# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

# @ECLASS: wxwidgets.eclass
# @MAINTAINER:
# wxwidgets@gentoo.org
# @BLURB: Manages build configuration for wxGTK-using packages.
# @DESCRIPTION:
#  This eclass sets up the proper environment for ebuilds using the wxGTK
#  libraries.  Ebuilds using wxPython do not need to inherit this eclass.
#
#  More specifically, this eclass controls the configuration chosen by the
#  /usr/bin/wx-config wrapper.
#
#  Using the eclass is simple:
#
#    - set WX_GTK_VER equal to a SLOT of wxGTK
#    - call setup-wxwidgets()
#
#  The configuration chosen is based on the version required and the flags
#  wxGTK was built with.

if [[ -z ${_WXWIDGETS_ECLASS} ]]; then

case ${EAPI} in
	0|1|2|3|4|5)
		inherit eutils flag-o-matic multilib
		;;
	*)
		die "EAPI=${EAPI:-0} is not supported"
		;;
esac

# We do this in global scope so ebuilds can get sane defaults just by
# inheriting. Note: this will be going away once all ebuilds are using
# setup-wxwidgets
if [[ -z ${WX_CONFIG} ]]; then
	if [[ -n ${WX_GTK_VER} ]]; then
		for _wxtoolkit in mac gtk2 base; do
			# newer versions don't have a seperate debug profile
			for _wxdebug in xxx release- debug-; do
				_wxconf="${_wxtoolkit}-unicode-${_wxdebug/xxx/}${WX_GTK_VER}"

				[[ -f ${EPREFIX}/usr/$(get_libdir)/wx/config/${_wxconf} ]] || continue

				WX_CONFIG="${EPREFIX}/usr/$(get_libdir)/wx/config/${_wxconf}"
				WX_ECLASS_CONFIG="${WX_CONFIG}"
				break
			done
			[[ -n ${WX_CONFIG} ]] && break
		done
		[[ -n ${WX_CONFIG} ]] && export WX_CONFIG WX_ECLASS_CONFIG
	fi
fi
unset _wxtoolkit
unset _wxdebug
unset _wxconf

# @FUNCTION:    setup-wxwidgets
# @DESCRIPTION:
#
#  Call this in your ebuild to set up the environment for wxGTK.  Besides
#  controlling the wx-config wrapper this exports WX_CONFIG containing
#  the path to the config in case it needs to be passed to a build system.
#
#  In wxGTK-2.9 and later it also controls the level of debugging output
#  from the libraries.  In these versions debugging features are enabled
#  by default and need to be disabled at the package level.  Because this
#  causes many warning dialogs to regularly pop up we add -DNDEBUG to
#  CPPFLAGS by default, unless your ebuild has a debug USE flag and it's
#  enabled.  If you don't like this behavior you can set WX_DISABLE_DEBUG
#  to disable it.
#
#  See: http://docs.wxwidgets.org/trunk/overview_debugging.html

setup-wxwidgets() {
	local wxtoolkit wxdebug wxconf

	[[ -z ${WX_GTK_VER} ]] \
		&& die "WX_GTK_VER must be set before calling $FUNCNAME."

	case "${WX_GTK_VER}" in
		3.0-gtk3)
			wxtoolkit=gtk3
			if [[ -z ${WX_DISABLE_DEBUG} ]]; then
				use_if_iuse debug || append-cppflags -DNDEBUG
			fi
			;;
		2.9|3.0)
			wxtoolkit=gtk2
			if [[ -z ${WX_DISABLE_DEBUG} ]]; then
				use_if_iuse debug || append-cppflags -DNDEBUG
			fi
			;;
		2.8)
			wxtoolkit=gtk2
			wxdebug="release-"
			has_version x11-libs/wxGTK:${WX_GTK_VER}[debug] && wxdebug="debug-"
			;;
		*)
			die "Invalid WX_GTK_VER: must be set to a valid wxGTK SLOT"
			;;
	esac

	# toolkit overrides
	if has_version "x11-libs/wxGTK:${WX_GTK_VER}[aqua]"; then
		wxtoolkit="mac"
	elif ! has_version "x11-libs/wxGTK:${WX_GTK_VER}[X]"; then
		wxtoolkit="base"
	fi

	wxconf="${wxtoolkit}-unicode-${wxdebug}${WX_GTK_VER}"

	[[ ! -f ${EPREFIX}/usr/$(get_libdir)/wx/config/${wxconf} ]] \
		&& die "Failed to find configuration ${wxconf}"

	export WX_CONFIG="${EPREFIX}/usr/$(get_libdir)/wx/config/${wxconf}"
	export WX_ECLASS_CONFIG="${WX_CONFIG}"

	echo
	einfo "Requested wxWidgets:        ${WX_GTK_VER}"
	einfo "Using wxWidgets:            ${wxconf}"
	echo
}

# deprecated
need-wxwidgets() {
	setup-wxwidgets
}

_WXWIDGETS_ECLASS=1
fi