Refactor ShortcutHelper and merge in BookmarkUtils

chrome/android/java/src/org/chromium/chrome/browser/BookmarkUtils.java

-// Copyright 2012 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.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.util.DisplayMetrics;
-import android.util.Log;
-import android.util.TypedValue;
-
-import org.chromium.base.ApiCompatibilityUtils;
-import org.chromium.chrome.R;
-import org.chromium.chrome.browser.widget.RoundedIconGenerator;
-
-import java.util.List;
-
-/**
- * Util class for bookmarks.
- */
-public class BookmarkUtils {
-    // 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";
-    private static final int DEFAULT_RGB_VALUE = 145;
-    private static final String TAG = "BookmarkUtils";
-    public static final String REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB =
-            "REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB";
-    private static final int INSET_DIMENSION_FOR_TOUCHICON = 1;
-    private static final int TOUCHICON_BORDER_RADII_DP = 4;
-    private static final int GENERATED_ICON_SIZE_DP = 40;
-    private static final int GENERATED_ICON_ROUNDED_CORNERS_DP = 2;
-    private static final int GENERATED_ICON_FONT_SIZE_DP = 16;
-
-    /**
-     * Creates an intent that will add a shortcut to the home screen.
-     * @param shortcutIntent Intent to fire when the shortcut is activated.
-     * @param title Title of the bookmark.
-     * @param icon Image that represents the bookmark.
-     * @param url URL of the bookmark.
-     * @return Intent for the shortcut.
-     */
-    public static Intent createAddToHomeIntent(
-            Intent shortcutIntent, String title, Bitmap icon, String url) {
-        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 bookmark.
-     * @param title Title of the bookmark.
-     * @param icon Image that represents the bookmark.
-     * @return Intent for the shortcut.
-     */
-    public static Intent createAddToHomeIntent(String url, String title, Bitmap icon) {
-        Intent shortcutIntent = createShortcutIntent(url);
-        return createAddToHomeIntent(shortcutIntent, title, icon, url);
-    }
-
-    /**
-     * Shortcut intent for icon on homescreen.
-     * @param url Url of the bookmark.
-     * @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 homescreen.
-     * @param context Context used to get the package manager.
-     * @return if a shortcut can be added to the homescreen 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();
-    }
-
-    /**
-     * Creates an icon to be associated with this bookmark. If available, the touch icon
-     * will be used, else we draw our own.
-     * @param context Context used to create the intent.
-     * @param icon Image representing the bookmark.
-     * @param url URL of the bookmark.
-     * @param rValue Red component of the dominant icon color.
-     * @param gValue Green component of the dominant icon color.
-     * @param bValue Blue component of the dominant icon color.
-     * @return Bitmap Either the touch-icon or the newly created favicon.
-     */
-    public static Bitmap createLauncherIcon(Context context, Bitmap icon, String url, int rValue,
-            int gValue, int bValue) {
-        Bitmap bitmap = null;
-        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
-        final int iconSize = am.getLauncherLargeIconSize();
-        final int iconDensity = am.getLauncherLargeIconDensity();
-        try {
-            bitmap = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888);
-            Canvas canvas = new Canvas(bitmap);
-            if (icon == null) {
-                icon = getBitmapFromResourceId(context, R.drawable.globe_favicon, iconDensity);
-                rValue = gValue = bValue = DEFAULT_RGB_VALUE;
-            }
-            final int smallestSide = iconSize;
-            if (icon.getWidth() >= smallestSide / 2 && icon.getHeight() >= smallestSide / 2) {
-                drawTouchIconToCanvas(context, icon, canvas);
-            } else {
-                drawWidgetBackgroundToCanvas(context, canvas, iconDensity, url,
-                        Color.rgb(rValue, gValue, bValue));
-            }
-            canvas.setBitmap(null);
-        } catch (OutOfMemoryError e) {
-            Log.w(TAG, "OutOfMemoryError while trying to draw bitmap on canvas.");
-        }
-        return bitmap;
-    }
-
-    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;
-    }
-
-    /**
-     * Use touch-icon or higher-resolution favicon and round the corners.
-     * @param context    Context used to get resources.
-     * @param touchIcon  Touch icon bitmap.
-     * @param canvas     Canvas that holds the touch icon.
-     */
-    private static void drawTouchIconToCanvas(Context context, Bitmap touchIcon, Canvas canvas) {
-        Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
-        Rect src = new Rect(0, 0, touchIcon.getWidth(), touchIcon.getHeight());
-        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
-        paint.setFilterBitmap(true);
-        canvas.drawBitmap(touchIcon, src, iconBounds, paint);
-        // Convert dp to px.
-        int borderRadii = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
-                TOUCHICON_BORDER_RADII_DP, context.getResources().getDisplayMetrics());
-        Path path = new Path();
-        path.setFillType(Path.FillType.INVERSE_WINDING);
-        RectF rect = new RectF(iconBounds);
-        rect.inset(INSET_DIMENSION_FOR_TOUCHICON, INSET_DIMENSION_FOR_TOUCHICON);
-        path.addRoundRect(rect, borderRadii, borderRadii, Path.Direction.CW);
-        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
-        canvas.drawPath(path, paint);
-    }
-
-    /**
-     * Draw document icon to canvas.
-     * @param context     Context used to get bitmap resources.
-     * @param canvas      Canvas that holds the document icon.
-     * @param iconDensity Density information to get bitmap resources.
-     * @param url         URL of the bookmark.
-     * @param color       Color for the document icon's folding and the bottom strip.
-     */
-    private static void drawWidgetBackgroundToCanvas(
-            Context context, Canvas canvas, int iconDensity, String url, int color) {
-        Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
-        Bitmap bookmarkWidgetBg =
-                getBitmapFromResourceId(context, R.mipmap.bookmark_widget_bg, iconDensity);
-
-        Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG);
-        canvas.drawBitmap(bookmarkWidgetBg, null, iconBounds, paint);
-
-        float density = (float) iconDensity / DisplayMetrics.DENSITY_MEDIUM;
-        int iconSize = (int) (GENERATED_ICON_SIZE_DP * density);
-        int iconRoundedEdge = (int) (GENERATED_ICON_ROUNDED_CORNERS_DP * density);
-        int iconFontSize = (int) (GENERATED_ICON_FONT_SIZE_DP * density);
-
-        RoundedIconGenerator generator = new RoundedIconGenerator(
-                iconSize, iconSize, iconRoundedEdge, color, iconFontSize);
-        Bitmap icon = generator.generateIconForUrl(url);
-        if (icon == null) return; // Bookmark URL does not have a domain.
-        canvas.drawBitmap(icon, iconBounds.exactCenterX() - icon.getWidth() / 2.0f,
-                iconBounds.exactCenterY() - icon.getHeight() / 2.0f, null);
-    }
-}