From 0a3046286e69b171c319ff419c94cf62929246bf Mon Sep 17 00:00:00 2001
From: Robert Mader <robert.mader@posteo.de>
Date: Mon, 22 Jan 2018 22:02:32 +0100
Subject: [PATCH xserver 02/25] xwayland: Add wp_viewport wayland extension
 support
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This commit adds support for the wayland wp_viewport extension, note
nothing uses this yet.

This is a preparation patch for adding support for fake mode-changes through
xrandr for apps which want to change the resolution when going fullscreen.

[hdegoede@redhat.com: Split the code for the extension out into its own patch]

Reviewed-by: Olivier Fourdan <ofourdan@redhat.com>
Acked-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
(cherry picked from commit 47bba4625339592d08b375bcd8e51029c0000850)
---
 hw/xwayland/Makefile.am | 9 ++++++++-
 hw/xwayland/meson.build | 3 +++
 hw/xwayland/xwayland.c  | 3 +++
 hw/xwayland/xwayland.h  | 2 ++
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/hw/xwayland/Makefile.am b/hw/xwayland/Makefile.am
index bc1cb8506..49aae3d8b 100644
--- a/hw/xwayland/Makefile.am
+++ b/hw/xwayland/Makefile.am
@@ -71,7 +71,9 @@ Xwayland_built_sources +=					\
 	xdg-output-unstable-v1-protocol.c			\
 	xdg-output-unstable-v1-client-protocol.h		\
 	linux-dmabuf-unstable-v1-client-protocol.h		\
-	linux-dmabuf-unstable-v1-protocol.c
+	linux-dmabuf-unstable-v1-protocol.c			\
+	viewporter-client-protocol.h				\
+	viewporter-protocol.c
 
 if XWAYLAND_EGLSTREAM
 Xwayland_built_sources +=					\
@@ -120,6 +122,11 @@ linux-dmabuf-unstable-v1-protocol.c : $(WAYLAND_PROTOCOLS_DATADIR)/unstable/linu
 linux-dmabuf-unstable-v1-client-protocol.h : $(WAYLAND_PROTOCOLS_DATADIR)/unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml
 	$(AM_V_GEN)$(WAYLAND_SCANNER) client-header < $< > $@
 
+viewporter-protocol.c: $(WAYLAND_PROTOCOLS_DATADIR)/stable/viewporter/viewporter.xml
+	$(AM_V_GEN)$(WAYLAND_SCANNER) @SCANNER_ARG@ < $< > $@
+viewporter-client-protocol.h: $(WAYLAND_PROTOCOLS_DATADIR)/stable/viewporter/viewporter.xml
+	$(AM_V_GEN)$(WAYLAND_SCANNER) client-header < $< > $@
+
 wayland-eglstream-client-protocol.h : $(WAYLAND_EGLSTREAM_DATADIR)/wayland-eglstream.xml
 	$(AM_V_GEN)$(WAYLAND_SCANNER) client-header < $< > $@
 wayland-eglstream-controller-client-protocol.h : $(WAYLAND_EGLSTREAM_DATADIR)/wayland-eglstream-controller.xml
diff --git a/hw/xwayland/meson.build b/hw/xwayland/meson.build
index 36bf2133a..4a8d171bb 100644
--- a/hw/xwayland/meson.build
+++ b/hw/xwayland/meson.build
@@ -21,6 +21,7 @@ tablet_xml = join_paths(protodir, 'unstable', 'tablet', 'tablet-unstable-v2.xml'
 kbgrab_xml = join_paths(protodir, 'unstable', 'xwayland-keyboard-grab', 'xwayland-keyboard-grab-unstable-v1.xml')
 xdg_output_xml = join_paths(protodir, 'unstable', 'xdg-output', 'xdg-output-unstable-v1.xml')
 dmabuf_xml = join_paths(protodir, 'unstable', 'linux-dmabuf', 'linux-dmabuf-unstable-v1.xml')
+viewporter_xml = join_paths(protodir, 'stable', 'viewporter', 'viewporter.xml')
 
 client_header = generator(scanner,
     output : '@BASENAME@-client-protocol.h',
@@ -43,12 +44,14 @@ srcs += client_header.process(tablet_xml)
 srcs += client_header.process(kbgrab_xml)
 srcs += client_header.process(xdg_output_xml)
 srcs += client_header.process(dmabuf_xml)
+srcs += client_header.process(viewporter_xml)
 srcs += code.process(relative_xml)
 srcs += code.process(pointer_xml)
 srcs += code.process(tablet_xml)
 srcs += code.process(kbgrab_xml)
 srcs += code.process(xdg_output_xml)
 srcs += code.process(dmabuf_xml)
+srcs += code.process(viewporter_xml)
 
 xwayland_glamor = []
 eglstream_srcs = []
diff --git a/hw/xwayland/xwayland.c b/hw/xwayland/xwayland.c
index b353167c3..a70c1002f 100644
--- a/hw/xwayland/xwayland.c
+++ b/hw/xwayland/xwayland.c
@@ -912,6 +912,9 @@ registry_global(void *data, struct wl_registry *registry, uint32_t id,
             wl_registry_bind(registry, id, &zxdg_output_manager_v1_interface, 1);
         xwl_screen_init_xdg_output(xwl_screen);
     }
+    else if (strcmp(interface, "wp_viewporter") == 0) {
+        xwl_screen->viewporter = wl_registry_bind(registry, id, &wp_viewporter_interface, 1);
+    }
 #ifdef XWL_HAS_GLAMOR
     else if (xwl_screen->glamor) {
         xwl_glamor_init_wl_registry(xwl_screen, registry, id, interface,
diff --git a/hw/xwayland/xwayland.h b/hw/xwayland/xwayland.h
index b9495b313..91ae21eeb 100644
--- a/hw/xwayland/xwayland.h
+++ b/hw/xwayland/xwayland.h
@@ -48,6 +48,7 @@
 #include "xwayland-keyboard-grab-unstable-v1-client-protocol.h"
 #include "xdg-output-unstable-v1-client-protocol.h"
 #include "linux-dmabuf-unstable-v1-client-protocol.h"
+#include "viewporter-client-protocol.h"
 
 struct xwl_format {
     uint32_t format;
@@ -151,6 +152,7 @@ struct xwl_screen {
     struct zwp_pointer_constraints_v1 *pointer_constraints;
     struct zwp_xwayland_keyboard_grab_manager_v1 *wp_grab;
     struct zxdg_output_manager_v1 *xdg_output_manager;
+    struct wp_viewporter *viewporter;
     uint32_t serial;
 
 #define XWL_FORMAT_ARGB8888 (1 << 0)
-- 
2.28.0