From d402707531e4696ced9724a4cbc1c5d84d0303f5 Mon Sep 17 00:00:00 2001
From: Sawyer Blatz <sdblatz@gmail.com>
Date: Wed, 10 Apr 2019 06:52:49 -0700
Subject: [PATCH] Closes #1420: Moves tab preview to top of page (#1462)

---
 .../mozilla/fenix/home/ImageViewTopCrop.kt    | 21 +++++++++++++++++++
 app/src/main/res/layout/tab_list_row.xml      |  4 ++--
 2 files changed, 23 insertions(+), 2 deletions(-)
 create mode 100644 app/src/main/java/org/mozilla/fenix/home/ImageViewTopCrop.kt

diff --git a/app/src/main/java/org/mozilla/fenix/home/ImageViewTopCrop.kt b/app/src/main/java/org/mozilla/fenix/home/ImageViewTopCrop.kt
new file mode 100644
index 000000000..1ff0ec824
--- /dev/null
+++ b/app/src/main/java/org/mozilla/fenix/home/ImageViewTopCrop.kt
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+   License, v. 2.0. If a copy of the MPL was not distributed with this
+   file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.home
+
+import android.content.Context
+import android.util.AttributeSet
+import androidx.appcompat.widget.AppCompatImageView
+
+class ImageViewTopCrop(context: Context, attrs: AttributeSet) : AppCompatImageView(context, attrs) {
+    override fun setFrame(l: Int, t: Int, r: Int, b: Int): Boolean {
+        val scaleFactor = width / drawable.intrinsicWidth.toFloat()
+        val matrix = imageMatrix
+
+        matrix.setScale(scaleFactor, scaleFactor, 0f, 0f)
+        imageMatrix = matrix
+
+        return super.setFrame(l, t, r, b)
+    }
+}
diff --git a/app/src/main/res/layout/tab_list_row.xml b/app/src/main/res/layout/tab_list_row.xml
index c60b85de0..4b40acdd7 100644
--- a/app/src/main/res/layout/tab_list_row.xml
+++ b/app/src/main/res/layout/tab_list_row.xml
@@ -60,7 +60,7 @@
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintTop_toTopOf="@id/text_url" />
 
-        <ImageView
+        <org.mozilla.fenix.home.ImageViewTopCrop
             android:id="@+id/tab_background"
             android:layout_width="0dp"
             android:layout_height="100dp"
@@ -68,7 +68,7 @@
             android:adjustViewBounds="false"
             android:focusable="false"
             android:importantForAccessibility="no"
-            android:scaleType="centerCrop"
+            android:scaleType="matrix"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"