chrome/browser/importer/importer.cc

// Copyright (c) 2011 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 "chrome/browser/importer/importer.h"

#include "chrome/browser/importer/importer_bridge.h"
#include "chrome/browser/importer/importer_data_types.h"
#include "skia/ext/image_operations.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/favicon_size.h"
#include "webkit/glue/image_decoder.h"

void Importer::Cancel() {
  cancelled_ = true;
}

Importer::Importer()
    : import_to_bookmark_bar_(false),
      bookmark_bar_disabled_(false),
      cancelled_(false) {
}

Importer::~Importer() {
}

// static
bool Importer::ReencodeFavicon(const unsigned char* src_data,
                               size_t src_len,
                               std::vector<unsigned char>* png_data) {
  // Decode the favicon using WebKit's image decoder.
  webkit_glue::ImageDecoder decoder(gfx::Size(kFaviconSize, kFaviconSize));
  SkBitmap decoded = decoder.Decode(src_data, src_len);
  if (decoded.empty())
    return false;  // Unable to decode.

  if (decoded.width() != kFaviconSize || decoded.height() != kFaviconSize) {
    // The bitmap is not the correct size, re-sample.
    int new_width = decoded.width();
    int new_height = decoded.height();
    calc_favicon_target_size(&new_width, &new_height);
    decoded = skia::ImageOperations::Resize(
        decoded, skia::ImageOperations::RESIZE_LANCZOS3, new_width, new_height);
  }

  // Encode our bitmap as a PNG.
  gfx::PNGCodec::EncodeBGRASkBitmap(decoded, false, png_data);
  return true;
}