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https://github.com/brl/mutter.git
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clutter/x11: Hook up pointer accessibility
Pointer accessibility features requires to receive all pointer events regardless of X11 grabs. Add XI2 raw events mask and hook up the pointer accessibility handlers to the raw motion and button press/release events. https://gitlab.gnome.org/GNOME/mutter/merge_requests/512
This commit is contained in:
Olivier Fourdan
parent
db11a37a68
commit
c1303bd642
@ -30,6 +30,7 @@
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#include "clutter-backend-x11.h"
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#include "clutter-input-device-xi2.h"
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#include "clutter-input-device-tool-xi2.h"
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#include "clutter-input-pointer-a11y-private.h"
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#include "clutter-virtual-input-device-x11.h"
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#include "clutter-stage-x11.h"
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@ -1273,6 +1274,60 @@ translate_pad_event (ClutterEvent *event,
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return TRUE;
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}
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static void
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handle_raw_event (ClutterDeviceManagerXI2 *manager_xi2,
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XEvent *xevent)
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{
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ClutterInputDevice *device;
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XGenericEventCookie *cookie;
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XIEvent *xi_event;
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XIRawEvent *xev;
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float x,y;
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cookie = &xevent->xcookie;
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xi_event = (XIEvent *) cookie->data;
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xev = (XIRawEvent *) xi_event;
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device = g_hash_table_lookup (manager_xi2->devices_by_id,
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GINT_TO_POINTER (xev->deviceid));
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if (device == NULL)
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return;
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if (!_clutter_is_input_pointer_a11y_enabled (device))
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return;
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switch (cookie->evtype)
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{
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case XI_RawMotion:
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CLUTTER_NOTE (EVENT,
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"raw motion: device:%d '%s'",
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device->id,
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device->device_name);
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/* We don't get actual pointer location with raw events, and we cannot
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* rely on `clutter_input_device_get_coords()` either because of
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* unreparented toplevels (like all client-side decoration windows),
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* so we need to explicitely query the pointer here...
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*/
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if (clutter_input_device_xi2_get_pointer_location (device, &x, &y))
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_clutter_input_pointer_a11y_on_motion_event (device, x, y);
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break;
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case XI_RawButtonPress:
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case XI_RawButtonRelease:
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CLUTTER_NOTE (EVENT,
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"raw button %s: device:%d '%s' button %i",
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cookie->evtype == XI_RawButtonPress
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? "press "
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: "release",
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device->id,
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device->device_name,
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xev->detail);
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_clutter_input_pointer_a11y_on_button_event (device,
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xev->detail,
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(cookie->evtype == XI_RawButtonPress));
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break;
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}
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}
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static ClutterTranslateReturn
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clutter_device_manager_xi2_translate_event (ClutterEventTranslator *translator,
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gpointer native,
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@ -1303,6 +1358,14 @@ clutter_device_manager_xi2_translate_event (ClutterEventTranslator *translator,
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if (!xi_event)
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return CLUTTER_TRANSLATE_REMOVE;
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if (cookie->evtype == XI_RawMotion ||
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cookie->evtype == XI_RawButtonPress ||
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cookie->evtype == XI_RawButtonRelease)
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{
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handle_raw_event (manager_xi2, xevent);
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return CLUTTER_TRANSLATE_REMOVE;
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}
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if (!(xi_event->evtype == XI_HierarchyChanged ||
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xi_event->evtype == XI_DeviceChanged ||
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xi_event->evtype == XI_PropertyEvent))
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@ -2031,7 +2094,7 @@ clutter_device_manager_xi2_constructed (GObject *gobject)
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GHashTable *masters, *slaves;
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XIDeviceInfo *info;
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XIEventMask event_mask;
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unsigned char mask[2] = { 0, };
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unsigned char mask[(XI_LASTEVENT + 7) / 8] = { 0, };
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int n_devices, i;
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backend_x11 =
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@ -2083,6 +2146,19 @@ clutter_device_manager_xi2_constructed (GObject *gobject)
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event_mask.mask_len = sizeof (mask);
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event_mask.mask = mask;
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clutter_device_manager_xi2_select_events (manager,
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clutter_x11_get_root_window (),
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&event_mask);
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memset(mask, 0, sizeof (mask));
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XISetMask (mask, XI_RawMotion);
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XISetMask (mask, XI_RawButtonPress);
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XISetMask (mask, XI_RawButtonRelease);
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event_mask.deviceid = XIAllMasterDevices;
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event_mask.mask_len = sizeof (mask);
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event_mask.mask = mask;
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clutter_device_manager_xi2_select_events (manager,
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clutter_x11_get_root_window (),
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&event_mask);
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@ -46,6 +46,11 @@ struct _ClutterInputDeviceXI2
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gint device_id;
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ClutterInputDeviceTool *current_tool;
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guint inhibit_pointer_query_timer;
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gboolean query_status;
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float current_x;
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float current_y;
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#ifdef HAVE_LIBWACOM
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WacomDevice *wacom_device;
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GArray *group_modes;
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@ -114,6 +119,9 @@ clutter_input_device_xi2_finalize (GObject *object)
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g_array_unref (device_xi2->group_modes);
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#endif
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if (device_xi2->inhibit_pointer_query_timer)
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g_source_remove (device_xi2->inhibit_pointer_query_timer);
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G_OBJECT_CLASS (clutter_input_device_xi2_parent_class)->finalize (object);
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}
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@ -293,6 +301,75 @@ clutter_input_device_xi2_get_current_tool (ClutterInputDevice *device)
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return device_xi2->current_tool;
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}
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static gboolean
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clutter_input_device_xi2_query_pointer_location (ClutterInputDeviceXI2 *device_xi2)
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{
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Window xroot_window, xchild_window;
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double xroot_x, xroot_y, xwin_x, xwin_y;
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XIButtonState button_state;
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XIModifierState mod_state;
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XIGroupState group_state;
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int result;
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clutter_x11_trap_x_errors ();
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result = XIQueryPointer (clutter_x11_get_default_display (),
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device_xi2->device_id,
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clutter_x11_get_root_window (),
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&xroot_window,
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&xchild_window,
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&xroot_x, &xroot_y,
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&xwin_x, &xwin_y,
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&button_state,
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&mod_state,
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&group_state);
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clutter_x11_untrap_x_errors ();
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if (!result)
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return FALSE;
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device_xi2->current_x = (float) xroot_x;
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device_xi2->current_y = (float) xroot_y;
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return TRUE;
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}
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static gboolean
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clear_inhibit_pointer_query_cb (gpointer data)
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{
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ClutterInputDeviceXI2 *device_xi2 = CLUTTER_INPUT_DEVICE_XI2 (data);
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device_xi2->inhibit_pointer_query_timer = 0;
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return G_SOURCE_REMOVE;
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}
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gboolean
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clutter_input_device_xi2_get_pointer_location (ClutterInputDevice *device,
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float *x,
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float *y)
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{
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ClutterInputDeviceXI2 *device_xi2 = CLUTTER_INPUT_DEVICE_XI2 (device);
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g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), FALSE);
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g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE_XI2 (device_xi2), FALSE);
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g_return_val_if_fail (device->device_type == CLUTTER_POINTER_DEVICE, FALSE);
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/* Throttle XServer queries and roundtrips using an idle timeout */
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if (device_xi2->inhibit_pointer_query_timer == 0)
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{
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device_xi2->query_status =
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clutter_input_device_xi2_query_pointer_location (device_xi2);
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device_xi2->inhibit_pointer_query_timer =
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clutter_threads_add_idle (clear_inhibit_pointer_query_cb, device_xi2);
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}
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*x = device_xi2->current_x;
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*y = device_xi2->current_y;
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return device_xi2->query_status;
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}
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#ifdef HAVE_LIBWACOM
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void
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clutter_input_device_xi2_ensure_wacom_info (ClutterInputDevice *device,
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@ -48,6 +48,9 @@ void _clutter_input_device_xi2_translate_state (ClutterEvent *event,
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void clutter_input_device_xi2_update_tool (ClutterInputDevice *device,
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ClutterInputDeviceTool *tool);
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ClutterInputDeviceTool * clutter_input_device_xi2_get_current_tool (ClutterInputDevice *device);
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gboolean clutter_input_device_xi2_get_pointer_location (ClutterInputDevice *device,
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float *x,
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float *y);
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#ifdef HAVE_LIBWACOM
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void clutter_input_device_xi2_ensure_wacom_info (ClutterInputDevice *device,
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