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allow only pinch zooming, not double tap

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This commit is contained in:
tibbi 2016-12-26 19:09:07 +01:00
parent 74dd400731
commit 727bd490d3
1 changed files with 5 additions and 0 deletions
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5
app/src/main/kotlin/com/simplemobiletools/gallery/views/MyScalableRecyclerView.kt
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@ -12,6 +12,7 @@ class MyScalableRecyclerView : RecyclerView {
companion object {
var mListener: ZoomListener? = null
var mCurrScaleFactor = 1.0f
var mLastUp = 0L // allow only pinch zoom, not double tap
}
constructor(context: Context) : super(context) {
@ -28,6 +29,7 @@ class MyScalableRecyclerView : RecyclerView {
super.dispatchTouchEvent(ev)
if (ev.action == MotionEvent.ACTION_UP) {
mCurrScaleFactor = 1.0f
mLastUp = System.currentTimeMillis()
}
return mScaleDetector.onTouchEvent(ev)
@ -38,6 +40,9 @@ class MyScalableRecyclerView : RecyclerView {
val ZOOM_OUT_THRESHOLD = 0.3f
override fun onScale(detector: ScaleGestureDetector): Boolean {
if (System.currentTimeMillis() - mLastUp < 1000)
return false
val diff = mCurrScaleFactor - detector.scaleFactor
if (diff < ZOOM_IN_THRESHOLD && mCurrScaleFactor == 1.0f) {
mListener?.zoomIn()