David.Turing's blog

import ?com.gif4j. * ;

import ?java.awt. * ;
import ?java.awt.image.BufferedImage;
import ?java.io.File;
import ?java.io.IOException;


public ? class ?GifImageWatermarkExample?{

???? // ?Usage:?java?GifImageWatermarkExample?[PathToGifImageToWatermark]?(please?be?sure?that?the?gif4j?jar?is?in?your?CLASSPATH)
???? // ?By?default?the?gif4j_logotype.gif?as?an?example?gif?image?is?used
???? public ? static ? void ?main(String[]?args)?{
????????File?gifImageFileToWatermark? = ? null ;
???????? if ?(args.length? == ? 0 )?{
????????????gifImageFileToWatermark? = ? new ?File( " test.gif " );
????????}? else
????????????gifImageFileToWatermark? = ? new ?File(args[ 0 ]);

???????? // ?load?and?decode?gif?image
????????GifImage?gifImage? = ? null ;
???????? try ?{
????????????gifImage? = ?GifDecoder.decode(gifImageFileToWatermark);
????????}? catch ?(IOException?e)?{
????????????e.printStackTrace();
????????????System.exit( 1 );
????????}

???????? // ?change?out?directory?if?it?is?necessary
????????File?outputDir? = ? new ?File( " . " ? + ?File.separator? + ? " result " );
???????? if ?( ! outputDir.exists())
????????????outputDir.mkdirs();

???????? // ?create?watermark?image?using?TextPainter
????????TextPainter?painter? = ? new ?TextPainter( new ?Font( " Verdana " ,?Font.BOLD,? 10 ));
????????painter.setOutlinePaint(Color.WHITE);
????????BufferedImage?watermarkImage? = ?painter.renderString( " david.turing " ,? true );

???????? // ?create?watermark
????????Watermark?watermark? = ? new ?Watermark(watermarkImage,?Watermark.LAYOUT_TOP_LEFT,? 0.2f );

???????? // ?apply?watermark
????????GifImage?topLeftWatermarked? = ?watermark.apply(gifImage,? true );
???????? // ?apply?watermark?smoothly
????????GifImage?topLeftWatermarked_smoothly? = ?watermark.apply(gifImage,? true );

???????? // ?change?the?watermark?alignment
????????watermark.setLayoutConstraint(Watermark.LAYOUT_MIDDLE_CENTER);

???????? // ?apply?watermark
????????GifImage?middleCenterWatermarked? = ?watermark.apply(gifImage,? false );
???????? // ?apply?watermark?smoothly
????????GifImage?middleCenterWatermarked_smoothly? = ?watermark.apply(gifImage,? true );

???????? // ?change?the?watermark?alignment
????????watermark.setLayoutConstraint(Watermark.LAYOUT_BOTTOM_RIGHT);

???????? // ?apply?watermark
????????GifImage?bottomRightWatermarked? = ?watermark.apply(gifImage,? false );
???????? // ?apply?watermark?smoothly
????????GifImage?bottomRightWatermarked_smoothly? = ?watermark.apply(gifImage,? true );

???????? // ?change?the?watermark?alignment
????????watermark.setLayoutConstraint(Watermark.LAYOUT_COVER_CONSECUTIVELY);
???????? // ?change?the?watermark?transparency
????????watermark.setTransparency( 0.20f );

???????? // ?apply?watermark
????????GifImage?coverConsWatermarked? = ?watermark.apply(gifImage,? false );
???????? // ?apply?watermark?smoothly
????????GifImage?coverConsWatermarked_smoothly? = ?watermark.apply(gifImage,? true );

???????? // ?Save?the?results
???????? try ?{
????????????GifEncoder.encode(topLeftWatermarked, new ?File(outputDir, " topLeftWatermarked.gif " ));
????????????GifEncoder.encode(topLeftWatermarked_smoothly, new ?File(outputDir, " topLeftWatermarked_smooth.gif " ));
????????????GifEncoder.encode(middleCenterWatermarked, new ?File(outputDir, " middleCenterWatermarked.gif " ));
????????????GifEncoder.encode(middleCenterWatermarked_smoothly, new ?File(outputDir, " middleCenterWatermarked_smooth.gif " ));
????????????GifEncoder.encode(bottomRightWatermarked, new ?File(outputDir, " bottomRightWatermarked.gif " ));
????????????GifEncoder.encode(bottomRightWatermarked_smoothly, new ?File(outputDir, " bottomRightWatermarked_smooth.gif " ));
????????????GifEncoder.encode(coverConsWatermarked, new ?File(outputDir, " coverConsWatermarked.gif " ));
????????????GifEncoder.encode(coverConsWatermarked_smoothly, new ?File(outputDir, " coverConsWatermarked_smooth.gif " ));
????????}? catch ?(IOException?e)?{
????????????e.printStackTrace();
????????}
????}
}