| 1 | // Copyright (c) 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 | |
| 5 | package org.chromium.chrome.browser; |
| 6 | |
| 7 | import android.app.ActivityManager; |
| 8 | import android.content.Context; |
| 9 | import android.content.Intent; |
| 10 | import android.graphics.Bitmap; |
| 11 | import android.graphics.Canvas; |
| 12 | import android.graphics.Color; |
| 13 | import android.graphics.Paint; |
| 14 | import android.graphics.Path; |
| 15 | import android.graphics.PorterDuff; |
| 16 | import android.graphics.PorterDuffColorFilter; |
| 17 | import android.graphics.PorterDuffXfermode; |
| 18 | import android.graphics.Rect; |
| 19 | import android.graphics.RectF; |
| 20 | import android.graphics.drawable.BitmapDrawable; |
| 21 | import android.graphics.drawable.Drawable; |
| 22 | import android.net.Uri; |
| 23 | import android.os.Build; |
| 24 | import android.util.Log; |
| 25 | import android.util.TypedValue; |
| 26 | |
| 27 | import org.chromium.chrome.R; |
| 28 | |
| 29 | /** |
| 30 | * Util class for bookmarks. |
| 31 | */ |
| 32 | public class BookmarkUtils { |
| 33 | |
| 34 | // There is no public string defining this intent so if Home changes the value, we |
| 35 | // have to update this string. |
| 36 | private static final String INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT"; |
| 37 | private static final int DEFAULT_RGB_VALUE = 145; |
| 38 | private static final String TAG = "BookmarkUtils"; |
| 39 | public static final String REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB = |
| 40 | "REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB"; |
| 41 | private static final int INSET_DIMENSION_FOR_TOUCHICON = 1; |
| 42 | private static final int TOUCHICON_BORDER_RADII = 10; |
| 43 | |
| 44 | /** |
| 45 | * Creates an intent that will add a shortcut to the home screen. |
| 46 | * @param context Context used to create the intent. |
| 47 | * @param shortcutIntent Intent to fire when the shortcut is activated. |
| 48 | * @param title Title of the bookmark. |
| 49 | * @param favicon Bookmark favicon. |
| 50 | * @param rValue Red component of the dominant favicon color. |
| 51 | * @param gValue Green component of the dominant favicon color. |
| 52 | * @param bValue Blue component of the dominant favicon color. |
| 53 | * @return Intent for the shortcut. |
| 54 | */ |
| 55 | public static Intent createAddToHomeIntent(Context context, Intent shortcutIntent, String title, |
| 56 | Bitmap favicon, int rValue, int gValue, int bValue) { |
| 57 | Intent i = new Intent(INSTALL_SHORTCUT); |
| 58 | i.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent); |
| 59 | i.putExtra(Intent.EXTRA_SHORTCUT_NAME, title); |
| 60 | i.putExtra(Intent.EXTRA_SHORTCUT_ICON, createIcon(context, favicon, rValue, |
| 61 | gValue, bValue)); |
| 62 | return i; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Creates an intent that will add a shortcut to the home screen. |
| 67 | * @param context Context used to create the intent. |
| 68 | * @param url Url of the bookmark. |
| 69 | * @param title Title of the bookmark. |
| 70 | * @param favicon Bookmark favicon. |
| 71 | * @param rValue Red component of the dominant favicon color. |
| 72 | * @param gValue Green component of the dominant favicon color. |
| 73 | * @param bValue Blue component of the dominant favicon color. |
| 74 | * @return Intent for the shortcut. |
| 75 | */ |
| 76 | public static Intent createAddToHomeIntent(Context context, String url, String title, |
| 77 | Bitmap favicon, int rValue, int gValue, int bValue) { |
| 78 | Intent shortcutIntent = createShortcutIntent(context, url); |
| 79 | return createAddToHomeIntent( |
| 80 | context, shortcutIntent, title, favicon, rValue, gValue, bValue); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Shortcut intent for icon on homescreen. |
| 85 | * @param context Context used to create the intent. |
| 86 | * @param url Url of the bookmark. |
| 87 | * @return Intent for onclick action of the shortcut. |
| 88 | */ |
| 89 | private static Intent createShortcutIntent(Context context, String url) { |
| 90 | Intent shortcutIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); |
| 91 | shortcutIntent.putExtra(REUSE_URL_MATCHING_TAB_ELSE_NEW_TAB, true); |
| 92 | return shortcutIntent; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Creates an icon to be associated with this bookmark. If available, the touch icon |
| 97 | * will be used, else we draw our own. |
| 98 | * @param context Context used to create the intent. |
| 99 | * @param favicon Bookmark favicon bitmap. |
| 100 | * @param rValue Red component of the dominant favicon color. |
| 101 | * @param gValue Green component of the dominant favicon color. |
| 102 | * @param bValue Blue component of the dominant favicon color. |
| 103 | * @return Bitmap Either the touch-icon or the newly created favicon. |
| 104 | */ |
| 105 | private static Bitmap createIcon(Context context, Bitmap favicon, int rValue, |
| 106 | int gValue, int bValue) { |
| 107 | Bitmap bitmap = null; |
| 108 | ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); |
| 109 | final int iconSize = am.getLauncherLargeIconSize(); |
| 110 | final int iconDensity = am.getLauncherLargeIconDensity(); |
| 111 | try { |
| 112 | bitmap = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); |
| 113 | Canvas canvas = new Canvas(bitmap); |
| 114 | if (favicon == null) { |
| 115 | favicon = getBitmapFromResourceId(context, R.drawable.globe_favicon, iconDensity); |
| 116 | rValue = gValue = bValue = DEFAULT_RGB_VALUE; |
| 117 | } |
| 118 | final int smallestSide = iconSize; |
| 119 | if (favicon.getWidth() >= smallestSide / 2 && favicon.getHeight() >= smallestSide / 2) { |
| 120 | drawTouchIconToCanvas(context, favicon, canvas); |
| 121 | } else { |
| 122 | drawWidgetBackgroundToCanvas(context, canvas, iconDensity, |
| 123 | Color.rgb(rValue, gValue, bValue)); |
| 124 | drawFaviconToCanvas(context, favicon, canvas); |
| 125 | } |
| 126 | canvas.setBitmap(null); |
| 127 | } catch (OutOfMemoryError e) { |
| 128 | Log.w(TAG, "OutOfMemoryError while trying to draw bitmap on canvas."); |
| 129 | } |
| 130 | return bitmap; |
| 131 | } |
| 132 | |
| 133 | private static Bitmap getBitmapFromResourceId(Context context, int id, int density) { |
| 134 | Drawable drawable = null; |
| 135 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) { |
| 136 | drawable = context.getResources().getDrawableForDensity(id, density); |
| 137 | } else { |
| 138 | drawable = context.getResources().getDrawable(id); |
| 139 | } |
| 140 | |
| 141 | if (drawable instanceof BitmapDrawable) { |
| 142 | BitmapDrawable bd = (BitmapDrawable) drawable; |
| 143 | return bd.getBitmap(); |
| 144 | } |
| 145 | assert false : "The drawable was not a bitmap drawable as expected"; |
| 146 | return null; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Use touch-icon or higher-resolution favicon and round the corners. |
| 151 | * @param context Context used to get resources. |
| 152 | * @param touchIcon Touch icon bitmap. |
| 153 | * @param canvas Canvas that holds the touch icon. |
| 154 | */ |
| 155 | private static void drawTouchIconToCanvas( |
| 156 | Context context, Bitmap touchIcon, Canvas canvas) { |
| 157 | Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight()); |
| 158 | Rect src = new Rect(0, 0, touchIcon.getWidth(), touchIcon.getHeight()); |
| 159 | Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| 160 | paint.setFilterBitmap(true); |
| 161 | canvas.drawBitmap(touchIcon, src, iconBounds, paint); |
| 162 | // Convert dp to px. |
| 163 | int borderRadii = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, |
| 164 | TOUCHICON_BORDER_RADII, context.getResources().getDisplayMetrics()); |
| 165 | Path path = new Path(); |
| 166 | path.setFillType(Path.FillType.INVERSE_WINDING); |
| 167 | RectF rect = new RectF(iconBounds); |
| 168 | rect.inset(INSET_DIMENSION_FOR_TOUCHICON, INSET_DIMENSION_FOR_TOUCHICON); |
| 169 | path.addRoundRect(rect, borderRadii, borderRadii, Path.Direction.CW); |
| 170 | paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); |
| 171 | canvas.drawPath(path, paint); |
| 172 | } |
| 173 | |
| 174 | /** |
| 175 | * Draw the favicon with dominant color. |
| 176 | * @param context Context used to create the intent. |
| 177 | * @param favicon favicon bitmap. |
| 178 | * @param canvas Canvas that holds the favicon. |
| 179 | */ |
| 180 | private static void drawFaviconToCanvas(Context context, Bitmap favicon, Canvas canvas) { |
| 181 | Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight()); |
| 182 | int faviconSize = iconBounds.width() / 3; |
| 183 | Bitmap scaledFavicon = Bitmap.createScaledBitmap(favicon, faviconSize, faviconSize, true); |
| 184 | canvas.drawBitmap(scaledFavicon, |
| 185 | iconBounds.exactCenterX() - scaledFavicon.getWidth() / 2.0f, |
| 186 | iconBounds.exactCenterY() - scaledFavicon.getHeight() / 2.0f, null); |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Draw document icon to canvas. |
| 191 | * @param context Context used to get bitmap resources. |
| 192 | * @param canvas Canvas that holds the document icon. |
| 193 | * @param iconDensity Density information to get bitmap resources. |
| 194 | * @param color Color for the document icon's folding and the bottom strip. |
| 195 | */ |
| 196 | private static void drawWidgetBackgroundToCanvas( |
| 197 | Context context, Canvas canvas, int iconDensity, int color) { |
| 198 | Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight()); |
| 199 | Bitmap bookmark_widget_bg = |
| 200 | getBitmapFromResourceId(context, R.mipmap.bookmark_widget_bg, iconDensity); |
| 201 | Bitmap bookmark_widget_bg_highlights = getBitmapFromResourceId(context, |
| 202 | R.mipmap.bookmark_widget_bg_highlights, iconDensity); |
| 203 | if (bookmark_widget_bg == null || bookmark_widget_bg_highlights == null) { |
| 204 | Log.w(TAG, "Can't load R.mipmap.bookmark_widget_bg or " + |
| 205 | "R.mipmap.bookmark_widget_bg_highlights."); |
| 206 | return; |
| 207 | } |
| 208 | Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG); |
| 209 | canvas.drawBitmap(bookmark_widget_bg, null, iconBounds, paint); |
| 210 | |
| 211 | // The following color filter will convert bookmark_widget_bg_highlights' white color to |
| 212 | // the 'color' variable when it is painted to 'canvas'. |
| 213 | paint.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.SRC_IN)); |
| 214 | canvas.drawBitmap(bookmark_widget_bg_highlights, null, iconBounds, paint); |
| 215 | } |
| 216 | } |