libs/hwui/jni/FontFamily.cpp - android_frameworks_base - Gitiles

 /*
  * Copyright (C) 2014 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.
  */

 #include <nativehelper/ScopedPrimitiveArray.h>
 #include <nativehelper/ScopedUtfChars.h>
 #include "FontUtils.h"
 #include "GraphicsJNI.h"
 #include "SkData.h"
 #include "SkFontMgr.h"
 #include "SkRefCnt.h"
 #include "SkStream.h"
 #include "SkTypeface.h"
 #include "Utils.h"
 #include "fonts/Font.h"

 #include <hwui/MinikinSkia.h>
 #include <hwui/Typeface.h>
 #include <minikin/FontFamily.h>
 #include <minikin/LocaleList.h>
 #include <ui/FatVector.h>

 #include <memory>

 ///////////////////////////////////////////////////////////////////////////////////////////////////
 //
 // The following JNI methods are kept only for compatibility reasons due to hidden API accesses.
 //
 ///////////////////////////////////////////////////////////////////////////////////////////////////

 namespace android {

 namespace {
 struct NativeFamilyBuilder {
     NativeFamilyBuilder(uint32_t langId, int variant)
         : langId(langId), variant(static_cast<minikin::FamilyVariant>(variant)) {}
     uint32_t langId;
     minikin::FamilyVariant variant;
     std::vector<std::shared_ptr<minikin::Font>> fonts;
     std::vector<minikin::FontVariation> axes;
 };
 }  // namespace

 static inline NativeFamilyBuilder* toNativeBuilder(jlong ptr) {
     return reinterpret_cast<NativeFamilyBuilder*>(ptr);
 }

 static inline FontFamilyWrapper* toFamily(jlong ptr) {
     return reinterpret_cast<FontFamilyWrapper*>(ptr);
 }

 template<typename Ptr> static inline jlong toJLong(Ptr ptr) {
     return reinterpret_cast<jlong>(ptr);
 }

 static jlong FontFamily_initBuilder(JNIEnv* env, jobject clazz, jstring langs, jint variant) {
     NativeFamilyBuilder* builder;
     if (langs != nullptr) {
         ScopedUtfChars str(env, langs);
         builder = new NativeFamilyBuilder(minikin::registerLocaleList(str.c_str()), variant);
     } else {
         builder = new NativeFamilyBuilder(minikin::registerLocaleList(""), variant);
     }
     return toJLong(builder);
 }

 static jlong FontFamily_create(CRITICAL_JNI_PARAMS_COMMA jlong builderPtr) {
     if (builderPtr == 0) {
         return 0;
     }
     NativeFamilyBuilder* builder = toNativeBuilder(builderPtr);
     if (builder->fonts.empty()) {
         return 0;
     }
     std::shared_ptr<minikin::FontFamily> family = minikin::FontFamily::create(
             builder->langId, builder->variant, std::move(builder->fonts),
             true /* isCustomFallback */, false /* isDefaultFallback */,
             minikin::VariationFamilyType::None);
     if (family->getCoverage().length() == 0) {
         return 0;
     }
     return toJLong(new FontFamilyWrapper(std::move(family)));
 }

 static void releaseBuilder(jlong builderPtr) {
     delete toNativeBuilder(builderPtr);
 }

 static jlong FontFamily_getBuilderReleaseFunc(CRITICAL_JNI_PARAMS) {
     return toJLong(&releaseBuilder);
 }

 static void releaseFamily(jlong familyPtr) {
     delete toFamily(familyPtr);
 }

 static jlong FontFamily_getFamilyReleaseFunc(CRITICAL_JNI_PARAMS) {
     return toJLong(&releaseFamily);
 }

 static bool addSkTypeface(NativeFamilyBuilder* builder, sk_sp<SkData>&& data, int ttcIndex,
         jint weight, jint italic) {
     FatVector<SkFontArguments::VariationPosition::Coordinate, 2> skVariation;
     for (const auto& axis : builder->axes) {
         skVariation.push_back({axis.axisTag, axis.value});
     }

     const size_t fontSize = data->size();
     const void* fontPtr = data->data();
     std::unique_ptr<SkStreamAsset> fontData(new SkMemoryStream(std::move(data)));

     SkFontArguments args;
     args.setCollectionIndex(ttcIndex);
     args.setVariationDesignPosition({skVariation.data(), static_cast<int>(skVariation.size())});

     sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
     sk_sp<SkTypeface> face(fm->makeFromStream(std::move(fontData), args));
     if (face == NULL) {
         ALOGE("addFont failed to create font, invalid request");
         builder->axes.clear();
         return false;
     }
     std::shared_ptr<minikin::MinikinFont> minikinFont =
             std::make_shared<MinikinFontSkia>(std::move(face), fonts::getNewSourceId(), fontPtr,
                                               fontSize, "", ttcIndex, builder->axes);
     minikin::Font::Builder fontBuilder(minikinFont);

     if (weight != RESOLVE_BY_FONT_TABLE) {
         fontBuilder.setWeight(weight);
     }
     if (italic != RESOLVE_BY_FONT_TABLE) {
         fontBuilder.setSlant(static_cast<minikin::FontStyle::Slant>(italic != 0));
     }
     builder->fonts.push_back(fontBuilder.build());
     builder->axes.clear();
     return true;
 }

 static void release_global_ref(const void* /*data*/, void* context) {
     JNIEnv* env = GraphicsJNI::getJNIEnv();
     bool needToAttach = (env == NULL);
     if (needToAttach) {
         env = GraphicsJNI::attachJNIEnv("release_font_data");
         if (env == nullptr) {
             ALOGE("failed to attach to thread to release global ref.");
             return;
         }
     }

     jobject obj = reinterpret_cast<jobject>(context);
     env->DeleteGlobalRef(obj);

     if (needToAttach) {
        GraphicsJNI::detachJNIEnv();
     }
 }

 static jboolean FontFamily_addFont(JNIEnv* env, jobject clazz, jlong builderPtr, jobject bytebuf,
         jint ttcIndex, jint weight, jint isItalic) {
     NPE_CHECK_RETURN_ZERO(env, bytebuf);
     NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(builderPtr);
     const void* fontPtr = env->GetDirectBufferAddress(bytebuf);
     if (fontPtr == NULL) {
         ALOGE("addFont failed to create font, buffer invalid");
         builder->axes.clear();
         return false;
     }
     jlong fontSize = env->GetDirectBufferCapacity(bytebuf);
     if (fontSize < 0) {
         ALOGE("addFont failed to create font, buffer size invalid");
         builder->axes.clear();
         return false;
     }
     jobject fontRef = MakeGlobalRefOrDie(env, bytebuf);
     sk_sp<SkData> data(SkData::MakeWithProc(fontPtr, fontSize,
             release_global_ref, reinterpret_cast<void*>(fontRef)));
     return addSkTypeface(builder, std::move(data), ttcIndex, weight, isItalic);
 }

 static jboolean FontFamily_addFontWeightStyle(JNIEnv* env, jobject clazz, jlong builderPtr,
         jobject font, jint ttcIndex, jint weight, jint isItalic) {
     NPE_CHECK_RETURN_ZERO(env, font);
     NativeFamilyBuilder* builder = toNativeBuilder(builderPtr);
     const void* fontPtr = env->GetDirectBufferAddress(font);
     if (fontPtr == NULL) {
         ALOGE("addFont failed to create font, buffer invalid");
         builder->axes.clear();
         return false;
     }
     jlong fontSize = env->GetDirectBufferCapacity(font);
     if (fontSize < 0) {
         ALOGE("addFont failed to create font, buffer size invalid");
         builder->axes.clear();
         return false;
     }
     jobject fontRef = MakeGlobalRefOrDie(env, font);
     sk_sp<SkData> data(SkData::MakeWithProc(fontPtr, fontSize,
             release_global_ref, reinterpret_cast<void*>(fontRef)));
     return addSkTypeface(builder, std::move(data), ttcIndex, weight, isItalic);
 }

 static void FontFamily_addAxisValue(CRITICAL_JNI_PARAMS_COMMA jlong builderPtr, jint tag, jfloat value) {
     NativeFamilyBuilder* builder = toNativeBuilder(builderPtr);
     builder->axes.push_back({static_cast<minikin::AxisTag>(tag), value});
 }

 ///////////////////////////////////////////////////////////////////////////////

 static const JNINativeMethod gFontFamilyMethods[] = {
     { "nInitBuilder",           "(Ljava/lang/String;I)J", (void*)FontFamily_initBuilder },
     { "nCreateFamily",          "(J)J", (void*)FontFamily_create },
     { "nGetBuilderReleaseFunc", "()J", (void*)FontFamily_getBuilderReleaseFunc },
     { "nGetFamilyReleaseFunc",  "()J", (void*)FontFamily_getFamilyReleaseFunc },
     { "nAddFont",               "(JLjava/nio/ByteBuffer;III)Z", (void*)FontFamily_addFont },
     { "nAddFontWeightStyle",    "(JLjava/nio/ByteBuffer;III)Z",
             (void*)FontFamily_addFontWeightStyle },
     { "nAddAxisValue",         "(JIF)V", (void*)FontFamily_addAxisValue },
 };

 int register_android_graphics_FontFamily(JNIEnv* env)
 {
     int err = RegisterMethodsOrDie(env, "android/graphics/FontFamily", gFontFamilyMethods,
             NELEM(gFontFamilyMethods));

     init_FontUtils(env);
     return err;
 }

 }
	/*
	* Copyright (C) 2014 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.
	*/

	#include <nativehelper/ScopedPrimitiveArray.h>
	#include <nativehelper/ScopedUtfChars.h>
	#include "FontUtils.h"
	#include "GraphicsJNI.h"
	#include "SkData.h"
	#include "SkFontMgr.h"
	#include "SkRefCnt.h"
	#include "SkStream.h"
	#include "SkTypeface.h"
	#include "Utils.h"
	#include "fonts/Font.h"

	#include <hwui/MinikinSkia.h>
	#include <hwui/Typeface.h>
	#include <minikin/FontFamily.h>
	#include <minikin/LocaleList.h>
	#include <ui/FatVector.h>

	#include <memory>

	///////////////////////////////////////////////////////////////////////////////////////////////////
	//
	// The following JNI methods are kept only for compatibility reasons due to hidden API accesses.
	//
	///////////////////////////////////////////////////////////////////////////////////////////////////

	namespace android {

	namespace {
	struct NativeFamilyBuilder {
	NativeFamilyBuilder(uint32_t langId, int variant)
	: langId(langId), variant(static_cast<minikin::FamilyVariant>(variant)) {}
	uint32_t langId;
	minikin::FamilyVariant variant;
	std::vector<std::shared_ptr<minikin::Font>> fonts;
	std::vector<minikin::FontVariation> axes;
	};
	} // namespace

	static inline NativeFamilyBuilder* toNativeBuilder(jlong ptr) {
	return reinterpret_cast<NativeFamilyBuilder*>(ptr);
	}

	static inline FontFamilyWrapper* toFamily(jlong ptr) {
	return reinterpret_cast<FontFamilyWrapper*>(ptr);
	}

	template<typename Ptr> static inline jlong toJLong(Ptr ptr) {
	return reinterpret_cast<jlong>(ptr);
	}

	static jlong FontFamily_initBuilder(JNIEnv* env, jobject clazz, jstring langs, jint variant) {
	NativeFamilyBuilder* builder;
	if (langs != nullptr) {
	ScopedUtfChars str(env, langs);
	builder = new NativeFamilyBuilder(minikin::registerLocaleList(str.c_str()), variant);
	} else {
	builder = new NativeFamilyBuilder(minikin::registerLocaleList(""), variant);
	}
	return toJLong(builder);
	}

	static jlong FontFamily_create(CRITICAL_JNI_PARAMS_COMMA jlong builderPtr) {
	if (builderPtr == 0) {
	return 0;
	}
	NativeFamilyBuilder* builder = toNativeBuilder(builderPtr);
	if (builder->fonts.empty()) {
	return 0;
	}
	std::shared_ptr<minikin::FontFamily> family = minikin::FontFamily::create(
	builder->langId, builder->variant, std::move(builder->fonts),
	true /* isCustomFallback /, false / isDefaultFallback */,
	minikin::VariationFamilyType::None);
	if (family->getCoverage().length() == 0) {
	return 0;
	}
	return toJLong(new FontFamilyWrapper(std::move(family)));
	}

	static void releaseBuilder(jlong builderPtr) {
	delete toNativeBuilder(builderPtr);
	}

	static jlong FontFamily_getBuilderReleaseFunc(CRITICAL_JNI_PARAMS) {
	return toJLong(&releaseBuilder);
	}

	static void releaseFamily(jlong familyPtr) {
	delete toFamily(familyPtr);
	}

	static jlong FontFamily_getFamilyReleaseFunc(CRITICAL_JNI_PARAMS) {
	return toJLong(&releaseFamily);
	}

	static bool addSkTypeface(NativeFamilyBuilder* builder, sk_sp<SkData>&& data, int ttcIndex,
	jint weight, jint italic) {
	FatVector<SkFontArguments::VariationPosition::Coordinate, 2> skVariation;
	for (const auto& axis : builder->axes) {
	skVariation.push_back({axis.axisTag, axis.value});
	}

	const size_t fontSize = data->size();
	const void* fontPtr = data->data();
	std::unique_ptr<SkStreamAsset> fontData(new SkMemoryStream(std::move(data)));

	SkFontArguments args;
	args.setCollectionIndex(ttcIndex);
	args.setVariationDesignPosition({skVariation.data(), static_cast<int>(skVariation.size())});

	sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
	sk_sp<SkTypeface> face(fm->makeFromStream(std::move(fontData), args));
	if (face == NULL) {
	ALOGE("addFont failed to create font, invalid request");
	builder->axes.clear();
	return false;
	}
	std::shared_ptr<minikin::MinikinFont> minikinFont =
	std::make_shared<MinikinFontSkia>(std::move(face), fonts::getNewSourceId(), fontPtr,
	fontSize, "", ttcIndex, builder->axes);
	minikin::Font::Builder fontBuilder(minikinFont);

	if (weight != RESOLVE_BY_FONT_TABLE) {
	fontBuilder.setWeight(weight);
	}
	if (italic != RESOLVE_BY_FONT_TABLE) {
	fontBuilder.setSlant(static_cast<minikin::FontStyle::Slant>(italic != 0));
	}
	builder->fonts.push_back(fontBuilder.build());
	builder->axes.clear();
	return true;
	}

	static void release_global_ref(const void* /data/, void* context) {
	JNIEnv* env = GraphicsJNI::getJNIEnv();
	bool needToAttach = (env == NULL);
	if (needToAttach) {
	env = GraphicsJNI::attachJNIEnv("release_font_data");
	if (env == nullptr) {
	ALOGE("failed to attach to thread to release global ref.");
	return;
	}
	}

	jobject obj = reinterpret_cast<jobject>(context);
	env->DeleteGlobalRef(obj);

	if (needToAttach) {
	GraphicsJNI::detachJNIEnv();
	}
	}

	static jboolean FontFamily_addFont(JNIEnv* env, jobject clazz, jlong builderPtr, jobject bytebuf,
	jint ttcIndex, jint weight, jint isItalic) {
	NPE_CHECK_RETURN_ZERO(env, bytebuf);
	NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(builderPtr);
	const void* fontPtr = env->GetDirectBufferAddress(bytebuf);
	if (fontPtr == NULL) {
	ALOGE("addFont failed to create font, buffer invalid");
	builder->axes.clear();
	return false;
	}
	jlong fontSize = env->GetDirectBufferCapacity(bytebuf);
	if (fontSize < 0) {
	ALOGE("addFont failed to create font, buffer size invalid");
	builder->axes.clear();
	return false;
	}
	jobject fontRef = MakeGlobalRefOrDie(env, bytebuf);
	sk_sp<SkData> data(SkData::MakeWithProc(fontPtr, fontSize,
	release_global_ref, reinterpret_cast<void*>(fontRef)));
	return addSkTypeface(builder, std::move(data), ttcIndex, weight, isItalic);
	}

	static jboolean FontFamily_addFontWeightStyle(JNIEnv* env, jobject clazz, jlong builderPtr,
	jobject font, jint ttcIndex, jint weight, jint isItalic) {
	NPE_CHECK_RETURN_ZERO(env, font);
	NativeFamilyBuilder* builder = toNativeBuilder(builderPtr);
	const void* fontPtr = env->GetDirectBufferAddress(font);
	if (fontPtr == NULL) {
	ALOGE("addFont failed to create font, buffer invalid");
	builder->axes.clear();
	return false;
	}
	jlong fontSize = env->GetDirectBufferCapacity(font);
	if (fontSize < 0) {
	ALOGE("addFont failed to create font, buffer size invalid");
	builder->axes.clear();
	return false;
	}
	jobject fontRef = MakeGlobalRefOrDie(env, font);
	sk_sp<SkData> data(SkData::MakeWithProc(fontPtr, fontSize,
	release_global_ref, reinterpret_cast<void*>(fontRef)));
	return addSkTypeface(builder, std::move(data), ttcIndex, weight, isItalic);
	}

	static void FontFamily_addAxisValue(CRITICAL_JNI_PARAMS_COMMA jlong builderPtr, jint tag, jfloat value) {
	NativeFamilyBuilder* builder = toNativeBuilder(builderPtr);
	builder->axes.push_back({static_cast<minikin::AxisTag>(tag), value});
	}

	///////////////////////////////////////////////////////////////////////////////

	static const JNINativeMethod gFontFamilyMethods[] = {
	{ "nInitBuilder", "(Ljava/lang/String;I)J", (void*)FontFamily_initBuilder },
	{ "nCreateFamily", "(J)J", (void*)FontFamily_create },
	{ "nGetBuilderReleaseFunc", "()J", (void*)FontFamily_getBuilderReleaseFunc },
	{ "nGetFamilyReleaseFunc", "()J", (void*)FontFamily_getFamilyReleaseFunc },
	{ "nAddFont", "(JLjava/nio/ByteBuffer;III)Z", (void*)FontFamily_addFont },
	{ "nAddFontWeightStyle", "(JLjava/nio/ByteBuffer;III)Z",
	(void*)FontFamily_addFontWeightStyle },
	{ "nAddAxisValue", "(JIF)V", (void*)FontFamily_addAxisValue },
	};

	int register_android_graphics_FontFamily(JNIEnv* env)
	{
	int err = RegisterMethodsOrDie(env, "android/graphics/FontFamily", gFontFamilyMethods,
	NELEM(gFontFamilyMethods));

	init_FontUtils(env);
	return err;
	}

	}