Rasterizer.cpp revision 6ba30b85ddfbe37c338ee8dde3dd33322eb38d47 
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 "Paint.h"
26#include "SkLayerRasterizer.h"
27#include <android_runtime/AndroidRuntime.h>
28
29// Rasterizer.java holds a pointer (jlong) to this guy
30class NativeRasterizer {
31public:
32    NativeRasterizer() {}
33    virtual ~NativeRasterizer() {}
34
35    // Can return NULL, or a ref to the skia rasterizer.
36    virtual SkRasterizer* refRasterizer() { return NULL; }
37};
38
39class NativeLayerRasterizer : public NativeRasterizer {
40public:
41    SkLayerRasterizer::Builder fBuilder;
42
43    virtual SkRasterizer* refRasterizer() {
44        return fBuilder.snapshotRasterizer();
45    }
46};
47
48SkRasterizer* GraphicsJNI::refNativeRasterizer(jlong rasterizerHandle) {
49    NativeRasterizer* nr = reinterpret_cast<NativeRasterizer*>(rasterizerHandle);
50    return nr ? nr->refRasterizer() : NULL;
51}
52
53///////////////////////////////////////////////////////////////////////////////
54
55namespace android {
56
57class SkRasterizerGlue {
58public:
59    static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
60        delete reinterpret_cast<NativeRasterizer *>(objHandle);
61    }
62
63};
64
65static JNINativeMethod gRasterizerMethods[] = {
66    {"finalizer", "(J)V", (void*) SkRasterizerGlue::finalizer}
67};
68
69int register_android_graphics_Rasterizer(JNIEnv* env) {
70    int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Rasterizer", gRasterizerMethods,
71        sizeof(gRasterizerMethods) / sizeof(gRasterizerMethods[0]));
72    return result;
73}
74
75class SkLayerRasterizerGlue {
76public:
77    static jlong create(JNIEnv* env, jobject) {
78        return reinterpret_cast<jlong>(new NativeLayerRasterizer);
79    }
80
81    static void addLayer(JNIEnv* env, jobject, jlong layerHandle, jlong paintHandle, jfloat dx, jfloat dy) {
82        NativeLayerRasterizer* nr = reinterpret_cast<NativeLayerRasterizer *>(layerHandle);
83        const Paint* paint = reinterpret_cast<Paint *>(paintHandle);
84        SkASSERT(nr);
85        SkASSERT(paint);
86        nr->fBuilder.addLayer(*paint, dx, dy);
87    }
88};
89
90static JNINativeMethod gLayerRasterizerMethods[] = {
91    { "nativeConstructor",  "()J",      (void*)SkLayerRasterizerGlue::create    },
92    { "nativeAddLayer",     "(JJFF)V",  (void*)SkLayerRasterizerGlue::addLayer  }
93};
94
95int register_android_graphics_LayerRasterizer(JNIEnv* env)
96{
97    return android::AndroidRuntime::registerNativeMethods(env,
98                                                       "android/graphics/LayerRasterizer",
99                                                       gLayerRasterizerMethods,
100                                                       SK_ARRAY_COUNT(gLayerRasterizerMethods));
101}
102
103}
104
105