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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CONTENT_BROWSER_ANDROID_JNI_HELPER_H_ | 5 #ifndef CONTENT_PUBLIC_BROWSER_ANDROID_BITMAP_HOLDER_H_ |
| 6 #define CONTENT_BROWSER_ANDROID_JNI_HELPER_H_ | 6 #define CONTENT_PUBLIC_BROWSER_ANDROID_BITMAP_HOLDER_H_ |
| 7 | 7 |
| 8 #include <jni.h> | 8 #include <jni.h> |
| 9 #include <string> | 9 #include <string> |
| 10 #include <vector> | 10 #include <vector> |
| 11 | 11 |
| 12 #include "base/android/scoped_java_ref.h" | 12 #include "base/android/scoped_java_ref.h" |
| 13 #include "base/string16.h" | 13 #include "base/string16.h" |
| 14 #include "ui/gfx/rect.h" | 14 #include "ui/gfx/rect.h" |
| 15 | 15 |
| 16 class SkBitmap; | 16 class SkBitmap; |
| 17 namespace gfx { | 17 namespace gfx { |
| 18 class Size; | 18 class Size; |
| 19 } | 19 } |
| 20 | 20 |
| 21 namespace content { | |
| 22 | |
| 23 // TODO: Remove this and use ScopedJavaLocalRef instead. | |
|
Yaron
2012/06/15 17:40:35
add your name
no sievers
2012/06/15 20:34:41
Done.
| |
| 21 // Auto creator/destructor for a JNI frame for local references. This allows | 24 // Auto creator/destructor for a JNI frame for local references. This allows |
| 22 // safely having more than 16 local references, and avoids calls to | 25 // safely having more than 16 local references, and avoids calls to |
| 23 // DeleteLocalRef. | 26 // DeleteLocalRef. |
| 24 // This should be created on the stack. | 27 // This should be created on the stack. |
| 25 class AutoLocalFrame { | 28 class AutoLocalFrame { |
| 26 public: | 29 public: |
| 27 AutoLocalFrame(int capacity); | 30 AutoLocalFrame(int capacity); |
| 28 ~AutoLocalFrame(); | 31 ~AutoLocalFrame(); |
| 29 | 32 |
| 30 private: | 33 private: |
| (...skipping 15 matching lines...) Expand all Loading... | |
| 46 int format() const; | 49 int format() const; |
| 47 uint32_t stride() const; | 50 uint32_t stride() const; |
| 48 | 51 |
| 49 private: | 52 private: |
| 50 jobject bitmap_; | 53 jobject bitmap_; |
| 51 void* pixels_; | 54 void* pixels_; |
| 52 | 55 |
| 53 DISALLOW_COPY_AND_ASSIGN(AutoLockJavaBitmap); | 56 DISALLOW_COPY_AND_ASSIGN(AutoLockJavaBitmap); |
| 54 }; | 57 }; |
| 55 | 58 |
| 56 // Tell Java to write its current stack trace into Android logs. Note that the | |
| 57 // trace will stop at the entry point into C++ code. | |
| 58 void PrintJavaStackTrace(); | |
| 59 | |
| 60 // Fills in the given vector<string> from a java String[]. | |
| 61 void ConvertJavaArrayOfStringsToVectorOfStrings( | |
| 62 JNIEnv* env, | |
| 63 jobjectArray jstrings, | |
| 64 std::vector<std::string>* vec); | |
| 65 | |
| 66 // Helper method to create an Android Java Bitmap object. You can use the | 59 // Helper method to create an Android Java Bitmap object. You can use the |
| 67 // AutoLockJavaBitmap class to manipulate its pixels, and pass it back up | 60 // AutoLockJavaBitmap class to manipulate its pixels, and pass it back up |
| 68 // to Java code for drawing. Returns a JNI local reference to the bitmap. | 61 // to Java code for drawing. Returns a JNI local reference to the bitmap. |
| 69 // If 'keep' is true, then a reference will be kept in a static Java data | 62 // If 'keep' is true, then a reference will be kept in a static Java data |
| 70 // structure to prevent GC. In that case, you must call DeleteJavaBitmap() to | 63 // structure to prevent GC. In that case, you must call DeleteJavaBitmap() to |
| 71 // garbage collect it. | 64 // garbage collect it. |
| 72 base::android::ScopedJavaLocalRef<jobject> CreateJavaBitmap( | 65 base::android::ScopedJavaLocalRef<jobject> CreateJavaBitmap( |
| 73 const gfx::Size& size, bool keep); | 66 const gfx::Size& size, bool keep); |
| 74 void DeleteJavaBitmap(jobject bitmap); | 67 void DeleteJavaBitmap(jobject bitmap); |
| 75 | 68 |
| 76 // Paint one java bitmap into another. Scale if needed. | 69 // Paint one java bitmap into another. Scale if needed. |
| 77 void PaintJavaBitmapToJavaBitmap(jobject sourceBitmap, | 70 void PaintJavaBitmapToJavaBitmap(jobject sourceBitmap, |
| 78 const gfx::Rect& sourceRect, | 71 const gfx::Rect& sourceRect, |
| 79 jobject destBitmap, | 72 jobject destBitmap, |
| 80 const gfx::Rect& destRect); | 73 const gfx::Rect& destRect); |
| 81 | 74 |
| 82 // Copy the Chromium Skia bitmap into a new Java bitmap. Useful for small UI | 75 // Copy the Chromium Skia bitmap into a new Java bitmap. Useful for small UI |
| 83 // bitmaps originating from WebKit that we want to manipulate in Java (such as | 76 // bitmaps originating from WebKit that we want to manipulate in Java (such as |
| 84 // favicons). Due to the extra copy, should be avoided for large or frequently | 77 // favicons). Due to the extra copy, should be avoided for large or frequently |
| 85 // used bitmaps. Returns a local reference to the new bitmap. | 78 // used bitmaps. Returns a local reference to the new bitmap. |
| 86 base::android::ScopedJavaLocalRef<jobject> ConvertToJavaBitmap( | 79 base::android::ScopedJavaLocalRef<jobject> ConvertToJavaBitmap( |
| 87 const SkBitmap* skbitmap); | 80 const SkBitmap* skbitmap); |
| 88 | 81 |
| 89 // Registers our JNI methods. | 82 } // namespace content |
| 90 bool RegisterJniHelper(JNIEnv* env); | |
| 91 | 83 |
| 92 #endif // CONTENT_BROWSER_ANDROID_JNI_HELPER_H_ | 84 #endif // CONTENT_PUBLIC_BROWSER_ANDROID_BITMAP_HOLDER_H_ |
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