// Collage.java
// -----------------------
// part of YaCy
// (C) by Detlef Reichl; detlef!reichl()gmx!org
// Pforzheim, Germany, 2008
//
//$LastChangedDate$
//$LastChangedRevision$
//$LastChangedBy$
//
// This program 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 of the License, or
// (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import java.util.Random;
import net.yacy.cora.document.id.MultiProtocolURL;
import net.yacy.cora.protocol.Domains;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.crawler.data.ResultImages;
import net.yacy.search.Switchboard;
import net.yacy.search.SwitchboardConstants;
import net.yacy.server.serverObjects;
import net.yacy.server.serverSwitch;
public class Collage {
private static int fifoMax = 20;
private static int fifoPos = -1;
private static int fifoSize = 0;
private static long zIndex = 0;
private static ResultImages.OriginEntry origins[] = new ResultImages.OriginEntry[fifoMax];
private static Integer imgWidth[] = new Integer[fifoMax];
private static Integer imgHeight[] = new Integer[fifoMax];
private static Integer imgPosX[] = new Integer[fifoMax];
private static Integer imgPosY[] = new Integer[fifoMax];
private static long imgZIndex[] = new long[fifoMax];
private static final Random rand = new Random();
public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
final serverObjects prop = new serverObjects();
final Switchboard sb = (Switchboard) env;
final boolean authenticated = sb.verifyAuthentication(header);
final ResultImages.OriginEntry nextOrigin = ResultImages.next(!authenticated);
int posXMax = 800;
int posYMax = 500;
boolean embed = false;
if (post != null) {
embed = post.containsKey("emb");
posXMax = post.getInt("width", posXMax);
posYMax = post.getInt("height", posYMax);
if (post.containsKey("max")) fifoMax = post.getInt("max", fifoMax);
}
prop.put("emb", (embed) ? "0" : "1");
if (nextOrigin != null) {
if (fifoSize == 0 || origins[fifoPos] != nextOrigin) {
fifoPos = fifoPos + 1 >= fifoMax ? 0 : fifoPos + 1;
fifoSize = fifoSize + 1 > fifoMax ? fifoMax : fifoSize + 1;
origins[fifoPos] = nextOrigin;
final float scale = rand.nextFloat() * 1.5f + 1;
imgWidth[fifoPos] = (int) ((nextOrigin.imageEntry.width()) / scale);
imgHeight[fifoPos] = (int) ((nextOrigin.imageEntry.height()) / scale);
imgPosX[fifoPos] = rand.nextInt((imgWidth[fifoPos] == 0) ? posXMax / 2 : Math.max(1, posXMax - imgWidth[fifoPos]));
imgPosY[fifoPos] = rand.nextInt((imgHeight[fifoPos] == 0) ? posYMax / 2 : Math.max(1, posYMax - imgHeight[fifoPos]));
imgZIndex[fifoPos] = zIndex;
zIndex += 1;
}
}
if (fifoSize > 0) {
prop.put("imgurl", "1");
int c = 0;
final int yOffset = embed ? 0 : 70;
for (int i = 0; i < fifoSize; i++) {
final MultiProtocolURL baseURL = origins[i].baseURL;
final MultiProtocolURL imageURL = origins[i].imageEntry.url();
// check if this loads a page from localhost, which must be prevented to protect the server
// against attacks to the administration interface when localhost access is granted
if ((Domains.isLocal(baseURL.getHost(), null) || Domains.isLocal(imageURL.getHost(), null)) &&
sb.getConfigBool(SwitchboardConstants.ADMIN_ACCOUNT_FOR_LOCALHOST, false)) continue;
final long z = imgZIndex[i];
prop.put("imgurl_list_" + c + "_url",
"<a href=\"" + baseURL.toNormalform(true) + "\" class=\"forceNoExternalIcon\">"
+ "<img src=\"" + imageURL.toNormalform(true) + "\" "
+ "style=\""
+ ((imgWidth[i] == 0 || imgHeight[i] == 0) ? "" : "width:" + imgWidth[i] + "px;height:" + imgHeight[i] + "px;")
+ "position:absolute;top:" + (imgPosY[i] + yOffset)
+ "px;left:" + imgPosX[i]
+ "px;z-index:" + z + "\" "
+ "id=\"col" + z + "\" "
+ "alt=\"" + baseURL.toNormalform(true) + "\" "
+ "onmouseover=\"raise(" + z + ")\" onmouseout=\"lower(" + z + ")\" "
+ "title=\"" + baseURL.toNormalform(true) + "\" />"
+ "</a><br />");
c++;
}
prop.put("imgurl_list", c);
} else {
prop.put("imgurl", "0");
}
prop.putNum("refresh", Math.max(2, Math.min(5, 500 / (1 + ResultImages.queueSize(!authenticated)))));
prop.put("emb_privateQueueSize", ResultImages.privateQueueHighSize() + "+" + ResultImages.privateQueueLowSize());
prop.put("emb_publicQueueSize", ResultImages.publicQueueHighSize() + "+" + ResultImages.publicQueueLowSize());
return prop;
}
}