Merge "Align outer edge of profile tabs and icons" into tm-dev am: 4a191d7fad

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18566767

Change-Id: Ie03da3c82960034d1777511e58b1dc04a4ee6e70
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

core/java/com/android/internal/app/ChooserActivity.java

@@ -1002,6 +1002,7 @@ public class ChooserActivity extends ResolverActivity implements
         mMaxTargetsPerRow = getResources().getInteger(R.integer.config_chooser_max_targets_per_row);
         adjustPreviewWidth(newConfig.orientation, null);
         updateStickyContentPreview();
+        updateTabPadding();
     }
 
     private boolean shouldDisplayLandscape(int orientation) {
@@ -1024,6 +1025,20 @@ public class ChooserActivity extends ResolverActivity implements
         updateLayoutWidth(R.id.content_preview_file_layout, width, parent);
     }
 
+    private void updateTabPadding() {
+        if (shouldShowTabs()) {
+            View tabs = findViewById(R.id.tabs);
+            float iconSize = getResources().getDimension(R.dimen.chooser_icon_size);
+            // The entire width consists of icons or padding. Divide the item padding in half to get
+            // paddingHorizontal.
+            float padding = (tabs.getWidth() - mMaxTargetsPerRow * iconSize)
+                    / mMaxTargetsPerRow / 2;
+            // Subtract the margin the buttons already have.
+            padding -= getResources().getDimension(R.dimen.resolver_profile_tab_margin);
+            tabs.setPadding((int) padding, 0, (int) padding, 0);
+        }
+    }
+
     private void updateLayoutWidth(int layoutResourceId, int width, View parent) {
         View view = parent.findViewById(layoutResourceId);
         if (view != null && view.getLayoutParams() != null) {
@@ -2480,6 +2495,8 @@ public class ChooserActivity extends ResolverActivity implements
                 recyclerView.setAdapter(gridAdapter);
                 ((GridLayoutManager) recyclerView.getLayoutManager()).setSpanCount(
                         mMaxTargetsPerRow);
+
+                updateTabPadding();
             }
 
             UserHandle currentUserHandle = mChooserMultiProfilePagerAdapter.getCurrentUserHandle();

core/res/res/layout/resolver_list.xml

@@ -90,11 +90,13 @@
             android:orientation="vertical"
             android:layout_width="match_parent"
             android:layout_height="wrap_content">
+            <!-- horizontal padding = 8dp content padding - 4dp margin that tab buttons have. -->
             <TabWidget
                 android:id="@android:id/tabs"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:tabStripEnabled="false"
+                android:paddingHorizontal="4dp"
                 android:visibility="gone" />
             <FrameLayout
                 android:id="@android:id/tabcontent"

core/res/res/layout/resolver_profile_tab_button.xml

@@ -21,7 +21,7 @@
         android:layout_height="36dp"
         android:layout_weight="1"
         android:layout_marginVertical="6dp"
-        android:layout_marginHorizontal="4dp"
+        android:layout_marginHorizontal="@dimen/resolver_profile_tab_margin"
         android:background="@drawable/resolver_profile_tab_bg"
         android:textColor="@color/resolver_profile_tab_text"
         android:textSize="@dimen/resolver_tab_text_size"

core/res/res/values/dimens.xml

@@ -962,6 +962,7 @@
     <dimen name="resolver_title_padding_bottom">0dp</dimen>
     <dimen name="resolver_empty_state_container_padding_top">48dp</dimen>
     <dimen name="resolver_empty_state_container_padding_bottom">8dp</dimen>
+    <dimen name="resolver_profile_tab_margin">4dp</dimen>
 
     <dimen name="chooser_action_button_icon_size">18dp</dimen>
 

core/res/res/values/symbols.xml

@@ -4321,6 +4321,7 @@
   <java-symbol type="dimen" name="resolver_title_padding_bottom" />
   <java-symbol type="dimen" name="resolver_empty_state_container_padding_top" />
   <java-symbol type="dimen" name="resolver_empty_state_container_padding_bottom" />
+  <java-symbol type="dimen" name="resolver_profile_tab_margin" />
 
   <java-symbol type="string" name="config_deviceSpecificDisplayAreaPolicyProvider" />