[mutter/wip/ui-on-own-connection: 13/13] ff

[Jasper St. Pierre <jstpierre src gnome org>]

commit 5bc7ae40958473ad3bbf8b0e717fa13b1aeb936d
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sun Apr 6 16:16:21 2014 -0400

    ff

 src/core/display-private.h |    1 +
 src/core/display.c         |    2 +-
 src/core/events.c          |  115 ++++++++++++++++++++---------
 src/ui/ui.c                |  175 --------------------------------------------
 src/ui/ui.h                |    2 -
 5 files changed, 82 insertions(+), 213 deletions(-)
---
diff --git a/src/core/display-private.h b/src/core/display-private.h
index 26b83a0..03acc7a 100644
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -92,6 +92,7 @@ struct _MetaDisplay
   Display *xdisplay;
 
   int clutter_event_filter;
+  GSource *x11_event_source;
 
   Window leader_window;
   Window timestamp_pinging_window;
diff --git a/src/core/display.c b/src/core/display.c
index 648aaf4..776754c 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -446,7 +446,7 @@ meta_display_open (void)
   
   meta_verbose ("Opening display '%s'\n", XDisplayName (NULL));
 
-  xdisplay = meta_ui_get_display ();
+  xdisplay = XOpenDisplay (NULL);
   
   if (xdisplay == NULL)
     {
diff --git a/src/core/events.c b/src/core/events.c
index 6016766..881ecfc 100644
--- a/src/core/events.c
+++ b/src/core/events.c
@@ -78,9 +78,8 @@ get_input_event (MetaDisplay *display,
     {
       XIEvent *input_event;
 
-      /* NB: GDK event filters already have generic events
-       * allocated, so no need to do XGetEventData() on our own
-       */
+      XGetEventData (display->xdisplay, &event->xcookie);
+
       input_event = (XIEvent *) event->xcookie.data;
 
       switch (input_event->evtype)
@@ -1750,12 +1749,12 @@ window_has_xwindow (MetaWindow *window,
  * busy around here. Most of this function is a ginormous switch statement
  * dealing with all the kinds of events that might turn up.
  */
-static gboolean
+static void
 meta_display_handle_xevent (MetaDisplay *display,
                             XEvent      *event)
 {
   Window modified;
-  gboolean bypass_compositor = FALSE, bypass_gtk = FALSE;
+  gboolean bypass_compositor = FALSE;
   XIEvent *input_event;
   MetaMonitorManager *monitor;
 
@@ -1766,15 +1765,11 @@ meta_display_handle_xevent (MetaDisplay *display,
 #ifdef HAVE_STARTUP_NOTIFICATION
   if (sn_display_process_event (display->sn_display, event))
     {
-      bypass_gtk = bypass_compositor = TRUE;
+      bypass_compositor = TRUE;
       goto out;
     }
 #endif
 
-  /* Intercept XRandR events early and don't attempt any
-     processing for them. We still let them through to Gdk though,
-     so it can update its own internal state.
-  */
   monitor = meta_monitor_manager_get ();
   if (meta_monitor_manager_handle_xevent (monitor, event))
     {
@@ -1803,7 +1798,7 @@ meta_display_handle_xevent (MetaDisplay *display,
     {
       if (meta_screen_handle_xevent (display->screen, event))
         {
-          bypass_gtk = bypass_compositor = TRUE;
+          bypass_compositor = TRUE;
           goto out;
         }
     }
@@ -1838,7 +1833,7 @@ meta_display_handle_xevent (MetaDisplay *display,
 #ifdef HAVE_XI23
   if (meta_display_process_barrier_event (display, input_event))
     {
-      bypass_gtk = bypass_compositor = TRUE;
+      bypass_compositor = TRUE;
       goto out;
     }
 #endif /* HAVE_XI23 */
@@ -1849,27 +1844,20 @@ meta_display_handle_xevent (MetaDisplay *display,
    */
   if (handle_input_xevent (display, input_event, event->xany.serial))
     {
-      bypass_gtk = bypass_compositor = TRUE;
+      bypass_compositor = TRUE;
       goto out;
     }
 
   if (handle_other_xevent (display, event))
-    {
-      bypass_gtk = TRUE;
-      goto out;
-    }
+    goto out;
 
  out:
   if (!bypass_compositor)
     {
       MetaWindow *window = modified != None ? meta_display_lookup_x_window (display, modified) : NULL;
 
-      if (meta_compositor_process_event (display->compositor, event, window))
-        bypass_gtk = TRUE;
+      meta_compositor_process_event (display->compositor, event, window);
     }
-
-  display->current_time = CurrentTime;
-  return bypass_gtk;
 }
 
 static void
@@ -2180,42 +2168,99 @@ meta_display_handle_event (MetaDisplay        *display,
   return bypass_clutter;
 }
 
-static GdkFilterReturn
-xevent_filter (GdkXEvent *xevent,
-               GdkEvent  *event,
-               gpointer   data)
+static gboolean
+event_callback (const ClutterEvent *event,
+                gpointer            data)
 {
   MetaDisplay *display = data;
 
-  if (meta_display_handle_xevent (display, xevent))
-    return GDK_FILTER_REMOVE;
+  return meta_display_handle_event (display, event);
+}
+
+typedef struct {
+  GSource source;
+
+  MetaDisplay *display;
+  GPollFD event_poll_fd;
+} X11EventSource;
+
+static gboolean
+x11_event_source_prepare (GSource *source,
+                          gint    *timeout)
+{
+  X11EventSource *source_x11 = (X11EventSource *) source;
+  MetaDisplay *display = source_x11->display;
+
+  *timeout = -1;
+
+  return XPending (display->xdisplay);
+}
+
+static gboolean
+x11_event_source_check (GSource *source)
+{
+  X11EventSource *source_x11 = (X11EventSource *) source;
+  MetaDisplay *display = source_x11->display;
+
+  if (source_x11->event_poll_fd.revents & G_IO_IN)
+    return XPending (display->xdisplay);
   else
-    return GDK_FILTER_CONTINUE;
+    return FALSE;
 }
 
 static gboolean
-event_callback (const ClutterEvent *event,
-                gpointer            data)
+x11_event_source_dispatch (GSource     *source,
+                           GSourceFunc  callback,
+                           gpointer     user_data)
 {
-  MetaDisplay *display = data;
+  X11EventSource *source_x11 = (X11EventSource *) source;
+  MetaDisplay *display = source_x11->display;
+  XEvent event;
 
-  return meta_display_handle_event (display, event);
+  XNextEvent (display->xdisplay, &event);
+  meta_display_handle_xevent (display, &event);
+
+  return TRUE;
+}
+
+static GSourceFuncs x11_event_source_funcs = {
+  x11_event_source_prepare,
+  x11_event_source_check,
+  x11_event_source_dispatch,
+};
+
+static GSource *
+x11_event_source_new (MetaDisplay *display)
+{
+  GSource *source = g_source_new (&x11_event_source_funcs, sizeof (X11EventSource));
+  X11EventSource *source_x11 = (X11EventSource *) source;
+
+  source_x11->display = display;
+  source_x11->event_poll_fd.fd = ConnectionNumber (display->xdisplay);
+  source_x11->event_poll_fd.events = G_IO_IN;
+  g_source_add_poll (source, &source_x11->event_poll_fd);
+
+  return source;
 }
 
 void
 meta_display_init_events (MetaDisplay *display)
 {
-  gdk_window_add_filter (NULL, xevent_filter, display);
   display->clutter_event_filter = clutter_event_add_filter (NULL,
                                                             event_callback,
                                                             NULL,
                                                             display);
+
+  display->x11_event_source = x11_event_source_new (display);
+  g_source_attach (display->x11_event_source, NULL);
 }
 
 void
 meta_display_free_events (MetaDisplay *display)
 {
-  gdk_window_remove_filter (NULL, xevent_filter, display);
   clutter_event_remove_filter (display->clutter_event_filter);
   display->clutter_event_filter = 0;
+
+  g_source_unref (display->x11_event_source);
+  display->x11_event_source = NULL;
 }
diff --git a/src/ui/ui.c b/src/ui/ui.c
index b609f9b..f913c51 100644
--- a/src/ui/ui.c
+++ b/src/ui/ui.c
@@ -61,177 +61,6 @@ meta_ui_init (void)
     meta_fatal ("Unable to open X display %s\n", XDisplayName (NULL));
 }
 
-Display*
-meta_ui_get_display (void)
-{
-  return GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
-}
-
-/* For XInput2 */
-#include "display-private.h"
-
-static gboolean
-is_input_event (XEvent *event)
-{
-  MetaDisplay *display = meta_get_display ();
-
-  return (event->type == GenericEvent &&
-          event->xcookie.extension == display->xinput_opcode);
-}
-
-/* We do some of our event handling in frames.c, which expects
- * GDK events delivered by GTK+.  However, since the transition to
- * client side windows, we can't let GDK see button events, since the
- * client-side tracking of implicit and explicit grabs it does will
- * get confused by our direct use of X grabs in the core code.
- *
- * So we do a very minimal GDK => GTK event conversion here and send on the
- * events we care about, and then filter them out so they don't go
- * through the normal GDK event handling.
- *
- * To reduce the amount of code, the only events fields filled out
- * below are the ones that frames.c uses. If frames.c is modified to
- * use more fields, more fields need to be filled out below.
- */
-
-static gboolean
-maybe_redirect_mouse_event (MetaUI *ui,
-                            XEvent *xevent)
-{
-  GdkDisplay *gdisplay;
-  GdkDeviceManager *gmanager;
-  GdkDevice *gdevice;
-  GdkEvent *gevent;
-  GdkWindow *gdk_window;
-  Window window;
-  XIEvent *xev;
-  XIDeviceEvent *xev_d = NULL;
-  XIEnterEvent *xev_e = NULL;
-
-  if (!is_input_event (xevent))
-    return FALSE;
-
-  xev = (XIEvent *) xevent->xcookie.data;
-
-  switch (xev->evtype)
-    {
-    case XI_ButtonPress:
-    case XI_ButtonRelease:
-    case XI_Motion:
-      xev_d = (XIDeviceEvent *) xev;
-      window = xev_d->event;
-      break;
-    case XI_Enter:
-    case XI_Leave:
-      xev_e = (XIEnterEvent *) xev;
-      window = xev_e->event;
-      break;
-    default:
-      return FALSE;
-    }
-
-  gdisplay = ui->display;
-  gdk_window = gdk_x11_window_lookup_for_display (gdisplay, window);
-  if (gdk_window == NULL)
-    return FALSE;
-
-  gmanager = gdk_display_get_device_manager (gdisplay);
-  gdevice = gdk_x11_device_manager_lookup (gmanager, META_VIRTUAL_CORE_POINTER_ID);
-
-  /* If GDK already thinks it has a grab, we better let it see events; this
-   * is the menu-navigation case and events need to get sent to the appropriate
-   * (client-side) subwindow for individual menu items.
-   */
-  if (gdk_display_device_is_grabbed (gdisplay, gdevice))
-    return FALSE;
-
-  switch (xev->evtype)
-    {
-    case XI_ButtonPress:
-    case XI_ButtonRelease:
-      if (xev_d->evtype == XI_ButtonPress)
-        {
-          GtkSettings *settings = gtk_settings_get_default ();
-          int double_click_time;
-          int double_click_distance;
-
-          g_object_get (settings,
-                        "gtk-double-click-time", &double_click_time,
-                        "gtk-double-click-distance", &double_click_distance,
-                        NULL);
-
-          if (xev_d->detail == ui->button_click_number &&
-              xev_d->event == ui->button_click_window &&
-              xev_d->time < ui->button_click_time + double_click_time &&
-              ABS (xev_d->event_x - ui->button_click_x) <= double_click_distance &&
-              ABS (xev_d->event_y - ui->button_click_y) <= double_click_distance)
-            {
-              gevent = gdk_event_new (GDK_2BUTTON_PRESS);
-
-              ui->button_click_number = 0;
-            }
-          else
-            {
-              gevent = gdk_event_new (GDK_BUTTON_PRESS);
-              ui->button_click_number = xev_d->detail;
-              ui->button_click_window = xev_d->event;
-              ui->button_click_time = xev_d->time;
-              ui->button_click_x = xev_d->event_x;
-              ui->button_click_y = xev_d->event_y;
-            }
-        }
-      else
-        {
-          gevent = gdk_event_new (GDK_BUTTON_RELEASE);
-        }
-
-      gevent->button.window = g_object_ref (gdk_window);
-      gevent->button.button = xev_d->detail;
-      gevent->button.time = xev_d->time;
-      gevent->button.x = xev_d->event_x;
-      gevent->button.y = xev_d->event_y;
-      gevent->button.x_root = xev_d->root_x;
-      gevent->button.y_root = xev_d->root_y;
-
-      break;
-    case XI_Motion:
-      gevent = gdk_event_new (GDK_MOTION_NOTIFY);
-      gevent->motion.type = GDK_MOTION_NOTIFY;
-      gevent->motion.window = g_object_ref (gdk_window);
-      break;
-    case XI_Enter:
-    case XI_Leave:
-      gevent = gdk_event_new (xev_e->evtype == XI_Enter ? GDK_ENTER_NOTIFY : GDK_LEAVE_NOTIFY);
-      gevent->crossing.window = g_object_ref (gdk_window);
-      gevent->crossing.x = xev_e->event_x;
-      gevent->crossing.y = xev_e->event_y;
-      break;
-    default:
-      g_assert_not_reached ();
-      break;
-    }
-
-  /* If we've gotten here, we've created the gdk_event and should send it on */
-  gdk_event_set_device (gevent, gdevice);
-  gtk_main_do_event (gevent);
-  gdk_event_free (gevent);
-
-  return TRUE;
-}
-
-static GdkFilterReturn
-ui_filter_func (GdkXEvent *xevent,
-                GdkEvent *event,
-                gpointer data)
-{
-  MetaUI *ui = data;
-
-  if (maybe_redirect_mouse_event (ui, xevent))
-    return GDK_FILTER_REMOVE;
-  else
-    return GDK_FILTER_CONTINUE;
-}
-
 MetaUI*
 meta_ui_new (void)
 {
@@ -251,8 +80,6 @@ meta_ui_new (void)
    */
   gtk_widget_show (GTK_WIDGET (ui->frames));
 
-  gdk_window_add_filter (NULL, ui_filter_func, ui);
-
   return ui;
 }
 
@@ -261,8 +88,6 @@ meta_ui_free (MetaUI *ui)
 {
   gtk_widget_destroy (GTK_WIDGET (ui->frames));
 
-  gdk_window_remove_filter (NULL, ui_filter_func, ui);
-
   g_free (ui);
 }
 
diff --git a/src/ui/ui.h b/src/ui/ui.h
index 5f8f415..1e40baa 100644
--- a/src/ui/ui.h
+++ b/src/ui/ui.h
@@ -42,8 +42,6 @@ typedef enum
 
 void meta_ui_init (void);
 
-Display* meta_ui_get_display (void);
-
 MetaUI* meta_ui_new (void);
 void    meta_ui_free (MetaUI *ui);