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yacy_search_server
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fix for graphics generation bug, see http://www.yacy-forum.de/viewtopic.php?p=10987#10987

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git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@886 6c8d7289-2bf4-0310-a012-ef5d649a1542
pull/1/head
orbiter 19 years ago
parent d666b61b83
commit 16a49c1c9d
2 changed files with 65 additions and 40 deletions
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31
source/de/anomic/http/httpdFileHandler.java
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@ -417,19 +417,24 @@ public final class httpdFileHandler extends httpdAbstractHandler implements http
e.getTargetException().getMessage(),e); e.getTargetException().getMessage(),e);
targetClass = null; targetClass = null;
} }
targetDate = new Date(System.currentTimeMillis()); if (bi == null) {
String mimeType = mimeTable.getProperty(targetExt,"text/html"); // error with image generation; send file-not-found
httpd.sendRespondError(this.connectionProperties,out,3,404,"File not Found",null,null);
// generate an byte array from the generated image } else {
ByteArrayOutputStream baos = new ByteArrayOutputStream(); // send an image to client
ImageIO.write(bi, targetExt, baos); targetDate = new Date(System.currentTimeMillis());
byte[] result = baos.toByteArray(); String mimeType = mimeTable.getProperty(targetExt,"text/html");
// write the array to the client // generate an byte array from the generated image
httpd.sendRespondHeader(this.connectionProperties, out, "HTTP/1.1", 200, null, mimeType, result.length, targetDate, null, null, null, null); ByteArrayOutputStream baos = new ByteArrayOutputStream();
Thread.currentThread().sleep(200); // see below ImageIO.write(bi, targetExt, baos);
serverFileUtils.write(result, out); byte[] result = baos.toByteArray();
// write the array to the client
httpd.sendRespondHeader(this.connectionProperties, out, "HTTP/1.1", 200, null, mimeType, result.length, targetDate, null, null, null, null);
Thread.currentThread().sleep(200); // see below
serverFileUtils.write(result, out);
}
} else if ((targetFile.exists()) && (targetFile.canRead())) { } else if ((targetFile.exists()) && (targetFile.canRead())) {
// we have found a file that can be written to the client // we have found a file that can be written to the client
// if this file uses templates, then we use the template // if this file uses templates, then we use the template

74
source/de/anomic/tools/ImagePainter.java
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@ -349,39 +349,59 @@ public class ImagePainter {
GraphicsDevice gs = ge.getDefaultScreenDevice(); GraphicsDevice gs = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gs.getDefaultConfiguration(); GraphicsConfiguration gc = gs.getDefaultConfiguration();
BufferedImage bi = gc.createCompatibleImage(width, height, Transparency.TRANSLUCENT); BufferedImage bi = gc.createCompatibleImage(width, height, Transparency.TRANSLUCENT);
*/ */
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); try {
Graphics2D gr = bi.createGraphics(); BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
gr.setBackground(Color.white); Graphics2D gr = bi.createGraphics();
gr.clearRect(0, 0, width, height); gr.setBackground(Color.white);
gr.clearRect(0, 0, width, height);
WritableRaster wr = bi.getRaster();
long c; WritableRaster wr = bi.getRaster();
if (complementary) { long c;
int r, g, b; if (complementary) {
// then set pixels int r, g, b;
for (int i = width - 1; i >= 0; i--) { // then set pixels
for (int j = height - 1; j >= 0; j--) { for (int i = width - 1; i >= 0; i--) {
c = grid[i + j * width]; for (int j = height - 1; j >= 0; j--) {
if (c >= 0) { c = grid[i + j * width];
r = (int) (c >> 16); if (c >= 0) {
g = (int) ((c >> 8) & 0xff); r = (int) (c >> 16);
b = (int) (c & 0xff); g = (int) ((c >> 8) & 0xff);
wr.setPixel(i, j, new int[]{(0x1fe - g - b) / 2, (0x1fe - r - b) / 2, (0x1fe - r - g) / 2}); b = (int) (c & 0xff);
wr.setPixel(i, j, new int[]{(0x1fe - g - b) / 2, (0x1fe - r - b) / 2, (0x1fe - r - g) / 2});
}
} }
} }
} } else {
} else { for (int i = width - 1; i >= 0; i--) {
for (int i = width - 1; i >= 0; i--) { for (int j = height - 1; j >= 0; j--) {
for (int j = height - 1; j >= 0; j--) { c = grid[i + j * width];
c = grid[i + j * width]; if (c >= 0) {
if (c >= 0) { wr.setPixel(i, j, new int[]{(int) (c >> 16), (int) ((c >> 8) & 0xff), (int) (c & 0xff)});
wr.setPixel(i, j, new int[]{(int) (c >> 16), (int) ((c >> 8) & 0xff), (int) (c & 0xff)}); }
} }
} }
} }
return bi;
} catch (Exception e) {
// strange case where environment disallowes generation of graphics
/*
java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java:53)
at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:142)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1141)
at de.anomic.tools.ImagePainter.toImage(ImagePainter.java:354)
*/
System.out.println("Error with Graphics environment:");
e.printStackTrace();
return new BufferedImage(0, 0, BufferedImage.TYPE_INT_RGB);
} }
return bi;
} }
} }

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