dithered skybox

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

@@ -0,0 +1,83 @@
+package net.torvald.terrarum.ui
+
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.g2d.SpriteBatch
+import com.badlogic.gdx.graphics.g2d.TextureRegion
+import net.torvald.terrarum.BlendMode
+import net.torvald.terrarum.blendNormal
+import net.torvald.terrarum.fillRect
+
+/**
+ * Created by minjaesong on 2017-07-16.
+ */
+class UIItemImageButton(
+        parent: UICanvas,
+        val image: TextureRegion,
+
+        val buttonCol: Color = Color.WHITE,
+        val buttonBackCol: Color = Color(0),
+        val buttonBackBlendMode: String = BlendMode.NORMAL,
+
+        val activeCol: Color = Color(0x00f8ff_ff),
+        val activeBackCol: Color = Color(0xb0b0b0_ff.toInt()),
+        val activeBackBlendMode: String = BlendMode.MULTIPLY,
+
+        override var posX: Int,
+        override var posY: Int,
+        override val width: Int,
+        override val height: Int
+) : UIItem(parent) {
+
+    override fun update(delta: Float) {
+    }
+
+    override fun render(batch: SpriteBatch) {
+        if (mouseUp) {
+            BlendMode.resolve(activeBackBlendMode)
+            batch.color = activeBackCol
+        }
+        else {
+            BlendMode.resolve(buttonBackBlendMode)
+            batch.color = buttonBackCol
+        }
+
+        batch.fillRect(posX.toFloat(), posY.toFloat(), width.toFloat(), height.toFloat())
+
+        blendNormal()
+
+        batch.color = if (mouseUp) activeCol else buttonCol
+        batch.draw(image, (posX - (image.regionWidth / 2)).toFloat(), (posY - (image.regionHeight / 2)).toFloat())
+    }
+
+    override fun dispose() {
+        image.texture.dispose()
+    }
+
+    override fun keyDown(keycode: Int): Boolean {
+        return false
+    }
+
+    override fun keyUp(keycode: Int): Boolean {
+        return false
+    }
+
+    override fun mouseMoved(screenX: Int, screenY: Int): Boolean {
+        return false
+    }
+
+    override fun touchDragged(screenX: Int, screenY: Int, pointer: Int): Boolean {
+        return false
+    }
+
+    override fun touchDown(screenX: Int, screenY: Int, pointer: Int, button: Int): Boolean {
+        return false
+    }
+
+    override fun touchUp(screenX: Int, screenY: Int, pointer: Int, button: Int): Boolean {
+        return false
+    }
+
+    override fun scrolled(amount: Int): Boolean {
+        return false
+    }
+}