convert screen renderer to java

Author: lineargraph

common/src/main/java/io/github/notenoughupdates/moulconfig/common/IMinecraft.java

@@ -4,6 +4,7 @@
 import io.github.notenoughupdates.moulconfig.gui.GuiComponent;
 import io.github.notenoughupdates.moulconfig.gui.GuiContext;
 import io.github.notenoughupdates.moulconfig.gui.GuiElement;
+import io.github.notenoughupdates.moulconfig.gui.GuiElementComponent;
 import io.github.notenoughupdates.moulconfig.internal.InitUtil;
 import io.github.notenoughupdates.moulconfig.internal.MCLogger;
 import io.github.notenoughupdates.moulconfig.internal.Warnings;
@@ -36,6 +37,13 @@ public interface IMinecraft {
 
     Pair<Double, Double> getMousePositionHF();
 
+    default Pair<Integer, Integer> getMousePosition() {
+        var mousePositionHF = getMousePositionHF();
+        return new Pair<>(
+                mousePositionHF.getFirst().intValue(),
+                mousePositionHF.getSecond().intValue());
+    }
+
     default int getMouseX() {
         return (int) getMouseXHF();
     }
@@ -102,7 +110,9 @@ default void sendChatMessage(StructuredText message) {
     @Deprecated
     RenderContext provideTopLevelRenderContext();
 
-    void openWrappedScreen(GuiElement guiElement);
+    default void openWrappedScreen(GuiElement guiElement) {
+        openWrappedScreen(new GuiElementComponent(guiElement));
+    }
 
     void openWrappedScreen(GuiContext guiContext);
 

common/src/main/java/io/github/notenoughupdates/moulconfig/gui/GuiContext.java

@@ -23,6 +23,7 @@
 import lombok.Getter;
 import lombok.Setter;
 import lombok.ToString;
+import org.jspecify.annotations.Nullable;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -38,11 +39,11 @@ public class GuiContext {
      * The root element of this GuiContext
      */
     public final GuiComponent root;
-    public GuiComponent focusedElement;
+    private @Nullable GuiComponent focusedElement;
     public List<FloatingGuiElement> floatingWindows = new ArrayList<>();
     public Runnable closeRequestHandler;
 
-    public void setFocusedElement(GuiComponent focusedElement) {
+    public void setFocusedElement(@Nullable GuiComponent focusedElement) {
         if (this.focusedElement == focusedElement) return;
         GuiComponent oldElement = this.focusedElement;
         if (oldElement != null)

common/src/main/java/io/github/notenoughupdates/moulconfig/gui/GuiElement.java

@@ -20,7 +20,9 @@
 
 package io.github.notenoughupdates.moulconfig.gui;
 
-
+/**
+ * Can be adapted as a {@link GuiComponent} using {@link GuiElementComponent}
+ */
 public abstract class GuiElement {
     public abstract void render();
 

common/src/main/java/io/github/notenoughupdates/moulconfig/gui/GuiElementComponent.java

@@ -0,0 +1,50 @@
+package io.github.notenoughupdates.moulconfig.gui;
+
+import io.github.notenoughupdates.moulconfig.internal.Warnings;
+import lombok.EqualsAndHashCode;
+import lombok.Value;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Adapts a {@link GuiElement} as a {@link GuiComponent} that renders on the entire screen. Not applicable to be used in transformed situations.
+ */
+@EqualsAndHashCode(callSuper = true)
+@Value
+public class GuiElementComponent extends GuiComponent {
+    GuiElement element;
+
+    @Override
+    public void setContext(GuiContext context) {
+        super.setContext(context);
+        if (context.getRoot() != this)
+            Warnings.warn("Mounting GuiElementComponent at location other than root. This can cause issues.");
+    }
+
+    @Override
+    public int getWidth() {
+        return mc.getScaledWidth();
+    }
+
+    @Override
+    public int getHeight() {
+        return mc.getScaledHeight();
+    }
+
+    @Override
+    public void render(@NotNull GuiImmediateContext context) {
+        if (context.getRenderOffsetX() != 0 || context.getRenderOffsetY() != 0) {
+            Warnings.warn("Cannot render GuiElement with a pretransformed matrix stack");
+        }
+        element.render();
+    }
+
+    @Override
+    public boolean mouseEvent(@NotNull MouseEvent mouseEvent, @NotNull GuiImmediateContext context) {
+        return element.mouseInput(context.getMouseX(), context.getMouseY(), mouseEvent);
+    }
+
+    @Override
+    public boolean keyboardEvent(@NotNull KeyboardEvent event, @NotNull GuiImmediateContext context) {
+        return element.keyboardInput(event);
+    }
+}

common/src/main/java/io/github/notenoughupdates/moulconfig/gui/KeyboardEvent.kt

@@ -2,5 +2,5 @@ package io.github.notenoughupdates.moulconfig.gui
 
 sealed interface KeyboardEvent {
     data class CharTyped(val char: Char) : KeyboardEvent
-    data class KeyPressed(val keycode: Int, val pressed: Boolean) : KeyboardEvent
+    data class KeyPressed(val keycode: Int, val scancode: Int, val pressed: Boolean) : KeyboardEvent
 }