| /* |
| * Copyright (C) 2009 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 android.emoji; |
| |
| import android.graphics.Bitmap; |
| |
| import java.lang.ref.WeakReference; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| |
| /** |
| * A class for the factories which produce Emoji (pictgram) images. |
| * This is intended to be used by IME, Email app, etc. |
| * There's no plan to make this public for now. |
| * @hide |
| */ |
| public final class EmojiFactory { |
| // private static final String LOG_TAG = "EmojiFactory"; |
| |
| private int sCacheSize = 100; |
| |
| // HashMap for caching Bitmap object. In order not to make a cache object |
| // blow up, we use LinkedHashMap with size limit. |
| private class CustomLinkedHashMap<K, V> extends LinkedHashMap<K, V> { |
| public CustomLinkedHashMap() { |
| // These magic numbers are gotten from the source code of |
| // LinkedHashMap.java and HashMap.java. |
| super(16, 0.75f, true); |
| } |
| |
| /* |
| * If size() becomes more than sCacheSize, least recently used cache |
| * is erased. |
| * @see java.util.LinkedHashMap#removeEldestEntry(java.util.Map.Entry) |
| */ |
| @Override |
| protected boolean removeEldestEntry(Map.Entry<K, V> eldest) { |
| return size() > sCacheSize; |
| } |
| } |
| |
| // A pointer to native EmojiFactory object. |
| private int mNativeEmojiFactory; |
| private String mName; |
| // Cache. |
| private Map<Integer, WeakReference<Bitmap>> mCache; |
| |
| /** |
| * @noinspection UnusedDeclaration |
| */ |
| /* |
| * Private constructor that must received an already allocated native |
| * EmojiFactory int (pointer). |
| * |
| * This can be called from JNI code. |
| */ |
| private EmojiFactory(int nativeEmojiFactory, String name) { |
| mNativeEmojiFactory = nativeEmojiFactory; |
| mName = name; |
| mCache = new CustomLinkedHashMap<Integer, WeakReference<Bitmap>>(); |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| try { |
| nativeDestructor(mNativeEmojiFactory); |
| } finally { |
| super.finalize(); |
| } |
| } |
| |
| public String name() { |
| return mName; |
| } |
| |
| /** |
| * Returns Bitmap object corresponding to the AndroidPua. |
| * |
| * Note that each Bitmap is cached by this class, which means that, if you modify a |
| * Bitmap object (using setPos() method), all same emoji Bitmap will be modified. |
| * If it is unacceptable, please copy the object before modifying it. |
| * |
| * @param pua A unicode codepoint. |
| * @return Bitmap object when this factory knows the Bitmap relevant to the codepoint. |
| * Otherwise null is returned. |
| */ |
| public synchronized Bitmap getBitmapFromAndroidPua(int pua) { |
| WeakReference<Bitmap> cache = mCache.get(pua); |
| if (cache == null) { |
| Bitmap ret = nativeGetBitmapFromAndroidPua(mNativeEmojiFactory, pua); |
| // There is no need to cache returned null, since in most cases it means there |
| // is no map from the AndroidPua to a specific image. In other words, it usually does |
| // not include the cost of creating Bitmap object. |
| if (ret != null) { |
| mCache.put(pua, new WeakReference<Bitmap>(ret)); |
| } |
| return ret; |
| } else { |
| Bitmap tmp = cache.get(); |
| if (tmp == null) { |
| Bitmap ret = nativeGetBitmapFromAndroidPua(mNativeEmojiFactory, pua); |
| mCache.put(pua, new WeakReference<Bitmap>(ret)); |
| return ret; |
| } else { |
| return tmp; |
| } |
| } |
| } |
| |
| /** |
| * Returns Bitmap object corresponding to the vendor specified sjis. |
| * |
| * See comments in getBitmapFromAndroidPua(). |
| * |
| * @param sjis sjis code specific to each career(vendor) |
| * @return Bitmap object when this factory knows the Bitmap relevant to the code. Otherwise |
| * null is returned. |
| */ |
| public synchronized Bitmap getBitmapFromVendorSpecificSjis(char sjis) { |
| return getBitmapFromAndroidPua(getAndroidPuaFromVendorSpecificSjis(sjis)); |
| } |
| |
| /** |
| * Returns Bitmap object corresponding to the vendor specific Unicode. |
| * |
| * See comments in getBitmapFromAndroidPua(). |
| * |
| * @param vsp vendor specific PUA. |
| * @return Bitmap object when this factory knows the Bitmap relevant to the code. Otherwise |
| * null is returned. |
| */ |
| public synchronized Bitmap getBitmapFromVendorSpecificPua(int vsp) { |
| return getBitmapFromAndroidPua(getAndroidPuaFromVendorSpecificPua(vsp)); |
| } |
| |
| /** |
| * Returns Unicode PUA for Android corresponding to the vendor specific sjis. |
| * |
| * @param sjis vendor specific sjis |
| * @return Unicode PUA for Android, or -1 if there's no map for the sjis. |
| */ |
| public int getAndroidPuaFromVendorSpecificSjis(char sjis) { |
| return nativeGetAndroidPuaFromVendorSpecificSjis(mNativeEmojiFactory, sjis); |
| } |
| |
| /** |
| * Returns vendor specific sjis corresponding to the Unicode AndroidPua. |
| * |
| * @param pua Unicode PUA for Android, |
| * @return vendor specific sjis, or -1 if there's no map for the AndroidPua. |
| */ |
| public int getVendorSpecificSjisFromAndroidPua(int pua) { |
| return nativeGetVendorSpecificSjisFromAndroidPua(mNativeEmojiFactory, pua); |
| } |
| |
| /** |
| * Returns Unicode PUA for Android corresponding to the vendor specific Unicode. |
| * |
| * @param vsp vendor specific PUA. |
| * @return Unicode PUA for Android, or -1 if there's no map for the |
| * Unicode. |
| */ |
| public int getAndroidPuaFromVendorSpecificPua(int vsp) { |
| return nativeGetAndroidPuaFromVendorSpecificPua(mNativeEmojiFactory, vsp); |
| } |
| |
| public String getAndroidPuaFromVendorSpecificPua(String vspString) { |
| if (vspString == null) { |
| return null; |
| } |
| int minVsp = nativeGetMinimumVendorSpecificPua(mNativeEmojiFactory); |
| int maxVsp = nativeGetMaximumVendorSpecificPua(mNativeEmojiFactory); |
| int len = vspString.length(); |
| int[] codePoints = new int[vspString.codePointCount(0, len)]; |
| |
| int new_len = 0; |
| for (int i = 0; i < len; i = vspString.offsetByCodePoints(i, 1), new_len++) { |
| int codePoint = vspString.codePointAt(i); |
| if (minVsp <= codePoint && codePoint <= maxVsp) { |
| int newCodePoint = getAndroidPuaFromVendorSpecificPua(codePoint); |
| if (newCodePoint > 0) { |
| codePoints[new_len] = newCodePoint; |
| continue; |
| } |
| } |
| codePoints[new_len] = codePoint; |
| } |
| return new String(codePoints, 0, new_len); |
| } |
| |
| /** |
| * Returns vendor specific Unicode corresponding to the Unicode AndroidPua. |
| * |
| * @param pua Unicode PUA for Android, |
| * @return vendor specific sjis, or -1 if there's no map for the AndroidPua. |
| */ |
| public int getVendorSpecificPuaFromAndroidPua(int pua) { |
| return nativeGetVendorSpecificPuaFromAndroidPua(mNativeEmojiFactory, pua); |
| } |
| |
| public String getVendorSpecificPuaFromAndroidPua(String puaString) { |
| if (puaString == null) { |
| return null; |
| } |
| int minVsp = nativeGetMinimumAndroidPua(mNativeEmojiFactory); |
| int maxVsp = nativeGetMaximumAndroidPua(mNativeEmojiFactory); |
| int len = puaString.length(); |
| int[] codePoints = new int[puaString.codePointCount(0, len)]; |
| |
| int new_len = 0; |
| for (int i = 0; i < len; i = puaString.offsetByCodePoints(i, 1), new_len++) { |
| int codePoint = puaString.codePointAt(i); |
| if (minVsp <= codePoint && codePoint <= maxVsp) { |
| int newCodePoint = getVendorSpecificPuaFromAndroidPua(codePoint); |
| if (newCodePoint > 0) { |
| codePoints[new_len] = newCodePoint; |
| continue; |
| } |
| } |
| codePoints[new_len] = codePoint; |
| } |
| return new String(codePoints, 0, new_len); |
| } |
| |
| /** |
| * Constructs an instance of EmojiFactory corresponding to the name. |
| * |
| * @param class_name Name of the factory. This must include complete package name. |
| * @return A concrete EmojiFactory instance corresponding to factory_name. |
| * If factory_name is invalid, null is returned. |
| */ |
| public static native EmojiFactory newInstance(String class_name); |
| |
| /** |
| * Constructs an instance of available EmojiFactory. |
| * |
| * @return A concrete EmojiFactory instance. If there are several available |
| * EmojiFactory class, preferred one is chosen by the system. If there isn't, null |
| * is returned. |
| */ |
| public static native EmojiFactory newAvailableInstance(); |
| |
| /** |
| * Returns the lowest code point corresponding to an Android |
| * emoji character. |
| */ |
| public int getMinimumAndroidPua() { |
| return nativeGetMinimumAndroidPua(mNativeEmojiFactory); |
| } |
| |
| /** |
| * Returns the highest code point corresponding to an Android |
| * emoji character. |
| */ |
| public int getMaximumAndroidPua() { |
| return nativeGetMaximumAndroidPua(mNativeEmojiFactory); |
| } |
| |
| // native methods |
| |
| private native void nativeDestructor(int factory); |
| private native Bitmap nativeGetBitmapFromAndroidPua(int nativeEmojiFactory, int AndroidPua); |
| private native int nativeGetAndroidPuaFromVendorSpecificSjis(int nativeEmojiFactory, |
| char sjis); |
| private native int nativeGetVendorSpecificSjisFromAndroidPua(int nativeEmojiFactory, |
| int pua); |
| private native int nativeGetAndroidPuaFromVendorSpecificPua(int nativeEmojiFactory, |
| int vsp); |
| private native int nativeGetVendorSpecificPuaFromAndroidPua(int nativeEmojiFactory, |
| int pua); |
| private native int nativeGetMaximumVendorSpecificPua(int nativeEmojiFactory); |
| private native int nativeGetMinimumVendorSpecificPua(int nativeEmojiFactory); |
| private native int nativeGetMaximumAndroidPua(int nativeEmojiFactory); |
| private native int nativeGetMinimumAndroidPua(int nativeEmojiFactory); |
| } |