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fix #250, zoom in to fit the screen on doubleclick

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This commit is contained in:
tibbi 2017-05-24 22:42:30 +02:00
parent 4174769235
commit 128f90d50b
1 changed files with 22 additions and 2 deletions
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24
app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt
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@ -42,6 +42,7 @@ class PhotoFragment : ViewPagerFragment() {
lateinit var view: ViewGroup
private var isFragmentVisible = false
private var wasInit = false
private var RATIO_THRESHOLD = 0.1
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
view = inflater.inflate(R.layout.pager_photo_item, container, false) as ViewGroup
@ -174,7 +175,7 @@ class PhotoFragment : ViewPagerFragment() {
return false
}
override fun onResourceReady(resource: Bitmap?, model: String?, target: Target<Bitmap>?, isFromMemoryCache: Boolean, isFirstResource: Boolean): Boolean {
override fun onResourceReady(resource: Bitmap, model: String?, target: Target<Bitmap>?, isFromMemoryCache: Boolean, isFirstResource: Boolean): Boolean {
if (isFragmentVisible)
addZoomableView()
return false
@ -196,7 +197,6 @@ class PhotoFragment : ViewPagerFragment() {
view.subsampling_view.apply {
maxScale = 10f
beVisible()
setDoubleTapZoomScale(2f)
setImage(ImageSource.uri(medium.path))
orientation = SubsamplingScaleImageView.ORIENTATION_USE_EXIF
setOnImageEventListener(object : SubsamplingScaleImageView.OnImageEventListener {
@ -205,6 +205,7 @@ class PhotoFragment : ViewPagerFragment() {
override fun onReady() {
background = ColorDrawable(if (context.config.darkBackground) Color.BLACK else context.config.backgroundColor)
setDoubleTapZoomScale(getDoubleTapZoomScale())
}
override fun onTileLoadError(e: Exception?) {
@ -227,6 +228,25 @@ class PhotoFragment : ViewPagerFragment() {
}
}
private fun getDoubleTapZoomScale(): Float {
val displayAspectRatio = ViewPagerActivity.screenHeight / (ViewPagerActivity.screenWidth).toFloat()
val bitmapOptions = BitmapFactory.Options()
bitmapOptions.inJustDecodeBounds = true
BitmapFactory.decodeFile(medium.path, bitmapOptions)
val width = bitmapOptions.outWidth
val height = bitmapOptions.outHeight
val bitmapAspectRatio = height / (width).toFloat()
return if (Math.abs(displayAspectRatio - bitmapAspectRatio) < RATIO_THRESHOLD) {
2f
} else if (bitmapAspectRatio > 1f) {
width / (height).toFloat()
} else {
bitmapAspectRatio
}
}
override fun onDestroyView() {
super.onDestroyView()
Glide.clear(view.photo_view)