1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.browser; 18 19 import android.app.ActivityManager; 20 import android.app.AlertDialog; 21 import android.content.ContentUris; 22 import android.content.Context; 23 import android.content.DialogInterface; 24 import android.content.Intent; 25 import android.content.res.Resources; 26 import android.graphics.Bitmap; 27 import android.graphics.Canvas; 28 import android.graphics.Color; 29 import android.graphics.Paint; 30 import android.graphics.Path; 31 import android.graphics.PorterDuff; 32 import android.graphics.PorterDuffXfermode; 33 import android.graphics.Rect; 34 import android.graphics.RectF; 35 import android.graphics.drawable.BitmapDrawable; 36 import android.graphics.drawable.Drawable; 37 import android.graphics.drawable.PaintDrawable; 38 import android.net.Uri; 39 import android.os.Message; 40 import android.provider.Browser; 41 import android.provider.BrowserContract; 42 43 public class BookmarkUtils { 44 private final static String LOGTAG = "BookmarkUtils"; 45 46 // XXX: There is no public string defining this intent so if Home changes the value, we 47 // have to update this string. 48 private static final String INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT"; 49 50 enum BookmarkIconType { 51 ICON_INSTALLABLE_WEB_APP, // Icon for an installable web app (launches WebAppRuntime). 52 ICON_HOME_SHORTCUT, // Icon for a shortcut on the home screen (launches Browser). 53 ICON_WIDGET, 54 } 55 56 /** 57 * Creates an icon to be associated with this bookmark. If available, the apple touch icon 58 * will be used, else we draw our own depending on the type of "bookmark" being created. 59 */ 60 static Bitmap createIcon(Context context, Bitmap touchIcon, Bitmap favicon, 61 BookmarkIconType type) { 62 final ActivityManager am = (ActivityManager) context 63 .getSystemService(Context.ACTIVITY_SERVICE); 64 final int iconDimension = am.getLauncherLargeIconSize(); 65 final int iconDensity = am.getLauncherLargeIconDensity(); 66 return createIcon(context, touchIcon, favicon, type, iconDimension, iconDensity); 67 } 68 69 static Drawable createListFaviconBackground(Context context) { 70 PaintDrawable faviconBackground = new PaintDrawable(); 71 Resources res = context.getResources(); 72 int padding = res.getDimensionPixelSize(R.dimen.list_favicon_padding); 73 faviconBackground.setPadding(padding, padding, padding, padding); 74 faviconBackground.getPaint().setColor(context.getResources() 75 .getColor(R.color.bookmarkListFaviconBackground)); 76 faviconBackground.setCornerRadius( 77 res.getDimension(R.dimen.list_favicon_corner_radius)); 78 return faviconBackground; 79 } 80 81 private static Bitmap createIcon(Context context, Bitmap touchIcon, 82 Bitmap favicon, BookmarkIconType type, int iconDimension, int iconDensity) { 83 Bitmap bm = Bitmap.createBitmap(iconDimension, iconDimension, Bitmap.Config.ARGB_8888); 84 Canvas canvas = new Canvas(bm); 85 Rect iconBounds = new Rect(0, 0, bm.getWidth(), bm.getHeight()); 86 87 // Use the apple-touch-icon if available 88 if (touchIcon != null) { 89 drawTouchIconToCanvas(touchIcon, canvas, iconBounds); 90 } else { 91 // No touch icon so create our own. 92 // Set the background based on the type of shortcut (either webapp or home shortcut). 93 Bitmap icon = getIconBackground(context, type, iconDensity); 94 95 if (icon != null) { 96 // Now draw the correct icon background into our new bitmap. 97 Paint p = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG); 98 canvas.drawBitmap(icon, null, iconBounds, p); 99 } 100 101 // If we have a favicon, overlay it in a nice rounded white box on top of the 102 // background. 103 if (favicon != null) { 104 drawFaviconToCanvas(context, favicon, canvas, iconBounds, type); 105 } 106 } 107 canvas.setBitmap(null); 108 return bm; 109 } 110 111 /** 112 * Convenience method for creating an intent that will add a shortcut to the home screen. 113 */ 114 static Intent createAddToHomeIntent(Context context, String url, String title, 115 Bitmap touchIcon, Bitmap favicon) { 116 Intent i = new Intent(INSTALL_SHORTCUT); 117 Intent shortcutIntent = createShortcutIntent(url); 118 i.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent); 119 i.putExtra(Intent.EXTRA_SHORTCUT_NAME, title); 120 i.putExtra(Intent.EXTRA_SHORTCUT_ICON, createIcon(context, touchIcon, favicon, 121 BookmarkIconType.ICON_HOME_SHORTCUT)); 122 123 // Do not allow duplicate items 124 i.putExtra("duplicate", false); 125 return i; 126 } 127 128 static Intent createShortcutIntent(String url) { 129 Intent shortcutIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 130 long urlHash = url.hashCode(); 131 long uniqueId = (urlHash << 32) | shortcutIntent.hashCode(); 132 shortcutIntent.putExtra(Browser.EXTRA_APPLICATION_ID, Long.toString(uniqueId)); 133 return shortcutIntent; 134 } 135 136 private static Bitmap getIconBackground(Context context, BookmarkIconType type, int density) { 137 if (type == BookmarkIconType.ICON_HOME_SHORTCUT) { 138 // Want to create a shortcut icon on the homescreen, so the icon 139 // background is the red bookmark. 140 Drawable drawable = context.getResources().getDrawableForDensity( 141 R.mipmap.ic_launcher_shortcut_browser_bookmark, density); 142 if (drawable instanceof BitmapDrawable) { 143 BitmapDrawable bd = (BitmapDrawable) drawable; 144 return bd.getBitmap(); 145 } 146 } else if (type == BookmarkIconType.ICON_INSTALLABLE_WEB_APP) { 147 // Use the web browser icon as the background for the icon for an installable 148 // web app. 149 Drawable drawable = context.getResources().getDrawableForDensity( 150 R.mipmap.ic_launcher_browser, density); 151 if (drawable instanceof BitmapDrawable) { 152 BitmapDrawable bd = (BitmapDrawable) drawable; 153 return bd.getBitmap(); 154 } 155 } 156 return null; 157 } 158 159 private static void drawTouchIconToCanvas(Bitmap touchIcon, Canvas canvas, Rect iconBounds) { 160 Rect src = new Rect(0, 0, touchIcon.getWidth(), touchIcon.getHeight()); 161 162 // Paint used for scaling the bitmap and drawing the rounded rect. 163 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 164 paint.setFilterBitmap(true); 165 canvas.drawBitmap(touchIcon, src, iconBounds, paint); 166 167 // Construct a path from a round rect. This will allow drawing with 168 // an inverse fill so we can punch a hole using the round rect. 169 Path path = new Path(); 170 path.setFillType(Path.FillType.INVERSE_WINDING); 171 RectF rect = new RectF(iconBounds); 172 rect.inset(1, 1); 173 path.addRoundRect(rect, 8f, 8f, Path.Direction.CW); 174 175 // Reuse the paint and clear the outside of the rectangle. 176 paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); 177 canvas.drawPath(path, paint); 178 } 179 180 private static void drawFaviconToCanvas(Context context, Bitmap favicon, 181 Canvas canvas, Rect iconBounds, BookmarkIconType type) { 182 // Make a Paint for the white background rectangle and for 183 // filtering the favicon. 184 Paint p = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG); 185 p.setStyle(Paint.Style.FILL_AND_STROKE); 186 if (type == BookmarkIconType.ICON_WIDGET) { 187 p.setColor(context.getResources() 188 .getColor(R.color.bookmarkWidgetFaviconBackground)); 189 } else { 190 p.setColor(Color.WHITE); 191 } 192 193 // Create a rectangle that is slightly wider than the favicon 194 int faviconDimension = context.getResources().getDimensionPixelSize(R.dimen.favicon_size); 195 int faviconPaddedRectDimension; 196 if (type == BookmarkIconType.ICON_WIDGET) { 197 faviconPaddedRectDimension = canvas.getWidth(); 198 } else { 199 faviconPaddedRectDimension = context.getResources().getDimensionPixelSize( 200 R.dimen.favicon_padded_size); 201 } 202 float padding = (faviconPaddedRectDimension - faviconDimension) / 2; 203 final float x = iconBounds.exactCenterX() - (faviconPaddedRectDimension / 2); 204 float y = iconBounds.exactCenterY() - (faviconPaddedRectDimension / 2); 205 if (type != BookmarkIconType.ICON_WIDGET) { 206 // Note: Subtract from the y position since the box is 207 // slightly higher than center. Use padding since it is already 208 // device independent. 209 y -= padding; 210 } 211 RectF r = new RectF(x, y, x + faviconPaddedRectDimension, y + faviconPaddedRectDimension); 212 // Draw a white rounded rectangle behind the favicon 213 canvas.drawRoundRect(r, 3, 3, p); 214 215 // Draw the favicon in the same rectangle as the rounded 216 // rectangle but inset by the padding 217 // (results in a 16x16 favicon). 218 r.inset(padding, padding); 219 canvas.drawBitmap(favicon, null, r, null); 220 } 221 222 /* package */ static Uri getBookmarksUri(Context context) { 223 return BrowserContract.Bookmarks.CONTENT_URI; 224 } 225 226 /** 227 * Show a confirmation dialog to remove a bookmark. 228 * @param id Id of the bookmark to remove 229 * @param title Title of the bookmark, to be displayed in the confirmation method. 230 * @param context Package Context for strings, dialog, ContentResolver 231 * @param msg Message to send if the bookmark is deleted. 232 */ 233 static void displayRemoveBookmarkDialog( final long id, final String title, 234 final Context context, final Message msg) { 235 236 new AlertDialog.Builder(context) 237 .setTitle(R.string.delete_bookmark) 238 .setIcon(android.R.drawable.ic_dialog_alert) 239 .setMessage(context.getString(R.string.delete_bookmark_warning, 240 title)) 241 .setPositiveButton(R.string.ok, 242 new DialogInterface.OnClickListener() { 243 @Override 244 public void onClick(DialogInterface dialog, int whichButton) { 245 if (msg != null) { 246 msg.sendToTarget(); 247 } 248 Runnable runnable = new Runnable(){ 249 @Override 250 public void run() { 251 Uri uri = ContentUris.withAppendedId( 252 BrowserContract.Bookmarks.CONTENT_URI, 253 id); 254 context.getContentResolver().delete(uri, null, null); 255 } 256 }; 257 new Thread(runnable).start(); 258 } 259 }) 260 .setNegativeButton(R.string.cancel, null) 261 .show(); 262 } 263 } 264
