273 lines
9.3 KiB
Java
273 lines
9.3 KiB
Java
/*
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* Copyright (c) 2004, 2018, 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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/* @test
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@bug 4328745 5090704 8166111 8176510 8202767
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@summary exercise getLayoutFlags, getGlyphCharIndex, getGlyphCharIndices
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*/
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import java.awt.Font;
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import static java.awt.Font.*;
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import java.awt.GraphicsEnvironment;
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import java.awt.font.FontRenderContext;
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import java.awt.font.GlyphVector;
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import static java.awt.font.GlyphVector.*;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Point2D;
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public class TestLayoutFlags {
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static public void main(String[] args) {
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new TestLayoutFlags().runTest();
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}
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void runTest() {
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Font font = findFont("abcde");
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if (font == null) {
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return; // this system is no use for this test.
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}
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String latin1 = "This is a latin1 string"; // none
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String hebrew = "\u05d0\u05d1\u05d2\u05d3"; // rtl
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String arabic = "\u0646\u0644\u0622\u0646"; // rtl + mc/g
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String hindi = "\u0939\u093f\u0923\u094d\u0921\u0940"; // ltr + reorder
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String tamil = "\u0b9c\u0bcb"; // ltr + mg/c + split
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FontRenderContext frc = new FontRenderContext(null, true, true);
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// get glyph char indices needs to initializes layoutFlags before
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// use (5090704)
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{
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GlyphVector gv = font.createGlyphVector(frc, "abcde");
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int ix = gv.getGlyphCharIndex(0);
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if (ix != 0) {
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throw new Error("glyph 0 incorrectly mapped to char " + ix);
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}
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int[] ixs = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
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for (int i = 0; i < ixs.length; ++i) {
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if (ixs[i] != i) {
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throw new Error("glyph " + i + " incorrectly mapped to char " + ixs[i]);
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}
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}
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}
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GlyphVector latinGV = makeGlyphVector("latin", latin1, false, frc);
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GlyphVector hebrewGV = makeGlyphVector("hebrew", hebrew, true, frc);
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GlyphVector arabicGV = makeGlyphVector("arabic", arabic, true, frc);
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GlyphVector hindiGV = makeGlyphVector("devanagari", hindi, false, frc);
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GlyphVector tamilGV = makeGlyphVector("tamil", tamil, false, frc);
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GlyphVector latinPos = font.createGlyphVector(frc, latin1);
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Point2D pt = latinPos.getGlyphPosition(0);
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pt.setLocation(pt.getX(), pt.getY() + 1.0);
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latinPos.setGlyphPosition(0, pt);
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GlyphVector latinTrans = font.createGlyphVector(frc, latin1);
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latinTrans.setGlyphTransform(0, AffineTransform.getRotateInstance(.15));
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test("latin", latinGV, true, 0);
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test("hebrew", hebrewGV, true, FLAG_RUN_RTL);
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test("arabic", arabicGV, true, FLAG_COMPLEX_GLYPHS | FLAG_RUN_RTL);
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test("hindi", hindiGV, true, FLAG_COMPLEX_GLYPHS);
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test("tamil", tamilGV, true, FLAG_COMPLEX_GLYPHS);
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test("pos", latinPos, true, 0);
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test("trans", latinTrans, false, 0);
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}
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static boolean isLogicalFont(Font f) {
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String family = f.getFamily().toLowerCase();
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switch (family) {
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case "dialog":
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case "dialoginput":
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case "serif":
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case "sansserif":
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case "monospaced": return true;
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default: return false;
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}
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}
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Font[] allFonts = null;
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Font findFont(String text) {
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if (allFonts == null) {
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allFonts =
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GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
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}
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for (Font f : allFonts) {
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if (isLogicalFont(f)) {
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continue;
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}
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if (f.canDisplayUpTo(text) == -1) {
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return f.deriveFont(Font.PLAIN, 24);
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}
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}
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return null;
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}
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GlyphVector makeGlyphVector(String script, String text,
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boolean rtl, FontRenderContext frc) {
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Font font = findFont(text);
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if (font == null) {
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System.out.println("No font found for script " + script);
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return null;
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} else {
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System.out.println("Using " + font.getFontName() +
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" for script " + script);
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}
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int flags = rtl ? LAYOUT_RIGHT_TO_LEFT : LAYOUT_LEFT_TO_RIGHT;
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return font.layoutGlyphVector(frc, text.toCharArray(),
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0, text.length(), flags);
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}
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void test(String name, GlyphVector gv, boolean layout, int allowedFlags) {
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if (gv == null) {
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return;
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}
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int iv = (layout) ? FLAG_HAS_POSITION_ADJUSTMENTS : 0;
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int computedFlags = computeFlags(gv, iv) & gv.FLAG_MASK;
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int actualFlags = gv.getLayoutFlags() & gv.FLAG_MASK;
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System.out.println("\n*** " + name + " ***");
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System.out.println(" test flags");
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System.out.print("computed ");
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printFlags(computedFlags);
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System.out.print(" actual ");
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printFlags(actualFlags);
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System.out.print("allowed layout ");
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printFlags(allowedFlags);
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if (computedFlags != actualFlags) {
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// Depending on the font, if layout is run for a RTL script
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// you might get that flag set, or COMPLEX_GLYPHS instead.
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boolean error = false;
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int COMPLEX_RTL = FLAG_COMPLEX_GLYPHS | FLAG_RUN_RTL;
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if (allowedFlags == 0) {
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error = (allowedFlags & COMPLEX_RTL) != 0;
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}
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if (allowedFlags == FLAG_RUN_RTL) {
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error = (actualFlags & FLAG_COMPLEX_GLYPHS) != 0;
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}
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if (allowedFlags == FLAG_COMPLEX_GLYPHS) {
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error = (actualFlags & FLAG_RUN_RTL) != 0;
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}
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if (allowedFlags == COMPLEX_RTL) {
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error = (actualFlags & COMPLEX_RTL) == 0;
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}
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if (error) {
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throw new Error("layout flags in test: " + name +
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" expected: " + Integer.toHexString(computedFlags) +
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" but got: " + Integer.toHexString(actualFlags));
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}
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}
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}
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static public void printFlags(int flags) {
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System.out.print("flags:");
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if ((flags & FLAG_HAS_POSITION_ADJUSTMENTS) != 0) {
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System.out.print(" pos");
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}
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if ((flags & FLAG_HAS_TRANSFORMS) != 0) {
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System.out.print(" trans");
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}
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if ((flags & FLAG_RUN_RTL) != 0) {
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System.out.print(" rtl");
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}
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if ((flags & FLAG_COMPLEX_GLYPHS) != 0) {
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System.out.print(" complex");
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}
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if ((flags & FLAG_MASK) == 0) {
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System.out.print(" none");
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}
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System.out.println();
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}
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int computeFlags(GlyphVector gv, int initValue) {
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validateCharIndexMethods(gv);
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int result = initValue;
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if (glyphsAreRTL(gv)) {
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result |= FLAG_RUN_RTL;
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}
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if (hasComplexGlyphs(gv)) {
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result |= FLAG_COMPLEX_GLYPHS;
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}
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if (gv.getFont().isTransformed()) {
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result |= FLAG_HAS_TRANSFORMS;
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}
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return result;
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}
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/**
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* throw an exception if getGlyphCharIndices returns a different result than
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* you get from iterating through getGlyphCharIndex one at a time.
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*/
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void validateCharIndexMethods(GlyphVector gv) {
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int[] indices = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
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for (int i = 0; i < gv.getNumGlyphs(); ++i) {
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if (gv.getGlyphCharIndex(i) != indices[i]) {
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throw new Error("glyph index mismatch at " + i);
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}
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}
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}
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/**
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* Return true if the glyph indices are pure ltr
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*/
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boolean glyphsAreLTR(GlyphVector gv) {
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int[] indices = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
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for (int i = 0; i < indices.length; ++i) {
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if (indices[i] != i) {
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return false;
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}
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}
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return true;
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}
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/**
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* Return true if the glyph indices are pure rtl
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*/
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boolean glyphsAreRTL(GlyphVector gv) {
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int[] indices = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
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for (int i = 0; i < indices.length; ++i) {
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if (indices[i] != indices.length - i - 1) {
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return false;
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}
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}
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return true;
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}
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/**
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* Return true if there is a local reordering (the run is not ltr or rtl).
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* !!! We can't have mixed bidi runs in the glyphs.
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*/
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boolean hasComplexGlyphs(GlyphVector gv) {
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return !glyphsAreLTR(gv) && !glyphsAreRTL(gv);
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}
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}
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