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 <nativehelper/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
size() const37 jint ListHelper::size() const {
38 return mEnv->CallIntMethod(mList, gListClassInfo.mSize);
39 }
40
get(jint index) const41 jobject ListHelper::get(jint index) const {
42 return mEnv->CallObjectMethod(mList, gListClassInfo.mGet, index);
43 }
44
getTag() const45 jint AxisHelper::getTag() const {
46 return mEnv->GetIntField(mAxis, gAxisClassInfo.mTag);
47 }
48
getStyleValue() const49 jfloat AxisHelper::getStyleValue() const {
50 return mEnv->GetFloatField(mAxis, gAxisClassInfo.mStyleValue);
51 }
52
init_FontUtils(JNIEnv * env)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