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wayland: Implement wl_tablet_tool device event emission

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This takes care of the emission of motion/down/up/button, in addition
to the extra distance/pressure/tilt axes.
This commit is contained in:
Carlos Garnacho 2015-10-28 11:50:52 +01:00
parent edfb8fe19b
commit 521e934cb9
2 changed files with 291 additions and 0 deletions
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289
src/wayland/meta-wayland-tablet-tool.c
View File

@ -26,6 +26,7 @@
#include "config.h"
#include <glib.h>
#include <clutter/evdev/clutter-evdev.h>
#include <wayland-server.h>
#include "tablet-unstable-v1-server-protocol.h"
@ -35,6 +36,15 @@
#include "meta-wayland-tablet-seat.h"
#include "meta-wayland-tablet-tool.h"
#ifdef HAVE_NATIVE_BACKEND
#include "backends/native/meta-backend-native.h"
#endif
#define TABLET_AXIS_MAX 65535
#define DEGREES_PRECISION 100 /* wl_tablet_tool.tilt and .rotation define
* angles in hundreths of a degree
*/
static void
unbind_resource (struct wl_resource *resource)
{
@ -66,6 +76,45 @@ move_resources_for_client (struct wl_list *destination,
}
}
static uint32_t
input_device_get_capabilities (ClutterInputDevice *device)
{
ClutterInputAxis axis;
guint32 capabilities = 0, i;
for (i = 0; i < clutter_input_device_get_n_axes (device); i++)
{
axis = clutter_input_device_get_axis (device, i);
switch (axis)
{
case CLUTTER_INPUT_AXIS_PRESSURE:
capabilities |= 1 << ZWP_TABLET_TOOL_V1_CAPABILITY_PRESSURE;
break;
case CLUTTER_INPUT_AXIS_DISTANCE:
capabilities |= 1 << ZWP_TABLET_TOOL_V1_CAPABILITY_DISTANCE;
break;
case CLUTTER_INPUT_AXIS_XTILT:
case CLUTTER_INPUT_AXIS_YTILT:
capabilities |= 1 << ZWP_TABLET_TOOL_V1_CAPABILITY_TILT;
break;
case CLUTTER_INPUT_AXIS_ROTATION:
capabilities |= 1 << ZWP_TABLET_TOOL_V1_CAPABILITY_ROTATION;
break;
case CLUTTER_INPUT_AXIS_WHEEL:
capabilities |= 1 << ZWP_TABLET_TOOL_V1_CAPABILITY_WHEEL;
break;
case CLUTTER_INPUT_AXIS_SLIDER:
capabilities |= 1 << ZWP_TABLET_TOOL_V1_CAPABILITY_SLIDER;
break;
default:
break;
}
}
return capabilities;
}
static void
broadcast_proximity_in (MetaWaylandTabletTool *tool)
{
@ -338,6 +387,239 @@ repick_for_event (MetaWaylandTabletTool *tool,
sync_focus_surface (tool, for_event);
}
static void
meta_wayland_tablet_tool_get_relative_coordinates (MetaWaylandTabletTool *tool,
ClutterInputDevice *device,
MetaWaylandSurface *surface,
wl_fixed_t *sx,
wl_fixed_t *sy)
{
float xf = 0.0f, yf = 0.0f;
ClutterPoint pos;
clutter_input_device_get_coords (device, NULL, &pos);
clutter_actor_transform_stage_point (CLUTTER_ACTOR (meta_surface_actor_get_texture (surface->surface_actor)),
pos.x, pos.y, &xf, &yf);
*sx = wl_fixed_from_double (xf) / surface->scale;
*sy = wl_fixed_from_double (yf) / surface->scale;
}
static void
broadcast_motion (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
struct wl_resource *resource;
ClutterInputDevice *device;
wl_fixed_t sx, sy;
device = clutter_event_get_source_device (event);
meta_wayland_tablet_tool_get_relative_coordinates (tool, device,
tool->focus_surface,
&sx, &sy);
wl_resource_for_each (resource, &tool->focus_resource_list)
{
zwp_tablet_tool_v1_send_motion (resource, sx, sy);
}
}
static void
broadcast_down (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
struct wl_resource *resource;
tool->down_serial = wl_display_next_serial (tool->seat->manager->wl_display);
wl_resource_for_each (resource, &tool->focus_resource_list)
{
zwp_tablet_tool_v1_send_down (resource, tool->down_serial);
}
}
static void
broadcast_up (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
struct wl_resource *resource;
wl_resource_for_each (resource, &tool->focus_resource_list)
{
zwp_tablet_tool_v1_send_up (resource);
}
}
static void
broadcast_button (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
struct wl_resource *resource;
guint32 button;
tool->button_serial = wl_display_next_serial (tool->seat->manager->wl_display);
#ifdef HAVE_NATIVE_BACKEND
MetaBackend *backend = meta_get_backend ();
if (META_IS_BACKEND_NATIVE (backend))
button = clutter_evdev_event_get_event_code (event);
else
#endif
{
/* We can't do much better here, there's several
* different BTN_ ranges to cover.
*/
button = event->button.button;
}
wl_resource_for_each (resource, &tool->focus_resource_list)
{
zwp_tablet_tool_v1_send_button (resource, tool->button_serial, button,
event->type == CLUTTER_BUTTON_PRESS ?
ZWP_TABLET_TOOL_V1_BUTTON_STATE_PRESSED :
ZWP_TABLET_TOOL_V1_BUTTON_STATE_RELEASED);
}
}
static void
broadcast_axis (MetaWaylandTabletTool *tool,
const ClutterEvent *event,
ClutterInputAxis axis)
{
struct wl_resource *resource;
ClutterInputDevice *source;
uint32_t value;
gdouble val;
source = clutter_event_get_source_device (event);
if (!clutter_input_device_get_axis_value (source, event->motion.axes, axis, &val))
return;
value = val * TABLET_AXIS_MAX;
wl_resource_for_each (resource, &tool->focus_resource_list)
{
switch (axis)
{
case CLUTTER_INPUT_AXIS_PRESSURE:
zwp_tablet_tool_v1_send_pressure (resource, value);
break;
case CLUTTER_INPUT_AXIS_DISTANCE:
zwp_tablet_tool_v1_send_distance (resource, value);
break;
case CLUTTER_INPUT_AXIS_SLIDER:
zwp_tablet_tool_v1_send_slider (resource, value);
break;
default:
break;
}
}
}
static void
broadcast_tilt (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
struct wl_resource *resource;
ClutterInputDevice *source;
gdouble xtilt, ytilt;
source = clutter_event_get_source_device (event);
if (!clutter_input_device_get_axis_value (source, event->motion.axes,
CLUTTER_INPUT_AXIS_XTILT, &xtilt) ||
!clutter_input_device_get_axis_value (source, event->motion.axes,
CLUTTER_INPUT_AXIS_YTILT, &ytilt))
return;
wl_resource_for_each (resource, &tool->focus_resource_list)
{
zwp_tablet_tool_v1_send_tilt (resource,
(int32_t) (xtilt * DEGREES_PRECISION),
(int32_t) (ytilt * DEGREES_PRECISION));
}
}
static void
broadcast_rotation (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
struct wl_resource *resource;
ClutterInputDevice *source;
gdouble rotation;
source = clutter_event_get_source_device (event);
if (!clutter_input_device_get_axis_value (source, event->motion.axes,
CLUTTER_INPUT_AXIS_ROTATION,
&rotation))
return;
wl_resource_for_each (resource, &tool->focus_resource_list)
{
zwp_tablet_tool_v1_send_rotation (resource,
(int32_t) rotation * DEGREES_PRECISION);
}
}
static void
broadcast_axes (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
ClutterInputDevice *device;
guint32 capabilities;
if (!event->motion.axes)
return;
device = clutter_event_get_source_device (event);
capabilities = input_device_get_capabilities (device);
if (capabilities & (1 << ZWP_TABLET_TOOL_V1_CAPABILITY_PRESSURE))
broadcast_axis (tool, event, CLUTTER_INPUT_AXIS_PRESSURE);
if (capabilities & (1 << ZWP_TABLET_TOOL_V1_CAPABILITY_DISTANCE))
broadcast_axis (tool, event, CLUTTER_INPUT_AXIS_DISTANCE);
if (capabilities & (1 << ZWP_TABLET_TOOL_V1_CAPABILITY_TILT))
broadcast_tilt (tool, event);
if (capabilities & (1 << ZWP_TABLET_TOOL_V1_CAPABILITY_ROTATION))
broadcast_rotation (tool, event);
if (capabilities & (1 << ZWP_TABLET_TOOL_V1_CAPABILITY_SLIDER))
broadcast_axis (tool, event, CLUTTER_INPUT_AXIS_SLIDER);
/* FIXME: Missing wp_tablet_tool.wheel */
}
static void
handle_motion_event (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
if (!tool->focus_surface)
return;
broadcast_motion (tool, event);
broadcast_axes (tool, event);
broadcast_frame (tool, event);
}
static void
handle_button_event (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
{
if (!tool->focus_surface)
return;
if (event->type == CLUTTER_BUTTON_PRESS && event->button.button == 1)
broadcast_down (tool, event);
else if (event->type == CLUTTER_BUTTON_RELEASE && event->button.button == 1)
broadcast_up (tool, event);
else
broadcast_button (tool, event);
broadcast_frame (tool, event);
}
void
meta_wayland_tablet_tool_update (MetaWaylandTabletTool *tool,
const ClutterEvent *event)
@ -377,6 +659,13 @@ meta_wayland_tablet_tool_handle_event (MetaWaylandTabletTool *tool,
case CLUTTER_PROXIMITY_OUT:
meta_wayland_tablet_tool_set_focus (tool, NULL, event);
break;
case CLUTTER_MOTION:
handle_motion_event (tool, event);
break;
case CLUTTER_BUTTON_PRESS:
case CLUTTER_BUTTON_RELEASE:
handle_button_event (tool, event);
break;
default:
return CLUTTER_EVENT_PROPAGATE;
}

2
src/wayland/meta-wayland-tablet-tool.h
View File

@ -44,6 +44,8 @@ struct _MetaWaylandTabletTool
guint32 pressed_buttons;
guint32 proximity_serial;
guint32 down_serial;
guint32 button_serial;
MetaWaylandTablet *current_tablet;
};