网页三剑客完美结合教程

import java.awt.*; import java.lang.String; import java.applet.Applet; import java.applet.AppletContext; import java.net.MalformedURLException; import java.net.URL; public class Lake extends Applet implements Runnable { Thread m_Lake; private Graphics m_Graphics; private Graphics m_WaveGraphics; private Image m_Image; private Image m_Overlay; private Image m_WaveImage; private int m_nCurrImage; private int m_nImgWidth; private int m_nImgHeight; private int m_nOvlWidth; private int m_nOvlHeight; private boolean m_fAllLoaded; private boolean m_tAnimate; private final int NUM_FRAMES = 12; private String m_ImageName; private String m_OverlayName; private URL m_HRef; private String m_Frame; private final String PARAM_image = "image"; private final String PARAM_overlay = "overlay"; private final String PARAM_href = "href"; private final String PARAM_target = "target"; public void createAnimation() { Image image = createImage(m_nImgWidth, m_nImgHeight + 1); Graphics g = image.getGraphics(); g.drawImage(m_Image, 0, 1, this); for (int i = 0; i < m_nImgHeight >> 1; i++) { g.copyArea(0, i, m_nImgWidth, 1, 0, m_nImgHeight - i); g.copyArea(0, m_nImgHeight - 1 - i, m_nImgWidth, 1, 0, -m_nImgHeight + 1 + (i << 1)); g.copyArea(0, m_nImgHeight, m_nImgWidth, 1, 0, -1 - i); } m_WaveImage = createImage(13 * m_nImgWidth, m_nImgHeight); m_WaveGraphics = m_WaveImage.getGraphics(); m_WaveGraphics.drawImage(image, 12 * m_nImgWidth, 0, this); int j = 0; do makeWaves(m_WaveGraphics, j); while (++j < 12); g.drawImage(m_Image, 0, 1, this); if (!"".equals(m_OverlayName)) g.drawImage(m_Overlay, m_nImgWidth - m_nOvlWidth >> 1, m_nImgHeight - (m_nOvlHeight >> 1), this); m_Image = image; } public void start() { if (m_Lake == null) { m_Lake = new Thread(this); m_Lake.start(); } } public String[][] getParameterInfo() { String aastring[][] = { { "image", "String", "JPG or GIF file to reflect" }, { "overlay", "String", "JPG or GIF file to use as overlay" }, { "href", "URL", "URL to link to" }, { "target", "String", "Target frame" } }; return aastring; } public void stop() { if (m_Lake != null) { m_Lake.stop(); m_Lake = null; } } private void displayImage(Graphics g) { if (!m_fAllLoaded) return; if (m_WaveImage != null) { g.drawImage(m_WaveImage, -m_nCurrImage * m_nImgWidth, m_nImgHeight, this); g.drawImage(m_WaveImage, (12 - m_nCurrImage) * m_nImgWidth, m_nImgHeight, this); } g.drawImage(m_Image, 0, -1, this); } public String getAppletInfo() { return "Name: Lake v3.0\r\n" + "Author: David Griffiths\r\n" + "Created with Microsoft Visual J++ Version 1.0"; } public boolean mouseUp(Event event, int i, int j) { super.mouseUp(event, i, j); if (m_HRef == null) m_tAnimate = !m_tAnimate; else { showStatus("" + m_HRef); getAppletContext().showDocument(m_HRef, m_Frame); } return true; } public void run() { m_nCurrImage = 0; if (!m_fAllLoaded) { repaint(); m_Graphics = getGraphics(); MediaTracker mediaTracker = new MediaTracker(this); m_Image = getImage(getDocumentBase(), m_ImageName); if (!"".equals(m_OverlayName)) m_Overlay = getImage(getDocumentBase(), m_OverlayName); mediaTracker.addImage(m_Image, 0); if (!"".equals(m_OverlayName)) mediaTracker.addImage(m_Overlay, 1); try { mediaTracker.waitForAll(); m_fAllLoaded = !mediaTracker.isErrorAny(); } catch (InterruptedException e1) { } if (!m_fAllLoaded) { stop(); m_Graphics.drawString("Error loading images!", 10, 40); return; } m_nImgWidth = m_Image.getWidth(this); m_nImgHeight = m_Image.getHeight(this); if (!"".equals(m_OverlayName)) { m_nOvlWidth = m_Overlay.getWidth(this); m_nOvlHeight = m_Overlay.getHeight(this); } createAnimation(); } repaint(); while (true) { try { while (!m_tAnimate) Thread.sleep(500); displayImage(m_Graphics); if (++m_nCurrImage == 12) m_nCurrImage = 0; Thread.sleep(50); } catch (InterruptedException e2) { stop(); } } } public void makeWaves(Graphics g, int i1) { double d = 6.28319 * i1 / 12; int j = (12 - i1) * m_nImgWidth; for (int i2 = 0; i2 < m_nImgHeight; i2++) { int k = (int)((double)(m_nImgHeight / 14) * ((double)i2 + 28) * Math.sin((double)(m_nImgHeight / 14 * (m_nImgHeight - i2)) / (i2 + 1) + d) / m_nImgHeight); if (i2 < -k) g.copyArea(12 * m_nImgWidth, i2, m_nImgWidth, 1, -j, 0); else g.copyArea(12 * m_nImgWidth, i2 + k, m_nImgWidth, 1, -j, -k); } if (!"".equals(m_OverlayName)) g.drawImage(m_Overlay, i1 * m_nImgWidth + (m_nImgWidth - m_nOvlWidth >> 1), -m_nOvlHeight >> 1, this); } public Lake() { m_tAnimate = true; m_ImageName = ""; m_OverlayName = ""; m_Frame = "_self"; } public void destroy() { } public void init() { String string = getParameter("image"); if (string != null) m_ImageName = string; string = getParameter("overlay"); if (string != null) m_OverlayName = string; string = getParameter("href"); if (string != null) { try { m_HRef = new URL(getDocumentBase(), string); } catch (MalformedURLException e) { getAppletContext().showStatus("Bad URL: " + string); return; } } string = getParameter("target"); if (string != null) m_Frame = string; } public void paint(Graphics g) { if (m_fAllLoaded) { displayImage(g); return; } g.drawString("Loading images...", 10, 20); } }