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. 4 5package org.chromium.chrome.browser; 6 7import android.app.ActivityManager; 8import android.content.Context; 9import android.content.Intent; 10import android.content.pm.PackageManager; 11import android.content.pm.ResolveInfo; 12import android.graphics.Bitmap; 13import android.graphics.Canvas; 14import android.graphics.Color; 15import android.graphics.Paint; 16import android.graphics.Path; 17import android.graphics.PorterDuff; 18import android.graphics.PorterDuffColorFilter; 19import android.graphics.PorterDuffXfermode; 20import android.graphics.Rect; 21import android.graphics.RectF; 22import android.graphics.drawable.BitmapDrawable; 23import android.graphics.drawable.Drawable; 24import android.net.Uri; 25import android.os.Build; 26import android.util.Log; 27import android.util.TypedValue; 28 29import org.chromium.chrome.R; 30 31import java.util.List; 32 33/** 34 * Util class for bookmarks. 35 */ 36public class BookmarkUtils { 37 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; 47 48 /** 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. 58 */ 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, 65 gValue, bValue)); 66 return i; 67 } 68 69 /** 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. 79 */ 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); 85 } 86 87 /** 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. 92 */ 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; 97 } 98 99 /** 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. 103 */ 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(); 110 } 111 112 /** 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. 121 */ 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(); 128 try { 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; 134 } 135 final int smallestSide = iconSize; 136 if (favicon.getWidth() >= smallestSide / 2 && favicon.getHeight() >= smallestSide / 2) { 137 drawTouchIconToCanvas(context, favicon, canvas); 138 } else { 139 drawWidgetBackgroundToCanvas(context, canvas, iconDensity, 140 Color.rgb(rValue, gValue, bValue)); 141 drawFaviconToCanvas(context, favicon, canvas); 142 } 143 canvas.setBitmap(null); 144 } catch (OutOfMemoryError e) { 145 Log.w(TAG, "OutOfMemoryError while trying to draw bitmap on canvas."); 146 } 147 return bitmap; 148 } 149 150 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); 154 } else { 155 drawable = context.getResources().getDrawable(id); 156 } 157 158 if (drawable instanceof BitmapDrawable) { 159 BitmapDrawable bd = (BitmapDrawable) drawable; 160 return bd.getBitmap(); 161 } 162 assert false : "The drawable was not a bitmap drawable as expected"; 163 return null; 164 } 165 166 /** 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. 171 */ 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); 179 // Convert dp to px. 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); 189 } 190 191 /** 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. 196 */ 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); 204 } 205 206 /** 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. 212 */ 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."); 223 return; 224 } 225 Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG); 226 canvas.drawBitmap(bookmarkWidgetBg, null, iconBounds, paint); 227 228 // 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); 232 } 233} 234