1/*
2 * Copyright (C) 2014 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
17package android.graphics;
18
19import android.content.res.AssetManager;
20import android.util.Log;
21
22import java.io.FileInputStream;
23import java.io.IOException;
24import java.nio.ByteBuffer;
25import java.nio.channels.FileChannel;
26import java.util.List;
27
28/**
29 * A family of typefaces with different styles.
30 *
31 * @hide
32 */
33public class FontFamily {
34
35    private static String TAG = "FontFamily";
36
37    /**
38     * @hide
39     */
40    public long mNativePtr;
41
42    public FontFamily() {
43        mNativePtr = nCreateFamily(null, 0);
44        if (mNativePtr == 0) {
45            throw new IllegalStateException("error creating native FontFamily");
46        }
47    }
48
49    public FontFamily(String lang, String variant) {
50        int varEnum = 0;
51        if ("compact".equals(variant)) {
52            varEnum = 1;
53        } else if ("elegant".equals(variant)) {
54            varEnum = 2;
55        }
56        mNativePtr = nCreateFamily(lang, varEnum);
57        if (mNativePtr == 0) {
58            throw new IllegalStateException("error creating native FontFamily");
59        }
60    }
61
62    @Override
63    protected void finalize() throws Throwable {
64        try {
65            nUnrefFamily(mNativePtr);
66        } finally {
67            super.finalize();
68        }
69    }
70
71    public boolean addFont(String path, int ttcIndex) {
72        try (FileInputStream file = new FileInputStream(path)) {
73            FileChannel fileChannel = file.getChannel();
74            long fontSize = fileChannel.size();
75            ByteBuffer fontBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fontSize);
76            return nAddFont(mNativePtr, fontBuffer, ttcIndex);
77        } catch (IOException e) {
78            Log.e(TAG, "Error mapping font file " + path);
79            return false;
80        }
81    }
82
83    public boolean addFontWeightStyle(ByteBuffer font, int ttcIndex, List<FontListParser.Axis> axes,
84            int weight, boolean style) {
85        return nAddFontWeightStyle(mNativePtr, font, ttcIndex, axes, weight, style);
86    }
87
88    public boolean addFontFromAsset(AssetManager mgr, String path) {
89        return nAddFontFromAsset(mNativePtr, mgr, path);
90    }
91
92    private static native long nCreateFamily(String lang, int variant);
93    private static native void nUnrefFamily(long nativePtr);
94    private static native boolean nAddFont(long nativeFamily, ByteBuffer font, int ttcIndex);
95    private static native boolean nAddFontWeightStyle(long nativeFamily, ByteBuffer font,
96            int ttcIndex, List<FontListParser.Axis> listOfAxis,
97            int weight, boolean isItalic);
98    private static native boolean nAddFontFromAsset(long nativeFamily, AssetManager mgr,
99            String path);
100}
101