diff options
Diffstat (limited to 'pdf-over-commons/src/main/java/at/asit')
| -rw-r--r-- | pdf-over-commons/src/main/java/at/asit/pdfover/commons/utils/ImageUtil.java | 95 |
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; + } } |