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Closes #171: strip alpha channel from png

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bgamard 2017-11-23 15:40:53 +01:00
parent 4fc434a222
commit e883c1e678
1 changed files with 12 additions and 0 deletions
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12
docs-core/src/main/java/com/sismics/util/ImageUtil.java
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@ -9,6 +9,7 @@ import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.IOException;
@ -40,6 +41,17 @@ public class ImageUtil {
iwp.setCompressionQuality(1.f);
imageOutputStream = ImageIO.createImageOutputStream(outputStream);
writer.setOutput(imageOutputStream);
if (image.getColorModel().hasAlpha()) {
// Strip alpha channel
BufferedImage noAlphaImage = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics graphics = noAlphaImage.getGraphics();
graphics.setColor(Color.WHITE);
graphics.fillRect(0, 0, image.getWidth(), image.getHeight());
graphics.drawImage(image, 0, 0, null);
image = noAlphaImage;
}
IIOImage iioImage = new IIOImage(image, null, null);
writer.write(null, iioImage, iwp);
} finally {