Implement OSC per-button scale functionality

app/src/main/java/emu/skyline/input/onscreen/OnScreenButton.kt

@@ -7,6 +7,7 @@ package emu.skyline.input.onscreen
 
 import android.graphics.Canvas
 import android.graphics.Paint
+import android.graphics.PointF
 import android.graphics.Rect
 import android.graphics.Typeface
 import android.graphics.drawable.Drawable
@@ -48,8 +49,8 @@ abstract class OnScreenButton(
 
     var relativeX = config.relativeX
     var relativeY = config.relativeY
-    private val relativeWidth get() = defaultRelativeWidth * config.globalScale
+    private val relativeWidth get() = defaultRelativeWidth * (config.globalScale + config.scale)
-    private val relativeHeight get() = defaultRelativeHeight * config.globalScale
+    private val relativeHeight get() = defaultRelativeHeight * (config.globalScale + config.scale)
 
     /**
      * The width of the view this button is in, populated by the view during draw
@@ -98,6 +99,16 @@ abstract class OnScreenButton(
      */
     protected var editInfo = onScreenControllerView.editInfo
 
+    /**
+     * The touch point when the edit session started
+     */
+    protected var editInitialTouchPoint = PointF()
+
+    /**
+     * The scale of the button when the edit session started
+     */
+    private var editInitialScale = 0f
+
     protected open fun renderCenteredText(canvas : Canvas, text : String, size : Float, x : Float, y : Float, alpha : Int) {
         buttonSymbolPaint.apply {
             textSize = size
@@ -152,11 +163,14 @@ abstract class OnScreenButton(
      * @param y The y coordinate of the initial touch
      */
     open fun startEdit(x : Float, y : Float) {
+        editInitialTouchPoint.set(x, y)
+        editInitialScale = config.scale
     }
 
     open fun edit(x : Float, y : Float) {
         when (editInfo.editMode) {
             EditMode.Move -> move(x, y)
+            EditMode.Resize -> resize(x, y)
             else -> return
         }
     }
@@ -169,6 +183,15 @@ abstract class OnScreenButton(
         relativeY = (y - heightDiff) / adjustedHeight
     }
 
+    /**
+     * Resizes this button based on the distance of the given Y coordinate from the initial Y coordinate
+     */
+    open fun resize(x : Float, y : Float) {
+        // Invert the distance because the Y coordinate increases as you move down the screen
+        val verticalDistance = editInitialTouchPoint.y - y
+        config.scale = editInitialScale + verticalDistance / 200f
+    }
+
     /**
      * Ends the current edit session
      */
@@ -188,5 +211,6 @@ abstract class OnScreenButton(
     open fun resetConfig() {
         resetRelativeValues()
         config.enabled = true
+        config.scale = 0f
     }
 }

app/src/main/java/emu/skyline/input/onscreen/OnScreenConfiguration.kt

@@ -13,11 +13,23 @@ import emu.skyline.utils.sharedPreferences
 class OnScreenConfiguration(private val context : Context, private val buttonId : ButtonId, defaultRelativeX : Float, defaultRelativeY : Float) {
     private inline fun <reified T> config(default : T, prefix : String = "${buttonId.name}_") = sharedPreferences(context, default, prefix, "controller_config")
 
+    var enabled by config(true)
+
     var alpha by config(155, "")
     var textColor by config(SwitchColors.BLACK.color)
     var backgroundColor by config(SwitchColors.WHITE.color)
-    var enabled by config(true)
+
+    /**
+     * The global scale applied to all buttons
+     */
     var globalScale by config(1.15f, "")
+
+    /**
+     * The scale of each button, this is added to the global scale
+     * Allows buttons to have their own size, while still be controlled by the global scale
+     */
+    var scale by config(0.0f)
+
     var relativeX by config(defaultRelativeX)
     var relativeY by config(defaultRelativeY)
 }

app/src/main/java/emu/skyline/input/onscreen/OnScreenEditActivity.kt

@@ -58,6 +58,11 @@ class OnScreenEditActivity : AppCompatActivity() {
         toggleFabVisibility(false)
     }
 
+    private val resizeAction = {
+        binding.onScreenControllerView.setEditMode(EditMode.Resize)
+        toggleFabVisibility(false)
+    }
+
     private val toggleAction : () -> Unit = {
         val buttonProps = binding.onScreenControllerView.getButtonProps()
         val checkedButtonsArray = buttonProps.map { it.enabled }.toBooleanArray()
@@ -107,7 +112,8 @@ class OnScreenEditActivity : AppCompatActivity() {
         Pair(R.drawable.ic_palette, paletteAction),
         Pair(R.drawable.ic_restore) { binding.onScreenControllerView.resetControls() },
         Pair(R.drawable.ic_toggle, toggleAction),
-        Pair(R.drawable.ic_edit, moveAction),
+        Pair(R.drawable.ic_move, moveAction),
+        Pair(R.drawable.ic_resize, resizeAction),
         Pair(R.drawable.ic_zoom_out) { binding.onScreenControllerView.decreaseScale() },
         Pair(R.drawable.ic_zoom_in) { binding.onScreenControllerView.increaseScale() },
         Pair(R.drawable.ic_opacity_minus) { binding.onScreenControllerView.decreaseOpacity() },

app/src/main/java/emu/skyline/input/onscreen/OnScreenEditInfo.kt

@@ -8,6 +8,7 @@ package emu.skyline.input.onscreen
 enum class EditMode {
     None,
     Move,
+    Resize
 }
 
 /**

app/src/main/res/drawable/ic_move.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="#000000"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M10,9h4L14,6h3l-5,-5 -5,5h3v3zM9,10L6,10L6,7l-5,5 5,5v-3h3v-4zM23,12l-5,-5v3h-3v4h3v3l5,-5zM14,15h-4v3L7,18l5,5 5,-5h-3v-3z" />
+</vector>

app/src/main/res/drawable/ic_resize.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="#000000"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M21,11l0,-8l-8,0l3.29,3.29l-10,10l-3.29,-3.29l0,8l8,0l-3.29,-3.29l10,-10z" />
+</vector>