fix: add stretch_inner to NineSlice Gui-Meta

api/src/main/java/team/unnamed/creative/metadata/gui/GuiScaling.java

@@ -76,13 +76,14 @@ public interface GuiScaling extends Examinable {
      * @param height The number of pixels for the sprite to cover
      *               on-screen across its height, must be positive
      * @param border The border sizes
+     * @param stretchInner If the texture should be stretched instead of tiled
      * @return The created {@link GuiScaling} instance
      * @sinceMinecraft 1.20.2
      * @sincePackFormat 18
      * @since 1.2.0
      */
-    static @NotNull NineSliceGuiScaling nineSlice(final int width, final int height, final @NotNull GuiBorder border) {
-        return new NineSliceGuiScalingImpl(width, height, border);
+    static @NotNull NineSliceGuiScaling nineSlice(final int width, final int height, final @NotNull GuiBorder border, final boolean stretchInner) {
+        return new NineSliceGuiScalingImpl(width, height, border, stretchInner);
     }
 
     /**
@@ -95,12 +96,13 @@ public interface GuiScaling extends Examinable {
      * @param height The number of pixels for the sprite to cover
      *               on-screen across its height, must be positive
      * @param border The border size for all sides
+     * @param stretchInner If the texture should be stretched instead of tiled
      * @return The created {@link GuiScaling} instance
      * @sinceMinecraft 1.20.2
      * @sincePackFormat 18
      * @since 1.2.0
      */
-    static @NotNull NineSliceGuiScaling nineSlice(final int width, final int height, final int border) {
-        return new NineSliceGuiScalingImpl(width, height, GuiBorder.border(border));
+    static @NotNull NineSliceGuiScaling nineSlice(final int width, final int height, final int border, final boolean stretchInner) {
+        return new NineSliceGuiScalingImpl(width, height, GuiBorder.border(border), stretchInner);
     }
 }

api/src/main/java/team/unnamed/creative/metadata/gui/NineSliceGuiScaling.java

@@ -33,7 +33,7 @@
  *
  * @sinceMinecraft 1.20.2
  * @sincePackFormat 18
- * @see GuiScaling#nineSlice(int, int, GuiBorder)
+ * @see GuiScaling#nineSlice(int, int, GuiBorder, boolean)
  * @since 1.2.0
  */
 @ApiStatus.NonExtendable
@@ -71,4 +71,14 @@ public interface NineSliceGuiScaling extends GuiScaling {
      * @since 1.2.0
      */
     @NotNull GuiBorder border();
+
+    /**
+     * Returns if inner parts of texture is stretched instead of tiled
+     *
+     * @return if inner parts are stretched
+     * @sinceMinecraft 1.21.2
+     * @sincePackFormat 42
+     * @since 1.7.7
+     */
+    boolean stretchInner();
 }

api/src/main/java/team/unnamed/creative/metadata/gui/NineSliceGuiScalingImpl.java

@@ -36,11 +36,13 @@ final class NineSliceGuiScalingImpl implements NineSliceGuiScaling {
     private final int width;
     private final int height;
     private final GuiBorder border;
+    private final boolean stretchInner;
 
-    NineSliceGuiScalingImpl(final int width, final int height, final @NotNull GuiBorder border) {
+    NineSliceGuiScalingImpl(final int width, final int height, final @NotNull GuiBorder border, final boolean stretchInner) {
         this.width = width;
         this.height = height;
         this.border = requireNonNull(border, "border");
+        this.stretchInner = stretchInner;
         validate();
     }
 
@@ -71,12 +73,18 @@ public int height() {
         return border;
     }
 
+    @Override
+    public boolean stretchInner() {
+        return stretchInner;
+    }
+
     @Override
     public @NotNull Stream<? extends ExaminableProperty> examinableProperties() {
         return Stream.of(
                 ExaminableProperty.of("width", width),
                 ExaminableProperty.of("height", height),
-                ExaminableProperty.of("border", border)
+                ExaminableProperty.of("border", border),
+                ExaminableProperty.of("stretch_inner", stretchInner)
         );
     }
 
@@ -92,14 +100,16 @@ public boolean equals(final @Nullable Object o) {
         final NineSliceGuiScalingImpl that = (NineSliceGuiScalingImpl) o;
         if (width != that.width) return false;
         if (height != that.height) return false;
-        return border.equals(that.border);
+        if (!border.equals(that.border)) return false;
+        return stretchInner == that.stretchInner;
     }
 
     @Override
     public int hashCode() {
         int result = width;
         result = 31 * result + height;
         result = 31 * result + border.hashCode();
+        result = 31 * result + (stretchInner ? 1 : 0);
         return result;
     }
 }

gradle.properties

@@ -1,5 +1,5 @@
 group=team.unnamed
-version=1.7.4
+version=1.7.7-SNAPSHOT
 description=A resource-pack library for Minecraft: Java Edition.
 repositoryName=ossrh
 snapshotRepository=https\://s01.oss.sonatype.org/content/repositories/snapshots/

serializer-minecraft/src/main/java/team/unnamed/creative/serialize/minecraft/metadata/GuiMetaCodec.java

@@ -85,7 +85,8 @@ final class GuiMetaCodec implements MetadataPartCodec<GuiMeta> {
                         border = GuiBorder.border(top, bottom, left, right);
                     }
                 }
-                return GuiMeta.of(GuiScaling.nineSlice(width, height, border));
+                final boolean stretchInner = GsonUtil.getBoolean(scalingNode, "stretch_inner", false);
+                return GuiMeta.of(GuiScaling.nineSlice(width, height, border, stretchInner));
             }
             default:
                 throw new IllegalArgumentException("Unknown gui scaling type: " + typeString);
@@ -129,6 +130,7 @@ public void write(final @NotNull JsonWriter writer, final @NotNull GuiMeta value
                         .name("right").value(right)
                         .endObject();
             }
+            writer.name("stretch_inner").value(nineSlice.stretchInner());
         }
         writer.endObject();
         writer.endObject();

serializer-minecraft/src/test/java/team/unnamed/creative/serialize/minecraft/metadata/GuiMetaTest.java

@@ -42,15 +42,15 @@ class GuiMetaTest {
     @Test
     void test_deserialization() throws IOException {
         final Map<String, GuiScaling> expectations = new HashMap<>();
-        expectations.put("button.png.mcmeta", GuiScaling.nineSlice(200, 20, 3));
-        expectations.put("button_disabled.png.mcmeta", GuiScaling.nineSlice(200, 20, 1));
-        expectations.put("slider_handle.png.mcmeta", GuiScaling.nineSlice(8, 20, GuiBorder.border(2, 3, 2, 2)));
-        expectations.put("slider_handle_highlighted.png.mcmeta", GuiScaling.nineSlice(8, 20, GuiBorder.border(2, 3, 2, 2)));
+        expectations.put("button.png.mcmeta", GuiScaling.nineSlice(200, 20, 3, true));
+        expectations.put("button_disabled.png.mcmeta", GuiScaling.nineSlice(200, 20, 1, false));
+        expectations.put("slider_handle.png.mcmeta", GuiScaling.nineSlice(8, 20, GuiBorder.border(2, 3, 2, 2), false));
+        expectations.put("slider_handle_highlighted.png.mcmeta", GuiScaling.nineSlice(8, 20, GuiBorder.border(2, 3, 2, 2), false));
         expectations.put("stretch_custom.png.mcmeta", GuiScaling.stretch());
         expectations.put("tile_custom.png.mcmeta", GuiScaling.tile(8, 20));
         expectations.put("tile_custom_2.png.mcmeta", GuiScaling.tile(200, 20));
         expectations.put("tile_custom_3.png.mcmeta", GuiScaling.tile(200, 26));
-        expectations.put("title_box.png.mcmeta", GuiScaling.nineSlice(200, 26, 10));
+        expectations.put("title_box.png.mcmeta", GuiScaling.nineSlice(200, 26, 10, false));
 
         for (final Map.Entry<String, GuiScaling> entry : expectations.entrySet()) {
             final Metadata metadata;

serializer-minecraft/src/test/resources/metadata/gui/button.png.mcmeta

@@ -4,7 +4,8 @@
             "type": "nine_slice",
             "width": 200,
             "height": 20,
-            "border": 3
+            "border": 3,
+            "stretch_inner": true
         }
     }
 }