1# Copyright 2014 The Chromium Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5# This file contains UI-related build flags (see features.gni for Chrome 6# feature-related ones). These should theoretically be moved to the ui 7# directory. 8# 9# However, today we have many "bad" dependencies on some of these flags from, 10# e.g. base, so they need to be global to match the GYP configuration. Also, 11# anything that needs a grit define must be in either this file or features.gni. 12# 13# PLEASE TRY TO AVOID ADDING FLAGS TO THIS FILE in cases where grit isn't 14# required. See the declare_args block of BUILDCONFIG.gn for advice on how 15# to set up feature flags. 16 17import("//build/config/chromecast_build.gni") 18 19declare_args() { 20 # Indicates if Ash is enabled. Ash is the Aura Shell which provides a 21 # desktop-like environment for Aura. Requires use_aura = true 22 use_ash = is_chromeos && !is_chromecast 23 24 # Indicates if Ozone is enabled. Ozone is a low-level library layer for Linux 25 # that does not require X11. Enabling this feature disables use of glib, x11, 26 # Pango, and Cairo. Default to false on non-Chromecast builds. 27 use_ozone = is_chromecast && !is_android 28 29 # Indicates if Aura is enabled. Aura is a low-level windowing library, sort 30 # of a replacement for GDI or GTK. 31 use_aura = is_win || is_linux 32 33 # True means the UI is built using the "views" framework. 34 toolkit_views = 35 (is_mac || is_win || is_chromeos || use_aura) && !is_chromecast 36 37 # Whether the entire browser uses toolkit-views on Mac instead of Cocoa. 38 mac_views_browser = false 39 40 # Whether we should use GTKv3 instead of GTKv2. 41 use_gtk3 = false 42 43 # Optional system libraries. 44 use_xkbcommon = false 45 46 # Whether we should use glib, a low level C utility library. 47 use_glib = is_linux 48 49 # Indicates if material design elements in the top chrome of the browser are 50 # enabled. 51 enable_topchrome_md = is_chromeos || is_win || is_linux || is_mac 52 53 # Indicates if Wayland display server support is enabled. 54 enable_wayland_server = is_chromeos 55 56 # Enable experimental vulkan backend. 57 enable_vulkan = false 58} 59 60# Additional dependent variables ----------------------------------------------- 61# 62# These variables depend on other variables and can't be set externally. 63 64# Use GPU accelerated cross process image transport by default on linux builds 65# with the Aura window manager. 66ui_compositor_image_transport = use_aura && is_linux 67 68use_default_render_theme = use_aura && !is_android 69 70# Indicates if the UI toolkit depends on X11. 71use_x11 = is_linux && !use_ozone 72 73# Turn off glib if Ozone is enabled. 74if (use_ozone) { 75 use_glib = false 76} 77 78if (is_linux && !use_ozone) { 79 use_cairo = true 80 use_pango = true 81} else { 82 use_cairo = false 83 use_pango = false 84} 85 86# Whether to use atk, the Accessibility ToolKit library 87use_atk = is_desktop_linux && use_x11 88 89use_clipboard_aurax11 = is_linux && use_aura && use_x11 90