Merge pull request #696 from saifkhichi96/patch-1

Added ability to customize colors in barcodes generated with BarcodeEncoder.

Author: rkistner

README.md

@@ -172,11 +172,13 @@ try {
 } catch(Exception e) {
 
 }
+```
 
-No customization of the image is currently supported, including changing colors or padding. If you
-require more customization, copy and modify the source for the encoder.
+To customize the generated barcode image, use the `setBackgroundColor` and `setForegroundColor` functions of the
+`BarcodeEncoder` class with a [`@ColorInt`](https://developer.android.com/reference/androidx/annotation/ColorInt)
+value to update the background and foreground colors of the barcode respectively. By default, the barcode has a
+white background and black foreground.
 
-```
 
 ### Changing the orientation
 

zxing-android-embedded/src/com/journeyapps/barcodescanner/BarcodeEncoder.java

@@ -19,21 +19,29 @@
  * Licensed under the Apache License, Version 2.0.
  */
 public class BarcodeEncoder {
-    private static final int WHITE = 0xFFFFFFFF;
-    private static final int BLACK = 0xFF000000;
+    private int bgColor = 0xFFFFFFFF;
+    private int fgColor = 0xFF000000;
 
 
     public BarcodeEncoder() {
     }
 
+    public void setBackgroundColor(int bgColor) {
+        this.bgColor = bgColor;
+    }
+
+    public void setForegroundColor(int fgColor)  {
+        this.fgColor = fgColor;
+    }
+
     public Bitmap createBitmap(BitMatrix matrix) {
         int width = matrix.getWidth();
         int height = matrix.getHeight();
         int[] pixels = new int[width * height];
         for (int y = 0; y < height; y++) {
             int offset = y * width;
             for (int x = 0; x < width; x++) {
-                pixels[offset + x] = matrix.get(x, y) ? BLACK : WHITE;
+                pixels[offset + x] = matrix.get(x, y) ? fgColor : bgColor;
             }
         }