ash/common/ash_switches.cc

// 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 "ash/common/ash_switches.h"

#include "base/command_line.h"
#include "base/sys_info.h"

namespace ash {
namespace switches {

// Enables an animated transition from the boot splash screen (Chrome logo on a
// white background) to the login screen.  Implies
// |kAshCopyHostBackgroundAtBoot| and doesn't make much sense if used in
// conjunction with |kDisableBootAnimation| (since the transition begins at the
// same time as the white/grayscale login screen animation).
const char kAshAnimateFromBootSplashScreen[] =
    "ash-animate-from-boot-splash-screen";

// Copies the host window's content to the system background layer at startup.
// Can make boot slightly slower, but also hides an even-longer awkward period
// where we display a white background if the login wallpaper takes a long time
// to load.
const char kAshCopyHostBackgroundAtBoot[] = "ash-copy-host-background-at-boot";

// Enable keyboard shortcuts useful for debugging.
const char kAshDebugShortcuts[] = "ash-debug-shortcuts";

// Disables the window backdrops normally used in maximize mode (TouchView).
const char kAshDisableMaximizeModeWindowBackdrop[] =
    "ash-disable-maximize-mode-window-backdrop";

#if defined(OS_CHROMEOS)
// Disable the support for WebContents to lock the screen orientation.
const char kAshDisableScreenOrientationLock[] =
    "ash-disable-screen-orientation-lock";
#endif

// Disable the Touch Exploration Mode. Touch Exploration Mode will no longer be
// turned on automatically when spoken feedback is enabled when this flag is
// set.
const char kAshDisableTouchExplorationMode[] =
    "ash-disable-touch-exploration-mode";

#if defined(OS_CHROMEOS)
// Enables fullscreen app list if Ash is in maximize mode.
const char kAshEnableFullscreenAppList[] = "ash-enable-fullscreen-app-list";

// Enables key bindings to scroll magnified screen.
const char kAshEnableMagnifierKeyScroller[] =
    "ash-enable-magnifier-key-scroller";

// Enables the palette next to the status area.
const char kAshEnablePalette[] = "ash-enable-palette";

// Enables experimental ash palette tools.
const char kAshEnablePaletteExperimentalFeatures[] =
    "ash-enable-palette-experimental-features";

// Enables the palette on every display, instead of only the internal one.
const char kAshEnablePaletteOnAllDisplays[] =
    "ash-enable-palette-on-all-displays";

#endif

// Enables the observation of accelerometer events to enter touch-view mode.
const char kAshEnableTouchView[] = "enable-touchview";

// Enables mirrored screen.
const char kAshEnableMirroredScreen[] = "ash-enable-mirrored-screen";

// Enables / disables a stable order between overview sessions, independent of
// the MRU order which attempts to preserve relative window positions.
const char kAshDisableStableOverviewOrder[] =
    "ash-disable-stable-overview-order";
const char kAshEnableStableOverviewOrder[] = "ash-enable-stable-overview-order";


// Enables touch view testing.
// TODO(skuhne): Remove DEBUG_TOGGLE_TOUCH_VIEW accelerator once this flag is
// removed.
const char kAshEnableTouchViewTesting[] = "ash-enable-touch-view-testing";

// Hides notifications that are irrelevant to Chrome OS device factory testing,
// such as battery level updates.
const char kAshHideNotificationsForFactory[] =
    "ash-hide-notifications-for-factory";

// Specifies if Material Design elements in Chrome OS system UI are enabled.
// Can be disabled / enabled / experimental allowing to launch incrementally.
const char kAshMaterialDesign[] = "ash-md";
const char kAshMaterialDesignDisabled[] = "disabled";
const char kAshMaterialDesignEnabled[] = "enabled";
const char kAshMaterialDesignExperimental[] = "experimental";

// Specifies a maximum number of preview windows in overview mode that still
// allows using mask layers to hide the original window header and use rounded
// corners.
const char kAshMaxWindowsToUseMaskInOverview[] = "ash-max-previews-to-use-mask";

// Specifies a maximum number of preview windows in overview mode that still
// allows using alpha shapes to hide the original window header.
const char kAshMaxWindowsToUseShapeInOverview[] =
    "ash-max-previews-to-use-shape";

// Enables the heads-up display for tracking touch points.
const char kAshTouchHud[] = "ash-touch-hud";

// (Most) Chrome OS hardware reports ACPI power button releases correctly.
// Standard hardware reports releases immediately after presses.  If set, we
// lock the screen or shutdown the system immediately in response to a press
// instead of displaying an interactive animation.
const char kAuraLegacyPowerButton[] = "aura-legacy-power-button";

#if defined(OS_CHROMEOS)
// Constrains the pointer movement within a root window on desktop.
bool ConstrainPointerToRoot() {
  const char kAshConstrainPointerToRoot[] = "ash-constrain-pointer-to-root";

  return base::SysInfo::IsRunningOnChromeOS() ||
         base::CommandLine::ForCurrentProcess()->HasSwitch(
             kAshConstrainPointerToRoot);
}

#endif

}  // namespace switches
}  // namespace ash