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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * 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, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 package com.android.inputmethod.keyboard.internal;
     18 
     19 import android.content.res.Resources;
     20 import android.content.res.TypedArray;
     21 import android.graphics.drawable.Drawable;
     22 import android.util.Log;
     23 
     24 import com.android.inputmethod.latin.R;
     25 
     26 public class KeyboardIconsSet {
     27     private static final String TAG = KeyboardIconsSet.class.getSimpleName();
     28 
     29     public static final int ICON_UNDEFINED = 0;
     30 
     31     // This should be aligned with Keyboard.keyIcon enum.
     32     private static final int ICON_SHIFT_KEY = 1;
     33     private static final int ICON_DELETE_KEY = 2;
     34     private static final int ICON_SETTINGS_KEY = 3; // This is also represented as "@icon/3" in XML.
     35     private static final int ICON_SPACE_KEY = 4;
     36     private static final int ICON_RETURN_KEY = 5;
     37     private static final int ICON_SEARCH_KEY = 6;
     38     private static final int ICON_TAB_KEY = 7; // This is also represented as "@icon/7" in XML.
     39     private static final int ICON_SHORTCUT_KEY = 8;
     40     private static final int ICON_SHORTCUT_FOR_LABEL = 9;
     41     // This should be aligned with Keyboard.keyIconShifted enum.
     42     private static final int ICON_SHIFTED_SHIFT_KEY = 10;
     43     // This should be aligned with Keyboard.keyIconPreview enum.
     44     private static final int ICON_PREVIEW_TAB_KEY = 11;
     45 
     46     private static final int ICON_LAST = 11;
     47 
     48     private final Drawable mIcons[] = new Drawable[ICON_LAST + 1];
     49 
     50     private static final int getIconId(final int attrIndex) {
     51         switch (attrIndex) {
     52         case R.styleable.Keyboard_iconShiftKey:
     53             return ICON_SHIFT_KEY;
     54         case R.styleable.Keyboard_iconDeleteKey:
     55             return ICON_DELETE_KEY;
     56         case R.styleable.Keyboard_iconSettingsKey:
     57             return ICON_SETTINGS_KEY;
     58         case R.styleable.Keyboard_iconSpaceKey:
     59             return ICON_SPACE_KEY;
     60         case R.styleable.Keyboard_iconReturnKey:
     61             return ICON_RETURN_KEY;
     62         case R.styleable.Keyboard_iconSearchKey:
     63             return ICON_SEARCH_KEY;
     64         case R.styleable.Keyboard_iconTabKey:
     65             return ICON_TAB_KEY;
     66         case R.styleable.Keyboard_iconShortcutKey:
     67             return ICON_SHORTCUT_KEY;
     68         case R.styleable.Keyboard_iconShortcutForLabel:
     69             return ICON_SHORTCUT_FOR_LABEL;
     70         case R.styleable.Keyboard_iconShiftedShiftKey:
     71             return ICON_SHIFTED_SHIFT_KEY;
     72         case R.styleable.Keyboard_iconPreviewTabKey:
     73             return ICON_PREVIEW_TAB_KEY;
     74         default:
     75             return ICON_UNDEFINED;
     76         }
     77     }
     78 
     79     public void loadIcons(final TypedArray keyboardAttrs) {
     80         final int count = keyboardAttrs.getIndexCount();
     81         for (int i = 0; i < count; i++) {
     82             final int attrIndex = keyboardAttrs.getIndex(i);
     83             final int iconId = getIconId(attrIndex);
     84             if (iconId != ICON_UNDEFINED) {
     85                 try {
     86                     mIcons[iconId] = setDefaultBounds(keyboardAttrs.getDrawable(attrIndex));
     87                 } catch (Resources.NotFoundException e) {
     88                     Log.w(TAG, "Drawable resource for icon #" + iconId + " not found");
     89                 }
     90             }
     91         }
     92     }
     93 
     94     public Drawable getIcon(final int iconId) {
     95         if (iconId == ICON_UNDEFINED)
     96             return null;
     97         if (iconId < 0 || iconId >= mIcons.length)
     98             throw new IllegalArgumentException("icon id is out of range: " + iconId);
     99         return mIcons[iconId];
    100     }
    101 
    102     private static Drawable setDefaultBounds(final Drawable icon)  {
    103         if (icon != null) {
    104             icon.setBounds(0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
    105         }
    106         return icon;
    107     }
    108 }
    109