class Gtkglext < Formula
  desc "OpenGL extension to GTK+"
  homepage "https://gitlab.gnome.org/Archive/gtkglext"
  url "https://download.gnome.org/sources/gtkglext/1.2/gtkglext-1.2.0.tar.gz"
  sha256 "e5073f3c6b816e7fa67d359d9745a5bb5de94a628ac85f624c992925a46844f9"
  revision 3

  bottle do
    rebuild 2
    sha256 cellar: :any, arm64_monterey: "a42443e10af16bb89c45e2ebed7735f8a5693219e00964a6a8599cf105e4f289"
    sha256 cellar: :any, arm64_big_sur:  "0e7132d3e408cb5d9bbff6e8f6e93bc6460ebbb4f3e6f365d8cb331edee9435a"
    sha256 cellar: :any, monterey:       "9f4a28bef624c621d498d6f0c8dc1c0193735ab5f63b60373a9969dba9736c34"
    sha256 cellar: :any, big_sur:        "b367a1ac2118e2bf146d4efd53f5c7b3870b1f0e123ebfc072edf3e1c7eee8d6"
    sha256 cellar: :any, catalina:       "34d57545ff116ecf21f8e6f8695a6a20ac8f1fe90439be0f166420d4623b0050"
    sha256 cellar: :any, mojave:         "aa701707e57b30e6bba5e9f4b28993e7393d43f471994a46572daaee6d678a55"
    sha256 cellar: :any, high_sierra:    "6862527d7b86b6940a38f9fb189085d80b6ea67ee80adc2794e550999e8cc86c"
    sha256               x86_64_linux:   "6e82f4383e3a88e158ad287109440ad81b8298efb14045efbc33b892a10482dc"
  end

  depends_on "pkg-config" => :build
  depends_on "glib"
  depends_on "gtk+"

  on_linux do
    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
    depends_on "mesa-glu"

    resource("pangox-compat") do
      url "https://gitlab.gnome.org/Archive/pangox-compat/-/archive/0.0.2/pangox-compat-0.0.2.tar.gz"
      sha256 "c8076b3d54d5088974dbb088a9d991686d7340f368beebaf437b78dfed6c5cd5"

      # Taken from https://aur.archlinux.org/cgit/aur.git/plain/0002-disable-shaper.patch?h=pangox-compat.
      patch :DATA
    end
  end

  # All these MacPorts patches have already been included upstream. A new release
  # of gtkglext for gtk+2.0 remains uncertain though.
  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-configure.diff"
    sha256 "aca35cd6ae28613b375301068715f82b59bd066a32b2f4d046177478950ab026"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-examples-pixmap-mixed.c.diff"
    sha256 "d2fe00bfcf96b3c78dd4b01aa119a7860a34ca6080c57f0ccc7a8e2fc4a3c92b"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-examples-pixmap.c.diff"
    sha256 "d955b18784d3e83c1f698e63875d98de5bad9eae1e84b66549dfe25d9ff94d51"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-gdk-gdkglglext.h.diff"
    sha256 "a1b6a97016013d5cda73760bbf2a970bae318153c2810291b81bd49ed67de80b"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-gdk-gdkglquery.c.diff"
    sha256 "a419b8d523f123d1ab59e4de1105cdfc72bf5a450db8031809dcbc84932b539f"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-gdk-gdkglshapes.c.diff"
    sha256 "bc01fccec833f7ede39ee06ecc2a2ad5d2b30cf703dc66d2a40a912104c6e1f5"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-gdk-makefile.in.diff"
    sha256 "d0bc857f258640bf4f423a79e8475e8cf86e24f9994c0a85475ce87f41bcded6"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-gtk-gtkglwidget.c.diff"
    sha256 "7f7918d5a83c8f36186026a92587117a94014e7b21203fe9eb96a1c751c3c317"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-gtk-makefile.in.diff"
    sha256 "49f58421a12c2badd84ae6677752ba9cc23c249dac81987edf94abaf0d088ff6"
  end

  patch :p0 do
    url "https://raw.githubusercontent.com/Homebrew/formula-patches/21e7e01/gtkglext/patch-makefile.in.diff"
    sha256 "0d112b417d6c51022e31701037aa49ea50f270d3a34c263599ac0ef64c2f6743"
  end

  patch :p0 do
    url "https://trac.macports.org/raw-attachment/ticket/56260/patch-index-gdkglshapes-osx.diff"
    sha256 "699ddd676b12a6c087e3b0a7064cc9ef391eac3d84c531b661948bf1699ebcc5"
  end

  def install
    unless OS.mac?
      resource("pangox-compat").stage do
        system "./autogen.sh"
        system "./configure", "--prefix=#{libexec}"
        system "make"
        system "make", "install"
      end
      ENV.append_path "PKG_CONFIG_PATH", libexec/"lib/pkgconfig"

      system "autoreconf", "-fvi"
    end

    args = *std_configure_args
    if OS.mac?
      args << "--without-x"
      # Fix flat_namespace usage
      inreplace "configure", "${wl}-flat_namespace ${wl}-undefined ${wl}suppress",
                "${wl}-undefined ${wl}dynamic_lookup"
    end

    system "./configure", *args
    system "make", "install"
  end

  test do
    (testpath/"test.c").write <<~EOS
      #include <gtk/gtkgl.h>

      int main(int argc, char *argv[]) {
        int version_check = GTKGLEXT_CHECK_VERSION(1, 2, 0);
        return 0;
      }
    EOS
    atk = Formula["atk"]
    cairo = Formula["cairo"]
    fontconfig = Formula["fontconfig"]
    freetype = Formula["freetype"]
    gdk_pixbuf = Formula["gdk-pixbuf"]
    gettext = Formula["gettext"]
    glib = Formula["glib"]
    gtkx = Formula["gtk+"]
    harfbuzz = Formula["harfbuzz"]
    libpng = Formula["libpng"]
    pango = Formula["pango"]
    pixman = Formula["pixman"]
    flags = %W[
      -I#{atk.opt_include}/atk-1.0
      -I#{cairo.opt_include}/cairo
      -I#{fontconfig.opt_include}
      -I#{freetype.opt_include}/freetype2
      -I#{gdk_pixbuf.opt_include}/gdk-pixbuf-2.0
      -I#{gettext.opt_include}
      -I#{glib.opt_include}/glib-2.0
      -I#{glib.opt_lib}/glib-2.0/include
      -I#{gtkx.opt_include}/gtk-2.0
      -I#{gtkx.opt_lib}/gtk-2.0/include
      -I#{harfbuzz.opt_include}/harfbuzz
      -I#{include}/gtkglext-1.0
      -I#{libpng.opt_include}/libpng16
      -I#{lib}/gtkglext-1.0/include
      -I#{pango.opt_include}/pango-1.0
      -I#{pixman.opt_include}/pixman-1
      -D_REENTRANT
      -L#{atk.opt_lib}
      -L#{cairo.opt_lib}
      -L#{gdk_pixbuf.opt_lib}
      -L#{gettext.opt_lib}
      -L#{glib.opt_lib}
      -L#{gtkx.opt_lib}
      -L#{lib}
      -L#{pango.opt_lib}
      -latk-1.0
      -lcairo
      -lgio-2.0
      -lglib-2.0
      -lgmodule-2.0
      -lgobject-2.0
      -lgdk_pixbuf-2.0
      -lpango-1.0
      -lpangocairo-1.0
    ]

    if OS.mac?
      flags += %w[
        -lgdk-quartz-2.0
        -lgtk-quartz-2.0
        -lgdkglext-quartz-1.0
        -lgtkglext-quartz-1.0
        -lintl
        -framework AppKit
        -framework OpenGL
      ]
    end

    system ENV.cc, "test.c", "-o", "test", *flags
    system "./test"
  end
end

__END__
--- pangox-compat/pangox.c.orig 2020-05-04 18:31:53.421197064 -0400
+++ pangox-compat/pangox.c      2020-05-04 18:32:41.251146923 -0400
@@ -277,11 +277,11 @@ pango_x_font_class_init (PangoXFontClass
   object_class->finalize = pango_x_font_finalize;
   object_class->dispose = pango_x_font_dispose;

   font_class->describe = pango_x_font_describe;
   font_class->get_coverage = pango_x_font_get_coverage;
-  font_class->find_shaper = pango_x_font_find_shaper;
+  /* font_class->find_shaper = pango_x_font_find_shaper; */
   font_class->get_glyph_extents = pango_x_font_get_glyph_extents;
   font_class->get_metrics = pango_x_font_get_metrics;
   font_class->get_font_map = pango_x_font_get_font_map;
 }
