1 files changed, 61 insertions, 0 deletions
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/layout/AutofitGridLayoutManager.kt b/src/android/app/src/main/java/org/yuzu/yuzu_emu/layout/AutofitGridLayoutManager.kt
new file mode 100644
index 000000000..be5e4c86c
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/layout/AutofitGridLayoutManager.kt
@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.layout
+
+import android.content.Context
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.Recycler
+import org.yuzu.yuzu_emu.R
+
+/**
+ *  Cut down version of the solution provided here
+ *  https://stackoverflow.com/questions/26666143/recyclerview-gridlayoutmanager-how-to-auto-detect-span-count
+ */
+class AutofitGridLayoutManager(
+    context: Context,
+    columnWidth: Int
+) : GridLayoutManager(context, 1) {
+    private var columnWidth = 0
+    private var isColumnWidthChanged = true
+    private var lastWidth = 0
+    private var lastHeight = 0
+
+    init {
+        setColumnWidth(checkedColumnWidth(context, columnWidth))
+    }
+
+    private fun checkedColumnWidth(context: Context, columnWidth: Int): Int {
+        var newColumnWidth = columnWidth
+        if (newColumnWidth <= 0) {
+            newColumnWidth = context.resources.getDimensionPixelSize(R.dimen.spacing_xtralarge)
+        }
+        return newColumnWidth
+    }
+
+    private fun setColumnWidth(newColumnWidth: Int) {
+        if (newColumnWidth > 0 && newColumnWidth != columnWidth) {
+            columnWidth = newColumnWidth
+            isColumnWidthChanged = true
+        }
+    }
+
+    override fun onLayoutChildren(recycler: Recycler, state: RecyclerView.State) {
+        val width = width
+        val height = height
+        if (columnWidth > 0 && width > 0 && height > 0 && (isColumnWidthChanged || lastWidth != width || lastHeight != height)) {
+            val totalSpace: Int = if (orientation == VERTICAL) {
+                width - paddingRight - paddingLeft
+            } else {
+                height - paddingTop - paddingBottom
+            }
+            val spanCount = 1.coerceAtLeast(totalSpace / columnWidth)
+            setSpanCount(spanCount)
+            isColumnWidthChanged = false
+        }
+        lastWidth = width
+        lastHeight = height
+        super.onLayoutChildren(recycler, state)
+    }
+}