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_RenderEffect(JNIEnv* env);
51 extern int register_android_graphics_Typeface(JNIEnv* env);
52
53 namespace android {
54
55 extern int register_android_graphics_Canvas(JNIEnv* env);
56 extern int register_android_graphics_ColorFilter(JNIEnv* env);
57 extern int register_android_graphics_ColorSpace(JNIEnv* env);
58 extern int register_android_graphics_DrawFilter(JNIEnv* env);
59 extern int register_android_graphics_FontFamily(JNIEnv* env);
60 extern int register_android_graphics_Matrix(JNIEnv* env);
61 extern int register_android_graphics_Paint(JNIEnv* env);
62 extern int register_android_graphics_Path(JNIEnv* env);
63 extern int register_android_graphics_PathMeasure(JNIEnv* env);
64 extern int register_android_graphics_Picture(JNIEnv* env);
65 //extern int register_android_graphics_Region(JNIEnv* env);
66 extern int register_android_graphics_animation_NativeInterpolatorFactory(JNIEnv* env);
67 extern int register_android_graphics_animation_RenderNodeAnimator(JNIEnv* env);
68 extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env);
69 extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env);
70 extern int register_android_graphics_fonts_Font(JNIEnv* env);
71 extern int register_android_graphics_fonts_FontFamily(JNIEnv* env);
72 extern int register_android_graphics_text_LineBreaker(JNIEnv* env);
73 extern int register_android_graphics_text_MeasuredText(JNIEnv* env);
74 extern int register_android_util_PathParser(JNIEnv* env);
75 extern int register_android_view_RenderNode(JNIEnv* env);
76 extern int register_android_view_DisplayListCanvas(JNIEnv* env);
77
78 #define REG_JNI(name) { name }
79 struct RegJNIRec {
80 int (*mProc)(JNIEnv*);
81 };
82
83 // Map of all possible class names to register to their corresponding JNI registration function pointer
84 // The actual list of registered classes will be determined at runtime via the 'native_classes' System property
85 static const std::unordered_map<std::string, RegJNIRec> gRegJNIMap = {
86 {"android.graphics.Bitmap", REG_JNI(register_android_graphics_Bitmap)},
87 {"android.graphics.BitmapFactory", REG_JNI(register_android_graphics_BitmapFactory)},
88 {"android.graphics.ByteBufferStreamAdaptor",
89 REG_JNI(register_android_graphics_ByteBufferStreamAdaptor)},
90 {"android.graphics.Canvas", REG_JNI(register_android_graphics_Canvas)},
91 {"android.graphics.RenderNode", REG_JNI(register_android_view_RenderNode)},
92 {"android.graphics.ColorFilter", REG_JNI(register_android_graphics_ColorFilter)},
93 {"android.graphics.ColorSpace", REG_JNI(register_android_graphics_ColorSpace)},
94 {"android.graphics.CreateJavaOutputStreamAdaptor",
95 REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor)},
96 {"android.graphics.DrawFilter", REG_JNI(register_android_graphics_DrawFilter)},
97 {"android.graphics.FontFamily", REG_JNI(register_android_graphics_FontFamily)},
98 {"android.graphics.Graphics", REG_JNI(register_android_graphics_Graphics)},
99 {"android.graphics.ImageDecoder", REG_JNI(register_android_graphics_ImageDecoder)},
100 {"android.graphics.Interpolator", REG_JNI(register_android_graphics_Interpolator)},
101 {"android.graphics.MaskFilter", REG_JNI(register_android_graphics_MaskFilter)},
102 {"android.graphics.Matrix", REG_JNI(register_android_graphics_Matrix)},
103 {"android.graphics.NinePatch", REG_JNI(register_android_graphics_NinePatch)},
104 {"android.graphics.Paint", REG_JNI(register_android_graphics_Paint)},
105 {"android.graphics.Path", REG_JNI(register_android_graphics_Path)},
106 {"android.graphics.PathEffect", REG_JNI(register_android_graphics_PathEffect)},
107 {"android.graphics.PathMeasure", REG_JNI(register_android_graphics_PathMeasure)},
108 {"android.graphics.Picture", REG_JNI(register_android_graphics_Picture)},
109 {"android.graphics.RecordingCanvas", REG_JNI(register_android_view_DisplayListCanvas)},
110 // {"android.graphics.Region", REG_JNI(register_android_graphics_Region)},
111 {"android.graphics.Shader", REG_JNI(register_android_graphics_Shader)},
112 {"android.graphics.RenderEffect", REG_JNI(register_android_graphics_RenderEffect)},
113 {"android.graphics.Typeface", REG_JNI(register_android_graphics_Typeface)},
114 {"android.graphics.animation.NativeInterpolatorFactory",
115 REG_JNI(register_android_graphics_animation_NativeInterpolatorFactory)},
116 {"android.graphics.animation.RenderNodeAnimator",
117 REG_JNI(register_android_graphics_animation_RenderNodeAnimator)},
118 {"android.graphics.drawable.AnimatedVectorDrawable",
119 REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable)},
120 {"android.graphics.drawable.VectorDrawable",
121 REG_JNI(register_android_graphics_drawable_VectorDrawable)},
122 {"android.graphics.fonts.Font", REG_JNI(register_android_graphics_fonts_Font)},
123 {"android.graphics.fonts.FontFamily", REG_JNI(register_android_graphics_fonts_FontFamily)},
124 {"android.graphics.text.LineBreaker", REG_JNI(register_android_graphics_text_LineBreaker)},
125 {"android.graphics.text.MeasuredText",
126 REG_JNI(register_android_graphics_text_MeasuredText)},
127 {"android.util.PathParser", REG_JNI(register_android_util_PathParser)},
128 };
129
register_jni_procs(const std::unordered_map<std::string,RegJNIRec> & jniRegMap,const vector<string> & classesToRegister,JNIEnv * env)130 static int register_jni_procs(const std::unordered_map<std::string, RegJNIRec>& jniRegMap,
131 const vector<string>& classesToRegister, JNIEnv* env) {
132
133 for (const string& className : classesToRegister) {
134 if (jniRegMap.at(className).mProc(env) < 0) {
135 return -1;
136 }
137 }
138 return 0;
139 }
140
parseCsv(const string & csvString)141 static vector<string> parseCsv(const string& csvString) {
142 vector<string> result;
143 istringstream stream(csvString);
144 string segment;
145 while(getline(stream, segment, ','))
146 {
147 result.push_back(segment);
148 }
149 return result;
150 }
151
parseCsv(JNIEnv * env,jstring csvJString)152 static vector<string> parseCsv(JNIEnv* env, jstring csvJString) {
153 const char* charArray = env->GetStringUTFChars(csvJString, 0);
154 string csvString(charArray);
155 vector<string> result = parseCsv(csvString);
156 env->ReleaseStringUTFChars(csvJString, charArray);
157 return result;
158 }
159
160 } // namespace android
161
162 using namespace android;
163
init_android_graphics()164 void init_android_graphics() {
165 SkGraphics::Init();
166 }
167
register_android_graphics_classes(JNIEnv * env)168 int register_android_graphics_classes(JNIEnv *env) {
169 JavaVM* vm = nullptr;
170 env->GetJavaVM(&vm);
171 GraphicsJNI::setJavaVM(vm);
172
173 // Configuration is stored as java System properties.
174 // Get a reference to System.getProperty
175 jclass system = FindClassOrDie(env, "java/lang/System");
176 jmethodID getPropertyMethod = GetStaticMethodIDOrDie(env, system, "getProperty",
177 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;");
178
179 // Get the names of classes that need to register their native methods
180 auto nativesClassesJString =
181 (jstring) env->CallStaticObjectMethod(system,
182 getPropertyMethod, env->NewStringUTF("native_classes"),
183 env->NewStringUTF(""));
184 vector<string> classesToRegister = parseCsv(env, nativesClassesJString);
185
186 if (register_jni_procs(gRegJNIMap, classesToRegister, env) < 0) {
187 return JNI_ERR;
188 }
189
190 return 0;
191 }
192
zygote_preload_graphics()193 void zygote_preload_graphics() { }
194