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/* * @(#)ImageChanger.java * * Copyright (c) 1996,1997 NAKAGAWA Masami * * Permission to use, copy, modify, and distribute this software * for NON-COMMERCIAL purpose and without fee is hereby granted. */ import java.applet.*; import java.awt.*; import java.awt.image.*; import java.util.*; import java.net.*; /** A class of GIF(JPEG) image changer to decorate a Web page * @author NAKAGAWA Masami * @version 2.01, 9 Aug 1997 */ public class ImageChanger extends Applet implements Runnable { final int FADEMAX = 16; final int FADEWID = 64; final int EFFECTNUM = 20; final int PADX = 10; final int PADY = 10; final int NONE = 0; final int SCROLLUP = 1; final int SCROLLDOWN = 2; final int SCROLLRIGHT = 3; final int SCROLLLEFT = 4; final int TEARVERTICAL = 5; final int TEARHORIZONTAL = 6; final int OPEN = 7; final int CLOSE = 8; final int FADE = 9; final int MOSAIC = 10; final int TEARUP = 11; final int TEARDOWN = 12; final int TEARRIGHT = 13; final int TEARLEFT = 14; final int SLIDEUP = 15; final int SLIDEDOWN = 16; final int SLIDERIGHT = 17; final int SLIDELEFT = 18; final int SHRINKVERTICAL = 19; final int SHRINKHORIZONTAL = 20; Dimension mySize; MediaTracker tracker; Image[] images; String[] imageFile; int[] change; int[] time; String imageDir = "."; int imageNum; int defaultChange; int defaultTime = 5000; Color fadeColor = Color.black; Color bgColor = Color.black; Color fontColor = Color.white; Color fontShadowColor; Color fontLineColor; Color fontBackColor; int scrollSpeed = 6; int changeSpeed = 3; int fadeTime = 80; Image[] fadeImage = new Image[FADEMAX]; Image mosaicImage; Thread kicker; int current; Graphics offScreen; Graphics onScreen; Image offImage; boolean drawWhileLoading = true; int mosaicWidth = 16; int mosaicHeight = 16; int mosaicSpeed = 4; Random rand; URL[] url; boolean randomOrder = false; boolean randomEffect = false; boolean cursorIn = false; boolean autoLink = false; boolean linked = false; AppletContext context; String[] title; Point[] titlePos; Rectangle[] titleBackArea; Font font; FontMetrics metrics; String target; String frame; public void init() { setBackground(bgColor); String s; s = getParameter("imageDir"); if (s != null) imageDir = s; s = getParameter("change"); if (s != null) defaultChange = Integer.parseInt(s); s = getParameter("time"); if (s != null) defaultTime = Integer.parseInt(s); s = getParameter("fadeColor"); if (s != null) fadeColor = new Color(Integer.parseInt(s, 16)); s = getParameter("bgColor"); if (s != null) bgColor = new Color(Integer.parseInt(s, 16)); s = getParameter("fontColor"); if (s != null) fontColor = new Color(Integer.parseInt(s, 16)); s = getParameter("fontLineColor"); if (s != null) fontLineColor = new Color(Integer.parseInt(s, 16)); s = getParameter("fontShadowColor"); if (s != null) fontShadowColor = new Color(Integer.parseInt(s, 16)); s = getParameter("fontBackColor"); if (s != null) fontBackColor = new Color(Integer.parseInt(s, 16)); s = getParameter("scrollSpeed"); if (s != null) scrollSpeed = Integer.parseInt(s); s = getParameter("changeSpeed"); if (s != null) changeSpeed = Integer.parseInt(s); s = getParameter("fadeTime"); if (s != null) fadeTime = Integer.parseInt(s) / FADEMAX; s = getParameter("drawWhileLoading"); if (s != null) drawWhileLoading = Boolean.valueOf(s).booleanValue(); s = getParameter("mosaicWidth"); if (s != null) mosaicWidth = Integer.parseInt(s); s = getParameter("mosaicHeight"); if (s != null) mosaicHeight = Integer.parseInt(s); s = getParameter("mosaicSpeed"); if (s != null) mosaicSpeed = Integer.parseInt(s); s = getParameter("randomOrder"); if (s != null) randomOrder = Boolean.valueOf(s).booleanValue(); s = getParameter("randomEffect"); if (s != null) randomEffect = Boolean.valueOf(s).booleanValue(); s = getParameter("fontSize"); font = new Font("Dialog", Font.PLAIN, (s == null)?12:Integer.parseInt(s)); s = getParameter("target"); if (s != null) target = s; s = getParameter("frame"); if (s != null) frame = s; s = getParameter("autoLink"); if (s != null) autoLink = Boolean .valueOf(s).booleanValue(); mySize = size(); rand = new Random(); context = getAppletContext(); initImages(); initTitles(); } private void initImages() { String s = getParameter("images"); StringTokenizer t1 = new StringTokenizer(s, ","); imageNum = t1.countTokens(); images = new Image[imageNum]; imageFile = new String[imageNum]; change = new int[imageNum]; time = new int[imageNum]; url = new URL[imageNum]; int count = 0; while (t1.hasMoreTokens()) { s = t1.nextToken(); StringTokenizer t2 = new StringTokenizer(s, "|"); imageFile[count] = t2.nextToken().trim(); change[count] = defaultChange; if (t2.hasMoreTokens()) { s = t2.nextToken().trim(); try { if (s != null && !s.equals("-")) change[count] = Integer.parseInt(s); } catch (NumberFormatException e) { } } time[count] = defaultTime; if (t2.hasMoreTokens()) { s = t2.nextToken().trim(); try { if (s != null && !s.equals("-")) time[count] = Integer.parseInt(s); } catch (NumberFormatException e) { } } if (t2.hasMoreTokens()) { s = t2.nextToken().trim(); try { if (s != null && !s.equals("-")) url[count] = new URL(s); } catch (MalformedURLException e) { try { url[count] = new URL(getDocumentBase(), s); } catch (MalformedURLException ex) { } } } count++; } } private void initTitles() { int count = 0; title = new String[imageNum]; titlePos = new Point[imageNum]; if (fontBackColor != null) { titleBackArea = new Rectangle[imageNum]; } metrics = getFontMetrics(font); String s = getParameter("titles"); if (s != null) { StringTokenizer st1 = new StringTokenizer(s, ","); while (st1.hasMoreTokens()) { String t = st1.nextToken(); if (!t.equals("-")) { StringTokenizer st2 = new StringTokenizer(t, "|"); if (st2.hasMoreTokens()) { title[count] = st2.nextToken(); int x = PADX; int y = PADY + metrics.getAscent(); int width = metrics.stringWidth(title[count]); int height = metrics.getAscent(); if (st2.hasMoreTokens()) { String u = st2.nextToken(); if ("n".equals(u)) { x = (mySize.width - width) / 2; y = PADY + height; } else if ("ne".equals(u)) { x = mySize.width - PADX - width; y = PADY + height; } else if ("c".equals(u)) { x = (mySize.width - width) / 2; y = (mySize.height + height) / 2; } else if ("sw".equals(u)) { x = PADX; y = mySize.height - PADY; } else if ("s".equals(u)) { x = (mySize.width - width) / 2; y = mySize.height - PADY; } else if ("se".equals(u)) { x = mySize.width - PADX - width; y = mySize.height - PADY; } } titlePos[count] = new Point(x, y); if (fontBackColor != null) { titleBackArea[count] = new Rectangle(x - 5, y - height - 5, width + 10, height + 10); }