complexgridlayoutexample.java

一款少见的用swt写的彩票软件

package com.dc.test;

import org.eclipse.swt.*;

import org.eclipse.swt.widgets.*;

import org.eclipse.swt.layout.*;

import org.eclipse.swt.events.*;

import org.eclipse.swt.graphics.*;

public class ComplexGridLayoutExample {

	static Display display;

	static Shell shell;

	static Text dogName;

	static Combo dogBreed;

	static Canvas dogPhoto;

	static Image dogImage;

	static List categories;

	static Text ownerName;

	static Text ownerPhone;

	public static void main(String[] args) {

		display = new Display();

		shell = new Shell(display);

		shell.setText("Dog Show Entry");

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 3;

		shell.setLayout(gridLayout);

		new Label(shell, SWT.NONE).setText("Dog's Name:");

		dogName = new Text(shell, SWT.SINGLE | SWT.BORDER);

		GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);

		gridData.horizontalSpan = 2;

		dogName.setLayoutData(gridData);

		new Label(shell, SWT.NONE).setText("Breed:");

		dogBreed = new Combo(shell, SWT.NONE);

		dogBreed.setItems(new String[] { "Collie", "Pitbull", "Poodle",
		"Scottie" });

		dogBreed.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));

		Label label = new Label(shell, SWT.NONE);

		label.setText("Categories");

		label.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_CENTER));

		new Label(shell, SWT.NONE).setText("Photo:");

		dogPhoto = new Canvas(shell, SWT.BORDER);
		dogPhoto.setLayoutDeferred(true);

		gridData = new GridData(GridData.FILL_BOTH);

		gridData.widthHint = 80;

		gridData.heightHint = 80;

		gridData.verticalSpan = 3;

		dogPhoto.setLayoutData(gridData);

		dogPhoto.addPaintListener(new PaintListener() {

			public void paintControl(final PaintEvent event) {

				if (dogImage != null) {

					event.gc.drawImage(dogImage, 0, 0);

				}

			}

		});

		categories = new List(shell, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL);

		categories.setItems(new String[] {

				"Best of Breed", "Prettiest Female", "Handsomest Male",

				"Best Dressed", "Fluffiest Ears", "Most Colors",

				"Best Performer", "Loudest Bark", "Best Behaved",

				"Prettiest Eyes", "Most Hair", "Longest Tail",

		"Cutest Trick" });

		gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL
				| GridData.VERTICAL_ALIGN_FILL);

		gridData.verticalSpan = 4;

		int listHeight = categories.getItemHeight() * 12;

		Rectangle trim = categories.computeTrim(0, 0, 0, listHeight);

		gridData.heightHint = trim.height;

		categories.setLayoutData(gridData);

		Button browse = new Button(shell, SWT.PUSH);

		browse.setText("Browse...");

		gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);

		gridData.horizontalIndent = 5;

		browse.setLayoutData(gridData);

		browse.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent event) {

				String fileName = new FileDialog(shell).open();

				if (fileName != null) {

					dogImage = new Image(display, fileName);

				}

			}

		});

		Button delete = new Button(shell, SWT.PUSH);

		delete.setText("Delete");

		gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL
				| GridData.VERTICAL_ALIGN_BEGINNING);

		gridData.horizontalIndent = 5;

		delete.setLayoutData(gridData);

		delete.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent event) {

				if (dogImage != null) {

					dogImage.dispose();

					dogImage = null;

					dogPhoto.redraw();

				}

			}

		});

		Group ownerInfo = new Group(shell, SWT.NONE);

		ownerInfo.setText("Owner Info");

		gridLayout = new GridLayout();

		gridLayout.numColumns = 2;

		ownerInfo.setLayout(gridLayout);

		gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);

		gridData.horizontalSpan = 2;

		ownerInfo.setLayoutData(gridData);

		new Label(ownerInfo, SWT.NONE).setText("Name:");

		ownerName = new Text(ownerInfo, SWT.SINGLE | SWT.BORDER);

		ownerName.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

		new Label(ownerInfo, SWT.NONE).setText("Phone:");

		ownerPhone = new Text(ownerInfo, SWT.SINGLE | SWT.BORDER);

		ownerPhone.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

		Button enter = new Button(shell, SWT.PUSH);

		enter.setText("Enter");

		gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);

		gridData.horizontalSpan = 3;

		enter.setLayoutData(gridData);

		enter.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent event) {

				System.out.println("\nDog Name: " + dogName.getText());

				System.out.println("Dog Breed: " + dogBreed.getText());

				System.out.println("Owner Name: " + ownerName.getText());

				System.out.println("Owner Phone: " + ownerPhone.getText());

				System.out.println("Categories:");

				String cats[] = categories.getSelection();

				for (int i = 0; i < cats.length; i++) {

					System.out.println("\t" + cats[i]);

				}

			}

		});

		shell.pack();

		shell.open();

		while (!shell.isDisposed()) {

			if (!display.readAndDispatch())
				display.sleep();

		}

		if (dogImage != null) {

			dogImage.dispose();

		}

	}

}