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Create an ItemDecorations file for all RecyclerView item decorations

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All item decorations are now placed in one file so that any `RecyclerView` in the app can use the same ones.
This commit is contained in:
lynxnb 2022-07-09 16:54:26 +02:00 committed by Mark Collins
parent a59f2baa3a
commit 1dfea9ef6f
2 changed files with 49 additions and 28 deletions
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29
app/src/main/java/emu/skyline/MainActivity.kt
View File

@ -7,7 +7,6 @@ package emu.skyline
import android.content.Intent import android.content.Intent
import android.graphics.Color import android.graphics.Color
import android.graphics.Rect
import android.net.Uri import android.net.Uri
import android.os.Bundle import android.os.Bundle
import android.provider.DocumentsContract import android.provider.DocumentsContract
@ -154,39 +153,13 @@ class MainActivity : AppCompatActivity() {
} }
} }
private inner class GridSpacingItemDecoration : RecyclerView.ItemDecoration() {
private val padding = resources.getDimensionPixelSize(R.dimen.grid_padding)
override fun getItemOffsets(outRect : Rect, view : View, parent : RecyclerView, state : RecyclerView.State) {
super.getItemOffsets(outRect, view, parent, state)
val gridLayoutManager = parent.layoutManager as GridLayoutManager
val layoutParams = view.layoutParams as GridLayoutManager.LayoutParams
when (layoutParams.spanIndex) {
0 -> outRect.left = padding
gridLayoutManager.spanCount - 1 -> outRect.right = padding
else -> {
outRect.left = padding / 2
outRect.right = padding / 2
}
}
if (layoutParams.spanSize == gridLayoutManager.spanCount) {
outRect.left = 0
outRect.right = 0
}
}
}
private fun setAppListDecoration() { private fun setAppListDecoration() {
binding.appList.apply { binding.appList.apply {
while (itemDecorationCount > 0) removeItemDecorationAt(0) while (itemDecorationCount > 0) removeItemDecorationAt(0)
when (layoutType) { when (layoutType) {
LayoutType.List -> Unit LayoutType.List -> Unit
LayoutType.Grid, LayoutType.GridCompact -> addItemDecoration(GridSpacingItemDecoration()) LayoutType.Grid, LayoutType.GridCompact -> addItemDecoration(GridSpacingItemDecoration(resources.getDimensionPixelSize(R.dimen.grid_padding)))
} }
} }
} }

48
app/src/main/java/emu/skyline/adapter/ItemDecorations.kt Normal file
View File

@ -0,0 +1,48 @@
/*
* SPDX-License-Identifier: MPL-2.0
* Copyright © 2022 Skyline Team and Contributors (https://github.com/skyline-emu/)
*/
package emu.skyline.adapter
import android.graphics.Rect
import android.view.View
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView
/**
* A [RecyclerView.ItemDecoration] that adds a margin at the bottom of each item
*/
class SpacingItemDecoration(private val padding : Int) : RecyclerView.ItemDecoration() {
override fun getItemOffsets(outRect : Rect, view : View, parent : RecyclerView, state : RecyclerView.State) {
super.getItemOffsets(outRect, view, parent, state)
outRect.set(0, 0, 0, padding)
}
}
/**
* A [RecyclerView.ItemDecoration] that adds a margin to the sides of each item in a grid
*/
class GridSpacingItemDecoration(private val padding : Int) : RecyclerView.ItemDecoration() {
override fun getItemOffsets(outRect : Rect, view : View, parent : RecyclerView, state : RecyclerView.State) {
super.getItemOffsets(outRect, view, parent, state)
val gridLayoutManager = parent.layoutManager as GridLayoutManager
val layoutParams = view.layoutParams as GridLayoutManager.LayoutParams
when (layoutParams.spanIndex) {
0 -> outRect.left = padding
gridLayoutManager.spanCount - 1 -> outRect.right = padding
else -> {
outRect.left = padding / 2
outRect.right = padding / 2
}
}
if (layoutParams.spanSize == gridLayoutManager.spanCount) {
outRect.left = 0
outRect.right = 0
}
}
}