android_view_RenderNodeAnimator.cpp revision c6b3264e16f1d2b72e7f9508559981ce9970157c
1/* 2 * Copyright (C) 2013 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 "OpenGLRenderer" 18 19#include "jni.h" 20#include "GraphicsJNI.h" 21#include <nativehelper/JNIHelp.h> 22#include <android_runtime/AndroidRuntime.h> 23 24#include <Animator.h> 25#include <Interpolator.h> 26#include <RenderProperties.h> 27 28namespace android { 29 30using namespace uirenderer; 31 32static struct { 33 jclass clazz; 34 35 jmethodID callOnFinished; 36} gRenderNodeAnimatorClassInfo; 37 38#ifdef USE_OPENGL_RENDERER 39 40static JNIEnv* getEnv(JavaVM* vm) { 41 JNIEnv* env; 42 if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) { 43 return 0; 44 } 45 return env; 46} 47 48class AnimationListenerBridge : public AnimationListener { 49public: 50 // This holds a strong reference to a Java WeakReference<T> object. This avoids 51 // cyclic-references-of-doom. If you think "I know, just use NewWeakGlobalRef!" 52 // then you end up with basically a PhantomReference, which is totally not 53 // what we want. 54 AnimationListenerBridge(JNIEnv* env, jobject weakThis) { 55 mWeakThis = env->NewGlobalRef(weakThis); 56 env->GetJavaVM(&mJvm); 57 } 58 59 virtual ~AnimationListenerBridge() { 60 JNIEnv* env = getEnv(mJvm); 61 env->DeleteGlobalRef(mWeakThis); 62 mWeakThis = NULL; 63 } 64 65 virtual void onAnimationFinished(BaseRenderNodeAnimator*) { 66 JNIEnv* env = getEnv(mJvm); 67 env->CallStaticVoidMethod( 68 gRenderNodeAnimatorClassInfo.clazz, 69 gRenderNodeAnimatorClassInfo.callOnFinished, 70 mWeakThis); 71 } 72 73private: 74 JavaVM* mJvm; 75 jobject mWeakThis; 76}; 77 78static inline RenderPropertyAnimator::RenderProperty toRenderProperty(jint property) { 79 LOG_ALWAYS_FATAL_IF(property < 0 || property > RenderPropertyAnimator::ALPHA, 80 "Invalid property %d", property); 81 return static_cast<RenderPropertyAnimator::RenderProperty>(property); 82} 83 84static inline CanvasPropertyPaintAnimator::PaintField toPaintField(jint field) { 85 LOG_ALWAYS_FATAL_IF(field < 0 86 || field > CanvasPropertyPaintAnimator::ALPHA, 87 "Invalid paint field %d", field); 88 return static_cast<CanvasPropertyPaintAnimator::PaintField>(field); 89} 90 91static jlong createAnimator(JNIEnv* env, jobject clazz, jobject weakThis, 92 jint propertyRaw, jfloat finalValue) { 93 RenderPropertyAnimator::RenderProperty property = toRenderProperty(propertyRaw); 94 95 BaseRenderNodeAnimator* animator = new RenderPropertyAnimator(property, finalValue); 96 animator->setListener(new AnimationListenerBridge(env, weakThis)); 97 return reinterpret_cast<jlong>( animator ); 98} 99 100static jlong createCanvasPropertyFloatAnimator(JNIEnv* env, jobject clazz, 101 jobject weakThis, jlong canvasPropertyPtr, jfloat finalValue) { 102 CanvasPropertyPrimitive* canvasProperty = reinterpret_cast<CanvasPropertyPrimitive*>(canvasPropertyPtr); 103 BaseRenderNodeAnimator* animator = new CanvasPropertyPrimitiveAnimator(canvasProperty, finalValue); 104 animator->setListener(new AnimationListenerBridge(env, weakThis)); 105 return reinterpret_cast<jlong>( animator ); 106} 107 108static jlong createCanvasPropertyPaintAnimator(JNIEnv* env, jobject clazz, 109 jobject weakThis, jlong canvasPropertyPtr, jint paintFieldRaw, 110 jfloat finalValue) { 111 CanvasPropertyPaint* canvasProperty = reinterpret_cast<CanvasPropertyPaint*>(canvasPropertyPtr); 112 CanvasPropertyPaintAnimator::PaintField paintField = toPaintField(paintFieldRaw); 113 BaseRenderNodeAnimator* animator = new CanvasPropertyPaintAnimator( 114 canvasProperty, paintField, finalValue); 115 animator->setListener(new AnimationListenerBridge(env, weakThis)); 116 return reinterpret_cast<jlong>( animator ); 117} 118 119static void setStartValue(JNIEnv* env, jobject clazz, jlong animatorPtr, jfloat startValue) { 120 BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr); 121 animator->setStartValue(startValue); 122} 123 124static void setDuration(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong duration) { 125 LOG_ALWAYS_FATAL_IF(duration < 0, "Duration cannot be negative"); 126 BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr); 127 animator->setDuration(duration); 128} 129 130static jlong getDuration(JNIEnv* env, jobject clazz, jlong animatorPtr) { 131 BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr); 132 return static_cast<jlong>(animator->duration()); 133} 134 135static void setStartDelay(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong startDelay) { 136 LOG_ALWAYS_FATAL_IF(startDelay < 0, "Start delay cannot be negative"); 137 BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr); 138 animator->setStartDelay(startDelay); 139} 140 141static jlong getStartDelay(JNIEnv* env, jobject clazz, jlong animatorPtr) { 142 BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr); 143 return static_cast<jlong>(animator->startDelay()); 144} 145 146static void setInterpolator(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong interpolatorPtr) { 147 BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr); 148 Interpolator* interpolator = reinterpret_cast<Interpolator*>(interpolatorPtr); 149 animator->setInterpolator(interpolator); 150} 151 152#endif 153 154// ---------------------------------------------------------------------------- 155// JNI Glue 156// ---------------------------------------------------------------------------- 157 158const char* const kClassPathName = "android/view/RenderNodeAnimator"; 159 160static JNINativeMethod gMethods[] = { 161#ifdef USE_OPENGL_RENDERER 162 { "nCreateAnimator", "(Ljava/lang/ref/WeakReference;IF)J", (void*) createAnimator }, 163 { "nCreateCanvasPropertyFloatAnimator", "(Ljava/lang/ref/WeakReference;JF)J", (void*) createCanvasPropertyFloatAnimator }, 164 { "nCreateCanvasPropertyPaintAnimator", "(Ljava/lang/ref/WeakReference;JIF)J", (void*) createCanvasPropertyPaintAnimator }, 165 { "nSetStartValue", "(JF)V", (void*) setStartValue }, 166 { "nSetDuration", "(JJ)V", (void*) setDuration }, 167 { "nGetDuration", "(J)J", (void*) getDuration }, 168 { "nSetStartDelay", "(JJ)V", (void*) setStartDelay }, 169 { "nGetStartDelay", "(J)J", (void*) getStartDelay }, 170 { "nSetInterpolator", "(JJ)V", (void*) setInterpolator }, 171#endif 172}; 173 174#define FIND_CLASS(var, className) \ 175 var = env->FindClass(className); \ 176 LOG_FATAL_IF(! var, "Unable to find class " className); 177 178#define GET_STATIC_METHOD_ID(var, clazz, methodName, methodDescriptor) \ 179 var = env->GetStaticMethodID(clazz, methodName, methodDescriptor); \ 180 LOG_FATAL_IF(! var, "Unable to find method " methodName); 181 182int register_android_view_RenderNodeAnimator(JNIEnv* env) { 183 FIND_CLASS(gRenderNodeAnimatorClassInfo.clazz, kClassPathName); 184 gRenderNodeAnimatorClassInfo.clazz = jclass(env->NewGlobalRef(gRenderNodeAnimatorClassInfo.clazz)); 185 186 GET_STATIC_METHOD_ID(gRenderNodeAnimatorClassInfo.callOnFinished, gRenderNodeAnimatorClassInfo.clazz, 187 "callOnFinished", "(Ljava/lang/ref/WeakReference;)V"); 188 189 return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); 190} 191 192 193} // namespace android 194