1 files changed, 142 insertions, 0 deletions
diff --git a/java/com/android/dialer/util/ViewUtil.java b/java/com/android/dialer/util/ViewUtil.java
new file mode 100644
index 000000000..81a32f985
--- /dev/null
+++ b/java/com/android/dialer/util/ViewUtil.java
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+/*
+ * Copyright (C) 2012 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.dialer.util;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.graphics.Paint;
+import android.os.PowerManager;
+import android.provider.Settings;
+import android.provider.Settings.Global;
+import android.support.annotation.NonNull;
+import android.text.TextUtils;
+import android.util.TypedValue;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewTreeObserver.OnGlobalLayoutListener;
+import android.view.ViewTreeObserver.OnPreDrawListener;
+import android.widget.TextView;
+import java.util.Locale;
+
+/** Provides static functions to work with views */
+public class ViewUtil {
+
+  private ViewUtil() {}
+
+  /** Similar to {@link Runnable} but takes a View parameter to operate on */
+  public interface ViewRunnable {
+    void run(@NonNull View view);
+  }
+
+  /**
+   * Returns the width as specified in the LayoutParams
+   *
+   * @throws IllegalStateException Thrown if the view's width is unknown before a layout pass s
+   */
+  public static int getConstantPreLayoutWidth(View view) {
+    // We haven't been layed out yet, so get the size from the LayoutParams
+    final ViewGroup.LayoutParams p = view.getLayoutParams();
+    if (p.width < 0) {
+      throw new IllegalStateException(
+          "Expecting view's width to be a constant rather " + "than a result of the layout pass");
+    }
+    return p.width;
+  }
+
+  /**
+   * Returns a boolean indicating whether or not the view's layout direction is RTL
+   *
+   * @param view - A valid view
+   * @return True if the view's layout direction is RTL
+   */
+  public static boolean isViewLayoutRtl(View view) {
+    return view.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL;
+  }
+
+  public static boolean isRtl() {
+    return TextUtils.getLayoutDirectionFromLocale(Locale.getDefault()) == View.LAYOUT_DIRECTION_RTL;
+  }
+
+  public static void resizeText(TextView textView, int originalTextSize, int minTextSize) {
+    final Paint paint = textView.getPaint();
+    final int width = textView.getWidth();
+    if (width == 0) {
+      return;
+    }
+    textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, originalTextSize);
+    float ratio = width / paint.measureText(textView.getText().toString());
+    if (ratio <= 1.0f) {
+      textView.setTextSize(
+          TypedValue.COMPLEX_UNIT_PX, Math.max(minTextSize, originalTextSize * ratio));
+    }
+  }
+
+  /** Runs a piece of code just before the next draw, after layout and measurement */
+  public static void doOnPreDraw(
+      @NonNull final View view, final boolean drawNextFrame, final Runnable runnable) {
+    view.getViewTreeObserver()
+        .addOnPreDrawListener(
+            new OnPreDrawListener() {
+              @Override
+              public boolean onPreDraw() {
+                view.getViewTreeObserver().removeOnPreDrawListener(this);
+                runnable.run();
+                return drawNextFrame;
+              }
+            });
+  }
+
+  public static void doOnPreDraw(
+      @NonNull final View view, final boolean drawNextFrame, final ViewRunnable runnable) {
+    view.getViewTreeObserver()
+        .addOnPreDrawListener(
+            new OnPreDrawListener() {
+              @Override
+              public boolean onPreDraw() {
+                view.getViewTreeObserver().removeOnPreDrawListener(this);
+                runnable.run(view);
+                return drawNextFrame;
+              }
+            });
+  }
+
+  public static void doOnGlobalLayout(@NonNull final View view, final ViewRunnable runnable) {
+    view.getViewTreeObserver()
+        .addOnGlobalLayoutListener(
+            new OnGlobalLayoutListener() {
+              @Override
+              public void onGlobalLayout() {
+                view.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                runnable.run(view);
+              }
+            });
+  }
+
+  /**
+   * Returns {@code true} if animations should be disabled.
+   *
+   * <p>Animations should be disabled if {@link
+   * android.provider.Settings.Global#ANIMATOR_DURATION_SCALE} is set to 0 through system settings
+   * or the device is in power save mode.
+   */
+  public static boolean areAnimationsDisabled(Context context) {
+    ContentResolver contentResolver = context.getContentResolver();
+    PowerManager powerManager = context.getSystemService(PowerManager.class);
+    return Settings.Global.getFloat(contentResolver, Global.ANIMATOR_DURATION_SCALE, 1.0f) == 0
+        || powerManager.isPowerSaveMode();
+  }
+}