ui/gfx/image/image_skia_util_ios.mm

   1 // Copyright 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 #include "ui/gfx/image/image_skia_util_ios.h"
   6
   7 #include <UIKit/UIKit.h>
   8
   9 #include "base/logging.h"
  10 #include "base/mac/scoped_cftyperef.h"
  11 #include "skia/ext/skia_utils_ios.h"
  12 #include "third_party/skia/include/core/SkBitmap.h"
  13 #include "ui/gfx/image/image_skia.h"
  14
  15 namespace gfx {
  16
  17 gfx::ImageSkia ImageSkiaFromUIImage(UIImage* image) {
  18   gfx::ImageSkia image_skia;
  19   gfx::ImageSkiaRep image_skia_rep = ImageSkiaRepOfScaleFactorFromUIImage(
  20       image, ui::GetMaxScaleFactor());
  21   if (!image_skia_rep.is_null())
  22     image_skia.AddRepresentation(image_skia_rep);
  23   return image_skia;
  24 }
  25
  26 gfx::ImageSkiaRep ImageSkiaRepOfScaleFactorFromUIImage(
  27     UIImage* image,
  28     ui::ScaleFactor scale_factor) {
  29   if (!image)
  30     return gfx::ImageSkiaRep();
  31
  32   float scale = ui::GetScaleFactorScale(scale_factor);
  33   CGSize size = image.size;
  34   CGSize desired_size_for_scale =
  35       CGSizeMake(size.width * scale, size.height * scale);
  36   SkBitmap bitmap(gfx::CGImageToSkBitmap(image.CGImage,
  37                                          desired_size_for_scale,
  38                                          false));
  39   return gfx::ImageSkiaRep(bitmap, scale_factor);
  40 }
  41
  42 UIImage* UIImageFromImageSkia(const gfx::ImageSkia& image_skia) {
  43   return UIImageFromImageSkiaRep(image_skia.GetRepresentation(
  44       ui::GetMaxScaleFactor()));
  45 }
  46
  47 UIImage* UIImageFromImageSkiaRep(const gfx::ImageSkiaRep& image_skia_rep) {
  48   if (image_skia_rep.is_null())
  49     return nil;
  50
  51   float scale = ui::GetScaleFactorScale(image_skia_rep.scale_factor());
  52   base::mac::ScopedCFTypeRef<CGColorSpaceRef> color_space(
  53       CGColorSpaceCreateDeviceRGB());
  54   return gfx::SkBitmapToUIImageWithColorSpace(image_skia_rep.sk_bitmap(), scale,
  55                                               color_space);
  56 }
  57
  58 }  // namespace gfx