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wayland: Roundtrip until we've receive initial input and output configuration

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We use a ref-count mechanism to track whether parts of the init sequence
still needs round trips to receive remaining initial state.  Typically
we need a couple of roundtrips total to get the global list, then the
input and output configurations, but with the ref-count we avoid making
global assumptions like that.

https://bugzilla.gnome.org/show_bug.cgi?id=696340
This commit is contained in:
Kristian Høgsberg 2013-03-26 14:42:14 -04:00
parent b1aa23f4bd
commit a9e980e578
4 changed files with 28 additions and 1 deletions
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5
gdk/wayland/gdkdevice-wayland.c
View File

@ -1106,6 +1106,7 @@ seat_handle_capabilities(void *data, struct wl_seat *seat,
GdkWaylandDeviceData *device = data;
GdkWaylandDeviceManager *device_manager =
GDK_WAYLAND_DEVICE_MANAGER(device->device_manager);
GdkWaylandDisplay *display = GDK_WAYLAND_DISPLAY (device->display);
if ((caps & WL_SEAT_CAPABILITY_POINTER) && !device->wl_pointer)
{
@ -1178,6 +1179,10 @@ seat_handle_capabilities(void *data, struct wl_seat *seat,
_gdk_device_set_associated_device (device->pointer, device->keyboard);
_gdk_device_set_associated_device (device->keyboard, device->pointer);
}
/* Once we have the capabilities event we know we have all events
* from the wl_seat and need no further init roundtrips. */
display->init_ref_count--;
}
static const struct wl_seat_listener seat_listener = {

15
gdk/wayland/gdkdisplay-wayland.c
View File

@ -100,6 +100,7 @@ gdk_registry_handle_global(void *data, struct wl_registry *registry, uint32_t id
if (strcmp(interface, "wl_compositor") == 0) {
display_wayland->compositor =
wl_registry_bind(display_wayland->wl_registry, id, &wl_compositor_interface, 1);
display_wayland->init_ref_count--;
} else if (strcmp(interface, "wl_shm") == 0) {
display_wayland->shm =
wl_registry_bind(display_wayland->wl_registry, id, &wl_shm_interface, 1);
@ -113,10 +114,18 @@ gdk_registry_handle_global(void *data, struct wl_registry *registry, uint32_t id
output =
wl_registry_bind(display_wayland->wl_registry, id, &wl_output_interface, 1);
_gdk_wayland_screen_add_output(display_wayland->screen, output);
/* We need to roundtrip until we've received the modes and
* geometry events for the output, which gives us the physical
* properties and available modes on the output. */
display_wayland->init_ref_count++;
} else if (strcmp(interface, "wl_seat") == 0) {
seat = wl_registry_bind(display_wayland->wl_registry, id, &wl_seat_interface, 1);
_gdk_wayland_device_manager_add_device (gdk_display->device_manager,
seat);
/* We need to roundtrip until we've received the wl_seat
* capabilities event which informs us of available input devices
* on this seat. */
display_wayland->init_ref_count++;
} else if (strcmp(interface, "wl_data_device_manager") == 0) {
display_wayland->data_device_manager =
wl_registry_bind(display_wayland->wl_registry, id,
@ -164,7 +173,11 @@ _gdk_wayland_display_open (const gchar *display_name)
display_wayland->wl_registry = wl_display_get_registry(display_wayland->wl_display);
wl_registry_add_listener(display_wayland->wl_registry, &registry_listener, display_wayland);
wl_display_dispatch(display_wayland->wl_display);
/* We use init_ref_count to track whether some part of our
* initialization still needs a roundtrip to complete. */
display_wayland->init_ref_count = 1;
while (display_wayland->init_ref_count > 0)
wl_display_roundtrip(display_wayland->wl_display);
display_wayland->event_source =
_gdk_wayland_display_event_source_new (display);

2
gdk/wayland/gdkdisplay-wayland.h
View File

@ -66,6 +66,8 @@ struct _GdkWaylandDisplay
GSource *event_source;
int init_ref_count;
struct xkb_context *xkb_context;
};

7
gdk/wayland/gdkscreen-wayland.c
View File

@ -79,6 +79,7 @@ struct _GdkWaylandScreenClass
struct _GdkWaylandMonitor
{
GdkWaylandScreen *screen;
struct wl_output *output;
GdkRectangle geometry;
int width_mm;
@ -859,6 +860,7 @@ output_handle_geometry(void *data,
int32_t transform)
{
GdkWaylandMonitor *monitor = (GdkWaylandMonitor *)data;
GdkWaylandDisplay *display = GDK_WAYLAND_DISPLAY (monitor->screen->display);
monitor->geometry.x = x;
monitor->geometry.y = y;
@ -868,6 +870,10 @@ output_handle_geometry(void *data,
monitor->manufacturer = g_strdup (make);
monitor->output_name = g_strdup (model);
/* Once we have the geometry event we know we have all events
* from the wl_output and need no further init roundtrips. */
display->init_ref_count--;
}
static void
@ -901,6 +907,7 @@ _gdk_wayland_screen_add_output (GdkScreen *screen,
GdkWaylandMonitor *monitor = g_new0(GdkWaylandMonitor, 1);
monitor->output = output;
monitor->screen = screen_wayland;
g_ptr_array_add(screen_wayland->monitors, monitor);
wl_output_add_listener(output, &output_listener, monitor);