Use a custom CSS file to make the LicenseDialog a little nicer

This is all we can do for now, for something even nicer we will have to switch to a different library

app/src/main/java/org/shadowice/flocke/andotp/Activities/AboutActivity.java

@@ -305,11 +305,20 @@ public class AboutActivity extends BaseActivity {
 
 
     public void showLicenses() {
-        new LicensesDialog.Builder(this)
+        String backgroundColor = Tools.getCSSRGBAString(Tools.getThemeColor(this, R.attr.colorBackgroundFloating));
+        String textColor = Tools.getCSSRGBAString(Tools.getThemeColor(this, android.R.attr.textColorPrimary));
+        String textColorSecondary = Tools.getCSSRGBAString(Tools.getThemeColor(this, android.R.attr.textColorSecondary));
+
+        String cssFormat = getString(R.string.custom_notices_style, backgroundColor, textColor, textColorSecondary);
+
+        LicensesDialog dialog = new LicensesDialog.Builder(this)
                 .setNotices(R.raw.licenses)
-                .setIncludeOwnLicense(true)
                 .setTitle(R.string.about_label_licenses)
-                .build()
+                .setShowFullLicenseText(false)
-                .show();
+                .setIncludeOwnLicense(true)
+                .setNoticesCssStyle(cssFormat)
+                .build();
+
+        dialog.show();
     }
 }

app/src/main/java/org/shadowice/flocke/andotp/Utilities/Tools.java

@@ -25,12 +25,14 @@ package org.shadowice.flocke.andotp.Utilities;
 import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
+import android.graphics.Color;
 import android.graphics.ColorFilter;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Environment;
+import android.support.annotation.ColorInt;
 
 import java.io.File;
 import java.text.DateFormat;
@@ -40,6 +42,8 @@ import java.util.Date;
 import java.util.Locale;
 
 public class Tools {
+    private final static String CSS_RGBA_FORMAT = "rgba(%1$d,%2$d,%3$d,%4$1f)";
+
     /* Checks if external storage is available for read and write */
     public static boolean isExternalStorageWritable() {
         String state = Environment.getExternalStorageState();
@@ -63,6 +67,14 @@ public class Tools {
         return colorValue;
     }
 
+    public static String getCSSRGBAString(@ColorInt int color) {
+        int red = Color.red(color);
+        int green = Color.green(color);
+        int blue = Color.blue(color);
+        float alpha = ((float) Color.alpha(color) / 255);
+        return String.format(Locale.ENGLISH, CSS_RGBA_FORMAT, red, green, blue, alpha);
+    }
+
     /* Create a ColorFilter based on the current theme */
     public static ColorFilter getThemeColorFilter(Context context, int colorAttr) {
         return new PorterDuffColorFilter(getThemeColor(context, colorAttr), PorterDuff.Mode.SRC_IN);

app/src/main/res/values/licenses_css.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="custom_notices_style" translatable="false">
+        body {
+            background-color: %1$s;
+            color: %2$s;
+            font-family: sans-serif;
+            overflow-wrap: break-word;
+        }
+        pre {
+            background-color: %1$s;
+            color: %3$s;
+            white-space: pre-wrap;
+            padding: 1em;
+        }
+    </string>
+</resources>