The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | #include "jni.h" |
| 2 | #include <android_runtime/AndroidRuntime.h> |
| 3 | |
| 4 | #include "GraphicsJNI.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 5 | #include "SkStream.h" |
| 6 | #include "SkTypeface.h" |
Mathias Agopian | b13b9bd | 2012-02-17 18:27:36 -0800 | [diff] [blame] | 7 | #include <android_runtime/android_util_AssetManager.h> |
| 8 | #include <androidfw/AssetManager.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 9 | |
| 10 | using namespace android; |
| 11 | |
| 12 | class AutoJavaStringToUTF8 { |
| 13 | public: |
| 14 | AutoJavaStringToUTF8(JNIEnv* env, jstring str) : fEnv(env), fJStr(str) |
| 15 | { |
| 16 | fCStr = env->GetStringUTFChars(str, NULL); |
| 17 | } |
| 18 | ~AutoJavaStringToUTF8() |
| 19 | { |
| 20 | fEnv->ReleaseStringUTFChars(fJStr, fCStr); |
| 21 | } |
| 22 | const char* c_str() const { return fCStr; } |
| 23 | |
| 24 | private: |
| 25 | JNIEnv* fEnv; |
| 26 | jstring fJStr; |
| 27 | const char* fCStr; |
| 28 | }; |
| 29 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 30 | static jlong Typeface_create(JNIEnv* env, jobject, jstring name, |
| 31 | jint styleHandle) { |
| 32 | SkTypeface::Style style = static_cast<SkTypeface::Style>(styleHandle); |
Derek Sollenberger | 89ec829 | 2013-09-18 15:07:46 -0400 | [diff] [blame] | 33 | SkTypeface* face = NULL; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 34 | |
Derek Sollenberger | 89ec829 | 2013-09-18 15:07:46 -0400 | [diff] [blame] | 35 | if (NULL != name) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 36 | AutoJavaStringToUTF8 str(env, name); |
The Android Open Source Project | 4df2423 | 2009-03-05 14:34:35 -0800 | [diff] [blame] | 37 | face = SkTypeface::CreateFromName(str.c_str(), style); |
Raph Levien | 4f0064f | 2013-11-06 11:12:11 -0800 | [diff] [blame] | 38 | // Try to find the closest matching font, using the standard heuristic |
| 39 | if (NULL == face) { |
| 40 | face = SkTypeface::CreateFromName(str.c_str(), (SkTypeface::Style)(style ^ SkTypeface::kItalic)); |
| 41 | } |
| 42 | for (int i = 0; NULL == face && i < 4; i++) { |
| 43 | face = SkTypeface::CreateFromName(str.c_str(), (SkTypeface::Style)i); |
| 44 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 45 | } |
Derek Sollenberger | 89ec829 | 2013-09-18 15:07:46 -0400 | [diff] [blame] | 46 | |
| 47 | // return the default font at the best style if no exact match exists |
| 48 | if (NULL == face) { |
| 49 | face = SkTypeface::CreateFromName(NULL, style); |
| 50 | } |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 51 | return reinterpret_cast<jlong>(face); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 52 | } |
| 53 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 54 | static jlong Typeface_createFromTypeface(JNIEnv* env, jobject, jlong familyHandle, jint style) { |
| 55 | SkTypeface* family = reinterpret_cast<SkTypeface*>(familyHandle); |
Derek Sollenberger | fe8e21f | 2013-09-23 08:32:16 -0400 | [diff] [blame] | 56 | SkTypeface* face = SkTypeface::CreateFromTypeface(family, (SkTypeface::Style)style); |
Raph Levien | 4f0064f | 2013-11-06 11:12:11 -0800 | [diff] [blame] | 57 | // Try to find the closest matching font, using the standard heuristic |
| 58 | if (NULL == face) { |
| 59 | face = SkTypeface::CreateFromTypeface(family, (SkTypeface::Style)(style ^ SkTypeface::kItalic)); |
| 60 | } |
| 61 | for (int i = 0; NULL == face && i < 4; i++) { |
| 62 | face = SkTypeface::CreateFromTypeface(family, (SkTypeface::Style)i); |
| 63 | } |
Derek Sollenberger | fe8e21f | 2013-09-23 08:32:16 -0400 | [diff] [blame] | 64 | if (NULL == face) { |
| 65 | face = SkTypeface::CreateFromName(NULL, (SkTypeface::Style)style); |
| 66 | } |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 67 | return reinterpret_cast<jlong>(face); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 68 | } |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 69 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 70 | static void Typeface_unref(JNIEnv* env, jobject obj, jlong faceHandle) { |
| 71 | SkTypeface* face = reinterpret_cast<SkTypeface*>(faceHandle); |
Mike Reed | 31a69fd | 2009-12-14 14:57:01 -0500 | [diff] [blame] | 72 | SkSafeUnref(face); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 73 | } |
| 74 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 75 | static jint Typeface_getStyle(JNIEnv* env, jobject obj, jlong faceHandle) { |
| 76 | SkTypeface* face = reinterpret_cast<SkTypeface*>(faceHandle); |
| 77 | return static_cast<jint>(face->style()); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | class AssetStream : public SkStream { |
| 81 | public: |
| 82 | AssetStream(Asset* asset, bool hasMemoryBase) : fAsset(asset) |
| 83 | { |
| 84 | fMemoryBase = hasMemoryBase ? fAsset->getBuffer(false) : NULL; |
| 85 | } |
| 86 | |
| 87 | virtual ~AssetStream() |
| 88 | { |
| 89 | delete fAsset; |
| 90 | } |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 91 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 92 | virtual const void* getMemoryBase() |
| 93 | { |
| 94 | return fMemoryBase; |
| 95 | } |
| 96 | |
| 97 | virtual bool rewind() |
| 98 | { |
Kenny Root | ddb76c4 | 2010-11-24 12:56:06 -0800 | [diff] [blame] | 99 | off64_t pos = fAsset->seek(0, SEEK_SET); |
| 100 | return pos != (off64_t)-1; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 101 | } |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 102 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 103 | virtual size_t read(void* buffer, size_t size) |
| 104 | { |
| 105 | ssize_t amount; |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 106 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 107 | if (NULL == buffer) |
| 108 | { |
| 109 | if (0 == size) // caller is asking us for our total length |
| 110 | return fAsset->getLength(); |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 111 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 112 | // asset->seek returns new total offset |
| 113 | // we want to return amount that was skipped |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 114 | |
Kenny Root | ddb76c4 | 2010-11-24 12:56:06 -0800 | [diff] [blame] | 115 | off64_t oldOffset = fAsset->seek(0, SEEK_CUR); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 116 | if (-1 == oldOffset) |
| 117 | return 0; |
Kenny Root | ddb76c4 | 2010-11-24 12:56:06 -0800 | [diff] [blame] | 118 | off64_t newOffset = fAsset->seek(size, SEEK_CUR); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 119 | if (-1 == newOffset) |
| 120 | return 0; |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 121 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 122 | amount = newOffset - oldOffset; |
| 123 | } |
| 124 | else |
| 125 | { |
| 126 | amount = fAsset->read(buffer, size); |
| 127 | } |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 128 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 129 | if (amount < 0) |
| 130 | amount = 0; |
| 131 | return amount; |
| 132 | } |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 133 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 134 | private: |
| 135 | Asset* fAsset; |
| 136 | const void* fMemoryBase; |
| 137 | }; |
| 138 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 139 | static jlong Typeface_createFromAsset(JNIEnv* env, jobject, |
| 140 | jobject jassetMgr, |
| 141 | jstring jpath) { |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 142 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 143 | NPE_CHECK_RETURN_ZERO(env, jassetMgr); |
| 144 | NPE_CHECK_RETURN_ZERO(env, jpath); |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 145 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 146 | AssetManager* mgr = assetManagerForJavaObject(env, jassetMgr); |
| 147 | if (NULL == mgr) { |
| 148 | return NULL; |
| 149 | } |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 150 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 151 | AutoJavaStringToUTF8 str(env, jpath); |
| 152 | Asset* asset = mgr->open(str.c_str(), Asset::ACCESS_BUFFER); |
| 153 | if (NULL == asset) { |
| 154 | return NULL; |
| 155 | } |
Elliott Hughes | 4cb1753 | 2011-04-12 16:10:26 -0700 | [diff] [blame] | 156 | |
Romain Guy | a1db574 | 2010-07-20 13:09:13 -0700 | [diff] [blame] | 157 | SkStream* stream = new AssetStream(asset, true); |
| 158 | SkTypeface* face = SkTypeface::CreateFromStream(stream); |
| 159 | // SkTypeFace::CreateFromStream calls ref() on the stream, so we |
| 160 | // need to unref it here or it won't be freed later on |
| 161 | stream->unref(); |
| 162 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 163 | return reinterpret_cast<jlong>(face); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 164 | } |
| 165 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 166 | static jlong Typeface_createFromFile(JNIEnv* env, jobject, jstring jpath) { |
Romain Guy | a87a132 | 2009-05-12 13:22:18 -0700 | [diff] [blame] | 167 | NPE_CHECK_RETURN_ZERO(env, jpath); |
| 168 | |
| 169 | AutoJavaStringToUTF8 str(env, jpath); |
| 170 | |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 171 | return reinterpret_cast<jlong>(SkTypeface::CreateFromFile(str.c_str())); |
Romain Guy | a87a132 | 2009-05-12 13:22:18 -0700 | [diff] [blame] | 172 | } |
| 173 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 174 | /////////////////////////////////////////////////////////////////////////////// |
| 175 | |
| 176 | static JNINativeMethod gTypefaceMethods[] = { |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 177 | { "nativeCreate", "(Ljava/lang/String;I)J", (void*)Typeface_create }, |
| 178 | { "nativeCreateFromTypeface", "(JI)J", (void*)Typeface_createFromTypeface }, |
| 179 | { "nativeUnref", "(J)V", (void*)Typeface_unref }, |
| 180 | { "nativeGetStyle", "(J)I", (void*)Typeface_getStyle }, |
| 181 | { "nativeCreateFromAsset", "(Landroid/content/res/AssetManager;Ljava/lang/String;)J", |
Romain Guy | a87a132 | 2009-05-12 13:22:18 -0700 | [diff] [blame] | 182 | (void*)Typeface_createFromAsset }, |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 183 | { "nativeCreateFromFile", "(Ljava/lang/String;)J", |
Mike Reed | dbade9d | 2009-08-25 13:20:19 -0400 | [diff] [blame] | 184 | (void*)Typeface_createFromFile }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 185 | }; |
| 186 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 187 | int register_android_graphics_Typeface(JNIEnv* env) |
| 188 | { |
| 189 | return android::AndroidRuntime::registerNativeMethods(env, |
| 190 | "android/graphics/Typeface", |
| 191 | gTypefaceMethods, |
| 192 | SK_ARRAY_COUNT(gTypefaceMethods)); |
| 193 | } |