=0;i<50;i++){<br />
document.add(p); <br />
}<br />
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PdfContentByte cb = writer.getDirectContent();<br />
byte maskr[] = { (byte) 0x77, (byte) 0x77, (byte) 0x00, (byte) 0x00, (byte) 0x00,<br />
(byte) 0x00, (byte) 0x77, (byte) 0x77 };<br />
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Image mask = Image.getInstance(8, 8, 1, 1, maskr);<br />
mask.makeMask();<br />
mask.setInvertMask(true);<br />
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Image image = Image.getInstance("logo.png");<br />
image.setImageMask(mask);<br />
image.setAlignment(Image.TEXTWRAP);<br />
image.setAbsolutePosition(60, 550);<br />
cb.addImage(image);<br />
document.close();<br />
} catch (Exception de) {<br />
de.printStackTrace();<br />
}<br />
}<br />
}<br />
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</source><br />
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<!-- end source code --><br />
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== Making Image Masks From Byte Array ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
import java.io.FileOutputStream;<br />
import com.lowagie.text.Document;<br />
import com.lowagie.text.Image;<br />
import com.lowagie.text.PageSize;<br />
import com.lowagie.text.Paragraph;<br />
import com.lowagie.text.pdf.PdfContentByte;<br />
import com.lowagie.text.pdf.PdfWriter;<br />
public class MakingMasksFromByteArrayPDF {<br />
public static void main(String[] args) {<br />
Document document = new Document(PageSize.A4, 50, 50, 50, 50);<br />
try {<br />
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("MakingMasksFromByteArrayPDF.pdf"));<br />
document.open();<br />
Paragraph p = new Paragraph("Some text behind a masked image.");<br />
for(int i=0;i<10;i++){<br />
document.add(p); <br />
}<br />
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PdfContentByte cb = writer.getDirectContent();<br />
byte maskr[] = { (byte) 0x77, (byte) 0x77, (byte) 0x00, (byte) 0x00, (byte) 0x00,<br />
(byte) 0x00, (byte) 0x77, (byte) 0x77 };<br />
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Image mask = Image.getInstance(8, 8, 1, 1, maskr);<br />
mask.makeMask();<br />
mask.setInvertMask(true);<br />
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cb.setRGBColorFill(255, 0, 0);<br />
cb.addImage(mask, mask.scaledWidth() * 8, 0, 0, mask.scaledHeight() * 8, 100, 450);<br />
document.close();<br />
} catch (Exception de) {<br />
de.printStackTrace();<br />
}<br />
}<br />
}<br />
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</source><br />
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<!-- end source code --></div>