diff options
Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/java/awt/image/XBMDecoder.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/java/awt/image/XBMDecoder.java | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/image/XBMDecoder.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/image/XBMDecoder.java new file mode 100644 index 000000000..0793d8ee7 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/java/awt/image/XBMDecoder.java @@ -0,0 +1,155 @@ +/* XBMDecoder.java -- Decodes X-bitmaps + Copyright (C) 1999, 2004 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.image; + +import java.awt.image.ColorModel; +import java.awt.image.ImageConsumer; +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.Reader; +import java.net.URL; +import java.util.StringTokenizer; +import java.util.Vector; + +public class XBMDecoder extends ImageDecoder +{ + BufferedReader reader; + static final ColorModel cm = ColorModel.getRGBdefault (); + static final int black = 0xff000000; + static final int transparent = 0x00000000; + static final int masktable[] = { 0x01, 0x02, 0x04, 0x08, + 0x10, 0x20, 0x40, 0x80 }; + + public XBMDecoder (String filename) + { + super (filename); + } + + public XBMDecoder (URL url) + { + super (url); + } + + public void produce (Vector v, InputStream is) throws IOException + { + reader = new BufferedReader (new InputStreamReader (is)); + int width = -1, height = -1; + + for (int i = 0; i < 2; i++) + { + String line = reader.readLine (); + StringTokenizer st = new StringTokenizer (line); + + st.nextToken (); // #define + st.nextToken (); // name_[width|height] + if (i == 0) + width = Integer.parseInt (st.nextToken (), 10); + else + height = Integer.parseInt (st.nextToken (), 10); + } + + for (int i = 0; i < v.size (); i++) + { + ImageConsumer ic = (ImageConsumer) v.elementAt (i); + + ic.setDimensions (width, height); + ic.setColorModel (cm); + ic.setHints (ImageConsumer.COMPLETESCANLINES + | ImageConsumer.SINGLEFRAME + | ImageConsumer.SINGLEPASS + | ImageConsumer.TOPDOWNLEFTRIGHT); + } + + /* skip to the byte array */ + while (reader.read () != '{') { } + + /* loop through each scanline */ + for (int line = 0; line < height; line++) + { + int scanline[] = getScanline (reader, width); + + for (int i = 0; i < v.size (); i++) + { + ImageConsumer ic = (ImageConsumer) v.elementAt (i); + ic.setPixels (0, 0 + line, width, 1, cm, scanline, 0, width); + } + } + + /* tell each ImageConsumer that we're finished */ + for (int i = 0; i < v.size (); i++) + { + ImageConsumer ic = (ImageConsumer) v.elementAt (i); + ic.imageComplete (ImageConsumer.STATICIMAGEDONE); + } + } + + public static int[] getScanline (Reader in, int len) throws IOException + { + char byteStr[] = new char[2]; + int scanline[] = new int[len]; + int x = 0; + + while (x < len) + { + int ch = in.read (); + if (ch == '0') + { + in.read (); // 'x' + + byteStr[0] = (char) in.read (); + byteStr[1] = (char) in.read (); + + int byteVal = Integer.parseInt (new String (byteStr), 16); + + for (int i = 0; i < 8; i++, x++) + { + if (x == len) // condition occurs if bitmap is padded + return scanline; + + scanline[x] = ((byteVal & masktable[i]) != 0) ? + black : transparent; + } + } + } + + return scanline; + } +} |