summaryrefslogtreecommitdiffstats
path: root/src/com/android/launcher2/ItemInfo.java
blob: 8d46624955c5930cf033b352eb9b3b8c6e60d9dd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
 * Copyright (C) 2008 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.launcher2;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

import android.content.ContentValues;
import android.graphics.Bitmap;
import android.util.Log;

/**
 * Represents an item in the launcher.
 */
class ItemInfo {
    
    static final int NO_ID = -1;
    
    /**
     * The id in the settings database for this item
     */
    long id = NO_ID;
    
    /**
     * One of {@link LauncherSettings.Favorites#ITEM_TYPE_APPLICATION},
     * {@link LauncherSettings.Favorites#ITEM_TYPE_SHORTCUT},
     * {@link LauncherSettings.Favorites#ITEM_TYPE_FOLDER}, or
     * {@link LauncherSettings.Favorites#ITEM_TYPE_APPWIDGET}.
     */
    int itemType;
    
    /**
     * The id of the container that holds this item. For the desktop, this will be 
     * {@link LauncherSettings.Favorites#CONTAINER_DESKTOP}. For the all applications folder it
     * will be {@link #NO_ID} (since it is not stored in the settings DB). For user folders
     * it will be the id of the folder.
     */
    long container = NO_ID;
    
    /**
     * Iindicates the screen in which the shortcut appears.
     */
    int screen = -1;
    
    /**
     * Indicates the X position of the associated cell.
     */
    int cellX = -1;

    /**
     * Indicates the Y position of the associated cell.
     */
    int cellY = -1;

    /**
     * Indicates the X cell span.
     */
    int spanX = 1;

    /**
     * Indicates the Y cell span.
     */
    int spanY = 1;

    /**
     * Indicates whether the item is a gesture.
     */
    boolean isGesture = false;

    /**
     * The position of the item in a drag-and-drop operation.
     */
    int[] dropPos = null;

    ItemInfo() {
    }

    ItemInfo(ItemInfo info) {
        id = info.id;
        cellX = info.cellX;
        cellY = info.cellY;
        spanX = info.spanX;
        spanY = info.spanY;
        screen = info.screen;
        itemType = info.itemType;
        container = info.container;
    }

    /**
     * Write the fields of this item to the DB
     * 
     * @param values
     */
    void onAddToDatabase(ContentValues values) { 
        values.put(LauncherSettings.BaseLauncherColumns.ITEM_TYPE, itemType);
        if (!isGesture) {
            values.put(LauncherSettings.Favorites.CONTAINER, container);
            values.put(LauncherSettings.Favorites.SCREEN, screen);
            values.put(LauncherSettings.Favorites.CELLX, cellX);
            values.put(LauncherSettings.Favorites.CELLY, cellY);
            values.put(LauncherSettings.Favorites.SPANX, spanX);
            values.put(LauncherSettings.Favorites.SPANY, spanY);
        }
    }

    void updateValuesWithCoordinates(ContentValues values, int cellX, int cellY) {
        values.put(LauncherSettings.Favorites.CELLX, cellX);
        values.put(LauncherSettings.Favorites.CELLY, cellY);
    }

    static byte[] flattenBitmap(Bitmap bitmap) {
        // Try go guesstimate how much space the icon will take when serialized
        // to avoid unnecessary allocations/copies during the write.
        int size = bitmap.getWidth() * bitmap.getHeight() * 4;
        ByteArrayOutputStream out = new ByteArrayOutputStream(size);
        try {
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
            out.flush();
            out.close();
            return out.toByteArray();
        } catch (IOException e) {
            Log.w("Favorite", "Could not write icon");
            return null;
        }
    }

    static void writeBitmap(ContentValues values, Bitmap bitmap) {
        if (bitmap != null) {
            byte[] data = flattenBitmap(bitmap);
            values.put(LauncherSettings.Favorites.ICON, data);
        }
    }

    /**
     * It is very important that sub-classes implement this if they contain any references
     * to the activity (anything in the view hierarchy etc.). If not, leaks can result since
     * ItemInfo objects persist across rotation and can hence leak by holding stale references
     * to the old view hierarchy / activity.
     */
    void unbind() {
    }

    @Override
    public String toString() {
        return "Item(id=" + this.id + " type=" + this.itemType + " container=" + this.container
            + " screen=" + screen + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX
            + " spanY=" + spanY + " isGesture=" + isGesture + " dropPos=" + dropPos + ")";
    }
}