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gdk: Add gdk_device_get_timestamp

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Give each device a timestamp that reflects the last
user activity with that device, as reflected in the
events that are produced for this device.
This commit is contained in:
Matthias Clasen 2021-03-25 22:39:15 -04:00
parent 3014649455
commit f131d68fef
4 changed files with 41 additions and 0 deletions
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28
gdk/gdkdevice.c
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@ -1381,3 +1381,31 @@ gdk_device_has_bidi_layouts (GdkDevice *device)
return FALSE;
}
void
gdk_device_set_timestamp (GdkDevice *device,
guint32 timestamp)
{
device->timestamp = timestamp;
}
/**
* gdk_device_get_timestamp:
* @device: a `GdkDevice`
*
* Returns the timestamp of the last activity for this device.
*
* In practice, this means the timestamp of the last event that was
* received from the OS for this device. (GTK may occasionally produce
* events for a device that are not received from the OS, and will not
* update the timestamp).
*
* Returns: the timestamp of the last activity for this device
*
* Since: 4.2
*/
guint32
gdk_device_get_timestamp (GdkDevice *device)
{
return device->timestamp;
}

3
gdk/gdkdevice.h
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@ -117,6 +117,9 @@ GDK_AVAILABLE_IN_ALL
GdkSurface * gdk_device_get_surface_at_position (GdkDevice *device,
double *win_x,
double *win_y);
GDK_AVAILABLE_IN_4_2
guint32 gdk_device_get_timestamp (GdkDevice *device);
G_END_DECLS
#endif /* __GDK_DEVICE_H__ */

5
gdk/gdkdeviceprivate.h
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@ -89,6 +89,8 @@ struct _GdkDevice
GdkSeat *seat;
GdkDeviceTool *last_tool;
guint32 timestamp;
};
struct _GdkDeviceClass
@ -189,6 +191,9 @@ gboolean gdk_device_get_axis (GdkDevice *device,
GdkAxisUse gdk_device_get_axis_use (GdkDevice *device,
guint index_);
void gdk_device_set_timestamp (GdkDevice *device,
guint32 timestamp);
G_END_DECLS

5
gdk/gdksurface.c
View File

@ -2248,13 +2248,18 @@ _gdk_windowing_got_event (GdkDisplay *display,
GdkPointerSurfaceInfo *pointer_info = NULL;
GdkDevice *device;
GdkEventType type;
guint32 timestamp;
_gdk_display_update_last_event (display, event);
device = gdk_event_get_device (event);
timestamp = gdk_event_get_time (event);
if (device)
{
if (timestamp != GDK_CURRENT_TIME)
gdk_device_set_timestamp (device, timestamp);
if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD &&
gdk_device_get_source (device) != GDK_SOURCE_TABLET_PAD)
{