CB-13685 android: Adaptive Icon Support

- Update default project template's icons to be adaptive.
- Added backwards support for non-adaptive icon supported devices.

bin/templates/cordova/lib/prepare.js

@@ -265,6 +265,14 @@ function getImageResourcePath (resourcesDir, type, density, name, sourceName) {
     return resourcePath;
 }
 
+function getAdaptiveImageResourcePath (resourcesDir, type, density, name, sourceName) {
+    if (/\.9\.png$/.test(sourceName)) {
+        name = name.replace(/\.png$/, '.9.png');
+    }
+    var resourcePath = path.join(resourcesDir, (density ? type + '-' + density + '-v26' : type), name);
+    return resourcePath;
+}
+
 function updateSplashes (cordovaProject, platformResourcesDir) {
     var resources = cordovaProject.projectConfig.getSplashScreens('android');
 
@@ -314,20 +322,197 @@ function cleanSplashes (projectRoot, projectConfig, platformResourcesDir) {
 }
 
 function updateIcons (cordovaProject, platformResourcesDir) {
-    var icons = cordovaProject.projectConfig.getIcons('android');
+    let icons = cordovaProject.projectConfig.getIcons('android');
 
-    // if there are icon elements in config.xml
+    // Skip if there are no app defined icons in config.xml
     if (icons.length === 0) {
         events.emit('verbose', 'This app does not have launcher icons defined');
         return;
     }
 
-    var resourceMap = mapImageResources(cordovaProject.root, platformResourcesDir, 'mipmap', 'icon.png');
+    // 1. loop icons determin if there is an error in the setup.
+    // 2. during initial loop, also setup for legacy support.
+    let errorMissingAttributes = [];
+    let errorLegacyIconNeeded = [];
+    let hasAdaptive = false;
+    icons.forEach((icon, key) => {
+        if (
+            (icon.background && !icon.foreground)
+            || (!icon.background && icon.foreground)
+            || (!icon.background && !icon.foreground && !icon.src)
+        ) {
+            errorMissingAttributes.push(icon.density ? icon.density : 'size=' + (icon.height || icon.width));
+        }
 
-    var android_icons = {};
-    var default_icon;
+        if (icon.foreground) {
+            hasAdaptive = true;
+
+            if (
+                !icon.src
+                && (
+                    icon.foreground.startsWith('@color')
+                    || path.extname(path.basename(icon.foreground)) === '.xml'
+                )
+            ) {
+                errorLegacyIconNeeded.push(icon.density ? icon.density : 'size=' + (icon.height || icon.width));
+            } else if (!icon.src) {
+                icons[key].src = icon.foreground;
+            }
+        }
+    });
+
+    let errorMessage = [];
+    if (errorMissingAttributes.length > 0) {
+        errorMessage.push('One of the following attributes are set but missing the other for the density type: ' + errorMissingAttributes.join(', ') + '. Please ensure that all require attributes are defined.');
+    }
+
+    if (errorLegacyIconNeeded.length > 0) {
+        errorMessage.push('For the following icons with the density of: ' + errorLegacyIconNeeded.join(', ') + ', adaptive foreground with a defined color or vector can not be used as a standard fallback icon for older Android devices. To support older Android environments, please provide a value for the src attribute.');
+    }
+
+    if (errorMessage.length > 0) {
+        throw new CordovaError(errorMessage.join(' '));
+    }
+
+    let resourceMap = Object.assign(
+        {},
+        mapImageResources(cordovaProject.root, platformResourcesDir, 'mipmap', 'ic_launcher.png'),
+        mapImageResources(cordovaProject.root, platformResourcesDir, 'mipmap', 'ic_launcher_foreground.png'),
+        mapImageResources(cordovaProject.root, platformResourcesDir, 'mipmap', 'ic_launcher_background.png'),
+        mapImageResources(cordovaProject.root, platformResourcesDir, 'mipmap', 'ic_launcher_foreground.xml'),
+        mapImageResources(cordovaProject.root, platformResourcesDir, 'mipmap', 'ic_launcher_background.xml'),
+        mapImageResources(cordovaProject.root, platformResourcesDir, 'mipmap', 'ic_launcher.xml')
+    );
+
+    let preparedIcons = prepareIcons(icons);
+
+    if (hasAdaptive) {
+        resourceMap = updateIconResourceForAdaptive(preparedIcons, resourceMap, platformResourcesDir);
+    }
+
+    resourceMap = updateIconResourceForLegacy(preparedIcons, resourceMap, platformResourcesDir);
+
+    events.emit('verbose', 'Updating icons at ' + platformResourcesDir);
+    FileUpdater.updatePaths(resourceMap, { rootDir: cordovaProject.root }, logFileOp);
+}
+
+function updateIconResourceForAdaptive (preparedIcons, resourceMap, platformResourcesDir) {
+    let android_icons = preparedIcons.android_icons;
+    let default_icon = preparedIcons.default_icon;
+
+    // The source paths for icons and splashes are relative to
+    // project's config.xml location, so we use it as base path.
+    let background;
+    let foreground;
+    let targetPathBackground;
+    let targetPathForeground;
+
+    for (let density in android_icons) {
+        let backgroundVal = '@mipmap/ic_launcher_background';
+        let foregroundVal = '@mipmap/ic_launcher_foreground';
+
+        background = android_icons[density].background;
+        foreground = android_icons[density].foreground;
+
+        if (background.startsWith('@color')) {
+            // Colors Use Case
+            backgroundVal = background; // Example: @color/background_foobar_1
+        } else if (path.extname(path.basename(background)) === '.xml') {
+            // Vector Use Case
+            targetPathBackground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', density, 'ic_launcher_background.xml', path.basename(android_icons[density].background));
+            resourceMap[targetPathBackground] = android_icons[density].background;
+        } else if (path.extname(path.basename(background)) === '.png') {
+            // Images Use Case
+            targetPathBackground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', density, 'ic_launcher_background.png', path.basename(android_icons[density].background));
+            resourceMap[targetPathBackground] = android_icons[density].background;
+        }
+
+        if (foreground.startsWith('@color')) {
+            // Colors Use Case
+            foregroundVal = foreground;
+        } else if (path.extname(path.basename(foreground)) === '.xml') {
+            // Vector Use Case
+            targetPathForeground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', density, 'ic_launcher_foreground.xml', path.basename(android_icons[density].foreground));
+            resourceMap[targetPathForeground] = android_icons[density].foreground;
+        } else if (path.extname(path.basename(foreground)) === '.png') {
+            // Images Use Case
+            targetPathForeground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', density, 'ic_launcher_foreground.png', path.basename(android_icons[density].foreground));
+            resourceMap[targetPathForeground] = android_icons[density].foreground;
+        }
+
+        // create an XML for DPI and set color
+        const icLauncherTemplate = `<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="` + backgroundVal + `" />
+    <foreground android:drawable="` + foregroundVal + `" />
+</adaptive-icon>`;
+
+        let launcherXmlPath = path.join(platformResourcesDir, 'mipmap-' + density + '-v26', 'ic_launcher.xml');
+
+        // Remove the XML from the resourceMap so the file does not get removed.
+        delete resourceMap[launcherXmlPath];
+
+        fs.writeFileSync(path.resolve(launcherXmlPath), icLauncherTemplate);
+    }
+
+    // There's no "default" drawable, so assume default == mdpi.
+    if (default_icon && !android_icons.mdpi) {
+        let defaultTargetPathBackground;
+        let defaultTargetPathForeground;
+
+        if (background.startsWith('@color')) {
+            // Colors Use Case
+            targetPathBackground = default_icon.background;
+        } else if (path.extname(path.basename(background)) === '.xml') {
+            // Vector Use Case
+            defaultTargetPathBackground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', 'mdpi', 'ic_launcher_background.xml', path.basename(default_icon.background));
+            resourceMap[defaultTargetPathBackground] = default_icon.background;
+        } else if (path.extname(path.basename(background)) === '.png') {
+            // Images Use Case
+            defaultTargetPathBackground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', 'mdpi', 'ic_launcher_background.png', path.basename(default_icon.background));
+            resourceMap[defaultTargetPathBackground] = default_icon.background;
+        }
+
+        if (foreground.startsWith('@color')) {
+            // Colors Use Case
+            targetPathForeground = default_icon.foreground;
+        } else if (path.extname(path.basename(foreground)) === '.xml') {
+            // Vector Use Case
+            defaultTargetPathForeground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', 'mdpi', 'ic_launcher_foreground.xml', path.basename(default_icon.foreground));
+            resourceMap[defaultTargetPathForeground] = default_icon.foreground;
+        } else if (path.extname(path.basename(foreground)) === '.png') {
+            // Images Use Case
+            defaultTargetPathForeground = getAdaptiveImageResourcePath(platformResourcesDir, 'mipmap', 'mdpi', 'ic_launcher_foreground.png', path.basename(default_icon.foreground));
+            resourceMap[defaultTargetPathForeground] = default_icon.foreground;
+        }
+    }
+
+    return resourceMap;
+}
+
+function updateIconResourceForLegacy (preparedIcons, resourceMap, platformResourcesDir) {
+    let android_icons = preparedIcons.android_icons;
+    let default_icon = preparedIcons.default_icon;
+
+    // The source paths for icons and splashes are relative to
+    // project's config.xml location, so we use it as base path.
+    for (var density in android_icons) {
+        var targetPath = getImageResourcePath(platformResourcesDir, 'mipmap', density, 'ic_launcher.png', path.basename(android_icons[density].src));
+        resourceMap[targetPath] = android_icons[density].src;
+    }
+
+    // There's no "default" drawable, so assume default == mdpi.
+    if (default_icon && !android_icons.mdpi) {
+        var defaultTargetPath = getImageResourcePath(platformResourcesDir, 'mipmap', 'mdpi', 'ic_launcher.png', path.basename(default_icon.src));
+        resourceMap[defaultTargetPath] = default_icon.src;
+    }
+
+    return resourceMap;
+}
+
+function prepareIcons (icons) {
     // http://developer.android.com/design/style/iconography.html
-    var sizeToDensityMap = {
+    const SIZE_TO_DENSITY_MAP = {
         36: 'ldpi',
         48: 'mdpi',
         72: 'hdpi',
@@ -335,11 +520,15 @@ function updateIcons (cordovaProject, platformResourcesDir) {
         144: 'xxhdpi',
         192: 'xxxhdpi'
     };
+
+    let android_icons = {};
+    let default_icon;
+
     // find the best matching icon for a given density or size
     // @output android_icons
     var parseIcon = function (icon, icon_size) {
         // do I have a platform icon for that density already
-        var density = icon.density || sizeToDensityMap[icon_size];
+        var density = icon.density || SIZE_TO_DENSITY_MAP[icon_size];
         if (!density) {
             // invalid icon defition ( or unsupported size)
             return;
@@ -355,12 +544,34 @@ function updateIcons (cordovaProject, platformResourcesDir) {
     for (var i = 0; i < icons.length; i++) {
         var icon = icons[i];
         var size = icon.width;
+
         if (!size) {
             size = icon.height;
         }
+
         if (!size && !icon.density) {
             if (default_icon) {
-                events.emit('verbose', 'Found extra default icon: ' + icon.src + ' (ignoring in favor of ' + default_icon.src + ')');
+                let found = {};
+                let favor = {};
+
+                // populating found icon.
+                if (icon.background && icon.foreground) {
+                    found.background = icon.background;
+                    found.foreground = icon.foreground;
+                }
+                if (icon.src) {
+                    found.src = icon.src;
+                }
+
+                if (default_icon.background && default_icon.foreground) {
+                    favor.background = default_icon.background;
+                    favor.foreground = default_icon.foreground;
+                }
+                if (default_icon.src) {
+                    favor.src = default_icon.src;
+                }
+
+                events.emit('verbose', 'Found extra default icon: ' + JSON.stringify(found) + ' and ignoring in favor of ' + JSON.stringify(favor) + '.');
             } else {
                 default_icon = icon;
             }
@@ -369,36 +580,35 @@ function updateIcons (cordovaProject, platformResourcesDir) {
         }
     }
 
-    // The source paths for icons and splashes are relative to
-    // project's config.xml location, so we use it as base path.
-    for (var density in android_icons) {
-        var targetPath = getImageResourcePath(
-            platformResourcesDir, 'mipmap', density, 'icon.png', path.basename(android_icons[density].src));
-        resourceMap[targetPath] = android_icons[density].src;
-    }
-
-    // There's no "default" drawable, so assume default == mdpi.
-    if (default_icon && !android_icons.mdpi) {
-        var defaultTargetPath = getImageResourcePath(
-            platformResourcesDir, 'mipmap', 'mdpi', 'icon.png', path.basename(default_icon.src));
-        resourceMap[defaultTargetPath] = default_icon.src;
-    }
-
-    events.emit('verbose', 'Updating icons at ' + platformResourcesDir);
-    FileUpdater.updatePaths(
-        resourceMap, { rootDir: cordovaProject.root }, logFileOp);
+    return {
+        android_icons: android_icons,
+        default_icon: default_icon
+    };
 }
 
 function cleanIcons (projectRoot, projectConfig, platformResourcesDir) {
     var icons = projectConfig.getIcons('android');
-    if (icons.length > 0) {
-        var resourceMap = mapImageResources(projectRoot, platformResourcesDir, 'mipmap', 'icon.png');
-        events.emit('verbose', 'Cleaning icons at ' + platformResourcesDir);
 
-        // No source paths are specified in the map, so updatePaths() will delete the target files.
-        FileUpdater.updatePaths(
-            resourceMap, { rootDir: projectRoot, all: true }, logFileOp);
+    // Skip if there are no app defined icons in config.xml
+    if (icons.length === 0) {
+        events.emit('verbose', 'This app does not have launcher icons defined');
+        return;
     }
+
+    let resourceMap = Object.assign(
+        {},
+        mapImageResources(projectRoot, platformResourcesDir, 'mipmap', 'ic_launcher.png'),
+        mapImageResources(projectRoot, platformResourcesDir, 'mipmap', 'ic_launcher_foreground.png'),
+        mapImageResources(projectRoot, platformResourcesDir, 'mipmap', 'ic_launcher_background.png'),
+        mapImageResources(projectRoot, platformResourcesDir, 'mipmap', 'ic_launcher_foreground.xml'),
+        mapImageResources(projectRoot, platformResourcesDir, 'mipmap', 'ic_launcher_background.xml'),
+        mapImageResources(projectRoot, platformResourcesDir, 'mipmap', 'ic_launcher.xml')
+    );
+
+    events.emit('verbose', 'Cleaning icons at ' + platformResourcesDir);
+
+    // No source paths are specified in the map, so updatePaths() will delete the target files.
+    FileUpdater.updatePaths(resourceMap, { rootDir: projectRoot, all: true }, logFileOp);
 }
 
 /**

bin/templates/project/AndroidManifest.xml

@@ -30,7 +30,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
 
-    <application android:icon="@mipmap/icon" android:label="@string/app_name"
+    <application android:icon="@mipmap/ic_launcher" android:label="@string/app_name"
         android:hardwareAccelerated="true" android:supportsRtl="true">
         <activity android:name="__ACTIVITY__"
                 android:label="@string/activity_name"

bin/templates/project/res/mipmap-hdpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@mipmap/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+</adaptive-icon>

bin/templates/project/res/mipmap-ldpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@mipmap/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+</adaptive-icon>

bin/templates/project/res/mipmap-mdpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@mipmap/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+</adaptive-icon>

bin/templates/project/res/mipmap-xhdpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@mipmap/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+</adaptive-icon>

bin/templates/project/res/mipmap-xxhdpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@mipmap/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+</adaptive-icon>

bin/templates/project/res/mipmap-xxxhdpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@mipmap/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+</adaptive-icon>