android_view_RenderNodeAnimator.cpp revision 72d6e4facb1abd81809fdaddbe42f41ad885189c 
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 AnimationListenerLifecycleChecker : public AnimationListener {
49public:
50    virtual void onAnimationFinished(BaseRenderNodeAnimator* animator) {
51        LOG_ALWAYS_FATAL("Lifecycle failure, nStart(%p) wasn't called", animator);
52    }
53};
54
55static AnimationListenerLifecycleChecker sLifecycleChecker;
56
57class AnimationListenerBridge : public AnimationListener {
58public:
59    // This holds a strong reference to a Java WeakReference<T> object. This avoids
60    // cyclic-references-of-doom. If you think "I know, just use NewWeakGlobalRef!"
61    // then you end up with basically a PhantomReference, which is totally not
62    // what we want.
63    AnimationListenerBridge(JNIEnv* env, jobject finishListener) {
64        mFinishListener = env->NewGlobalRef(finishListener);
65        env->GetJavaVM(&mJvm);
66    }
67
68    virtual ~AnimationListenerBridge() {
69        if (mFinishListener) {
70            onAnimationFinished(NULL);
71        }
72    }
73
74    virtual void onAnimationFinished(BaseRenderNodeAnimator*) {
75        LOG_ALWAYS_FATAL_IF(!mFinishListener, "Finished listener twice?");
76        JNIEnv* env = getEnv(mJvm);
77        env->CallStaticVoidMethod(
78                gRenderNodeAnimatorClassInfo.clazz,
79                gRenderNodeAnimatorClassInfo.callOnFinished,
80                mFinishListener);
81        releaseJavaObject();
82    }
83
84private:
85    void releaseJavaObject() {
86        JNIEnv* env = getEnv(mJvm);
87        env->DeleteGlobalRef(mFinishListener);
88        mFinishListener = NULL;
89    }
90
91    JavaVM* mJvm;
92    jobject mFinishListener;
93};
94
95static inline RenderPropertyAnimator::RenderProperty toRenderProperty(jint property) {
96    LOG_ALWAYS_FATAL_IF(property < 0 || property > RenderPropertyAnimator::ALPHA,
97            "Invalid property %d", property);
98    return static_cast<RenderPropertyAnimator::RenderProperty>(property);
99}
100
101static inline CanvasPropertyPaintAnimator::PaintField toPaintField(jint field) {
102    LOG_ALWAYS_FATAL_IF(field < 0
103            || field > CanvasPropertyPaintAnimator::ALPHA,
104            "Invalid paint field %d", field);
105    return static_cast<CanvasPropertyPaintAnimator::PaintField>(field);
106}
107
108static jlong createAnimator(JNIEnv* env, jobject clazz,
109        jint propertyRaw, jfloat finalValue) {
110    RenderPropertyAnimator::RenderProperty property = toRenderProperty(propertyRaw);
111    BaseRenderNodeAnimator* animator = new RenderPropertyAnimator(property, finalValue);
112    animator->setListener(&sLifecycleChecker);
113    return reinterpret_cast<jlong>( animator );
114}
115
116static jlong createCanvasPropertyFloatAnimator(JNIEnv* env, jobject clazz,
117        jlong canvasPropertyPtr, jfloat finalValue) {
118    CanvasPropertyPrimitive* canvasProperty = reinterpret_cast<CanvasPropertyPrimitive*>(canvasPropertyPtr);
119    BaseRenderNodeAnimator* animator = new CanvasPropertyPrimitiveAnimator(canvasProperty, finalValue);
120    animator->setListener(&sLifecycleChecker);
121    return reinterpret_cast<jlong>( animator );
122}
123
124static jlong createCanvasPropertyPaintAnimator(JNIEnv* env, jobject clazz,
125        jlong canvasPropertyPtr, jint paintFieldRaw,
126        jfloat finalValue) {
127    CanvasPropertyPaint* canvasProperty = reinterpret_cast<CanvasPropertyPaint*>(canvasPropertyPtr);
128    CanvasPropertyPaintAnimator::PaintField paintField = toPaintField(paintFieldRaw);
129    BaseRenderNodeAnimator* animator = new CanvasPropertyPaintAnimator(
130            canvasProperty, paintField, finalValue);
131    animator->setListener(&sLifecycleChecker);
132    return reinterpret_cast<jlong>( animator );
133}
134
135static jlong createRevealAnimator(JNIEnv* env, jobject clazz,
136        jint centerX, jint centerY, jfloat startRadius, jfloat endRadius) {
137    BaseRenderNodeAnimator* animator = new RevealAnimator(centerX, centerY, startRadius, endRadius);
138    animator->setListener(&sLifecycleChecker);
139    return reinterpret_cast<jlong>( animator );
140}
141
142static void setStartValue(JNIEnv* env, jobject clazz, jlong animatorPtr, jfloat startValue) {
143    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
144    animator->setStartValue(startValue);
145}
146
147static void setDuration(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong duration) {
148    LOG_ALWAYS_FATAL_IF(duration < 0, "Duration cannot be negative");
149    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
150    animator->setDuration(duration);
151}
152
153static jlong getDuration(JNIEnv* env, jobject clazz, jlong animatorPtr) {
154    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
155    return static_cast<jlong>(animator->duration());
156}
157
158static void setStartDelay(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong startDelay) {
159    LOG_ALWAYS_FATAL_IF(startDelay < 0, "Start delay cannot be negative");
160    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
161    animator->setStartDelay(startDelay);
162}
163
164static jlong getStartDelay(JNIEnv* env, jobject clazz, jlong animatorPtr) {
165    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
166    return static_cast<jlong>(animator->startDelay());
167}
168
169static void setInterpolator(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong interpolatorPtr) {
170    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
171    Interpolator* interpolator = reinterpret_cast<Interpolator*>(interpolatorPtr);
172    animator->setInterpolator(interpolator);
173}
174
175static void setAllowRunningAsync(JNIEnv* env, jobject clazz, jlong animatorPtr, jboolean mayRunAsync) {
176    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
177    animator->setAllowRunningAsync(mayRunAsync);
178}
179
180static void start(JNIEnv* env, jobject clazz, jlong animatorPtr, jobject finishListener) {
181    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
182    animator->setListener(new AnimationListenerBridge(env, finishListener));
183    animator->start();
184}
185
186static void end(JNIEnv* env, jobject clazz, jlong animatorPtr) {
187    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
188    animator->end();
189}
190
191#endif
192
193// ----------------------------------------------------------------------------
194// JNI Glue
195// ----------------------------------------------------------------------------
196
197const char* const kClassPathName = "android/view/RenderNodeAnimator";
198
199static JNINativeMethod gMethods[] = {
200#ifdef USE_OPENGL_RENDERER
201    { "nCreateAnimator", "(IF)J", (void*) createAnimator },
202    { "nCreateCanvasPropertyFloatAnimator", "(JF)J", (void*) createCanvasPropertyFloatAnimator },
203    { "nCreateCanvasPropertyPaintAnimator", "(JIF)J", (void*) createCanvasPropertyPaintAnimator },
204    { "nCreateRevealAnimator", "(IIFF)J", (void*) createRevealAnimator },
205    { "nSetStartValue", "(JF)V", (void*) setStartValue },
206    { "nSetDuration", "(JJ)V", (void*) setDuration },
207    { "nGetDuration", "(J)J", (void*) getDuration },
208    { "nSetStartDelay", "(JJ)V", (void*) setStartDelay },
209    { "nSetInterpolator", "(JJ)V", (void*) setInterpolator },
210    { "nSetAllowRunningAsync", "(JZ)V", (void*) setAllowRunningAsync },
211    { "nStart", "(JLandroid/view/RenderNodeAnimator;)V", (void*) start },
212    { "nEnd", "(J)V", (void*) end },
213#endif
214};
215
216#define FIND_CLASS(var, className) \
217        var = env->FindClass(className); \
218        LOG_FATAL_IF(! var, "Unable to find class " className);
219
220#define GET_STATIC_METHOD_ID(var, clazz, methodName, methodDescriptor) \
221        var = env->GetStaticMethodID(clazz, methodName, methodDescriptor); \
222        LOG_FATAL_IF(! var, "Unable to find method " methodName);
223
224int register_android_view_RenderNodeAnimator(JNIEnv* env) {
225#ifdef USE_OPENGL_RENDERER
226    sLifecycleChecker.incStrong(0);
227#endif
228    FIND_CLASS(gRenderNodeAnimatorClassInfo.clazz, kClassPathName);
229    gRenderNodeAnimatorClassInfo.clazz = jclass(env->NewGlobalRef(gRenderNodeAnimatorClassInfo.clazz));
230
231    GET_STATIC_METHOD_ID(gRenderNodeAnimatorClassInfo.callOnFinished, gRenderNodeAnimatorClassInfo.clazz,
232            "callOnFinished", "(Landroid/view/RenderNodeAnimator;)V");
233
234    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
235}
236
237
238} // namespace android
239