Remove corner adjustment from MaterialButton and ExtendedFloatingActionButton.

ExtendedFloatingActionButton extends from MaterialButton so removing MaterialButton's corner size adjustment removes the adjustment from ExtendedFloatingActionButton, as well.

PiperOrigin-RevId: 268282804
(cherry picked from commit ca2db83)

Author: ymarian

lib/java/com/google/android/material/button/CornerAdjustmentFlag.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2019 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.google.android.material.button;
+
+import android.content.Context;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * A class to control whether corner adjustment is enable or not.
+ */
+class CornerAdjustmentFlag {
+
+  private CornerAdjustmentFlag() {}
+
+  static boolean isEnabled(Context context) {
+    return false;
+  }
+}

lib/java/com/google/android/material/button/MaterialButtonHelper.java

@@ -20,6 +20,7 @@
 
 import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP;
 
+import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
 import android.graphics.Color;
@@ -70,10 +71,12 @@ class MaterialButtonHelper {
   private boolean cornerRadiusSet = false;
   private boolean checkable;
   private LayerDrawable rippleDrawable;
+  private boolean cornerAdjustmentEnabled;
 
   MaterialButtonHelper(MaterialButton button, @NonNull ShapeAppearanceModel shapeAppearanceModel) {
     materialButton = button;
     this.shapeAppearanceModel = shapeAppearanceModel;
+    cornerAdjustmentEnabled = CornerAdjustmentFlag.isEnabled(button.getContext());
   }
 
   void loadFromAttributes(@NonNull TypedArray attributes) {
@@ -192,7 +195,8 @@ void setShouldDrawSurfaceColorStroke(boolean shouldDrawSurfaceColorStroke) {
    */
   private Drawable createBackground() {
     MaterialShapeDrawable backgroundDrawable = new MaterialShapeDrawable(shapeAppearanceModel);
-    backgroundDrawable.initializeElevationOverlay(materialButton.getContext());
+    Context context = materialButton.getContext();
+    backgroundDrawable.initializeElevationOverlay(context);
     DrawableCompat.setTintList(backgroundDrawable, backgroundTint);
     if (backgroundTintMode != null) {
       DrawableCompat.setTintMode(backgroundDrawable, backgroundTintMode);
@@ -210,7 +214,7 @@ private Drawable createBackground() {
 
     if (IS_LOLLIPOP) {
       maskDrawable = new MaterialShapeDrawable(shapeAppearanceModel);
-      if (strokeWidth > 0) {
+      if (strokeWidth > 0 && cornerAdjustmentEnabled) {
         ShapeAppearanceModel adjustedShapeAppearanceModel =
             adjustShapeAppearanceModelCornerRadius(shapeAppearanceModel, strokeWidth / 2f);
         backgroundDrawable.setShapeAppearanceModel(adjustedShapeAppearanceModel);
@@ -304,7 +308,7 @@ private void updateStroke() {
                 ? MaterialColors.getColor(materialButton, R.attr.colorSurface)
                 : Color.TRANSPARENT);
       }
-      if (IS_LOLLIPOP) {
+      if (IS_LOLLIPOP && cornerAdjustmentEnabled) {
         ShapeAppearanceModel shapeAppearance =
             adjustShapeAppearanceModelCornerRadius(shapeAppearanceModel, strokeWidth / 2f);
         updateButtonShape(shapeAppearance);
@@ -322,8 +326,10 @@ void setCornerRadius(int cornerRadius) {
     if (!cornerRadiusSet || this.cornerRadius != cornerRadius) {
       this.cornerRadius = cornerRadius;
       cornerRadiusSet = true;
+
       setShapeAppearanceModel(
-          shapeAppearanceModel.withCornerRadius(cornerRadius + (strokeWidth / 2f)));
+          shapeAppearanceModel.withCornerRadius(
+              cornerAdjustmentEnabled ? cornerRadius + (strokeWidth / 2f) : cornerRadius));
     }
   }