components/enhanced_bookmarks/image_store_util.cc

   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 #include "third_party/skia/include/core/SkBitmap.h"
   8 #include "ui/gfx/color_analysis.h"
   9 #include "ui/gfx/image/image_skia.h"
  10 #include "ui/gfx/image/image_util.h"
  11
  12 namespace {
  13 const int kJpegEncodingQuality = 70;
  14 }  // namespace
  15
  16 namespace enhanced_bookmarks {
  17
  18 scoped_refptr<base::RefCountedMemory> BytesForImage(const gfx::Image& image) {
  19   DCHECK(image.AsImageSkia().image_reps().size() == 1);
  20   DCHECK(image.AsImageSkia().image_reps().begin()->scale() == 1.0f);
  21
  22   std::vector<unsigned char> data;
  23   bool succeeded =
  24       gfx::JPEG1xEncodedDataFromImage(image, kJpegEncodingQuality, &data);
  25
  26   if (!succeeded)
  27     return scoped_refptr<base::RefCountedMemory>();
  28
  29   return scoped_refptr<base::RefCountedMemory>(new base::RefCountedBytes(data));
  30 }
  31
  32 gfx::Image ImageForBytes(const scoped_refptr<base::RefCountedMemory>& bytes) {
  33   return gfx::ImageFrom1xJPEGEncodedData(bytes->front(), bytes->size());
  34 }
  35
  36 SkColor DominantColorForImage(const gfx::Image& image) {
  37   return color_utils::CalculateKMeanColorOfBitmap(*image.ToSkBitmap());
  38 }
  39 }