Fix the vertical positioning of the text in collapsed notifications.

Test: manual / visual Bug: 181048615 Change-Id: I57fb542a776b254a6537dbed608259e69def411f
2021-02-26 13:53:12 -05:00
parent 072848e163
commit 19864ec962
2 changed files with 82 additions and 4 deletions
--- a/core/java/com/android/internal/widget/NotificationVanishingFrameLayout.java
+++ b/core/java/com/android/internal/widget/NotificationVanishingFrameLayout.java
@@ -0,0 +1,70 @@
+/*
+ * 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.
+ * 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.android.internal.widget;
+
+import android.annotation.Nullable;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.RemoteViews;
+
+/**
+ * This view will measure itself as having 0 size if all of its children are {@link #GONE}.
+ * Otherwise it acts like a normal {@link FrameLayout}.
+ */
+@RemoteViews.RemoteView
+public class NotificationVanishingFrameLayout extends FrameLayout {
+    public NotificationVanishingFrameLayout(Context context) {
+        this(context, null, 0, 0);
+    }
+
+    public NotificationVanishingFrameLayout(Context context, @Nullable AttributeSet attrs) {
+        this(context, attrs, 0, 0);
+    }
+
+    public NotificationVanishingFrameLayout(Context context, @Nullable AttributeSet attrs,
+            int defStyleAttr) {
+        this(context, attrs, defStyleAttr, 0);
+    }
+
+    public NotificationVanishingFrameLayout(Context context, AttributeSet attrs, int defStyleAttr,
+            int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        if (allChildrenGone()) {
+            int zeroSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.EXACTLY);
+            super.onMeasure(zeroSpec, zeroSpec);
+        } else {
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        }
+    }
+
+    private boolean allChildrenGone() {
+        final int childCount = getChildCount();
+        for (int i = 0; i < childCount; i++) {
+            final View child =  getChildAt(i);
+            if (child != null && child.getVisibility() != GONE) {
+                return false;
+            }
+        }
+        return true;
+    }
+}