MiniDesktopLayer.java

   1 package org.argeo.swt.desktop;
   2
   3 import java.io.IOException;
   4 import java.nio.file.DirectoryStream;
   5 import java.nio.file.Files;
   6 import java.nio.file.Path;
   7
   8 import org.eclipse.swt.SWT;
   9 import org.eclipse.swt.events.SelectionAdapter;
  10 import org.eclipse.swt.events.SelectionEvent;
  11 import org.eclipse.swt.graphics.Image;
  12 import org.eclipse.swt.graphics.ImageData;
  13 import org.eclipse.swt.layout.GridData;
  14 import org.eclipse.swt.layout.GridLayout;
  15 import org.eclipse.swt.layout.RowData;
  16 import org.eclipse.swt.layout.RowLayout;
  17 import org.eclipse.swt.program.Program;
  18 import org.eclipse.swt.widgets.Button;
  19 import org.eclipse.swt.widgets.Composite;
  20 import org.eclipse.swt.widgets.Display;
  21 import org.eclipse.swt.widgets.Label;
  22
  23 /** Implementation of an active desktop with icons. */
  24 public class MiniDesktopLayer {
  25         public void init(Composite parent, Path context) {
  26                 parent.setLayout(new RowLayout());
  27                 try {
  28                         DirectoryStream<Path> ds = Files.newDirectoryStream(context);
  29                         ds.forEach((path) -> createIcon(parent, path));
  30                 } catch (IOException e) {
  31                         e.printStackTrace();
  32                 }
  33         }
  34
  35         protected void createIcon(Composite parent, Path path) {
  36                 String fileName = path.getFileName().toString();
  37                 String ext = fileName.substring(fileName.lastIndexOf('.') + 1);
  38                 Program program = Program.findProgram(ext);
  39                 if (program == null) {
  40                         createDefaultIcon(parent, path);
  41                         return;
  42                 }
  43
  44                 Display display = parent.getDisplay();
  45                 ImageData iconData = program.getImageData();
  46
  47                 Image iconImage;
  48                 if (iconData == null) {
  49                         iconImage = null;
  50                 } else {
  51                         iconImage = new Image(display, iconData);
  52                 }
  53
  54                 Composite icon = new Composite(parent, SWT.BORDER);
  55                 icon.setLayoutData(new RowData(48, 72));
  56                 icon.setLayout(new GridLayout());
  57                 // Button
  58                 Button iconB = new Button(icon, SWT.FLAT);
  59                 iconB.setImage(iconImage);
  60                 // iconB.setLayoutData(new GridData(iconData.width, iconData.height));
  61                 iconB.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));
  62                 iconB.addSelectionListener(new SelectionAdapter() {
  63
  64                         @Override
  65                         public void widgetSelected(SelectionEvent e) {
  66                                 program.execute(path.toString());
  67                         }
  68
  69                 });
  70                 // Label
  71                 Label iconL = new Label(icon, SWT.WRAP);
  72                 iconL.setText(path.getFileName().toString());
  73                 iconL.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));
  74         }
  75
  76         protected void createDefaultIcon(Composite parent, Path path) {
  77                 Composite icon = new Composite(parent, SWT.NONE);
  78                 icon.setLayout(new GridLayout());
  79                 Label iconL = new Label(icon, SWT.NONE);
  80                 iconL.setText(path.getFileName().toString());
  81                 iconL.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true, true));
  82         }
  83 }