| /******************************************************************************* |
| * Copyright (c) 2018 Red Hat and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Red Hat - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.tests.gtk.snippets; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.graphics.TextLayout; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Canvas; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Text; |
| |
| public class Bug442831_TextLayoutRTL { |
| |
| protected Shell shell; |
| Button btnRightToLeft; |
| Text text; |
| Canvas canvas; |
| |
| /** |
| * Launch the application. |
| * |
| * @param args |
| */ |
| public static void main(String[] args) { |
| try { |
| Bug442831_TextLayoutRTL window = new Bug442831_TextLayoutRTL(); |
| window.open(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Open the window. |
| */ |
| public void open() { |
| Display display = Display.getDefault(); |
| createContents(); |
| shell.open(); |
| shell.layout(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) { |
| display.sleep(); |
| } |
| } |
| } |
| |
| /** |
| * Create contents of the window. |
| */ |
| protected void createContents() { |
| shell = new Shell(); |
| shell.setSize(801, 481); |
| shell.setText("SWT Application"); |
| |
| btnRightToLeft = new Button(shell, SWT.CHECK); |
| btnRightToLeft.addSelectionListener(new SelectionAdapter() { |
| @Override |
| public void widgetSelected(SelectionEvent e) { |
| update(); |
| } |
| }); |
| btnRightToLeft.setBounds(643, 30, 134, 25); |
| btnRightToLeft.setData("name", "btnRightToLeft"); |
| btnRightToLeft.setText("RTL"); |
| |
| text = new Text(shell, SWT.BORDER | SWT.WRAP | SWT.MULTI); |
| text.addModifyListener(e -> update()); |
| text.setBounds(22, 30, 593, 125); |
| text.setData("name", "text"); |
| |
| canvas = new Canvas(shell, SWT.NONE); |
| canvas.setBounds(22, 177, 593, 224); |
| canvas.setData("name", "canvas"); |
| |
| canvas.addPaintListener(e -> drawCanvas(e.gc)); |
| |
| text.setText("Lorem ipsum dolor sit amet, consectetur adipiscing elit." |
| + "Praesent quis dapibus nibh." |
| + "Integer dolor sem, sagittis quis pharetra in, lacinia laoreet augue." |
| + "Ut porttitor rhoncus gravida." + "Mauris nec orci vel mi posuere rutrum." |
| + "Nam aliquam interdum condimentum." |
| + "Aenean a sollicitudin mi, sit amet pharetra nisl." |
| + "Nulla imperdiet quam non metus blandit porta id ut sem." |
| + "Nunc bibendum et ex id ullamcorper." |
| + "Morbi tincidunt lacus id eros volutpat pretium." |
| + "Cras at sapien non justo porttitor dignissim." + "Vivamus sed risus libero." |
| + "Sed et nisi sit amet nibh malesuada cursus sit amet vitae ligula." |
| + "Vestibulum varius quam at mauris pharetra maximus eget non diam." |
| + "Nunc volutpat consequat dolor ut interdum." |
| + "Suspendisse sed tristique ipsum, nec dictum eros."); |
| |
| } |
| |
| protected void drawCanvas(GC gc) { |
| Display display = shell.getDisplay(); |
| TextLayout layout = new TextLayout(display); |
| layout.setAlignment(SWT.LEFT); |
| layout.setOrientation(btnRightToLeft.getSelection() ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT); |
| layout.setWidth(canvas.getBounds().width); |
| layout.setText(text.getText()); |
| |
| layout.draw(gc, 0, 0); |
| |
| gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE)); |
| Rectangle bounds = layout.getBounds(); |
| gc.drawRectangle(bounds); |
| |
| gc.setForeground(display.getSystemColor(SWT.COLOR_RED)); |
| gc.setLineDash(new int[] { 1, 7 }); |
| int lines = layout.getLineCount(); |
| for (int i = 0; i < lines; i++) { |
| bounds = layout.getLineBounds(i); |
| gc.drawRectangle(bounds); |
| } |
| |
| } |
| |
| protected void update() { |
| canvas.redraw(); |
| } |
| } |