related to [issue #96], Suggestion for an easier way to apply foregro…

…und inset (#563)

* add adaptive icon foreground inset

* update README (added )

* add monochrome icons inset

README.md

@@ -105,6 +105,7 @@ Shown below is the full list of attributes which you can specify within your Flu
 be used to fill out the background of the adaptive icon.
 - `adaptive_icon_foreground`: The image asset which will be used for the icon foreground of the adaptive icon
 *Note: Adaptive Icons will only be generated when both adaptive_icon_background and adaptive_icon_foreground are specified. (the image_path is not automatically taken as foreground)*
+- `adaptive_icon_foreground_inset`: This is used to add padding to the icon when applying an adaptive icon. The default value is `16`.
 - `adaptive_icon_monochrome`: The image asset which will be used for the icon
 foreground of the Android 13+ themed icon. For more information see [Android Adaptive Icons](https://developer.android.com/develop/ui/views/launch/icon_design_adaptive#user-theming)
 

example/default_example/pubspec.yaml

@@ -21,6 +21,7 @@ flutter_launcher_icons:
   ios: true # can specify file name here e.g. "My-Launcher-Icon"
   adaptive_icon_background: "assets/images/christmas-background.png" # only available for Android 8.0 devices and above
   adaptive_icon_foreground: "assets/images/icon-foreground-432x432.png" # only available for Android 8.0 devices and above
+  adaptive_icon_foreground_inset: 16 # only available for Android 8.0 devices and above
   adaptive_icon_monochrome: "assets/images/icon-monochrome-432x432.png" # only available for Android 13 devices and above
   min_sdk_android: 21 # android min sdk min:16, default 21
   remove_alpha_ios: true

lib/android.dart

@@ -171,13 +171,23 @@ void createMipmapXmlFile(
           '  <background android:drawable="@color/ic_launcher_background"/>\n';
     }
 
-    xmlContent +=
-        '  <foreground android:drawable="@drawable/ic_launcher_foreground"/>\n';
+    xmlContent += '''
+  <foreground>
+      <inset
+          android:drawable="@drawable/ic_launcher_foreground"
+          android:inset="${config.adaptiveIconForegroundInset}%" />
+  </foreground>
+''';
   }
 
   if (config.hasAndroidAdaptiveMonochromeConfig) {
-    xmlContent +=
-        '  <monochrome android:drawable="@drawable/ic_launcher_monochrome"/>\n';
+    xmlContent += '''
+  <monochrome>
+      <inset
+          android:drawable="@drawable/ic_launcher_monochrome"
+          android:inset="${config.adaptiveIconForegroundInset}%" />
+  </monochrome>
+''';
   }
 
   late File mipmapXmlFile;

lib/config/config.dart

@@ -28,6 +28,7 @@ class Config {
     this.imagePathIOSDarkTransparent,
     this.imagePathIOSTintedGrayscale,
     this.adaptiveIconForeground,
+    this.adaptiveIconForegroundInset = 16,
     this.adaptiveIconBackground,
     this.adaptiveIconMonochrome,
     this.minSdkAndroid = constants.androidDefaultAndroidMinSDK,
@@ -132,6 +133,10 @@ class Config {
   @JsonKey(name: 'adaptive_icon_foreground')
   final String? adaptiveIconForeground;
 
+  /// android adaptive_icon_foreground inset
+  @JsonKey(name: 'adaptive_icon_foreground_inset')
+  final int adaptiveIconForegroundInset;
+
   /// android adaptive_icon_background image
   @JsonKey(name: 'adaptive_icon_background')
   final String? adaptiveIconBackground;