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      1 /* libs/android_runtime/android/graphics/Rasterizer.cpp
      2 **
      3 ** Copyright 2006, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 // This file was generated from the C++ include file: SkRasterizer.h
     19 // Any changes made to this file will be discarded by the build.
     20 // To change this file, either edit the include, or device/tools/gluemaker/main.cpp,
     21 // or one of the auxilary file specifications in device/tools/gluemaker.
     22 
     23 #include "jni.h"
     24 #include "GraphicsJNI.h"
     25 #include "SkLayerRasterizer.h"
     26 #include "core_jni_helpers.h"
     27 
     28 #include <hwui/Paint.h>
     29 
     30 // Rasterizer.java holds a pointer (jlong) to this guy
     31 class NativeRasterizer {
     32 public:
     33     NativeRasterizer() {}
     34     virtual ~NativeRasterizer() {}
     35 
     36     // Can return NULL, or a ref to the skia rasterizer.
     37     virtual SkRasterizer* refRasterizer() { return NULL; }
     38 };
     39 
     40 class NativeLayerRasterizer : public NativeRasterizer {
     41 public:
     42     SkLayerRasterizer::Builder fBuilder;
     43 
     44     virtual SkRasterizer* refRasterizer() {
     45         return fBuilder.snapshotRasterizer();
     46     }
     47 };
     48 
     49 SkRasterizer* GraphicsJNI::refNativeRasterizer(jlong rasterizerHandle) {
     50     NativeRasterizer* nr = reinterpret_cast<NativeRasterizer*>(rasterizerHandle);
     51     return nr ? nr->refRasterizer() : NULL;
     52 }
     53 
     54 ///////////////////////////////////////////////////////////////////////////////
     55 
     56 namespace android {
     57 
     58 class SkRasterizerGlue {
     59 public:
     60     static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
     61         delete reinterpret_cast<NativeRasterizer *>(objHandle);
     62     }
     63 };
     64 
     65 static const JNINativeMethod gRasterizerMethods[] = {
     66     {"finalizer", "(J)V", (void*) SkRasterizerGlue::finalizer}
     67 };
     68 
     69 int register_android_graphics_Rasterizer(JNIEnv* env) {
     70     return RegisterMethodsOrDie(env, "android/graphics/Rasterizer", gRasterizerMethods,
     71                                 NELEM(gRasterizerMethods));
     72 }
     73 
     74 class SkLayerRasterizerGlue {
     75 public:
     76     static jlong create(JNIEnv* env, jobject) {
     77         return reinterpret_cast<jlong>(new NativeLayerRasterizer);
     78     }
     79 
     80     static void addLayer(JNIEnv* env, jobject, jlong layerHandle, jlong paintHandle, jfloat dx, jfloat dy) {
     81         NativeLayerRasterizer* nr = reinterpret_cast<NativeLayerRasterizer *>(layerHandle);
     82         const Paint* paint = reinterpret_cast<Paint *>(paintHandle);
     83         SkASSERT(nr);
     84         SkASSERT(paint);
     85         nr->fBuilder.addLayer(*paint, dx, dy);
     86     }
     87 };
     88 
     89 static const JNINativeMethod gLayerRasterizerMethods[] = {
     90     { "nativeConstructor",  "()J",      (void*)SkLayerRasterizerGlue::create    },
     91     { "nativeAddLayer",     "(JJFF)V",  (void*)SkLayerRasterizerGlue::addLayer  }
     92 };
     93 
     94 int register_android_graphics_LayerRasterizer(JNIEnv* env)
     95 {
     96     return RegisterMethodsOrDie(env, "android/graphics/LayerRasterizer",
     97                                 gLayerRasterizerMethods, NELEM(gLayerRasterizerMethods));
     98 }
     99 
    100 }
    101 
    102