working text selector; text input needs more work

src/net/torvald/terrarum/ui/UIItemTextSelector.kt

@@ -0,0 +1,158 @@
+package net.torvald.terrarum.ui
+
+import com.badlogic.gdx.graphics.Camera
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.OrthographicCamera
+import com.badlogic.gdx.graphics.Pixmap
+import com.badlogic.gdx.graphics.g2d.SpriteBatch
+import com.badlogic.gdx.graphics.glutils.FrameBuffer
+import net.torvald.terrarum.*
+import net.torvald.terrarum.gameworld.fmod
+import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
+
+/**
+ * @param width width of the text input where the text gets drawn, not the entire item
+ * @param height height of the text input where the text gets drawn, not the entire item
+ *
+ * Created by minjaesong on 2021-10-21.
+ */
+class UIItemTextSelector(
+        parentUI: UICanvas,
+        initialX: Int, initialY: Int,
+        val labelfuns: List<() -> String>,
+        intialSelection: Int,
+        override val width: Int,
+        private val drawBorder: Boolean = true
+) : UIItem(parentUI, initialX, initialY) {
+
+    init {
+        CommonResourcePool.addToLoadingList("inventory_category") {
+            TextureRegionPack("assets/graphics/gui/inventory/category.tga", 20, 20)
+        }
+        CommonResourcePool.loadAll()
+    }
+
+    private val labels = CommonResourcePool.getAsTextureRegionPack("inventory_category")
+
+    override val height = 24
+    private val buttonW = 30
+
+    private val fbo = FrameBuffer(Pixmap.Format.RGBA8888, width - 54 - 4, height - 4, true)
+
+    var selection = intialSelection
+    private var fboUpdateLatch = true
+
+    private var mouseOnButton = 0 // 0: nothing, 1: left, 2: right
+
+    var selectionChangeListener: (Int) -> Unit = {}
+
+    override fun update(delta: Float) {
+        super.update(delta)
+
+        mouseOnButton =
+                if (relativeMouseX in 0..buttonW && relativeMouseY in 0..height)
+                    1
+                else if (relativeMouseX in width - buttonW..width && relativeMouseY in 0..height)
+                    2
+                else
+                    0
+
+        if (!mouseLatched && Terrarum.mouseDown && mouseOnButton != 0) {
+            mouseLatched = true
+            selection = (selection + (mouseOnButton * 2) - 3) fmod labelfuns.size
+            fboUpdateLatch = true
+            selectionChangeListener(selection)
+        }
+        else if (!Terrarum.mouseDown) mouseLatched = false
+    }
+
+    override fun render(batch: SpriteBatch, camera: Camera) {
+
+        batch.end()
+
+        if (fboUpdateLatch) {
+            fboUpdateLatch = false
+            fbo.inAction(camera as OrthographicCamera, batch) { batch.inUse {
+                gdxClearAndSetBlend(0f, 0f, 0f, 0f)
+
+                it.color = Color.WHITE
+                val t = labelfuns[selection]()
+                val tw = App.fontGame.getWidth(t)
+                App.fontGameFBO.draw(it, t, (fbo.width - tw) / 2, 0)
+            } }
+        }
+
+        batch.begin()
+
+        if (drawBorder) {
+            batch.color = UIItemTextLineInput.TEXTINPUT_COL_BACKGROUND
+            // left button cell back
+            Toolkit.fillArea(batch, posX, posY, buttonW, height)
+            // text area cell back
+            Toolkit.fillArea(batch, posX + buttonW + 3, posY, width - 2*buttonW - 6, height)
+            // right button cell back
+            Toolkit.fillArea(batch, posX + width - buttonW, posY, buttonW, height)
+
+            // text area border
+            batch.color = Toolkit.Theme.COL_INACTIVE
+            Toolkit.drawBoxBorder(batch, posX + buttonW + 2, posY - 1, width - 2*buttonW - 6 + 2, height + 2)
+
+            // left button border
+            batch.color = if (mouseOnButton == 1 && mousePushed) Toolkit.Theme.COL_HIGHLIGHT
+            else if (mouseOnButton == 1) Toolkit.Theme.COL_ACTIVE else Toolkit.Theme.COL_INACTIVE
+            Toolkit.drawBoxBorder(batch, posX - 1, posY - 1, buttonW + 2, height + 2)
+
+            // right button border
+            batch.color = if (mouseOnButton == 2 && mousePushed) Toolkit.Theme.COL_HIGHLIGHT
+            else if (mouseOnButton == 2) Toolkit.Theme.COL_ACTIVE else Toolkit.Theme.COL_INACTIVE
+            Toolkit.drawBoxBorder(batch, posX + width - buttonW - 1, posY - 1, buttonW + 2, height + 2)
+        }
+
+        // left button icon
+        batch.color = if (mouseOnButton == 1 && mousePushed) Toolkit.Theme.COL_HIGHLIGHT
+        else if (mouseOnButton == 1) Toolkit.Theme.COL_ACTIVE else UIItemTextLineInput.TEXTINPUT_COL_TEXT
+        batch.draw(labels.get(16,0), posX + (buttonW - labels.tileW) / 2f, posY + (height - labels.tileH) / 2f)
+
+        // right button icon
+        batch.color = if (mouseOnButton == 2 && mousePushed) Toolkit.Theme.COL_HIGHLIGHT
+        else if (mouseOnButton == 2) Toolkit.Theme.COL_ACTIVE else UIItemTextLineInput.TEXTINPUT_COL_TEXT
+        batch.draw(labels.get(17,0), posX + width - buttonW + (buttonW - labels.tileW) / 2f, posY + (height - labels.tileH) / 2f)
+
+        // draw text
+        batch.color = UIItemTextLineInput.TEXTINPUT_COL_TEXT
+        batch.draw(fbo.colorBufferTexture, posX + buttonW + 5f, posY + 2f, fbo.width.toFloat(), fbo.height.toFloat())
+
+
+        super.render(batch, camera)
+    }
+
+    override fun dispose() {
+        fbo.dispose()
+    }
+}
+
+class UIItemSpinner(
+        parentUI: UICanvas,
+        initialX: Int, initialY: Int,
+        intialValue: Int,
+        val min: Int,
+        val max: Int,
+        val step: Int,
+        override val width: Int
+) : UIItem(parentUI, initialX, initialY) {
+
+    init {
+        CommonResourcePool.addToLoadingList("inventory_category") {
+            TextureRegionPack("assets/graphics/gui/inventory/category.tga", 20, 20)
+        }
+        CommonResourcePool.loadAll()
+    }
+
+    private val labels = CommonResourcePool.getAsTextureRegionPack("inventory_category")
+
+    override val height = 24
+
+    override fun dispose() {
+
+    }
+}