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 "GraphicsJNI.h"
19
20 #include "hwui/Paint.h"
21 #include "hwui/PaintFilter.h"
22 #include "SkPaint.h"
23
24 namespace android {
25
26 class PaintFlagsFilter : public PaintFilter {
27 public:
PaintFlagsFilter(uint32_t clearFlags,uint32_t setFlags)28 PaintFlagsFilter(uint32_t clearFlags, uint32_t setFlags) {
29 fClearFlags = static_cast<uint16_t>(clearFlags);
30 fSetFlags = static_cast<uint16_t>(setFlags);
31 }
filterFullPaint(Paint * paint)32 void filterFullPaint(Paint* paint) override {
33 paint->setJavaFlags((paint->getJavaFlags() & ~fClearFlags) | fSetFlags);
34 }
35
36 private:
37 uint16_t fClearFlags;
38 uint16_t fSetFlags;
39 };
40
41 class PaintFilterGlue {
42 public:
43
finalizer(JNIEnv * env,jobject clazz,jlong objHandle)44 static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
45 PaintFilter* obj = reinterpret_cast<PaintFilter*>(objHandle);
46 SkSafeUnref(obj);
47 }
48
CreatePaintFlagsFilter(JNIEnv * env,jobject clazz,jint clearFlags,jint setFlags)49 static jlong CreatePaintFlagsFilter(JNIEnv* env, jobject clazz,
50 jint clearFlags, jint setFlags) {
51 PaintFilter* filter = nullptr;
52 if (clearFlags | setFlags) {
53 filter = new PaintFlagsFilter(clearFlags, setFlags);
54 }
55 return reinterpret_cast<jlong>(filter);
56 }
57 };
58
59 static const JNINativeMethod drawfilter_methods[] = {
60 {"nativeDestructor", "(J)V", (void*) PaintFilterGlue::finalizer}
61 };
62
63 static const JNINativeMethod paintflags_methods[] = {
64 {"nativeConstructor","(II)J", (void*) PaintFilterGlue::CreatePaintFlagsFilter}
65 };
66
register_android_graphics_DrawFilter(JNIEnv * env)67 int register_android_graphics_DrawFilter(JNIEnv* env) {
68 int result = RegisterMethodsOrDie(env, "android/graphics/DrawFilter", drawfilter_methods,
69 NELEM(drawfilter_methods));
70 result |= RegisterMethodsOrDie(env, "android/graphics/PaintFlagsDrawFilter", paintflags_methods,
71 NELEM(paintflags_methods));
72
73 return result;
74 }
75
76 }
77