package net.yacy.peers.graphics; import java.awt.image.BufferedImage; import java.text.DecimalFormat; import java.text.DecimalFormatSymbols; import java.text.NumberFormat; import net.yacy.visualization.PrintTool; import net.yacy.visualization.RasterPlotter; /** * Creates banner which displays data about peer and network. */ public final class Banner { private static final String QUERIES_HOUR = " QUERIES/HOUR"; private static final String PAGES_MINUTE = " PAGES/MINUTE"; private static final String QUERIES = "QUERIES:"; private static final String WORDS = "WORDS:"; private static final String LINKS = "LINKS:"; private static final String NETWORK = "NETWORK:"; private static final String SPEED = "SPEED:"; private static final String TYPE = "TYPE:"; private static final String DHT_WORDS = "DHT WORDS:"; private static final String DOCUMENTS = "DOCUMENTS:"; private static final String PEER_NAME = "PEER:"; private static final int EXPR_LEN = 26; /** Private constructor to avoid instantiation of utility class. */ private Banner() { } /** Always use dot as decimal separator since * banner text is always in English. */ private static final DecimalFormatSymbols DFS = new DecimalFormatSymbols(); static { DFS.setDecimalSeparator('.'); DFS.setGroupingSeparator(','); } private static final NumberFormat QPM_FORMAT = new DecimalFormat("0.00", DFS); private static final NumberFormat LARGE_NUMBER_FORMAT = new DecimalFormat("#,###", DFS); private static RasterPlotter bannerPicture = null; private static BufferedImage logo = null; private static long bannerPictureDate = 0; /** * Creates new banner image if max age has been reached, else returns cached version. * @param data data to display * @param maxAge age in ms since 01.01.1970 * @return banner image */ public static RasterPlotter getBannerPicture( final BannerData data, final long maxAge) { if (bannerPicture == null || bannerOutdated(maxAge)) { drawBannerPicture(data, logo); } return bannerPicture; } /** * Creates new banner image if max age has been reached, else returns cached version. * @param data data to display * @param maxAge age in ms since 01.01.1970 * @param newLogo logo to display * @return banner image */ public static RasterPlotter getBannerPicture( final BannerData data, final long maxAge, final BufferedImage newLogo) { if (bannerPicture == null || bannerOutdated(maxAge)) { drawBannerPicture(data, newLogo); } return bannerPicture; } private static boolean bannerOutdated(final long maxAge) { return (System.currentTimeMillis() - bannerPictureDate) > maxAge; } private static void drawBannerPicture(final BannerData data, final BufferedImage newLogo) { logo = newLogo; bannerPicture = new RasterPlotter( data.getWidth(), data.getHeight(), RasterPlotter.DrawMode.MODE_REPLACE, data.getBgcolor()); // draw description bannerPicture.setColor(data.getTextcolor()); PrintTool.print(bannerPicture, 100, 12, 0, PEER_NAME + addBlanks(data.getName(), PEER_NAME.length()), -1); PrintTool.print(bannerPicture, 100, 22, 0, DOCUMENTS + addBlanksAndDots(data.getLinks(), DOCUMENTS.length()), -1); PrintTool.print(bannerPicture, 100, 32, 0, DHT_WORDS + addBlanksAndDots(data.getWords(), DHT_WORDS.length()), -1); PrintTool.print(bannerPicture, 100, 42, 0, TYPE + addBlanks(data.getType(), TYPE.length()), -1); PrintTool.print(bannerPicture, 100, 52, 0, SPEED + addBlanks(data.getPpm() + PAGES_MINUTE, SPEED.length()), -1); PrintTool.print(bannerPicture, 290, 12, 0, NETWORK + addBlanks(data.getNetwork() + " [" + data.getPeers() + "]", NETWORK.length()), -1); PrintTool.print(bannerPicture, 290, 22, 0, LINKS + addBlanksAndDots(data.getNlinks(), LINKS.length()), -1); PrintTool.print(bannerPicture, 290, 32, 0, WORDS + addBlanksAndDots(data.getNwords(), WORDS.length()), -1); PrintTool.print(bannerPicture, 290, 42, 0, QUERIES + addBlanks(formatQpm(data.getNqph()) + QUERIES_HOUR, QUERIES.length()), -1); PrintTool.print(bannerPicture, 290, 52, 0, SPEED + addBlanks(data.getNppm() + PAGES_MINUTE, SPEED.length()), -1); final int height = data.getHeight(); final int width = data.getWidth(); if (logo != null) { final int x = (100 / 2 - logo.getWidth() / 2); final int y = (height / 2 - logo.getHeight() / 2); bannerPicture.insertBitmap(logo, x, y, 0, 0, RasterPlotter.FilterMode.FILTER_ANTIALIASING); } bannerPicture.setColor(data.getBordercolor()); bannerPicture.line(0, 0, 0, height - 1, 100); bannerPicture.line(0, 0, width - 1, 0, 100); bannerPicture.line(width - 1, 0, width - 1, height - 1, 100); bannerPicture.line(0, height - 1, width - 1, height - 1, 100); // set timestamp bannerPictureDate = System.currentTimeMillis(); } private static String addBlanksAndDots(final long input, final int length) { return addBlanks(LARGE_NUMBER_FORMAT.format(input), length); } private static String addBlanks(final String word, final int offset) { return String.format(String.format("%%%ds", (EXPR_LEN - offset)), word); } private static String formatQpm(final double qpm) { return (qpm < 10) ? QPM_FORMAT.format(qpm) : Long.toString(Math.round(qpm)); } /** * Tells if a logo has been set. * @return true if logo has been set, else false */ public static boolean logoIsLoaded() { return logo != null; } }