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+#
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+# Copyright (c) Contributors to the Open 3D Engine Project.
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+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
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+#
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+# SPDX-License-Identifier: Apache-2.0 OR MIT
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+#
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+#
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+
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+if(TARGET 3rdParty::Qt::Core) # Check we are not called multiple times
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+ return()
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+endif()
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+
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+set(QT_PACKAGE_NAME qt)
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+
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+set(QT_PATH "${CMAKE_CURRENT_LIST_DIR}/qt" CACHE STRING "The root path to Qt" FORCE)
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+mark_as_advanced(QT_PATH)
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+if(NOT EXISTS ${QT_PATH})
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+ message(FATAL_ERROR "Cannot find 3rdParty library ${QT_PACKAGE_NAME} on path ${QT_PATH}")
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+endif()
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+
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+# Force-set QtCore's version here to ensure CMake detects Qt's existence and allows AUTOMOC to work
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+set(Qt5Core_VERSION_MAJOR "5" CACHE STRING "Qt's major version" FORCE)
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+set(Qt5Core_VERSION_MINOR "15" CACHE STRING "Qt's minor version" FORCE)
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+set(Qt5Core_VERSION_PATCH "2" CACHE STRING "Qt's patch version" FORCE)
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+mark_as_advanced(Qt5Core_VERSION_MAJOR)
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+mark_as_advanced(Qt5Core_VERSION_MINOR)
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+mark_as_advanced(Qt5Core_VERSION_PATCH)
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+
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+set(QT5_COMPONENTS
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+ Core
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+ Concurrent
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+ Gui
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+ LinguistTools
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+ Network
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+ OpenGL
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+ Svg
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+ Test
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+ Widgets
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+ Xml
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+)
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+
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+include(${CMAKE_CURRENT_LIST_DIR}/Platform/${PAL_PLATFORM_NAME}/Qt_${PAL_PLATFORM_NAME_LOWERCASE}.cmake)
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+
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+list(APPEND CMAKE_PREFIX_PATH ${QT_LIB_PATH}/cmake/Qt5)
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+
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+# Clear the cache for found DIRs
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+unset(Qt5_DIR CACHE)
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+foreach(component ${QT5_COMPONENTS})
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+ unset(Qt5${component}_DIR CACHE)
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+endforeach()
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+unset(Qt5Positioning_DIR CACHE)
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+unset(Qt5PrintSupport_DIR CACHE)
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+unset(Qt5Qml_DIR CACHE)
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+unset(Qt5QmlModels_DIR CACHE)
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+unset(Qt5Quick_DIR CACHE)
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+
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+# Populate the Qt5 configurations
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+find_package(Qt5
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+ COMPONENTS ${QT5_COMPONENTS}
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+ REQUIRED
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+ NO_CMAKE_PACKAGE_REGISTRY
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+)
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+
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+# Now create libraries that wrap the dependency so we can refer to them in our format
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+foreach(component ${QT5_COMPONENTS})
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+ if(TARGET Qt5::${component})
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+
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+ # Convert the includes to system includes
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+ get_target_property(system_includes Qt5::${component} INTERFACE_INCLUDE_DIRECTORIES)
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+ set_target_properties(Qt5::${component} PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "") # Clear it in case someone refers to it
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+ ly_target_include_system_directories(TARGET Qt5::${component}
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+ INTERFACE
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+ ${system_includes}
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+ ${QT_PATH}/include
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+ )
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+
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+ # Alias the target with our prefix
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+ add_library(3rdParty::Qt::${component} ALIAS Qt5::${component})
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+ mark_as_advanced(Qt5${component}_DIR) # Hiding from GUI
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+
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+ # Qt only has debug and release, we map the configurations we use in o3de. We map all the configurations
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+ # except debug to release
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+ foreach(conf IN LISTS CMAKE_CONFIGURATION_TYPES)
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+ string(TOUPPER ${conf} UCONF)
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+ ly_qt_configuration_mapping(${UCONF} MAPPED_CONF)
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+ set_target_properties(Qt5::${component} PROPERTIES
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+ MAP_IMPORTED_CONFIG_${UCONF} ${MAPPED_CONF}
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+ )
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+ endforeach()
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+
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+ endif()
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+endforeach()
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+
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+# Some extra DIR variables we want to hide from GUI
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+mark_as_advanced(Qt5_DIR) # Hiding from GUI
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+mark_as_advanced(Qt5LinguistTools_DIR) # Hiding from GUI, this variable comes from the LinguistTools module
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+mark_as_advanced(Qt5Positioning_DIR)
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+mark_as_advanced(Qt5PrintSupport_DIR)
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+mark_as_advanced(Qt5Qml_DIR)
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+mark_as_advanced(Qt5QmlModels_DIR)
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+mark_as_advanced(Qt5Quick_DIR)
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+
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+# Special case for Qt::Gui, we are using the private headers...
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+ly_target_include_system_directories(TARGET Qt5::Gui
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+ INTERFACE "${Qt5Gui_PRIVATE_INCLUDE_DIRS}"
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+)
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+
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+# Another special case: Qt:Widgets, we are also using private headers
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+ly_target_include_system_directories(TARGET Qt5::Widgets
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+ INTERFACE "${Qt5Widgets_PRIVATE_INCLUDE_DIRS}"
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+)
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+
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+# Qt plugins/translations/aux files.
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+# We create libraries that wraps them so they get deployed properly.
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+# This used to be deployed through winqtdeploy/macqtdeploy, however, those tools
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+# are old and unmaintaned, macqtdeploy takes long times to run
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+add_library(3rdParty::Qt::Core::Translations INTERFACE IMPORTED GLOBAL)
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+file(GLOB tranlation_files ${QT_PATH}/translations/qt_*.qm)
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+if(tranlation_files)
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+ ly_add_target_files(TARGETS 3rdParty::Qt::Core::Translations
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+ FILES ${tranlation_files}
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+ OUTPUT_SUBDIRECTORY translations
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+ )
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+endif()
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+ly_add_dependencies(Qt5::Core 3rdParty::Qt::Core::Translations)
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+
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+# plugins, each platform will define the files it has and the OUTPUT_SUBDIRECTORY
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+set(QT_PLUGINS
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+ Network
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+ Gui
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+ Widgets
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+)
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+foreach(plugin ${QT_PLUGINS})
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+ add_library(3rdParty::Qt::${plugin}::Plugins INTERFACE IMPORTED GLOBAL)
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+ ly_add_dependencies(Qt5::${plugin} 3rdParty::Qt::${plugin}::Plugins)
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+endforeach()
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+include(${CMAKE_CURRENT_LIST_DIR}/Platform/${PAL_PLATFORM_NAME}/QtPlugin_${PAL_PLATFORM_NAME_LOWERCASE}.cmake)
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+
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+# UIC executable
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+unset(QT_UIC_EXECUTABLE CACHE)
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+find_program(QT_UIC_EXECUTABLE uic HINTS "${QT_PATH}/bin")
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+mark_as_advanced(QT_UIC_EXECUTABLE) # Hiding from GUI
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+
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+# RCC executable
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+unset(AUTORCC_EXECUTABLE CACHE)
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+find_program(AUTORCC_EXECUTABLE rcc HINTS "${QT_PATH}/bin")
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+mark_as_advanced(AUTORCC_EXECUTABLE) # Hiding from GUI
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+set(Qt5Core_RCC_EXECUTABLE "${AUTORCC_EXECUTABLE}" CACHE FILEPATH "Qt's resource compiler, used by qt5_add_resources" FORCE)
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+mark_as_advanced(Qt5Core_RCC_EXECUTABLE) # Hiding from GUI
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+
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+# LRELEASE executable
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+unset(QT_LRELEASE_EXECUTABLE CACHE)
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+find_program(QT_LRELEASE_EXECUTABLE lrelease HINTS "${QT_PATH}/bin")
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+mark_as_advanced(QT_LRELEASE_EXECUTABLE) # Hiding from GUI
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+if(NOT QT_LRELEASE_EXECUTABLE)
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+ message(FATAL_ERROR "Qt's lrelease executbale not found")
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+endif()
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+set(Qt5_LRELEASE_EXECUTABLE "${QT_LRELEASE_EXECUTABLE}" CACHE FILEPATH "Qt's lrelease executable, used by qt5_add_translation" FORCE)
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+mark_as_advanced(Qt5_LRELEASE_EXECUTABLE) # Hiding from GUI
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+
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+#! ly_qt_uic_target: handles qt's ui files by injecting uic generation
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+#
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+# AUTOUIC has issues to detect changes in UIC files and trigger regeneration:
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+# https://gitlab.kitware.com/cmake/cmake/-/issues/18741
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+# So instead, we are going to manually wrap the files. We dont use qt5_wrap_ui because
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+# it outputs to ${CMAKE_CURRENT_BINARY_DIR}/ui_${outfile}.h and we want to follow the
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+# same folder structure that AUTOUIC uses
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+#
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+function(ly_qt_uic_target TARGET)
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+
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+ get_target_property(all_ui_sources ${TARGET} SOURCES)
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+ list(FILTER all_ui_sources INCLUDE REGEX "^.*\\.ui$")
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+ if(NOT all_ui_sources)
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+ message(FATAL_ERROR "Target ${TARGET} contains AUTOUIC but doesnt have any .ui file")
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+ endif()
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+
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+ if(AUTOGEN_BUILD_DIR)
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+ set(gen_dir ${AUTOGEN_BUILD_DIR})
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+ else()
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+ set(gen_dir ${CMAKE_CURRENT_BINARY_DIR}/${TARGET}_autogen/include)
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+ endif()
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+
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+ foreach(ui_source ${all_ui_sources})
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+
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+ get_filename_component(filename ${ui_source} NAME_WE)
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+ get_filename_component(dir ${ui_source} DIRECTORY)
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+ if(IS_ABSOLUTE ${dir})
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+ file(RELATIVE_PATH dir ${CMAKE_CURRENT_SOURCE_DIR} ${dir})
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+ endif()
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+
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+ set(outfolder ${gen_dir}/${dir})
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+ set(outfile ${outfolder}/ui_${filename}.h)
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+ get_filename_component(infile ${ui_source} ABSOLUTE)
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+
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+ file(MAKE_DIRECTORY ${outfolder})
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+ add_custom_command(OUTPUT ${outfile}
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+ COMMAND ${QT_UIC_EXECUTABLE} -o ${outfile} ${infile}
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+ MAIN_DEPENDENCY ${infile} VERBATIM
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+ COMMENT "UIC ${infile}"
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+ )
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+
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+ set_source_files_properties(${infile} PROPERTIES SKIP_AUTOUIC TRUE)
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+ set_source_files_properties(${outfile} PROPERTIES
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+ SKIP_AUTOMOC TRUE
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+ SKIP_AUTOUIC TRUE
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+ GENERATED TRUE
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+ )
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+ list(APPEND all_ui_wrapped_sources ${outfile})
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+
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+ endforeach()
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+
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+ # Add files to the target
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+ target_sources(${TARGET} PRIVATE ${all_ui_wrapped_sources})
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+ source_group("Generated Files" FILES ${all_ui_wrapped_sources})
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+
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+ # Add include directories relative to the generated folder
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+ # query for the property first to avoid the "NOTFOUND" in a list
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+ get_property(has_includes TARGET ${TARGET} PROPERTY INCLUDE_DIRECTORIES SET)
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+ if(has_includes)
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+ get_property(all_include_directories TARGET ${TARGET} PROPERTY INCLUDE_DIRECTORIES)
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+ foreach(dir ${all_include_directories})
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+ if(IS_ABSOLUTE ${dir})
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+ file(RELATIVE_PATH dir ${CMAKE_CURRENT_SOURCE_DIR} ${dir})
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+ endif()
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+ list(APPEND new_includes ${gen_dir}/${dir})
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+ endforeach()
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+ endif()
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+ list(APPEND new_includes ${gen_dir})
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+ target_include_directories(${TARGET} PRIVATE ${new_includes})
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+
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+endfunction()
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+
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+#! ly_add_translations: adds translations (ts) to a target.
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+#
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+# This wrapper will generate a qrc file with those translations and add the files under "prefix" and add them to
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+# the indicated targets. These files will be added under the "Generated Files" filter
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+#
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+# \arg:TARGETS name of the targets that the translations will be added to
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+# \arg:PREFIX prefix where the translation will be located within the qrc file
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+# \arg:FILES translation files to add
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+#
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+function(ly_add_translations)
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+
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+ set(options)
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+ set(oneValueArgs PREFIX)
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+ set(multiValueArgs TARGETS FILES)
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+
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+ cmake_parse_arguments(ly_add_translations "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
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+
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+ # Validate input arguments
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+ if(NOT ly_add_translations_TARGETS)
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+ message(FATAL_ERROR "You must provide at least one target")
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+ endif()
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+ if(NOT ly_add_translations_FILES)
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+ message(FATAL_ERROR "You must provide at least a translation file")
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+ endif()
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+
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+ qt5_add_translation(TRANSLATED_FILES ${ly_add_translations_FILES})
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+
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+ set(qrc_file_contents
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+"<RCC>
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+ <qresource prefix=\"/${ly_add_translations_PREFIX}\">
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+")
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+ foreach(file ${TRANSLATED_FILES})
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+ get_filename_component(filename ${file} NAME)
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+ string(APPEND qrc_file_contents " <file>${filename}</file>
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+")
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+ endforeach()
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+ string(APPEND qrc_file_contents " </qresource>
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+</RCC>
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+")
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+ set(qrc_file_path ${CMAKE_CURRENT_BINARY_DIR}/i18n_${ly_add_translations_PREFIX}.qrc)
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+ file(WRITE
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+ ${qrc_file_path}
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+ ${qrc_file_contents}
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+ )
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+ set_source_files_properties(
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+ ${TRANSLATED_FILES}
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+ ${qrc_file_path}
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+ PROPERTIES
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+ GENERATED TRUE
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+ SKIP_AUTORCC TRUE
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+ )
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+ qt5_add_resources(RESOURCE_FILE ${qrc_file_path})
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+
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+ foreach(target ${ly_add_translations_TARGETS})
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+ target_sources(${target} PRIVATE "${TRANSLATED_FILES};${qrc_file_path};${RESOURCE_FILE}")
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+ endforeach()
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+
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+endfunction()
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Steve Pham