Proof of concept for advanced glyph layout (2nd try)

examples/src/main/java/org/apache/pdfbox/examples/pdmodel/AdvancedTextLayout.java

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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.
+ */
+
+package org.apache.pdfbox.examples.pdmodel;
+
+import java.io.IOException;
+
+import org.apache.fontbox.ttf.OTFParser;
+import org.apache.fontbox.ttf.OpenTypeFont;
+import org.apache.fontbox.ttf.advanced.GlyphVectorAdvanced;
+import org.apache.fontbox.ttf.advanced.api.AdvancedOTFParser;
+import org.apache.fontbox.ttf.advanced.api.AdvancedOpenTypeFont;
+import org.apache.fontbox.ttf.advanced.api.GlyphVector;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.font.PDFont;
+import org.apache.pdfbox.pdmodel.font.PDType0Font;
+import org.apache.pdfbox.util.Matrix;
+
+/**
+ * An example of using an embedded OpenType font with advanced glyph layout.
+ *
+ * @author Daniel Fickling
+ */
+public final class AdvancedTextLayout
+{
+    private AdvancedTextLayout()
+    {
+    }
+
+    private static float getAdvance(float startX, GlyphVector vector, float fontSize) {
+        return (((vector.getWidth() / 1000f) * fontSize) + startX);
+    }
+
+    private static Matrix createMatrix(float translateX, float translateY) {
+        return Matrix.getTranslateInstance(translateX, translateY);
+    }
+
+    public static void main(String[] args) throws IOException
+    {
+        try (PDDocument document = new PDDocument())
+        {
+            PDPage page = new PDPage(PDRectangle.A4);
+            document.addPage(page);
+
+            //String dir = "C:\\Users\\daniel\\Desktop\\fonts\\";
+            //String fontFile = "./pdfbox/src/main/resources/org/apache/pdfbox/resources/ttf/LiberationSans-Regular.ttf";
+            //String fontFile = dir + "IndieFlower-Regular.ttf";
+            //String fontFile = dir + "SourceSansPro-Regular.ttf";
+            String dir = "/home/volker/work/";
+            String fontFile = dir + "NotoSans-Regular.ttf";
+
+
+            AdvancedOTFParser fontParser = new AdvancedOTFParser();
+            AdvancedOpenTypeFont otFont = fontParser.parse(fontFile);
+            PDFont font = PDType0Font.load(document, otFont, true);
+
+            GlyphVector vector = null;
+            float x = 10;
+
+            try (PDPageContentStream stream = new PDPageContentStream(document, page))
+            {
+                float fontSize = 20;
+                stream.beginText();
+                stream.setFont(font, fontSize);
+
+                vector = otFont.createGlyphVector("PDFBox's Unicode with Embedded OpenType Font", (int)fontSize);
+                stream.setTextMatrix(createMatrix(x, 200));
+                stream.showGlyphVector(vector);
+                x = getAdvance(10, vector, fontSize);
+
+                vector = otFont.createGlyphVector("|AFTER (SIMPLE)", (int)fontSize);
+                stream.setTextMatrix(createMatrix(x, 200));
+                stream.showGlyphVector(vector);
+                x = 10;
+
+                String complex = "A̋L̦    a̋   N̂N̦B ўў 1/2";
+
+                vector = otFont.createGlyphVector(complex, (int)fontSize);
+                stream.setTextMatrix(createMatrix(x, 100));
+                stream.showGlyphVector(vector);
+                x = getAdvance(10, vector, fontSize);
+
+                vector = otFont.createGlyphVector("|AFTER (COMPLEX)", (int)fontSize);
+                stream.setTextMatrix(createMatrix(x, 100));
+                stream.showGlyphVector(vector);
+
+                stream.setTextMatrix(Matrix.getTranslateInstance(10, 160));
+                stream.showText(complex);
+                stream.setTextMatrix(Matrix.getTranslateInstance(10 + (font.getStringWidth(complex) / 1000f * fontSize), 160));
+                stream.showText("|AFTER (BAD)");
+
+                stream.endText();
+            }
+
+            document.save("advanced-text.pdf");
+        }
+    }
+}