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// 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 {
// Define Bitmap Config values like BITMAP_CONFIG_ARGB_8888 in a
// way that ensures they're always the same than their Java counterpart.
enum BitmapConfig {
#define DEFINE_BITMAP_CONFIG(x, y) BITMAP_##x = y,
#include "bitmap_config_list.h"
#undef DEFINE_BITMAP_CONFIG
};
// 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 configuration.
GFX_EXPORT base::android::ScopedJavaLocalRef<jobject> CreateJavaBitmap(
int width,
int height,
SkBitmap::Config bitmap_config);
// Loads a Java-backed bitmap (android.graphics.Bitmap) 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, null is returned.
GFX_EXPORT base::android::ScopedJavaLocalRef<jobject>
CreateJavaBitmapFromAndroidResource(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 config value for the requested input java Bitmap.Config.
GFX_EXPORT SkBitmap::Config ConvertToSkiaConfig(jobject bitmap_config);
} // namespace gfx
#endif // UI_GFX_ANDROID_JAVA_BITMAP_H_
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