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// Copyright 2012 The Chromium Authors
// 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"
#import <AppKit/AppKit.h>
#import <UniformTypeIdentifiers/UniformTypeIdentifiers.h>
#include "base/apple/foundation_util.h"
#include "base/apple/scoped_cftyperef.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/strings/sys_string_conversions.h"
#include "base/task/thread_pool.h"
#include "base/threading/thread.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/image/image_skia_util_mac.h"
// static
IconLoader::IconGroup IconLoader::GroupForFilepath(
const base::FilePath& file_path) {
// The best option is to get the type directly from the file. The next best
// option is to pull the extension from the file and get the type from that.
// The last and worst option is to fall back to `public.content` which will
// give a generic file icon.
UTType* type;
NSURL* file_url = base::apple::FilePathToNSURL(file_path);
if (file_url && [file_url getResourceValue:&type
forKey:NSURLContentTypeKey
error:nil]) {
return base::SysNSStringToUTF8(type.identifier);
}
std::string extension_string = file_path.FinalExtension();
if (!extension_string.empty()) {
// Remove the leading dot.
extension_string.erase(extension_string.begin());
type = [UTType
typeWithFilenameExtension:base::SysUTF8ToNSString(extension_string)];
if (type) {
return base::SysNSStringToUTF8(type.identifier);
}
}
return base::SysNSStringToUTF8(UTTypeContent.identifier);
}
// static
scoped_refptr<base::TaskRunner> IconLoader::GetReadIconTaskRunner() {
// NSWorkspace is thread-safe.
return base::ThreadPool::CreateTaskRunner(traits());
}
void IconLoader::ReadIcon() {
UTType* type = [UTType typeWithIdentifier:base::SysUTF8ToNSString(group_)];
NSImage* icon = [NSWorkspace.sharedWorkspace iconForContentType:type];
gfx::Image image;
if (icon_size_ == ALL) {
// The NSImage already has all sizes.
image = gfx::Image(icon);
} else {
NSSize size = NSZeroSize;
switch (icon_size_) {
case IconLoader::SMALL:
size = NSMakeSize(16, 16);
break;
case IconLoader::NORMAL:
size = NSMakeSize(32, 32);
break;
default:
NOTREACHED();
}
gfx::ImageSkia image_skia = gfx::ImageSkiaFromResizedNSImage(icon, size);
if (!image_skia.isNull()) {
image_skia.MakeThreadSafe();
image = gfx::Image(image_skia);
}
}
target_task_runner_->PostTask(
FROM_HERE,
base::BindOnce(std::move(callback_), std::move(image), group_));
delete this;
}
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