Use wayland-protocols

Summary:
So far we've been copying protocol specifications from wayland-protocols
repo to kwayland repo. The main issue with copying is that we have to
keep xml files in sync manually. A better approach would be to use xml
specs straight from wayland-protocols package.

Test Plan: Compiles.

Reviewers: #kwin, #frameworks, romangg, davidedmundson

Reviewed By: #kwin, romangg, davidedmundson

Subscribers: davidedmundson, apol, romangg, asturmlechner, kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D22216

src/wayland/CMakeLists.txt

@@ -125,7 +125,7 @@ ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/relative-pointer-unstable-v1.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/relative-pointer/relative-pointer-unstable-v1.xml
     BASENAME relativepointer-unstable-v1
 )
 
@@ -150,27 +150,27 @@ ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/xdg-shell-unstable-v6.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/xdg-shell/xdg-shell-unstable-v6.xml
     BASENAME xdg-shell-v6
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/pointer-gestures-unstable-v1.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/pointer-gestures/pointer-gestures-unstable-v1.xml
     BASENAME pointer-gestures-unstable-v1
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/pointer-constraints-unstable-v1.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/pointer-constraints/pointer-constraints-unstable-v1.xml
     BASENAME pointer-constraints-unstable-v1
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/xdg-foreign-unstable-v2.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/xdg-foreign/xdg-foreign-unstable-v2.xml
     BASENAME xdg-foreign-unstable-v2
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/idle-inhibit-unstable-v1.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/idle-inhibit/idle-inhibit-unstable-v1.xml
     BASENAME idle-inhibit-unstable-v1
 )
 
@@ -190,17 +190,17 @@ ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/xdg-output-unstable-v1.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/xdg-output/xdg-output-unstable-v1.xml
     BASENAME xdg-output
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/xdg-shell.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/stable/xdg-shell/xdg-shell.xml
     BASENAME xdg-shell
 )
 
 ecm_add_wayland_server_protocol(SERVER_LIB_SRCS
-    PROTOCOL ${KWayland_SOURCE_DIR}/src/client/protocols/xdg-decoration-unstable-v1.xml
+    PROTOCOL ${WaylandProtocols_DATADIR}/unstable/xdg-decoration/xdg-decoration-unstable-v1.xml
     BASENAME xdg-decoration
 )
 

src/wayland/cmake/Modules/FindWaylandProtocols.cmake

@@ -0,0 +1,60 @@
+#.rst:
+# FindWaylandProtocols
+# -------
+#
+# Try to find wayland-protocols on a Unix system.
+#
+# This will define the following variables:
+#
+# ``WaylandProtocols_FOUND``
+#     True if (the requested version of) wayland-protocols is available
+# ``WaylandProtocols_VERSION``
+#     The version of wayland-protocols
+# ``WaylandProtocols_DATADIR``
+#     The wayland protocols data directory
+
+#=============================================================================
+# Copyright 2019 Vlad Zagorodniy <vladzzag@gmail.com>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#=============================================================================
+
+find_package(PkgConfig)
+pkg_check_modules(PKG_wayland_protocols QUIET wayland-protocols)
+
+set(WaylandProtocols_VERSION ${PKG_wayland_protocols_VERSION})
+pkg_get_variable(WaylandProtocols_DATADIR wayland-protocols pkgdatadir)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(WaylandProtocols
+    FOUND_VAR WaylandProtocols_FOUND
+    REQUIRED_VARS WaylandProtocols_DATADIR
+    VERSION_VAR WaylandProtocols_VERSION
+)
+
+include(FeatureSummary)
+set_package_properties(WaylandProtocols PROPERTIES
+    DESCRIPTION "Specifications of extended Wayland protocols"
+    URL "https://wayland.freedesktop.org/"
+)