在 Linux 平台通过 fc-match 查询默认字体 (#3922)

HMCL/src/main/java/org/jackhuang/hmcl/setting/FontManager.java

@@ -23,10 +23,14 @@ import javafx.scene.text.Font;
 import org.jackhuang.hmcl.Metadata;
 import org.jackhuang.hmcl.util.Lazy;
 import org.jackhuang.hmcl.util.io.JarUtils;
+import org.jackhuang.hmcl.util.platform.OperatingSystem;
+import org.jackhuang.hmcl.util.platform.SystemUtils;
 
 import java.net.MalformedURLException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Locale;
 
 import static org.jackhuang.hmcl.setting.ConfigHolder.config;
 import static org.jackhuang.hmcl.util.logging.Logger.LOG;
@@ -52,15 +56,33 @@ public final class FontManager {
             return font;
 
         Path thisJar = JarUtils.thisJarPath();
-        if (thisJar != null && thisJar.getParent() != null)
+        if (thisJar != null && thisJar.getParent() != null) {
-            return tryLoadDefaultFont(thisJar.getParent());
+            font = tryLoadDefaultFont(thisJar.getParent());
+            if (font != null)
+                return font;
+        }
 
-        return null;
+        if (OperatingSystem.CURRENT_OS.isLinuxOrBSD()
+                && Locale.getDefault() != Locale.ROOT
+                && !"en".equals(Locale.getDefault().getLanguage()))
+            return findByFcMatch();
+        else
+            return null;
     });
 
-    private static final ObjectProperty<Font> fontProperty = new SimpleObjectProperty<>(getDefaultFont());
+    private static final ObjectProperty<Font> fontProperty;
 
     static {
+        String fontFamily = config().getLauncherFontFamily();
+        if (fontFamily == null)
+            fontFamily = System.getProperty("hmcl.font.override");
+        if (fontFamily == null)
+            fontFamily = System.getenv("HMCL_FONT");
+
+        Font font = fontFamily == null ? DEFAULT_FONT.get() : Font.font(fontFamily, DEFAULT_FONT_SIZE);
+        fontProperty = new SimpleObjectProperty<>(font);
+
+        LOG.info("Font: " + (font != null ? font.getName() : Font.getDefault().getName()));
         fontProperty.addListener((obs, oldValue, newValue) -> {
             if (newValue != null)
                 config().setLauncherFontFamily(newValue.getFamily());
@@ -90,14 +112,29 @@ public final class FontManager {
         return null;
     }
 
-    private static Font getDefaultFont() {
+    public static Font findByFcMatch() {
-        String fontFamily = config().getLauncherFontFamily();
+        Path fcMatch = SystemUtils.which("fc-match");
-        if (fontFamily == null)
+        if (fcMatch == null)
-            fontFamily = System.getProperty("hmcl.font.override");
+            return null;
-        if (fontFamily == null)
-            fontFamily = System.getenv("HMCL_FONT");
 
-        return fontFamily == null ? DEFAULT_FONT.get() : Font.font(fontFamily, DEFAULT_FONT_SIZE);
+        try {
+            String path = SystemUtils.run(fcMatch.toString(),
+                    ":lang=" + Locale.getDefault().toLanguageTag(),
+                    "--format", "%{file}").trim();
+            Path file = Paths.get(path).toAbsolutePath().normalize();
+            if (!Files.isRegularFile(file)) {
+                LOG.warning("Font file does not exist: " + path);
+                return null;
+            }
+
+            Font font = Font.loadFont(file.toUri().toURL().toExternalForm(), DEFAULT_FONT_SIZE);
+            if (font == null)
+                LOG.warning("Failed to load font from " + path);
+            return font;
+        } catch (Throwable e) {
+            LOG.warning("Failed to get default font with fc-match", e);
+            return null;
+        }
     }
 
     public static ObjectProperty<Font> fontProperty() {

HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/SystemUtils.java

@@ -21,6 +21,7 @@ import org.jackhuang.hmcl.java.JavaRuntime;
 import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.util.Lang;
 import org.jackhuang.hmcl.util.function.ExceptionalFunction;
+import org.jackhuang.hmcl.util.io.IOUtils;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
@@ -75,6 +76,11 @@ public final class SystemUtils {
         return managedProcess.getProcess().waitFor();
     }
 
+    public static String run(String... command) throws Exception {
+        return run(Arrays.asList(command),
+                inputStream -> IOUtils.readFullyAsString(inputStream, OperatingSystem.NATIVE_CHARSET));
+    }
+
     public static <T> T run(List<String> command, ExceptionalFunction<InputStream, T, ?> convert) throws Exception {
         File nul = OperatingSystem.CURRENT_OS == OperatingSystem.WINDOWS
                 ? new File("NUL")

HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/macos/MacOSHardwareDetector.java

@@ -23,7 +23,6 @@ import com.google.gson.JsonObject;
 import org.jackhuang.hmcl.util.KeyValuePairUtils;
 import org.jackhuang.hmcl.util.StringUtils;
 import org.jackhuang.hmcl.util.gson.JsonUtils;
-import org.jackhuang.hmcl.util.io.IOUtils;
 import org.jackhuang.hmcl.util.platform.OperatingSystem;
 import org.jackhuang.hmcl.util.platform.SystemUtils;
 import org.jackhuang.hmcl.util.platform.hardware.CentralProcessor;
@@ -103,8 +102,7 @@ public final class MacOSHardwareDetector extends HardwareDetector {
 
         String json = null;
         try {
-            json = SystemUtils.run(Arrays.asList("/usr/sbin/system_profiler", "SPDisplaysDataType", "-json"),
+            json = SystemUtils.run("/usr/sbin/system_profiler", "SPDisplaysDataType", "-json");
-                    inputStream -> IOUtils.readFullyAsString(inputStream, OperatingSystem.NATIVE_CHARSET));
 
             JsonObject object = JsonUtils.GSON.fromJson(json, JsonObject.class);
             JsonArray spDisplaysDataType = object.getAsJsonArray("SPDisplaysDataType");