android_view_RenderNodeAnimator.cpp revision 389baa395125d5ae5aac3b9d2f98457dde09da26 
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
28#include "core_jni_helpers.h"
29
30namespace android {
31
32using namespace uirenderer;
33
34static struct {
35    jclass clazz;
36
37    jmethodID callOnFinished;
38} gRenderNodeAnimatorClassInfo;
39
40#ifdef USE_OPENGL_RENDERER
41
42static JNIEnv* getEnv(JavaVM* vm) {
43    JNIEnv* env;
44    if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
45        return 0;
46    }
47    return env;
48}
49
50class AnimationListenerLifecycleChecker : public AnimationListener {
51public:
52    virtual void onAnimationFinished(BaseRenderNodeAnimator* animator) {
53        LOG_ALWAYS_FATAL("Lifecycle failure, nStart(%p) wasn't called", animator);
54    }
55};
56
57static AnimationListenerLifecycleChecker sLifecycleChecker;
58
59class AnimationListenerBridge : public AnimationListener {
60public:
61    // This holds a strong reference to a Java WeakReference<T> object. This avoids
62    // cyclic-references-of-doom. If you think "I know, just use NewWeakGlobalRef!"
63    // then you end up with basically a PhantomReference, which is totally not
64    // what we want.
65    AnimationListenerBridge(JNIEnv* env, jobject finishListener) {
66        mFinishListener = env->NewGlobalRef(finishListener);
67        env->GetJavaVM(&mJvm);
68    }
69
70    virtual ~AnimationListenerBridge() {
71        if (mFinishListener) {
72            onAnimationFinished(NULL);
73        }
74    }
75
76    virtual void onAnimationFinished(BaseRenderNodeAnimator*) {
77        LOG_ALWAYS_FATAL_IF(!mFinishListener, "Finished listener twice?");
78        JNIEnv* env = getEnv(mJvm);
79        env->CallStaticVoidMethod(
80                gRenderNodeAnimatorClassInfo.clazz,
81                gRenderNodeAnimatorClassInfo.callOnFinished,
82                mFinishListener);
83        releaseJavaObject();
84    }
85
86private:
87    void releaseJavaObject() {
88        JNIEnv* env = getEnv(mJvm);
89        env->DeleteGlobalRef(mFinishListener);
90        mFinishListener = NULL;
91    }
92
93    JavaVM* mJvm;
94    jobject mFinishListener;
95};
96
97static inline RenderPropertyAnimator::RenderProperty toRenderProperty(jint property) {
98    LOG_ALWAYS_FATAL_IF(property < 0 || property > RenderPropertyAnimator::ALPHA,
99            "Invalid property %d", property);
100    return static_cast<RenderPropertyAnimator::RenderProperty>(property);
101}
102
103static inline CanvasPropertyPaintAnimator::PaintField toPaintField(jint field) {
104    LOG_ALWAYS_FATAL_IF(field < 0
105            || field > CanvasPropertyPaintAnimator::ALPHA,
106            "Invalid paint field %d", field);
107    return static_cast<CanvasPropertyPaintAnimator::PaintField>(field);
108}
109
110static jlong createAnimator(JNIEnv* env, jobject clazz,
111        jint propertyRaw, jfloat finalValue) {
112    RenderPropertyAnimator::RenderProperty property = toRenderProperty(propertyRaw);
113    BaseRenderNodeAnimator* animator = new RenderPropertyAnimator(property, finalValue);
114    animator->setListener(&sLifecycleChecker);
115    return reinterpret_cast<jlong>( animator );
116}
117
118static jlong createCanvasPropertyFloatAnimator(JNIEnv* env, jobject clazz,
119        jlong canvasPropertyPtr, jfloat finalValue) {
120    CanvasPropertyPrimitive* canvasProperty = reinterpret_cast<CanvasPropertyPrimitive*>(canvasPropertyPtr);
121    BaseRenderNodeAnimator* animator = new CanvasPropertyPrimitiveAnimator(canvasProperty, finalValue);
122    animator->setListener(&sLifecycleChecker);
123    return reinterpret_cast<jlong>( animator );
124}
125
126static jlong createCanvasPropertyPaintAnimator(JNIEnv* env, jobject clazz,
127        jlong canvasPropertyPtr, jint paintFieldRaw,
128        jfloat finalValue) {
129    CanvasPropertyPaint* canvasProperty = reinterpret_cast<CanvasPropertyPaint*>(canvasPropertyPtr);
130    CanvasPropertyPaintAnimator::PaintField paintField = toPaintField(paintFieldRaw);
131    BaseRenderNodeAnimator* animator = new CanvasPropertyPaintAnimator(
132            canvasProperty, paintField, finalValue);
133    animator->setListener(&sLifecycleChecker);
134    return reinterpret_cast<jlong>( animator );
135}
136
137static jlong createRevealAnimator(JNIEnv* env, jobject clazz,
138        jint centerX, jint centerY, jfloat startRadius, jfloat endRadius) {
139    BaseRenderNodeAnimator* animator = new RevealAnimator(centerX, centerY, startRadius, endRadius);
140    animator->setListener(&sLifecycleChecker);
141    return reinterpret_cast<jlong>( animator );
142}
143
144static void setStartValue(JNIEnv* env, jobject clazz, jlong animatorPtr, jfloat startValue) {
145    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
146    animator->setStartValue(startValue);
147}
148
149static void setDuration(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong duration) {
150    LOG_ALWAYS_FATAL_IF(duration < 0, "Duration cannot be negative");
151    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
152    animator->setDuration(duration);
153}
154
155static jlong getDuration(JNIEnv* env, jobject clazz, jlong animatorPtr) {
156    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
157    return static_cast<jlong>(animator->duration());
158}
159
160static void setStartDelay(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong startDelay) {
161    LOG_ALWAYS_FATAL_IF(startDelay < 0, "Start delay cannot be negative");
162    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
163    animator->setStartDelay(startDelay);
164}
165
166static void setInterpolator(JNIEnv* env, jobject clazz, jlong animatorPtr, jlong interpolatorPtr) {
167    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
168    Interpolator* interpolator = reinterpret_cast<Interpolator*>(interpolatorPtr);
169    animator->setInterpolator(interpolator);
170}
171
172static void setAllowRunningAsync(JNIEnv* env, jobject clazz, jlong animatorPtr, jboolean mayRunAsync) {
173    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
174    animator->setAllowRunningAsync(mayRunAsync);
175}
176
177static void setListener(JNIEnv* env, jobject clazz, jlong animatorPtr, jobject finishListener) {
178    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
179    animator->setListener(new AnimationListenerBridge(env, finishListener));
180}
181
182static void start(JNIEnv* env, jobject clazz, jlong animatorPtr) {
183    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
184    animator->start();
185}
186
187static void end(JNIEnv* env, jobject clazz, jlong animatorPtr) {
188    BaseRenderNodeAnimator* animator = reinterpret_cast<BaseRenderNodeAnimator*>(animatorPtr);
189    animator->end();
190}
191
192#endif
193
194// ----------------------------------------------------------------------------
195// JNI Glue
196// ----------------------------------------------------------------------------
197
198const char* const kClassPathName = "android/view/RenderNodeAnimator";
199
200static JNINativeMethod gMethods[] = {
201#ifdef USE_OPENGL_RENDERER
202    { "nCreateAnimator", "(IF)J", (void*) createAnimator },
203    { "nCreateCanvasPropertyFloatAnimator", "(JF)J", (void*) createCanvasPropertyFloatAnimator },
204    { "nCreateCanvasPropertyPaintAnimator", "(JIF)J", (void*) createCanvasPropertyPaintAnimator },
205    { "nCreateRevealAnimator", "(IIFF)J", (void*) createRevealAnimator },
206    { "nSetStartValue", "(JF)V", (void*) setStartValue },
207    { "nSetDuration", "(JJ)V", (void*) setDuration },
208    { "nGetDuration", "(J)J", (void*) getDuration },
209    { "nSetStartDelay", "(JJ)V", (void*) setStartDelay },
210    { "nSetInterpolator", "(JJ)V", (void*) setInterpolator },
211    { "nSetAllowRunningAsync", "(JZ)V", (void*) setAllowRunningAsync },
212    { "nSetListener", "(JLandroid/view/RenderNodeAnimator;)V", (void*) setListener},
213    { "nStart", "(J)V", (void*) start},
214    { "nEnd", "(J)V", (void*) end },
215#endif
216};
217
218int register_android_view_RenderNodeAnimator(JNIEnv* env) {
219#ifdef USE_OPENGL_RENDERER
220    sLifecycleChecker.incStrong(0);
221#endif
222    gRenderNodeAnimatorClassInfo.clazz = FindClassOrDie(env, kClassPathName);
223    gRenderNodeAnimatorClassInfo.clazz = MakeGlobalRefOrDie(env,
224                                                            gRenderNodeAnimatorClassInfo.clazz);
225
226    gRenderNodeAnimatorClassInfo.callOnFinished = GetStaticMethodIDOrDie(
227            env, gRenderNodeAnimatorClassInfo.clazz, "callOnFinished",
228            "(Landroid/view/RenderNodeAnimator;)V");
229
230    return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));
231}
232
233
234} // namespace android
235