contrib-drivers: bootstrap sensehat driver

Change-Id: Ibba688b1671d7e6ba19a996be7c120f1231bff75

sensehat/.driver-metadata

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+TYPE="metadriver for the Sense HAT"

sensehat/.gitignore

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+/build

sensehat/README.md

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+Sense Hat driver for Android Things
+=====================================
+
+This driver provides easy access to the peripherals available on the Raspberry Pi [Sense Hat][product]:
+- 8x8 LED matrix
+- TODO: 5 buttons joystick
+- TODO: Sensors
+
+
+NOTE: these drivers are not production-ready. They are offered as sample
+implementations of Android Things user space drivers for common peripherals
+as part of the Developer Preview release. There is no guarantee
+of correctness, completeness or robustness.
+
+How to use the driver
+---------------------
+
+### Gradle dependency
+
+To use the `sensehat` driver, simply add the line below to your project's `build.gradle`,
+where `<version>` matches the last version of the driver available on [jcenter][jcenter].
+
+```
+dependencies {
+    compile 'com.google.android.things.contrib:driver-sensehat:<version>'
+}
+```
+
+### Sample usage
+
+```
+// import the SenseHat driver
+import com.google.android.things.driver.sensehat.SenseHat;
+```
+```
+// Color the LED matrix.
+LedMatrix display = SenseHat.openDisplay();
+display.draw(Color.MAGENTA);
+```
+```
+//  Display a drawable on the LED matrix.
+display.draw(context.getDrawable(android.R.drawable.ic_dialog_alert));
+```
+```
+// Display a gradient on the LED matrix.
+Bitmap bitmap = Bitmap.createBitmap(SenseHat.DISPLAY_WIDTH, SenseHat.DISPLAY_HEIGHT, Bitmap.Config.ARGB_8888);
+Canvas canvas = new Canvas(bitmap);
+Paint paint = new Paint();
+paint.setShader(new RadialGradient(4, 4, 4, Color.RED, Color.BLUE, Shader.TileMode.CLAMP));
+canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), paint);
+display.draw(bitmap);
+```
+```
+// Close the display when done.
+display.close();
+```
+
+License
+-------
+
+Copyright 2016 Google Inc.
+
+Licensed to the Apache Software Foundation (ASF) under one or more contributor
+license agreements.  See the NOTICE file distributed with this work for
+additional information regarding copyright ownership.  The ASF licenses this
+file to you 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.
+
+[product]: https://www.raspberrypi.org/products/sense-hat/
+[jcenter]: https://bintray.com/google/androidthings/contrib-driver-sensehat

sensehat/build.gradle

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+/*
+ * Copyright 2016 Google Inc.
+ *
+ * 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.
+ */
+
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 24
+    buildToolsVersion '24.0.3'
+
+    defaultConfig {
+        minSdkVersion 24
+        targetSdkVersion 24
+        versionCode 1
+        versionName "1.0"
+    }
+}
+
+dependencies {
+    compile 'com.android.support:support-annotations:24.2.0'
+    provided 'com.google.android.things:androidthings:0.1-devpreview'
+    androidTestCompile 'com.android.support.test:runner:0.5'
+    androidTestCompile 'com.android.support.test:rules:0.5'
+}
+
+android {
+    defaultConfig {
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+}

sensehat/publish.gradle

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+/*
+ * Copyright 2016 Google Inc.
+ *
+ * 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.
+ */
+
+/**
+ *  To publish on Bintray:
+ *  - set environmental variables BINTRAY_USER and BINTRAY_API_KEY to proper values
+ *  - from this directory:
+ *     ../gradlew -b publish.gradle bintrayUpload
+ *
+ */
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.2.1'
+    }
+}
+
+plugins {
+    id "com.jfrog.bintray" version "1.7"
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}
+
+apply from: 'build.gradle'
+apply plugin: 'maven-publish'
+
+def packageVersion = '0.1'
+
+task sourceJar(type: Jar) {
+    classifier = 'sources'
+    from android.sourceSets.main.java.sourceFiles
+}
+
+publishing {
+    publications {
+        driverPublish(MavenPublication) {
+            groupId 'com.google.android.things.contrib'
+            artifactId "driver-$project.name"
+            version packageVersion
+            artifacts = configurations.archives.artifacts
+            artifact sourceJar
+            pom.withXml {
+                def dependenciesNode = asNode().appendNode('dependencies')
+                configurations.compile.allDependencies.each {
+                    if(it.group != null && (it.name != null || "unspecified".equals(it.name)) && it.version != null)
+                    {
+                        def dependencyNode = dependenciesNode.appendNode('dependency')
+                        dependencyNode.appendNode('groupId', it.group)
+                        dependencyNode.appendNode('artifactId', it.name)
+                        dependencyNode.appendNode('version', it.version)
+                    }
+                }
+            }
+        }
+    }
+}
+
+bintray {
+  user = System.getenv('BINTRAY_USER')
+  key = System.getenv('BINTRAY_API_KEY')
+  publications = ['driverPublish']
+
+  publish = true
+
+  pkg {
+    repo = 'androidthings'
+    name = "contrib-driver-$project.name"
+    userOrg = 'google'
+
+    version {
+      name = packageVersion
+      gpg {
+        sign = true
+      }
+    }
+  }
+}

sensehat/src/androidTest/java/com/google/android/things/contrib/driver/sensehat/SenseHatDeviceTest.java

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+/*
+ * Copyright 2016 Google Inc.
+ *
+ * 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.google.android.things.contrib.driver.sensehat;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.RadialGradient;
+import android.graphics.Shader;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.IOException;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class SenseHatDeviceTest {
+    @Test
+    public void senseHat_DisplayColor() throws IOException {
+        // Color the LED matrix.
+        LedMatrix display = SenseHat.openDisplay();
+
+        display.draw(Color.MAGENTA);
+        // Close the display when done.
+        display.close();
+    }
+
+    @Test
+    public void senseHat_DisplayDrawable() throws IOException {
+        Context context = InstrumentationRegistry.getTargetContext();
+        // Display a drawable on the LED matrix.
+        LedMatrix display = SenseHat.openDisplay();
+        display.draw(context.getDrawable(android.R.drawable.ic_secure));
+        // Close the display when done.
+        display.close();
+    }
+
+    @Test
+    public void senseHat_DisplayGradient() throws IOException {
+        // Display a gradient on the LED matrix.
+        LedMatrix display = SenseHat.openDisplay();
+        Bitmap bitmap = Bitmap.createBitmap(SenseHat.DISPLAY_WIDTH, SenseHat.DISPLAY_HEIGHT, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        Paint paint = new Paint();
+        paint.setShader(new RadialGradient(4, 4, 4, Color.RED, Color.BLUE, Shader.TileMode.CLAMP));
+        canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), paint);
+        display.draw(bitmap);
+        // Close the display when done.
+        display.close();
+    }
+}

sensehat/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2016 Google Inc.
+
+ 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.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.google.android.things.contrib.driver.sensehat">
+    <application>
+        <uses-library android:name="com.google.android.things"/>
+    </application>
+</manifest>