| /* libs/android_runtime/android/graphics/ColorFilter.cpp |
| ** |
| ** Copyright 2006, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| // This file was generated from the C++ include file: SkColorFilter.h |
| // Any changes made to this file will be discarded by the build. |
| // To change this file, either edit the include, or device/tools/gluemaker/main.cpp, |
| // or one of the auxilary file specifications in device/tools/gluemaker. |
| |
| #include "jni.h" |
| #include "GraphicsJNI.h" |
| #include <android_runtime/AndroidRuntime.h> |
| |
| #include "SkDrawFilter.h" |
| #include "SkPaintFlagsDrawFilter.h" |
| #include "SkPaint.h" |
| |
| namespace android { |
| |
| // Custom version of SkPaintFlagsDrawFilter that also calls setFilterLevel. |
| class CompatFlagsDrawFilter : public SkPaintFlagsDrawFilter { |
| public: |
| CompatFlagsDrawFilter(uint32_t clearFlags, uint32_t setFlags, |
| SkPaint::FilterLevel desiredLevel) |
| : SkPaintFlagsDrawFilter(clearFlags, setFlags) |
| , fDesiredLevel(desiredLevel) { |
| } |
| |
| virtual bool filter(SkPaint* paint, Type type) { |
| SkPaintFlagsDrawFilter::filter(paint, type); |
| paint->setFilterLevel(fDesiredLevel); |
| return true; |
| } |
| |
| private: |
| const SkPaint::FilterLevel fDesiredLevel; |
| }; |
| |
| // Returns whether flags contains FILTER_BITMAP_FLAG. If flags does, remove it. |
| static inline bool hadFiltering(jint& flags) { |
| // Equivalent to the Java Paint's FILTER_BITMAP_FLAG. |
| static const uint32_t sFilterBitmapFlag = 0x02; |
| |
| const bool result = (flags & sFilterBitmapFlag) != 0; |
| flags &= ~sFilterBitmapFlag; |
| return result; |
| } |
| |
| class SkDrawFilterGlue { |
| public: |
| |
| static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) { |
| SkDrawFilter* obj = reinterpret_cast<SkDrawFilter*>(objHandle); |
| SkSafeUnref(obj); |
| } |
| |
| static jlong CreatePaintFlagsDF(JNIEnv* env, jobject clazz, |
| jint clearFlags, jint setFlags) { |
| if (clearFlags | setFlags) { |
| // Mask both groups of flags to remove FILTER_BITMAP_FLAG, which no |
| // longer has a Skia equivalent flag (instead it corresponds to |
| // calling setFilterLevel), and keep track of which group(s), if |
| // any, had the flag set. |
| const bool turnFilteringOn = hadFiltering(setFlags); |
| const bool turnFilteringOff = hadFiltering(clearFlags); |
| |
| SkDrawFilter* filter; |
| if (turnFilteringOn) { |
| // Turning filtering on overrides turning it off. |
| filter = new CompatFlagsDrawFilter(clearFlags, setFlags, |
| SkPaint::kLow_FilterLevel); |
| } else if (turnFilteringOff) { |
| filter = new CompatFlagsDrawFilter(clearFlags, setFlags, |
| SkPaint::kNone_FilterLevel); |
| } else { |
| filter = new SkPaintFlagsDrawFilter(clearFlags, setFlags); |
| } |
| return reinterpret_cast<jlong>(filter); |
| } else { |
| return NULL; |
| } |
| } |
| }; |
| |
| static JNINativeMethod drawfilter_methods[] = { |
| {"nativeDestructor", "(J)V", (void*) SkDrawFilterGlue::finalizer} |
| }; |
| |
| static JNINativeMethod paintflags_methods[] = { |
| {"nativeConstructor","(II)J", (void*) SkDrawFilterGlue::CreatePaintFlagsDF} |
| }; |
| |
| #define REG(env, name, array) \ |
| result = android::AndroidRuntime::registerNativeMethods(env, name, array, SK_ARRAY_COUNT(array)); \ |
| if (result < 0) return result |
| |
| |
| int register_android_graphics_DrawFilter(JNIEnv* env) { |
| int result; |
| |
| REG(env, "android/graphics/DrawFilter", drawfilter_methods); |
| REG(env, "android/graphics/PaintFlagsDrawFilter", paintflags_methods); |
| |
| return 0; |
| } |
| |
| } |