Add EnumButton

src/main/kotlin/net/shadowfacts/asmr/TestCacaoScreen.kt

@@ -1,6 +1,7 @@
 package net.shadowfacts.asmr
 
 import net.minecraft.util.Identifier
+import net.shadowfacts.asmr.util.RedstoneMode
 import net.shadowfacts.kiwidsl.dsl
 import net.shadowfacts.cacao.CacaoScreen
 import net.shadowfacts.cacao.Window
@@ -11,6 +12,7 @@ import net.shadowfacts.cacao.util.NinePatchTexture
 import net.shadowfacts.cacao.util.Texture
 import net.shadowfacts.cacao.view.*
 import net.shadowfacts.cacao.view.button.Button
+import net.shadowfacts.cacao.view.button.EnumButton
 
 /**
  * @author shadowfacts
@@ -33,11 +35,9 @@ class TestCacaoScreen: CacaoScreen() {
 				intrinsicContentSize = Size(50.0, 50.0)
 				backgroundColor = Color(0x0000ff)
 			})
-			val purple = blue.addSubview(Button(Label("Hello, button!").apply {
+			val purple = blue.addSubview(EnumButton(RedstoneMode.HIGH, RedstoneMode.Companion::localize).apply {
-				textColor = Color.WHITE
-			}).apply {
 				handler = {
-					println("$it clicked!")
+					println("enum button clicked, new value: ${it.value}")
 				}
 			})
 
@@ -47,6 +47,7 @@ class TestCacaoScreen: CacaoScreen() {
 				stack.rightAnchor equalTo 150
 				purple.centerXAnchor equalTo blue.centerXAnchor
 				purple.centerYAnchor equalTo blue.centerYAnchor
+				purple.widthAnchor equalTo 50
 			}
 
 			layout()

src/main/kotlin/net/shadowfacts/asmr/util/RedstoneMode.kt

@@ -0,0 +1,14 @@
+package net.shadowfacts.asmr.util
+
+/**
+ * @author shadowfacts
+ */
+enum class RedstoneMode {
+	HIGH, LOW, TOGGLE;
+
+	companion object {
+		fun localize(value: RedstoneMode): String {
+			return value.name.toLowerCase().capitalize()
+		}
+	}
+}

src/main/kotlin/net/shadowfacts/cacao/util/RenderHelper.kt

@@ -15,7 +15,7 @@ import net.shadowfacts.cacao.geometry.Rect
  */
 object RenderHelper {
 
-	private val disabled = (System.getProperty("cacao.drawing.disabled") ?: "false").toBoolean()
+	val disabled = (System.getProperty("cacao.drawing.disabled") ?: "false").toBoolean()
 
 	// TODO: find a better place for this
 	fun playSound(event: SoundEvent) {

src/main/kotlin/net/shadowfacts/cacao/view/Label.kt

@@ -5,6 +5,7 @@ import net.minecraft.client.font.TextRenderer
 import net.shadowfacts.cacao.geometry.Point
 import net.shadowfacts.cacao.geometry.Size
 import net.shadowfacts.cacao.util.Color
+import net.shadowfacts.cacao.util.RenderHelper
 
 /**
  * A simple View that displays text. Allows for controlling the color and shadow of the text. Label cannot be used
@@ -29,7 +30,7 @@ class Label(text: String): View() {
 			updateIntrinsicContentSize()
 		}
 
-	var textColor = Color(0x404040)
+	var textColor = Color.WHITE
 
 	override fun wasAdded() {
 		super.wasAdded()
@@ -38,6 +39,8 @@ class Label(text: String): View() {
 	}
 
 	private fun updateIntrinsicContentSize() {
+		if (RenderHelper.disabled) return
+
 		val width = textRenderer.getStringWidth(text)
 		val height = textRenderer.fontHeight
 		intrinsicContentSize = Size(width.toDouble(), height.toDouble())

src/main/kotlin/net/shadowfacts/cacao/view/button/AbstractButton.kt

@@ -126,7 +126,7 @@ abstract class AbstractButton<Impl: AbstractButton<Impl>>(val content: View, val
 			@Suppress("UNCHECKED_CAST")
 			handler(this as Impl)
 
-			if (clickSoundEnabled) {
+			if (clickSoundEnabled && !RenderHelper.disabled) {
 				RenderHelper.playSound(SoundEvents.UI_BUTTON_CLICK)
 			}
 		}

src/main/kotlin/net/shadowfacts/cacao/view/button/EnumButton.kt

@@ -0,0 +1,45 @@
+package net.shadowfacts.cacao.view.button
+
+import net.shadowfacts.cacao.geometry.Point
+import net.shadowfacts.cacao.util.EnumHelper
+import net.shadowfacts.cacao.util.MouseButton
+import net.shadowfacts.cacao.view.Label
+
+/**
+ * A button that cycles through enum values.
+ * Left click: forwards
+ * Right click: backwards
+ * All other mouse buttons call the handler with the unchanged value
+ *
+ * @author shadowfacts
+ * @param initialValue The initial enum value for this button.
+ * @param localizer A function that takes an enum value and converts into a string for the button's label.
+ */
+class EnumButton<E: Enum<E>>(initialValue: E, val localizer: (E) -> String, padding: Double = 4.0): AbstractButton<EnumButton<E>>(Label(localizer(initialValue)), padding) {
+
+	private val label: Label
+		get() = content as Label
+
+	/**
+	 * The current value of the enum button.
+	 * Updating this property will use the [localizer] to update the label.
+	 */
+	var value: E = initialValue
+		set(value) {
+			field = value
+			label.text = localizer(value)
+		}
+
+	override fun mouseClicked(point: Point, mouseButton: MouseButton) {
+		if (!disabled) {
+			value = when (mouseButton) {
+				MouseButton.LEFT -> EnumHelper.next(value)
+				MouseButton.RIGHT -> EnumHelper.previous(value)
+				else -> value
+			}
+		}
+
+		super.mouseClicked(point, mouseButton)
+	}
+
+}

src/test/kotlin/net/shadowfacts/cacao/view/EnumButtonTests.kt

@@ -0,0 +1,95 @@
+package net.shadowfacts.cacao.view
+
+import net.shadowfacts.cacao.Window
+import net.shadowfacts.cacao.geometry.Point
+import net.shadowfacts.cacao.geometry.Rect
+import net.shadowfacts.cacao.util.MouseButton
+import net.shadowfacts.cacao.view.button.EnumButton
+import net.shadowfacts.kiwidsl.dsl
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.BeforeAll
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+
+/**
+ * @author shadowfacts
+ */
+class EnumButtonTests {
+
+	companion object {
+		@BeforeAll
+		@JvmStatic
+		fun setupAll() {
+			System.setProperty("cacao.drawing.disabled", "true")
+		}
+	}
+
+	enum class MyEnum {
+		ONE, TWO, THREE
+	}
+
+	lateinit var window: Window
+
+	@BeforeEach
+	fun setup() {
+		window = Window()
+	}
+
+	@Test
+	fun testCyclesValues() {
+		val values = mutableListOf<MyEnum>()
+		window.addView(EnumButton(MyEnum.ONE, MyEnum::name).apply {
+			frame = Rect(0.0, 0.0, 25.0, 25.0)
+			content.frame = Rect(0.0, 0.0, 25.0, 25.0)
+			handler = {
+				values.add(it.value)
+			}
+		})
+
+		window.mouseClicked(Point(5.0, 5.0), MouseButton.LEFT)
+		assertEquals(1, values.size)
+		assertEquals(MyEnum.TWO, values.last())
+		window.mouseClicked(Point(5.0, 5.0), MouseButton.LEFT)
+		assertEquals(2, values.size)
+		assertEquals(MyEnum.THREE, values.last())
+		window.mouseClicked(Point(5.0, 5.0), MouseButton.LEFT)
+		assertEquals(3, values.size)
+		assertEquals(MyEnum.ONE, values.last())
+	}
+
+	@Test
+	fun testCyclesValuesBackwards() {
+		val values = mutableListOf<MyEnum>()
+		window.addView(EnumButton(MyEnum.ONE, MyEnum::name).apply {
+			frame = Rect(0.0, 0.0, 25.0, 25.0)
+			content.frame = Rect(0.0, 0.0, 25.0, 25.0)
+			handler = {
+				values.add(it.value)
+			}
+		})
+
+		window.mouseClicked(Point(5.0, 5.0), MouseButton.LEFT)
+		assertEquals(1, values.size)
+		assertEquals(MyEnum.TWO, values.last())
+		window.mouseClicked(Point(5.0, 5.0), MouseButton.RIGHT)
+		assertEquals(2, values.size)
+		assertEquals(MyEnum.ONE, values.last())
+	}
+
+	@Test
+	fun testMiddleClickDoesNotChangeValue() {
+		val values = mutableListOf<MyEnum>()
+		window.addView(EnumButton(MyEnum.ONE, MyEnum::name).apply {
+			frame = Rect(0.0, 0.0, 25.0, 25.0)
+			content.frame = Rect(0.0, 0.0, 25.0, 25.0)
+			handler = {
+				values.add(it.value)
+			}
+		})
+
+		window.mouseClicked(Point(5.0, 5.0), MouseButton.MIDDLE)
+		assertEquals(1, values.size)
+		assertEquals(MyEnum.ONE, values.last())
+	}
+
+}