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wayland: handle the wl_touch interface
The events are routed through a new slave device with type GDK_SOURCE_TOUCHSCREEN, minimal tracking of touches is done to keep the state for each of those. https://bugzilla.gnome.org/show_bug.cgi?id=728426
This commit is contained in:
Carlos Garnacho
Matthias Clasen
parent
af8d6e6549
commit
1a2a5a44bd
@ -40,12 +40,24 @@ typedef struct _DataOffer DataOffer;
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typedef struct _GdkWaylandSelectionOffer GdkWaylandSelectionOffer;
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typedef struct _GdkWaylandTouchData GdkWaylandTouchData;
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struct _GdkWaylandTouchData
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{
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uint32_t id;
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gdouble x;
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gdouble y;
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GdkWindow *window;
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guint initial_touch : 1;
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};
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struct _GdkWaylandDeviceData
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{
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guint32 id;
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struct wl_seat *wl_seat;
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struct wl_pointer *wl_pointer;
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struct wl_keyboard *wl_keyboard;
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struct wl_touch *wl_touch;
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GdkDisplay *display;
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GdkDeviceManager *device_manager;
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@ -54,9 +66,12 @@ struct _GdkWaylandDeviceData
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GdkDevice *master_keyboard;
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GdkDevice *pointer;
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GdkDevice *keyboard;
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GdkDevice *touch;
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GdkCursor *cursor;
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GdkKeymap *keymap;
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GHashTable *touches;
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GdkModifierType modifiers;
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GdkWindow *pointer_focus;
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GdkWindow *keyboard_focus;
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@ -1226,6 +1241,174 @@ keyboard_handle_modifiers (void *data,
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g_signal_emit_by_name (keymap, "direction-changed");
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}
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static GdkWaylandTouchData *
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_device_manager_add_touch (GdkWaylandDeviceData *device,
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uint32_t id,
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struct wl_surface *surface)
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{
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GdkWaylandTouchData *touch;
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touch = g_new0 (GdkWaylandTouchData, 1);
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touch->id = id;
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touch->window = wl_surface_get_user_data (surface);
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touch->initial_touch = (g_hash_table_size (device->touches) == 0);
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g_hash_table_insert (device->touches, GUINT_TO_POINTER (id), touch);
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return touch;
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}
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static GdkWaylandTouchData *
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_device_manager_get_touch (GdkWaylandDeviceData *device,
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uint32_t id)
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{
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return g_hash_table_lookup (device->touches, GUINT_TO_POINTER (id));
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}
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static void
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_device_manager_remove_touch (GdkWaylandDeviceData *device,
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uint32_t id)
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{
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g_hash_table_remove (device->touches, GUINT_TO_POINTER (id));
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}
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static GdkEvent *
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_create_touch_event (GdkWaylandDeviceData *device,
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GdkWaylandTouchData *touch,
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GdkEventType evtype,
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uint32_t time)
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{
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GdkWaylandDisplay *display = GDK_WAYLAND_DISPLAY (device->display);
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gint x_root, y_root;
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GdkEvent *event;
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event = gdk_event_new (evtype);
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event->touch.window = g_object_ref (touch->window);
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gdk_event_set_device (event, device->master_pointer);
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gdk_event_set_source_device (event, device->touch);
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event->touch.time = time;
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event->touch.state = device->modifiers;
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gdk_event_set_screen (event, display->screen);
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event->touch.sequence = GUINT_TO_POINTER (touch->id);
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if (touch->initial_touch)
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{
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_gdk_event_set_pointer_emulated (event, TRUE);
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event->touch.emulating_pointer = TRUE;
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}
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gdk_window_get_root_coords (touch->window,
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touch->x, touch->y,
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&x_root, &y_root);
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event->touch.x = touch->x;
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event->touch.y = touch->y;
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event->touch.x_root = x_root;
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event->touch.y_root = y_root;
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return event;
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}
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static void
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touch_handle_down (void *data,
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struct wl_touch *wl_touch,
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uint32_t serial,
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uint32_t time,
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struct wl_surface *wl_surface,
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int32_t id,
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wl_fixed_t x,
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wl_fixed_t y)
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{
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GdkWaylandDeviceData *device = data;
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GdkWaylandTouchData *touch;
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GdkEvent *event;
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touch = _device_manager_add_touch (device, id, wl_surface);
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touch->x = wl_fixed_to_double (x);
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touch->y = wl_fixed_to_double (y);
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event = _create_touch_event (device, touch, GDK_TOUCH_BEGIN, time);
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GDK_NOTE (EVENTS,
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g_message ("touch begin %f %f", event->touch.x, event->touch.y));
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_gdk_wayland_display_deliver_event (device->display, event);
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}
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static void
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touch_handle_up (void *data,
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struct wl_touch *wl_touch,
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uint32_t serial,
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uint32_t time,
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int32_t id)
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{
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GdkWaylandDeviceData *device = data;
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GdkWaylandTouchData *touch;
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GdkEvent *event;
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touch = _device_manager_get_touch (device, id);
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event = _create_touch_event (device, touch, GDK_TOUCH_END, time);
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GDK_NOTE (EVENTS,
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g_message ("touch end %f %f", event->touch.x, event->touch.y));
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_gdk_wayland_display_deliver_event (device->display, event);
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_device_manager_remove_touch (device, id);
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}
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static void
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touch_handle_motion (void *data,
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struct wl_touch *wl_touch,
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uint32_t time,
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int32_t id,
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wl_fixed_t x,
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wl_fixed_t y)
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{
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GdkWaylandDeviceData *device = data;
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GdkWaylandTouchData *touch;
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GdkEvent *event;
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touch = _device_manager_get_touch (device, id);
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touch->x = wl_fixed_to_double (x);
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touch->y = wl_fixed_to_double (y);
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event = _create_touch_event (device, touch, GDK_TOUCH_UPDATE, time);
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GDK_NOTE (EVENTS,
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g_message ("touch update %f %f", event->touch.x, event->touch.y));
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_gdk_wayland_display_deliver_event (device->display, event);
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}
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static void
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touch_handle_frame (void *data,
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struct wl_touch *wl_touch)
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{
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}
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static void
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touch_handle_cancel (void *data,
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struct wl_touch *wl_touch)
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{
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GdkWaylandDeviceData *device = data;
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GdkWaylandTouchData *touch;
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GHashTableIter iter;
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GdkEvent *event;
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g_hash_table_iter_init (&iter, device->touches);
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while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &touch))
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{
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event = _create_touch_event (device, touch, GDK_TOUCH_CANCEL,
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GDK_CURRENT_TIME);
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_gdk_wayland_display_deliver_event (device->display, event);
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g_hash_table_iter_remove (&iter);
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}
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GDK_NOTE (EVENTS, g_message ("touch cancel"));
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}
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static const struct wl_pointer_listener pointer_listener = {
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pointer_handle_enter,
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pointer_handle_leave,
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@ -1242,6 +1425,14 @@ static const struct wl_keyboard_listener keyboard_listener = {
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keyboard_handle_modifiers,
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};
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static const struct wl_touch_listener touch_listener = {
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touch_handle_down,
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touch_handle_up,
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touch_handle_motion,
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touch_handle_frame,
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touch_handle_cancel
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};
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static void
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seat_handle_capabilities (void *data,
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struct wl_seat *seat,
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@ -1324,6 +1515,43 @@ seat_handle_capabilities (void *data,
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g_object_unref (device->keyboard);
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device->keyboard = NULL;
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}
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if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !device->wl_touch)
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{
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device->wl_touch = wl_seat_get_touch (seat);
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wl_touch_set_user_data (device->wl_touch, device);
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wl_touch_add_listener (device->wl_touch, &touch_listener, device);
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device->touch = g_object_new (GDK_TYPE_WAYLAND_DEVICE,
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"name", "Wayland Touch",
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"type", GDK_DEVICE_TYPE_SLAVE,
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"input-source", GDK_SOURCE_TOUCHSCREEN,
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"input-mode", GDK_MODE_SCREEN,
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"has-cursor", FALSE,
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"display", device->display,
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"device-manager", device->device_manager,
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NULL);
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_gdk_device_set_associated_device (device->touch, device->master_pointer);
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GDK_WAYLAND_DEVICE (device->touch)->device = device;
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device_manager->devices =
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g_list_prepend (device_manager->devices, device->touch);
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g_signal_emit_by_name (device_manager, "device-added", device->touch);
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}
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else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && device->wl_touch)
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{
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wl_touch_destroy (device->wl_touch);
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device->wl_touch = NULL;
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_gdk_device_set_associated_device (device->touch, NULL);
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device_manager->devices =
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g_list_remove (device_manager->devices, device->touch);
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g_signal_emit_by_name (device_manager, "device-removed", device->touch);
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g_object_unref (device->touch);
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device->touch = NULL;
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}
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}
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static const struct wl_seat_listener seat_listener = {
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@ -1405,7 +1633,8 @@ _gdk_wayland_device_manager_add_seat (GdkDeviceManager *device_manager,
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device->keymap = _gdk_wayland_keymap_new ();
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device->display = display;
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device->device_manager = device_manager;
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device->touches = g_hash_table_new_full (NULL, NULL, NULL,
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(GDestroyNotify) g_free);
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device->wl_seat = wl_seat;
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wl_seat_add_listener (device->wl_seat, &seat_listener, device);
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@ -1443,6 +1672,7 @@ _gdk_wayland_device_manager_remove_seat (GdkDeviceManager *manager,
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wl_surface_destroy (device->pointer_surface);
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/* FIXME: destroy data_device */
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g_clear_object (&device->keyboard_settings);
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g_hash_table_destroy (device->touches);
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g_free (device);
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break;
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