core/jni/android/graphics/FontFamily.cpp - platform/frameworks/base - Git at Google

 /*
  * 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.
  */

 #define LOG_TAG "Minikin"

 #include <nativehelper/JNIHelp.h>
 #include <core_jni_helpers.h>

 #include "SkData.h"
 #include "SkFontMgr.h"
 #include "SkRefCnt.h"
 #include "SkTypeface.h"
 #include "GraphicsJNI.h"
 #include <nativehelper/ScopedPrimitiveArray.h>
 #include <nativehelper/ScopedUtfChars.h>
 #include <android_runtime/AndroidRuntime.h>
 #include <android_runtime/android_util_AssetManager.h>
 #include <androidfw/AssetManager2.h>
 #include "Utils.h"
 #include "FontUtils.h"

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

 #include <memory>

 namespace android {

 struct NativeFamilyBuilder {
     NativeFamilyBuilder(uint32_t langId, int variant)
         : langId(langId), variant(static_cast<minikin::FontFamily::Variant>(variant)) {}
     uint32_t langId;
     minikin::FontFamily::Variant variant;
     std::vector<minikin::Font> fonts;
     std::vector<minikin::FontVariation> axes;
 };

 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 reinterpret_cast<jlong>(builder);
 }

 static jlong FontFamily_create(jlong builderPtr) {
     if (builderPtr == 0) {
         return 0;
     }
     std::unique_ptr<NativeFamilyBuilder> builder(
             reinterpret_cast<NativeFamilyBuilder*>(builderPtr));
     if (builder->fonts.empty()) {
         return 0;
     }
     std::shared_ptr<minikin::FontFamily> family = std::make_shared<minikin::FontFamily>(
             builder->langId, builder->variant, std::move(builder->fonts));
     if (family->getCoverage().length() == 0) {
         return 0;
     }
     return reinterpret_cast<jlong>(new FontFamilyWrapper(std::move(family)));
 }

 static void FontFamily_abort(jlong builderPtr) {
     NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(builderPtr);
     delete builder;
 }

 static void FontFamily_unref(jlong familyPtr) {
     FontFamilyWrapper* family = reinterpret_cast<FontFamilyWrapper*>(familyPtr);
     delete family;
 }

 static bool addSkTypeface(NativeFamilyBuilder* builder, sk_sp<SkData>&& data, int ttcIndex,
         jint givenWeight, jint givenItalic) {
     uirenderer::FatVector<SkFontArguments::Axis, 2> skiaAxes;
     for (const auto& axis : builder->axes) {
         skiaAxes.emplace_back(SkFontArguments::Axis{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 params;
     params.setCollectionIndex(ttcIndex);
     params.setAxes(skiaAxes.data(), skiaAxes.size());

     sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
     sk_sp<SkTypeface> face(fm->makeFromStream(std::move(fontData), params));
     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), fontPtr, fontSize, ttcIndex,
                     builder->axes);

     int weight = givenWeight;
     bool italic = givenItalic == 1;
     if (givenWeight == RESOLVE_BY_FONT_TABLE || givenItalic == RESOLVE_BY_FONT_TABLE) {
         int os2Weight;
         bool os2Italic;
         if (!minikin::FontFamily::analyzeStyle(minikinFont, &os2Weight, &os2Italic)) {
             ALOGE("analyzeStyle failed. Using default style");
             os2Weight = 400;
             os2Italic = false;
         }
         if (givenWeight == RESOLVE_BY_FONT_TABLE) {
             weight = os2Weight;
         }
         if (givenItalic == RESOLVE_BY_FONT_TABLE) {
             italic = os2Italic;
         }
     }

     builder->fonts.push_back(minikin::Font(minikinFont,
             minikin::FontStyle(weight, static_cast<minikin::FontStyle::Slant>(italic))));
     builder->axes.clear();
     return true;
 }

 static void release_global_ref(const void* /*data*/, void* context) {
     JNIEnv* env = AndroidRuntime::getJNIEnv();
     bool needToAttach = (env == NULL);
     if (needToAttach) {
         JavaVMAttachArgs args;
         args.version = JNI_VERSION_1_4;
         args.name = "release_font_data";
         args.group = NULL;
         jint result = AndroidRuntime::getJavaVM()->AttachCurrentThread(&env, &args);
         if (result != JNI_OK) {
             ALOGE("failed to attach to thread to release global ref.");
             return;
         }
     }

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

     if (needToAttach) {
        AndroidRuntime::getJavaVM()->DetachCurrentThread();
     }
 }

 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 = reinterpret_cast<NativeFamilyBuilder*>(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 releaseAsset(const void* ptr, void* context) {
     delete static_cast<Asset*>(context);
 }

 static jboolean FontFamily_addFontFromAssetManager(JNIEnv* env, jobject, jlong builderPtr,
         jobject jassetMgr, jstring jpath, jint cookie, jboolean isAsset, jint ttcIndex,
         jint weight, jint isItalic) {
     NPE_CHECK_RETURN_ZERO(env, jassetMgr);
     NPE_CHECK_RETURN_ZERO(env, jpath);

     NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(builderPtr);

     Guarded<AssetManager2>* mgr = AssetManagerForJavaObject(env, jassetMgr);
     if (NULL == mgr) {
         builder->axes.clear();
         return false;
     }

     ScopedUtfChars str(env, jpath);
     if (str.c_str() == nullptr) {
         builder->axes.clear();
         return false;
     }

     std::unique_ptr<Asset> asset;
     {
       ScopedLock<AssetManager2> locked_mgr(*mgr);
       if (isAsset) {
           asset = locked_mgr->Open(str.c_str(), Asset::ACCESS_BUFFER);
       } else if (cookie > 0) {
           // Valid java cookies are 1-based, but AssetManager cookies are 0-based.
           asset = locked_mgr->OpenNonAsset(str.c_str(), static_cast<ApkAssetsCookie>(cookie - 1),
                   Asset::ACCESS_BUFFER);
       } else {
           asset = locked_mgr->OpenNonAsset(str.c_str(), Asset::ACCESS_BUFFER);
       }
     }

     if (nullptr == asset) {
         builder->axes.clear();
         return false;
     }

     const void* buf = asset->getBuffer(false);
     if (NULL == buf) {
         builder->axes.clear();
         return false;
     }

     sk_sp<SkData> data(SkData::MakeWithProc(buf, asset->getLength(), releaseAsset,
             asset.release()));
     return addSkTypeface(builder, std::move(data), ttcIndex, weight, isItalic);
 }

 static void FontFamily_addAxisValue(jlong builderPtr, jint tag, jfloat value) {
     NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(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 },
     { "nAbort",                "(J)V", (void*)FontFamily_abort },
     { "nUnrefFamily",          "(J)V", (void*)FontFamily_unref },
     { "nAddFont",              "(JLjava/nio/ByteBuffer;III)Z", (void*)FontFamily_addFont },
     { "nAddFontWeightStyle",   "(JLjava/nio/ByteBuffer;III)Z",
             (void*)FontFamily_addFontWeightStyle },
     { "nAddFontFromAssetManager",    "(JLandroid/content/res/AssetManager;Ljava/lang/String;IZIII)Z",
             (void*)FontFamily_addFontFromAssetManager },
     { "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.
	*/

	#define LOG_TAG "Minikin"

	#include <nativehelper/JNIHelp.h>
	#include <core_jni_helpers.h>

	#include "SkData.h"
	#include "SkFontMgr.h"
	#include "SkRefCnt.h"
	#include "SkTypeface.h"
	#include "GraphicsJNI.h"
	#include <nativehelper/ScopedPrimitiveArray.h>
	#include <nativehelper/ScopedUtfChars.h>
	#include <android_runtime/AndroidRuntime.h>
	#include <android_runtime/android_util_AssetManager.h>
	#include <androidfw/AssetManager2.h>
	#include "Utils.h"
	#include "FontUtils.h"

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

	#include <memory>

	namespace android {

	struct NativeFamilyBuilder {
	NativeFamilyBuilder(uint32_t langId, int variant)
	: langId(langId), variant(static_cast<minikin::FontFamily::Variant>(variant)) {}
	uint32_t langId;
	minikin::FontFamily::Variant variant;
	std::vector<minikin::Font> fonts;
	std::vector<minikin::FontVariation> axes;
	};

	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 reinterpret_cast<jlong>(builder);
	}

	static jlong FontFamily_create(jlong builderPtr) {
	if (builderPtr == 0) {
	return 0;
	}
	std::unique_ptr<NativeFamilyBuilder> builder(
	reinterpret_cast<NativeFamilyBuilder*>(builderPtr));
	if (builder->fonts.empty()) {
	return 0;
	}
	std::shared_ptr<minikin::FontFamily> family = std::make_shared<minikin::FontFamily>(
	builder->langId, builder->variant, std::move(builder->fonts));
	if (family->getCoverage().length() == 0) {
	return 0;
	}
	return reinterpret_cast<jlong>(new FontFamilyWrapper(std::move(family)));
	}

	static void FontFamily_abort(jlong builderPtr) {
	NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(builderPtr);
	delete builder;
	}

	static void FontFamily_unref(jlong familyPtr) {
	FontFamilyWrapper* family = reinterpret_cast<FontFamilyWrapper*>(familyPtr);
	delete family;
	}

	static bool addSkTypeface(NativeFamilyBuilder* builder, sk_sp<SkData>&& data, int ttcIndex,
	jint givenWeight, jint givenItalic) {
	uirenderer::FatVector<SkFontArguments::Axis, 2> skiaAxes;
	for (const auto& axis : builder->axes) {
	skiaAxes.emplace_back(SkFontArguments::Axis{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 params;
	params.setCollectionIndex(ttcIndex);
	params.setAxes(skiaAxes.data(), skiaAxes.size());

	sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
	sk_sp<SkTypeface> face(fm->makeFromStream(std::move(fontData), params));
	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), fontPtr, fontSize, ttcIndex,
	builder->axes);

	int weight = givenWeight;
	bool italic = givenItalic == 1;
	if (givenWeight == RESOLVE_BY_FONT_TABLE \|\| givenItalic == RESOLVE_BY_FONT_TABLE) {
	int os2Weight;
	bool os2Italic;
	if (!minikin::FontFamily::analyzeStyle(minikinFont, &os2Weight, &os2Italic)) {
	ALOGE("analyzeStyle failed. Using default style");
	os2Weight = 400;
	os2Italic = false;
	}
	if (givenWeight == RESOLVE_BY_FONT_TABLE) {
	weight = os2Weight;
	}
	if (givenItalic == RESOLVE_BY_FONT_TABLE) {
	italic = os2Italic;
	}
	}

	builder->fonts.push_back(minikin::Font(minikinFont,
	minikin::FontStyle(weight, static_cast<minikin::FontStyle::Slant>(italic))));
	builder->axes.clear();
	return true;
	}

	static void release_global_ref(const void* /data/, void* context) {
	JNIEnv* env = AndroidRuntime::getJNIEnv();
	bool needToAttach = (env == NULL);
	if (needToAttach) {
	JavaVMAttachArgs args;
	args.version = JNI_VERSION_1_4;
	args.name = "release_font_data";
	args.group = NULL;
	jint result = AndroidRuntime::getJavaVM()->AttachCurrentThread(&env, &args);
	if (result != JNI_OK) {
	ALOGE("failed to attach to thread to release global ref.");
	return;
	}
	}

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

	if (needToAttach) {
	AndroidRuntime::getJavaVM()->DetachCurrentThread();
	}
	}

	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 = reinterpret_cast<NativeFamilyBuilder*>(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 releaseAsset(const void* ptr, void* context) {
	delete static_cast<Asset*>(context);
	}

	static jboolean FontFamily_addFontFromAssetManager(JNIEnv* env, jobject, jlong builderPtr,
	jobject jassetMgr, jstring jpath, jint cookie, jboolean isAsset, jint ttcIndex,
	jint weight, jint isItalic) {
	NPE_CHECK_RETURN_ZERO(env, jassetMgr);
	NPE_CHECK_RETURN_ZERO(env, jpath);

	NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(builderPtr);

	Guarded<AssetManager2>* mgr = AssetManagerForJavaObject(env, jassetMgr);
	if (NULL == mgr) {
	builder->axes.clear();
	return false;
	}

	ScopedUtfChars str(env, jpath);
	if (str.c_str() == nullptr) {
	builder->axes.clear();
	return false;
	}

	std::unique_ptr<Asset> asset;
	{
	ScopedLock<AssetManager2> locked_mgr(*mgr);
	if (isAsset) {
	asset = locked_mgr->Open(str.c_str(), Asset::ACCESS_BUFFER);
	} else if (cookie > 0) {
	// Valid java cookies are 1-based, but AssetManager cookies are 0-based.
	asset = locked_mgr->OpenNonAsset(str.c_str(), static_cast<ApkAssetsCookie>(cookie - 1),
	Asset::ACCESS_BUFFER);
	} else {
	asset = locked_mgr->OpenNonAsset(str.c_str(), Asset::ACCESS_BUFFER);
	}
	}

	if (nullptr == asset) {
	builder->axes.clear();
	return false;
	}

	const void* buf = asset->getBuffer(false);
	if (NULL == buf) {
	builder->axes.clear();
	return false;
	}

	sk_sp<SkData> data(SkData::MakeWithProc(buf, asset->getLength(), releaseAsset,
	asset.release()));
	return addSkTypeface(builder, std::move(data), ttcIndex, weight, isItalic);
	}

	static void FontFamily_addAxisValue(jlong builderPtr, jint tag, jfloat value) {
	NativeFamilyBuilder* builder = reinterpret_cast<NativeFamilyBuilder*>(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 },
	{ "nAbort", "(J)V", (void*)FontFamily_abort },
	{ "nUnrefFamily", "(J)V", (void*)FontFamily_unref },
	{ "nAddFont", "(JLjava/nio/ByteBuffer;III)Z", (void*)FontFamily_addFont },
	{ "nAddFontWeightStyle", "(JLjava/nio/ByteBuffer;III)Z",
	(void*)FontFamily_addFontWeightStyle },
	{ "nAddFontFromAssetManager", "(JLandroid/content/res/AssetManager;Ljava/lang/String;IZIII)Z",
	(void*)FontFamily_addFontFromAssetManager },
	{ "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;
	}

	}