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// Copyright (c) 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 "chrome/browser/icon_loader.h"
#include <string>
#include "base/bind.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/nix/mime_util_xdg.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/size.h"
using std::string;
// static
IconGroupID IconLoader::ReadGroupIDFromFilepath(
const base::FilePath& filepath) {
return base::nix::GetFileMimeType(filepath);
}
bool IconLoader::IsIconMutableFromFilepath(const base::FilePath&) {
return false;
}
void IconLoader::ReadIcon() {
int size_pixels = 0;
switch (icon_size_) {
case IconLoader::SMALL:
size_pixels = 16;
break;
case IconLoader::NORMAL:
size_pixels = 32;
break;
case IconLoader::LARGE:
size_pixels = 48;
break;
default:
NOTREACHED();
}
base::FilePath filename = base::nix::GetMimeIcon(group_, size_pixels);
// We don't support SVG or XPM icons; this just spams the terminal so fail
// quickly and don't try to read the file from disk first.
if (filename.Extension() != ".svg" &&
filename.Extension() != ".xpm") {
string icon_data;
base::ReadFileToString(filename, &icon_data);
SkBitmap bitmap;
bool success = gfx::PNGCodec::Decode(
reinterpret_cast<const unsigned char*>(icon_data.data()),
icon_data.length(),
&bitmap);
if (success && !bitmap.empty()) {
DCHECK_EQ(size_pixels, bitmap.width());
DCHECK_EQ(size_pixels, bitmap.height());
gfx::ImageSkia image_skia = gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
image_skia.MakeThreadSafe();
image_.reset(new gfx::Image(image_skia));
} else {
LOG(WARNING) << "Unsupported file type or load error: "
<< filename.value();
}
}
target_message_loop_->PostTask(
FROM_HERE, base::Bind(&IconLoader::NotifyDelegate, this));
}
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