[PATCH weston v2 13/21] Introduce wl_relative_pointer interface
Jonas Ådahl
jadahl at gmail.com
Wed May 13 03:26:34 PDT 2015
A wl_relative_pointer object is an extension to the wl_pointer interface
only used for emitting relative pointer events. It will only emit events
when the parent pointer has focus.
To get a relative pointer object, use the get_relative_pointer request
of the global wl_relative_pointer_manager object. When stabilizing it
might make more sense to just add it to wl_seat instead of having a
single use global interface.
All interface names are currently prefixed with underscore in order to
avoid any future conflicts with stable protocol.
Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
---
Makefile.am | 7 +-
protocol/relative-pointer.xml | 112 +++++++++++++++++++++++++
src/compositor.c | 3 +
src/compositor.h | 5 ++
src/input.c | 186 ++++++++++++++++++++++++++++++++++++++----
5 files changed, 294 insertions(+), 19 deletions(-)
create mode 100644 protocol/relative-pointer.xml
diff --git a/Makefile.am b/Makefile.am
index 0a30cb4..70c436f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -105,7 +105,9 @@ nodist_weston_SOURCES = \
protocol/presentation_timing-protocol.c \
protocol/presentation_timing-server-protocol.h \
protocol/scaler-protocol.c \
- protocol/scaler-server-protocol.h
+ protocol/scaler-server-protocol.h \
+ protocol/relative-pointer-protocol.c \
+ protocol/relative-pointer-server-protocol.h
BUILT_SOURCES += $(nodist_weston_SOURCES)
@@ -1183,7 +1185,8 @@ EXTRA_DIST += \
protocol/presentation_timing.xml \
protocol/scaler.xml \
protocol/ivi-application.xml \
- protocol/ivi-hmi-controller.xml
+ protocol/ivi-hmi-controller.xml \
+ protocol/relative-pointer.xml
#
# manual test modules in tests subdirectory
diff --git a/protocol/relative-pointer.xml b/protocol/relative-pointer.xml
new file mode 100644
index 0000000..d9632b9
--- /dev/null
+++ b/protocol/relative-pointer.xml
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="relative_pointer">
+
+ <copyright>
+ Copyright © 2014 Jonas Ådahl
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that copyright notice and this permission
+ notice appear in supporting documentation, and that the name of
+ the copyright holders not be used in advertising or publicity
+ pertaining to distribution of the software without specific,
+ written prior permission. The copyright holders make no
+ representations about the suitability of this software for any
+ purpose. It is provided "as is" without express or implied
+ warranty.
+
+ THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+ THIS SOFTWARE.
+ </copyright>
+
+ <interface name="_wl_relative_pointer_manager" version="1">
+ <description summary="get relative pointer objects">
+ A global interface used for getting the relative pointer object for a
+ given seat.
+ </description>
+
+ <request name="get_relative_pointer">
+ <description summary="get a relative pointer object">
+ Create a relative pointer interface given a wl_pointer object. See
+ the wl_relative_pointer interface for more details.
+ </description>
+
+ <arg name="id" type="new_id" interface="_wl_relative_pointer"/>
+ <arg name="pointer" type="object" interface="wl_pointer"/>
+ </request>
+ </interface>
+
+ <interface name="_wl_relative_pointer" version="1">
+ <description summary="relative pointer object">
+ A wl_relative_pointer object is an extension to the wl_pointer interface
+ used for emitting relative pointer events. It shares the same focus as
+ wl_pointer objects of the same seat and will only emit events when it
+ has focus.
+ </description>
+
+ <request name="release" type="destructor">
+ <description summary="release the relative pointer object"/>
+ </request>
+
+ <event name="relative_motion">
+ <description summary="relative pointer motion">
+ Relative pointer motion from the pointer of the seat associated with
+ this object.
+
+ A relative motion is in the same dimension as regular wl_pointer motion
+ events, except they do not represent an absolute position. For instance,
+ moving a pointer from (x, y) to (x', y') would have the equivalent
+ relative motion (x' - x, y' - y).
+
+ This event also contains non-accelerated motion deltas. The
+ non-accelerated delta is, when applicable, the regular pointer motion
+ delta as it was before having applied motion acceleration
+ transformations. The compositor will have applied the same processing
+ (such as normalization) meaning the events will have roughly the same
+ magnitude as accelerated motion events.
+
+ Note that it does not represent 'raw' events as they were read from some
+ device. What acceleration corresponds to is device specific and may be
+ identical to non-accelerated for some devices, while for others not.
+
+ Relative motions are not coupled to wl_pointer.motion events, and can
+ be sent in combination with such events, but also independently. There
+ may also be scenarious where wl_pointer.motion is sent, but there is no
+ relative motion.
+
+ The motion vectors are encoded as double fixed point values.
+
+ A double fixed point value is a 64 bit data type encoded as two separate
+ signed 32 bit integers. The integral part of the value is stored in one
+ of the integers and the fractional part in the other.
+ </description>
+
+ <arg name="time" type="uint"
+ summary="timestamp with millisecond granularity"/>
+ <arg name="dx_int" type="int"
+ summary="integral part of the x component of the motion vector"/>
+ <arg name="dx_frac" type="int"
+ summary="fractional part of the x component of the motion vector"/>
+ <arg name="dy_int" type="int"
+ summary="integral part of the y component of the motion vector"/>
+ <arg name="dy_frac" type="int"
+ summary="fractional part of the y component of the motion vector"/>
+ <arg name="dx_unaccel_int" type="int"
+ summary="integral part of the x component of the unaccelerated motion vector"/>
+ <arg name="dx_unaccel_frac" type="int"
+ summary="fractional part of the x component of the unaccelerated motion vector"/>
+ <arg name="dy_unaccel_int" type="int"
+ summary="integral part of the y component of the unaccelerated motion vector"/>
+ <arg name="dy_unaccel_frac" type="int"
+ summary="fractional part of the y component of the unaccelerated motion vector"/>
+ </event>
+ </interface>
+
+</protocol>
diff --git a/src/compositor.c b/src/compositor.c
index 5594d30..b462531 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -4560,6 +4560,9 @@ weston_compositor_init(struct weston_compositor *ec,
weston_plane_init(&ec->primary_plane, ec, 0, 0);
weston_compositor_stack_plane(ec, &ec->primary_plane, NULL);
+ if (weston_input_init(ec) != 0)
+ return -1;
+
s = weston_config_get_section(ec->config, "keyboard", NULL, NULL);
weston_config_section_get_string(s, "keymap_rules",
(char **) &xkb_names.rules, NULL);
diff --git a/src/compositor.h b/src/compositor.h
index 331b758..55cc88f 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -340,7 +340,9 @@ struct weston_pointer {
struct weston_seat *seat;
struct wl_list resource_list;
+ struct wl_list relative_resource_list;
struct wl_list focus_resource_list;
+ struct wl_list relative_focus_resource_list;
struct weston_view *focus;
uint32_t focus_serial;
struct wl_listener focus_view_listener;
@@ -1584,6 +1586,9 @@ weston_output_mode_switch_to_native(struct weston_output *output);
int
noop_renderer_init(struct weston_compositor *ec);
+int
+weston_input_init(struct weston_compositor *compositor);
+
struct weston_compositor *
backend_init(struct wl_display *display, int *argc, char *argv[],
struct weston_config *config);
diff --git a/src/input.c b/src/input.c
index 059ab03..47f3868 100644
--- a/src/input.c
+++ b/src/input.c
@@ -32,7 +32,9 @@
#include <limits.h>
#include "../shared/os-compatibility.h"
+#include "../shared/util.h"
#include "compositor.h"
+#include "protocol/relative-pointer-server-protocol.h"
static void
empty_region(pixman_region32_t *region)
@@ -47,6 +49,49 @@ static void unbind_resource(struct wl_resource *resource)
}
WL_EXPORT void
+weston_pointer_motion_to_abs(struct weston_pointer *pointer,
+ struct weston_pointer_motion_event *event,
+ wl_fixed_t *x, wl_fixed_t *y)
+{
+ if (event->mask & WESTON_POINTER_MOTION_ABS) {
+ *x = wl_fixed_from_double(event->x);
+ *y = wl_fixed_from_double(event->y);
+ } else if (event->mask & WESTON_POINTER_MOTION_REL) {
+ *x = pointer->x + wl_fixed_from_double(event->dx);
+ *y = pointer->y + wl_fixed_from_double(event->dy);
+ } else {
+ assert(!"invalid motion event");
+ *x = *y = 0;
+ }
+}
+
+static int
+weston_pointer_motion_to_rel(struct weston_pointer *pointer,
+ struct weston_pointer_motion_event *event,
+ double *dx, double *dy,
+ double *dx_unaccel, double *dy_unaccel)
+{
+ if (event->mask & WESTON_POINTER_MOTION_REL &&
+ event->mask & WESTON_POINTER_MOTION_REL_NOACCEL) {
+ *dx = event->dx;
+ *dy = event->dy;
+ *dx_unaccel = event->dx_unaccel;
+ *dy_unaccel = event->dy_unaccel;
+ return 1;
+ } else if (event->mask & WESTON_POINTER_MOTION_REL) {
+ *dx_unaccel = *dx = event->dx;
+ *dy_unaccel = *dy = event->dy;
+ return 1;
+ } else if (event->mask & WESTON_POINTER_MOTION_REL_NOACCEL) {
+ *dx_unaccel = *dx = event->dx_unaccel;
+ *dy_unaccel = *dy = event->dy_unaccel;
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+WL_EXPORT void
weston_seat_repick(struct weston_seat *seat)
{
const struct weston_pointer *pointer = seat->pointer;
@@ -162,6 +207,42 @@ default_grab_pointer_focus(struct weston_pointer_grab *grab)
}
static void
+weston_pointer_send_relative_motion(struct weston_pointer *pointer,
+ uint32_t time,
+ struct weston_pointer_motion_event *event)
+{
+ double dx, dy, dx_unaccel, dy_unaccel;
+ int32_t dx_int, dx_frac;
+ int32_t dy_int, dy_frac;
+ int32_t dx_unaccel_int, dx_unaccel_frac;
+ int32_t dy_unaccel_int, dy_unaccel_frac;
+ struct wl_list *resource_list;
+ struct wl_resource *resource;
+
+ if (weston_pointer_motion_to_rel(pointer, event,
+ &dx, &dy,
+ &dx_unaccel, &dy_unaccel)) {
+ resource_list = &pointer->relative_focus_resource_list;
+ wl_double_fixed_from_double(dx, &dx_int, &dx_frac);
+ wl_double_fixed_from_double(dy, &dy_int, &dy_frac);
+ wl_double_fixed_from_double(dx_unaccel,
+ &dx_unaccel_int,
+ &dx_unaccel_frac);
+ wl_double_fixed_from_double(dy_unaccel,
+ &dy_unaccel_int,
+ &dy_unaccel_frac);
+ wl_resource_for_each(resource, resource_list) {
+ _wl_relative_pointer_send_relative_motion(
+ resource, time,
+ dx_int, dx_frac,
+ dy_int, dy_frac,
+ dx_unaccel_int, dx_unaccel_frac,
+ dy_unaccel_int, dy_unaccel_frac);
+ }
+ }
+}
+
+static void
default_grab_pointer_motion(struct weston_pointer_grab *grab, uint32_t time,
struct weston_pointer_motion_event *event)
{
@@ -187,6 +268,8 @@ default_grab_pointer_motion(struct weston_pointer_grab *grab, uint32_t time,
pointer->sx, pointer->sy);
}
}
+
+ weston_pointer_send_relative_motion(pointer, time, event);
}
static void
@@ -492,7 +575,9 @@ weston_pointer_create(struct weston_seat *seat)
return NULL;
wl_list_init(&pointer->resource_list);
+ wl_list_init(&pointer->relative_resource_list);
wl_list_init(&pointer->focus_resource_list);
+ wl_list_init(&pointer->relative_focus_resource_list);
weston_pointer_set_default_grab(pointer,
seat->compositor->default_pointer_grab);
wl_list_init(&pointer->focus_resource_listener.link);
@@ -654,6 +739,7 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
struct wl_display *display = pointer->seat->compositor->wl_display;
uint32_t serial;
struct wl_list *focus_resource_list;
+ struct wl_list *relative_focus_resource_list;
int refocus = 0;
if ((!pointer->focus && view) ||
@@ -663,6 +749,7 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
refocus = 1;
focus_resource_list = &pointer->focus_resource_list;
+ relative_focus_resource_list = &pointer->relative_focus_resource_list;
if (!wl_list_empty(focus_resource_list) && refocus) {
serial = wl_display_next_serial(display);
@@ -672,6 +759,8 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
}
move_resources(&pointer->resource_list, focus_resource_list);
+ move_resources(&pointer->relative_resource_list,
+ relative_focus_resource_list);
}
if (find_resource_for_view(&pointer->resource_list, view) && refocus) {
@@ -689,6 +778,9 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
move_resources_for_client(focus_resource_list,
&pointer->resource_list,
surface_client);
+ move_resources_for_client(relative_focus_resource_list,
+ &pointer->relative_resource_list,
+ surface_client);
wl_resource_for_each(resource, focus_resource_list) {
wl_pointer_send_enter(resource,
@@ -921,23 +1013,6 @@ weston_pointer_move_to(struct weston_pointer *pointer,
}
WL_EXPORT void
-weston_pointer_motion_to_abs(struct weston_pointer *pointer,
- struct weston_pointer_motion_event *event,
- wl_fixed_t *x, wl_fixed_t *y)
-{
- if (event->mask & WESTON_POINTER_MOTION_ABS) {
- *x = wl_fixed_from_double(event->x);
- *y = wl_fixed_from_double(event->y);
- } else if (event->mask & WESTON_POINTER_MOTION_REL) {
- *x = pointer->x + wl_fixed_from_double(event->dx);
- *y = pointer->y + wl_fixed_from_double(event->dy);
- } else {
- assert(!"invalid motion event");
- *x = *y = 0;
- }
-}
-
-WL_EXPORT void
weston_pointer_move(struct weston_pointer *pointer,
struct weston_pointer_motion_event *event)
{
@@ -1997,6 +2072,72 @@ bind_seat(struct wl_client *client, void *data, uint32_t version, uint32_t id)
wl_seat_send_name(resource, seat->seat_name);
}
+static void
+relative_pointer_release(struct wl_client *client,
+ struct wl_resource *resource)
+{
+ wl_resource_destroy(resource);
+}
+
+static const struct _wl_relative_pointer_interface relative_pointer_interface = {
+ relative_pointer_release
+};
+
+static void
+relative_pointer_manager_get_relative_pointer(struct wl_client *client,
+ struct wl_resource *resource,
+ uint32_t id,
+ struct wl_resource *pointer_resource)
+{
+ struct weston_pointer *pointer =
+ wl_resource_get_user_data(pointer_resource);
+ struct wl_resource *cr;
+ struct weston_view *focus;
+
+ cr = wl_resource_create(client, &_wl_relative_pointer_interface,
+ wl_resource_get_version(resource), id);
+ if (cr == NULL) {
+ wl_client_post_no_memory(client);
+ return;
+ }
+
+ /* May be moved to focused list later by either
+ * weston_pointer_set_focus or directly if this client is already
+ * focused */
+ wl_list_insert(&pointer->relative_resource_list,
+ wl_resource_get_link(cr));
+ wl_resource_set_implementation(cr, &relative_pointer_interface,
+ pointer,
+ unbind_resource);
+
+ focus = pointer->focus;
+ if (focus && focus->surface->resource &&
+ wl_resource_get_client(focus->surface->resource) == client) {
+ wl_list_remove(wl_resource_get_link(cr));
+ wl_list_insert(&pointer->relative_focus_resource_list,
+ wl_resource_get_link(cr));
+ }
+}
+
+static const struct _wl_relative_pointer_manager_interface relative_pointer_manager = {
+ relative_pointer_manager_get_relative_pointer,
+};
+
+static void
+bind_relative_pointer_manager(struct wl_client *client, void *data,
+ uint32_t version, uint32_t id)
+{
+ struct weston_compositor *compositor = data;
+ struct wl_resource *resource;
+
+ resource = wl_resource_create(client,
+ &_wl_relative_pointer_manager_interface,
+ 1, id);
+ wl_resource_set_implementation(resource, &relative_pointer_manager,
+ compositor,
+ NULL);
+}
+
#ifdef ENABLE_XKBCOMMON
int
weston_compositor_xkb_init(struct weston_compositor *ec,
@@ -2418,3 +2559,14 @@ weston_seat_release(struct weston_seat *seat)
wl_signal_emit(&seat->destroy_signal, seat);
}
+
+int
+weston_input_init(struct weston_compositor *compositor)
+{
+ if (!wl_global_create(compositor->wl_display,
+ &_wl_relative_pointer_manager_interface, 1,
+ compositor, bind_relative_pointer_manager))
+ return -1;
+
+ return 0;
+}
--
2.1.4
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