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      1 /*
      2  * Copyright (C) 2016 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 #include "FontUtils.h"
     18 
     19 #include "JNIHelp.h"
     20 #include <core_jni_helpers.h>
     21 
     22 namespace android {
     23 namespace {
     24 
     25 static struct {
     26     jmethodID mGet;
     27     jmethodID mSize;
     28 } gListClassInfo;
     29 
     30 static struct {
     31     jfieldID mTag;
     32     jfieldID mStyleValue;
     33 } gAxisClassInfo;
     34 
     35 }  // namespace
     36 
     37 jint ListHelper::size() const {
     38     return mEnv->CallIntMethod(mList, gListClassInfo.mSize);
     39 }
     40 
     41 jobject ListHelper::get(jint index) const {
     42     return mEnv->CallObjectMethod(mList, gListClassInfo.mGet, index);
     43 }
     44 
     45 jint AxisHelper::getTag() const {
     46     return mEnv->GetIntField(mAxis, gAxisClassInfo.mTag);
     47 }
     48 
     49 jfloat AxisHelper::getStyleValue() const {
     50     return mEnv->GetFloatField(mAxis, gAxisClassInfo.mStyleValue);
     51 }
     52 
     53 void init_FontUtils(JNIEnv* env) {
     54     jclass listClass = FindClassOrDie(env, "java/util/List");
     55     gListClassInfo.mGet = GetMethodIDOrDie(env, listClass, "get", "(I)Ljava/lang/Object;");
     56     gListClassInfo.mSize = GetMethodIDOrDie(env, listClass, "size", "()I");
     57 
     58     jclass axisClass = FindClassOrDie(env, "android/graphics/fonts/FontVariationAxis");
     59     gAxisClassInfo.mTag = GetFieldIDOrDie(env, axisClass, "mTag", "I");
     60     gAxisClassInfo.mStyleValue = GetFieldIDOrDie(env, axisClass, "mStyleValue", "F");
     61 }
     62 
     63 }  // namespace android
     64