From 2010b9a25cc51fa590b8e7d6cabf308aac7d406f Mon Sep 17 00:00:00 2001
From: Sylvia van Os <sylvia@hackerchick.me>
Date: Fri, 14 Jan 2022 20:41:04 +0100
Subject: [PATCH] Card-related colours on view screen

---
 .../protect/card_locker/LoyaltyCardViewActivity.java  | 11 +++++++++++
 app/src/main/java/protect/card_locker/Utils.java      | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java b/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
index 28a488503..10a2de4e3 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
@@ -2,6 +2,7 @@ package protect.card_locker;
 
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
+import android.content.res.ColorStateList;
 import android.content.res.Configuration;
 import android.database.sqlite.SQLiteDatabase;
 import android.graphics.Bitmap;
@@ -565,6 +566,16 @@ public class LoyaltyCardViewActivity extends CatimaAppCompatActivity implements
         storeName.setTextColor(textColor);
         landscapeToolbar.setTitleTextColor(textColor);
 
+        // Also apply colours to buttons
+        int darkenedColor = ColorUtils.blendARGB(backgroundHeaderColor, Color.BLACK, 0.1f);
+        maximizeButton.setBackgroundColor(darkenedColor);
+        minimizeButton.setBackgroundColor(darkenedColor);
+        bottomSheetButton.setBackgroundColor(darkenedColor);
+        maximizeButton.setColorFilter(textColor);
+        minimizeButton.setColorFilter(textColor);
+        bottomSheetButton.setColorFilter(textColor);
+        editButton.setBackgroundTintList(ColorStateList.valueOf(Utils.getComplementaryColor(darkenedColor)));
+
         Bitmap icon = Utils.retrieveCardImage(this, loyaltyCard.id, ImageLocationType.icon);
         if (icon != null) {
             int backgroundAlphaColor = Utils.needsDarkForeground(backgroundHeaderColor) ? Color.WHITE : Color.BLACK;
diff --git a/app/src/main/java/protect/card_locker/Utils.java b/app/src/main/java/protect/card_locker/Utils.java
index 0094bddd0..6173706ed 100644
--- a/app/src/main/java/protect/card_locker/Utils.java
+++ b/app/src/main/java/protect/card_locker/Utils.java
@@ -448,4 +448,15 @@ public class Utils {
         return loadImage(context.getCacheDir() + "/" + name);
     }
 
+    // https://stackoverflow.com/a/59324801/8378787
+    public static int getComplementaryColor(int color) {
+        int R = color & 255;
+        int G = (color >> 8) & 255;
+        int B = (color >> 16) & 255;
+        int A = (color >> 24) & 255;
+        R = 255 - R;
+        G = 255 - G;
+        B = 255 - B;
+        return R + (G << 8) + ( B << 16) + ( A << 24);
+    }
 }