| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.email; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.graphics.Paint; |
| |
| /** |
| * Helper class to load resources. |
| */ |
| public class ResourceHelper { |
| public final static int UNDEFINED_RESOURCE_ID = -1; |
| |
| private static ResourceHelper sInstance; |
| private final Context mContext; |
| private final Resources mResources; |
| |
| private final int[] mAccountColors; |
| private final Paint[] mAccountColorPaints; |
| private final TypedArray mAccountColorArray; |
| |
| private ResourceHelper(Context context) { |
| mContext = context.getApplicationContext(); |
| mResources = mContext.getResources(); |
| |
| mAccountColorArray = mResources.obtainTypedArray(R.array.combined_view_account_colors); |
| mAccountColors = mResources.getIntArray(R.array.combined_view_account_colors); |
| mAccountColorPaints = new Paint[mAccountColors.length]; |
| for (int i = 0; i < mAccountColors.length; i++) { |
| Paint p = new Paint(); |
| p.setColor(mAccountColors[i]); |
| mAccountColorPaints[i] = p; |
| } |
| } |
| |
| public static synchronized ResourceHelper getInstance(Context context) { |
| if (sInstance == null) { |
| sInstance = new ResourceHelper(context); |
| } |
| return sInstance; |
| } |
| |
| /* package */ int getAccountColorIndex(long accountId) { |
| // The account ID is 1-based, so -1. |
| // Use abs so that it'd work for -1 as well. |
| return Math.abs((int) ((accountId - 1) % mAccountColors.length)); |
| } |
| |
| /** |
| * @return color for an account. |
| */ |
| public int getAccountColor(long accountId) { |
| return mAccountColors[getAccountColorIndex(accountId)]; |
| } |
| |
| /** |
| * @return The resource ID for an account color. |
| * Otherwise, {@value #UNDEFINED_RESOURCE_ID} if color was not specified via ID. |
| */ |
| public int getAccountColorId(long accountId) { |
| return mAccountColorArray.getResourceId(getAccountColorIndex(accountId), |
| UNDEFINED_RESOURCE_ID); |
| } |
| |
| /** |
| * @return {@link Paint} equivalent to {@link #getAccountColor}. |
| */ |
| public Paint getAccountColorPaint(long accountId) { |
| return mAccountColorPaints[getAccountColorIndex(accountId)]; |
| } |
| } |