1 /*
2 * Copyright (C) 2014 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 #define LOG_TAG "Minikin"
18
19 #include "JNIHelp.h"
20 #include <core_jni_helpers.h>
21
22 #include "SkData.h"
23 #include "SkRefCnt.h"
24 #include "SkTypeface.h"
25 #include "GraphicsJNI.h"
26 #include <ScopedPrimitiveArray.h>
27 #include <ScopedUtfChars.h>
28 #include <android_runtime/android_util_AssetManager.h>
29 #include <androidfw/AssetManager.h>
30 #include "Utils.h"
31
32 #include "TypefaceImpl.h"
33 #include <minikin/FontFamily.h>
34 #include "MinikinSkia.h"
35
36 namespace android {
37
FontFamily_create(JNIEnv * env,jobject clazz,jstring lang,jint variant)38 static jlong FontFamily_create(JNIEnv* env, jobject clazz, jstring lang, jint variant) {
39 FontLanguage fontLanguage;
40 if (lang != NULL) {
41 ScopedUtfChars str(env, lang);
42 fontLanguage = FontLanguage(str.c_str(), str.size());
43 }
44 return (jlong)new FontFamily(fontLanguage, variant);
45 }
46
FontFamily_unref(JNIEnv * env,jobject clazz,jlong familyPtr)47 static void FontFamily_unref(JNIEnv* env, jobject clazz, jlong familyPtr) {
48 FontFamily* fontFamily = reinterpret_cast<FontFamily*>(familyPtr);
49 fontFamily->Unref();
50 }
51
addSkTypeface(FontFamily * family,SkTypeface * face)52 static jboolean addSkTypeface(FontFamily* family, SkTypeface* face) {
53 MinikinFont* minikinFont = new MinikinFontSkia(face);
54 bool result = family->addFont(minikinFont);
55 minikinFont->Unref();
56 return result;
57 }
58
FontFamily_addFont(JNIEnv * env,jobject clazz,jlong familyPtr,jstring path)59 static jboolean FontFamily_addFont(JNIEnv* env, jobject clazz, jlong familyPtr, jstring path) {
60 NPE_CHECK_RETURN_ZERO(env, path);
61 ScopedUtfChars str(env, path);
62 SkTypeface* face = SkTypeface::CreateFromFile(str.c_str());
63 if (face == NULL) {
64 ALOGE("addFont failed to create font %s", str.c_str());
65 return false;
66 }
67 FontFamily* fontFamily = reinterpret_cast<FontFamily*>(familyPtr);
68 return addSkTypeface(fontFamily, face);
69 }
70
FontFamily_addFontWeightStyle(JNIEnv * env,jobject clazz,jlong familyPtr,jstring path,jint weight,jboolean isItalic)71 static jboolean FontFamily_addFontWeightStyle(JNIEnv* env, jobject clazz, jlong familyPtr,
72 jstring path, jint weight, jboolean isItalic) {
73 NPE_CHECK_RETURN_ZERO(env, path);
74 ScopedUtfChars str(env, path);
75 SkTypeface* face = SkTypeface::CreateFromFile(str.c_str());
76 if (face == NULL) {
77 ALOGE("addFont failed to create font %s", str.c_str());
78 return false;
79 }
80 FontFamily* fontFamily = reinterpret_cast<FontFamily*>(familyPtr);
81 MinikinFont* minikinFont = new MinikinFontSkia(face);
82 fontFamily->addFont(minikinFont, FontStyle(weight / 100, isItalic));
83 minikinFont->Unref();
84 return true;
85 }
86
releaseAsset(const void * ptr,size_t length,void * context)87 static void releaseAsset(const void* ptr, size_t length, void* context) {
88 delete static_cast<Asset*>(context);
89 }
90
FontFamily_addFontFromAsset(JNIEnv * env,jobject,jlong familyPtr,jobject jassetMgr,jstring jpath)91 static jboolean FontFamily_addFontFromAsset(JNIEnv* env, jobject, jlong familyPtr,
92 jobject jassetMgr, jstring jpath) {
93 NPE_CHECK_RETURN_ZERO(env, jassetMgr);
94 NPE_CHECK_RETURN_ZERO(env, jpath);
95
96 AssetManager* mgr = assetManagerForJavaObject(env, jassetMgr);
97 if (NULL == mgr) {
98 return false;
99 }
100
101 ScopedUtfChars str(env, jpath);
102 Asset* asset = mgr->open(str.c_str(), Asset::ACCESS_BUFFER);
103 if (NULL == asset) {
104 return false;
105 }
106
107 const void* buf = asset->getBuffer(false);
108 if (NULL == buf) {
109 delete asset;
110 return false;
111 }
112
113 SkAutoTUnref<SkData> data(SkData::NewWithProc(buf, asset->getLength(), releaseAsset, asset));
114 SkMemoryStream* stream = new SkMemoryStream(data);
115 // CreateFromStream takes ownership of stream.
116 SkTypeface* face = SkTypeface::CreateFromStream(stream);
117 if (face == NULL) {
118 ALOGE("addFontFromAsset failed to create font %s", str.c_str());
119 return false;
120 }
121 FontFamily* fontFamily = reinterpret_cast<FontFamily*>(familyPtr);
122 return addSkTypeface(fontFamily, face);
123 }
124
125 ///////////////////////////////////////////////////////////////////////////////
126
127 static JNINativeMethod gFontFamilyMethods[] = {
128 { "nCreateFamily", "(Ljava/lang/String;I)J", (void*)FontFamily_create },
129 { "nUnrefFamily", "(J)V", (void*)FontFamily_unref },
130 { "nAddFont", "(JLjava/lang/String;)Z", (void*)FontFamily_addFont },
131 { "nAddFontWeightStyle", "(JLjava/lang/String;IZ)Z", (void*)FontFamily_addFontWeightStyle },
132 { "nAddFontFromAsset", "(JLandroid/content/res/AssetManager;Ljava/lang/String;)Z",
133 (void*)FontFamily_addFontFromAsset },
134 };
135
register_android_graphics_FontFamily(JNIEnv * env)136 int register_android_graphics_FontFamily(JNIEnv* env)
137 {
138 return RegisterMethodsOrDie(env, "android/graphics/FontFamily", gFontFamilyMethods,
139 NELEM(gFontFamilyMethods));
140 }
141
142 }
143