Home | History | Annotate | Download | only in ddms 
      1 /* //device/tools/ddms/src/com/android/ddms/AboutDialog.java
      2 **
      3 ** Copyright 2007, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 package com.android.ddms;
     19 
     20 import com.android.ddmlib.Log;
     21 import com.android.ddmuilib.ImageLoader;
     22 
     23 import org.eclipse.swt.SWT;
     24 import org.eclipse.swt.events.SelectionAdapter;
     25 import org.eclipse.swt.events.SelectionEvent;
     26 import org.eclipse.swt.graphics.Image;
     27 import org.eclipse.swt.layout.GridData;
     28 import org.eclipse.swt.layout.GridLayout;
     29 import org.eclipse.swt.widgets.Button;
     30 import org.eclipse.swt.widgets.Composite;
     31 import org.eclipse.swt.widgets.Dialog;
     32 import org.eclipse.swt.widgets.Display;
     33 import org.eclipse.swt.widgets.Label;
     34 import org.eclipse.swt.widgets.Shell;
     35 
     36 import java.io.InputStream;
     37 
     38 /**
     39  * Our "about" box.
     40  */
     41 public class AboutDialog extends Dialog {
     42 
     43     private Image logoImage;
     44 
     45     /**
     46      * Create with default style.
     47      */
     48     public AboutDialog(Shell parent) {
     49         this(parent, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
     50     }
     51 
     52     /**
     53      * Create with app-defined style.
     54      */
     55     public AboutDialog(Shell parent, int style) {
     56         super(parent, style);
     57     }
     58 
     59     /**
     60      * Prepare and display the dialog.
     61      */
     62     public void open() {
     63         Shell parent = getParent();
     64         Shell shell = new Shell(parent, getStyle());
     65         shell.setText("About...");
     66 
     67         logoImage = loadImage(shell, "ddms-logo.png"); // $NON-NLS-1$
     68         createContents(shell);
     69         shell.pack();
     70 
     71         shell.open();
     72         Display display = parent.getDisplay();
     73         while (!shell.isDisposed()) {
     74             if (!display.readAndDispatch())
     75                 display.sleep();
     76         }
     77 
     78         logoImage.dispose();
     79     }
     80 
     81     /*
     82      * Load an image file from a resource.
     83      *
     84      * This depends on Display, so I'm not sure what the rules are for
     85      * loading once and caching in a static class field.
     86      */
     87     private Image loadImage(Shell shell, String fileName) {
     88         InputStream imageStream;
     89         String pathName = "/images/" + fileName;  // $NON-NLS-1$
     90 
     91         imageStream = this.getClass().getResourceAsStream(pathName);
     92         if (imageStream == null) {
     93             //throw new NullPointerException("couldn't find " + pathName);
     94             Log.w("ddms", "Couldn't load " + pathName);
     95             Display display = shell.getDisplay();
     96             return ImageLoader.createPlaceHolderArt(display, 100, 50,
     97                     display.getSystemColor(SWT.COLOR_BLUE));
     98         }
     99 
    100         Image img = new Image(shell.getDisplay(), imageStream);
    101         if (img == null)
    102             throw new NullPointerException("couldn't load " + pathName);
    103         return img;
    104     }
    105 
    106     /*
    107      * Create the about box contents.
    108      */
    109     private void createContents(final Shell shell) {
    110         GridLayout layout;
    111         GridData data;
    112         Label label;
    113 
    114         shell.setLayout(new GridLayout(2, false));
    115 
    116         // Fancy logo
    117         Label logo = new Label(shell, SWT.BORDER);
    118         logo.setImage(logoImage);
    119 
    120         // Text Area
    121         Composite textArea = new Composite(shell, SWT.NONE);
    122         layout = new GridLayout(1, true);
    123         textArea.setLayout(layout);
    124 
    125         // Text lines
    126         label = new Label(textArea, SWT.NONE);
    127         if (Main.sRevision != null && Main.sRevision.length() > 0) {
    128             label.setText("Dalvik Debug Monitor Revision " + Main.sRevision);
    129         } else {
    130             label.setText("Dalvik Debug Monitor");
    131         }
    132         label = new Label(textArea, SWT.NONE);
    133         label.setText("Copyright 2007, The Android Open Source Project");
    134         label = new Label(textArea, SWT.NONE);
    135         label.setText("All Rights Reserved.");
    136 
    137         // blank spot in grid
    138         label = new Label(shell, SWT.NONE);
    139 
    140         // "OK" button
    141         Button ok = new Button(shell, SWT.PUSH);
    142         ok.setText("OK");
    143         data = new GridData(GridData.HORIZONTAL_ALIGN_END);
    144         data.widthHint = 80;
    145         ok.setLayoutData(data);
    146         ok.addSelectionListener(new SelectionAdapter() {
    147             @Override
    148             public void widgetSelected(SelectionEvent e) {
    149                 shell.close();
    150             }
    151         });
    152 
    153         shell.pack();
    154 
    155         shell.setDefaultButton(ok);
    156     }
    157 }
    158