Add request specific amount dialog to terminal GUI

src/main/kotlin/net/shadowfacts/phycon/network/block/terminal/TerminalScreen.kt

@@ -1,11 +1,15 @@
 package net.shadowfacts.phycon.network.block.terminal
 
-import com.mojang.blaze3d.platform.GlStateManager
+import com.mojang.blaze3d.systems.RenderSystem
+import net.minecraft.client.MinecraftClient
 import net.minecraft.client.gui.DrawableHelper
 import net.minecraft.client.gui.screen.ingame.HandledScreen
+import net.minecraft.client.gui.widget.AbstractButtonWidget
+import net.minecraft.client.gui.widget.ButtonWidget
 import net.minecraft.client.gui.widget.TextFieldWidget
 import net.minecraft.client.util.math.MatrixStack
 import net.minecraft.entity.player.PlayerInventory
+import net.minecraft.item.ItemStack
 import net.minecraft.screen.slot.Slot
 import net.minecraft.screen.slot.SlotActionType
 import net.minecraft.text.LiteralText
@@ -13,6 +17,9 @@ import net.minecraft.text.Text
 import net.minecraft.util.Identifier
 import net.shadowfacts.phycon.PhysicalConnectivity
 import org.lwjgl.glfw.GLFW
+import java.lang.NumberFormatException
+import kotlin.math.ceil
+import kotlin.math.floor
 
 /**
  * @author shadowfacts
@@ -20,10 +27,31 @@ import org.lwjgl.glfw.GLFW
 // todo: translate title
 class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory, title: Text): HandledScreen<TerminalScreenHandler>(handler, playerInv, title) {
 	companion object {
-		val BACKGROUND = Identifier(PhysicalConnectivity.MODID, "textures/gui/terminal.png")
+		private val BACKGROUND = Identifier(PhysicalConnectivity.MODID, "textures/gui/terminal.png")
+		private val DIALOG = Identifier(PhysicalConnectivity.MODID, "textures/gui/terminal_amount.png")
 	}
 
 	private lateinit var searchBox: TextFieldWidget
+	private lateinit var amountBox: TextFieldWidget
+	private var dialogStack = ItemStack.EMPTY
+	private var showingAmountDialog = false
+		set(value) {
+			val oldValue = field
+			field = value
+			for (e in dialogChildren) {
+				e.visible = value
+			}
+			amountBox.isVisible
+			searchBox.setSelected(!value)
+			amountBox.setSelected(value)
+			if (value && !oldValue) {
+				amountBox.text = "1"
+			}
+		}
+	private var dialogChildren = mutableListOf<AbstractButtonWidget>()
+
+	private val dialogWidth = 158
+	private val dialogHeight = 62
 
 	init {
 		backgroundWidth = 252
@@ -33,6 +61,9 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 	override fun init() {
 		super.init()
 
+		children.clear()
+		dialogChildren.clear()
+
 		client!!.keyboard.setRepeatEvents(true)
 
 		searchBox = TextFieldWidget(textRenderer, x + 138, y + 6, 80, 9, LiteralText("Search"))
@@ -43,11 +74,68 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 		searchBox.setSelected(true)
 		searchBox.setEditableColor(0xffffff)
 		children.add(searchBox)
+
+		val dialogMinX = width / 2 - dialogWidth / 2
+		val dialogMinY = height / 2 - dialogHeight / 2
+		amountBox = TextFieldWidget(textRenderer, dialogMinX + 8, dialogMinY + 27, 80, 9, LiteralText("Amount"))
+		amountBox.setHasBorder(false)
+		amountBox.isVisible = false
+		amountBox.setSelected(false)
+		amountBox.setEditableColor(0xffffff)
+		amountBox.setTextPredicate {
+			if (it.isEmpty()) {
+				true
+			} else {
+				try {
+					Integer.parseInt(it) > 0
+				} catch (e: NumberFormatException) {
+					false
+				}
+			}
+		}
+		dialogChildren.add(amountBox)
+
+		val plusOne = SmallButton(dialogMinX + 7, dialogMinY + 7, 28, LiteralText("+1")) {
+			amountBox.intValue += 1
+		}
+		dialogChildren.add(plusOne)
+
+		val plusTen = SmallButton(dialogMinX + 7 + 28 + 3, dialogMinY + 7, 28, LiteralText("+10")) {
+			amountBox.intValue = ceil((amountBox.intValue + 1) / 10.0).toInt() * 10
+		}
+		dialogChildren.add(plusTen)
+
+		val plusHundred = SmallButton(dialogMinX + 7 + (28 + 3) * 2, dialogMinY + 7, 28, LiteralText("+100")) {
+			amountBox.intValue = ceil((amountBox.intValue + 1) / 100.0).toInt() * 100
+		}
+		dialogChildren.add(plusHundred)
+
+		val minusOne = SmallButton(dialogMinX + 7, dialogMinY + 39, 28, LiteralText("-1")) {
+			amountBox.intValue -= 1
+		}
+		dialogChildren.add(minusOne)
+
+		val minusTen = SmallButton(dialogMinX + 7 + 28 + 3, dialogMinY + 39, 28, LiteralText("-10")) {
+			amountBox.intValue = floor((amountBox.intValue - 1) / 10.0).toInt() * 10
+		}
+		dialogChildren.add(minusTen)
+
+		val minusHundred = SmallButton(dialogMinX + 7 + (28 + 3) * 2, dialogMinY + 39, 28, LiteralText("-100")) {
+			amountBox.intValue = floor((amountBox.intValue - 1) / 100.0).toInt() * 100
+		}
+		dialogChildren.add(minusHundred)
+
+		// 101,25
+		val request = ButtonWidget(dialogMinX + 101, dialogMinY + 21, 50, 20, LiteralText("Request")) {
+			doDialogRequest()
+		}
+		dialogChildren.add(request)
 	}
 
 	override fun tick() {
 		super.tick()
 		searchBox.tick()
+		amountBox.tick()
 	}
 
 	override fun drawForeground(matrixStack: MatrixStack, mouseX: Int, mouseY: Int) {
@@ -58,22 +146,51 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 	}
 
 	override fun drawBackground(matrixStack: MatrixStack, delta: Float, mouseX: Int, mouseY: Int) {
+		// if the dialog is open, the background gradient will be drawn in front of the main terminal gui
+		if (!showingAmountDialog) {
 			renderBackground(matrixStack)
+		}
 
-		GlStateManager.color4f(1f, 1f, 1f, 1f)
+		RenderSystem.color4f(1f, 1f, 1f, 1f)
 		client!!.textureManager.bindTexture(BACKGROUND)
 		val x = (width - backgroundWidth) / 2
 		val y = (height - backgroundHeight) / 2
 		drawTexture(matrixStack, x, y, 0, 0, backgroundWidth, backgroundHeight)
 	}
 
+	@ExperimentalUnsignedTypes
 	override fun render(matrixStack: MatrixStack, mouseX: Int, mouseY: Int, delta: Float) {
+		if (showingAmountDialog) {
+			RenderSystem.pushMatrix()
+			// items are rendered at some stupidly high z offset. item amounts at an even higher one
+			RenderSystem.translatef(0f, 0f, -350f)
+
+			// fake the mouse x/y while showing a dialog so slot mouseover highlights aren't drawn
+			super.render(matrixStack, -1, -1, delta)
+
+			RenderSystem.popMatrix()
+		} else {
 			super.render(matrixStack, mouseX, mouseY, delta)
+		}
 
 		searchBox.render(matrixStack, mouseX, mouseY, delta)
 
+		if (showingAmountDialog) {
+			renderBackground(matrixStack)
+
+			RenderSystem.color4f(1f, 1f, 1f, 1f)
+			client!!.textureManager.bindTexture(DIALOG)
+			val dialogMinX = width / 2 - dialogWidth / 2
+			val dialogMinY = height / 2 - dialogHeight / 2
+			drawTexture(matrixStack, dialogMinX, dialogMinY, 0, 0, dialogWidth, dialogHeight)
+
+			for (e in dialogChildren) {
+				e.render(matrixStack, mouseX, mouseY, delta)
+			}
+		} else {
 			drawMouseoverTooltip(matrixStack, mouseX, mouseY)
 		}
+	}
 
 	@ExperimentalUnsignedTypes
 	fun drawSlotUnderlay(matrixStack: MatrixStack, slot: Slot) {
@@ -90,14 +207,67 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 		DrawableHelper.fill(matrixStack, slot.x, slot.y, slot.x + 16, slot.y + 16, color.toInt())
 	}
 
-	override fun onMouseClick(slot: Slot?, i: Int, j: Int, slotActionType: SlotActionType?) {
+	override fun onMouseClick(slot: Slot?, invSlot: Int, clickData: Int, type: SlotActionType?) {
-		super.onMouseClick(slot, i, j, slotActionType)
+		super.onMouseClick(slot, invSlot, clickData, type)
 
 		// don't unfocus the search box on mouse click
 		searchBox.setSelected(true)
+
+		if (type == SlotActionType.PICKUP && clickData == 0 && slot != null && handler.isNetworkSlot(slot.id) && !slot.stack.isEmpty) {
+			dialogStack = slot.stack
+			showingAmountDialog = true
+			searchBox.setSelected(false)
+		}
+	}
+
+	override fun mouseClicked(mouseX: Double, mouseY: Double, button: Int): Boolean {
+		if (showingAmountDialog) {
+			for (e in dialogChildren) {
+				if (e.mouseClicked(mouseX, mouseY, button)) {
+					return true
+				}
+			}
+			return false
+		} else {
+			return super.mouseClicked(mouseX, mouseY, button)
+		}
+	}
+
+	override fun mouseDragged(d: Double, e: Double, i: Int, f: Double, g: Double): Boolean {
+		if (showingAmountDialog) {
+			return false
+		} else {
+			return super.mouseDragged(d, e, i, f, g)
+		}
+	}
+
+	override fun mouseMoved(d: Double, e: Double) {
+		if (showingAmountDialog) {
+		} else {
+			super.mouseMoved(d, e)
+		}
+	}
+
+	override fun mouseReleased(d: Double, e: Double, i: Int): Boolean {
+		if (showingAmountDialog) {
+			return false
+		} else {
+			return super.mouseReleased(d, e, i)
+		}
+	}
+
+	override fun mouseScrolled(d: Double, e: Double, f: Double): Boolean {
+		if (showingAmountDialog) {
+			return false
+		} else {
+			return super.mouseScrolled(d, e, f)
+		}
 	}
 
 	override fun charTyped(c: Char, i: Int): Boolean {
+		if (showingAmountDialog) {
+			return amountBox.charTyped(c, i)
+		} else {
 			val oldText = searchBox.text
 			if (searchBox.charTyped(c, i)) {
 				if (searchBox.text != oldText) {
@@ -108,8 +278,24 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 
 			return super.charTyped(c, i)
 		}
+	}
 
 	override fun keyPressed(key: Int, j: Int, k: Int): Boolean {
+		if (showingAmountDialog) {
+			return when (key) {
+				GLFW.GLFW_KEY_ESCAPE -> {
+					showingAmountDialog = false
+					true
+				}
+				GLFW.GLFW_KEY_ENTER -> {
+					doDialogRequest()
+					true
+				}
+				else -> {
+					amountBox.keyPressed(key, j, k)
+				}
+			}
+		} else {
 			val oldText = searchBox.text
 			if (searchBox.keyPressed(key, j, k)) {
 				if (searchBox.text != oldText) {
@@ -123,9 +309,38 @@ class TerminalScreen(handler: TerminalScreenHandler, playerInv: PlayerInventory,
 				super.keyPressed(key, j, k)
 			}
 		}
+	}
 
 	private fun search() {
 		screenHandler.search(searchBox.text)
 	}
 
+	private fun doDialogRequest() {
+		showingAmountDialog = false
+		handler.requestItem(client!!.player!!, dialogStack, amountBox.intValue)
+	}
+
+	private var TextFieldWidget.intValue: Int
+		get() = if (text.isEmpty()) 0 else Integer.parseInt(text)
+		set(value) {
+			text = value.toString()
+			setSelected(true)
+		}
+
+	class SmallButton(x: Int, y: Int, width: Int, title: Text, action: PressAction): ButtonWidget(x, y, width, 14, title, action) {
+		@ExperimentalUnsignedTypes
+		override fun renderButton(matrixStack: MatrixStack, mouseX: Int, mouseY: Int, delta: Float) {
+			val client = MinecraftClient.getInstance()
+			client.textureManager.bindTexture(DIALOG)
+			RenderSystem.color4f(1f, 1f, 1f, 1f)
+			val v = if (isHovered) 142 else 128
+			RenderSystem.enableBlend()
+			RenderSystem.defaultBlendFunc()
+			RenderSystem.enableDepthTest()
+			drawTexture(matrixStack, x, y, 0, v, width / 2, height)
+			drawTexture(matrixStack, x + width / 2, y, 200 - width / 2, v, width / 2, height)
+			drawCenteredText(matrixStack, client.textRenderer, message, x + width / 2, y + (height - 8) / 2, 0xffffffffu.toInt())
+		}
+	}
+
 }

src/main/kotlin/net/shadowfacts/phycon/network/block/terminal/TerminalScreenHandler.kt

@@ -134,7 +134,7 @@ class TerminalScreenHandler(syncId: Int, playerInv: PlayerInventory, val termina
 		return super.onSlotClick(slotId, clickData, actionType, player)
 	}
 
-	private fun requestItem(player: PlayerEntity, stack: ItemStack, amount: Int) {
+	fun requestItem(player: PlayerEntity, stack: ItemStack, amount: Int) {
 		if (!player.world.isClient) return
 		val handler = (player as ClientPlayerEntity).networkHandler
 		val packet = C2STerminalRequestItem(terminal, stack, amount)