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      1 /*
      2  * Copyright (C) 2017 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 
     17 #ifndef _ANDROID_GRAPHICS_FONT_UTILS_H_
     18 #define _ANDROID_GRAPHICS_FONT_UTILS_H_
     19 
     20 #include <jni.h>
     21 #include <memory>
     22 
     23 #include <minikin/Font.h>
     24 
     25 namespace minikin {
     26 class FontFamily;
     27 }  // namespace minikin
     28 
     29 namespace android {
     30 
     31 struct FontFamilyWrapper {
     32   explicit FontFamilyWrapper(std::shared_ptr<minikin::FontFamily>&& family) : family(family) {}
     33   std::shared_ptr<minikin::FontFamily> family;
     34 };
     35 
     36 struct FontWrapper {
     37   FontWrapper(minikin::Font&& font) : font(std::move(font)) {}
     38   minikin::Font font;
     39 };
     40 
     41 // Utility wrapper for java.util.List
     42 class ListHelper {
     43 public:
     44   ListHelper(JNIEnv* env, jobject list) : mEnv(env), mList(list) {}
     45 
     46   jint size() const;
     47   jobject get(jint index) const;
     48 
     49 private:
     50   JNIEnv* mEnv;
     51   jobject mList;
     52 };
     53 
     54 // Utility wrapper for android.graphics.FontConfig$Axis
     55 class AxisHelper {
     56 public:
     57   AxisHelper(JNIEnv* env, jobject axis) : mEnv(env), mAxis(axis) {}
     58 
     59   jint getTag() const;
     60   jfloat getStyleValue() const;
     61 
     62 private:
     63   JNIEnv* mEnv;
     64   jobject mAxis;
     65 };
     66 
     67 void init_FontUtils(JNIEnv* env);
     68 
     69 }; // namespace android
     70 
     71 #endif  // _ANDROID_GRAPHICS_FONT_UTILS_H_
     72