cmake_minimum_required(VERSION 3.16)

set(PROJECT_VERSION "5.21.80") # Handled by release scripts
project(KWin VERSION ${PROJECT_VERSION})

set(QT_MIN_VERSION "5.15.0")
set(KF5_MIN_VERSION "5.78")

find_package(ECM ${KF5_MIN_VERSION} REQUIRED NO_MODULE)

include(FeatureSummary)
include(WriteBasicConfigVersionFile)
include(GenerateExportHeader)

# where to look first for cmake modules, before ${CMAKE_ROOT}/Modules/ is checked
set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${ECM_MODULE_PATH})

find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
    Concurrent
    Core
    DBus
    Quick
    QuickWidgets
    UiTools
    Widgets
    X11Extras
)

find_package(Qt5Test ${QT_MIN_VERSION} CONFIG QUIET)
set_package_properties(Qt5Test PROPERTIES
    PURPOSE "Required for tests"
    TYPE OPTIONAL
)
add_feature_info("Qt5Test" Qt5Test_FOUND "Required for building tests")
if (NOT Qt5Test_FOUND)
    set(BUILD_TESTING OFF CACHE BOOL "Build the testing tree.")
endif()

include(KDEInstallDirs)
include(KDECMakeSettings)
include(KDECompilerSettings NO_POLICY_SCOPE)
include(KDEClangFormat)

include(ECMInstallIcons)
include(ECMOptionalAddSubdirectory)
include(ECMConfiguredInstall)
include(ECMQtDeclareLoggingCategory)

add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0 -DQT_USE_QSTRINGBUILDER -DQT_NO_URL_CAST_FROM_STRING -DQT_NO_CAST_TO_ASCII)

# Prevent EGL headers from including platform headers, in particular Xlib.h.
add_definitions(-DMESA_EGL_NO_X11_HEADERS)
add_definitions(-DEGL_NO_X11)
add_definitions(-DEGL_NO_PLATFORM_SPECIFIC_TYPES)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# required frameworks by Core
find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
    Config
    ConfigWidgets
    CoreAddons
    Crash
    GlobalAccel
    I18n
    IconThemes
    IdleTime
    Notifications
    Package
    Plasma
    Wayland
    WidgetsAddons
    WindowSystem
)
# required frameworks by config modules
find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
    Completion
    Declarative
    KCMUtils
    KIO
    NewStuff
    Service
    TextWidgets
    XmlGui
)

find_package(Threads)
set_package_properties(Threads PROPERTIES
    PURPOSE "Needed for VirtualTerminal support in KWin Wayland"
    TYPE REQUIRED
)

# optional frameworks
find_package(KF5Activities ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5Activities PROPERTIES
    PURPOSE "Enable building of KWin with kactivities support"
    TYPE OPTIONAL
)
add_feature_info("KF5Activities" KF5Activities_FOUND "Enable building of KWin with kactivities support")

find_package(KF5DocTools ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5DocTools PROPERTIES
    PURPOSE "Enable building documentation"
    TYPE OPTIONAL
)
add_feature_info("KF5DocTools" KF5DocTools_FOUND "Enable building documentation")

find_package(KF5Runner ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5Runner PROPERTIES
    PURPOSE "Enable building of KWin with krunner support"
    TYPE OPTIONAL
    )
add_feature_info("KF5Runner" KF5Runner_FOUND "Enable building of KWin with krunner support")

find_package(KF5Kirigami2 ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5Kirigami2 PROPERTIES
    DESCRIPTION "A QtQuick based components set"
    PURPOSE "Required at runtime for Virtual desktop KCM"
    TYPE RUNTIME
)

find_package(KDecoration2 5.18.0 CONFIG REQUIRED)

find_package(KScreenLocker CONFIG REQUIRED)
set_package_properties(KScreenLocker PROPERTIES
    TYPE REQUIRED
    PURPOSE "For screenlocker integration in kwin_wayland"
)

find_package(KWaylandServer CONFIG REQUIRED)
set_package_properties(KWaylandServer PROPERTIES
    TYPE REQUIRED
    PURPOSE "For Wayland integration"
)

find_package(Breeze 5.9.0 CONFIG)
set_package_properties(Breeze PROPERTIES
    TYPE OPTIONAL
    PURPOSE "For setting the default window decoration plugin"
)
if (${Breeze_FOUND})
    if (${BREEZE_WITH_KDECORATION})
        set(HAVE_BREEZE_DECO true)
    else()
        set(HAVE_BREEZE_DECO FALSE)
    endif()
else()
    set(HAVE_BREEZE_DECO FALSE)
endif()
add_feature_info("Breeze-Decoration" HAVE_BREEZE_DECO "Default decoration plugin Breeze")

find_package(EGL)
set_package_properties(EGL PROPERTIES
    TYPE RUNTIME
    PURPOSE "Required to build KWin with EGL support"
)

find_package(epoxy)
set_package_properties(epoxy PROPERTIES
    DESCRIPTION "libepoxy"
    URL "https://github.com/anholt/libepoxy"
    TYPE REQUIRED
    PURPOSE "OpenGL dispatch library"
)

set(HAVE_DL_LIBRARY FALSE)
if (epoxy_HAS_GLX)
    find_library(DL_LIBRARY dl)
    if (DL_LIBRARY)
        set(HAVE_DL_LIBRARY TRUE)
    endif()
endif()

find_package(Wayland 1.2 OPTIONAL_COMPONENTS Egl)
set_package_properties(Wayland PROPERTIES
    TYPE REQUIRED
    PURPOSE "Required for building KWin with Wayland support"
)
add_feature_info("Wayland::EGL" Wayland_Egl_FOUND "Enable building of Wayland backend.")
set(HAVE_WAYLAND_EGL FALSE)
if (Wayland_Egl_FOUND)
    set(HAVE_WAYLAND_EGL TRUE)
endif()

find_package(XKB 0.7.0)
set_package_properties(XKB PROPERTIES
    TYPE REQUIRED
    PURPOSE "Required for building KWin with Wayland support"
)

find_package(Qt5XkbCommonSupport REQUIRED)

find_package(Libinput 1.9)
set_package_properties(Libinput PROPERTIES TYPE REQUIRED PURPOSE "Required for input handling on Wayland.")

find_package(UDev)
set_package_properties(UDev PROPERTIES
    URL "https://www.freedesktop.org/wiki/Software/systemd/"
    DESCRIPTION "Linux device library."
    TYPE REQUIRED
    PURPOSE "Required for input handling on Wayland."
)

find_package(Libdrm 2.4.62)
set_package_properties(Libdrm PROPERTIES TYPE OPTIONAL PURPOSE "Required for drm output on Wayland.")
set(HAVE_DRM FALSE)
if (Libdrm_FOUND)
    set(HAVE_DRM TRUE)
endif()

find_package(gbm)
set_package_properties(gbm PROPERTIES TYPE OPTIONAL PURPOSE "Required for egl output of drm backend.")
set(HAVE_GBM FALSE)
if (HAVE_DRM AND gbm_FOUND)
    set(HAVE_GBM TRUE)
endif()

option(KWIN_BUILD_EGL_STREAM_BACKEND "Enable building of EGLStream based DRM backend" ON)
if (HAVE_DRM AND KWIN_BUILD_EGL_STREAM_BACKEND)
    set(HAVE_EGL_STREAMS TRUE)
endif()

find_package(X11)
set_package_properties(X11 PROPERTIES
    DESCRIPTION "X11 libraries"
    URL "https://www.x.org"
    TYPE REQUIRED
)
add_feature_info("XInput" X11_Xi_FOUND "Required for poll-free mouse cursor updates")
set(HAVE_X11_XINPUT ${X11_Xinput_FOUND})

find_package(lcms2)
set_package_properties(lcms2 PROPERTIES
    DESCRIPTION "Small-footprint color management engine"
    URL "http://www.littlecms.com"
    TYPE OPTIONAL
)
add_feature_info("lcms2" lcms2_FOUND "Required for the color management system")

# All the required XCB components
find_package(XCB 1.10 REQUIRED COMPONENTS
    COMPOSITE
    CURSOR
    DAMAGE
    GLX
    ICCCM
    IMAGE
    KEYSYMS
    RANDR
    RENDER
    SHAPE
    SHM
    SYNC
    XCB
    XFIXES
)
set_package_properties(XCB PROPERTIES TYPE REQUIRED)

# and the optional XCB dependencies
if (XCB_ICCCM_VERSION VERSION_LESS "0.4")
    set(XCB_ICCCM_FOUND FALSE)
endif()
add_feature_info("XCB-ICCCM" XCB_ICCCM_FOUND "Required for building test applications for KWin")

find_package(X11_XCB)
set_package_properties(X11_XCB PROPERTIES
    PURPOSE "Required for building X11 windowed backend of kwin_wayland"
    TYPE OPTIONAL
)

# dependencies for QPA plugin
find_package(Qt5FontDatabaseSupport REQUIRED)
find_package(Qt5ThemeSupport REQUIRED)
find_package(Qt5EventDispatcherSupport REQUIRED)

find_package(Freetype REQUIRED)
set_package_properties(Freetype PROPERTIES
    DESCRIPTION "A font rendering engine"
    URL "https://www.freetype.org"
    TYPE REQUIRED
    PURPOSE "Needed for KWin's QPA plugin."
)
find_package(Fontconfig REQUIRED)
set_package_properties(Fontconfig PROPERTIES
    TYPE REQUIRED
    PURPOSE "Needed for KWin's QPA plugin."
)

find_package(Xwayland)
set_package_properties(Xwayland PROPERTIES
    URL "https://x.org"
    DESCRIPTION "Xwayland X server"
    TYPE RUNTIME
    PURPOSE "Needed for running kwin_wayland"
)
set(HAVE_XWAYLAND_LISTENFD ${Xwayland_HAVE_LISTENFD})

find_package(Libcap)
set_package_properties(Libcap PROPERTIES
    TYPE OPTIONAL
    PURPOSE "Needed for running kwin_wayland with real-time scheduling policy"
)
set(HAVE_LIBCAP ${Libcap_FOUND})

find_package(hwdata)
set_package_properties(hwdata PROPERTIES
    TYPE RUNTIME
    PURPOSE "Runtime-only dependency needed for mapping monitor hardware vendor IDs to full names"
    URL "https://github.com/vcrhonek/hwdata"
)

find_package(QAccessibilityClient CONFIG)
set_package_properties(QAccessibilityClient PROPERTIES
    URL "https://www.kde.org"
    DESCRIPTION "KDE client-side accessibility library"
    TYPE OPTIONAL
    PURPOSE "Required to enable accessibility features"
)
set(HAVE_ACCESSIBILITY ${QAccessibilityClient_FOUND})

include(ECMQMLModules)
ecm_find_qmlmodule(QtQuick 2.3)
ecm_find_qmlmodule(QtQuick.Controls 1.2)
ecm_find_qmlmodule(QtQuick.Layouts 1.3)
ecm_find_qmlmodule(QtQuick.Window 2.1)
ecm_find_qmlmodule(QtMultimedia 5.0)
ecm_find_qmlmodule(org.kde.kquickcontrolsaddons 2.0)
ecm_find_qmlmodule(org.kde.plasma.core 2.0)
ecm_find_qmlmodule(org.kde.plasma.components 2.0)

########### configure tests ###############
include(CMakeDependentOption)

option(KWIN_BUILD_DECORATIONS "Enable building of KWin decorations." ON)
option(KWIN_BUILD_KCMS "Enable building of KWin configuration modules." ON)
option(KWIN_BUILD_TABBOX "Enable building of KWin Tabbox functionality" ON)
option(KWIN_BUILD_XRENDER_COMPOSITING "Enable building of KWin with XRender Compositing support" ON)
cmake_dependent_option(KWIN_BUILD_ACTIVITIES "Enable building of KWin with kactivities support" ON "KF5Activities_FOUND" OFF)
cmake_dependent_option(KWIN_BUILD_RUNNERS "Enable building of KWin with krunner support" ON "KF5Runner_FOUND" OFF)
cmake_dependent_option(KWIN_BUILD_CMS "Enable building of KWin with CMS" ON "lcms2_FOUND" OFF)

# Binary name of KWin
set(KWIN_NAME "kwin")
set(KWIN_INTERNAL_NAME_X11 "kwin_x11")
set(KWIN_INTERNAL_NAME_WAYLAND "kwin_wayland")

# KWIN_HAVE_XRENDER_COMPOSITING - whether XRender-based compositing support is available: may be disabled
if (KWIN_BUILD_XRENDER_COMPOSITING)
    set(KWIN_HAVE_XRENDER_COMPOSITING 1)
endif()

include_directories(${XKB_INCLUDE_DIR})

set(HAVE_EPOXY_GLX ${epoxy_HAS_GLX})

# for kwin internal things
set(HAVE_X11_XCB ${X11_XCB_FOUND})

include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckSymbolExists)
check_include_files(unistd.h HAVE_UNISTD_H)
check_include_files(malloc.h HAVE_MALLOC_H)

check_include_file("sys/prctl.h" HAVE_SYS_PRCTL_H)
check_symbol_exists(PR_SET_DUMPABLE "sys/prctl.h" HAVE_PR_SET_DUMPABLE)
check_symbol_exists(PR_SET_PDEATHSIG "sys/prctl.h" HAVE_PR_SET_PDEATHSIG)
check_include_file("sys/procctl.h" HAVE_SYS_PROCCTL_H)
check_symbol_exists(PROC_TRACE_CTL "sys/procctl.h" HAVE_PROC_TRACE_CTL)
if (HAVE_PR_SET_DUMPABLE OR HAVE_PROC_TRACE_CTL)
    set(CAN_DISABLE_PTRACE TRUE)
endif()
add_feature_info("prctl/procctl tracing control"
                 CAN_DISABLE_PTRACE
                 "Required for disallowing ptrace on kwin_wayland process")

check_include_file("sys/sysmacros.h" HAVE_SYS_SYSMACROS_H)

check_include_file("linux/vt.h" HAVE_LINUX_VT_H)
add_feature_info("linux/vt.h"
                 HAVE_LINUX_VT_H
                 "Required for virtual terminal support under wayland")
check_include_file("linux/fb.h"    HAVE_LINUX_FB_H)
add_feature_info("linux/fb.h"
                 HAVE_LINUX_FB_H
                 "Required for the fbdev backend")

check_symbol_exists(SCHED_RESET_ON_FORK "sched.h" HAVE_SCHED_RESET_ON_FORK)
add_feature_info("SCHED_RESET_ON_FORK"
                 HAVE_SCHED_RESET_ON_FORK
                 "Required for running kwin_wayland with real-time scheduling")


pkg_check_modules(PipeWire IMPORTED_TARGET libpipewire-0.3)
add_feature_info(PipeWire PipeWire_FOUND "Required for Wayland screencasting")

########### global ###############

include_directories(BEFORE
    ${CMAKE_CURRENT_BINARY_DIR}/src/libkwineffects
    ${CMAKE_CURRENT_BINARY_DIR}/src
    ${CMAKE_CURRENT_SOURCE_DIR}/src/libkwineffects
    ${CMAKE_CURRENT_SOURCE_DIR}/src/effects
    ${CMAKE_CURRENT_SOURCE_DIR}/src/tabbox
    ${CMAKE_CURRENT_SOURCE_DIR}/src/platformsupport
)

if (KF5DocTools_FOUND)
    add_subdirectory(doc)
endif()

add_subdirectory(data)
add_subdirectory(kconf_update)
add_subdirectory(src)

if (BUILD_TESTING)
    find_package(WaylandProtocols 1.19 REQUIRED)
    find_package(QtWaylandScanner ${QT_MIN_VERSION} REQUIRED)
    find_package(Wayland REQUIRED COMPONENTS Client)

    add_subdirectory(autotests)
    add_subdirectory(tests)
endif()

# add clang-format target for all our real source files
file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES *.cpp *.h)
kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})

feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)

include(CMakePackageConfigHelpers)
set(CMAKECONFIG_INSTALL_DIR "${KDE_INSTALL_CMAKEPACKAGEDIR}/KWinDBusInterface")
configure_package_config_file(KWinDBusInterfaceConfig.cmake.in
    "${CMAKE_CURRENT_BINARY_DIR}/KWinDBusInterfaceConfig.cmake"
    PATH_VARS KDE_INSTALL_DBUSINTERFACEDIR
    INSTALL_DESTINATION ${CMAKECONFIG_INSTALL_DIR})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/KWinDBusInterfaceConfig.cmake
    DESTINATION ${CMAKECONFIG_INSTALL_DIR})


# plasma-kwin_wayland.service.in is currently disabled as plasma-workspace currently launches
# kwin-wayland explicitly. Porting this is currently blocked on propogating DISPLAY
ecm_install_configured_files(INPUT plasma-kwin_x11.service.in @ONLY
            DESTINATION ${SYSTEMD_USER_UNIT_INSTALL_DIR})