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clutter/evdev: Move scroll notification to ClutterSeatEvdev

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This refactors the scroll event emitting code, moving it behind a
clutter_seat_evdev_ helper.

https://bugzilla.gnome.org/show_bug.cgi?id=784199
This commit is contained in:
Jonas Ådahl 2016-08-23 15:38:00 +08:00
parent 1e7628a3ef
commit d3c559a917
3 changed files with 280 additions and 210 deletions
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284
clutter/clutter/evdev/clutter-device-manager-evdev.c
View File

@ -59,9 +59,6 @@
#include "clutter-device-manager-evdev.h"
#define DISCRETE_SCROLL_STEP 10.0
/*
* Clutter makes the assumption that two core devices have ID's 2 and 3 (core
* pointer and core keyboard).
@ -400,120 +397,6 @@ notify_relative_tool_motion (ClutterInputDevice *input_device,
queue_event (event);
}
static ClutterScrollDirection
discrete_to_direction (gdouble discrete_x,
gdouble discrete_y)
{
if (discrete_x > 0)
return CLUTTER_SCROLL_RIGHT;
else if (discrete_x < 0)
return CLUTTER_SCROLL_LEFT;
else if (discrete_y > 0)
return CLUTTER_SCROLL_DOWN;
else if (discrete_y < 0)
return CLUTTER_SCROLL_UP;
else
return CLUTTER_SCROLL_SMOOTH;
}
static void
notify_discrete_scroll (ClutterInputDevice *input_device,
guint64 time_us,
ClutterScrollDirection direction,
ClutterScrollSource scroll_source,
gboolean emulated)
{
ClutterInputDeviceEvdev *device_evdev;
ClutterSeatEvdev *seat;
ClutterStage *stage;
ClutterEvent *event = NULL;
if (direction == CLUTTER_SCROLL_SMOOTH)
return;
/* We can drop the event on the floor if no stage has been
* associated with the device yet. */
stage = _clutter_input_device_get_stage (input_device);
if (stage == NULL)
return;
device_evdev = CLUTTER_INPUT_DEVICE_EVDEV (input_device);
seat = _clutter_input_device_evdev_get_seat (device_evdev);
event = clutter_event_new (CLUTTER_SCROLL);
_clutter_evdev_event_set_time_usec (event, time_us);
event->scroll.time = us2ms (time_us);
event->scroll.stage = CLUTTER_STAGE (stage);
event->scroll.device = seat->core_pointer;
_clutter_xkb_translate_state (event, seat->xkb, seat->button_state);
event->scroll.direction = direction;
event->scroll.x = seat->pointer_x;
event->scroll.y = seat->pointer_y;
clutter_event_set_device (event, seat->core_pointer);
clutter_event_set_source_device (event, input_device);
event->scroll.scroll_source = scroll_source;
_clutter_event_set_pointer_emulated (event, emulated);
queue_event (event);
}
static void
notify_scroll (ClutterInputDevice *input_device,
guint64 time_us,
gdouble dx,
gdouble dy,
ClutterScrollSource source,
ClutterScrollFinishFlags flags,
gboolean emulated)
{
ClutterInputDeviceEvdev *device_evdev;
ClutterSeatEvdev *seat;
ClutterStage *stage;
ClutterEvent *event = NULL;
gdouble scroll_factor;
/* We can drop the event on the floor if no stage has been
* associated with the device yet. */
stage = _clutter_input_device_get_stage (input_device);
if (stage == NULL)
return;
device_evdev = CLUTTER_INPUT_DEVICE_EVDEV (input_device);
seat = _clutter_input_device_evdev_get_seat (device_evdev);
event = clutter_event_new (CLUTTER_SCROLL);
_clutter_evdev_event_set_time_usec (event, time_us);
event->scroll.time = us2ms (time_us);
event->scroll.stage = CLUTTER_STAGE (stage);
event->scroll.device = seat->core_pointer;
_clutter_xkb_translate_state (event, seat->xkb, seat->button_state);
/* libinput pointer axis events are in pointer motion coordinate space.
* To convert to Xi2 discrete step coordinate space, multiply the factor
* 1/10. */
event->scroll.direction = CLUTTER_SCROLL_SMOOTH;
scroll_factor = 1.0 / DISCRETE_SCROLL_STEP;
clutter_event_set_scroll_delta (event,
scroll_factor * dx,
scroll_factor * dy);
event->scroll.x = seat->pointer_x;
event->scroll.y = seat->pointer_y;
clutter_event_set_device (event, seat->core_pointer);
clutter_event_set_source_device (event, input_device);
event->scroll.scroll_source = source;
event->scroll.finish_flags = flags;
_clutter_event_set_pointer_emulated (event, emulated);
queue_event (event);
}
static void
notify_touch_event (ClutterInputDevice *input_device,
ClutterEventType evtype,
@ -1153,40 +1036,6 @@ process_base_event (ClutterDeviceManagerEvdev *manager_evdev,
return handled;
}
static void
check_notify_discrete_scroll (ClutterDeviceManagerEvdev *manager_evdev,
ClutterInputDevice *device,
guint64 time_us,
ClutterScrollSource scroll_source)
{
ClutterInputDeviceEvdev *device_evdev =
CLUTTER_INPUT_DEVICE_EVDEV (device);
ClutterSeatEvdev *seat = _clutter_input_device_evdev_get_seat (device_evdev);
int i, n_xscrolls, n_yscrolls;
n_xscrolls = floor (fabs (seat->accum_scroll_dx) / DISCRETE_SCROLL_STEP);
n_yscrolls = floor (fabs (seat->accum_scroll_dy) / DISCRETE_SCROLL_STEP);
for (i = 0; i < n_xscrolls; i++)
{
notify_discrete_scroll (device, time_us,
seat->accum_scroll_dx > 0 ?
CLUTTER_SCROLL_RIGHT : CLUTTER_SCROLL_LEFT,
scroll_source, TRUE);
}
for (i = 0; i < n_yscrolls; i++)
{
notify_discrete_scroll (device, time_us,
seat->accum_scroll_dy > 0 ?
CLUTTER_SCROLL_DOWN : CLUTTER_SCROLL_UP,
scroll_source, TRUE);
}
seat->accum_scroll_dx = fmodf (seat->accum_scroll_dx, DISCRETE_SCROLL_STEP);
seat->accum_scroll_dy = fmodf (seat->accum_scroll_dy, DISCRETE_SCROLL_STEP);
}
static ClutterScrollSource
translate_scroll_source (enum libinput_pointer_axis_source source)
{
@ -1334,6 +1183,69 @@ seat_from_device (ClutterInputDevice *device)
return _clutter_input_device_evdev_get_seat (device_evdev);
}
static void
notify_continuous_axis (ClutterSeatEvdev *seat,
ClutterInputDevice *device,
uint64_t time_us,
ClutterScrollSource scroll_source,
struct libinput_event_pointer *axis_event)
{
gdouble dx = 0.0, dy = 0.0;
ClutterScrollFinishFlags finish_flags = CLUTTER_SCROLL_FINISHED_NONE;
if (libinput_event_pointer_has_axis (axis_event,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL))
{
dx = libinput_event_pointer_get_axis_value (
axis_event, LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
if (fabs (dx) < DBL_EPSILON)
finish_flags |= CLUTTER_SCROLL_FINISHED_HORIZONTAL;
}
if (libinput_event_pointer_has_axis (axis_event,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL))
{
dy = libinput_event_pointer_get_axis_value (
axis_event, LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
if (fabs (dy) < DBL_EPSILON)
finish_flags |= CLUTTER_SCROLL_FINISHED_VERTICAL;
}
clutter_seat_evdev_notify_scroll_continuous (seat, device, time_us,
dx, dy,
scroll_source,
CLUTTER_SCROLL_FINISHED_NONE);
}
static void
notify_discrete_axis (ClutterSeatEvdev *seat,
ClutterInputDevice *device,
uint64_t time_us,
ClutterScrollSource scroll_source,
struct libinput_event_pointer *axis_event)
{
gdouble discrete_dx = 0.0, discrete_dy = 0.0;
if (libinput_event_pointer_has_axis (axis_event,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL))
{
discrete_dx = libinput_event_pointer_get_axis_value_discrete (
axis_event, LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
}
if (libinput_event_pointer_has_axis (axis_event,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL))
{
discrete_dy = libinput_event_pointer_get_axis_value_discrete (
axis_event, LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
}
clutter_seat_evdev_notify_discrete_scroll (seat, device,
time_us,
discrete_dx, discrete_dy,
scroll_source);
}
static gboolean
process_device_event (ClutterDeviceManagerEvdev *manager_evdev,
struct libinput_event *event)
@ -1460,17 +1372,12 @@ process_device_event (ClutterDeviceManagerEvdev *manager_evdev,
case LIBINPUT_EVENT_POINTER_AXIS:
{
gdouble dx = 0.0, dy = 0.0;
gdouble discrete_x = 0.0, discrete_y = 0.0;
guint64 time_us;
gboolean wheel = FALSE;
enum libinput_pointer_axis axis;
enum libinput_pointer_axis_source source;
struct libinput_event_pointer *axis_event =
libinput_event_get_pointer_event (event);
ClutterSeatEvdev *seat;
ClutterScrollSource scroll_source;
ClutterScrollFinishFlags finish_flags = 0;
device = libinput_device_get_user_data (libinput_device);
seat = _clutter_input_device_evdev_get_seat (CLUTTER_INPUT_DEVICE_EVDEV (device));
@ -1484,63 +1391,20 @@ process_device_event (ClutterDeviceManagerEvdev *manager_evdev,
backwards-compat with existing clients, we just send multiples of
the click count. */
if (source == LIBINPUT_POINTER_AXIS_SOURCE_WHEEL)
wheel = TRUE;
axis = LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL;
if (libinput_event_pointer_has_axis (axis_event, axis))
switch (scroll_source)
{
discrete_y = libinput_event_pointer_get_axis_value_discrete (axis_event, axis);
dy = libinput_event_pointer_get_axis_value (axis_event, axis);
if (wheel)
seat->accum_scroll_dy = 0;
else if (fabs (dy) < DBL_EPSILON)
{
finish_flags |= CLUTTER_SCROLL_FINISHED_VERTICAL;
seat->accum_scroll_dy = 0;
}
else
seat->accum_scroll_dy += dy;
case CLUTTER_SCROLL_SOURCE_WHEEL:
notify_discrete_axis (seat, device, time_us, scroll_source,
axis_event);
break;
case CLUTTER_SCROLL_SOURCE_FINGER:
case CLUTTER_SCROLL_SOURCE_CONTINUOUS:
case CLUTTER_SCROLL_SOURCE_UNKNOWN:
notify_continuous_axis (seat, device, time_us, scroll_source,
axis_event);
break;
}
axis = LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL;
if (libinput_event_pointer_has_axis (axis_event, axis))
{
discrete_x = libinput_event_pointer_get_axis_value_discrete (axis_event, axis);
dx = libinput_event_pointer_get_axis_value (axis_event, axis);
if (wheel)
seat->accum_scroll_dx = 0;
else if (fabs (dx) < DBL_EPSILON)
{
finish_flags |= CLUTTER_SCROLL_FINISHED_HORIZONTAL;
seat->accum_scroll_dx = 0;
}
else
seat->accum_scroll_dx += dx;
}
if (wheel)
{
notify_scroll (device, time_us,
discrete_x * DISCRETE_SCROLL_STEP,
discrete_y * DISCRETE_SCROLL_STEP,
scroll_source, finish_flags, TRUE);
notify_discrete_scroll (device, time_us,
discrete_to_direction (discrete_x, discrete_y),
scroll_source, FALSE);
}
else
{
notify_scroll (device, time_us, dx, dy,
scroll_source, finish_flags, FALSE);
check_notify_discrete_scroll (manager_evdev, device,
time_us, scroll_source);
}
break;
}
case LIBINPUT_EVENT_TOUCH_DOWN:

191
clutter/clutter/evdev/clutter-seat-evdev.c
View File

@ -29,6 +29,7 @@
#include "clutter-seat-evdev.h"
#include <linux/input.h>
#include <math.h>
#include "clutter-event-private.h"
#include "clutter-input-device-evdev.h"
@ -42,6 +43,8 @@
#define AUTOREPEAT_VALUE 2
#define DISCRETE_SCROLL_STEP 10.0
void
clutter_seat_evdev_set_libinput_seat (ClutterSeatEvdev *seat,
struct libinput_seat *libinput_seat)
@ -569,6 +572,194 @@ clutter_seat_evdev_notify_button (ClutterSeatEvdev *seat,
queue_event (event);
}
static void
notify_scroll (ClutterInputDevice *input_device,
guint64 time_us,
gdouble dx,
gdouble dy,
ClutterScrollSource scroll_source,
ClutterScrollFinishFlags flags,
gboolean emulated)
{
ClutterInputDeviceEvdev *device_evdev;
ClutterSeatEvdev *seat;
ClutterStage *stage;
ClutterEvent *event = NULL;
gdouble scroll_factor;
/* We can drop the event on the floor if no stage has been
* associated with the device yet. */
stage = _clutter_input_device_get_stage (input_device);
if (stage == NULL)
return;
device_evdev = CLUTTER_INPUT_DEVICE_EVDEV (input_device);
seat = _clutter_input_device_evdev_get_seat (device_evdev);
event = clutter_event_new (CLUTTER_SCROLL);
_clutter_evdev_event_set_time_usec (event, time_us);
event->scroll.time = us2ms (time_us);
event->scroll.stage = CLUTTER_STAGE (stage);
event->scroll.device = seat->core_pointer;
_clutter_xkb_translate_state (event, seat->xkb, seat->button_state);
/* libinput pointer axis events are in pointer motion coordinate space.
* To convert to Xi2 discrete step coordinate space, multiply the factor
* 1/10. */
event->scroll.direction = CLUTTER_SCROLL_SMOOTH;
scroll_factor = 1.0 / DISCRETE_SCROLL_STEP;
clutter_event_set_scroll_delta (event,
scroll_factor * dx,
scroll_factor * dy);
event->scroll.x = seat->pointer_x;
event->scroll.y = seat->pointer_y;
clutter_event_set_device (event, seat->core_pointer);
clutter_event_set_source_device (event, input_device);
event->scroll.scroll_source = scroll_source;
event->scroll.finish_flags = flags;
_clutter_event_set_pointer_emulated (event, emulated);
queue_event (event);
}
static void
notify_discrete_scroll (ClutterInputDevice *input_device,
uint64_t time_us,
ClutterScrollDirection direction,
ClutterScrollSource scroll_source,
gboolean emulated)
{
ClutterInputDeviceEvdev *device_evdev;
ClutterSeatEvdev *seat;
ClutterStage *stage;
ClutterEvent *event = NULL;
if (direction == CLUTTER_SCROLL_SMOOTH)
return;
/* We can drop the event on the floor if no stage has been
* associated with the device yet. */
stage = _clutter_input_device_get_stage (input_device);
if (stage == NULL)
return;
device_evdev = CLUTTER_INPUT_DEVICE_EVDEV (input_device);
seat = _clutter_input_device_evdev_get_seat (device_evdev);
event = clutter_event_new (CLUTTER_SCROLL);
_clutter_evdev_event_set_time_usec (event, time_us);
event->scroll.time = us2ms (time_us);
event->scroll.stage = CLUTTER_STAGE (stage);
event->scroll.device = seat->core_pointer;
_clutter_xkb_translate_state (event, seat->xkb, seat->button_state);
event->scroll.direction = direction;
event->scroll.x = seat->pointer_x;
event->scroll.y = seat->pointer_y;
clutter_event_set_device (event, seat->core_pointer);
clutter_event_set_source_device (event, input_device);
event->scroll.scroll_source = scroll_source;
_clutter_event_set_pointer_emulated (event, emulated);
queue_event (event);
}
static void
check_notify_discrete_scroll (ClutterSeatEvdev *seat,
ClutterInputDevice *device,
uint64_t time_us,
ClutterScrollSource scroll_source)
{
int i, n_xscrolls, n_yscrolls;
n_xscrolls = floor (fabs (seat->accum_scroll_dx) / DISCRETE_SCROLL_STEP);
n_yscrolls = floor (fabs (seat->accum_scroll_dy) / DISCRETE_SCROLL_STEP);
for (i = 0; i < n_xscrolls; i++)
{
notify_discrete_scroll (device, time_us,
seat->accum_scroll_dx > 0 ?
CLUTTER_SCROLL_RIGHT : CLUTTER_SCROLL_LEFT,
scroll_source, TRUE);
}
for (i = 0; i < n_yscrolls; i++)
{
notify_discrete_scroll (device, time_us,
seat->accum_scroll_dy > 0 ?
CLUTTER_SCROLL_DOWN : CLUTTER_SCROLL_UP,
scroll_source, TRUE);
}
seat->accum_scroll_dx = fmodf (seat->accum_scroll_dx, DISCRETE_SCROLL_STEP);
seat->accum_scroll_dy = fmodf (seat->accum_scroll_dy, DISCRETE_SCROLL_STEP);
}
void
clutter_seat_evdev_notify_scroll_continuous (ClutterSeatEvdev *seat,
ClutterInputDevice *input_device,
uint64_t time_us,
double dx,
double dy,
ClutterScrollSource scroll_source,
ClutterScrollFinishFlags finish_flags)
{
if (finish_flags & CLUTTER_SCROLL_FINISHED_HORIZONTAL)
seat->accum_scroll_dx = 0;
else
seat->accum_scroll_dx += dx;
if (finish_flags & CLUTTER_SCROLL_FINISHED_VERTICAL)
seat->accum_scroll_dy = 0;
else
seat->accum_scroll_dy += dy;
notify_scroll (input_device, time_us, dx, dy, scroll_source,
finish_flags, FALSE);
check_notify_discrete_scroll (seat, input_device, time_us, scroll_source);
}
static ClutterScrollDirection
discrete_to_direction (double discrete_dx,
double discrete_dy)
{
if (discrete_dx > 0)
return CLUTTER_SCROLL_RIGHT;
else if (discrete_dx < 0)
return CLUTTER_SCROLL_LEFT;
else if (discrete_dy > 0)
return CLUTTER_SCROLL_DOWN;
else if (discrete_dy < 0)
return CLUTTER_SCROLL_UP;
else
g_assert_not_reached ();
}
void
clutter_seat_evdev_notify_discrete_scroll (ClutterSeatEvdev *seat,
ClutterInputDevice *input_device,
uint64_t time_us,
double discrete_dx,
double discrete_dy,
ClutterScrollSource scroll_source)
{
notify_scroll (input_device, time_us,
discrete_dx * DISCRETE_SCROLL_STEP,
discrete_dy * DISCRETE_SCROLL_STEP,
scroll_source, CLUTTER_SCROLL_FINISHED_NONE,
TRUE);
notify_discrete_scroll (input_device, time_us,
discrete_to_direction (discrete_dx, discrete_dy),
scroll_source, FALSE);
}
void
clutter_seat_evdev_free (ClutterSeatEvdev *seat)
{

15
clutter/clutter/evdev/clutter-seat-evdev.h
View File

@ -106,6 +106,21 @@ void clutter_seat_evdev_notify_button (ClutterSeatEvdev *seat,
uint32_t button,
uint32_t state);
void clutter_seat_evdev_notify_scroll_continuous (ClutterSeatEvdev *seat,
ClutterInputDevice *input_device,
uint64_t time_us,
double dx,
double dy,
ClutterScrollSource source,
ClutterScrollFinishFlags flags);
void clutter_seat_evdev_notify_discrete_scroll (ClutterSeatEvdev *seat,
ClutterInputDevice *input_device,
uint64_t time_us,
double discrete_dx,
double discrete_dy,
ClutterScrollSource source);
void clutter_seat_evdev_set_libinput_seat (ClutterSeatEvdev *seat,
struct libinput_seat *libinput_seat);