1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_GFX_ANDROID_JAVA_BITMAP_H_ 6 #define UI_GFX_ANDROID_JAVA_BITMAP_H_ 7 8 #include <jni.h> 9 10 #include "base/android/scoped_java_ref.h" 11 #include "ui/gfx/size.h" 12 13 class SkBitmap; 14 15 namespace gfx { 16 17 // This class wraps a JNI AndroidBitmap object to make it easier to use. It 18 // handles locking and unlocking of the underlying pixels, along with wrapping 19 // various JNI methods. 20 class GFX_EXPORT JavaBitmap { 21 public: 22 explicit JavaBitmap(jobject bitmap); 23 ~JavaBitmap(); 24 pixels()25 inline void* pixels() { return pixels_; } size()26 inline const gfx::Size& size() const { return size_; } 27 // Formats are in android/bitmap.h; e.g. ANDROID_BITMAP_FORMAT_RGBA_8888 format()28 inline int format() const { return format_; } stride()29 inline uint32_t stride() const { return stride_; } 30 31 // Registers methods with JNI and returns true if succeeded. 32 static bool RegisterJavaBitmap(JNIEnv* env); 33 34 private: 35 jobject bitmap_; 36 void* pixels_; 37 gfx::Size size_; 38 int format_; 39 uint32_t stride_; 40 41 DISALLOW_COPY_AND_ASSIGN(JavaBitmap); 42 }; 43 44 GFX_EXPORT base::android::ScopedJavaLocalRef<jobject> ConvertToJavaBitmap( 45 const SkBitmap* skbitmap); 46 47 GFX_EXPORT SkBitmap CreateSkBitmapFromJavaBitmap(JavaBitmap& jbitmap); 48 49 // If the resource loads successfully, it will be resized to |size|. 50 // Note: If the source resource is smaller than |size|, quality may suffer. 51 GFX_EXPORT SkBitmap CreateSkBitmapFromResource(const char* name, 52 gfx::Size size); 53 54 } // namespace gfx 55 56 #endif // UI_GFX_ANDROID_JAVA_BITMAP_H_ 57