chrome/browser/icon_loader_linux.cc

   1 // Copyright (c) 2011 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 "chrome/browser/icon_loader.h"
   6
   7 #include <string>
   8
   9 #include "base/bind.h"
  10 #include "base/file_util.h"
  11 #include "base/logging.h"
  12 #include "base/message_loop.h"
  13 #include "base/nix/mime_util_xdg.h"
  14 #include "third_party/skia/include/core/SkBitmap.h"
  15 #include "webkit/glue/image_decoder.h"
  16
  17 using std::string;
  18
  19 void IconLoader::ReadIcon() {
  20   int size_pixels = 0;
  21   switch (icon_size_) {
  22     case IconLoader::SMALL:
  23       size_pixels = 16;
  24       break;
  25     case IconLoader::NORMAL:
  26       size_pixels = 32;
  27       break;
  28     case IconLoader::LARGE:
  29       size_pixels = 48;
  30       break;
  31     default:
  32       NOTREACHED();
  33   }
  34
  35   FilePath filename = base::nix::GetMimeIcon(group_, size_pixels);
  36   string icon_data;
  37   file_util::ReadFileToString(filename, &icon_data);
  38
  39   webkit_glue::ImageDecoder decoder;
  40   scoped_ptr<SkBitmap> bitmap(new SkBitmap());
  41   *bitmap = decoder.Decode(
  42       reinterpret_cast<const unsigned char*>(icon_data.data()),
  43       icon_data.length());
  44   if (!bitmap->empty()) {
  45     DCHECK_EQ(size_pixels, bitmap->width());
  46     DCHECK_EQ(size_pixels, bitmap->height());
  47     image_.reset(new gfx::Image(bitmap.release()));
  48   } else {
  49     LOG(WARNING) << "Unsupported file type or load error: " << filename.value();
  50   }
  51
  52   target_message_loop_->PostTask(
  53       FROM_HERE, base::Bind(&IconLoader::NotifyDelegate, this));
  54 }