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authorJakob Heher <jakob.heher@iaik.tugraz.at>2022-08-08 13:31:19 +0200
committerJakob Heher <jakob.heher@iaik.tugraz.at>2022-08-08 13:31:19 +0200
commit47e1479b8cbb3d4f2f13abff8e5b514b39efb43a (patch)
treedc28e4ca5efd3cbcb8769b131ce61cf6425ce852 /pdf-over-commons/src
parent5e96ca220d624d8636d4936f928e213a994b96a7 (diff)
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move ImageConverter to ImageUtil
Diffstat (limited to 'pdf-over-commons/src')
-rw-r--r--pdf-over-commons/src/main/java/at/asit/pdfover/commons/utils/ImageUtil.java95
1 files changed, 95 insertions, 0 deletions
diff --git a/pdf-over-commons/src/main/java/at/asit/pdfover/commons/utils/ImageUtil.java b/pdf-over-commons/src/main/java/at/asit/pdfover/commons/utils/ImageUtil.java
index e3540a35..4a926226 100644
--- a/pdf-over-commons/src/main/java/at/asit/pdfover/commons/utils/ImageUtil.java
+++ b/pdf-over-commons/src/main/java/at/asit/pdfover/commons/utils/ImageUtil.java
@@ -6,6 +6,15 @@ import java.io.File;
import java.io.IOException;
import java.util.Iterator;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DirectColorModel;
+import java.awt.image.IndexColorModel;
+import java.awt.image.WritableRaster;
+
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.PaletteData;
+import org.eclipse.swt.graphics.RGB;
+
import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
@@ -156,4 +165,90 @@ public final class ImageUtil {
JOptionPane.showMessageDialog(null, new JScrollPane(panel));
return image;
}
+
+ /**
+ * Convert AWT Image to SWT Image
+ *
+ * @param bufferedImage
+ * @return SWT Image data
+ */
+ public static ImageData convertToSWT(final BufferedImage bufferedImage) {
+ if (bufferedImage == null)
+ return null;
+
+ if ((bufferedImage.getWidth() <= 0) || (bufferedImage.getHeight() <= 0))
+ return null;
+
+ if (bufferedImage.getColorModel() instanceof DirectColorModel) {
+ DirectColorModel colorModel = (DirectColorModel) bufferedImage
+ .getColorModel();
+ PaletteData palette = new PaletteData(colorModel.getRedMask(),
+ colorModel.getGreenMask(), colorModel.getBlueMask());
+ ImageData data = new ImageData(bufferedImage.getWidth(),
+ bufferedImage.getHeight(), colorModel.getPixelSize(),
+ palette);
+ WritableRaster raster = bufferedImage.getRaster();
+ int[] pixelArray = new int[3];
+ for (int y = 0; y < data.height; y++) {
+ for (int x = 0; x < data.width; x++) {
+ raster.getPixel(x, y, pixelArray);
+ int pixel = palette.getPixel(new RGB(pixelArray[0],
+ pixelArray[1], pixelArray[2]));
+ data.setPixel(x, y, pixel);
+ }
+ }
+ return data;
+ } else if (bufferedImage.getColorModel() instanceof IndexColorModel) {
+ IndexColorModel colorModel = (IndexColorModel) bufferedImage
+ .getColorModel();
+ int size = colorModel.getMapSize();
+ byte[] reds = new byte[size];
+ byte[] greens = new byte[size];
+ byte[] blues = new byte[size];
+ colorModel.getReds(reds);
+ colorModel.getGreens(greens);
+ colorModel.getBlues(blues);
+ RGB[] rgbs = new RGB[size];
+ for (int i = 0; i < rgbs.length; i++) {
+ rgbs[i] = new RGB(reds[i] & 0xFF, greens[i] & 0xFF,
+ blues[i] & 0xFF);
+ }
+ PaletteData palette = new PaletteData(rgbs);
+ ImageData data = new ImageData(bufferedImage.getWidth(),
+ bufferedImage.getHeight(), colorModel.getPixelSize(),
+ palette);
+ data.transparentPixel = colorModel.getTransparentPixel();
+ WritableRaster raster = bufferedImage.getRaster();
+ int[] pixelArray = new int[1];
+ for (int y = 0; y < data.height; y++) {
+ for (int x = 0; x < data.width; x++) {
+ raster.getPixel(x, y, pixelArray);
+ data.setPixel(x, y, pixelArray[0]);
+ }
+ }
+ return data;
+ } else if (bufferedImage.getColorModel() instanceof ComponentColorModel) {
+ ComponentColorModel colorModel = (ComponentColorModel)bufferedImage.getColorModel();
+
+ //ASSUMES: 3 BYTE BGR IMAGE TYPE
+
+ PaletteData palette = new PaletteData(0x0000FF, 0x00FF00,0xFF0000);
+ ImageData data = new ImageData(bufferedImage.getWidth(), bufferedImage.getHeight(), colorModel.getPixelSize(), palette);
+
+ //This is valid because we are using a 3-byte Data model with no transparent pixels
+ data.transparentPixel = -1;
+
+ WritableRaster raster = bufferedImage.getRaster();
+ int[] pixelArray = new int[bufferedImage.getColorModel().getNumComponents()];
+ for (int y = 0; y < data.height; y++) {
+ for (int x = 0; x < data.width; x++) {
+ raster.getPixel(x, y, pixelArray);
+ int pixel = palette.getPixel(new RGB(pixelArray[0], pixelArray[1], pixelArray[2]));
+ data.setPixel(x, y, pixel);
+ }
+ }
+ return data;
+ }
+ return null;
+ }
}