68 lines
2.2 KiB
C++
Executable File
68 lines
2.2 KiB
C++
Executable File
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#undef LOG_TAG
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#define LOG_TAG "GraphemeBreaker"
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#include <minikin/GraphemeBreak.h>
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#include <nativehelper/ScopedPrimitiveArray.h>
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#include "GraphicsJNI.h"
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namespace android {
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static void nIsGraphemeBreak(JNIEnv* env, jclass, jfloatArray advances, jcharArray text, jint start,
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jint end, jbooleanArray isGraphemeBreak) {
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if (start > end || env->GetArrayLength(advances) < end ||
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env->GetArrayLength(isGraphemeBreak) < end - start) {
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doThrowAIOOBE(env);
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}
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if (start == end) {
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return;
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}
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ScopedFloatArrayRO advancesArray(env, advances);
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ScopedCharArrayRO textArray(env, text);
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ScopedBooleanArrayRW isGraphemeBreakArray(env, isGraphemeBreak);
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size_t count = end - start;
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for (size_t offset = 0; offset < count; ++offset) {
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bool isBreak = minikin::GraphemeBreak::isGraphemeBreak(advancesArray.get(), textArray.get(),
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start, end, start + offset);
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isGraphemeBreakArray[offset] = isBreak ? JNI_TRUE : JNI_FALSE;
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}
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}
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static const JNINativeMethod gMethods[] = {
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{"nIsGraphemeBreak",
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"("
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"[F" // advances
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"[C" // text
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"I" // start
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"I" // end
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"[Z" // isGraphemeBreak
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")V",
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(void*)nIsGraphemeBreak},
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};
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int register_android_graphics_text_GraphemeBreak(JNIEnv* env) {
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return RegisterMethodsOrDie(env, "android/graphics/text/GraphemeBreak", gMethods,
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NELEM(gMethods));
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}
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} // namespace android
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