Add Label

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

@@ -6,6 +6,7 @@ import net.shadowfacts.shadowui.View
 import net.shadowfacts.shadowui.Window
 import net.shadowfacts.shadowui.geometry.Size
 import net.shadowfacts.shadowui.util.Color
+import net.shadowfacts.shadowui.view.Label
 
 class TestScreen: Screen() {
 
@@ -24,6 +25,9 @@ class TestScreen: Screen() {
 				backgroundColor = Color(0x800080)
 			})
 			purple.intrinsicContentSize = Size(width = 150.0, height = 150.0)
+			val label = purple.addSubview(Label("Hello, world!").apply {
+				textColor = Color.WHITE
+			})
 
 			solver.dsl {
 				red.leftAnchor equalTo 0
@@ -45,6 +49,9 @@ class TestScreen: Screen() {
 //				purple.heightAnchor equalTo 100
 				purple.centerXAnchor equalTo green.centerXAnchor
 				purple.centerYAnchor equalTo green.centerYAnchor
+
+				label.centerXAnchor equalTo purple.centerXAnchor
+				label.centerYAnchor equalTo  purple.centerYAnchor
 			}
 
 			layout()

src/main/kotlin/net/shadowfacts/shadowui/View.kt

@@ -9,7 +9,7 @@ import net.shadowfacts.shadowui.util.RenderHelper
 import no.birkett.kiwi.Constraint
 import no.birkett.kiwi.Solver
 
-class View {
+open class View {
 
 	lateinit var solver: Solver
 
@@ -36,7 +36,7 @@ class View {
 	private var intrinsicContentSizeWidthConstraint: Constraint? = null
 	private var intrinsicContentSizeHeightConstraint: Constraint? = null
 
-	var backgroundColor = Color(0xff0000)
+	var backgroundColor = Color.CLEAR
 
 	var parent: View? = null
 	val subviews = mutableListOf<View>()
@@ -51,11 +51,11 @@ class View {
 		return view
 	}
 
-	fun wasAdded() {
+	open fun wasAdded() {
 		createInternalConstraints()
 	}
 
-	fun createInternalConstraints() {
+	open fun createInternalConstraints() {
 		solver.dsl {
 			rightAnchor equalTo (leftAnchor + widthAnchor)
 			bottomAnchor equalTo (topAnchor + heightAnchor)
@@ -77,7 +77,7 @@ class View {
 		}
 	}
 
-	fun didLayout() {
+	open fun didLayout() {
 		subviews.forEach(View::didLayout)
 
 		val parentLeft = parent?.leftAnchor?.value ?: 0.0
@@ -99,6 +99,6 @@ class View {
 		GlStateManager.popMatrix()
 	}
 
-	fun drawContent() {}
+	open fun drawContent() {}
 
 }

src/main/kotlin/net/shadowfacts/shadowui/util/Color.kt

@@ -7,4 +7,10 @@ data class Color(val red: Int, val green: Int, val blue: Int, val alpha: Int = 2
 	val argb: Int
 		get() = ((alpha and 255) shl 24) or ((red and 255) shl 16) or ((green and 255) shl 8) or (blue and 255)
 
+	companion object {
+		val CLEAR = Color(0, alpha = 0)
+		val WHITE = Color(0xffffff)
+		val BLACK = Color(0)
+	}
+
 }

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

@@ -0,0 +1,40 @@
+package net.shadowfacts.shadowui.view
+
+import net.minecraft.client.MinecraftClient
+import net.minecraft.client.font.TextRenderer
+import net.shadowfacts.shadowui.View
+import net.shadowfacts.shadowui.geometry.Size
+import net.shadowfacts.shadowui.util.Color
+
+class Label(text: String): View() {
+
+	companion object {
+		val textRenderer: TextRenderer
+			get() = MinecraftClient.getInstance().textRenderer
+	}
+
+	var text: String = text
+		set(value) {
+			field = value
+			updateIntrinsicContentSize()
+		}
+
+	var textColor = Color(0x404040)
+
+	override fun wasAdded() {
+		super.wasAdded()
+
+		updateIntrinsicContentSize()
+	}
+
+	private fun updateIntrinsicContentSize() {
+		val width = textRenderer.getStringWidth(text)
+		val height = textRenderer.fontHeight
+		intrinsicContentSize = Size(width.toDouble(), height.toDouble())
+	}
+
+	override fun drawContent() {
+		textRenderer.draw(text, 0f, 0f, textColor.argb)
+	}
+
+}