1 files changed, 59 insertions, 0 deletions
diff --git a/src/main/kotlin/moe/nea/firmament/gui/FirmHoverComponent.kt b/src/main/kotlin/moe/nea/firmament/gui/FirmHoverComponent.kt
new file mode 100644
index 0000000..b1792ce
--- /dev/null
+++ b/src/main/kotlin/moe/nea/firmament/gui/FirmHoverComponent.kt
@@ -0,0 +1,59 @@
+package moe.nea.firmament.gui
+
+import io.github.notenoughupdates.moulconfig.gui.GuiComponent
+import io.github.notenoughupdates.moulconfig.gui.GuiImmediateContext
+import io.github.notenoughupdates.moulconfig.gui.KeyboardEvent
+import io.github.notenoughupdates.moulconfig.gui.MouseEvent
+import java.util.function.BiFunction
+import java.util.function.Supplier
+import kotlin.time.Duration
+import moe.nea.firmament.util.TimeMark
+
+class FirmHoverComponent(
+    val child: GuiComponent,
+    val hoverLines: Supplier<List<String>>,
+    val hoverDelay: Duration,
+) : GuiComponent() {
+    override fun getWidth(): Int {
+        return child.width
+    }
+
+    override fun getHeight(): Int {
+        return child.height
+    }
+
+    override fun <T : Any?> foldChildren(
+        initial: T,
+        visitor: BiFunction<GuiComponent, T, T>
+    ): T {
+        return visitor.apply(child, initial)
+    }
+
+    override fun render(context: GuiImmediateContext) {
+        if (context.isHovered && (permaHover || lastMouseMove.passedTime() > hoverDelay)) {
+            context.renderContext.scheduleDrawTooltip(hoverLines.get())
+            permaHover = true
+        } else {
+            permaHover = false
+        }
+        if (!context.isHovered) {
+            lastMouseMove = TimeMark.now()
+        }
+        child.render(context)
+
+    }
+
+    var permaHover = false
+    var lastMouseMove = TimeMark.farPast()
+
+    override fun mouseEvent(mouseEvent: MouseEvent, context: GuiImmediateContext): Boolean {
+        if (mouseEvent is MouseEvent.Move) {
+            lastMouseMove = TimeMark.now()
+        }
+        return child.mouseEvent(mouseEvent, context)
+    }
+
+    override fun keyboardEvent(event: KeyboardEvent, context: GuiImmediateContext): Boolean {
+        return child.keyboardEvent(event, context)
+    }
+}