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/*
* Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.font.FontRenderContext;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.text.AttributedString;
import javax.swing.JPanel;
/*
* @test
* @bug 4221422
* @summary Display several TextLayouts with various selections.
* All the selections should be between non-italic and italic text,
* and the top and bottom of the selection region should be horizontal.
* @library /java/awt/regtesthelpers
* @build PassFailJFrame
* @run main/manual TestSelection
*/
public final class TestSelection extends JPanel {
private static final float MARGIN = 20;
public static void main(String[] args) throws Exception {
final String INSTRUCTIONS = """
Several TextLayouts are displayed along with selections.
The selection regions should have horizontal top and bottom segments.
If above condition is true, press Pass else Fail.""";
PassFailJFrame.builder()
.title("TestSelection Instruction")
.instructions(INSTRUCTIONS)
.columns(40)
.splitUI(TestSelection::new)
.build()
.awaitAndCheck();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(300, 300);
}
private float drawSelectionAndLayout(Graphics2D g2d,
TextLayout layout,
float y,
int selStart,
int selLimit) {
Color selectionColor = Color.PINK;
Color textColor = Color.BLACK;
y += layout.getAscent();
g2d.translate(MARGIN, y);
Shape hl = layout.getLogicalHighlightShape(selStart, selLimit);
g2d.setColor(selectionColor);
g2d.fill(hl);
g2d.setColor(textColor);
layout.draw(g2d, 0, 0);
g2d.translate(-MARGIN, -y);
y += layout.getDescent() + layout.getLeading() + 10;
return y;
}
@Override
public void paint(Graphics g) {
String text = "Hello world";
Graphics2D g2d = (Graphics2D) g;
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, getWidth(), getHeight());
AttributedString attrStr = new AttributedString(text);
FontRenderContext frc = g2d.getFontRenderContext();
final int midPoint = text.indexOf('w');
final int selStart = midPoint / 2;
final int selLimit = text.length() - selStart;
final Font italic = new Font(Font.SANS_SERIF, Font.ITALIC, 24);
float y = MARGIN;
attrStr.addAttribute(TextAttribute.FONT, italic, 0, midPoint);
TextLayout layout = new TextLayout(attrStr.getIterator(), frc);
y = drawSelectionAndLayout(g2d, layout, y, selStart - 1, selLimit);
y = drawSelectionAndLayout(g2d, layout, y, selStart, selLimit);
y = drawSelectionAndLayout(g2d, layout, y, selStart + 1, selLimit);
attrStr = new AttributedString(text);
attrStr.addAttribute(TextAttribute.FONT,
italic, midPoint, text.length());
layout = new TextLayout(attrStr.getIterator(), frc);
y = drawSelectionAndLayout(g2d, layout, y, selStart, selLimit);
attrStr = new AttributedString(text);
attrStr.addAttribute(TextAttribute.FONT, italic, 0, midPoint);
attrStr.addAttribute(TextAttribute.SIZE, 48f, midPoint, text.length());
layout = new TextLayout(attrStr.getIterator(), frc);
y = drawSelectionAndLayout(g2d, layout, y, selStart, selLimit);
}
}
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