russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
134 lines
4.8 KiB
Java
134 lines
4.8 KiB
Java
/*
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* Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Shape;
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import java.awt.font.FontRenderContext;
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import java.awt.font.TextAttribute;
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import java.awt.font.TextLayout;
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import java.text.AttributedString;
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import javax.swing.JPanel;
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/*
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* @test
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* @bug 4221422
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* @summary Display several TextLayouts with various selections.
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* All the selections should be between non-italic and italic text,
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* and the top and bottom of the selection region should be horizontal.
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual TestSelection
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*/
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public final class TestSelection extends JPanel {
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private static final float MARGIN = 20;
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public static void main(String[] args) throws Exception {
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final String INSTRUCTIONS = """
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Several TextLayouts are displayed along with selections.
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The selection regions should have horizontal top and bottom segments.
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If above condition is true, press Pass else Fail.""";
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PassFailJFrame.builder()
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.title("TestSelection Instruction")
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.instructions(INSTRUCTIONS)
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.columns(40)
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.splitUI(TestSelection::new)
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.build()
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.awaitAndCheck();
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}
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@Override
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public Dimension getPreferredSize() {
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return new Dimension(300, 300);
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}
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private float drawSelectionAndLayout(Graphics2D g2d,
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TextLayout layout,
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float y,
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int selStart,
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int selLimit) {
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Color selectionColor = Color.PINK;
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Color textColor = Color.BLACK;
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y += layout.getAscent();
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g2d.translate(MARGIN, y);
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Shape hl = layout.getLogicalHighlightShape(selStart, selLimit);
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g2d.setColor(selectionColor);
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g2d.fill(hl);
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g2d.setColor(textColor);
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layout.draw(g2d, 0, 0);
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g2d.translate(-MARGIN, -y);
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y += layout.getDescent() + layout.getLeading() + 10;
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return y;
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}
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@Override
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public void paint(Graphics g) {
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String text = "Hello world";
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Graphics2D g2d = (Graphics2D) g;
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g2d.setColor(Color.WHITE);
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g2d.fillRect(0, 0, getWidth(), getHeight());
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AttributedString attrStr = new AttributedString(text);
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FontRenderContext frc = g2d.getFontRenderContext();
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final int midPoint = text.indexOf('w');
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final int selStart = midPoint / 2;
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final int selLimit = text.length() - selStart;
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final Font italic = new Font(Font.SANS_SERIF, Font.ITALIC, 24);
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float y = MARGIN;
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attrStr.addAttribute(TextAttribute.FONT, italic, 0, midPoint);
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TextLayout layout = new TextLayout(attrStr.getIterator(), frc);
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y = drawSelectionAndLayout(g2d, layout, y, selStart - 1, selLimit);
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y = drawSelectionAndLayout(g2d, layout, y, selStart, selLimit);
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y = drawSelectionAndLayout(g2d, layout, y, selStart + 1, selLimit);
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attrStr = new AttributedString(text);
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attrStr.addAttribute(TextAttribute.FONT,
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italic, midPoint, text.length());
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layout = new TextLayout(attrStr.getIterator(), frc);
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y = drawSelectionAndLayout(g2d, layout, y, selStart, selLimit);
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attrStr = new AttributedString(text);
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attrStr.addAttribute(TextAttribute.FONT, italic, 0, midPoint);
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attrStr.addAttribute(TextAttribute.SIZE, 48f, midPoint, text.length());
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layout = new TextLayout(attrStr.getIterator(), frc);
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y = drawSelectionAndLayout(g2d, layout, y, selStart, selLimit);
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}
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}
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