# Copyright (C) 2012 Raphael Kubo da Costa <rakuco@webkit.org>
#
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# are met:
# 1.  Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
# 2.  Redistributions in binary form must reproduce the above copyright
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#
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# IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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#[=======================================================================[.rst:
FindCairo
---------

Find the Cairo library.

Imported Targets
^^^^^^^^^^^^^^^^

This module defines the following :prop_tgt:`IMPORTED` target:

``Cairo::Cairo``
  The Cairo ``cairo`` library, if found

Result Variables
^^^^^^^^^^^^^^^^

This module will set the following variables in your project:

``Cairo_FOUND``
  true if the Cairo headers and libraries were found
``Cairo_INCLUDE_DIRS``
  directories containing the Cairo headers.
``Cairo_LIBRARIES``
  the library to link against
``Cairo_VERSION``
  the version of Cairo found

#]=======================================================================]

find_package(PkgConfig)
pkg_check_modules(PC_CAIRO QUIET cairo)

find_path(Cairo_INCLUDE_DIRS
  NAMES cairo.h
  HINTS ${PC_CAIRO_INCLUDEDIR}
        ${PC_CAIRO_INCLUDE_DIRS}
  PATH_SUFFIXES cairo
)

find_library(Cairo_LIBRARIES
  NAMES cairo
  HINTS ${PC_CAIRO_LIBDIR}
        ${PC_CAIRO_LIBRARY_DIRS}
)

if(Cairo_INCLUDE_DIRS)
  if(EXISTS "${Cairo_INCLUDE_DIRS}/cairo-version.h")
    FILE(READ "${Cairo_INCLUDE_DIRS}/cairo-version.h" CAIRO_VERSION_CONTENT)

    STRING(REGEX MATCH "#define +CAIRO_VERSION_MAJOR +([0-9]+)" _dummy "${CAIRO_VERSION_CONTENT}")
    SET(Cairo_VERSION_MAJOR "${CMAKE_MATCH_1}")

    STRING(REGEX MATCH "#define +CAIRO_VERSION_MINOR +([0-9]+)" _dummy "${CAIRO_VERSION_CONTENT}")
    SET(Cairo_VERSION_MINOR "${CMAKE_MATCH_1}")

    STRING(REGEX MATCH "#define +CAIRO_VERSION_MICRO +([0-9]+)" _dummy "${CAIRO_VERSION_CONTENT}")
    SET(Cairo_VERSION_MICRO "${CMAKE_MATCH_1}")

    SET(Cairo_VERSION "${Cairo_VERSION_MAJOR}.${Cairo_VERSION_MINOR}.${Cairo_VERSION_MICRO}")
  endif()
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Cairo REQUIRED_VARS Cairo_INCLUDE_DIRS Cairo_LIBRARIES
                                        VERSION_VAR Cairo_VERSION)

mark_as_advanced(
  Cairo_INCLUDE_DIRS
  Cairo_LIBRARIES
)

if(Cairo_FOUND AND NOT TARGET Cairo::Cairo)
  add_library(Cairo::Cairo INTERFACE IMPORTED)
  set_property(TARGET Cairo::Cairo PROPERTY
               INTERFACE_INCLUDE_DIRECTORIES "${Cairo_INCLUDE_DIRS}")
  set_property(TARGET Cairo::Cairo PROPERTY
               INTERFACE_LINK_LIBRARIES "${Cairo_LIBRARIES}")
endif()