Add bindings for half leading to TextStye and StrutStyle (#535)

This will allow us to create vertically centered text with custom line height

(cherry picked from commit f6f5338c1239625dd3ddf0e3b0e56b393e8a43ae)

skiko/src/commonMain/kotlin/org/jetbrains/skia/paragraph/StrutStyle.kt

@@ -175,6 +175,23 @@ class StrutStyle internal constructor(ptr: NativePointer) : Managed(ptr, _Finali
         return this
     }
 
+    var isHalfLeading: Boolean
+        get() = try {
+            Stats.onNativeCall()
+            _nIsHalfLeading(_ptr)
+        } finally {
+            reachabilityBarrier(this)
+        }
+        set(value) {
+            setHalfLeading(value)
+        }
+
+    fun setHalfLeading(value: Boolean): StrutStyle {
+        Stats.onNativeCall()
+        _nSetHalfLeading(_ptr, value)
+        return this
+    }
+
     private object _FinalizerHolder {
         val PTR = StrutStyle_nGetFinalizer()
     }
@@ -237,3 +254,9 @@ private external fun _nIsHeightOverridden(ptr: NativePointer): Boolean
 
 @ExternalSymbolName("org_jetbrains_skia_paragraph_StrutStyle__1nSetHeightOverridden")
 private external fun _nSetHeightOverridden(ptr: NativePointer, value: Boolean)
+
+@ExternalSymbolName("org_jetbrains_skia_paragraph_StrutStyle__1nIsHalfLeading")
+private external fun _nIsHalfLeading(ptr: NativePointer): Boolean
+
+@ExternalSymbolName("org_jetbrains_skia_paragraph_StrutStyle__1nSetHalfLeading")
+private external fun _nSetHalfLeading(ptr: NativePointer, value: Boolean)

skiko/src/commonMain/kotlin/org/jetbrains/skia/paragraph/TextStyle.kt

@@ -274,6 +274,23 @@ class TextStyle internal constructor(ptr: NativePointer) : Managed(ptr, _Finaliz
         return this
     }
 
+    var isHalfLeading: Boolean
+        get() = try {
+            Stats.onNativeCall()
+            TextStyle_nIsHalfLeading(_ptr)
+        } finally {
+            reachabilityBarrier(this)
+        }
+        set(value) {
+            setHalfLeading(value)
+        }
+
+    fun setHalfLeading(value: Boolean): TextStyle {
+        Stats.onNativeCall()
+        TextStyle_nSetHalfLeading(_ptr, value)
+        return this
+    }
+
     var letterSpacing: Float
         get() = try {
             Stats.onNativeCall()
@@ -448,6 +465,12 @@ private external fun TextStyle_nGetHeight(ptr: NativePointer): Float
 @ExternalSymbolName("org_jetbrains_skia_paragraph_TextStyle__1nSetHeight")
 private external fun TextStyle_nSetHeight(ptr: NativePointer, override: Boolean, height: Float)
 
+@ExternalSymbolName("org_jetbrains_skia_paragraph_TextStyle__1nIsHalfLeading")
+private external fun TextStyle_nIsHalfLeading(ptr: NativePointer): Boolean
+
+@ExternalSymbolName("org_jetbrains_skia_paragraph_TextStyle__1nSetHalfLeading")
+private external fun TextStyle_nSetHalfLeading(ptr: NativePointer, value: Boolean)
+
 @ExternalSymbolName("org_jetbrains_skia_paragraph_TextStyle__1nGetBaselineShift")
 private external fun TextStyle_nGetBaselineShift(ptr: NativePointer): Float
 

skiko/src/jvmMain/cpp/common/paragraph/StrutStyle.cc

@@ -133,3 +133,15 @@ extern "C" JNIEXPORT void JNICALL Java_org_jetbrains_skia_paragraph_StrutStyleKt
     StrutStyle* instance = reinterpret_cast<StrutStyle*>(static_cast<uintptr_t>(ptr));
     instance->setHeightOverride(value);
 }
+
+extern "C" JNIEXPORT jboolean JNICALL Java_org_jetbrains_skia_paragraph_StrutStyleKt__1nIsHalfLeading
+  (JNIEnv* env, jclass jclass, jlong ptr) {
+    StrutStyle* instance = reinterpret_cast<StrutStyle*>(static_cast<uintptr_t>(ptr));
+    return instance->getHalfLeading();
+}
+
+extern "C" JNIEXPORT void JNICALL Java_org_jetbrains_skia_paragraph_StrutStyleKt__1nSetHalfLeading
+  (JNIEnv* env, jclass jclass, jlong ptr, jboolean value) {
+    StrutStyle* instance = reinterpret_cast<StrutStyle*>(static_cast<uintptr_t>(ptr));
+    instance->setHalfLeading(value);
+}

skiko/src/jvmMain/cpp/common/paragraph/TextStyle.cc

@@ -245,6 +245,18 @@ extern "C" JNIEXPORT void JNICALL Java_org_jetbrains_skia_paragraph_TextStyleKt_
     instance->setHeight(height);
 }
 
+extern "C" JNIEXPORT jboolean JNICALL Java_org_jetbrains_skia_paragraph_TextStyleKt_TextStyle_1nIsHalfLeading
+  (JNIEnv* env, jclass jclass, jlong ptr) {
+    TextStyle* instance = reinterpret_cast<TextStyle*>(static_cast<uintptr_t>(ptr));
+    return instance->getHalfLeading();
+}
+
+extern "C" JNIEXPORT void JNICALL Java_org_jetbrains_skia_paragraph_TextStyleKt_TextStyle_1nSetHalfLeading
+  (JNIEnv* env, jclass jclass, jlong ptr, jboolean value) {
+    TextStyle* instance = reinterpret_cast<TextStyle*>(static_cast<uintptr_t>(ptr));
+    instance->setHalfLeading(value);
+}
+
 extern "C" JNIEXPORT jfloat JNICALL Java_org_jetbrains_skia_paragraph_TextStyleKt_TextStyle_1nGetBaselineShift
   (JNIEnv* env, jclass jclass, jlong ptr) {
     TextStyle* instance = reinterpret_cast<TextStyle*>(static_cast<uintptr_t>(ptr));

skiko/src/nativeJsMain/cpp/paragraph/StrutStyle.cc

@@ -133,3 +133,15 @@ SKIKO_EXPORT void org_jetbrains_skia_paragraph_StrutStyle__1nSetHeightOverridden
     StrutStyle* instance = reinterpret_cast<StrutStyle*>(ptr);
     instance->setHeightOverride(value);
 }
+
+SKIKO_EXPORT KBoolean org_jetbrains_skia_paragraph_StrutStyle__1nIsHalfLeading
+  (KNativePointer ptr) {
+    StrutStyle* instance = reinterpret_cast<StrutStyle*>(ptr);
+    return instance->getHalfLeading();
+}
+
+SKIKO_EXPORT void org_jetbrains_skia_paragraph_StrutStyle__1nSetHalfLeading
+  (KNativePointer ptr, KBoolean value) {
+    StrutStyle* instance = reinterpret_cast<StrutStyle*>(ptr);
+    instance->setHalfLeading(value);
+}

skiko/src/nativeJsMain/cpp/paragraph/TextStyle.cc

@@ -243,6 +243,18 @@ SKIKO_EXPORT void org_jetbrains_skia_paragraph_TextStyle__1nSetHeight
     instance->setHeight(height);
 }
 
+SKIKO_EXPORT KFloat org_jetbrains_skia_paragraph_TextStyle__1nGetHalfLeading
+  (KNativePointer ptr) {
+    TextStyle* instance = reinterpret_cast<TextStyle*>(ptr);
+    return instance->getHalfLeading();
+}
+
+SKIKO_EXPORT void org_jetbrains_skia_paragraph_TextStyle__1nSetHalfLeading
+  (KNativePointer ptr, KBoolean halfLeading) {
+    TextStyle* instance = reinterpret_cast<TextStyle*>(ptr);
+    instance->setHalfLeading(halfLeading);
+}
+
 SKIKO_EXPORT KFloat org_jetbrains_skia_paragraph_TextStyle__1nGetBaselineShift
   (KNativePointer ptr) {
     TextStyle* instance = reinterpret_cast<TextStyle*>(ptr);