1 files changed, 40 insertions, 0 deletions
diff --git a/java/com/android/incallui/answer/impl/classifier/SpeedClassifier.java b/java/com/android/incallui/answer/impl/classifier/SpeedClassifier.java
new file mode 100644
index 000000000..f3ade3f49
--- /dev/null
+++ b/java/com/android/incallui/answer/impl/classifier/SpeedClassifier.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2016 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.incallui.answer.impl.classifier;
+
+/**
+ * A classifier that looks at the speed of the stroke. It calculates the speed of a stroke in inches
+ * per second.
+ */
+class SpeedClassifier extends StrokeClassifier {
+
+  public SpeedClassifier(ClassifierData classifierData) {}
+
+  @Override
+  public String getTag() {
+    return "SPD";
+  }
+
+  @Override
+  public float getFalseTouchEvaluation(Stroke stroke) {
+    float duration = stroke.getDurationSeconds();
+    if (duration == 0.0f) {
+      return SpeedEvaluator.evaluate(0.0f);
+    }
+    return SpeedEvaluator.evaluate(stroke.getTotalLength() / duration);
+  }
+}