1 files changed, 47 insertions, 0 deletions
diff --git a/src/com/android/launcher3/util/IconSizeSteps.kt b/src/com/android/launcher3/util/IconSizeSteps.kt
new file mode 100644
index 0000000000..2a5afe0ce2
--- /dev/null
+++ b/src/com/android/launcher3/util/IconSizeSteps.kt
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.util
+
+import android.content.res.Resources
+import androidx.core.content.res.getDimensionOrThrow
+import androidx.core.content.res.use
+import com.android.launcher3.R
+import kotlin.math.max
+
+class IconSizeSteps(res: Resources) {
+    private val steps: List<Int>
+
+    init {
+        steps =
+            res.obtainTypedArray(R.array.icon_size_steps).use {
+                (0 until it.length()).map { step -> it.getDimensionOrThrow(step).toInt() }.sorted()
+            }
+    }
+
+    fun minimumIconSize(): Int = steps[0]
+
+    fun getNextLowerIconSize(iconSizePx: Int): Int {
+        return steps[max(0, getIndexForIconSize(iconSizePx) - 1)]
+    }
+
+    fun getIconSmallerThan(cellWidth: Int): Int {
+        return steps.lastOrNull { it <= cellWidth } ?: steps[0]
+    }
+
+    private fun getIndexForIconSize(iconSizePx: Int): Int {
+        return max(0, steps.indexOfFirst { iconSizePx <= it })
+    }
+}