# Skia integration.
# Creates imported target skia::skia from third_party/skia/install/.

if(NOT PDFENGINE_WITH_SKIA)
    message(STATUS "Skia: disabled (PDFENGINE_WITH_SKIA=OFF). "
                   "Engine builds without raw Skia linkage.")
    return()
endif()

set(SKIA_INSTALL_DIR "${CMAKE_SOURCE_DIR}/third_party/skia/install"
    CACHE PATH "Root of the Skia install tree produced by build_skia.*")

find_path(SKIA_INCLUDE_DIR
    NAMES include/core/SkCanvas.h
    PATHS "${SKIA_INSTALL_DIR}"
    NO_DEFAULT_PATH)

find_library(SKIA_LIBRARY
    NAMES skia libskia
    PATHS "${SKIA_INSTALL_DIR}/lib"
    NO_DEFAULT_PATH)

if(NOT SKIA_INCLUDE_DIR OR NOT SKIA_LIBRARY)
    message(FATAL_ERROR
        "PDFENGINE_WITH_SKIA=ON but no Skia install tree was found under:\n"
        "    ${SKIA_INSTALL_DIR}\n"
        "Build Skia first (one-time, slow):\n"
        "    Windows:  pwsh third_party/skia/build_skia.ps1\n"
        "    Unix:     ./third_party/skia/build_skia.sh\n"
        "See third_party/skia/README.md.")
endif()

add_library(skia::skia STATIC IMPORTED GLOBAL)
set_target_properties(skia::skia PROPERTIES
    IMPORTED_LOCATION "${SKIA_LIBRARY}"
    INTERFACE_INCLUDE_DIRECTORIES "${SKIA_INCLUDE_DIR}")

if(UNIX AND NOT APPLE)
    set_property(TARGET skia::skia APPEND PROPERTY
        INTERFACE_LINK_LIBRARIES pthread dl)
endif()

message(STATUS "Skia: found")
message(STATUS "  include .. ${SKIA_INCLUDE_DIR}/include")
message(STATUS "  library .. ${SKIA_LIBRARY}")