| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_GFX_ANDROID_JAVA_BITMAP_H_ |
| #define UI_GFX_ANDROID_JAVA_BITMAP_H_ |
| |
| #include <jni.h> |
| |
| #include "base/android/scoped_java_ref.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "ui/gfx/size.h" |
| |
| namespace gfx { |
| |
| // A Java counterpart will be generated for this enum. |
| // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.ui.gfx |
| enum BitmapFormat { |
| BITMAP_FORMAT_NO_CONFIG, |
| BITMAP_FORMAT_ALPHA_8, |
| BITMAP_FORMAT_ARGB_4444, |
| BITMAP_FORMAT_ARGB_8888, |
| BITMAP_FORMAT_RGB_565, |
| }; |
| |
| // This class wraps a JNI AndroidBitmap object to make it easier to use. It |
| // handles locking and unlocking of the underlying pixels, along with wrapping |
| // various JNI methods. |
| class GFX_EXPORT JavaBitmap { |
| public: |
| explicit JavaBitmap(jobject bitmap); |
| ~JavaBitmap(); |
| |
| inline void* pixels() { return pixels_; } |
| inline const void* pixels() const { return pixels_; } |
| inline const gfx::Size& size() const { return size_; } |
| // Formats are in android/bitmap.h; e.g. ANDROID_BITMAP_FORMAT_RGBA_8888 |
| inline int format() const { return format_; } |
| inline uint32_t stride() const { return stride_; } |
| |
| // Registers methods with JNI and returns true if succeeded. |
| static bool RegisterJavaBitmap(JNIEnv* env); |
| |
| private: |
| jobject bitmap_; |
| void* pixels_; |
| gfx::Size size_; |
| int format_; |
| uint32_t stride_; |
| |
| DISALLOW_COPY_AND_ASSIGN(JavaBitmap); |
| }; |
| |
| // Allocates a Java-backed bitmap (android.graphics.Bitmap) with the given |
| // (non-empty!) size and color type. |
| GFX_EXPORT base::android::ScopedJavaLocalRef<jobject> CreateJavaBitmap( |
| int width, |
| int height, |
| SkColorType color_type); |
| |
| // Loads an SkBitmap from the provided drawable resource identifier (e.g., |
| // android:drawable/overscroll_glow). If the resource loads successfully, it |
| // will be integrally scaled down, preserving aspect ratio, to a size no smaller |
| // than |size|. Otherwise, an empty bitmap is returned. |
| GFX_EXPORT SkBitmap |
| CreateSkBitmapFromAndroidResource(const char* name, gfx::Size size); |
| |
| // Converts |skbitmap| to a Java-backed bitmap (android.graphics.Bitmap). |
| // Note: |skbitmap| is assumed to be non-null, non-empty and one of RGBA_8888 or |
| // RGB_565 formats. |
| GFX_EXPORT base::android::ScopedJavaLocalRef<jobject> ConvertToJavaBitmap( |
| const SkBitmap* skbitmap); |
| |
| // Converts |bitmap| to an SkBitmap of the same size and format. |
| // Note: |jbitmap| is assumed to be non-null, non-empty and of format RGBA_8888. |
| GFX_EXPORT SkBitmap CreateSkBitmapFromJavaBitmap(const JavaBitmap& jbitmap); |
| |
| // Returns a Skia color type value for the requested input java Bitmap.Config. |
| GFX_EXPORT SkColorType ConvertToSkiaColorType(jobject jbitmap_config); |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_ANDROID_JAVA_BITMAP_H_ |