Fonts are now embedded in diagram, wiki, etc PDF exports.

[simantics/platform.git] / bundles / org.simantics.export.core / src / org / simantics / export / core / pdf / FontMapping.java

diff --git a/bundles/org.simantics.export.core/src/org/simantics/export/core/pdf/FontMapping.java b/bundles/org.simantics.export.core/src/org/simantics/export/core/pdf/FontMapping.java
new file mode 100644 (file)
index 0000000..9c68b16
--- /dev/null
+++ b/bundles/org.simantics.export.core/src/org/simantics/export/core/pdf/FontMapping.java
@@ -0,0 +1,121 @@
+/*******************************************************************************
+ * Copyright (c) 2017 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Semantum Oy - initial API and implementation
+ *******************************************************************************/
+package org.simantics.export.core.pdf;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import com.lowagie.text.FontFactory;
+import com.lowagie.text.pdf.DefaultFontMapper;
+import com.lowagie.text.pdf.FontMapper;
+
+/**
+ * A utility class for constructing properly initialize iText {@link FontMapper}
+ * instances.
+ * 
+ * @author Tuukka Lehtonen
+ * @since 1.28.0
+ */
+public class FontMapping {
+
+       private static final AtomicBoolean fontFactoryInitialized = new AtomicBoolean();
+
+       public static FontMapper defaultFontMapper() {
+               // NOTE: recreation is intentional because users might add fonts between exports.
+               // At some point, perhaps we could listen to file system changes in these locations
+               // and only then recreate the mapper.
+               return createDefaultFontMapper(); 
+       }
+
+       public static FontMapper createDefaultFontMapper() {
+               initializeFontFactory();
+               DefaultFontMapper mapper = new DefaultFontMapper();
+               insertDirectories(mapper);
+               return mapper;
+       }
+
+       private static void insertDirectories(DefaultFontMapper mapper) {
+               switch (OSType.calculate()) {
+               case APPLE:
+                       mapper.insertDirectory("/Library/Fonts");
+                       mapper.insertDirectory("/System/Library/Fonts");
+
+               case LINUX:
+               case SUN:
+                       mapper.insertDirectory("/usr/share/X11/fonts");
+                       mapper.insertDirectory("/usr/X/lib/X11/fonts");
+                       mapper.insertDirectory("/usr/openwin/lib/X11/fonts");
+                       mapper.insertDirectory("/usr/share/fonts");
+                       mapper.insertDirectory("/usr/X11R6/lib/X11/fonts");
+                       break;
+
+               case WINDOWS:
+                       String windir = System.getenv("WINDIR");
+                       if (windir != null && !windir.isEmpty()) {
+                               mapper.insertDirectory(windir + "\\Fonts");
+                       }
+                       break;
+
+               default:
+                       break;
+               }
+       }
+
+       private static void initializeFontFactory() {
+               if (!fontFactoryInitialized.compareAndSet(false, true))
+                       return;
+
+               switch (OSType.calculate()) {
+               case APPLE:
+                       FontFactory.registerDirectory("/Library/Fonts");
+                       FontFactory.registerDirectory("/System/Library/Fonts");
+
+               case LINUX:
+               case SUN:
+                       FontFactory.registerDirectory("/usr/share/X11/fonts", true);
+                       FontFactory.registerDirectory("/usr/X/lib/X11/fonts", true);
+                       FontFactory.registerDirectory("/usr/openwin/lib/X11/fonts", true);
+                       FontFactory.registerDirectory("/usr/share/fonts", true);
+                       FontFactory.registerDirectory("/usr/X11R6/lib/X11/fonts", true);
+                       break;
+
+               case WINDOWS:
+                       String windir = System.getenv("WINDIR");
+                       if (windir != null && !windir.isEmpty()) {
+                               FontFactory.registerDirectory(windir + "\\Fonts");
+                       }
+                       break;
+
+               default:
+                       break;
+               }
+       }
+
+       static enum OSType {
+               APPLE, LINUX, SUN, WINDOWS, UNKNOWN;
+
+               public static OSType calculate() {
+                       String osName = System.getProperty("os.name");
+                       assert osName != null;
+                       osName = osName.toLowerCase();
+                       if (osName.startsWith("mac os x"))
+                               return APPLE;
+                       if (osName.startsWith("windows"))
+                               return WINDOWS;
+                       if (osName.startsWith("linux"))
+                               return LINUX;
+                       if (osName.startsWith("sun"))
+                               return SUN;
+                       return UNKNOWN;
+               }
+       }
+
+}