支持通过环境变量控制 UI 缩放比例

HMCL/src/main/java/org/jackhuang/hmcl/EntryPoint.java

@@ -46,11 +46,34 @@ public static void main(String[] args) {
         createHMCLDirectories();
         LOG.start(Metadata.HMCL_CURRENT_DIRECTORY.resolve("logs"));
 
+        checkDirectoryPath();
+        setupJavaFXVMOptions();
+
+        if (OperatingSystem.CURRENT_OS == OperatingSystem.MACOS)
+            initIcon();
+
+        checkJavaFX();
+        verifyJavaFX();
+        addEnableNativeAccess();
+        enableUnsafeMemoryAccess();
+
+        Launcher.main(args);
+    }
+
+    public static void exit(int exitCode) {
+        FileSaver.shutdown();
+        LOG.shutdown();
+        System.exit(exitCode);
+    }
+
+    private static void setupJavaFXVMOptions() {
         if ("true".equalsIgnoreCase(System.getenv("HMCL_FORCE_GPU")))
             System.getProperties().putIfAbsent("prism.forceGPU", "true");
 
         String animationFrameRate = System.getenv("HMCL_ANIMATION_FRAME_RATE");
         if (animationFrameRate != null) {
+            LOG.info("HMCL_ANIMATION_FRAME_RATE: " + animationFrameRate);
+
             try {
                 if (Integer.parseInt(animationFrameRate) <= 0)
                     throw new NumberFormatException(animationFrameRate);
@@ -61,23 +84,38 @@ public static void main(String[] args) {
             }
         }
 
-        checkDirectoryPath();
+        String uiScale = System.getProperty("hmcl.uiScale", System.getenv("HMCL_UI_SCALE"));
+        if (uiScale != null) {
+            uiScale = uiScale.trim();
 
-        if (OperatingSystem.CURRENT_OS == OperatingSystem.MACOS)
-            initIcon();
-
-        checkJavaFX();
-        verifyJavaFX();
-        addEnableNativeAccess();
-        enableUnsafeMemoryAccess();
+            LOG.info("HMCL_UI_SCALE: " + uiScale);
 
-        Launcher.main(args);
-    }
+            try {
+                float scaleValue;
+                if (uiScale.endsWith("%")) {
+                    scaleValue = Integer.parseInt(uiScale.substring(0, uiScale.length() - 1)) / 100.0f;
+                } else if (uiScale.endsWith("dpi") || uiScale.endsWith("DPI")) {
+                    scaleValue = Integer.parseInt(uiScale.substring(0, uiScale.length() - 3)) / 96.0f;
+                } else {
+                    scaleValue = Float.parseFloat(uiScale);
+                }
 
-    public static void exit(int exitCode) {
-        FileSaver.shutdown();
-        LOG.shutdown();
-        System.exit(exitCode);
+                // JavaFX behavior may be abnormal when the DPI scaling factor is too high
+                if (scaleValue >= 0.25 && scaleValue <= 6) {
+                    if (OperatingSystem.CURRENT_OS != OperatingSystem.MACOS) {
+                        if (OperatingSystem.CURRENT_OS == OperatingSystem.WINDOWS) {
+                            System.getProperties().putIfAbsent("glass.win.uiScale", uiScale);
+                        } else {
+                            System.getProperties().putIfAbsent("glass.gtk.uiScale", uiScale);
+                        }
+                    }
+                } else {
+                    LOG.warning("UI scale out of range: " + uiScale);
+                }
+            } catch (Throwable e) {
+                LOG.warning("Invalid DPI scale: " + uiScale);
+            }
+        }
     }
 
     private static void createHMCLDirectories() {