diff options
Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/x/XGraphics2D.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/x/XGraphics2D.java | 509 |
1 files changed, 509 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/x/XGraphics2D.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/x/XGraphics2D.java new file mode 100644 index 000000000..0339a424d --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/x/XGraphics2D.java @@ -0,0 +1,509 @@ +/* XGraphics2D.java -- A Java based Graphics2D impl for X + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.awt.peer.x; + +import java.awt.Color; +import java.awt.Font; +import java.awt.Graphics; +import java.awt.GraphicsConfiguration; +import java.awt.Image; +import java.awt.Paint; +import java.awt.Rectangle; +import java.awt.Shape; +import java.awt.Toolkit; +import java.awt.Transparency; +import java.awt.geom.AffineTransform; +import java.awt.image.BufferedImage; +import java.awt.image.ColorModel; +import java.awt.image.DataBuffer; +import java.awt.image.ImageObserver; +import java.awt.image.Raster; +import java.awt.peer.FontPeer; +import java.util.HashMap; +import java.util.WeakHashMap; + +import gnu.java.awt.image.AsyncImage; +import gnu.java.awt.java2d.AbstractGraphics2D; +import gnu.java.awt.java2d.ScanlineCoverage; +import gnu.x11.Colormap; +import gnu.x11.Drawable; +import gnu.x11.GC; +import gnu.x11.image.ZPixmap; + +public class XGraphics2D + extends AbstractGraphics2D +{ + + /** + * When this property is set to true, then images are always rendered as + * opaque images, ignoring their translucence. This is intended for + * debugging and demonstration purposes. + */ + private static final boolean RENDER_OPAQUE = + Boolean.getBoolean("escherpeer.renderopaque"); + + /** + * The X Drawable to draw on. + */ + private Drawable xdrawable; + + /** + * The X graphics context (GC). + */ + private GC xgc; + + /** + * Indicates if this graphics has already been disposed. + */ + private boolean disposed; + + /** + * The current foreground color, possibly null. + */ + private Color foreground; + + XGraphics2D(Drawable d) + { + super(); + xdrawable = d; + xgc = new GC(d); + init(); + disposed = false; + //setClip(new Rectangle(0, 0, xdrawable.width, xdrawable.height)); + } + + @Override + protected void rawDrawLine(int x0, int y0, int x1, int y1) + { + xdrawable.segment(xgc, x0, y0, x1, y1); + } + + @Override + protected void rawDrawRect(int x, int y, int w, int h) + { + xdrawable.rectangle(xgc, x, y, w, h, false); + } + + @Override + protected void rawFillRect(int x, int y, int w, int h) + { + xdrawable.rectangle(xgc, x, y, w, h, true); + } + + /** + * Returns the color model of this Graphics object. + * + * @return the color model of this Graphics object + */ + protected ColorModel getColorModel() + { + return Toolkit.getDefaultToolkit().getColorModel(); + } + + /** + * Returns the color model of the target device. + * + * @return the color model of the target device + */ + protected ColorModel getDestinationColorModel() + { + return Toolkit.getDefaultToolkit().getColorModel(); + } + + /** + * Returns the bounds of the target. + * + * @return the bounds of the target + */ + protected Rectangle getDeviceBounds() + { + return new Rectangle(0, 0, xdrawable.width, xdrawable.height); + } + + public GraphicsConfiguration getDeviceConfiguration() + { + // FIXME: Implement this. + throw new UnsupportedOperationException("Not yet implemented"); + } + + public void dispose() + { + if (!disposed) + { + xgc.free(); + xdrawable.display.flush(); + disposed = true; + } + } + + public Graphics create() + { + // super.create() returns a copy created by clone(), so it should + // be a XGraphics2D. + XGraphics2D copy = (XGraphics2D) super.create(); + copy.xgc = xgc.copy(); + return copy; + } + + public void setClip(Shape c) + { + super.setClip(c); + if (c instanceof Rectangle) + { + Rectangle r = (Rectangle) c; + AffineTransform t = getTransform(); + int translateX = (int) t.getTranslateX(); + //System.err.println("translateX: " + translateX); + int translateY = (int) t.getTranslateY(); + //System.err.println("translateY: " + translateY); + //System.err.println("clip: " + c); + gnu.x11.Rectangle clip = new gnu.x11.Rectangle(r.x, r.y, r.width, + r.height); + xgc.set_clip_rectangles(translateX, translateY, + new gnu.x11.Rectangle[]{clip}, GC.UN_SORTED); + } + } + + /** + * Notifies the backend that the raster has changed in the specified + * rectangular area. The raster that is provided in this method is always + * the same as the one returned in {@link #getDestinationRaster}. + * Backends that reflect changes to this raster directly don't need to do + * anything here. + * + * @param raster the updated raster, identical to the raster returned + * by {@link #getDestinationRaster()} + * @param x the upper left corner of the updated region, X coordinate + * @param y the upper lef corner of the updated region, Y coordinate + * @param w the width of the updated region + * @param h the height of the updated region + */ + protected void updateRaster(Raster raster, int x, int y, int w, int h) + { + if (w > 0 && h > 0) + { + ZPixmap zPixmap = new ZPixmap(xdrawable.display, w, h, + xdrawable.display.default_pixmap_format); + int[] pixel = null; + int x1 = x + w; + int y1 = y + h; + for (int tx = x; tx < x1; tx++) + { + for (int ty = y; ty < y1; ty++) + { + pixel = raster.getPixel(tx, ty, pixel); + //System.err.println("tx: " + tx + ", ty: " + ty + ", pixel: " + pixel[0] + ", " + pixel[1] + ", " + pixel[2]); +// System.err.print("r: " + pixel[0]); +// System.err.print(", g: " + pixel[1]); +// System.err.println(", b: " + pixel[2]); + zPixmap.set_red(tx - x, ty - y, pixel[0]); + zPixmap.set_green(tx - x, ty - y, pixel[1]); + zPixmap.set_blue(tx - x, ty - y, pixel[2]); + } + } + xdrawable.put_image(xgc, zPixmap, x, y); + } + } + + @Override + public void renderScanline(int y, ScanlineCoverage c) + { + if (y >= xdrawable.height) + return; + + // TODO: Handle Composite and Paint. + ScanlineCoverage.Iterator iter = c.iterate(); + int coverageAlpha = 0; + int maxCoverage = c.getMaxCoverage(); + while (iter.hasNext()) + { + ScanlineCoverage.Range range = iter.next(); + + coverageAlpha = range.getCoverage(); + int x0 = range.getXPos(); + int l = range.getLength(); + if (coverageAlpha == c.getMaxCoverage()) + { + // Simply paint the current color over the existing pixels. + xdrawable.fill_rectangle(xgc, x0, y, l, 1); + } + else if (coverageAlpha > 0) + { + // Composite the current color with the existing pixels. + int x1 = x0 + l; + x0 = Math.min(Math.max(0, x0), xdrawable.width - 1); + x1 = Math.min(Math.max(0, x1), xdrawable.width - 1); + if ((x1 - x0) < 1) + continue; + l = x1 - x0; + gnu.x11.image.ZPixmap existing = (ZPixmap) + xdrawable.image(x0, y, l, 1, 0xFFFFFFFF, + gnu.x11.image.Image.Format.ZPIXMAP); + for (int x = 0; x < l; x++) + { + Color col = getColor(); + if (col == null) + { + col = Color.BLACK; + } + int red = col.getRed(); + int green = col.getGreen(); + int blue = col.getBlue(); + int redOut = existing.get_red(x, 0); + int greenOut = existing.get_green(x, 0); + int blueOut = existing.get_blue(x, 0); + int outAlpha = maxCoverage - coverageAlpha; + redOut = redOut * outAlpha + red * coverageAlpha; + redOut = redOut / maxCoverage; + greenOut = greenOut * outAlpha + green * coverageAlpha; + greenOut = greenOut / maxCoverage; + blueOut = blueOut * outAlpha + blue * coverageAlpha; + blueOut = blueOut / maxCoverage; + existing.set(x, 0, redOut, greenOut, blueOut); + } + xdrawable.put_image(xgc, existing, x0, y); + } + } + } + + protected void init() + { + super.init(); + } + + public void setPaint(Paint p) + { + super.setPaint(p); + if (p instanceof Color) + { + // TODO: Optimize for different standard bit-depths. + Color c = (Color) p; + /* XToolkit tk = (XToolkit) Toolkit.getDefaultToolkit(); + HashMap colorMap = tk.colorMap; + gnu.x11.Color col = (gnu.x11.Color) colorMap.get(c); + if (col == null) + { + Colormap map = xdrawable.display.default_colormap; + col = map.alloc_color (c.getRed() * 256, + c.getGreen() * 256, + c.getBlue() * 256); + colorMap.put(c, col); + }*/ + //xgc.set_foreground(col); + + xgc.set_foreground(c.getRGB()); + foreground = c; + } + } + + protected void fillShape(Shape s, boolean isFont) + { + synchronized (xdrawable.display) { + super.fillShape(s, isFont); + } + } + + private static WeakHashMap<Image,ZPixmap> imageCache = new WeakHashMap<Image,ZPixmap>(); + + protected boolean rawDrawImage(Image image, int x, int y, ImageObserver obs) + { + image = unwrap(image); + boolean ret; + if (image instanceof XImage) + { + XImage xImage = (XImage) image; + xdrawable.copy_area(xImage.pixmap, xgc, 0, 0, xImage.getWidth(obs), + xImage.getHeight(obs), x, y); + ret = true; + } + else if (image instanceof PixmapVolatileImage) + { + PixmapVolatileImage pvi = (PixmapVolatileImage) image; + xdrawable.copy_area(pvi.getPixmap(), xgc, 0, 0, pvi.getWidth(obs), + pvi.getHeight(obs), x, y); + ret = true; + } + else if (image instanceof BufferedImage) + { + BufferedImage bi = (BufferedImage) image; + DataBuffer db = bi.getRaster().getDataBuffer(); + if (db instanceof ZPixmapDataBuffer) + { + ZPixmapDataBuffer zpmdb = (ZPixmapDataBuffer) db; + ZPixmap zpixmap = zpmdb.getZPixmap(); + xdrawable.put_image(xgc, zpixmap, x, y); + ret = true; + } + else + { + int transparency = bi.getTransparency(); + int w = bi.getWidth(); + int h = bi.getHeight(); + if (imageCache.containsKey(image)) + { + ZPixmap zpixmap = imageCache.get(image); + xdrawable.put_image(xgc, zpixmap, x, y); + } + else if (transparency == Transparency.OPAQUE || RENDER_OPAQUE) + { + XGraphicsDevice gd = XToolkit.getDefaultDevice(); + ZPixmap zpixmap = new ZPixmap(gd.getDisplay(), w, h); + for (int yy = 0; yy < h; yy++) + { + for (int xx = 0; xx < w; xx++) + { + int rgb = bi.getRGB(xx, yy); + zpixmap.set(xx, yy, rgb); + } + } + xdrawable.put_image(xgc, zpixmap, x, y); + imageCache.put(image, zpixmap); + } else { + + // TODO optimize reusing the rectangles + Rectangle source = + new Rectangle(0, 0, xdrawable.width, xdrawable.height); + Rectangle target = new Rectangle(x, y, w, h); + + Rectangle destination = source.intersection(target); + + x = destination.x; + y = destination.y; + w = destination.width; + h = destination.height; + + ZPixmap zpixmap = + (ZPixmap) xdrawable.image(x, y, w, h, + 0xffffffff, + gnu.x11.image.Image.Format.ZPIXMAP); + for (int yy = 0; yy < h; yy++) + { + for (int xx = 0; xx < w; xx++) + { + int rgb = bi.getRGB(xx, yy); + int alpha = 0xff & (rgb >> 24); + if (alpha == 0) + { + // Completely translucent. + rgb = zpixmap.get_red(xx, yy) << 16 + | zpixmap.get_green(xx, yy) << 8 + | zpixmap.get_blue(xx, yy); + } + else if (alpha < 255) + { + // Composite pixels. + int red = 0xff & (rgb >> 16); + red = red * alpha + + (255 - alpha) * zpixmap.get_red(xx, yy); + red = red / 255; + int green = 0xff & (rgb >> 8); + green = green * alpha + + (255 - alpha) * zpixmap.get_green(xx, yy); + green = green / 255; + int blue = 0xff & rgb; + blue = blue * alpha + + (255 - alpha) * zpixmap.get_blue(xx, yy); + blue = blue / 255; + rgb = red << 16 | green << 8 | blue; + } + // else keep rgb value from source image. + + zpixmap.set(xx, yy, rgb); + } + } + xdrawable.put_image(xgc, zpixmap, x, y); + // We can't cache prerendered translucent images, because + // we never know how the background changes. + } + ret = true; + } + } + else + { + ret = super.rawDrawImage(image, x, y, obs); + } + return ret; + } + + public void setFont(Font f) + { + super.setFont(f); + FontPeer p = getFont().getPeer(); + if (p instanceof XFontPeer) + { + XFontPeer xFontPeer = (XFontPeer) p; + xgc.set_font(xFontPeer.getXFont()); + } + } + + public void drawString(String s, int x, int y) + { + FontPeer p = getFont().getPeer(); + if (p instanceof XFontPeer) + { + int tx = (int) transform.getTranslateX(); + int ty = (int) transform.getTranslateY(); + xdrawable.text(xgc, x + tx, y + ty, s); + } + else + { + super.drawString(s, x, y); + } + } + + /** + * Extracts an image instance out of an AsyncImage. If the image isn't + * an AsyncImage, then the original instance is returned. + * + * @param im the image + * + * @return the image to render + */ + private Image unwrap(Image im) + { + Image image = im; + if (image instanceof AsyncImage) + { + AsyncImage aIm = (AsyncImage) image; + image = aIm.getRealImage(); + } + return image; + } + +} + |