1 // Copyright 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 package org.chromium.chrome.browser;
7 import android.app.ActivityManager;
8 import android.content.Context;
9 import android.content.Intent;
10 import android.content.pm.PackageManager;
11 import android.content.pm.ResolveInfo;
12 import android.graphics.Bitmap;
13 import android.graphics.Canvas;
14 import android.graphics.Color;
15 import android.graphics.Paint;
16 import android.graphics.Path;
17 import android.graphics.PorterDuff;
18 import android.graphics.PorterDuffColorFilter;
19 import android.graphics.PorterDuffXfermode;
20 import android.graphics.Rect;
21 import android.graphics.RectF;
22 import android.graphics.drawable.BitmapDrawable;
23 import android.graphics.drawable.Drawable;
24 import android.net.Uri;
25 import android.os.Build;
26 import android.util.Log;
27 import android.util.TypedValue;
29 import org.chromium.chrome.R;
31 import java.util.List;
34 * Util class for bookmarks.
36 public class BookmarkUtils {
38 // There is no public string defining this intent so if Home changes the value, we
39 // have to update this string.
40 private static final String INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT";
41 private static final int DEFAULT_RGB_VALUE = 145;
42 private static final String TAG = "BookmarkUtils";
43 public static final String REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB =
44 "REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB";
45 private static final int INSET_DIMENSION_FOR_TOUCHICON = 1;
46 private static final int TOUCHICON_BORDER_RADII = 10;
49 * Creates an intent that will add a shortcut to the home screen.
50 * @param context Context used to create the intent.
51 * @param shortcutIntent Intent to fire when the shortcut is activated.
52 * @param title Title of the bookmark.
53 * @param favicon Bookmark favicon.
54 * @param rValue Red component of the dominant favicon color.
55 * @param gValue Green component of the dominant favicon color.
56 * @param bValue Blue component of the dominant favicon color.
57 * @return Intent for the shortcut.
59 public static Intent createAddToHomeIntent(Context context, Intent shortcutIntent, String title,
60 Bitmap favicon, int rValue, int gValue, int bValue) {
61 Intent i = new Intent(INSTALL_SHORTCUT);
62 i.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
63 i.putExtra(Intent.EXTRA_SHORTCUT_NAME, title);
64 i.putExtra(Intent.EXTRA_SHORTCUT_ICON, createIcon(context, favicon, rValue,
70 * Creates an intent that will add a shortcut to the home screen.
71 * @param context Context used to create the intent.
72 * @param url Url of the bookmark.
73 * @param title Title of the bookmark.
74 * @param favicon Bookmark favicon.
75 * @param rValue Red component of the dominant favicon color.
76 * @param gValue Green component of the dominant favicon color.
77 * @param bValue Blue component of the dominant favicon color.
78 * @return Intent for the shortcut.
80 public static Intent createAddToHomeIntent(Context context, String url, String title,
81 Bitmap favicon, int rValue, int gValue, int bValue) {
82 Intent shortcutIntent = createShortcutIntent(context, url);
83 return createAddToHomeIntent(
84 context, shortcutIntent, title, favicon, rValue, gValue, bValue);
88 * Shortcut intent for icon on homescreen.
89 * @param context Context used to create the intent.
90 * @param url Url of the bookmark.
91 * @return Intent for onclick action of the shortcut.
93 public static Intent createShortcutIntent(Context context, String url) {
94 Intent shortcutIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
95 shortcutIntent.putExtra(REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB, true);
96 return shortcutIntent;
100 * Utility method to check if a shortcut can be added to the homescreen.
101 * @param context Context used to get the package manager.
102 * @return if a shortcut can be added to the homescreen under the current profile.
104 public static boolean isAddToHomeIntentSupported(Context context) {
105 PackageManager pm = context.getPackageManager();
106 Intent i = new Intent(INSTALL_SHORTCUT);
107 List<ResolveInfo> receivers = pm.queryBroadcastReceivers(
108 i, PackageManager.GET_INTENT_FILTERS);
109 return !receivers.isEmpty();
113 * Creates an icon to be associated with this bookmark. If available, the touch icon
114 * will be used, else we draw our own.
115 * @param context Context used to create the intent.
116 * @param favicon Bookmark favicon bitmap.
117 * @param rValue Red component of the dominant favicon color.
118 * @param gValue Green component of the dominant favicon color.
119 * @param bValue Blue component of the dominant favicon color.
120 * @return Bitmap Either the touch-icon or the newly created favicon.
122 private static Bitmap createIcon(Context context, Bitmap favicon, int rValue,
123 int gValue, int bValue) {
124 Bitmap bitmap = null;
125 ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
126 final int iconSize = am.getLauncherLargeIconSize();
127 final int iconDensity = am.getLauncherLargeIconDensity();
129 bitmap = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888);
130 Canvas canvas = new Canvas(bitmap);
131 if (favicon == null) {
132 favicon = getBitmapFromResourceId(context, R.drawable.globe_favicon, iconDensity);
133 rValue = gValue = bValue = DEFAULT_RGB_VALUE;
135 final int smallestSide = iconSize;
136 if (favicon.getWidth() >= smallestSide / 2 && favicon.getHeight() >= smallestSide / 2) {
137 drawTouchIconToCanvas(context, favicon, canvas);
139 drawWidgetBackgroundToCanvas(context, canvas, iconDensity,
140 Color.rgb(rValue, gValue, bValue));
141 drawFaviconToCanvas(context, favicon, canvas);
143 canvas.setBitmap(null);
144 } catch (OutOfMemoryError e) {
145 Log.w(TAG, "OutOfMemoryError while trying to draw bitmap on canvas.");
150 private static Bitmap getBitmapFromResourceId(Context context, int id, int density) {
151 Drawable drawable = null;
152 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
153 drawable = context.getResources().getDrawableForDensity(id, density);
155 drawable = context.getResources().getDrawable(id);
158 if (drawable instanceof BitmapDrawable) {
159 BitmapDrawable bd = (BitmapDrawable) drawable;
160 return bd.getBitmap();
162 assert false : "The drawable was not a bitmap drawable as expected";
167 * Use touch-icon or higher-resolution favicon and round the corners.
168 * @param context Context used to get resources.
169 * @param touchIcon Touch icon bitmap.
170 * @param canvas Canvas that holds the touch icon.
172 private static void drawTouchIconToCanvas(
173 Context context, Bitmap touchIcon, Canvas canvas) {
174 Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
175 Rect src = new Rect(0, 0, touchIcon.getWidth(), touchIcon.getHeight());
176 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
177 paint.setFilterBitmap(true);
178 canvas.drawBitmap(touchIcon, src, iconBounds, paint);
180 int borderRadii = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
181 TOUCHICON_BORDER_RADII, context.getResources().getDisplayMetrics());
182 Path path = new Path();
183 path.setFillType(Path.FillType.INVERSE_WINDING);
184 RectF rect = new RectF(iconBounds);
185 rect.inset(INSET_DIMENSION_FOR_TOUCHICON, INSET_DIMENSION_FOR_TOUCHICON);
186 path.addRoundRect(rect, borderRadii, borderRadii, Path.Direction.CW);
187 paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
188 canvas.drawPath(path, paint);
192 * Draw the favicon with dominant color.
193 * @param context Context used to create the intent.
194 * @param favicon favicon bitmap.
195 * @param canvas Canvas that holds the favicon.
197 private static void drawFaviconToCanvas(Context context, Bitmap favicon, Canvas canvas) {
198 Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
199 int faviconSize = iconBounds.width() / 3;
200 Bitmap scaledFavicon = Bitmap.createScaledBitmap(favicon, faviconSize, faviconSize, true);
201 canvas.drawBitmap(scaledFavicon,
202 iconBounds.exactCenterX() - scaledFavicon.getWidth() / 2.0f,
203 iconBounds.exactCenterY() - scaledFavicon.getHeight() / 2.0f, null);
207 * Draw document icon to canvas.
208 * @param context Context used to get bitmap resources.
209 * @param canvas Canvas that holds the document icon.
210 * @param iconDensity Density information to get bitmap resources.
211 * @param color Color for the document icon's folding and the bottom strip.
213 private static void drawWidgetBackgroundToCanvas(
214 Context context, Canvas canvas, int iconDensity, int color) {
215 Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
216 Bitmap bookmarkWidgetBg =
217 getBitmapFromResourceId(context, R.mipmap.bookmark_widget_bg, iconDensity);
218 Bitmap bookmarkWidgetBgHighlights = getBitmapFromResourceId(context,
219 R.mipmap.bookmark_widget_bg_highlights, iconDensity);
220 if (bookmarkWidgetBg == null || bookmarkWidgetBgHighlights == null) {
221 Log.w(TAG, "Can't load R.mipmap.bookmark_widget_bg or " +
222 "R.mipmap.bookmark_widget_bg_highlights.");
225 Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG);
226 canvas.drawBitmap(bookmarkWidgetBg, null, iconBounds, paint);
228 // The following color filter will convert bookmark_widget_bg_highlights' white color to
229 // the 'color' variable when it is painted to 'canvas'.
230 paint.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.SRC_IN));
231 canvas.drawBitmap(bookmarkWidgetBgHighlights, null, iconBounds, paint);