From 8d3731162c2b3aae518f8d8b2d7190c4deec9911 Mon Sep 17 00:00:00 2001
From: Francesco Giudici <fgiudici@redhat.com>
Date: Thu, 27 Feb 2020 11:55:15 +0100
Subject: [PATCH 5/9] meson: add wayland protocols

Generate wayland protocols: these will be used later for locking the
mouse pointer and getting relative mouse movements when using the mouse
in server mode in Wayland.
The meson build steps have been freely taken and adapted from Weston
source code:
https://gitlab.freedesktop.org/wayland/weston/-/blob/master/protocol/meson.build

Signed-off-by: Francesco Giudici <fgiudici@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
(cherry picked from commit d70044ab49728524c68796dd371d2bf7d94d27e5)
---
 meson.build       | 20 +++++++++++++++
 meson_options.txt |  4 +++
 src/meson.build   | 62 +++++++++++++++++++++++++++++++++++++++++++++--
 3 files changed, 84 insertions(+), 2 deletions(-)

diff --git a/meson.build b/meson.build
index c442a0d..7426ea5 100644
--- a/meson.build
+++ b/meson.build
@@ -31,6 +31,7 @@ spice_gtk_config_data = configuration_data()
 spice_gtk_include = [include_directories('.')]
 spice_glib_deps = []
 spice_gtk_deps = []
+spice_wayland_deps = []
 spice_acl_deps = []
 
 #
@@ -152,6 +153,25 @@ if d.found()
   spice_gtk_has_gtk = true
 endif
 
+# wayland protocols
+spice_gtk_has_wayland_protocols = false
+# Check if gtk is enabled and supports the wayland backend
+if host_machine.system() != 'windows' and spice_gtk_has_gtk and compiler.has_header('gtk-3.0/gdk/gdkwayland.h')
+  d = dependency('wayland-protocols', version: '>= 1.17', required: get_option('wayland-protocols'))
+  if d.found()
+    spice_gtk_config_data.set('HAVE_WAYLAND_PROTOCOLS', '1')
+    dir_wp_base = d.get_pkgconfig_variable('pkgdatadir')
+    dep_scanner = dependency('wayland-scanner', native: true)
+    prog_scanner = find_program(dep_scanner.get_pkgconfig_variable('wayland_scanner'))
+
+    wayland_libs_version_required = '1.17.0'
+    spice_wayland_deps += dependency('wayland-server', version : '>= @0@'.format(wayland_libs_version_required))
+    spice_wayland_deps += dependency('wayland-cursor', version : '>= @0@'.format(wayland_libs_version_required))
+    spice_wayland_deps += dependency('wayland-client', version : '>= @0@'.format(wayland_libs_version_required))
+    spice_gtk_has_wayland_protocols = true
+  endif
+endif
+
 # webdav
 spice_gtk_has_phodav = false
 d = dependency('libphodav-2.0', required: get_option('webdav'))
diff --git a/meson_options.txt b/meson_options.txt
index 9804217..60b87ca 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -2,6 +2,10 @@ option('gtk',
     type : 'feature',
     description: 'Enable gtk+')
 
+option('wayland-protocols',
+    type : 'feature',
+    description: 'Enable wayland protocols')
+
 option('webdav',
     type : 'feature',
     description: 'Enable webdav support')
diff --git a/src/meson.build b/src/meson.build
index 654dab5..bdd2239 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -318,6 +318,64 @@ if spice_gtk_has_gtk
                                               command : cmd)
   endforeach
 
+  #
+  # Wayland protocols
+  #
+  if spice_gtk_has_wayland_protocols
+
+    generated_protocols = [
+      [ 'pointer-constraints', 'v1' ],
+      [ 'relative-pointer', 'v1' ],
+     #[ 'input-method', 'v1' ],
+     #[ 'input-timestamps', 'v1' ],
+     #[ 'fullscreen-shell', 'v1' ],
+     #[ 'linux-dmabuf', 'v1' ],
+     #[ 'linux-explicit-synchronization', 'v1' ],
+     #[ 'presentation-time', 'stable' ],
+     #[ 'tablet', 'v2' ],
+     #[ 'text-input', 'v1' ],
+     #[ 'viewporter', 'stable' ],
+     #[ 'xdg-output', 'v1' ],
+     #[ 'xdg-shell', 'v6' ],
+     #[ 'xdg-shell', 'stable' ],
+    ]
+
+    foreach proto: generated_protocols
+      proto_name = proto[0]
+      if proto[1] == 'internal'
+        base_file = proto_name
+        xml_path = '@0@.xml'.format(proto_name)
+      elif proto[1] == 'stable'
+        base_file = proto_name
+        xml_path = '@0@/stable/@1@/@1@.xml'.format(dir_wp_base, base_file)
+      else
+        base_file = '@0@-unstable-@1@'.format(proto_name, proto[1])
+        xml_path = '@0@/unstable/@1@/@2@.xml'.format(dir_wp_base, proto_name, base_file)
+      endif
+
+      foreach output_type: [ 'client-header', 'server-header', 'private-code' ]
+        if output_type == 'client-header'
+          output_file = '@0@-client-protocol.h'.format(base_file)
+        elif output_type == 'server-header'
+          output_file = '@0@-server-protocol.h'.format(base_file)
+        else
+          output_file = '@0@-protocol.c'.format(base_file)
+          if dep_scanner.version().version_compare('< 1.14.91')
+              output_type = 'code'
+          endif
+        endif
+
+        spice_client_gtk_sources += custom_target(
+          '@0@ @1@'.format(base_file, output_type),
+          command: [ prog_scanner, output_type, '@INPUT@', '@OUTPUT@' ],
+          input: xml_path,
+          output: output_file,
+        )
+        message('@0@ @1@: @2@ -> @3@'.format(prog_scanner, output_type, xml_path, output_file))
+      endforeach
+    endforeach
+  endif
+
   #
   # libspice-client-gtk.so
   #
@@ -343,11 +401,11 @@ if spice_gtk_has_gtk
                                  install : true,
                                  link_args : [spice_gtk_version_script],
                                  link_depends : spice_client_gtk_syms,
-                                 dependencies : [spice_client_glib_dep, spice_gtk_deps])
+                                 dependencies : [spice_client_glib_dep, spice_gtk_deps, spice_wayland_deps])
 
   spice_client_gtk_dep = declare_dependency(sources : spice_widget_enums[1],
                                             link_with : spice_client_gtk_lib,
-                                            dependencies : [spice_client_glib_dep, spice_gtk_deps])
+                                            dependencies : [spice_client_glib_dep, spice_gtk_deps, spice_wayland_deps])
 
   if spice_gtk_has_introspection
     #
-- 
2.26.2