1 /*
2 * Copyright (C) 2018 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 #undef LOG_TAG
18 #define LOG_TAG "Minikin"
19
20 #include "graphics_jni_helpers.h"
21 #include <nativehelper/ScopedUtfChars.h>
22
23 #include "FontUtils.h"
24
25 #include <minikin/FontFamily.h>
26 #include <minikin/LocaleList.h>
27
28 #include <memory>
29
30 namespace android {
31
32 struct NativeFamilyBuilder {
33 std::vector<std::shared_ptr<minikin::Font>> fonts;
34 };
35
toBuilder(jlong ptr)36 static inline NativeFamilyBuilder* toBuilder(jlong ptr) {
37 return reinterpret_cast<NativeFamilyBuilder*>(ptr);
38 }
39
toFontWrapper(jlong ptr)40 static inline FontWrapper* toFontWrapper(jlong ptr) {
41 return reinterpret_cast<FontWrapper*>(ptr);
42 }
43
releaseFontFamily(jlong family)44 static void releaseFontFamily(jlong family) {
45 delete reinterpret_cast<FontFamilyWrapper*>(family);
46 }
47
48 // Regular JNI
FontFamily_Builder_initBuilder(JNIEnv *,jobject)49 static jlong FontFamily_Builder_initBuilder(JNIEnv*, jobject) {
50 return reinterpret_cast<jlong>(new NativeFamilyBuilder());
51 }
52
53 // Critical Native
FontFamily_Builder_addFont(CRITICAL_JNI_PARAMS_COMMA jlong builderPtr,jlong fontPtr)54 static void FontFamily_Builder_addFont(CRITICAL_JNI_PARAMS_COMMA jlong builderPtr, jlong fontPtr) {
55 toBuilder(builderPtr)->fonts.push_back(toFontWrapper(fontPtr)->font);
56 }
57
58 // Regular JNI
FontFamily_Builder_build(JNIEnv * env,jobject clazz,jlong builderPtr,jstring langTags,jint variant,jboolean isCustomFallback,jboolean isDefaultFallback)59 static jlong FontFamily_Builder_build(JNIEnv* env, jobject clazz, jlong builderPtr,
60 jstring langTags, jint variant, jboolean isCustomFallback,
61 jboolean isDefaultFallback) {
62 std::unique_ptr<NativeFamilyBuilder> builder(toBuilder(builderPtr));
63 uint32_t localeId;
64 if (langTags == nullptr) {
65 localeId = minikin::registerLocaleList("");
66 } else {
67 ScopedUtfChars str(env, langTags);
68 localeId = minikin::registerLocaleList(str.c_str());
69 }
70 std::shared_ptr<minikin::FontFamily> family = minikin::FontFamily::create(
71 localeId, static_cast<minikin::FamilyVariant>(variant), std::move(builder->fonts),
72 isCustomFallback, isDefaultFallback);
73 if (family->getCoverage().length() == 0) {
74 // No coverage means minikin rejected given font for some reasons.
75 jniThrowException(env, "java/lang/IllegalArgumentException",
76 "Failed to create internal object. maybe invalid font data");
77 return 0;
78 }
79 return reinterpret_cast<jlong>(new FontFamilyWrapper(std::move(family)));
80 }
81
82 // CriticalNative
FontFamily_Builder_GetReleaseFunc(CRITICAL_JNI_PARAMS)83 static jlong FontFamily_Builder_GetReleaseFunc(CRITICAL_JNI_PARAMS) {
84 return reinterpret_cast<jlong>(releaseFontFamily);
85 }
86
87 // FastNative
FontFamily_getLangTags(JNIEnv * env,jobject,jlong familyPtr)88 static jstring FontFamily_getLangTags(JNIEnv* env, jobject, jlong familyPtr) {
89 FontFamilyWrapper* family = reinterpret_cast<FontFamilyWrapper*>(familyPtr);
90 uint32_t localeListId = family->family->localeListId();
91 if (localeListId == 0) {
92 return nullptr;
93 }
94 std::string langTags = minikin::getLocaleString(localeListId);
95 return env->NewStringUTF(langTags.c_str());
96 }
97
98 // CriticalNative
FontFamily_getVariant(CRITICAL_JNI_PARAMS_COMMA jlong familyPtr)99 static jint FontFamily_getVariant(CRITICAL_JNI_PARAMS_COMMA jlong familyPtr) {
100 FontFamilyWrapper* family = reinterpret_cast<FontFamilyWrapper*>(familyPtr);
101 return static_cast<jint>(family->family->variant());
102 }
103
104 // CriticalNative
FontFamily_getFontSize(CRITICAL_JNI_PARAMS_COMMA jlong familyPtr)105 static jint FontFamily_getFontSize(CRITICAL_JNI_PARAMS_COMMA jlong familyPtr) {
106 FontFamilyWrapper* family = reinterpret_cast<FontFamilyWrapper*>(familyPtr);
107 return family->family->getNumFonts();
108 }
109
110 // CriticalNative
FontFamily_getFont(CRITICAL_JNI_PARAMS_COMMA jlong familyPtr,jint index)111 static jlong FontFamily_getFont(CRITICAL_JNI_PARAMS_COMMA jlong familyPtr, jint index) {
112 FontFamilyWrapper* family = reinterpret_cast<FontFamilyWrapper*>(familyPtr);
113 std::shared_ptr<minikin::Font> font = family->family->getFontRef(index);
114 return reinterpret_cast<jlong>(new FontWrapper(std::move(font)));
115 }
116
117 ///////////////////////////////////////////////////////////////////////////////
118
119 static const JNINativeMethod gFontFamilyBuilderMethods[] = {
120 {"nInitBuilder", "()J", (void*)FontFamily_Builder_initBuilder},
121 {"nAddFont", "(JJ)V", (void*)FontFamily_Builder_addFont},
122 {"nBuild", "(JLjava/lang/String;IZZ)J", (void*)FontFamily_Builder_build},
123 {"nGetReleaseNativeFamily", "()J", (void*)FontFamily_Builder_GetReleaseFunc},
124 };
125
126 static const JNINativeMethod gFontFamilyMethods[] = {
127 {"nGetFontSize", "(J)I", (void*)FontFamily_getFontSize},
128 {"nGetFont", "(JI)J", (void*)FontFamily_getFont},
129 {"nGetLangTags", "(J)Ljava/lang/String;", (void*)FontFamily_getLangTags},
130 {"nGetVariant", "(J)I", (void*)FontFamily_getVariant},
131 };
132
register_android_graphics_fonts_FontFamily(JNIEnv * env)133 int register_android_graphics_fonts_FontFamily(JNIEnv* env) {
134 return RegisterMethodsOrDie(env, "android/graphics/fonts/FontFamily$Builder",
135 gFontFamilyBuilderMethods, NELEM(gFontFamilyBuilderMethods)) +
136 RegisterMethodsOrDie(env, "android/graphics/fonts/FontFamily", gFontFamilyMethods,
137 NELEM(gFontFamilyMethods));
138 }
139
140 }
141