More old files deletion.

ui/gfx/image/image_ios.mm

-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/gfx/image/image.h"
-
-#import <UIKit/UIKit.h>
-#include <cmath>
-#include <limits>
-
-#include "base/logging.h"
-#include "base/mac/scoped_cftyperef.h"
-#include "base/mac/scoped_nsobject.h"
-#include "ui/gfx/image/image_png_rep.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/image/image_skia_util_ios.h"
-#include "ui/gfx/size.h"
-
-namespace gfx {
-namespace internal {
-
-namespace {
-
-// Returns a 16x16 red UIImage to visually show when a UIImage cannot be
-// created from PNG data. Logs error as well.
-// Caller takes ownership of returned UIImage.
-UIImage* CreateErrorUIImage(float scale) {
-  LOG(ERROR) << "Unable to decode PNG into UIImage.";
-  base::ScopedCFTypeRef<CGColorSpaceRef> color_space(
-      CGColorSpaceCreateDeviceRGB());
-  base::ScopedCFTypeRef<CGContextRef> context(CGBitmapContextCreate(
-      NULL,  // Allow CG to allocate memory.
-      16,    // width
-      16,    // height
-      8,     // bitsPerComponent
-      0,     // CG will calculate by default.
-      color_space,
-      kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host));
-  CGContextSetRGBFillColor(context, 1.0, 0.0, 0.0, 1.0);
-  CGContextFillRect(context, CGRectMake(0.0, 0.0, 16, 16));
-  base::ScopedCFTypeRef<CGImageRef> cg_image(
-      CGBitmapContextCreateImage(context));
-  return [[UIImage imageWithCGImage:cg_image.get()
-                              scale:scale
-                        orientation:UIImageOrientationUp] retain];
-}
-
-// Converts from ImagePNGRep to UIImage.
-UIImage* CreateUIImageFromImagePNGRep(const gfx::ImagePNGRep& image_png_rep) {
-  float scale = image_png_rep.scale;
-  scoped_refptr<base::RefCountedMemory> png = image_png_rep.raw_data;
-  CHECK(png.get());
-  NSData* data = [NSData dataWithBytes:png->front() length:png->size()];
-  UIImage* image = [[UIImage alloc] initWithData:data scale:scale];
-  return image ? image : CreateErrorUIImage(scale);
-}
-
-}  // namespace
-
-scoped_refptr<base::RefCountedMemory> Get1xPNGBytesFromUIImage(
-    UIImage* uiimage) {
-  NSData* data = UIImagePNGRepresentation(uiimage);
-
-  if ([data length] == 0)
-    return NULL;
-
-  scoped_refptr<base::RefCountedBytes> png_bytes(
-      new base::RefCountedBytes());
-  png_bytes->data().resize([data length]);
-  [data getBytes:&png_bytes->data().at(0) length:[data length]];
-  return png_bytes;
-}
-
-UIImage* CreateUIImageFromPNG(
-    const std::vector<gfx::ImagePNGRep>& image_png_reps) {
-  float ideal_scale = ImageSkia::GetMaxSupportedScale();
-
-  if (image_png_reps.empty())
-    return CreateErrorUIImage(ideal_scale);
-
-  // Find best match for |ideal_scale|.
-  float smallest_diff = std::numeric_limits<float>::max();
-  size_t closest_index = 0u;
-  for (size_t i = 0; i < image_png_reps.size(); ++i) {
-    float scale = image_png_reps[i].scale;
-    float diff = std::abs(ideal_scale - scale);
-    if (diff < smallest_diff) {
-      smallest_diff = diff;
-      closest_index = i;
-    }
-  }
-
-  return CreateUIImageFromImagePNGRep(image_png_reps[closest_index]);
-}
-
-scoped_refptr<base::RefCountedMemory> Get1xPNGBytesFromImageSkia(
-    const ImageSkia* skia) {
-  // iOS does not expose libpng, so conversion from ImageSkia to PNG must go
-  // through UIImage.
-  // TODO(rohitrao): Rewrite the callers of this function to save the UIImage
-  // representation in the gfx::Image.  If we're generating it, we might as well
-  // hold on to it.
-  const gfx::ImageSkiaRep& image_skia_rep = skia->GetRepresentation(1.0f);
-  if (image_skia_rep.scale() != 1.0f)
-    return NULL;
-
-  UIImage* image = UIImageFromImageSkiaRep(image_skia_rep);
-  return Get1xPNGBytesFromUIImage(image);
-}
-
-ImageSkia* ImageSkiaFromPNG(
-    const std::vector<gfx::ImagePNGRep>& image_png_reps) {
-  // iOS does not expose libpng, so conversion from PNG to ImageSkia must go
-  // through UIImage.
-  gfx::ImageSkia* image_skia = new gfx::ImageSkia();
-  for (size_t i = 0; i < image_png_reps.size(); ++i) {
-    base::scoped_nsobject<UIImage> uiimage(
-        CreateUIImageFromImagePNGRep(image_png_reps[i]));
-    gfx::ImageSkiaRep image_skia_rep = ImageSkiaRepOfScaleFromUIImage(
-        uiimage, image_png_reps[i].scale);
-    if (!image_skia_rep.is_null())
-      image_skia->AddRepresentation(image_skia_rep);
-  }
-  return image_skia;
-}
-
-gfx::Size UIImageSize(UIImage* image) {
-  int width = static_cast<int>(image.size.width);
-  int height = static_cast<int>(image.size.height);
-  return gfx::Size(width, height);
-}
-
-} // namespace internal
-} // namespace gfx