public BufferedImage createCompatibleDestImage(BufferedImage src, ColorModel dstCM) { if (dstCM == null) dstCM = src.getColorModel(); return new BufferedImage( dstCM, dstCM.createCompatibleWritableRaster(src.getWidth(), src.getHeight()), dstCM.isAlphaPremultiplied(), null); }
public BufferedImage filter(BufferedImage src, BufferedImage dst) { int w = src.getWidth(); int h = src.getHeight(); if (dst == null) { ColorModel dstCM = src.getColorModel(); dst = new BufferedImage( dstCM, dstCM.createCompatibleWritableRaster(width, height), dstCM.isAlphaPremultiplied(), null); } Graphics2D g = dst.createGraphics(); g.drawRenderedImage(src, AffineTransform.getTranslateInstance(-x, -y)); g.dispose(); return dst; }
/** * PS see http://astronomy.swin.edu.au/~pbourke/geomformats/postscript/ Java * http://show.docjava.com:8086/book/cgij/doc/ip/graphics/SimpleImageFrame.java.html */ public boolean drawImage( Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer) { try { // get data from image int[] pixels = new int[width * height]; PixelGrabber grabber = new PixelGrabber(img, 0, 0, width, height, pixels, 0, width); grabber.grabPixels(); ColorModel model = ColorModel.getRGBdefault(); // print data to ps m_printstream.println("gsave"); m_printstream.println( xTransform(xScale(x)) + " " + (yTransform(yScale(y)) - yScale(height)) + " translate"); m_printstream.println(xScale(width) + " " + yScale(height) + " scale"); m_printstream.println( width + " " + height + " " + "8" + " [" + width + " 0 0 " + (-height) + " 0 " + height + "]"); m_printstream.println("{<"); int index; for (int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { index = i * width + j; m_printstream.print(toHex(model.getRed(pixels[index]))); m_printstream.print(toHex(model.getGreen(pixels[index]))); m_printstream.print(toHex(model.getBlue(pixels[index]))); } m_printstream.println(); } m_printstream.println(">}"); m_printstream.println("false 3 colorimage"); m_printstream.println("grestore"); return true; } catch (Exception e) { e.printStackTrace(); return false; } }
/** * Paint the image onto a Graphics object. The painting is performed tile-by-tile, and includes a * grey region covering the unused portion of image tiles as well as the general background. At * this point the image must be byte data. */ public synchronized void paintComponent(Graphics g) { Graphics2D g2D = null; if (g instanceof Graphics2D) { g2D = (Graphics2D) g; } else { return; } // if source is null, it's just a component if (source == null) { g2D.setColor(getBackground()); g2D.fillRect(0, 0, componentWidth, componentHeight); return; } int transX = -originX; int transY = -originY; // Get the clipping rectangle and translate it into image coordinates. Rectangle clipBounds = g.getClipBounds(); if (clipBounds == null) { clipBounds = new Rectangle(0, 0, componentWidth, componentHeight); } // clear the background (clip it) [minimal optimization here] if (transX > 0 || transY > 0 || transX < (componentWidth - source.getWidth()) || transY < (componentHeight - source.getHeight())) { g2D.setColor(getBackground()); g2D.fillRect(0, 0, componentWidth, componentHeight); } clipBounds.translate(-transX, -transY); // Determine the extent of the clipping region in tile coordinates. int txmin, txmax, tymin, tymax; int ti, tj; txmin = XtoTileX(clipBounds.x); txmin = Math.max(txmin, minTileX); txmin = Math.min(txmin, maxTileX); txmax = XtoTileX(clipBounds.x + clipBounds.width - 1); txmax = Math.max(txmax, minTileX); txmax = Math.min(txmax, maxTileX); tymin = YtoTileY(clipBounds.y); tymin = Math.max(tymin, minTileY); tymin = Math.min(tymin, maxTileY); tymax = YtoTileY(clipBounds.y + clipBounds.height - 1); tymax = Math.max(tymax, minTileY); tymax = Math.min(tymax, maxTileY); Insets insets = getInsets(); // Loop over tiles within the clipping region for (tj = tymin; tj <= tymax; tj++) { for (ti = txmin; ti <= txmax; ti++) { int tx = TileXtoX(ti); int ty = TileYtoY(tj); Raster tile = source.getTile(ti, tj); if (tile != null) { DataBuffer dataBuffer = tile.getDataBuffer(); WritableRaster wr = tile.createWritableRaster(sampleModel, dataBuffer, null); BufferedImage bi = new BufferedImage(colorModel, wr, colorModel.isAlphaPremultiplied(), null); // correctly handles band offsets if (brightnessEnabled == true) { SampleModel sm = sampleModel.createCompatibleSampleModel(tile.getWidth(), tile.getHeight()); WritableRaster raster = RasterFactory.createWritableRaster(sm, null); BufferedImage bimg = new BufferedImage(colorModel, raster, colorModel.isAlphaPremultiplied(), null); // don't move this code ByteLookupTable lutTable = new ByteLookupTable(0, lutData); LookupOp lookup = new LookupOp(lutTable, null); lookup.filter(bi, bimg); g2D.drawImage(bimg, biop, tx + transX + insets.left, ty + transY + insets.top); } else { AffineTransform transform; transform = AffineTransform.getTranslateInstance( tx + transX + insets.left, ty + transY + insets.top); g2D.drawRenderedImage(bi, transform); } } } } }