Java tutorial
/* * Copyright 2000-2012 JetBrains s.r.o. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.intellij.ide.actions; import com.intellij.ide.BrowserUtil; import com.intellij.ide.IdeBundle; import com.intellij.openapi.application.ApplicationInfo; import com.intellij.openapi.application.ex.ApplicationInfoEx; import com.intellij.openapi.application.impl.ApplicationInfoImpl; import com.intellij.openapi.ide.CopyPasteManager; import com.intellij.openapi.util.IconLoader; import com.intellij.openapi.util.Ref; import com.intellij.openapi.util.SystemInfo; import com.intellij.openapi.util.text.StringUtil; import com.intellij.openapi.wm.IdeFocusManager; import com.intellij.ui.ClickListener; import com.intellij.ui.UI; import com.intellij.util.text.DateFormatUtil; import com.intellij.util.ui.UIUtil; import javax.swing.*; import java.awt.*; import java.awt.datatransfer.StringSelection; import java.awt.event.*; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.List; import java.util.Properties; /** * @author Konstantin Bulenkov */ @SuppressWarnings("SSBasedInspection") public class AboutDialog extends JDialog { public AboutDialog(Window owner) { super(owner); init(owner); } private void init(Window window) { ApplicationInfoEx appInfo = (ApplicationInfoEx) ApplicationInfo.getInstance(); JPanel mainPanel = new JPanel(new BorderLayout()); final JComponent closeListenerOwner; Icon image = IconLoader.getIcon(appInfo.getAboutImageUrl()); final InfoSurface infoSurface = new InfoSurface(image); infoSurface.setPreferredSize(new Dimension(image.getIconWidth(), image.getIconHeight())); mainPanel.add(infoSurface, BorderLayout.NORTH); closeListenerOwner = infoSurface; setUndecorated(true); setContentPane(mainPanel); final Ref<Long> showTime = Ref.create(System.currentTimeMillis()); addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { int code = e.getKeyCode(); if (code == KeyEvent.VK_ESCAPE && e.getModifiers() == 0) { dispose(); } else if (infoSurface != null) { if (code == KeyEvent.VK_CONTROL || code == KeyEvent.VK_META) { showTime.set(System.currentTimeMillis()); e.consume(); } else if ((code == KeyEvent.VK_C && (e.isControlDown() || e.isMetaDown())) || (!SystemInfo.isMac && code == KeyEvent.VK_INSERT && e.isControlDown())) { copyInfoToClipboard(infoSurface.getText()); showTime.set(System.currentTimeMillis()); e.consume(); } } } }); //final long delta = Patches.APPLE_BUG_ID_3716865 ? 100 : 0; final long delta = 500; //reproducible on Windows too addWindowFocusListener(new WindowFocusListener() { @Override public void windowGainedFocus(WindowEvent e) { } @Override public void windowLostFocus(WindowEvent e) { long eventTime = System.currentTimeMillis(); if (eventTime - showTime.get() > delta && e.getOppositeWindow() != e.getWindow()) { dispose(); } else { IdeFocusManager.getGlobalInstance().requestFocus(AboutDialog.this, true); } } }); new ClickListener() { @Override public boolean onClick(MouseEvent event, int clickCount) { dispose(); return true; } }.installOn(closeListenerOwner); pack(); setLocationRelativeTo(window); } private static void copyInfoToClipboard(String text) { try { CopyPasteManager.getInstance().setContents(new StringSelection(text)); } catch (Exception ignore) { } } private static class InfoSurface extends JPanel { final Color col; final Color linkCol; private final Icon myImage; private Font myFont; private Font myBoldFont; private final List<AboutBoxLine> myLines = new ArrayList<AboutBoxLine>(); private StringBuilder myInfo = new StringBuilder(); private static class Link { private final Rectangle rectangle; private final String url; private Link(Rectangle rectangle, String url) { this.rectangle = rectangle; this.url = url; } } private Link myActiveLink; private final List<Link> myLinks = new ArrayList<Link>(); public InfoSurface(Icon image) { myImage = image; setOpaque(false); col = Color.white; final ApplicationInfoImpl ideInfo = (ApplicationInfoImpl) ApplicationInfoEx.getInstanceEx(); linkCol = ideInfo.getAboutLinkColor() != null ? ideInfo.getAboutLinkColor() : UI.getColor("link.foreground"); setBackground(col); Calendar cal = ideInfo.getBuildDate(); myLines.add(new AboutBoxLine(ideInfo.getFullApplicationName(), true, null)); appendLast(); String buildInfo = IdeBundle.message("aboutbox.build.number", ideInfo.getBuild().asString()); String buildDate = ""; if (ideInfo.getBuild().isSnapshot()) { buildDate = new SimpleDateFormat("HH:mm, ").format(cal.getTime()); } buildDate += DateFormatUtil.formatAboutDialogDate(cal.getTime()); buildInfo += IdeBundle.message("aboutbox.build.date", buildDate); myLines.add(new AboutBoxLine(buildInfo)); appendLast(); myLines.add(new AboutBoxLine("")); myLines.add(new AboutBoxLine("")); final Properties properties = System.getProperties(); myLines.add(new AboutBoxLine( IdeBundle.message("aboutbox.jdk", properties.getProperty("java.version", "unknown")), true, null)); appendLast(); myLines.add(new AboutBoxLine( IdeBundle.message("aboutbox.vm", properties.getProperty("java.vm.name", "unknown"), properties.getProperty("java.vendor", "unknown")))); appendLast(); myLines.add(new AboutBoxLine("")); myLines.add(new AboutBoxLine("Based on ").keepWithNext()); myLines.add(new AboutBoxLine("IntelliJ Platform", true, "http://jetbrains.org")); myLines.add(new AboutBoxLine("")); myLines.add(new AboutBoxLine("")); myLines.add(new AboutBoxLine("Powered by ").keepWithNext()); myLines.add(new AboutBoxLine("Must-Be.org", true, "http://must-be.org/consulo/")); addMouseListener(new MouseAdapter() { @Override public void mousePressed(MouseEvent event) { if (myActiveLink != null) { event.consume(); BrowserUtil.launchBrowser(myActiveLink.url); } } }); addMouseMotionListener(new MouseMotionAdapter() { @Override public void mouseMoved(MouseEvent event) { boolean hadLink = (myActiveLink != null); myActiveLink = null; for (Link link : myLinks) { if (link.rectangle.contains(event.getPoint())) { myActiveLink = link; if (!hadLink) { setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR)); } break; } } if (hadLink && myActiveLink == null) { setCursor(Cursor.getDefaultCursor()); } } }); } private void appendLast() { myInfo.append(myLines.get(myLines.size() - 1).getText()).append("\n"); } @Override protected void paintChildren(Graphics g) { super.paintChildren(g); Graphics2D g2 = (Graphics2D) g; UIUtil.applyRenderingHints(g); Font labelFont = UIUtil.getLabelFont(); for (int labelSize = 10; labelSize != 6; labelSize -= 1) { myLinks.clear(); g2.setPaint(col); myImage.paintIcon(this, g2, 0, 0); g2.setColor(col); TextRenderer renderer = new TextRenderer(0, 145, 398, 120, g2); UIUtil.setupComposite(g2); myFont = labelFont.deriveFont(Font.PLAIN, labelSize); myBoldFont = labelFont.deriveFont(Font.BOLD, labelSize + 1); try { renderer.render(30, 0, myLines); break; } catch (TextRenderer.OverflowException ignore) { } } ApplicationInfo appInfo = ApplicationInfo.getInstance(); Rectangle aboutLogoRect = appInfo.getAboutLogoRect(); if (aboutLogoRect != null) { myLinks.add(new Link(aboutLogoRect, appInfo.getCompanyURL())); } } public String getText() { return myInfo.toString(); } public class TextRenderer { private final int xBase; private final int yBase; private final int w; private final int h; private final Graphics2D g2; private int x = 0; private int y = 0; private FontMetrics fontmetrics; private int fontAscent; private int fontHeight; private Font font; public class OverflowException extends Exception { } public TextRenderer(final int xBase, final int yBase, final int w, final int h, final Graphics2D g2) { this.xBase = xBase; this.yBase = yBase; this.w = w; this.h = h; this.g2 = g2; if (SystemInfo.isWindows) { g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF); } } public void render(int indentX, int indentY, List<AboutBoxLine> lines) throws OverflowException { x = indentX; y = indentY; ApplicationInfoEx appInfo = (ApplicationInfoEx) ApplicationInfo.getInstance(); for (AboutBoxLine line : lines) { final String s = line.getText(); setFont(line.isBold() ? myBoldFont : myFont); if (line.getUrl() != null) { g2.setColor(linkCol); FontMetrics metrics = g2.getFontMetrics(font); myLinks.add(new Link( new Rectangle(x, yBase + y - fontAscent, metrics.stringWidth(s), fontHeight), line.getUrl())); } else { g2.setColor(appInfo.getAboutForeground()); } renderString(s, indentX); if (!line.isKeepWithNext() && !line.equals(lines.get(lines.size() - 1))) { lineFeed(indentX, s); } } } private void renderString(final String s, final int indentX) throws OverflowException { final List<String> words = StringUtil.split(s, " "); for (String word : words) { int wordWidth = fontmetrics.stringWidth(word); if (x + wordWidth >= w) { lineFeed(indentX, word); } else { char c = ' '; final int cW = fontmetrics.charWidth(c); if (x + cW < w) { g2.drawChars(new char[] { c }, 0, 1, xBase + x, yBase + y); x += cW; } } renderWord(word, indentX); } } private void renderWord(final String s, final int indentX) throws OverflowException { for (int j = 0; j != s.length(); ++j) { final char c = s.charAt(j); final int cW = fontmetrics.charWidth(c); if (x + cW >= w) { lineFeed(indentX, s); } g2.drawChars(new char[] { c }, 0, 1, xBase + x, yBase + y); x += cW; } } private void lineFeed(int indent, final String s) throws OverflowException { x = indent; if (s.length() == 0) { y += fontHeight / 3; } else { y += fontHeight; } if (y >= h) { throw new OverflowException(); } } private void setFont(Font font) { this.font = font; fontmetrics = g2.getFontMetrics(font); g2.setFont(font); fontAscent = fontmetrics.getAscent(); fontHeight = fontmetrics.getHeight(); } } } private static class AboutBoxLine { private final String myText; private final boolean myBold; private final String myUrl; private boolean myKeepWithNext; public AboutBoxLine(final String text, final boolean bold, final String url) { myText = text; myBold = bold; myUrl = url; } public AboutBoxLine(final String text) { myText = text; myBold = false; myUrl = null; } public String getText() { return myText; } public boolean isBold() { return myBold; } public String getUrl() { return myUrl; } public boolean isKeepWithNext() { return myKeepWithNext; } public AboutBoxLine keepWithNext() { myKeepWithNext = true; return this; } } }