Changeset 8015 in josm for trunk/src/org/openstreetmap/josm/tools

Timestamp:

2015-02-06T19:17:14+01:00 (10 years ago)

Author:

bastiK

Message:

fixed #10989 - I18n display support for major Asian scripts (Tamil, Bengali, ...)

adds more scripts for Windows, including Tibet, Khmer, Lao, Mongolian, Myanmar
Only works if corresponding font is installed, so basically starting
with a certain Windows version. See source code for details.

Advanced pref font.extended-unicode.added-items renamed to
font.extended-unicode.extra-items, type is now list-of-maps.

Location:

trunk/src/org/openstreetmap/josm/tools

Files:

• PlatformHook.java (modified) (1 diff)
• PlatformHookUnixoid.java (modified) (5 diffs)
• PlatformHookWindows.java (modified) (4 diffs)

trunk/src/org/openstreetmap/josm/tools/PlatformHook.java

@@ -24 +24 @@
       */
     public void preStartupHook();
+    
+    /**
+      * The afterPrefStartupHook will be called early, but after
+      * the preferences have been loaded and basic processing of
+      * command line arguments is finished. 
+      * It is guaranteed to be called before the GUI setup has started.
+      */
+    public void afterPrefStartupHook();
 
     /**

trunk/src/org/openstreetmap/josm/tools/PlatformHookUnixoid.java

@@ -9 +9 @@
 import java.awt.event.KeyEvent;
 import java.io.BufferedReader;
+import java.io.BufferedWriter;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -22 +28 @@
 import java.security.NoSuchAlgorithmException;
 import java.security.cert.CertificateException;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.Properties;
 
 import javax.swing.JOptionPane;
@@ -29 +39 @@
 import org.openstreetmap.josm.gui.ExtendedDialog;
 import org.openstreetmap.josm.gui.util.GuiHelper;
+import org.openstreetmap.josm.data.Preferences.pref;
+import org.openstreetmap.josm.data.Preferences.writeExplicitly;
 
 /**
@@ -38 +50 @@
 public class PlatformHookUnixoid implements PlatformHook {
 
+    /**
+     * Simple data class to hold information about a font.
+     *
+     * Used for fontconfig.properties files.
+     */
+    public static class FontEntry {
+        /**
+         * The character subset. Basically a free identifier, but should
+         * be unique.
+         */
+        @pref
+        public String charset;
+        /**
+         * Platform font name.
+         */
+        @pref @writeExplicitly
+        public String name = "";
+        /**
+         * File name.
+         */
+        @pref @writeExplicitly
+        public String file = "";
+
+        public FontEntry() {
+        }
+
+        public FontEntry(String charset, String name, String file) {
+            this.charset = charset;
+            this.name = name;
+            this.file = file;
+        }
+    }
+
     private String osDescription;
 
     @Override
     public void preStartupHook() {
+    }
+
+    @Override
+    public void afterPrefStartupHook() {
     }
 
@@ -386 +435 @@
         return Main.pref.getPreferencesDirectory();
     }
+
+    /**
+     * Add more fallback fonts to the Java runtime, in order to get
+     * support for more scripts.
+     *
+     * The font configuration in Java doesn't include some Indic scripts,
+     * even though MS Windows ships with fonts that cover these unicode
+     * ranges.
+     *
+     * To fix this, the fontconfig.properties template is copied to the JOSM
+     * cache folder. Then, the additional entries are added to the font
+     * configuration. Finally the system property "sun.awt.fontconfig" is set
+     * to the customized fontconfig.properties file.
+     * 
+     * This is a crude hack, but better than no font display at all for these
+     * languages.
+     * There is no guarantee, that the template file
+     * ($JAVA_HOME/lib/fontconfig.properties.src) matches the default
+     * configuration (which is in a binary format).
+     * Furthermore, the system property "sun.awt.fontconfig" is undocumented and
+     * may no longer work in future versions of Java.
+     *
+     * @param templateFileName file name of the fontconfig.properties template file
+     */
+    protected void extendFontconfig(String templateFileName) {
+        String customFontconfigFile = Main.pref.get("fontconfig.properties", null);
+        if (customFontconfigFile != null) {
+            Utils.updateSystemProperty("sun.awt.fontconfig", customFontconfigFile);
+            return;
+        }
+        if (!Main.pref.getBoolean("font.extended-unicode", true))
+            return;
+
+        String javaLibPath = System.getProperty("java.home") + File.separator + "lib";
+        Path templateFile = FileSystems.getDefault().getPath(javaLibPath, templateFileName);
+        if (!Files.isReadable(templateFile)) {
+            Main.warn("extended font config - unable to find font config template file "+templateFile.toString());
+            return;
+        }
+        try {
+            Properties props = new Properties();
+            props.load(new FileInputStream(templateFile.toFile()));
+            byte[] content = Files.readAllBytes(templateFile);
+            File cachePath = Main.pref.getCacheDirectory();
+            Path fontconfigFile = cachePath.toPath().resolve("fontconfig.properties");
+            OutputStream os = Files.newOutputStream(fontconfigFile);
+            os.write(content);
+            try (Writer w = new BufferedWriter(new OutputStreamWriter(os))) {
+                Collection<FontEntry> extrasPref = Main.pref.getListOfStructs(
+                        "font.extended-unicode.extra-items", getAdditionalFonts(), FontEntry.class);
+                Collection<FontEntry> extras = new ArrayList<>();
+                w.append("\n\n# Added by JOSM to extend unicode coverage of Java font support:\n\n");
+                List<String> allCharSubsets = new ArrayList<>();
+                for (FontEntry entry: extrasPref) {
+                    Collection<String> fontsAvail = getInstalledFonts();
+                    if (fontsAvail != null && fontsAvail.contains(entry.file.toUpperCase())) {
+                        if (!allCharSubsets.contains(entry.charset)) {
+                            allCharSubsets.add(entry.charset);
+                            extras.add(entry);
+                        } else {
+                            Main.trace("extended font config - already registered font for charset ''{0}'' - skipping ''{1}''",
+                                    entry.charset, entry.name);
+                        }
+                    } else {
+                        Main.trace("extended font config - Font ''{0}'' not found on system - skipping", entry.name);
+                    }
+                }
+                for (FontEntry entry: extras) {
+                    allCharSubsets.add(entry.charset);
+                    if ("".equals(entry.name)) {
+                        continue;
+                    }
+                    String key = "allfonts." + entry.charset;
+                    String value = entry.name;
+                    String prevValue = props.getProperty(key);
+                    if (prevValue != null && !prevValue.equals(value)) {
+                        Main.warn("extended font config - overriding ''{0}={1}'' with ''{2}''", key, prevValue, value);
+                    }
+                    w.append(key + "=" + value + "\n");
+                }
+                w.append("\n");
+                for (FontEntry entry: extras) {
+                    if ("".equals(entry.name) || "".equals(entry.file)) {
+                        continue;
+                    }
+                    String key = "filename." + entry.name.replace(" ", "_");
+                    String value = entry.file;
+                    String prevValue = props.getProperty(key);
+                    if (prevValue != null && !prevValue.equals(value)) {
+                        Main.warn("extended font config - overriding ''{0}={1}'' with ''{2}''", key, prevValue, value);
+                    }
+                    w.append(key + "=" + value + "\n");
+                }
+                w.append("\n");
+                String fallback = props.getProperty("sequence.fallback");
+                if (fallback != null) {
+                    w.append("sequence.fallback=" + fallback + "," + Utils.join(",", allCharSubsets) + "\n");
+                } else {
+                    w.append("sequence.fallback=" + Utils.join(",", allCharSubsets) + "\n");
+                }
+            }
+            Utils.updateSystemProperty("sun.awt.fontconfig", fontconfigFile.toString());
+        } catch (IOException ex) {
+            Main.error(ex);
+        }
+    }
+
+    /**
+     * Get a list of fonts that are installed on the system.
+     *
+     * Must be done without triggering the Java Font initialization.
+     * (See {@link #extendFontconfig(java.lang.String)}, have to set system
+     * property first, which is then read by sun.awt.FontConfiguration upon
+     * initialization.)
+     *
+     * @return list of file names
+     */
+    public Collection<String> getInstalledFonts() {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Get default list of additional fonts to add to the configuration.
+     *
+     * Java will choose thee first font in the list that can render a certain
+     * character.
+     *
+     * @return list of FontEntry objects
+     */
+    public Collection<FontEntry> getAdditionalFonts() {
+        throw new UnsupportedOperationException();
+    }
 }

trunk/src/org/openstreetmap/josm/tools/PlatformHookWindows.java

@@ -29 +29 @@
 
 import java.awt.GraphicsEnvironment;
-import java.io.BufferedWriter;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.Writer;
+import java.nio.file.DirectoryStream;
 import java.nio.file.FileSystems;
 import java.nio.file.Files;
@@ -51 +47 @@
 import java.security.spec.X509EncodedKeySpec;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.Enumeration;
 import java.util.List;
-import java.util.Properties;
 
 import javax.swing.JOptionPane;
+
 import org.openstreetmap.josm.Main;
 
@@ -96 +91 @@
 
     @Override
-    public void preStartupHook() {
-        extendFontconfig();
-    }
-    
-    /**
-     * Add more fallback fonts to the Java runtime, in order to get wider 
-     * unicode support.
-     * 
-     * The font configuration in Java doesn't include some Indic scripts,
-     * even though MS Windows ships with fonts that cover these unicode
-     * ranges.
-     * 
-     * To fix this, the fontconfig.properties template is copied to the JOSM
-     * cache folder. Then, the additional entries are added to the font
-     * configuration. Finally the system property "sun.awt.fontconfig" is set
-     * to the customized fontconfig.properties file.
-     * 
-     * This is a crude hack, but better than no font display at all for these
-     * languages.
-     * There is no guarantee, that the template file
-     * ($JAVA_HOME/lib/fontconfig.properties.src) matches the default
-     * configuration (which is in a binary format).
-     * Furthermore, the system property "sun.awt.fontconfig" is undocumented and
-     * may no longer work in future versions of Java.
-     */
-    protected void extendFontconfig() {
-        String customFontconfigFile = Main.pref.get("fontconfig.properties", null);
-        if (customFontconfigFile != null) {
-            Utils.updateSystemProperty("sun.awt.fontconfig", customFontconfigFile);
-            return;
-        }
-        if (!Main.pref.getBoolean("font.extended-unicode", true))
-            return;
-        String javaLibPath = System.getProperty("java.home") + File.separator + "lib";
-        Path templateFile = FileSystems.getDefault().getPath(javaLibPath, "fontconfig.properties.src");
-        if (!Files.isReadable(templateFile)) {
-            Main.warn("extended unicode - unable to find font config template file "+templateFile.toString());
-            return;
-        }
-        try {
-            Properties props = new Properties();
-            props.load(new FileInputStream(templateFile.toFile()));
-            byte[] content = Files.readAllBytes(templateFile);
-            File cachePath = Main.pref.getCacheDirectory();
-            Path fontconfigFile = cachePath.toPath().resolve("fontconfig.properties");
-            OutputStream os = Files.newOutputStream(fontconfigFile);
-            os.write(content);
-            try (Writer w = new BufferedWriter(new OutputStreamWriter(os))) {
-                Collection<Collection<String>> def = new ArrayList<>();
-                def.add(Arrays.asList("devanagari", "", "")); // just include in fallback list
-                                                              // no font definition needed
-                // all of the following fonts are available in Win XP and later
-                def.add(Arrays.asList("gujarati", "Shruti", "SHRUTI.TTF"));
-                def.add(Arrays.asList("kannada", "Tunga", "TUNGA.TTF"));
-                def.add(Arrays.asList("gurmuhi", "Raavi", "RAAVI.TTF"));
-                def.add(Arrays.asList("tamil", "Latha", "LATHA.TTF"));
-                def.add(Arrays.asList("telugu", "Gautami", "GAUTAMI.TTF"));
-                def.add(Arrays.asList("bengali", "Vrinda", "VRINDA.TTF"));
-                def.add(Arrays.asList("syriac", "Estrangelo Edessa", "ESTRE.TTF")); // ISO 639: arc
-                def.add(Arrays.asList("thaana", "MV Boli", "MVBOLI.TTF"));          // ISO 639: dv
-                def.add(Arrays.asList("malayalam", "Kartika", "KARTIKA.TTF"));      // ISO 639: ml; since XP SP2
-                Collection<Collection<String>> additions = 
-                        Main.pref.getArray("font.extended-unicode.added-items", def);
-                w.append("\n\n# Added by JOSM to extend unicode coverage of Java font support:\n\n");
-                List<String> allCharSubsets = new ArrayList<>();
-                for (Collection<String> entry: additions) {
-                    List<String> lentry = new ArrayList<>(entry);
-                    String charSubset = lentry.get(0);
-                    allCharSubsets.add(charSubset);
-                    String platformFontName = lentry.get(1);
-                    if ("".equals(platformFontName)) {
-                        continue;
-                    }
-                    String key = "allfonts." + charSubset;
-                    String value = platformFontName;
-                    String prevValue = props.getProperty(key);
-                    if (prevValue != null && !prevValue.equals(value)) {
-                        Main.warn("extended unicode - overriding " + key + "=" + prevValue + " with " + value);
-                    }
-                    w.append(key + "=" + value + "\n");
-                }
-                w.append("\n");
-                for (Collection<String> entry: additions) {
-                    List<String> lentry = new ArrayList<>(entry);
-                    String platformFontName = lentry.get(1);
-                    String fontFile = lentry.get(2);
-                    if ("".equals(platformFontName) || "".equals(fontFile)) {
-                        continue;
-                    }
-                    String key = "filename." + platformFontName;
-                    String value = fontFile;
-                    String prevValue = props.getProperty(key);
-                    if (prevValue != null && !prevValue.equals(value)) {
-                        Main.warn("extended unicode - overriding " + key + "=" + prevValue + " with " + value);
-                    }
-                    w.append(key + "=" + value + "\n");
-                }
-                w.append("\n");
-                String fallback = props.getProperty("sequence.fallback");
-                if (fallback != null) {
-                    w.append("sequence.fallback=" + fallback + "," + Utils.join(",", allCharSubsets) + "\n");
-                } else {
-                    w.append("sequence.fallback=" + Utils.join(",", allCharSubsets) + "\n");
-                }
-            }
-            Utils.updateSystemProperty("sun.awt.fontconfig", fontconfigFile.toString());
-        } catch (IOException ex) {
-            Main.error(ex);
-        }
-    }
-    
+    public void afterPrefStartupHook() {
+        extendFontconfig("fontconfig.properties.src");
+    }
+
     @Override
     public void openUrl(String url) throws IOException {
@@ -420 +308 @@
         return new File(System.getenv("APPDATA"), "JOSM");
     }
+
+    @Override
+    public Collection<String> getInstalledFonts() {
+        // Cannot use GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames()
+        // because we have to set the system property before Java initializes its fonts.
+        // Use more low-level method to find the installed fonts.
+        List<String> fontsAvail = new ArrayList<>();
+        Path fontPath = FileSystems.getDefault().getPath(System.getenv("SYSTEMROOT"), "Fonts");
+        try (DirectoryStream<Path> ds = Files.newDirectoryStream(fontPath)) {
+            for (Path p : ds) {
+                fontsAvail.add(p.getFileName().toString().toUpperCase());
+            }
+        } catch (IOException ex) {
+            Main.warn("extended font config - failed to load available Fonts");
+            fontsAvail = null;
+        }
+        fontsAvail.add(""); // for devanagari
+        return fontsAvail;
+    }
+
+    @Override
+    public Collection<FontEntry> getAdditionalFonts() {
+        Collection<FontEntry> def = new ArrayList<>();
+        def.add(new FontEntry("devanagari", "", "")); // just include in fallback list
+                                                      // font already defined in template
+        // Win 8 (and later)
+        def.add(new FontEntry("myanmar", "Myanmar Text", "MMRTEXT.TTF"));           // ISO 639: my
+
+        // Win 7 and later
+        def.add(new FontEntry("nko_tifinagh_vai_osmanya", "Ebrima", "EBRIMA.TTF")); // ISO 639: ber
+        def.add(new FontEntry("khmer1", "Khmer UI", "KHMERUI.TTF"));                // ISO 639: km
+        def.add(new FontEntry("lao1", "Lao UI", "LAOUI.TTF"));                      // ISO 639: lo
+
+        // Win Vista and later:
+        def.add(new FontEntry("ethiopic", "Nyala", "NYALA.TTF"));                   // ISO 639: am,gez,ti
+        def.add(new FontEntry("tibetan", "Microsoft Himalaya", "HIMALAYA.TTF"));    // ISO 639: bo,dz
+        def.add(new FontEntry("cherokee", "Plantagenet Cherokee", "PLANTC.TTF"));   // ISO 639: chr
+        def.add(new FontEntry("unified_canadian", "Euphemia", "EUPHEMIA.TTF"));     // ISO 639: cr,in
+        def.add(new FontEntry("khmer2", "DaunPenh", "DAUNPENH.TTF"));               // ISO 639: km
+        def.add(new FontEntry("khmer3", "MoolBoran", "MOOLBOR.TTF"));               // ISO 639: km
+        def.add(new FontEntry("lao_thai", "DokChampa", "DOKCHAMP.TTF"));            // ISO 639: lo
+        def.add(new FontEntry("mongolian", "Mongolian Baiti", "MONBAITI.TTF"));     // ISO 639: mn
+        def.add(new FontEntry("oriya", "Kalinga", "KALINGA.TTF"));                  // ISO 639: or
+        def.add(new FontEntry("sinhala", "Iskoola Pota", "ISKPOTA.TTF"));           // ISO 639: si
+
+        // Win XP and later
+        def.add(new FontEntry("gujarati", "Shruti", "SHRUTI.TTF"));
+        def.add(new FontEntry("kannada", "Tunga", "TUNGA.TTF"));
+        def.add(new FontEntry("gurmuhi", "Raavi", "RAAVI.TTF"));
+        def.add(new FontEntry("tamil", "Latha", "LATHA.TTF"));
+        def.add(new FontEntry("telugu", "Gautami", "GAUTAMI.TTF"));
+        def.add(new FontEntry("bengali", "Vrinda", "VRINDA.TTF"));
+        def.add(new FontEntry("syriac", "Estrangelo Edessa", "ESTRE.TTF"));         // ISO 639: arc
+        def.add(new FontEntry("thaana", "MV Boli", "MVBOLI.TTF"));                  // ISO 639: dv
+        def.add(new FontEntry("malayalam", "Kartika", "KARTIKA.TTF"));              // ISO 639: ml; since XP SP2
+
+        // Comes with MS Office & Outlook 2000. Good unicode coverage, so add if available.
+        def.add(new FontEntry("arialuni", "Arial Unicode MS", "ARIALUNI.TTF"));
+
+        return def;
+    }
+
 }