davidoskky/ReaderForSelfoss-multiplatform
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Add checkerboard background to the images in the image view

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A checkerboard is drawn beneath the image in the imageview to allow
a simpler viewing of images with transparency
This commit is contained in:
davidoskky 2022-11-03 23:16:48 +01:00
parent b02a588dff
commit c09a32e9ad
2 changed files with 20 additions and 9 deletions
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22
androidApp/src/main/java/bou/amine/apps/readerforselfossv2/android/fragments/ImageFragment.kt
View File

@ -1,21 +1,23 @@
package bou.amine.apps.readerforselfossv2.android.fragments package bou.amine.apps.readerforselfossv2.android.fragments
import android.graphics.drawable.Drawable
import android.graphics.drawable.LayerDrawable
import android.os.Bundle import android.os.Bundle
import android.view.LayoutInflater import android.view.LayoutInflater
import android.view.View import android.view.View
import android.view.ViewGroup import android.view.ViewGroup
import androidx.fragment.app.Fragment import androidx.fragment.app.Fragment
import bou.amine.apps.readerforselfossv2.android.R
import bou.amine.apps.readerforselfossv2.android.databinding.FragmentImageBinding import bou.amine.apps.readerforselfossv2.android.databinding.FragmentImageBinding
import com.bumptech.glide.Glide import com.bumptech.glide.Glide
import com.bumptech.glide.load.engine.DiskCacheStrategy import com.bumptech.glide.request.target.ImageViewTarget
import com.bumptech.glide.request.RequestOptions
class ImageFragment : Fragment() { class ImageFragment : Fragment() {
private lateinit var imageUrl : String private lateinit var imageUrl : String
private val glideOptions = RequestOptions.diskCacheStrategyOf(DiskCacheStrategy.ALL)
private var _binding: FragmentImageBinding? = null private var _binding: FragmentImageBinding? = null
private val binding get() = _binding private val binding get() = _binding
private lateinit var layers: LayerDrawable
override fun onCreate(savedInstanceState: Bundle?) { override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState) super.onCreate(savedInstanceState)
@ -29,10 +31,18 @@ class ImageFragment : Fragment() {
binding!!.photoView.visibility = View.VISIBLE binding!!.photoView.visibility = View.VISIBLE
Glide.with(activity) Glide.with(activity)
.asBitmap()
.apply(glideOptions)
.load(imageUrl) .load(imageUrl)
.into(binding!!.photoView) .into(object : ImageViewTarget<Drawable>(binding!!.photoView) {
override fun setResource(resource: Drawable?) {
val background = resources.getDrawable(R.drawable.checkerboard, context?.theme)
layers = LayerDrawable(arrayOf(background, resource))
binding!!.photoView.setImageDrawable(layers)
}
override fun onLoadCleared(placeholder: Drawable?) {
layers = LayerDrawable(emptyArray())
}
})
return view return view
} }

7
androidApp/src/main/res/layout/fragment_image.xml
View File

@ -1,5 +1,5 @@
<?xml version="1.0" encoding="utf-8"?> <?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="match_parent"> android:layout_height="match_parent">
@ -9,7 +9,8 @@
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="match_parent" android:layout_height="match_parent"
android:layout_centerVertical="true" android:layout_centerVertical="true"
android:layout_centerHorizontal="true" android:adjustViewBounds="true"
android:background="?attr/colorOnBackground"
app:srcCompat="@android:drawable/screen_background_dark" /> app:srcCompat="@android:drawable/screen_background_dark" />
</androidx.coordinatorlayout.widget.CoordinatorLayout> </RelativeLayout>