Add more education tips for widgets. (3/3)

Show tip on reconfigurable widget in launcher.

Bug: 185354491
Test: Manually tested tips in widget picker, all apps, and
reconfigurable widgets tip.

Change-Id: I08154c944285cac6a21c3ef4aafd878bbbccf44b

res/layout/arrow_toast.xml

@@ -28,13 +28,14 @@
         android:padding="16dp"
         android:background="@drawable/arrow_toast_rounded_background"
         android:elevation="2dp"
+        android:outlineProvider="none"
         android:textColor="@color/arrow_tip_view_content"
         android:textSize="14sp"/>
 
     <View
         android:id="@+id/arrow"
         android:elevation="2dp"
+        android:outlineProvider="none"
         android:layout_width="@dimen/arrow_toast_arrow_width"
-        android:layout_height="8dp"
+        android:layout_height="10dp"/>
-        android:layout_marginTop="-2dp"/>
 </merge>

res/values-v28/dimens.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2009 The Android Open Source Project
+<!-- Copyright (C) 2021 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.

res/values/dimens.xml

@@ -61,6 +61,7 @@
     <dimen name="widget_reconfigure_button_padding">6dp</dimen>
     <dimen name="widget_reconfigure_button_margin">32dp</dimen>
     <dimen name="widget_reconfigure_button_size">36dp</dimen>
+    <dimen name="widget_reconfigure_tip_top_margin">16dp</dimen>
 
 <!-- Fast scroll -->
     <dimen name="fastscroll_track_min_width">6dp</dimen>

res/values/strings.xml

@@ -105,6 +105,11 @@
     <!-- Dialog text. This dialog lets a user know how they can use widgets on their phone.
          [CHAR_LIMIT=NONE] -->
     <string name="widget_education_content">To get info without opening apps, you can add widgets to your Home screen</string>
+
+    <!-- Text on an educational tip on widget informing users that they can change widget settings.
+         [CHAR_LIMIT=NONE] -->
+    <string name="reconfigurable_widget_education_tip">Tap to change widget settings</string>
+
     <!-- Text on the button that closes the education dialog about widgets. [CHAR_LIMIT=50] -->
     <string name="widget_education_close_button">Got it</string>
 

src/com/android/launcher3/AppWidgetResizeFrame.java

@@ -30,6 +30,7 @@ import com.android.launcher3.logging.InstanceId;
 import com.android.launcher3.logging.InstanceIdSequence;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.util.PendingRequestArgs;
+import com.android.launcher3.views.ArrowTipView;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.util.WidgetSizes;
@@ -42,6 +43,8 @@ public class AppWidgetResizeFrame extends AbstractFloatingView implements View.O
     private static final float DIMMED_HANDLE_ALPHA = 0f;
     private static final float RESIZE_THRESHOLD = 0.66f;
 
+    private static final String KEY_RECONFIGURABLE_WIDGET_EDUCATION_TIP_SEEN =
+            "launcher.reconfigurable_widget_education_tip_seen";
     private static final Rect sTmpRect = new Rect();
 
     private static final int HANDLE_COUNT = 4;
@@ -238,6 +241,15 @@ public class AppWidgetResizeFrame extends AbstractFloatingView implements View.O
                             mWidgetView.getAppWidgetId(),
                             Launcher.REQUEST_RECONFIGURE_APPWIDGET);
             });
+            if (!hasSeenReconfigurableWidgetEducationTip()) {
+                post(() -> {
+                    if (showReconfigurableWidgetEducationTip() != null) {
+                        mLauncher.getSharedPrefs().edit()
+                                .putBoolean(KEY_RECONFIGURABLE_WIDGET_EDUCATION_TIP_SEEN,
+                                        true).apply();
+                    }
+                });
+            }
         }
 
         // When we create the resize frame, we first mark all cells as unoccupied. The appropriate
@@ -679,4 +691,21 @@ public class AppWidgetResizeFrame extends AbstractFloatingView implements View.O
                 || keyCode == KeyEvent.KEYCODE_MOVE_HOME || keyCode == KeyEvent.KEYCODE_MOVE_END
                 || keyCode == KeyEvent.KEYCODE_PAGE_UP || keyCode == KeyEvent.KEYCODE_PAGE_DOWN);
     }
+
+    private ArrowTipView showReconfigurableWidgetEducationTip() {
+        int[] coords = new int[2];
+        mReconfigureButton.getLocationOnScreen(coords);
+        int tipTopMargin = mLauncher.getResources()
+                .getDimensionPixelSize(R.dimen.widget_reconfigure_tip_top_margin);
+        return new ArrowTipView(mLauncher, /* isPointingUp= */ true).showAtLocation(
+                getContext().getString(R.string.reconfigurable_widget_education_tip),
+                /* arrowXCoord= */ coords[0] + mReconfigureButton.getWidth() / 2,
+                /* yCoord= */ coords[1] + mReconfigureButton.getHeight() + tipTopMargin);
+    }
+
+    private boolean hasSeenReconfigurableWidgetEducationTip() {
+        return mLauncher.getSharedPrefs()
+                .getBoolean(KEY_RECONFIGURABLE_WIDGET_EDUCATION_TIP_SEEN, false)
+                || Utilities.IS_RUNNING_IN_TEST_HARNESS;
+    }
 }

src/com/android/launcher3/views/ArrowTipView.java

@@ -73,6 +73,9 @@ public class ArrowTipView extends AbstractFloatingView {
     public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
             close(true);
+            if (mActivity.getDragLayer().isEventOverView(this, ev)) {
+                return true;
+            }
         }
         return false;
     }
@@ -111,19 +114,19 @@ public class ArrowTipView extends AbstractFloatingView {
         ShapeDrawable arrowDrawable = new ShapeDrawable(TriangleShape.create(
                 arrowLp.width, arrowLp.height, mIsPointingUp));
         Paint arrowPaint = arrowDrawable.getPaint();
+        @Px int arrowTipRadius = getContext().getResources()
+                .getDimensionPixelSize(R.dimen.arrow_toast_corner_radius);
         arrowPaint.setColor(ContextCompat.getColor(getContext(), R.color.arrow_tip_view_bg));
-        // The corner path effect won't be reflected in the shadow, but shouldn't be noticeable.
+        arrowPaint.setPathEffect(new CornerPathEffect(arrowTipRadius));
-        arrowPaint.setPathEffect(new CornerPathEffect(
-                context.getResources().getDimension(R.dimen.arrow_toast_corner_radius)));
         arrowView.setBackground(arrowDrawable);
+        // Add negative margin so that the rounded corners on base of arrow are not visible.
         if (mIsPointingUp) {
             removeView(arrowView);
             addView(arrowView, 0);
+            ((ViewGroup.MarginLayoutParams) arrowLp).setMargins(0, 0, 0, -1 * arrowTipRadius);
+        } else {
+            ((ViewGroup.MarginLayoutParams) arrowLp).setMargins(0, -1 * arrowTipRadius, 0, 0);
         }
-
-        mIsOpen = true;
-
-        mHandler.postDelayed(() -> handleClose(true), AUTO_CLOSE_TIMEOUT_MILLIS);
     }
 
     /**
@@ -166,6 +169,9 @@ public class ArrowTipView extends AbstractFloatingView {
         params.leftMargin = mActivity.getDeviceProfile().workspacePadding.left;
         params.rightMargin = mActivity.getDeviceProfile().workspacePadding.right;
         post(() -> setY(top - (mIsPointingUp ? 0 : getHeight())));
+
+        mIsOpen = true;
+        mHandler.postDelayed(() -> handleClose(true), AUTO_CLOSE_TIMEOUT_MILLIS);
         setAlpha(0);
         animate()
                 .alpha(1f)
@@ -181,13 +187,12 @@ public class ArrowTipView extends AbstractFloatingView {
      * Show the ArrowTipView (tooltip) custom aligned.
      *
      * @param text The text to be shown in the tooltip.
-     * @param arrowXCoord The X coordinate for the arrow on the tip. The arrow is usually in the
+     * @param arrowXCoord The X coordinate for the arrow on the tooltip. The arrow is usually in the
-     *                    center of ArrowTipView unless the ArrowTipView goes beyond screen margin.
+     *                    center of tooltip unless the tooltip goes beyond screen margin.
-     * @param yCoord      The Y coordinate of the bottom of the tooltip.
+     * @param yCoord The Y coordinate of the pointed tip end of the tooltip.
-     * @return The tool tip view.
+     * @return The tool tip view. {@code null} if the tip can not be shown.
      */
-    @Nullable
+    @Nullable public ArrowTipView showAtLocation(String text, @Px int arrowXCoord, @Px int yCoord) {
-    public ArrowTipView showAtLocation(String text, int arrowXCoord, int yCoord) {
         ViewGroup parent = mActivity.getDragLayer();
         @Px int parentViewWidth = parent.getWidth();
         @Px int maxTextViewWidth = getContext().getResources()
@@ -209,19 +214,30 @@ public class ArrowTipView extends AbstractFloatingView {
             float halfWidth = getWidth() / 2f;
             float xCoord;
             if (arrowXCoord - halfWidth < minViewMargin) {
+                // If the tooltip is estimated to go beyond the left margin, place its start just at
+                // the left margin.
                 xCoord = minViewMargin;
             } else if (arrowXCoord + halfWidth > parentViewWidth - minViewMargin) {
+                // If the tooltip is estimated to go beyond the right margin, place it such that its
+                // end is just at the right margin.
                 xCoord = parentViewWidth - minViewMargin - getWidth();
             } else {
+                // Place the tooltip such that its center is at arrowXCoord.
                 xCoord = arrowXCoord - halfWidth;
             }
             setX(xCoord);
-            setY(yCoord - getHeight());
+            // Place the tooltip such that its top is at yCoord if arrow is pointing upwards,
+            // otherwise place it such that its bottom is at yCoord.
+            setY(mIsPointingUp ? yCoord : yCoord - getHeight());
+            // Adjust the arrow's relative position on tooltip to make sure the actual position of
+            // arrow's pointed tip is always at arrowXCoord.
             View arrowView = findViewById(R.id.arrow);
             arrowView.setX(arrowXCoord - xCoord - arrowView.getWidth() / 2f);
             requestLayout();
         });
 
+        mIsOpen = true;
+        mHandler.postDelayed(() -> handleClose(true), AUTO_CLOSE_TIMEOUT_MILLIS);
         setAlpha(0);
         animate()
                 .alpha(1f)

src/com/android/launcher3/widget/BaseWidgetSheet.java

@@ -207,16 +207,18 @@ public abstract class BaseWidgetSheet extends AbstractSlideInView<Launcher>
         if (view == null || !ViewCompat.isLaidOut(view)) {
             return null;
         }
-
-        mActivityContext.getSharedPrefs().edit()
-                .putBoolean(KEY_WIDGETS_EDUCATION_TIP_SEEN, true).apply();
         int[] coords = new int[2];
         view.getLocationOnScreen(coords);
-        ArrowTipView arrowTipView = new ArrowTipView(mActivityContext);
+        ArrowTipView arrowTipView =
-        return arrowTipView.showAtLocation(
+                new ArrowTipView(mActivityContext,  /* isPointingUp= */ false).showAtLocation(
                         getContext().getString(R.string.long_press_widget_to_add),
                         /* arrowXCoord= */coords[0] + view.getWidth() / 2,
                         /* yCoord= */coords[1]);
+        if (arrowTipView != null) {
+            mActivityContext.getSharedPrefs().edit()
+                    .putBoolean(KEY_WIDGETS_EDUCATION_TIP_SEEN, true).apply();
+        }
+        return arrowTipView;
     }
 
     /** Returns {@code true} if tip has previously been shown on any of {@link BaseWidgetSheet}. */