ash/public/interfaces/wallpaper.mojom

// 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.

module ash.mojom;

import "skia/public/interfaces/bitmap.mojom";

// These values match wallpaper::WallpaperLayout.
enum WallpaperLayout { CENTER, CENTER_CROPPED, STRETCH, TILE, };

// Used by Chrome to set the wallpaper displayed by ash.
interface WallpaperController {
  // Set the wallpaper bitmap and layout used for the ash desktop background.
  // A null or empty |wallpaper| bitmap is treated as a no-op.
  // TODO(crbug.com/655875): Optimize ash wallpaper transport; avoid sending
  // large bitmaps over Mojo; use shared memory like BitmapUploader, etc.
  SetWallpaper(skia.mojom.Bitmap? wallpaper, WallpaperLayout layout);
};

// Used by ash to trigger Chrome's wallpaper picker functionality.
interface WallpaperManager {
  // Open the wallpaper picker window.
  Open();
};