Make landscape all apps caret clickable when in all apps as well as workspace

-> Also increase the touch target size of the caret
-> Center the asset horizontally within the view (but keep it bottom
   asligned)

issue 63681599
issue 63682248

Change-Id: I64efdfb9f84b82cc21d82c10d9301a99fed3353a

res/layout-land/launcher.xml

@@ -60,13 +60,6 @@
             android:id="@+id/overview_panel"
             android:visibility="gone" />
 
-        <com.android.launcher3.pageindicators.PageIndicatorCaretLandscape
-            android:id="@+id/page_indicator"
-            android:theme="@style/HomeScreenElementTheme"
-            android:layout_width="@dimen/dynamic_grid_min_page_indicator_size"
-            android:layout_height="@dimen/dynamic_grid_min_page_indicator_size"
-            android:layout_gravity="bottom|left"/>
-
         <include layout="@layout/widgets_view"
             android:id="@+id/widgets_view"
             android:layout_width="match_parent"
@@ -79,6 +72,13 @@
             android:layout_height="match_parent"
             android:visibility="invisible" />
 
+        <com.android.launcher3.pageindicators.PageIndicatorCaretLandscape
+            android:id="@+id/page_indicator"
+            android:theme="@style/HomeScreenElementTheme"
+            android:layout_width="@dimen/dynamic_grid_min_page_indicator_size"
+            android:layout_height="@dimen/dynamic_grid_min_page_indicator_size"
+            android:layout_gravity="bottom|left"/>
+
     </com.android.launcher3.dragndrop.DragLayer>
 
 </com.android.launcher3.LauncherRootView>

res/values-land/dimens.xml

@@ -26,7 +26,7 @@
 
     <!-- Dynamic grid -->
     <dimen name="dynamic_grid_overview_bar_item_width">120dp</dimen>
-    <dimen name="dynamic_grid_min_page_indicator_size">24dp</dimen>
+    <dimen name="dynamic_grid_min_page_indicator_size">48dp</dimen>
     <dimen name="folder_preview_padding">5dp</dimen>
 
     <!-- Hotseat -->

src/com/android/launcher3/Launcher.java

@@ -2256,8 +2256,9 @@ public class Launcher extends BaseActivity
             if (v instanceof FolderIcon) {
                 onClickFolderIcon(v);
             }
-        } else if ((FeatureFlags.LAUNCHER3_ALL_APPS_PULL_UP && v instanceof PageIndicator) ||
-                (v == mAllAppsButton && mAllAppsButton != null)) {
+        } else if ((FeatureFlags.LAUNCHER3_ALL_APPS_PULL_UP && v instanceof PageIndicator)) {
+            onClickAllAppsCaret(v);
+        } else if (v == mAllAppsButton && mAllAppsButton != null) {
             onClickAllAppsButton(v);
         } else if (tag instanceof AppInfo) {
             startAppShortcutOrInfoActivity(v);
@@ -2322,6 +2323,22 @@ public class Launcher extends BaseActivity
         }
     }
 
+    /**
+     * Event handler for the swipe up caret
+     *
+     * @param v The view that was clicked.
+     */
+    protected void onClickAllAppsCaret(View v) {
+        if (LOGD) Log.d(TAG, "onClickAllAppsCaret");
+        if (!isAppsViewVisible()) {
+            getUserEventDispatcher().logActionOnControl(Action.Touch.TAP,
+                    ControlType.ALL_APPS_BUTTON);
+            showAppsView(true /* animated */, true /* updatePredictedApps */);
+        } else {
+            showWorkspace(true);
+        }
+    }
+
     private void onClickPendingAppItem(final View v, final String packageName,
             boolean downloadStarted) {
         if (downloadStarted) {

src/com/android/launcher3/pageindicators/PageIndicatorCaretLandscape.java

@@ -57,7 +57,7 @@ public class PageIndicatorCaretLandscape extends PageIndicator {
     protected void onDraw(Canvas canvas) {
         Rect drawableBounds = getCaretDrawable().getBounds();
         int count = canvas.save();
-        canvas.translate(getWidth() - drawableBounds.width(),
+        canvas.translate((getWidth() - drawableBounds.width()) / 2,
                 getHeight() - drawableBounds.height());
         getCaretDrawable().draw(canvas);
         canvas.restoreToCount(count);