hwui/jni/android_graphics_DisplayListCanvas.cpp

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "GraphicsJNI.h"

#ifdef __ANDROID__ // Layoutlib does not support Looper and device properties
#include <utils/Looper.h>
#endif

#include <SkRegion.h>
#include <SkRuntimeEffect.h>

#include <Rect.h>
#include <RenderNode.h>
#include <CanvasProperty.h>
#include <hwui/Canvas.h>
#include <hwui/Paint.h>
#include <minikin/Layout.h>
#ifdef __ANDROID__ // Layoutlib does not support RenderThread
#include <renderthread/RenderProxy.h>
#endif

namespace android {

using namespace uirenderer;

jmethodID gRunnableMethodId;

static JNIEnv* jnienv(JavaVM* vm) {
    JNIEnv* env;
    if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
        LOG_ALWAYS_FATAL("Failed to get JNIEnv for JavaVM: %p", vm);
    }
    return env;
}

#ifdef __ANDROID__ // Layoutlib does not support GL, Looper
class InvokeRunnableMessage : public MessageHandler {
public:
    InvokeRunnableMessage(JNIEnv* env, jobject runnable) {
        mRunnable = env->NewGlobalRef(runnable);
        env->GetJavaVM(&mVm);
    }

    virtual ~InvokeRunnableMessage() {
        jnienv(mVm)->DeleteGlobalRef(mRunnable);
    }

    virtual void handleMessage(const Message&) {
        jnienv(mVm)->CallVoidMethod(mRunnable, gRunnableMethodId);
    }

private:
    JavaVM* mVm;
    jobject mRunnable;
};
#endif

// ---------------- @CriticalNative -------------------------

static jlong android_view_DisplayListCanvas_createDisplayListCanvas(CRITICAL_JNI_PARAMS_COMMA jlong renderNodePtr,
        jint width, jint height) {
    RenderNode* renderNode = reinterpret_cast<RenderNode*>(renderNodePtr);
    return reinterpret_cast<jlong>(Canvas::create_recording_canvas(width, height, renderNode));
}

static void android_view_DisplayListCanvas_resetDisplayListCanvas(CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr,
        jlong renderNodePtr, jint width, jint height) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    RenderNode* renderNode = reinterpret_cast<RenderNode*>(renderNodePtr);
    canvas->resetRecording(width, height, renderNode);
}

static jint android_view_DisplayListCanvas_getMaxTextureSize(CRITICAL_JNI_PARAMS) {
#ifdef __ANDROID__ // Layoutlib does not support RenderProxy (RenderThread)
    return android::uirenderer::renderthread::RenderProxy::maxTextureSize();
#else
    return 4096;
#endif
}

static void android_view_DisplayListCanvas_enableZ(CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr,
        jboolean reorderEnable) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    canvas->enableZ(reorderEnable);
}

static void android_view_DisplayListCanvas_finishRecording(
        CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr, jlong renderNodePtr) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    RenderNode* renderNode = reinterpret_cast<RenderNode*>(renderNodePtr);
    canvas->finishRecording(renderNode);
}

static void android_view_DisplayListCanvas_drawRenderNode(CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr, jlong renderNodePtr) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    RenderNode* renderNode = reinterpret_cast<RenderNode*>(renderNodePtr);
    canvas->drawRenderNode(renderNode);
}

static void android_view_DisplayListCanvas_drawTextureLayer(CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr, jlong layerPtr) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerPtr);
    canvas->drawLayer(layer);
}

static void android_view_DisplayListCanvas_drawRoundRectProps(CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr,
        jlong leftPropPtr, jlong topPropPtr, jlong rightPropPtr, jlong bottomPropPtr,
        jlong rxPropPtr, jlong ryPropPtr, jlong paintPropPtr) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    CanvasPropertyPrimitive* leftProp = reinterpret_cast<CanvasPropertyPrimitive*>(leftPropPtr);
    CanvasPropertyPrimitive* topProp = reinterpret_cast<CanvasPropertyPrimitive*>(topPropPtr);
    CanvasPropertyPrimitive* rightProp = reinterpret_cast<CanvasPropertyPrimitive*>(rightPropPtr);
    CanvasPropertyPrimitive* bottomProp = reinterpret_cast<CanvasPropertyPrimitive*>(bottomPropPtr);
    CanvasPropertyPrimitive* rxProp = reinterpret_cast<CanvasPropertyPrimitive*>(rxPropPtr);
    CanvasPropertyPrimitive* ryProp = reinterpret_cast<CanvasPropertyPrimitive*>(ryPropPtr);
    CanvasPropertyPaint* paintProp = reinterpret_cast<CanvasPropertyPaint*>(paintPropPtr);
    canvas->drawRoundRect(leftProp, topProp, rightProp, bottomProp, rxProp, ryProp, paintProp);
}

static void android_view_DisplayListCanvas_drawCircleProps(CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr,
        jlong xPropPtr, jlong yPropPtr, jlong radiusPropPtr, jlong paintPropPtr) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    CanvasPropertyPrimitive* xProp = reinterpret_cast<CanvasPropertyPrimitive*>(xPropPtr);
    CanvasPropertyPrimitive* yProp = reinterpret_cast<CanvasPropertyPrimitive*>(yPropPtr);
    CanvasPropertyPrimitive* radiusProp = reinterpret_cast<CanvasPropertyPrimitive*>(radiusPropPtr);
    CanvasPropertyPaint* paintProp = reinterpret_cast<CanvasPropertyPaint*>(paintPropPtr);
    canvas->drawCircle(xProp, yProp, radiusProp, paintProp);
}

static void android_view_DisplayListCanvas_drawRippleProps(
        CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr, jlong xPropPtr, jlong yPropPtr,
        jlong radiusPropPtr, jlong paintPropPtr, jlong progressPropPtr, jlong turbulencePhasePtr,
        jint color, jlong builderPtr) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    CanvasPropertyPrimitive* xProp = reinterpret_cast<CanvasPropertyPrimitive*>(xPropPtr);
    CanvasPropertyPrimitive* yProp = reinterpret_cast<CanvasPropertyPrimitive*>(yPropPtr);
    CanvasPropertyPrimitive* radiusProp = reinterpret_cast<CanvasPropertyPrimitive*>(radiusPropPtr);
    CanvasPropertyPrimitive* turbulencePhaseProp =
            reinterpret_cast<CanvasPropertyPrimitive*>(turbulencePhasePtr);
    CanvasPropertyPaint* paintProp = reinterpret_cast<CanvasPropertyPaint*>(paintPropPtr);
    CanvasPropertyPrimitive* progressProp =
            reinterpret_cast<CanvasPropertyPrimitive*>(progressPropPtr);
    SkRuntimeShaderBuilder* builder = reinterpret_cast<SkRuntimeShaderBuilder*>(builderPtr);

    const uirenderer::skiapipeline::RippleDrawableParams params =
            uirenderer::skiapipeline::RippleDrawableParams{
                    xProp,          yProp,     radiusProp, progressProp, turbulencePhaseProp,
                    (SkColor)color, paintProp, *builder};
    canvas->drawRipple(params);
}

static void android_view_DisplayListCanvas_drawWebViewFunctor(CRITICAL_JNI_PARAMS_COMMA jlong canvasPtr, jint functor) {
    Canvas* canvas = reinterpret_cast<Canvas*>(canvasPtr);
    canvas->drawWebViewFunctor(functor);
}

// ----------------------------------------------------------------------------
// JNI Glue
// ----------------------------------------------------------------------------

const char* const kClassPathName = "android/graphics/RecordingCanvas";

static JNINativeMethod gMethods[] = {
        // ------------ @CriticalNative --------------
        {"nCreateDisplayListCanvas", "(JII)J",
         (void*)android_view_DisplayListCanvas_createDisplayListCanvas},
        {"nResetDisplayListCanvas", "(JJII)V",
         (void*)android_view_DisplayListCanvas_resetDisplayListCanvas},
        {"nGetMaximumTextureWidth", "()I", (void*)android_view_DisplayListCanvas_getMaxTextureSize},
        {"nGetMaximumTextureHeight", "()I",
         (void*)android_view_DisplayListCanvas_getMaxTextureSize},
        {"nEnableZ", "(JZ)V", (void*)android_view_DisplayListCanvas_enableZ},
        {"nFinishRecording", "(JJ)V", (void*)android_view_DisplayListCanvas_finishRecording},
        {"nDrawRenderNode", "(JJ)V", (void*)android_view_DisplayListCanvas_drawRenderNode},
        {"nDrawTextureLayer", "(JJ)V", (void*)android_view_DisplayListCanvas_drawTextureLayer},
        {"nDrawCircle", "(JJJJJ)V", (void*)android_view_DisplayListCanvas_drawCircleProps},
        {"nDrawRoundRect", "(JJJJJJJJ)V", (void*)android_view_DisplayListCanvas_drawRoundRectProps},
        {"nDrawWebViewFunctor", "(JI)V", (void*)android_view_DisplayListCanvas_drawWebViewFunctor},
        {"nDrawRipple", "(JJJJJJJIJ)V", (void*)android_view_DisplayListCanvas_drawRippleProps},
};

int register_android_view_DisplayListCanvas(JNIEnv* env) {
    jclass runnableClass = FindClassOrDie(env, "java/lang/Runnable");
    gRunnableMethodId = GetMethodIDOrDie(env, runnableClass, "run", "()V");

    return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));
}

};