Kotlinize some widgets

2016-03-08 01:22:56 +01:00
parent 0ddbfd1036
commit 05adde552d
12 changed files with 142 additions and 210 deletions
@@ -0,0 +1,45 @@
+package eu.kanade.tachiyomi.widget
+
+import android.content.Context
+import android.support.v7.widget.GridLayoutManager
+import android.support.v7.widget.RecyclerView
+import android.util.AttributeSet
+
+class AutofitRecyclerView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
+        RecyclerView(context, attrs) {
+
+    private val manager = GridLayoutManager(context, 1)
+
+    private var columnWidth = -1
+
+    var spanCount = 0
+        set(value) {
+            field = value
+            if (value > 0) {
+                manager.spanCount = value
+            }
+        }
+
+    val itemWidth: Int
+        get() = measuredWidth / manager.spanCount
+
+    init {
+        if (attrs != null) {
+            val attrsArray = intArrayOf(android.R.attr.columnWidth)
+            val array = context.obtainStyledAttributes(attrs, attrsArray)
+            columnWidth = array.getDimensionPixelSize(0, -1)
+            array.recycle()
+        }
+
+        layoutManager = manager
+    }
+
+    override fun onMeasure(widthSpec: Int, heightSpec: Int) {
+        super.onMeasure(widthSpec, heightSpec)
+        if (spanCount == 0 && columnWidth > 0) {
+            val spanCount = Math.max(1, measuredWidth / columnWidth)
+            manager.spanCount = spanCount
+        }
+    }
+
+}