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# Copyright 2014 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.
# This file contains UI-related build flags (see features.gni for Chrome
# feature-related ones). These should theoretically be moved to the ui
# directory.
# However, today we have many "bad" dependencies on some of these flags from,
# e.g. base, so they need to be global to match the GYP configuration. Also,
# anything that needs a grit define must be in either this file or features.gni.
# required. See the declare_args block of for advice on how
# to set up feature flags.
declare_args() {
# Indicates if Ash is enabled. Ash is the Aura Shell which provides a
# desktop-like environment for Aura. Requires use_aura = true
use_ash = is_chromeos && !is_chromecast
# Indicates if Ozone is enabled. Ozone is a low-level library layer for Linux
# that does not require X11. Enabling this feature disables use of glib, x11,
# Pango, and Cairo. Default to false on non-Chromecast builds.
use_ozone = is_chromecast && !is_android
# Indicates if Aura is enabled. Aura is a low-level windowing library, sort
# of a replacement for GDI or GTK.
use_aura = is_win || is_linux
# True means the UI is built using the "views" framework.
toolkit_views =
(is_mac || is_win || is_chromeos || use_aura) && !is_chromecast
# Whether the entire browser uses toolkit-views on Mac instead of Cocoa.
mac_views_browser = false
# Whether we should use GTKv3 instead of GTKv2.
use_gtk3 = false
# Optional system libraries.
use_xkbcommon = false
# Whether we should use glib, a low level C utility library.
use_glib = is_linux
# Indicates if material design elements in the top chrome of the browser are
# enabled.
enable_topchrome_md = is_chromeos || is_win || is_linux || is_mac
# Indicates if Wayland display server support is enabled.
enable_wayland_server = is_chromeos
# Enable experimental vulkan backend.
enable_vulkan = false
# Additional dependent variables -----------------------------------------------
# These variables depend on other variables and can't be set externally.
# Use GPU accelerated cross process image transport by default on linux builds
# with the Aura window manager.
ui_compositor_image_transport = use_aura && is_linux
use_default_render_theme = use_aura && !is_android
# Indicates if the UI toolkit depends on X11.
use_x11 = is_linux && !use_ozone
# Turn off glib if Ozone is enabled.
if (use_ozone) {
use_glib = false
if (is_linux && !use_ozone) {
use_cairo = true
use_pango = true
} else {
use_cairo = false
use_pango = false
# Whether to use atk, the Accessibility ToolKit library
use_atk = is_desktop_linux && use_x11
use_clipboard_aurax11 = is_linux && use_aura && use_x11