arc: Create intermediate directories in c/b/c/arc

chrome/browser/chromeos/arc/arc_wallpaper_service.cc

-// Copyright 2016 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/chromeos/arc/arc_wallpaper_service.h"
-
-#include <vector>
-
-#include "ash/common/wallpaper/wallpaper_controller.h"
-#include "ash/common/wm_shell.h"
-#include "base/logging.h"
-#include "base/memory/ptr_util.h"
-#include "base/task_runner_util.h"
-#include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
-#include "components/arc/arc_bridge_service.h"
-#include "components/signin/core/account_id/account_id.h"
-#include "components/user_manager/user_manager.h"
-#include "components/wallpaper/wallpaper_files_id.h"
-#include "components/wallpaper/wallpaper_layout.h"
-#include "content/public/browser/browser_thread.h"
-#include "ui/gfx/codec/png_codec.h"
-#include "ui/gfx/image/image.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/image/image_util.h"
-
-using user_manager::UserManager;
-
-namespace arc {
-
-namespace {
-
-constexpr uint32_t kMinOnWallpaperChangedVersion = 1;
-constexpr char kAndroidWallpaperFilename[] = "android.jpg";
-
-// Sets a decoded bitmap as the wallpaper.
-void SetBitmapAsWallpaper(const SkBitmap& bitmap) {
-  // Make the SkBitmap immutable as we won't modify it. This is important
-  // because otherwise it gets duplicated during painting, wasting memory.
-  SkBitmap immutable_bitmap(bitmap);
-  immutable_bitmap.setImmutable();
-  gfx::ImageSkia image = gfx::ImageSkia::CreateFrom1xBitmap(immutable_bitmap);
-  image.MakeThreadSafe();
-
-  chromeos::WallpaperManager* wallpaper_manager =
-      chromeos::WallpaperManager::Get();
-
-  const AccountId& account_id =
-      UserManager::Get()->GetPrimaryUser()->GetAccountId();
-  wallpaper::WallpaperFilesId wallpaper_files_id =
-      wallpaper_manager->GetFilesId(account_id);
-  const bool update_wallpaper =
-      account_id == UserManager::Get()->GetActiveUser()->GetAccountId();
-  // TODO(crbug.com/618922): Allow specifying layout.
-  wallpaper_manager->SetCustomWallpaper(
-      account_id, wallpaper_files_id, kAndroidWallpaperFilename,
-      wallpaper::WALLPAPER_LAYOUT_CENTER_CROPPED,
-      user_manager::User::CUSTOMIZED, image, update_wallpaper);
-
-  // TODO(crbug.com/618922): Register the wallpaper to Chrome OS wallpaper
-  // picker. Currently the new wallpaper does not appear there. The best way to
-  // make this happen seems to do the same things as wallpaper_api.cc and
-  // wallpaper_private_api.cc.
-}
-
-std::vector<uint8_t> EncodeImagePng(const gfx::ImageSkia image) {
-  std::vector<uint8_t> result;
-  gfx::PNGCodec::FastEncodeBGRASkBitmap(*image.bitmap(), true, &result);
-  return result;
-}
-
-ash::WallpaperController* GetWallpaperController() {
-  ash::WmShell* wm_shell = ash::WmShell::Get();
-  if (!wm_shell)
-    return nullptr;
-  return wm_shell->wallpaper_controller();
-}
-
-}  // namespace
-
-ArcWallpaperService::ArcWallpaperService(ArcBridgeService* bridge_service)
-    : ArcService(bridge_service), binding_(this) {
-  arc_bridge_service()->wallpaper()->AddObserver(this);
-}
-
-ArcWallpaperService::~ArcWallpaperService() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  // Make sure the callback is never called after destruction. It is safe to
-  // call Cancel() even when there is no in-flight request.
-  ImageDecoder::Cancel(this);
-  ash::WallpaperController* wc = GetWallpaperController();
-  if (wc)
-    wc->RemoveObserver(this);
-  arc_bridge_service()->wallpaper()->RemoveObserver(this);
-}
-
-void ArcWallpaperService::OnInstanceReady() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  mojom::WallpaperInstance* wallpaper_instance =
-      arc_bridge_service()->wallpaper()->GetInstanceForMethod("Init");
-  DCHECK(wallpaper_instance);
-  wallpaper_instance->Init(binding_.CreateInterfacePtrAndBind());
-  ash::WmShell::Get()->wallpaper_controller()->AddObserver(this);
-}
-
-void ArcWallpaperService::OnInstanceClosed() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  ash::WallpaperController* wc = GetWallpaperController();
-  if (wc)
-    wc->RemoveObserver(this);
-}
-
-void ArcWallpaperService::SetWallpaper(mojo::Array<uint8_t> png_data) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  ImageDecoder::Cancel(this);
-  ImageDecoder::StartWithOptions(this, png_data.PassStorage(),
-                                 ImageDecoder::ROBUST_PNG_CODEC, true);
-}
-
-void ArcWallpaperService::GetWallpaper(const GetWallpaperCallback& callback) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  ash::WallpaperController* wc = ash::WmShell::Get()->wallpaper_controller();
-  gfx::ImageSkia wallpaper = wc->GetWallpaper();
-  base::PostTaskAndReplyWithResult(
-      content::BrowserThread::GetBlockingPool(), FROM_HERE,
-      base::Bind(&EncodeImagePng, wallpaper), callback);
-}
-
-void ArcWallpaperService::OnImageDecoded(const SkBitmap& bitmap) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  SetBitmapAsWallpaper(bitmap);
-}
-
-void ArcWallpaperService::OnDecodeImageFailed() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  LOG(ERROR) << "Failed to decode wallpaper image.";
-}
-
-void ArcWallpaperService::OnWallpaperDataChanged() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  auto* wallpaper_instance =
-      arc_bridge_service()->wallpaper()->GetInstanceForMethod(
-          "OnWallpaperChanged", kMinOnWallpaperChangedVersion);
-  if (!wallpaper_instance)
-    return;
-  wallpaper_instance->OnWallpaperChanged();
-}
-
-}  // namespace arc