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allow closing fullscreen with down gesture, if deep zoomable image is visible

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This commit is contained in:
tibbi 2018-10-22 16:27:56 +02:00
parent 70f5a23575
commit df03f39b94
1 changed files with 36 additions and 0 deletions
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36
app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt
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@ -15,6 +15,7 @@ import android.os.Bundle
import android.os.Handler
import android.util.DisplayMetrics
import android.view.LayoutInflater
import android.view.MotionEvent
import android.view.View
import android.view.ViewGroup
import com.bumptech.glide.Glide
@ -75,6 +76,12 @@ class PhotoFragment : ViewPagerFragment() {
private var storedAllowOneFingerZoom = false
private var storedExtendedDetails = 0
private var mTouchDownX = 0f
private var mTouchDownY = 0f
private var mOriginalSubsamplingScale = 0f
private var mCloseDownThreshold = 100f
private var mIgnoreCloseDown = false
lateinit var view: ViewGroup
lateinit var medium: Medium
@ -99,6 +106,11 @@ class PhotoFragment : ViewPagerFragment() {
}
}
}
subsampling_view.setOnTouchListener { v, event ->
handleEvent(event)
false
}
}
if (ViewPagerActivity.screenWidth == 0 || ViewPagerActivity.screenHeight == 0) {
@ -383,6 +395,7 @@ class PhotoFragment : ViewPagerFragment() {
val useWidth = if (imageOrientation == ORIENTATION_ROTATE_90 || imageOrientation == ORIENTATION_ROTATE_270) sHeight else sWidth
val useHeight = if (imageOrientation == ORIENTATION_ROTATE_90 || imageOrientation == ORIENTATION_ROTATE_270) sWidth else sHeight
setDoubleTapZoomScale(getDoubleTapZoomScale(useWidth, useHeight))
mOriginalSubsamplingScale = scale
}
override fun onTileLoadError(e: Exception?) {
@ -541,6 +554,29 @@ class PhotoFragment : ViewPagerFragment() {
listener?.fragmentClicked()
}
private fun handleEvent(event: MotionEvent) {
if (view.subsampling_view.scale != mOriginalSubsamplingScale) {
return
}
when (event.actionMasked) {
MotionEvent.ACTION_DOWN -> {
mTouchDownX = event.x
mTouchDownY = event.y
}
MotionEvent.ACTION_POINTER_DOWN -> mIgnoreCloseDown = true
MotionEvent.ACTION_UP -> {
val diffX = mTouchDownX - event.x
val diffY = mTouchDownY - event.y
if (!mIgnoreCloseDown && Math.abs(diffY) > Math.abs(diffX) && diffY < -mCloseDownThreshold) {
activity?.supportFinishAfterTransition()
}
mIgnoreCloseDown = false
}
}
}
override fun fullscreenToggled(isFullscreen: Boolean) {
this.isFullscreen = isFullscreen
view.photo_details.apply {