| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.chrome.browser; |
| |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.Path; |
| import android.graphics.PorterDuff; |
| import android.graphics.PorterDuffXfermode; |
| import android.graphics.Rect; |
| import android.graphics.RectF; |
| import android.graphics.drawable.BitmapDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.text.TextUtils; |
| import android.util.Base64; |
| |
| import org.chromium.base.ApiCompatibilityUtils; |
| import org.chromium.base.ContextUtils; |
| import org.chromium.base.Log; |
| import org.chromium.base.ThreadUtils; |
| import org.chromium.base.VisibleForTesting; |
| import org.chromium.base.annotations.CalledByNative; |
| import org.chromium.blink_public.platform.WebDisplayMode; |
| import org.chromium.chrome.R; |
| import org.chromium.chrome.browser.webapps.WebappAuthenticator; |
| import org.chromium.chrome.browser.webapps.WebappDataStorage; |
| import org.chromium.chrome.browser.webapps.WebappLauncherActivity; |
| import org.chromium.chrome.browser.webapps.WebappRegistry; |
| import org.chromium.chrome.browser.widget.RoundedIconGenerator; |
| import org.chromium.content_public.common.ScreenOrientationConstants; |
| import org.chromium.ui.widget.Toast; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.util.List; |
| |
| /** |
| * This class contains functions related to adding shortcuts to the Android Home |
| * screen. These shortcuts are used to either open a page in the main browser |
| * or open a web app. |
| */ |
| public class ShortcutHelper { |
| public static final String EXTRA_ICON = "org.chromium.chrome.browser.webapp_icon"; |
| public static final String EXTRA_ID = "org.chromium.chrome.browser.webapp_id"; |
| public static final String EXTRA_MAC = "org.chromium.chrome.browser.webapp_mac"; |
| // EXTRA_TITLE is present for backward compatibility reasons |
| public static final String EXTRA_TITLE = "org.chromium.chrome.browser.webapp_title"; |
| public static final String EXTRA_NAME = "org.chromium.chrome.browser.webapp_name"; |
| public static final String EXTRA_SHORT_NAME = "org.chromium.chrome.browser.webapp_short_name"; |
| public static final String EXTRA_URL = "org.chromium.chrome.browser.webapp_url"; |
| public static final String EXTRA_SCOPE = "org.chromium.chrome.browser.webapp_scope"; |
| public static final String EXTRA_DISPLAY_MODE = |
| "org.chromium.chrome.browser.webapp_display_mode"; |
| public static final String EXTRA_ORIENTATION = ScreenOrientationConstants.EXTRA_ORIENTATION; |
| public static final String EXTRA_SOURCE = "org.chromium.chrome.browser.webapp_source"; |
| public static final String EXTRA_THEME_COLOR = "org.chromium.chrome.browser.theme_color"; |
| public static final String EXTRA_BACKGROUND_COLOR = |
| "org.chromium.chrome.browser.background_color"; |
| public static final String EXTRA_IS_ICON_GENERATED = |
| "org.chromium.chrome.browser.is_icon_generated"; |
| public static final String EXTRA_VERSION = |
| "org.chromium.chrome.browser.webapp_shortcut_version"; |
| public static final String REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB = |
| "REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB"; |
| public static final String EXTRA_WEBAPK_PACKAGE_NAME = |
| "org.chromium.chrome.browser.webapk_package_name"; |
| |
| // When a new field is added to the intent, this version should be incremented so that it will |
| // be correctly populated into the WebappRegistry/WebappDataStorage. |
| public static final int WEBAPP_SHORTCUT_VERSION = 2; |
| |
| // This value is equal to kInvalidOrMissingColor in the C++ content::Manifest struct. |
| public static final long MANIFEST_COLOR_INVALID_OR_MISSING = ((long) Integer.MAX_VALUE) + 1; |
| |
| private static final String TAG = "ShortcutHelper"; |
| |
| // There is no public string defining this intent so if Home changes the value, we |
| // have to update this string. |
| private static final String INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT"; |
| |
| // These sizes are from the Material spec for icons: |
| // https://www.google.com/design/spec/style/icons.html#icons-product-icons |
| private static final float MAX_INNER_SIZE_RATIO = 1.25f; |
| private static final float ICON_PADDING_RATIO = 2.0f / 44.0f; |
| private static final float ICON_CORNER_RADIUS_RATIO = 1.0f / 16.0f; |
| private static final float GENERATED_ICON_PADDING_RATIO = 1.0f / 12.0f; |
| private static final float GENERATED_ICON_FONT_SIZE_RATIO = 1.0f / 3.0f; |
| |
| /** Broadcasts Intents out Android for adding the shortcut. */ |
| public static class Delegate { |
| /** |
| * Broadcasts an intent to all interested BroadcastReceivers. |
| * @param context The Context to use. |
| * @param intent The intent to broadcast. |
| */ |
| public void sendBroadcast(Context context, Intent intent) { |
| context.sendBroadcast(intent); |
| } |
| |
| /** |
| * Returns the name of the fullscreen Activity to use when launching shortcuts. |
| */ |
| public String getFullscreenAction() { |
| return WebappLauncherActivity.ACTION_START_WEBAPP; |
| } |
| } |
| |
| private static Delegate sDelegate = new Delegate(); |
| |
| /** |
| * Sets the delegate to use. |
| */ |
| @VisibleForTesting |
| public static void setDelegateForTests(Delegate delegate) { |
| sDelegate = delegate; |
| } |
| |
| /** |
| * Called when we have to fire an Intent to add a shortcut to the home screen. |
| * If the webpage indicated that it was capable of functioning as a webapp, it is added as a |
| * shortcut to a webapp Activity rather than as a general bookmark. User is sent to the |
| * home screen as soon as the shortcut is created. |
| * |
| * This method must not be called on the UI thread. |
| */ |
| @SuppressWarnings("unused") |
| @CalledByNative |
| private static void addShortcut(Context context, String id, String url, final String userTitle, |
| String name, String shortName, Bitmap icon, int displayMode, int orientation, |
| int source, long themeColor, long backgroundColor, boolean isIconGenerated, |
| final long callbackPointer) { |
| assert !ThreadUtils.runningOnUiThread(); |
| final Intent shortcutIntent; |
| boolean isWebappCapable = (displayMode == WebDisplayMode.Standalone |
| || displayMode == WebDisplayMode.Fullscreen); |
| if (isWebappCapable) { |
| shortcutIntent = createWebappShortcutIntent(id, sDelegate.getFullscreenAction(), url, |
| getScopeFromUrl(url), name, shortName, icon, WEBAPP_SHORTCUT_VERSION, |
| displayMode, orientation, themeColor, backgroundColor, isIconGenerated); |
| shortcutIntent.putExtra(EXTRA_MAC, getEncodedMac(context, url)); |
| } else { |
| // Add the shortcut as a launcher icon to open in the browser Activity. |
| shortcutIntent = createShortcutIntent(url); |
| } |
| |
| // Always attach a source (one of add to home screen menu item, app banner, or unknown) to |
| // the intent. This allows us to distinguish where a shortcut was added from in metrics. |
| shortcutIntent.putExtra(EXTRA_SOURCE, source); |
| shortcutIntent.setPackage(context.getPackageName()); |
| sDelegate.sendBroadcast( |
| context, createAddToHomeIntent(url, userTitle, icon, shortcutIntent)); |
| |
| if (isWebappCapable) { |
| // Store the webapp data so that it is accessible without the intent. Once this process |
| // is complete, call back to native code to start the splash image download. |
| WebappRegistry.registerWebapp(context, id, |
| new WebappRegistry.FetchWebappDataStorageCallback() { |
| @Override |
| public void onWebappDataStorageRetrieved(WebappDataStorage storage) { |
| storage.updateFromShortcutIntent(shortcutIntent); |
| nativeOnWebappDataStored(callbackPointer); |
| } |
| } |
| ); |
| } |
| |
| // Alert the user about adding the shortcut. |
| Handler handler = new Handler(Looper.getMainLooper()); |
| handler.post(new Runnable() { |
| @Override |
| public void run() { |
| Context applicationContext = ContextUtils.getApplicationContext(); |
| String toastText = |
| applicationContext.getString(R.string.added_to_homescreen, userTitle); |
| Toast toast = Toast.makeText(applicationContext, toastText, Toast.LENGTH_SHORT); |
| toast.show(); |
| } |
| }); |
| } |
| |
| /** |
| * Creates a storage location and stores the data for a web app using {@link WebappDataStorage}. |
| * @param context Context to open the WebappDataStorage with. |
| * @param id ID of the webapp which is storing data. |
| * @param splashImage Image which should be displayed on the splash screen of |
| * the webapp. This can be null of there is no image to show. |
| */ |
| @SuppressWarnings("unused") |
| @CalledByNative |
| private static void storeWebappSplashImage(final Context context, final String id, |
| final Bitmap splashImage) { |
| WebappRegistry.getWebappDataStorage(context, id, |
| new WebappRegistry.FetchWebappDataStorageCallback() { |
| @Override |
| public void onWebappDataStorageRetrieved(WebappDataStorage storage) { |
| if (storage == null) return; |
| |
| storage.updateSplashScreenImage(splashImage); |
| } |
| |
| } |
| ); |
| } |
| |
| /** |
| * Creates an intent that will add a shortcut to the home screen. |
| * @param shortcutIntent Intent to fire when the shortcut is activated. |
| * @param url URL of the shortcut. |
| * @param title Title of the shortcut. |
| * @param icon Image that represents the shortcut. |
| * @return Intent for the shortcut. |
| */ |
| public static Intent createAddToHomeIntent(String url, String title, |
| Bitmap icon, Intent shortcutIntent) { |
| Intent i = new Intent(INSTALL_SHORTCUT); |
| i.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent); |
| i.putExtra(Intent.EXTRA_SHORTCUT_NAME, title); |
| i.putExtra(Intent.EXTRA_SHORTCUT_ICON, icon); |
| return i; |
| } |
| |
| /** |
| * Creates an intent that will add a shortcut to the home screen. |
| * @param url Url of the shortcut. |
| * @param title Title of the shortcut. |
| * @param icon Image that represents the shortcut. |
| * @return Intent for the shortcut. |
| */ |
| public static Intent createAddToHomeIntent(String url, String title, Bitmap icon) { |
| Intent shortcutIntent = createShortcutIntent(url); |
| return createAddToHomeIntent(url, title, icon, shortcutIntent); |
| } |
| |
| /** |
| * Creates a shortcut to launch a web app on the home screen. |
| * @param id Id of the web app. |
| * @param action Intent action to open a full screen activity. |
| * @param url Url of the web app. |
| * @param scope Url scope of the web app. |
| * @param name Name of the web app. |
| * @param shortName Short name of the web app. |
| * @param icon Icon of the web app. |
| * @param version Version number of the shortcut. |
| * @param displayMode Display mode of the web app. |
| * @param orientation Orientation of the web app. |
| * @param themeColor Theme color of the web app. |
| * @param backgroundColor Background color of the web app. |
| * @param isIconGenerated True if the icon is generated by Chromium. |
| * @return Intent for onclick action of the shortcut. |
| */ |
| public static Intent createWebappShortcutIntent(String id, String action, String url, |
| String scope, String name, String shortName, Bitmap icon, int version, int displayMode, |
| int orientation, long themeColor, long backgroundColor, boolean isIconGenerated) { |
| // Encode the icon as a base64 string (Launcher drops Bitmaps in the Intent). |
| String encodedIcon = encodeBitmapAsString(icon); |
| |
| // Create an intent as a launcher icon for a full-screen Activity. |
| Intent shortcutIntent = new Intent(); |
| shortcutIntent.setAction(action) |
| .putExtra(EXTRA_ID, id) |
| .putExtra(EXTRA_URL, url) |
| .putExtra(EXTRA_SCOPE, scope) |
| .putExtra(EXTRA_NAME, name) |
| .putExtra(EXTRA_SHORT_NAME, shortName) |
| .putExtra(EXTRA_ICON, encodedIcon) |
| .putExtra(EXTRA_VERSION, version) |
| .putExtra(EXTRA_DISPLAY_MODE, displayMode) |
| .putExtra(EXTRA_ORIENTATION, orientation) |
| .putExtra(EXTRA_THEME_COLOR, themeColor) |
| .putExtra(EXTRA_BACKGROUND_COLOR, backgroundColor) |
| .putExtra(EXTRA_IS_ICON_GENERATED, isIconGenerated); |
| return shortcutIntent; |
| } |
| |
| /** |
| * Shortcut intent for icon on home screen. |
| * @param url Url of the shortcut. |
| * @return Intent for onclick action of the shortcut. |
| */ |
| public static Intent createShortcutIntent(String url) { |
| Intent shortcutIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); |
| shortcutIntent.putExtra(REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB, true); |
| return shortcutIntent; |
| } |
| |
| /** |
| * Utility method to check if a shortcut can be added to the home screen. |
| * @param context Context used to get the package manager. |
| * @return if a shortcut can be added to the home screen under the current profile. |
| */ |
| public static boolean isAddToHomeIntentSupported(Context context) { |
| PackageManager pm = context.getPackageManager(); |
| Intent i = new Intent(INSTALL_SHORTCUT); |
| List<ResolveInfo> receivers = pm.queryBroadcastReceivers( |
| i, PackageManager.GET_INTENT_FILTERS); |
| return !receivers.isEmpty(); |
| } |
| |
| /** |
| * Returns whether the given icon matches the size requirements to be used on the home screen. |
| * @param context Context used to create the intent. |
| * @param width Icon width, in pixels. |
| * @param height Icon height, in pixels. |
| * @return whether the given icon matches the size requirements to be used on the home screen. |
| */ |
| @CalledByNative |
| public static boolean isIconLargeEnoughForLauncher(Context context, int width, int height) { |
| ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); |
| final int minimalSize = am.getLauncherLargeIconSize() / 2; |
| return width >= minimalSize && height >= minimalSize; |
| } |
| |
| /** |
| * Adapts a website's icon (e.g. favicon or touch icon) to the Material design style guidelines |
| * for home screen icons. This involves adding some padding and rounding the corners. |
| * |
| * @param context Context used to create the intent. |
| * @param webIcon The website's favicon or touch icon. |
| * @return Bitmap Either the touch-icon or the newly created favicon. |
| */ |
| @CalledByNative |
| public static Bitmap createHomeScreenIconFromWebIcon(Context context, Bitmap webIcon) { |
| // getLauncherLargeIconSize() is just a guess at the launcher icon size, and is often |
| // wrong -- the launcher can show icons at any size it pleases. Instead of resizing the |
| // icon to the supposed launcher size and then having the launcher resize the icon again, |
| // just leave the icon at its original size and let the launcher do a single rescaling. |
| // Unless the icon is much too big; then scale it down here too. |
| ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); |
| int maxInnerSize = Math.round(am.getLauncherLargeIconSize() * MAX_INNER_SIZE_RATIO); |
| int innerSize = Math.min(maxInnerSize, Math.max(webIcon.getWidth(), webIcon.getHeight())); |
| int padding = Math.round(ICON_PADDING_RATIO * innerSize); |
| int outerSize = innerSize + 2 * padding; |
| |
| Bitmap bitmap = null; |
| try { |
| bitmap = Bitmap.createBitmap(outerSize, outerSize, Bitmap.Config.ARGB_8888); |
| } catch (OutOfMemoryError e) { |
| Log.w(TAG, "OutOfMemoryError while creating bitmap for home screen icon."); |
| return webIcon; |
| } |
| |
| // Draw the web icon with padding around it. |
| Canvas canvas = new Canvas(bitmap); |
| Rect innerBounds = new Rect(padding, padding, outerSize - padding, outerSize - padding); |
| Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| paint.setFilterBitmap(true); |
| canvas.drawBitmap(webIcon, null, innerBounds, paint); |
| |
| // Round the corners. |
| int cornerRadius = Math.round(ICON_CORNER_RADIUS_RATIO * outerSize); |
| Path path = new Path(); |
| path.setFillType(Path.FillType.INVERSE_WINDING); |
| RectF innerBoundsF = new RectF(innerBounds); |
| path.addRoundRect(innerBoundsF, cornerRadius, cornerRadius, Path.Direction.CW); |
| paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); |
| canvas.drawPath(path, paint); |
| |
| return bitmap; |
| } |
| |
| /** |
| * Generates a generic icon to be used in the launcher. This is just a rounded rectangle with |
| * a letter in the middle taken from the website's domain name. |
| * |
| * @param context Context used to create the intent. |
| * @param url URL of the shortcut. |
| * @param red Red component of the dominant icon color. |
| * @param green Green component of the dominant icon color. |
| * @param blue Blue component of the dominant icon color. |
| * @return Bitmap Either the touch-icon or the newly created favicon. |
| */ |
| @CalledByNative |
| public static Bitmap generateHomeScreenIcon(Context context, String url, int red, int green, |
| int blue) { |
| ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); |
| final int outerSize = am.getLauncherLargeIconSize(); |
| final int iconDensity = am.getLauncherLargeIconDensity(); |
| |
| Bitmap bitmap = null; |
| try { |
| bitmap = Bitmap.createBitmap(outerSize, outerSize, Bitmap.Config.ARGB_8888); |
| } catch (OutOfMemoryError e) { |
| Log.w(TAG, "OutOfMemoryError while trying to draw bitmap on canvas."); |
| return null; |
| } |
| |
| Canvas canvas = new Canvas(bitmap); |
| |
| // Draw the drop shadow. |
| int padding = (int) (GENERATED_ICON_PADDING_RATIO * outerSize); |
| Rect outerBounds = new Rect(0, 0, outerSize, outerSize); |
| Bitmap iconShadow = |
| getBitmapFromResourceId(context, R.mipmap.shortcut_icon_shadow, iconDensity); |
| Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG); |
| canvas.drawBitmap(iconShadow, null, outerBounds, paint); |
| |
| // Draw the rounded rectangle and letter. |
| int innerSize = outerSize - 2 * padding; |
| int cornerRadius = Math.round(ICON_CORNER_RADIUS_RATIO * outerSize); |
| int fontSize = Math.round(GENERATED_ICON_FONT_SIZE_RATIO * outerSize); |
| int color = Color.rgb(red, green, blue); |
| RoundedIconGenerator generator = new RoundedIconGenerator( |
| innerSize, innerSize, cornerRadius, color, fontSize); |
| Bitmap icon = generator.generateIconForUrl(url); |
| if (icon == null) return null; // Bookmark URL does not have a domain. |
| canvas.drawBitmap(icon, padding, padding, null); |
| |
| return bitmap; |
| } |
| |
| /** |
| * Compresses a bitmap into a PNG and converts into a Base64 encoded string. |
| * The encoded string can be decoded using {@link decodeBitmapFromString(String)}. |
| * @param bitmap The Bitmap to compress and encode. |
| * @return the String encoding the Bitmap. |
| */ |
| public static String encodeBitmapAsString(Bitmap bitmap) { |
| if (bitmap == null) return ""; |
| ByteArrayOutputStream output = new ByteArrayOutputStream(); |
| bitmap.compress(Bitmap.CompressFormat.PNG, 100, output); |
| return Base64.encodeToString(output.toByteArray(), Base64.DEFAULT); |
| } |
| |
| /** |
| * Decodes a Base64 string into a Bitmap. Used to decode Bitmaps encoded by |
| * {@link encodeBitmapAsString(Bitmap)}. |
| * @param encodedString the Base64 String to decode. |
| * @return the Bitmap which was encoded by the String. |
| */ |
| public static Bitmap decodeBitmapFromString(String encodedString) { |
| if (TextUtils.isEmpty(encodedString)) return null; |
| byte[] decoded = Base64.decode(encodedString, Base64.DEFAULT); |
| return BitmapFactory.decodeByteArray(decoded, 0, decoded.length); |
| } |
| |
| /** |
| * Returns the ideal size for an icon representing a web app. This size is used on app banners, |
| * the Android Home screen, and in Android's recent tasks list, among other places. |
| * @param resources Resources to retrieve the dimension from. |
| * @return the dimensions in dp which the icon should have. |
| */ |
| public static int getIdealHomescreenIconSizeInDp(Context context) { |
| return getIdealSizeFromResourceInDp(context, R.dimen.webapp_home_screen_icon_size); |
| } |
| |
| /** |
| * Returns the minimum size for an icon representing a web app. This size is used on app |
| * banners, the Android Home screen, and in Android's recent tasks list, among other places. |
| * @param resources Resources to retrieve the dimension from. |
| * @return the lower bound of the size which the icon should have in dp. |
| */ |
| public static int getMinimumHomescreenIconSizeInDp(Context context) { |
| float sizeInPx = context.getResources().getDimension(R.dimen.webapp_home_screen_icon_size); |
| float density = context.getResources().getDisplayMetrics().density; |
| float idealIconSizeInDp = sizeInPx / density; |
| |
| float minimumIconSizeInPx = idealIconSizeInDp * (density - 1); |
| return Math.round(minimumIconSizeInPx / density); |
| } |
| |
| /** |
| * Returns the ideal size for an image displayed on a web app's splash screen. |
| * @param resources Resources to retrieve the dimension from. |
| * @return the dimensions in dp which the image should have. |
| */ |
| public static int getIdealSplashImageSizeInDp(Context context) { |
| return getIdealSizeFromResourceInDp(context, R.dimen.webapp_splash_image_size_ideal); |
| } |
| |
| /** |
| * Returns the minimum size for an image displayed on a web app's splash screen. |
| * @param resources Resources to retrieve the dimension from. |
| * @return the lower bound of the size which the image should have in dp. |
| */ |
| public static int getMinimumSplashImageSizeInDp(Context context) { |
| return getIdealSizeFromResourceInDp(context, R.dimen.webapp_splash_image_size_minimum); |
| } |
| |
| /** |
| * @return String that can be used to verify that a WebappActivity is being started by Chrome. |
| */ |
| public static String getEncodedMac(Context context, String url) { |
| // The only reason we convert to a String here is because Android inexplicably eats a |
| // byte[] when adding the shortcut -- the Bundle received by the launched Activity even |
| // lacks the key for the extra. |
| byte[] mac = WebappAuthenticator.getMacForUrl(context, url); |
| return Base64.encodeToString(mac, Base64.DEFAULT); |
| } |
| |
| /** |
| * Returns the URL with all but the last component of its path removed. This serves as a proxy |
| * for scope until the scope manifest member is available. This method assumes that the URL |
| * passed in is a valid URL with a path that contains at least one "/". |
| * @param url The url to convert to a scope. |
| * @return The scope. |
| */ |
| public static String getScopeFromUrl(String url) { |
| Uri uri = Uri.parse(url); |
| List<String> path = uri.getPathSegments(); |
| int endIndex = path.size(); |
| |
| // If there is at least one path element, remove the last one. |
| if (endIndex > 0) { |
| endIndex -= 1; |
| } |
| |
| // Make sure the path starts and ends with a slash (or is only a slash if there is no path). |
| Uri.Builder builder = uri.buildUpon(); |
| String scope_path = "/" + TextUtils.join("/", path.subList(0, endIndex)); |
| if (scope_path.length() > 1) { |
| scope_path += "/"; |
| } |
| builder.path(scope_path); |
| |
| // Clear out the query and fragment. |
| builder.fragment(""); |
| builder.query(""); |
| return builder.build().toString(); |
| } |
| |
| /** |
| * Returns an array of sizes which describe the ideal size and minimum size of the Home screen |
| * icon and the ideal and minimum sizes of the splash screen image in that order. |
| */ |
| @CalledByNative |
| private static int[] getHomeScreenIconAndSplashImageSizes(Context context) { |
| // This ordering must be kept up to date with the C++ ShortcutHelper. |
| return new int[] { |
| getIdealHomescreenIconSizeInDp(context), |
| getMinimumHomescreenIconSizeInDp(context), |
| getIdealSplashImageSizeInDp(context), |
| getMinimumSplashImageSizeInDp(context) |
| }; |
| } |
| |
| private static int getIdealSizeFromResourceInDp(Context context, int resource) { |
| float sizeInPx = context.getResources().getDimension(resource); |
| float density = context.getResources().getDisplayMetrics().density; |
| return Math.round(sizeInPx / density); |
| } |
| |
| private static Bitmap getBitmapFromResourceId(Context context, int id, int density) { |
| Drawable drawable = ApiCompatibilityUtils.getDrawableForDensity( |
| context.getResources(), id, density); |
| |
| if (drawable instanceof BitmapDrawable) { |
| BitmapDrawable bd = (BitmapDrawable) drawable; |
| return bd.getBitmap(); |
| } |
| assert false : "The drawable was not a bitmap drawable as expected"; |
| return null; |
| } |
| |
| private static native void nativeOnWebappDataStored(long callbackPointer); |
| } |
