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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.svg.font;
-
- import java.util.Collections;
-
- import org.junit.Test;
-
- import static org.junit.Assert.assertEquals;
-
- import org.apache.fop.fonts.FontInfo;
-
- /**
- * Specifically tests glyph positioning from a real font.
- */
- public class GlyphLayoutTestCase extends FOPGVTGlyphVectorTest {
-
- /**
- * Glyph positioning using the legacy kern table.
- */
- @Test
- public void testBasicGlyphPositioning() throws Exception {
- testGlyphLayout(false);
- }
-
- /**
- * Glyph positioning using GPOS sub-tables.
- */
- @Test
- public void testAdvancedGlyphPositioning() throws Exception {
- testGlyphLayout(true);
- }
-
- private void testGlyphLayout(boolean useAdvanced) {
- FOPGVTFont font = loadFont(useAdvanced);
- glyphVector = (FOPGVTGlyphVector) font.createGlyphVector(null, "L\u201DP,V.F,A\u2019LT.", "DFLT", "dflt");
- glyphVector.performDefaultLayout();
- // Values in font units (unitsPerEm = 2048), glyph width - kern
- int[] widths = {
- /* L */ 1360 - 491,
- /* " */ 1047,
- /* P */ 1378 - 415,
- /* , */ 651,
- /* V */ 1479 - 358,
- /* . */ 651,
- /* F */ 1421 - 319,
- /* , */ 651,
- /* A */ 1479 - 301,
- /* ' */ 651,
- /* L */ 1360 - 167,
- /* T */ 1366 - 301,
- /* . */ 651};
- checkGlyphPositions(13, widths);
- }
-
- private FOPGVTFont loadFont(boolean useAdvanced) {
- FontInfo fontInfo = new FontInfoBuilder().useDejaVuLGCSerif(useAdvanced).build();
- FOPFontFamilyResolver resolver = new FOPFontFamilyResolverImpl(fontInfo);
- FOPGVTFontFamily family = resolver.resolve(FontInfoBuilder.DEJAVU_LGC_SERIF);
- return family.deriveFont(1000, Collections.emptyMap());
- }
-
- private void checkGlyphPositions(int expectedGlyphCount, int[] widths) {
- assertEquals(expectedGlyphCount, glyphVector.getNumGlyphs());
- float[] positions = new float[2 * (widths.length + 1)];
- for (int i = 0, n = 2; i < widths.length; i++, n += 2) {
- positions[n] = positions[n - 2] + widths[i] / 2.048f;
- }
- for (int i = 0; i <= widths.length; i++) {
- assertEquals(positions[2 * i], glyphVector.getGlyphPosition(i).getX(), 3);
- }
- }
-
- }
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