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 }
filter(SkPaint * paint)32 void filter(SkPaint* paint) override {
33 uint32_t flags = Paint::GetSkPaintJavaFlags(*paint);
34 Paint::SetSkPaintJavaFlags(paint, (flags & ~fClearFlags) | fSetFlags);
35 }
filterFullPaint(Paint * paint)36 void filterFullPaint(Paint* paint) override {
37 paint->setJavaFlags((paint->getJavaFlags() & ~fClearFlags) | fSetFlags);
38 }
39
40 private:
41 uint16_t fClearFlags;
42 uint16_t fSetFlags;
43 };
44
45 class PaintFilterGlue {
46 public:
47
finalizer(JNIEnv * env,jobject clazz,jlong objHandle)48 static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) {
49 PaintFilter* obj = reinterpret_cast<PaintFilter*>(objHandle);
50 SkSafeUnref(obj);
51 }
52
CreatePaintFlagsFilter(JNIEnv * env,jobject clazz,jint clearFlags,jint setFlags)53 static jlong CreatePaintFlagsFilter(JNIEnv* env, jobject clazz,
54 jint clearFlags, jint setFlags) {
55 PaintFilter* filter = nullptr;
56 if (clearFlags | setFlags) {
57 filter = new PaintFlagsFilter(clearFlags, setFlags);
58 }
59 return reinterpret_cast<jlong>(filter);
60 }
61 };
62
63 static const JNINativeMethod drawfilter_methods[] = {
64 {"nativeDestructor", "(J)V", (void*) PaintFilterGlue::finalizer}
65 };
66
67 static const JNINativeMethod paintflags_methods[] = {
68 {"nativeConstructor","(II)J", (void*) PaintFilterGlue::CreatePaintFlagsFilter}
69 };
70
register_android_graphics_DrawFilter(JNIEnv * env)71 int register_android_graphics_DrawFilter(JNIEnv* env) {
72 int result = RegisterMethodsOrDie(env, "android/graphics/DrawFilter", drawfilter_methods,
73 NELEM(drawfilter_methods));
74 result |= RegisterMethodsOrDie(env, "android/graphics/PaintFlagsDrawFilter", paintflags_methods,
75 NELEM(paintflags_methods));
76
77 return 0;
78 }
79
80 }
81