feat: extend all platform abstractions

lib/dotnet/AlphaSkia/AlphaSkiaCanvas.cs

@@ -20,6 +20,26 @@ public static AlphaSkiaColorType ColorType
         }
     }
 
+    /// <summary>
+    /// Switches the rendering to use the operating system font manager and font rendering. 
+    /// This results in a platform specific display of any rendered texts and allows using of any
+    /// fonts installed on the system.
+    /// </summary>
+    public static void SwitchToOperatingSystemFonts()
+    {
+        NativeMethods.alphaskia_switch_to_operating_system_fonts();
+    }
+
+    /// <summary>
+    /// Switches the rendering to use the FreeType font manager and font rendering. 
+    /// This results in a platform independent display of any rendered texts achieving consistent rendering. 
+    /// Operating system fonts cannot be used in this mode.
+    /// </summary>
+    public static void SwitchToFreeTypeFonts()
+    {
+        NativeMethods.alphaskia_switch_to_freetype_fonts();
+    }
+
     /// <summary>
     /// Initializes a new empty instance of the <see cref="AlphaSkiaCanvas"/> class.
     /// </summary>

lib/dotnet/AlphaSkia/NativeMethods.cs

@@ -13,6 +13,10 @@ internal static class NativeMethods
 
     [DllImport(AlphaSkiaNativeLibName, CallingConvention = CallingConvention.Cdecl)]
     public static extern int alphaskia_get_color_type();
+    [DllImport(AlphaSkiaNativeLibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern void alphaskia_switch_to_freetype_fonts();
+    [DllImport(AlphaSkiaNativeLibName, CallingConvention = CallingConvention.Cdecl)]
+    public static extern void alphaskia_switch_to_operating_system_fonts();
 
 
     [DllImport(AlphaSkiaNativeLibName, CallingConvention = CallingConvention.Cdecl)]

lib/java/jni/src/AlphaSkiaCanvas.cpp

@@ -242,4 +242,12 @@ extern "C"
     {
         return static_cast<jint>(alphaskia_get_color_type());
     }
-}
+
+    JNIEXPORT jint JNICALL Java_alphaTab_alphaSkia_AlphaSkiaCanvas_switchToFreeTypeFonts(JNIEnv *, jclass) {
+        alphaskia_switch_to_freetype_fonts();
+    }
+
+    JNIEXPORT jint JNICALL Java_alphaTab_alphaSkia_AlphaSkiaCanvas_switchToOperatingSystemFonts(JNIEnv *, jclass) {
+        alphaskia_switch_to_operating_system_fonts();
+    }
+}

lib/java/main/src/main/java/alphaTab/alphaSkia/AlphaSkiaCanvas.java

@@ -244,4 +244,18 @@ public native void fillText(String text, AlphaSkiaTypeface typeface, float fontS
     private native static long alphaskiaCanvasAllocate();
 
     private static native int alphaskiaColorType();
+
+    /**
+     * Switches the rendering to use the operating system font manager and font rendering. 
+     * This results in a platform specific display of any rendered texts and allows using of any
+     * fonts installed on the system.
+     */
+    public static native int switchToFreeTypeFonts();
+
+    /**
+     * Switches the rendering to use the FreeType font manager and font rendering. 
+     * This results in a platform independent display of any rendered texts achieving consistent rendering. 
+     * Operating system fonts cannot be used in this mode.
+     */
+    public static native int switchToOperatingSystemFonts();
 }

lib/node/addon/addon.cpp

@@ -183,6 +183,24 @@ static napi_value node_alphaskia_get_color_type(napi_env env, napi_callback_info
   return node_color_type;
 }
 
+static napi_value node_alphaskia_switch_to_freetype_fonts(napi_env env, napi_callback_info info)
+{
+  napi_status status(napi_ok);
+
+  alphaskia_switch_to_freetype_fonts();
+
+  RETURN_UNDEFINED();
+}
+
+static napi_value node_alphaskia_switch_to_operating_system_fonts(napi_env env, napi_callback_info info)
+{
+  napi_status status(napi_ok);
+
+  alphaskia_switch_to_operating_system_fonts();
+
+  RETURN_UNDEFINED();
+}
+
 static napi_value node_alphaskia_data_new_copy(napi_env env, napi_callback_info info)
 {
   napi_status status(napi_ok);
@@ -824,6 +842,8 @@ napi_value init(napi_env env, napi_value exports)
   std::vector<napi_property_descriptor> methods;
 
   EXPORT_NODE_FUNCTION(alphaskia_get_color_type);
+  EXPORT_NODE_FUNCTION(alphaskia_switch_to_freetype_fonts);
+  EXPORT_NODE_FUNCTION(alphaskia_switch_to_operating_system_fonts);
 
   EXPORT_NODE_FUNCTION(alphaskia_data_new_copy);
   EXPORT_NODE_FUNCTION(alphaskia_data_get_data);

lib/node/alphaskia/src/addon.ts

@@ -70,6 +70,8 @@ export enum AlphaSkiaColorType {
  */
 export interface AlphaSkiaNodeAddon {
     alphaskia_get_color_type(): AlphaSkiaColorType;
+    alphaskia_switch_to_freetype_fonts(): void;
+    alphaskia_switch_to_operating_system_fonts(): void;
 
     alphaskia_data_new_copy(data: ArrayBuffer): AlphaSkiaDataHandle | undefined;
     alphaskia_data_get_data(data: AlphaSkiaDataHandle): ArrayBuffer;

wrapper/src/alphaskia_canvas.cpp

@@ -21,21 +21,15 @@ extern "C"
     AS_API void alphaskia_switch_to_freetype_fonts()
     {
         sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault();
-        SkFontMgr_AlphaSkia *afm = dynamic_cast<SkFontMgr_AlphaSkia *>(fm.get());
-        if (afm != nullptr)
-        {
-            afm->switch_to_freetype_fonts();
-        }
+        SkFontMgr_AlphaSkia *afm = reinterpret_cast<SkFontMgr_AlphaSkia *>(fm.get());
+        afm->switch_to_freetype_fonts();
     }
 
     AS_API void alphaskia_switch_to_operating_system_fonts()
     {
         sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault();
-        SkFontMgr_AlphaSkia *afm = dynamic_cast<SkFontMgr_AlphaSkia *>(fm.get());
-        if (afm != nullptr)
-        {
-            afm->switch_to_operating_system_fonts();
-        }
+        SkFontMgr_AlphaSkia *afm = reinterpret_cast<SkFontMgr_AlphaSkia *>(fm.get());
+        afm->switch_to_operating_system_fonts();
     }
 
     AS_API int32_t alphaskia_get_color_type()