Create TestAvatarCreator for use in debug builds only

2026-02-12 18:59:06 +01:00 · 2020-11-27 13:51:56 -03:00
parent 00bf1eac0a
commit 6e5af2d3d3
5 changed files with 147 additions and 0 deletions
--- a/briar-android/src/debug/java/org/briarproject/briar/android/test/TestAvatarCreatorImpl.java
+++ b/briar-android/src/debug/java/org/briarproject/briar/android/test/TestAvatarCreatorImpl.java
@@ -0,0 +1,109 @@
+/*
+ * Some code was taken from:
+ *
+ * RIG – Random Image Generator
+ * https://github.com/stedi-akk/RandomImageGenerator
+ * licenced under Apache2 license.
+ */
+
+package org.briarproject.briar.android.test;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.Rect;
+
+import org.briarproject.briar.api.test.TestAvatarCreator;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.util.Random;
+
+import javax.annotation.Nullable;
+
+import static android.graphics.Bitmap.CompressFormat.JPEG;
+import static org.briarproject.briar.api.media.MediaConstants.MAX_IMAGE_SIZE;
+
+public class TestAvatarCreatorImpl implements TestAvatarCreator {
+	private final int WIDTH = 800;
+	private final int HEIGHT = 640;
+
+	private final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+	private final float[] hsv = new float[3];
+	private final Random random = new Random();
+
+	@Nullable
+	@Override
+	public InputStream getAvatarInputStream() {
+		Bitmap bitmap = generateBitmap();
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		// TODO maybe use ImageCompressor once available standalone
+		for (int quality = 100; quality >= 0; quality -= 10) {
+			if (!bitmap.compress(JPEG, quality, out)) return null;
+			if (out.size() <= MAX_IMAGE_SIZE) {
+				return new ByteArrayInputStream(out.toByteArray());
+			}
+			out.reset();
+		}
+		return new ByteArrayInputStream(out.toByteArray());
+	}
+
+	private Bitmap generateBitmap() {
+		// one pattern is boring, let's at least use two
+		if (random.nextBoolean()) {
+			return generateColoredPixels();
+		} else {
+			return generateColoredCircles();
+		}
+	}
+
+	private Bitmap generateColoredPixels() {
+		Bitmap bitmap = getBitmapWithRandomBackground();
+		Canvas canvas = new Canvas(bitmap);
+		Rect pixel = new Rect();
+		int pixelMultiplier = random.nextInt(500) + 1;
+		for (int x = 0; x < WIDTH; x += pixelMultiplier) {
+			for (int y = 0; y < HEIGHT; y += pixelMultiplier) {
+				pixel.set(x, y, x + pixelMultiplier, y + pixelMultiplier);
+				paint.setColor(getRandomColor());
+				canvas.drawRect(pixel, paint);
+			}
+		}
+		return bitmap;
+	}
+
+	private Bitmap generateColoredCircles() {
+		Bitmap bitmap = getBitmapWithRandomBackground();
+		int biggestSide = Math.max(WIDTH, HEIGHT);
+		int selectedCount = random.nextInt(10) + 2;
+		Canvas canvas = new Canvas(bitmap);
+		float radiusFrom = biggestSide / 12f;
+		float radiusTo = biggestSide / 4f;
+		for (int i = 0; i < selectedCount; i++) {
+			float cx = random.nextInt(WIDTH);
+			float cy = random.nextInt(HEIGHT);
+			float radius =
+					random.nextInt((int) (radiusTo - radiusFrom)) + radiusFrom;
+			paint.setColor(getRandomColor());
+			canvas.drawCircle(cx, cy, radius, paint);
+		}
+		return bitmap;
+	}
+
+	private Bitmap getBitmapWithRandomBackground() {
+		Bitmap bitmap =
+				Bitmap.createBitmap(WIDTH, HEIGHT, Bitmap.Config.ARGB_8888);
+		bitmap.eraseColor(getRandomColor());
+		return bitmap;
+	}
+
+	private int getRandomColor() {
+		hsv[0] = random.nextInt(360);
+		hsv[1] = random.nextFloat();
+		hsv[2] = 1f;
+		return Color.HSVToColor(hsv);
+	}
+
+}