Introduce perf test for Layout.getOffsetForHorizontal

Bug: 78464361
Test: atest StaticLayoutGetOffsetForHorizontalPerfTest
Change-Id: I2543463daddf6ab174c14e11705de603d0286690

diff --git a/apct-tests/perftests/core/src/android/text/StaticLayoutGetOffsetForHorizontalPerfTest.java b/apct-tests/perftests/core/src/android/text/StaticLayoutGetOffsetForHorizontalPerfTest.java
new file mode 100644 (file)
index 0000000..2768a7d
--- /dev/null
+++ b/apct-tests/perftests/core/src/android/text/StaticLayoutGetOffsetForHorizontalPerfTest.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2018 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 android.text;
+
+import android.perftests.utils.BenchmarkState;
+import android.perftests.utils.PerfStatusReporter;
+
+import android.support.test.filters.LargeTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@LargeTest
+@RunWith(AndroidJUnit4.class)
+public class StaticLayoutGetOffsetForHorizontalPerfTest {
+    private static final int WORD_LENGTH = 9;  // Random word has 9 characters.
+    private static final int WORDS_IN_LINE = 64;  // Roughly, 64 words in a line.
+    private static final boolean NO_STYLE_TEXT = false;
+    private static final boolean STYLE_TEXT = true;
+
+    private static TextPaint PAINT = new TextPaint();
+    static {
+        PAINT.setTextSize(16.0f);
+    }
+    private static final int TEXT_WIDTH = WORDS_IN_LINE * WORD_LENGTH * (int) PAINT.getTextSize();
+
+    public StaticLayoutGetOffsetForHorizontalPerfTest() {}
+
+    @Rule
+    public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
+
+    private TextPerfUtils mTextUtil = new TextPerfUtils();
+
+    @Before
+    public void setUp() {
+        mTextUtil.resetRandom(0 /* seed */);
+    }
+
+    @Test
+    public void testGetOffsetForHorizontal_LTR() {
+        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        while (state.keepRunning()) {
+            state.pauseTiming();
+            final CharSequence text = mTextUtil.nextRandomParagraph(WORD_LENGTH, NO_STYLE_TEXT,
+                    "[a-zA-Z]");
+            StaticLayout layout =
+                    StaticLayout.Builder.obtain(text, 0, text.length(), PAINT, TEXT_WIDTH).build();
+            state.resumeTiming();
+
+            layout.getOffsetForHorizontal(0, TEXT_WIDTH / 2.0f);
+        }
+    }
+
+    @Test
+    public void testGetOffsetForHorizontal_RTL() {
+        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        while (state.keepRunning()) {
+            state.pauseTiming();
+            final CharSequence text = mTextUtil.nextRandomParagraph(WORD_LENGTH, NO_STYLE_TEXT,
+                    "[:Arabic:]");
+            StaticLayout layout =
+                    StaticLayout.Builder.obtain(text, 0, text.length(), PAINT, TEXT_WIDTH).build();
+            state.resumeTiming();
+
+            layout.getOffsetForHorizontal(0, TEXT_WIDTH / 2.0f);
+        }
+    }
+
+    @Test
+    public void testGetOffsetForHorizontal_BiDi() {
+        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        while (state.keepRunning()) {
+            state.pauseTiming();
+            final CharSequence text = mTextUtil.nextRandomParagraph(WORD_LENGTH, NO_STYLE_TEXT,
+                    "[[a-zA-Z][:Arabic:]]");
+            StaticLayout layout =
+                    StaticLayout.Builder.obtain(text, 0, text.length(), PAINT, TEXT_WIDTH).build();
+            state.resumeTiming();
+
+            layout.getOffsetForHorizontal(0, TEXT_WIDTH / 2.0f);
+        }
+    }
+}