Added support for rotated and ranged drawings with LED matrix

SenseHatDriverDemo/build.gradle

@@ -1,14 +1,14 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 26
+    compileSdkVersion 28
     defaultConfig {
         applicationId "com.eon.androidthings.sensehat"
-        minSdkVersion 26
-        targetSdkVersion 26
+        minSdkVersion 27
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
@@ -20,14 +20,14 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestImplementation 'androidx.test:runner:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
 
-    implementation 'com.android.support:support-annotations:25.4.0'
+    implementation 'androidx.annotation:annotation:1.0.1'
 
-    compileOnly 'com.google.android.things:androidthings:+'
+    compileOnly 'com.google.android.things:androidthings:1.0'
     implementation project(path: ':SenseHatDriverLibrary')
 
     implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.0.2'

SenseHatDriverDemo/src/main/java/com/eon/androidthings/sensehat/HomeActivity.java

@@ -14,7 +14,7 @@
 import com.eon.androidthings.sensehatdriverlibrary.SenseHat;
 import com.eon.androidthings.sensehatdriverlibrary.devices.LedMatrix;
 import com.eon.androidthings.sensehat.demos.JoystickDemo;
-import com.eon.androidthings.sensehat.demos.TextScrollDemo;
+import com.eon.androidthings.sensehat.demos.LedDrawingDemo;
 import com.eon.androidthings.sensehat.uitils.NetworkUtils;
 
 import org.apache.commons.lang3.exception.ExceptionUtils;
@@ -41,7 +41,7 @@
 public class HomeActivity extends Activity {
 
     private JoystickDemo joystickDemo;
-    private TextScrollDemo textScrollDemo;
+    private LedDrawingDemo ledDrawingDemo;
 
     private TextView cursorCoordTextView;
     private TextView cursorColorTextView;
@@ -82,7 +82,7 @@ protected void onCreate(Bundle savedInstanceState) {
 
             /** Text-Scrolling
              */
-            this.textScrollDemo = new TextScrollDemo(sensorManager, this.getAssets());
+            this.ledDrawingDemo = new LedDrawingDemo(this);
 
             /**
              * Humidity and temperature demo...
@@ -118,7 +118,7 @@ public void onAccuracyChanged(Sensor sensor, int accuracy) {
             senseHat.addHumidityTempatureSensorListener(humidityListener, temperatureListener);
 
             /** Simple Joystick demo*/
-            this.joystickDemo = new JoystickDemo(sensorManager, new IGui() {
+            this.joystickDemo = new JoystickDemo(new IGui() {
                 @Override
                 public void setCursorInformations(final String xCoord, final String yCoord, final String color)
 

SenseHatDriverDemo/src/main/java/com/eon/androidthings/sensehat/demos/JoystickDemo.java

@@ -2,13 +2,12 @@
 
 import android.graphics.Bitmap;
 import android.graphics.Color;
-import android.hardware.SensorManager;
 
+import com.eon.androidthings.sensehat.gui.IGui;
 import com.eon.androidthings.sensehatdriverlibrary.SenseHat;
 import com.eon.androidthings.sensehatdriverlibrary.devices.JoystickDirectionEnum;
 import com.eon.androidthings.sensehatdriverlibrary.devices.JoystickListener;
 import com.eon.androidthings.sensehatdriverlibrary.devices.LedMatrix;
-import com.eon.androidthings.sensehat.gui.IGui;
 
 import java.io.IOException;
 
@@ -29,7 +28,7 @@ public class JoystickDemo {
 
     private IGui gui;
 
-    public JoystickDemo(SensorManager sensorManager, IGui gui) throws IOException {
+    public JoystickDemo(IGui gui) throws IOException {
         this.gui = gui;
 
         SenseHat senseHat = SenseHat.getInstance();

SenseHatDriverDemo/src/main/java/com/eon/androidthings/sensehat/demos/LedDrawingDemo.java

@@ -0,0 +1,89 @@
+package com.eon.androidthings.sensehat.demos;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.graphics.Rect;
+
+import com.eon.androidthings.sensehat.R;
+import com.eon.androidthings.sensehatdriverlibrary.SenseHat;
+import com.eon.androidthings.sensehatdriverlibrary.devices.LedMatrix;
+import com.eon.androidthings.sensehatdriverlibrary.devices.fonts.BlackWhiteFont;
+import com.eon.androidthings.sensehatdriverlibrary.devices.fonts.LEDFont;
+
+import java.io.IOException;
+
+/**
+ * LED Drawing Demo
+ */
+
+public class LedDrawingDemo {
+
+    public LedDrawingDemo(final Context context) throws IOException {
+
+        //SenseHat.init(sensorManager);
+ //      final LEDFont font = new MultiColorFont(assetmanager);
+        final LEDFont font = new BlackWhiteFont(context.getAssets());
+
+        // Draw one letter on the LED Matrix
+        //            Bitmap letterBitmap = font.getBitmapForLetter('a');
+        //            SenseHat.getInstance().getLedMatrix().draw(letterBitmap);
+
+        // infinity text scrolling
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    final LedMatrix ledMatrix = SenseHat.getInstance().getLedMatrix();
+                    // Render icon and text once and re-use.
+                    final Bitmap iconBitmap = createIconBitmap(context.getResources());
+                    // TODO At the moment only uppercase letters are working
+                    final Bitmap sentenceBitmap = font.getBitmapForSentence(" HELLO RASPI ");
+                    do {
+                        // Rotate iconBitmap a few times
+                        for (int rotation = 0; rotation < 12; rotation++) {
+                            ledMatrix.draw(iconBitmap, rotation);
+                            Thread.sleep(500);
+                        }
+                        // Scroll the text on screen.
+                        for (int currentX = 0; currentX < sentenceBitmap.getWidth() - LedMatrix.WIDTH; currentX++) {
+                            // Using the currentX value, draw a specific segment of the sentenceBitmap.
+                            ledMatrix.draw(
+                                    sentenceBitmap, currentX, 0, LedMatrix.WIDTH, LedMatrix.HEIGHT);
+                            Thread.sleep(100);
+                        }
+                    } while (true);
+                } catch (Exception e) {
+                    // TODO ExceptionHandling
+                    e.printStackTrace();
+                }
+            }
+        }).start();
+    }
+
+    Bitmap createIconBitmap(final Resources resources) {
+        // Setting up result canvas
+        final Bitmap result = Bitmap.createBitmap(
+                LedMatrix.WIDTH, LedMatrix.HEIGHT, Bitmap.Config.ARGB_8888, true);
+        final Canvas canvas = new Canvas(result);
+        // Background color and canvas Paint
+        canvas.drawColor(Color.BLUE);
+        final Paint paint = new Paint();
+        paint.setColorFilter(new PorterDuffColorFilter(Color.GREEN, PorterDuff.Mode.SRC_IN));
+        // Icon bitmap read
+        final Bitmap icon = BitmapFactory.decodeResource(resources, R.drawable.led_icon_android);
+        final Rect srcRect = new Rect(0, 0, icon.getWidth(), icon.getHeight());
+        final Rect dstRect = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
+        // Draw icon and recycle source bitmap
+        canvas.drawBitmap(icon, srcRect, dstRect, paint);
+        icon.recycle();
+        return result;
+    }
+
+}

SenseHatDriverLibrary/build.gradle

@@ -1,15 +1,15 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 26
+    compileSdkVersion 28
 
     defaultConfig {
-        minSdkVersion 26
-        targetSdkVersion 26
+        minSdkVersion 27
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
 
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
     }
 
@@ -25,10 +25,10 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
-    implementation 'com.android.support:appcompat-v7:26.1.0'
+    implementation 'androidx.appcompat:appcompat:1.0.2'
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    androidTestImplementation 'androidx.test:runner:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
 
-    compileOnly 'com.google.android.things:androidthings:+'
+    compileOnly 'com.google.android.things:androidthings:1.0'
 }

SenseHatDriverLibrary/src/main/java/com/eon/androidthings/sensehatdriverlibrary/devices/HumidityTemperatureSensor.java

@@ -1,13 +1,14 @@
 package com.eon.androidthings.sensehatdriverlibrary.devices;
 
-import android.support.annotation.IntDef;
-import android.support.annotation.VisibleForTesting;
 
 import com.eon.androidthings.sensehatdriverlibrary.utils.I2CDeviceRegistry;
 import com.google.android.things.pio.I2cDevice;
 
 import java.io.IOException;
 
+import androidx.annotation.IntDef;
+import androidx.annotation.VisibleForTesting;
+
 /**
  * I2C  Address  0x5f: 		HTS221		Humidity/Temperature
  */