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backend/wayland: add support for relative-pointer-unstable-v1

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We just send relative motion events alongside absolute motion events.
Compositors can figure out how absolute and relative events are related
(e.g. whether they have been triggered by the same logical event) with
the frame event.
This commit is contained in:
Simon Ser 2019-11-12 15:32:08 +01:00 • committed by Drew DeVault
parent 4c9423278a
commit 1e568d84df
3 changed files with 43 additions and 0 deletions
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7
backend/wayland/backend.c
View file

@ -22,6 +22,7 @@
#include "xdg-decoration-unstable-v1-client-protocol.h"
#include "xdg-shell-client-protocol.h"
#include "tablet-unstable-v2-client-protocol.h"
#include "relative-pointer-unstable-v1-client-protocol.h"
struct wlr_wl_backend *get_wl_backend_from_backend(struct wlr_backend *backend) {
assert(wlr_backend_is_wl(backend));
@ -116,6 +117,9 @@ static void registry_global(void *data, struct wl_registry *registry,
&zwp_linux_dmabuf_v1_interface, 3);
zwp_linux_dmabuf_v1_add_listener(wl->zwp_linux_dmabuf_v1,
&linux_dmabuf_v1_listener, wl);
} else if (strcmp(iface, zwp_relative_pointer_manager_v1_interface.name) == 0) {
wl->zwp_relative_pointer_manager_v1 = wl_registry_bind(registry, name,
&zwp_relative_pointer_manager_v1_interface, 1);
}
}
@ -201,6 +205,9 @@ static void backend_destroy(struct wlr_backend *backend) {
if (wl->zwp_linux_dmabuf_v1) {
zwp_linux_dmabuf_v1_destroy(wl->zwp_linux_dmabuf_v1);
}
if (wl->zwp_relative_pointer_manager_v1) {
zwp_relative_pointer_manager_v1_destroy(wl->zwp_relative_pointer_manager_v1);
}
xdg_wm_base_destroy(wl->xdg_wm_base);
wl_compositor_destroy(wl->compositor);
wl_registry_destroy(wl->registry);

34
backend/wayland/wl_seat.c
View file

@ -16,6 +16,7 @@
#include <wlr/util/log.h>
#include "pointer-gestures-unstable-v1-client-protocol.h"
#include "relative-pointer-unstable-v1-client-protocol.h"
#include "backend/wayland.h"
#include "util/signal.h"
@ -446,6 +447,31 @@ static struct zwp_pointer_gesture_pinch_v1_listener gesture_pinch_impl = {
};
void relative_pointer_handle_relative_motion(void *data,
struct zwp_relative_pointer_v1 *relative_pointer, uint32_t utime_hi,
uint32_t utime_lo, wl_fixed_t dx, wl_fixed_t dy, wl_fixed_t dx_unaccel,
wl_fixed_t dy_unaccel) {
struct wlr_wl_input_device *input_device = data;
struct wlr_input_device *wlr_dev = &input_device->wlr_input_device;
uint64_t time_usec = (uint64_t)utime_hi << 32 | utime_lo;
struct wlr_event_pointer_motion wlr_event = {
.device = wlr_dev,
.time_msec = (uint32_t)(time_usec / 1000),
.delta_x = wl_fixed_to_double(dx),
.delta_y = wl_fixed_to_double(dy),
.unaccel_dx = wl_fixed_to_double(dx_unaccel),
.unaccel_dy = wl_fixed_to_double(dy_unaccel),
};
wlr_signal_emit_safe(&wlr_dev->pointer->events.motion, &wlr_event);
}
static const struct zwp_relative_pointer_v1_listener relative_pointer_listener = {
.relative_motion = relative_pointer_handle_relative_motion,
};
static void pointer_handle_output_destroy(struct wl_listener *listener,
void *data) {
struct wlr_wl_pointer *pointer =
@ -501,6 +527,14 @@ void create_wl_pointer(struct wl_pointer *wl_pointer, struct wlr_wl_output *outp
zwp_pointer_gesture_pinch_v1_add_listener(pointer->gesture_pinch, &gesture_pinch_impl, dev);
}
if (backend->zwp_relative_pointer_manager_v1) {
pointer->relative_pointer =
zwp_relative_pointer_manager_v1_get_relative_pointer(
backend->zwp_relative_pointer_manager_v1, wl_pointer);
zwp_relative_pointer_v1_add_listener(pointer->relative_pointer,
&relative_pointer_listener, dev);
}
wlr_signal_emit_safe(&backend->backend.events.new_input, wlr_dev);
}