[mutter] wayland: Move out window state application into the roles

[Jonas Ådahl <jadahl src gnome org>]

commit 9028e30b39741f4c611ce92a3864ea5f3b8541ec
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Jan 14 17:49:57 2016 +0800

    wayland: Move out window state application into the roles
    
    A large part of meta_wayland_surface_apply_window_state() was only
    relevant for xdg_surface. Make this more obvious by splitting it up,
    moving the relevant parts to the relevant roles.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763431

 src/wayland/meta-wayland-surface.c   |   67 ++++++--------------------------
 src/wayland/meta-wayland-surface.h   |    5 ++
 src/wayland/meta-wayland-wl-shell.c  |   14 ++++++-
 src/wayland/meta-wayland-xdg-shell.c |   71 +++++++++++++++++++++++++++++++---
 4 files changed, 94 insertions(+), 63 deletions(-)
---
diff --git a/src/wayland/meta-wayland-surface.c b/src/wayland/meta-wayland-surface.c
index 3d4f0a9..1da9f3c 100644
--- a/src/wayland/meta-wayland-surface.c
+++ b/src/wayland/meta-wayland-surface.c
@@ -262,11 +262,11 @@ dnd_surface_commit (MetaWaylandSurfaceRole  *surface_role,
   meta_wayland_surface_queue_pending_state_frame_callbacks (surface, pending);
 }
 
-static void
-calculate_surface_window_geometry (MetaWaylandSurface *surface,
-                                   MetaRectangle      *total_geometry,
-                                   float               parent_x,
-                                   float               parent_y)
+void
+meta_wayland_surface_calculate_window_geometry (MetaWaylandSurface *surface,
+                                                MetaRectangle      *total_geometry,
+                                                float               parent_x,
+                                                float               parent_y)
 {
   MetaSurfaceActorWayland *surface_actor =
     META_SURFACE_ACTOR_WAYLAND (surface->surface_actor);
@@ -294,9 +294,10 @@ calculate_surface_window_geometry (MetaWaylandSurface *surface,
   for (l = surface->subsurfaces; l != NULL; l = l->next)
     {
       MetaWaylandSurface *subsurface = l->data;
-      calculate_surface_window_geometry (subsurface, total_geometry,
-                                         subsurface_rect.x,
-                                         subsurface_rect.y);
+      meta_wayland_surface_calculate_window_geometry (subsurface,
+                                                      total_geometry,
+                                                      subsurface_rect.x,
+                                                      subsurface_rect.y);
     }
 }
 
@@ -362,54 +363,10 @@ meta_wayland_surface_apply_window_state (MetaWaylandSurface      *surface,
 {
   MetaWindow *window = surface->window;
   MetaWaylandBuffer *buffer = surface->buffer_ref.buffer;
+  CoglTexture *texture = buffer->texture;
 
-  /* Update the state of the MetaWindow if we still have one. We might not if
-   * the window was unmanaged (for example popup destroyed, NULL buffer attached to
-   * wl_shell_surface wl_surface, xdg_surface object was destroyed, etc).
-   */
-  if (window && window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND)
-    {
-      MetaRectangle geom = { 0 };
-
-      CoglTexture *texture = buffer->texture;
-      /* Update the buffer rect immediately. */
-      window->buffer_rect.width = cogl_texture_get_width (texture);
-      window->buffer_rect.height = cogl_texture_get_height (texture);
-
-      if (pending->has_new_geometry)
-        {
-          /* If we have new geometry, use it. */
-          geom = pending->new_geometry;
-          surface->has_set_geometry = TRUE;
-        }
-      else if (!surface->has_set_geometry)
-        {
-          /* If the surface has never set any geometry, calculate
-           * a default one unioning the surface and all subsurfaces together. */
-          calculate_surface_window_geometry (surface, &geom, 0, 0);
-        }
-      else
-        {
-          /* Otherwise, keep the geometry the same. */
-
-          /* XXX: We don't store the geometry in any consistent place
-           * right now, so we can't re-fetch it. We should change
-           * meta_window_wayland_move_resize. */
-
-          /* XXX: This is the common case. Recognize it to prevent
-           * a warning. */
-          if (pending->dx == 0 && pending->dy == 0)
-            return;
-
-          g_warning ("XXX: Attach-initiated move without a new geometry. This is unimplemented right now.");
-          return;
-        }
-
-      meta_window_wayland_move_resize (window,
-                                       &surface->acked_configure_serial,
-                                       geom, pending->dx, pending->dy);
-      surface->acked_configure_serial.set = FALSE;
-    }
+  window->buffer_rect.width = cogl_texture_get_width (texture);
+  window->buffer_rect.height = cogl_texture_get_height (texture);
 }
 
 static void
diff --git a/src/wayland/meta-wayland-surface.h b/src/wayland/meta-wayland-surface.h
index 85d3371..9ac4659 100644
--- a/src/wayland/meta-wayland-surface.h
+++ b/src/wayland/meta-wayland-surface.h
@@ -346,6 +346,11 @@ cairo_region_t *    meta_wayland_surface_calculate_input_region (MetaWaylandSurf
 void                meta_wayland_surface_apply_window_state (MetaWaylandSurface      *surface,
                                                              MetaWaylandPendingState *pending);
 
+void                meta_wayland_surface_calculate_window_geometry (MetaWaylandSurface *surface,
+                                                                    MetaRectangle      *total_geometry,
+                                                                    float               parent_x,
+                                                                    float               parent_y);
+
 void                meta_wayland_surface_destroy_window (MetaWaylandSurface *surface);
 
 gboolean            meta_wayland_surface_begin_grab_op (MetaWaylandSurface *surface,
diff --git a/src/wayland/meta-wayland-wl-shell.c b/src/wayland/meta-wayland-wl-shell.c
index 135e6cc..2a28f48 100644
--- a/src/wayland/meta-wayland-wl-shell.c
+++ b/src/wayland/meta-wayland-wl-shell.c
@@ -487,6 +487,7 @@ wl_shell_surface_role_commit (MetaWaylandSurfaceRole  *surface_role,
   MetaWaylandSurface *surface =
     meta_wayland_surface_role_get_surface (surface_role);
   MetaWindow *window = surface->window;
+  MetaRectangle geom = { 0 };
 
   surface_role_class =
     META_WAYLAND_SURFACE_ROLE_CLASS (meta_wayland_wl_shell_surface_parent_class);
@@ -505,8 +506,17 @@ wl_shell_surface_role_commit (MetaWaylandSurfaceRole  *surface_role,
       return;
     }
 
-  if (pending->newly_attached)
-    meta_wayland_surface_apply_window_state (surface, pending);
+  if (!window)
+    return;
+
+  if (!pending->newly_attached)
+    return;
+
+  meta_wayland_surface_apply_window_state (surface, pending);
+  meta_wayland_surface_calculate_window_geometry (surface, &geom, 0, 0);
+  meta_window_wayland_move_resize (window,
+                                   NULL,
+                                   geom, pending->dx, pending->dy);
 }
 
 static MetaWaylandSurface *
diff --git a/src/wayland/meta-wayland-xdg-shell.c b/src/wayland/meta-wayland-xdg-shell.c
index 833d934..30520ea 100644
--- a/src/wayland/meta-wayland-xdg-shell.c
+++ b/src/wayland/meta-wayland-xdg-shell.c
@@ -38,6 +38,9 @@
 struct _MetaWaylandXdgSurface
 {
   MetaWaylandSurfaceRoleShellSurface parent;
+
+  MetaWaylandSerial acked_configure_serial;
+  gboolean has_set_geometry;
 };
 
 G_DEFINE_TYPE (MetaWaylandXdgSurface,
@@ -219,9 +222,10 @@ xdg_surface_ack_configure (struct wl_client   *client,
                            uint32_t            serial)
 {
   MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
+  MetaWaylandXdgSurface *xdg_surface = META_WAYLAND_XDG_SURFACE (surface->role);
 
-  surface->acked_configure_serial.set = TRUE;
-  surface->acked_configure_serial.value = serial;
+  xdg_surface->acked_configure_serial.set = TRUE;
+  xdg_surface->acked_configure_serial.value = serial;
 }
 
 static void
@@ -567,9 +571,12 @@ static void
 xdg_surface_role_commit (MetaWaylandSurfaceRole  *surface_role,
                          MetaWaylandPendingState *pending)
 {
+  MetaWaylandXdgSurface *xdg_surface = META_WAYLAND_XDG_SURFACE (surface_role);
   MetaWaylandSurfaceRoleClass *surface_role_class;
   MetaWaylandSurface *surface =
     meta_wayland_surface_role_get_surface (surface_role);
+  MetaWindow *window = surface->window;
+  MetaRectangle geom = { 0 };
 
   surface_role_class =
     META_WAYLAND_SURFACE_ROLE_CLASS (meta_wayland_xdg_surface_parent_class);
@@ -584,8 +591,48 @@ xdg_surface_role_commit (MetaWaylandSurfaceRole  *surface_role,
       return;
     }
 
-  if (pending->newly_attached)
-    meta_wayland_surface_apply_window_state (surface, pending);
+  if (!pending->newly_attached)
+    return;
+
+  /* If the window disappeared the surface is not coming back. */
+  if (!window)
+    return;
+
+  meta_wayland_surface_apply_window_state (surface, pending);
+
+  if (pending->has_new_geometry)
+    {
+      /* If we have new geometry, use it. */
+      geom = pending->new_geometry;
+      xdg_surface->has_set_geometry = TRUE;
+    }
+  else if (!xdg_surface->has_set_geometry)
+    {
+      /* If the surface has never set any geometry, calculate
+       * a default one unioning the surface and all subsurfaces together. */
+      meta_wayland_surface_calculate_window_geometry (surface, &geom, 0, 0);
+    }
+  else
+    {
+      /* Otherwise, keep the geometry the same. */
+
+      /* XXX: We don't store the geometry in any consistent place
+       * right now, so we can't re-fetch it. We should change
+       * meta_window_wayland_move_resize. */
+
+      /* XXX: This is the common case. Recognize it to prevent
+       * a warning. */
+      if (pending->dx == 0 && pending->dy == 0)
+        return;
+
+      g_warning ("XXX: Attach-initiated move without a new geometry. This is unimplemented right now.");
+      return;
+    }
+
+  meta_window_wayland_move_resize (window,
+                                   &xdg_surface->acked_configure_serial,
+                                   geom, pending->dx, pending->dy);
+  xdg_surface->acked_configure_serial.set = FALSE;
 }
 
 static MetaWaylandSurface *
@@ -688,6 +735,8 @@ xdg_popup_role_commit (MetaWaylandSurfaceRole  *surface_role,
   MetaWaylandSurfaceRoleClass *surface_role_class;
   MetaWaylandSurface *surface =
     meta_wayland_surface_role_get_surface (surface_role);
+  MetaWindow *window = surface->window;
+  MetaRectangle geom = { 0 };
 
   surface_role_class =
     META_WAYLAND_SURFACE_ROLE_CLASS (meta_wayland_xdg_popup_parent_class);
@@ -702,8 +751,18 @@ xdg_popup_role_commit (MetaWaylandSurfaceRole  *surface_role,
       return;
     }
 
-  if (pending->newly_attached)
-    meta_wayland_surface_apply_window_state (surface, pending);
+  if (!pending->newly_attached)
+    return;
+
+  /* If the window disappeared the surface is not coming back. */
+  if (!window)
+    return;
+
+  meta_wayland_surface_apply_window_state (surface, pending);
+  meta_wayland_surface_calculate_window_geometry (surface, &geom, 0, 0);
+  meta_window_wayland_move_resize (window,
+                                   NULL,
+                                   geom, pending->dx, pending->dy);
 }
 
 static MetaWaylandSurface *