1 /*
2 * Copyright (C) 2020 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 #include "graphics_jni_helpers.h"
18
19 #include <GraphicsJNI.h>
20 #include <SkGraphics.h>
21
22 #include <sstream>
23 #include <iostream>
24 #include <unicode/putil.h>
25 #include <unordered_map>
26 #include <vector>
27
28 using namespace std;
29
30 /*
31 * This is responsible for setting up the JNI environment for communication between
32 * the Java and native parts of layoutlib, including registering native methods.
33 * This is mostly achieved by copying the way it is done in the platform
34 * (see AndroidRuntime.cpp).
35 */
36
37 static JavaVM* javaVM;
38
39 extern int register_android_graphics_Bitmap(JNIEnv*);
40 extern int register_android_graphics_BitmapFactory(JNIEnv*);
41 extern int register_android_graphics_ByteBufferStreamAdaptor(JNIEnv* env);
42 extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env);
43 extern int register_android_graphics_Graphics(JNIEnv* env);
44 extern int register_android_graphics_ImageDecoder(JNIEnv*);
45 extern int register_android_graphics_Interpolator(JNIEnv* env);
46 extern int register_android_graphics_MaskFilter(JNIEnv* env);
47 extern int register_android_graphics_NinePatch(JNIEnv*);
48 extern int register_android_graphics_PathEffect(JNIEnv* env);
49 extern int register_android_graphics_Shader(JNIEnv* env);
50 extern int register_android_graphics_Typeface(JNIEnv* env);
51
52 namespace android {
53
54 extern int register_android_graphics_Canvas(JNIEnv* env);
55 extern int register_android_graphics_ColorFilter(JNIEnv* env);
56 extern int register_android_graphics_ColorSpace(JNIEnv* env);
57 extern int register_android_graphics_DrawFilter(JNIEnv* env);
58 extern int register_android_graphics_FontFamily(JNIEnv* env);
59 extern int register_android_graphics_Matrix(JNIEnv* env);
60 extern int register_android_graphics_Paint(JNIEnv* env);
61 extern int register_android_graphics_Path(JNIEnv* env);
62 extern int register_android_graphics_PathMeasure(JNIEnv* env);
63 extern int register_android_graphics_Picture(JNIEnv* env);
64 //extern int register_android_graphics_Region(JNIEnv* env);
65 extern int register_android_graphics_animation_NativeInterpolatorFactory(JNIEnv* env);
66 extern int register_android_graphics_animation_RenderNodeAnimator(JNIEnv* env);
67 extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env);
68 extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env);
69 extern int register_android_graphics_fonts_Font(JNIEnv* env);
70 extern int register_android_graphics_fonts_FontFamily(JNIEnv* env);
71 extern int register_android_graphics_text_LineBreaker(JNIEnv* env);
72 extern int register_android_graphics_text_MeasuredText(JNIEnv* env);
73 extern int register_android_util_PathParser(JNIEnv* env);
74 extern int register_android_view_RenderNode(JNIEnv* env);
75 extern int register_android_view_DisplayListCanvas(JNIEnv* env);
76
77 #define REG_JNI(name) { name }
78 struct RegJNIRec {
79 int (*mProc)(JNIEnv*);
80 };
81
82 // Map of all possible class names to register to their corresponding JNI registration function pointer
83 // The actual list of registered classes will be determined at runtime via the 'native_classes' System property
84 static const std::unordered_map<std::string, RegJNIRec> gRegJNIMap = {
85 {"android.graphics.Bitmap", REG_JNI(register_android_graphics_Bitmap)},
86 {"android.graphics.BitmapFactory", REG_JNI(register_android_graphics_BitmapFactory)},
87 {"android.graphics.ByteBufferStreamAdaptor",
88 REG_JNI(register_android_graphics_ByteBufferStreamAdaptor)},
89 {"android.graphics.Canvas", REG_JNI(register_android_graphics_Canvas)},
90 {"android.graphics.RenderNode", REG_JNI(register_android_view_RenderNode)},
91 {"android.graphics.ColorFilter", REG_JNI(register_android_graphics_ColorFilter)},
92 {"android.graphics.ColorSpace", REG_JNI(register_android_graphics_ColorSpace)},
93 {"android.graphics.CreateJavaOutputStreamAdaptor",
94 REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor)},
95 {"android.graphics.DrawFilter", REG_JNI(register_android_graphics_DrawFilter)},
96 {"android.graphics.FontFamily", REG_JNI(register_android_graphics_FontFamily)},
97 {"android.graphics.Graphics", REG_JNI(register_android_graphics_Graphics)},
98 {"android.graphics.ImageDecoder", REG_JNI(register_android_graphics_ImageDecoder)},
99 {"android.graphics.Interpolator", REG_JNI(register_android_graphics_Interpolator)},
100 {"android.graphics.MaskFilter", REG_JNI(register_android_graphics_MaskFilter)},
101 {"android.graphics.Matrix", REG_JNI(register_android_graphics_Matrix)},
102 {"android.graphics.NinePatch", REG_JNI(register_android_graphics_NinePatch)},
103 {"android.graphics.Paint", REG_JNI(register_android_graphics_Paint)},
104 {"android.graphics.Path", REG_JNI(register_android_graphics_Path)},
105 {"android.graphics.PathEffect", REG_JNI(register_android_graphics_PathEffect)},
106 {"android.graphics.PathMeasure", REG_JNI(register_android_graphics_PathMeasure)},
107 {"android.graphics.Picture", REG_JNI(register_android_graphics_Picture)},
108 {"android.graphics.RecordingCanvas", REG_JNI(register_android_view_DisplayListCanvas)},
109 // {"android.graphics.Region", REG_JNI(register_android_graphics_Region)},
110 {"android.graphics.Shader", REG_JNI(register_android_graphics_Shader)},
111 {"android.graphics.Typeface", REG_JNI(register_android_graphics_Typeface)},
112 {"android.graphics.animation.NativeInterpolatorFactory",
113 REG_JNI(register_android_graphics_animation_NativeInterpolatorFactory)},
114 {"android.graphics.animation.RenderNodeAnimator",
115 REG_JNI(register_android_graphics_animation_RenderNodeAnimator)},
116 {"android.graphics.drawable.AnimatedVectorDrawable",
117 REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable)},
118 {"android.graphics.drawable.VectorDrawable",
119 REG_JNI(register_android_graphics_drawable_VectorDrawable)},
120 {"android.graphics.fonts.Font", REG_JNI(register_android_graphics_fonts_Font)},
121 {"android.graphics.fonts.FontFamily", REG_JNI(register_android_graphics_fonts_FontFamily)},
122 {"android.graphics.text.LineBreaker", REG_JNI(register_android_graphics_text_LineBreaker)},
123 {"android.graphics.text.MeasuredText",
124 REG_JNI(register_android_graphics_text_MeasuredText)},
125 {"android.util.PathParser", REG_JNI(register_android_util_PathParser)},
126 };
127
register_jni_procs(const std::unordered_map<std::string,RegJNIRec> & jniRegMap,const vector<string> & classesToRegister,JNIEnv * env)128 static int register_jni_procs(const std::unordered_map<std::string, RegJNIRec>& jniRegMap,
129 const vector<string>& classesToRegister, JNIEnv* env) {
130
131 for (const string& className : classesToRegister) {
132 if (jniRegMap.at(className).mProc(env) < 0) {
133 return -1;
134 }
135 }
136 return 0;
137 }
138
parseCsv(const string & csvString)139 static vector<string> parseCsv(const string& csvString) {
140 vector<string> result;
141 istringstream stream(csvString);
142 string segment;
143 while(getline(stream, segment, ','))
144 {
145 result.push_back(segment);
146 }
147 return result;
148 }
149
parseCsv(JNIEnv * env,jstring csvJString)150 static vector<string> parseCsv(JNIEnv* env, jstring csvJString) {
151 const char* charArray = env->GetStringUTFChars(csvJString, 0);
152 string csvString(charArray);
153 vector<string> result = parseCsv(csvString);
154 env->ReleaseStringUTFChars(csvJString, charArray);
155 return result;
156 }
157
158 } // namespace android
159
160 using namespace android;
161
init_android_graphics()162 void init_android_graphics() {
163 SkGraphics::Init();
164 }
165
register_android_graphics_classes(JNIEnv * env)166 int register_android_graphics_classes(JNIEnv *env) {
167 JavaVM* vm = nullptr;
168 env->GetJavaVM(&vm);
169 GraphicsJNI::setJavaVM(vm);
170
171 // Configuration is stored as java System properties.
172 // Get a reference to System.getProperty
173 jclass system = FindClassOrDie(env, "java/lang/System");
174 jmethodID getPropertyMethod = GetStaticMethodIDOrDie(env, system, "getProperty",
175 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;");
176
177 // Get the names of classes that need to register their native methods
178 auto nativesClassesJString =
179 (jstring) env->CallStaticObjectMethod(system,
180 getPropertyMethod, env->NewStringUTF("native_classes"),
181 env->NewStringUTF(""));
182 vector<string> classesToRegister = parseCsv(env, nativesClassesJString);
183
184 if (register_jni_procs(gRegJNIMap, classesToRegister, env) < 0) {
185 return JNI_ERR;
186 }
187
188 return 0;
189 }
190
zygote_preload_graphics()191 void zygote_preload_graphics() { }
192