1 // Copyright 2014 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 #include "components/enhanced_bookmarks/image_store_util.h" 6 7 #import <UIKit/UIKit.h> 8 9 #include "base/mac/scoped_cftyperef.h" 10 #include "base/mac/scoped_nsobject.h" 11 12 namespace { 13 // An implementation of RefCountedMemory, where the bytes are stored in a 14 // NSData. This class assumes the NSData is non mutable to avoid a copy. 15 class RefCountedNSDataMemory : public base::RefCountedMemory { 16 public: 17 explicit RefCountedNSDataMemory(NSData* memory) : data_([memory retain]) {} 18 19 virtual const unsigned char* front() const OVERRIDE { 20 return reinterpret_cast<const unsigned char*>([data_ bytes]); 21 } 22 23 virtual size_t size() const OVERRIDE { 24 return [data_ length]; 25 } 26 27 private: 28 virtual ~RefCountedNSDataMemory() {} 29 30 base::scoped_nsobject<NSData> data_; 31 DISALLOW_COPY_AND_ASSIGN(RefCountedNSDataMemory); 32 }; 33 } // namespace 34 35 namespace enhanced_bookmarks { 36 37 // Encodes the UIImage representation of a gfx::Image. 38 scoped_refptr<base::RefCountedMemory> BytesForImage(const gfx::Image& image) { 39 DCHECK(image.HasRepresentation(gfx::Image::kImageRepCocoaTouch)); 40 return scoped_refptr<RefCountedNSDataMemory>(new RefCountedNSDataMemory( 41 [NSKeyedArchiver archivedDataWithRootObject:image.ToUIImage()])); 42 } 43 44 // Decodes the UIImage in the bytes and returns a gfx::Image. 45 gfx::Image ImageForBytes(const scoped_refptr<base::RefCountedMemory>& data) { 46 return gfx::Image([[NSKeyedUnarchiver unarchiveObjectWithData: 47 [NSData dataWithBytes:data->front() length:data->size()]] retain]); 48 } 49 50 } // namespace enhanced_bookmarks 51
