Prevent panning before quick scale

app/src/main/java/se/ajpanton/notificationlog/ZoomImageView.kt

@@ -27,6 +27,7 @@ class ZoomImageView @JvmOverloads constructor(
     private var lastFocusX = 0f
     private var lastFocusY = 0f
     private var pointerCount = 0
+    private var quickScaleGesture = false
     private val scaleDetector = ScaleGestureDetector(context, object : ScaleGestureDetector.SimpleOnScaleGestureListener() {
         override fun onScaleBegin(detector: ScaleGestureDetector): Boolean {
             lastFocusX = detector.focusX
@@ -54,6 +55,18 @@ class ZoomImageView @JvmOverloads constructor(
             return true
         }
 
+        override fun onDoubleTap(event: MotionEvent): Boolean {
+            quickScaleGesture = true
+            return true
+        }
+
+        override fun onDoubleTapEvent(event: MotionEvent): Boolean {
+            if (event.actionMasked == MotionEvent.ACTION_UP || event.actionMasked == MotionEvent.ACTION_CANCEL) {
+                quickScaleGesture = false
+            }
+            return true
+        }
+
     })
 
     init {
@@ -81,7 +94,7 @@ class ZoomImageView @JvmOverloads constructor(
                 lastY = event.y
                 dragging = false
             }
-            MotionEvent.ACTION_MOVE -> if (event.pointerCount == 1 && !scaleDetector.isInProgress) {
+            MotionEvent.ACTION_MOVE -> if (event.pointerCount == 1 && !scaleDetector.isInProgress && !quickScaleGesture) {
                 val dx = event.x - lastX
                 val dy = event.y - lastY
                 if (dx != 0f || dy != 0f) {