| /******************************************************************************* |
| * Copyright (c) 2006 Tom Schindl and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Tom Schindl - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jface.snippets.viewers; |
| |
| import org.eclipse.jface.viewers.ColumnLabelProvider; |
| import org.eclipse.jface.viewers.IStructuredContentProvider; |
| import org.eclipse.jface.viewers.OwnerDrawLabelProvider; |
| import org.eclipse.jface.viewers.TableViewer; |
| import org.eclipse.jface.viewers.TableViewerColumn; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.TableItem; |
| |
| /** |
| * Example showing how to center an image using an owner draw label provider |
| * |
| * @author Tom Schindl <tom.schindl@bestsolution.at> |
| * |
| */ |
| public class Snippet051TableCenteredImage { |
| private static Image[] images; |
| |
| private class MyContentProvider implements IStructuredContentProvider { |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(Object inputElement) { |
| return (MyModel[]) inputElement; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#dispose() |
| */ |
| public void dispose() { |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, |
| * java.lang.Object, java.lang.Object) |
| */ |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| |
| } |
| |
| } |
| |
| private abstract class CenterImageLabelProvider extends |
| OwnerDrawLabelProvider { |
| |
| protected void measure(Event event, Object element) { |
| } |
| |
| protected void paint(Event event, Object element) { |
| |
| Image img = getImage(element); |
| |
| if (img != null) { |
| Rectangle bounds = ((TableItem) event.item) |
| .getBounds(event.index); |
| Rectangle imgBounds = img.getBounds(); |
| bounds.width /= 2; |
| bounds.width -= imgBounds.width / 2; |
| bounds.height /= 2; |
| bounds.height -= imgBounds.height / 2; |
| |
| int x = bounds.width > 0 ? bounds.x + bounds.width : bounds.x; |
| int y = bounds.height > 0 ? bounds.y + bounds.height : bounds.y; |
| |
| event.gc.drawImage(img, x, y); |
| } |
| } |
| |
| protected abstract Image getImage(Object element); |
| } |
| |
| public class MyModel { |
| public int counter; |
| |
| public MyModel(int counter) { |
| this.counter = counter; |
| } |
| |
| public String toString() { |
| return "Item " + this.counter; |
| } |
| } |
| |
| private static Image createImage(Display display, int red, int green, |
| int blue) { |
| Color color = new Color(display, red, green, blue); |
| Image image = new Image(display, 10, 10); |
| GC gc = new GC(image); |
| gc.setBackground(color); |
| gc.fillRectangle(0, 0, 10, 10); |
| gc.dispose(); |
| |
| return image; |
| } |
| |
| public Snippet051TableCenteredImage(Shell shell) { |
| final TableViewer v = new TableViewer(shell, SWT.BORDER |
| | SWT.FULL_SELECTION); |
| v.setContentProvider(new MyContentProvider()); |
| |
| TableViewerColumn column = new TableViewerColumn(v, SWT.NONE); |
| column.getColumn().setWidth(200); |
| column.getColumn().setText("Column 1"); |
| column.setLabelProvider(new ColumnLabelProvider() { |
| |
| public String getText(Object element) { |
| return "Column 1 => " + element.toString(); |
| } |
| }); |
| |
| column = new TableViewerColumn(v, SWT.NONE); |
| column.getColumn().setWidth(200); |
| column.getColumn().setText("Column 2"); |
| column.setLabelProvider(new CenterImageLabelProvider() { |
| |
| protected Image getImage(Object element) { |
| return images[((MyModel) element).counter % 4]; |
| } |
| |
| }); |
| |
| // OwnerDrawLabelProvider.setUpOwnerDraw(v); |
| |
| MyModel[] model = createModel(); |
| v.setInput(model); |
| v.getTable().setLinesVisible(true); |
| v.getTable().setHeaderVisible(true); |
| } |
| |
| private MyModel[] createModel() { |
| MyModel[] elements = new MyModel[10]; |
| |
| for (int i = 0; i < 10; i++) { |
| elements[i] = new MyModel(i); |
| } |
| |
| return elements; |
| } |
| |
| /** |
| * @param args |
| */ |
| public static void main(String[] args) { |
| Display display = new Display(); |
| |
| images = new Image[4]; |
| images[0] = createImage(display, 0, 0, 255); |
| images[1] = createImage(display, 0, 255, 255); |
| images[2] = createImage(display, 0, 255, 0); |
| images[3] = createImage(display, 255, 0, 255); |
| |
| Shell shell = new Shell(display); |
| shell.setLayout(new FillLayout()); |
| new Snippet051TableCenteredImage(shell); |
| shell.open(); |
| |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| |
| for (int i = 0; i < images.length; i++) { |
| images[i].dispose(); |
| } |
| |
| display.dispose(); |
| |
| } |
| |
| } |