1 /* libs/android_runtime/android/graphics/ColorFilter.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 #include "jni.h"
19 #include "GraphicsJNI.h"
20 #include "core_jni_helpers.h"
21
22 #include "SkColorFilter.h"
23 #include "SkColorMatrixFilter.h"
24 #include "SkXfermode.h"
25
26 #include <Caches.h>
27
28 namespace android {
29
30 using namespace uirenderer;
31
32 class SkColorFilterGlue {
33 public:
finalizer(JNIEnv * env,jobject clazz,jlong skFilterHandle)34 static void finalizer(JNIEnv* env, jobject clazz, jlong skFilterHandle) {
35 SkColorFilter* filter = reinterpret_cast<SkColorFilter *>(skFilterHandle);
36 if (filter) SkSafeUnref(filter);
37 }
38
CreatePorterDuffFilter(JNIEnv * env,jobject,jint srcColor,jint modeHandle)39 static jlong CreatePorterDuffFilter(JNIEnv* env, jobject, jint srcColor, jint modeHandle) {
40 SkXfermode::Mode mode = static_cast<SkXfermode::Mode>(modeHandle);
41 return reinterpret_cast<jlong>(SkColorFilter::CreateModeFilter(srcColor, mode));
42 }
43
CreateLightingFilter(JNIEnv * env,jobject,jint mul,jint add)44 static jlong CreateLightingFilter(JNIEnv* env, jobject, jint mul, jint add) {
45 return reinterpret_cast<jlong>(SkColorMatrixFilter::CreateLightingFilter(mul, add));
46 }
47
CreateColorMatrixFilter(JNIEnv * env,jobject,jfloatArray jarray)48 static jlong CreateColorMatrixFilter(JNIEnv* env, jobject, jfloatArray jarray) {
49 AutoJavaFloatArray autoArray(env, jarray, 20);
50 const float* src = autoArray.ptr();
51
52 #ifdef SK_SCALAR_IS_FLOAT
53 return reinterpret_cast<jlong>(SkColorMatrixFilter::Create(src));
54 #else
55 SkASSERT(false);
56 #endif
57 }
58 };
59
60 static const JNINativeMethod colorfilter_methods[] = {
61 {"destroyFilter", "(J)V", (void*) SkColorFilterGlue::finalizer}
62 };
63
64 static const JNINativeMethod porterduff_methods[] = {
65 { "native_CreatePorterDuffFilter", "(II)J", (void*) SkColorFilterGlue::CreatePorterDuffFilter },
66 };
67
68 static const JNINativeMethod lighting_methods[] = {
69 { "native_CreateLightingFilter", "(II)J", (void*) SkColorFilterGlue::CreateLightingFilter },
70 };
71
72 static const JNINativeMethod colormatrix_methods[] = {
73 { "nativeColorMatrixFilter", "([F)J", (void*) SkColorFilterGlue::CreateColorMatrixFilter },
74 };
75
register_android_graphics_ColorFilter(JNIEnv * env)76 int register_android_graphics_ColorFilter(JNIEnv* env) {
77 android::RegisterMethodsOrDie(env, "android/graphics/ColorFilter", colorfilter_methods,
78 NELEM(colorfilter_methods));
79 android::RegisterMethodsOrDie(env, "android/graphics/PorterDuffColorFilter", porterduff_methods,
80 NELEM(porterduff_methods));
81 android::RegisterMethodsOrDie(env, "android/graphics/LightingColorFilter", lighting_methods,
82 NELEM(lighting_methods));
83 android::RegisterMethodsOrDie(env, "android/graphics/ColorMatrixColorFilter",
84 colormatrix_methods, NELEM(colormatrix_methods));
85
86 return 0;
87 }
88
89 }
90