wayland: Implement wl_pointer.axis_source/axis_stop/axis_frame emission

As per the spec. wl_pointer.axis_source determines the current source of
scroll events, wl_pointer.axis_stop determines when there's no further
scroll events on any axis (Which Clutter sends as dx/dy=0 events).
wl_pointer.axis_frame marks the end of a series of axis_* events.

v2: Updated to v4 of the protocol spec by
    Peter Hutterer <peter.hutterer@who-t.net>
v3: Update to use Clutter API

NEWS

@@ -1,17 +1,3 @@
-3.19.1
-======
-* wayland: Allow to trigger popups through keyboard/touch [Carlos; #756296]
-* Fix modifiers-only input source switching on Ubuntu [Alberts; #756543]
-* Misc. bug fixes [Jonas, Rui, Giovanni, Florian; #756675, #756660, #746420,
-  #756548, #756796, #757101, #757148]
-
-Contributors:
-  Jonas Ådahl, Giovanni Campagna, Carlos Garnacho, Rui Matos,
-  Alberts Muktupāvels, Florian Müllner
-
-Translations:
-  Daniel Șerbănescu [ro]
-
 3.18.1
 ======
 * Misc. crash fixes [Jonas, Rui, Carlos, Owen, Florian; #755096, #754979,

configure.ac

@@ -1,7 +1,7 @@
 AC_PREREQ(2.62)
 
 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [19])
+m4_define([mutter_minor_version], [18])
 m4_define([mutter_micro_version], [1])
 
 m4_define([mutter_version],
@@ -58,7 +58,7 @@ CANBERRA_GTK_VERSION=0.26
 CLUTTER_PACKAGE=clutter-1.0
 
 MUTTER_PC_MODULES="
-   gtk+-3.0 >= 3.19.1
+   gtk+-3.0 >= 3.9.11
    gio-unix-2.0 >= 2.35.1
    pango >= 1.2.0
    cairo >= 1.10.0

src/backends/x11/meta-backend-x11.c

@@ -82,7 +82,6 @@ struct _MetaBackendX11Private
   gchar *keymap_layouts;
   gchar *keymap_variants;
   gchar *keymap_options;
-  int locked_group;
 };
 typedef struct _MetaBackendX11Private MetaBackendX11Private;
 
@@ -298,23 +297,15 @@ handle_host_xevent (MetaBackend *backend,
 
   if (event->type == priv->xkb_event_base)
     {
-      XkbEvent *xkb_ev = (XkbEvent *) event;
+      XkbAnyEvent *xkb_ev = (XkbAnyEvent *) event;
 
-      if (xkb_ev->any.device == META_VIRTUAL_CORE_KEYBOARD_ID)
+      if (xkb_ev->device == META_VIRTUAL_CORE_KEYBOARD_ID)
         {
-          switch (xkb_ev->any.xkb_type)
+          switch (xkb_ev->xkb_type)
             {
             case XkbNewKeyboardNotify:
             case XkbMapNotify:
               keymap_changed (backend);
-              break;
-            case XkbStateNotify:
-              if (xkb_ev->state.changed & XkbGroupLockMask)
-                {
-                  if (priv->locked_group != xkb_ev->state.locked_group)
-                    XkbLockGroup (priv->xdisplay, XkbUseCoreKbd, priv->locked_group);
-                }
-              break;
             default:
               break;
             }
@@ -785,7 +776,6 @@ meta_backend_x11_lock_layout_group (MetaBackend *backend,
   MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
   MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
 
-  priv->locked_group = idx;
   XkbLockGroup (priv->xdisplay, XkbUseCoreKbd, idx);
 }
 

src/backends/x11/meta-monitor-manager-xrandr.c

@@ -808,15 +808,6 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
 	{
           GBytes *edid;
 
-          /* Get this first so that if there are no valid modes we
-             can immediately skip to the next output without having
-             to unwind all the assignments below. */
-          output_get_modes (manager, meta_output, output);
-          if (meta_output->n_modes == 0)
-            continue;
-
-          meta_output->preferred_mode = meta_output->modes[0];
-
 	  meta_output->winsys_id = resources->outputs[i];
 	  meta_output->name = g_strdup (output->name);
 
@@ -833,6 +824,8 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
           meta_output->connector_type = output_get_connector_type (manager_xrandr, meta_output);
 
 	  output_get_tile_info (manager_xrandr, meta_output);
+	  output_get_modes (manager, meta_output, output);
+	  meta_output->preferred_mode = meta_output->modes[0];
 
 	  meta_output->n_possible_crtcs = output->ncrtc;
 	  meta_output->possible_crtcs = g_new0 (MetaCRTC *, meta_output->n_possible_crtcs);

src/core/window.c

@@ -3534,7 +3534,10 @@ meta_window_update_for_monitors_changed (MetaWindow *window)
 {
   const MetaMonitorInfo *old, *new;
 
-  if (window->override_redirect || window->type == META_WINDOW_DESKTOP)
+  if (window->type == META_WINDOW_DESKTOP)
+    return;
+
+  if (window->override_redirect)
     {
       meta_window_update_monitor (window, FALSE);
       return;

src/ui/theme.c

@@ -929,7 +929,6 @@ static GtkStyleContext *
 create_style_context (GType            widget_type,
                       GtkStyleContext *parent_style,
                       GtkCssProvider  *provider,
-                      const char      *object_name,
                       const char      *first_class,
                       ...)
 {
@@ -949,9 +948,6 @@ create_style_context (GType            widget_type,
 
   gtk_widget_path_append_type (path, widget_type);
 
-  if (object_name)
-    gtk_widget_path_iter_set_object_name (path, -1, object_name);
-
   va_start (ap, first_class);
   for (name = first_class; name; name = va_arg (ap, const char *))
     gtk_widget_path_iter_add_class (path, -1, name);
@@ -991,7 +987,6 @@ meta_theme_create_style_info (GdkScreen   *screen,
     create_style_context (META_TYPE_FRAMES,
                           NULL,
                           provider,
-                          "decoration",
                           GTK_STYLE_CLASS_BACKGROUND,
                           "window-frame",
                           "ssd",
@@ -1000,7 +995,6 @@ meta_theme_create_style_info (GdkScreen   *screen,
     create_style_context (GTK_TYPE_HEADER_BAR,
                           style_info->styles[META_STYLE_ELEMENT_FRAME],
                           provider,
-                          NULL,
                           GTK_STYLE_CLASS_TITLEBAR,
                           GTK_STYLE_CLASS_HORIZONTAL,
                           "default-decoration",
@@ -1010,14 +1004,12 @@ meta_theme_create_style_info (GdkScreen   *screen,
     create_style_context (GTK_TYPE_LABEL,
                           style_info->styles[META_STYLE_ELEMENT_TITLEBAR],
                           provider,
-                          NULL,
                           GTK_STYLE_CLASS_TITLE,
                           NULL);
   style_info->styles[META_STYLE_ELEMENT_BUTTON] =
     create_style_context (GTK_TYPE_BUTTON,
                           style_info->styles[META_STYLE_ELEMENT_TITLEBAR],
                           provider,
-                          NULL,
                           GTK_STYLE_CLASS_BUTTON,
                           "titlebutton",
                           NULL);
@@ -1025,7 +1017,6 @@ meta_theme_create_style_info (GdkScreen   *screen,
     create_style_context (GTK_TYPE_IMAGE,
                           style_info->styles[META_STYLE_ELEMENT_BUTTON],
                           provider,
-                          NULL,
                           NULL);
   return style_info;
 }

src/wayland/meta-wayland-pointer.c

@@ -494,10 +494,27 @@ handle_scroll_event (MetaWaylandPointer *pointer,
 {
   struct wl_resource *resource;
   wl_fixed_t x_value = 0, y_value = 0;
+  enum wl_pointer_axis_source source = -1;
 
   if (clutter_event_is_pointer_emulated (event))
     return;
 
+  switch (event->scroll.scroll_source)
+    {
+    case CLUTTER_SCROLL_SOURCE_WHEEL:
+      source = WL_POINTER_AXIS_SOURCE_WHEEL;
+      break;
+    case CLUTTER_SCROLL_SOURCE_FINGER:
+      source = WL_POINTER_AXIS_SOURCE_FINGER;
+      break;
+    case CLUTTER_SCROLL_SOURCE_CONTINUOUS:
+      source = WL_POINTER_AXIS_SOURCE_CONTINUOUS;
+      break;
+    default:
+      source = WL_POINTER_AXIS_SOURCE_WHEEL;
+      break;
+    }
+
   switch (clutter_event_get_scroll_direction (event))
     {
     case CLUTTER_SCROLL_UP:
@@ -537,12 +554,31 @@ handle_scroll_event (MetaWaylandPointer *pointer,
     {
       wl_resource_for_each (resource, &pointer->focus_client->pointer_resources)
         {
+          if (wl_resource_get_version (resource) >= WL_POINTER_AXIS_SOURCE_SINCE_VERSION)
+            wl_pointer_send_axis_source (resource, source);
+
           if (x_value)
             wl_pointer_send_axis (resource, clutter_event_get_time (event),
                                   WL_POINTER_AXIS_HORIZONTAL_SCROLL, x_value);
+
+          if ((event->scroll.finish_flags & CLUTTER_SCROLL_FINISHED_HORIZONTAL) &&
+              wl_resource_get_version (resource) >= WL_POINTER_AXIS_STOP_SINCE_VERSION)
+            wl_pointer_send_axis_stop (resource,
+                                       clutter_event_get_time (event),
+                                       WL_POINTER_AXIS_HORIZONTAL_SCROLL);
+
           if (y_value)
             wl_pointer_send_axis (resource, clutter_event_get_time (event),
                                   WL_POINTER_AXIS_VERTICAL_SCROLL, y_value);
+
+          if ((event->scroll.finish_flags & CLUTTER_SCROLL_FINISHED_VERTICAL) &&
+              wl_resource_get_version (resource) >= WL_POINTER_AXIS_STOP_SINCE_VERSION)
+            wl_pointer_send_axis_stop (resource,
+                                       clutter_event_get_time (event),
+                                       WL_POINTER_AXIS_VERTICAL_SCROLL);
+
+          if (wl_resource_get_version (resource) >= WL_POINTER_AXIS_SOURCE_SINCE_VERSION)
+            wl_pointer_send_axis_frame (resource);
         }
     }
 }

src/wayland/meta-wayland-surface.c

@@ -933,26 +933,22 @@ set_surface_is_on_output (MetaWaylandSurface *surface,
                           MetaWaylandOutput *wayland_output,
                           gboolean is_on_output)
 {
-  gpointer orig_id;
-  gboolean was_on_output = g_hash_table_lookup_extended (surface->outputs_to_destroy_notify_id,
-                                                         wayland_output,
-                                                         NULL, &orig_id);
+  gboolean was_on_output = g_hash_table_contains (surface->outputs,
+                                                  wayland_output);
 
   if (!was_on_output && is_on_output)
     {
-      gulong id;
-
-      id = g_signal_connect (wayland_output, "output-destroyed",
-                             G_CALLBACK (surface_handle_output_destroy),
-                             surface);
-      g_hash_table_insert (surface->outputs_to_destroy_notify_id, wayland_output,
-                           GSIZE_TO_POINTER ((gsize)id));
+      g_signal_connect (wayland_output, "output-destroyed",
+                        G_CALLBACK (surface_handle_output_destroy),
+                        surface);
+      g_hash_table_add (surface->outputs, wayland_output);
       surface_entered_output (surface, wayland_output);
     }
   else if (was_on_output && !is_on_output)
     {
-      g_hash_table_remove (surface->outputs_to_destroy_notify_id, wayland_output);
-      g_signal_handler_disconnect (wayland_output, (gulong) GPOINTER_TO_SIZE (orig_id));
+      g_hash_table_remove (surface->outputs, wayland_output);
+      g_signal_handlers_disconnect_by_func  (
+        wayland_output, (gpointer)surface_handle_output_destroy, surface);
       surface_left_output (surface, wayland_output);
     }
 }
@@ -990,12 +986,6 @@ update_surface_output_state (gpointer key, gpointer value, gpointer user_data)
   set_surface_is_on_output (surface, wayland_output, is_on_output);
 }
 
-static void
-surface_output_disconnect_signal (gpointer key, gpointer value, gpointer user_data)
-{
-  g_signal_handler_disconnect (key, (gulong) GPOINTER_TO_SIZE (value));
-}
-
 void
 meta_wayland_surface_update_outputs (MetaWaylandSurface *surface)
 {
@@ -1046,8 +1036,7 @@ wl_surface_destructor (struct wl_resource *resource)
 
   meta_wayland_compositor_destroy_frame_callbacks (compositor, surface);
 
-  g_hash_table_foreach (surface->outputs_to_destroy_notify_id, surface_output_disconnect_signal, surface);
-  g_hash_table_unref (surface->outputs_to_destroy_notify_id);
+  g_hash_table_unref (surface->outputs);
 
   wl_list_for_each_safe (cb, next, &surface->pending_frame_callback_list, link)
     wl_resource_destroy (cb->resource);
@@ -1092,7 +1081,7 @@ meta_wayland_surface_create (MetaWaylandCompositor *compositor,
 
   sync_drag_dest_funcs (surface);
 
-  surface->outputs_to_destroy_notify_id = g_hash_table_new (NULL, NULL);
+  surface->outputs = g_hash_table_new (NULL, NULL);
 
   pending_state_init (&surface->pending);
   return surface;

src/wayland/meta-wayland-surface.h

@@ -147,7 +147,7 @@ struct _MetaWaylandSurface
   int scale;
   int32_t offset_x, offset_y;
   GList *subsurfaces;
-  GHashTable *outputs_to_destroy_notify_id;
+  GHashTable *outputs;
 
   /* List of pending frame callbacks that needs to stay queued longer than one
    * commit sequence, such as when it has not yet been assigned a role.

src/wayland/meta-wayland-versions.h

@@ -39,7 +39,7 @@
 #define META_WL_DATA_DEVICE_MANAGER_VERSION 2
 #define META_XDG_SHELL_VERSION              1
 #define META_WL_SHELL_VERSION               1
-#define META_WL_SEAT_VERSION                4
+#define META_WL_SEAT_VERSION                5
 #define META_WL_OUTPUT_VERSION              2
 #define META_XSERVER_VERSION                1
 #define META_GTK_SHELL_VERSION              2

src/x11/window-x11.c

@@ -863,7 +863,7 @@ meta_window_x11_grab_op_began (MetaWindow *window,
       if (window->sync_request_counter != None)
         meta_window_x11_create_sync_request_alarm (window);
 
-      if (window->size_hints.width_inc > 2 || window->size_hints.height_inc > 2)
+      if (window->size_hints.width_inc > 1 || window->size_hints.height_inc > 1)
         {
           priv->showing_resize_popup = TRUE;
           meta_window_refresh_resize_popup (window);