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wlr-data-device: basic drag and drop

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master
Tony Crisci 7 years ago
parent 07259cf8ea
commit a1bfa4a2f2
2 changed files with 330 additions and 83 deletions
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15
include/wlr/types/wlr_data_device.h
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@ -2,6 +2,7 @@
#define WLR_TYPES_WLR_DATA_DEVICE_H
#include <wayland-server.h>
#include <wlr/types/wlr_seat.h>
struct wlr_data_device_manager {
struct wl_global *global;
@ -37,6 +38,20 @@ struct wlr_data_source {
} events;
};
struct wlr_drag {
struct wlr_seat_pointer_grab pointer_grab;
struct wlr_seat_handle *handle;
struct wlr_seat_handle *focus_handle;
struct wlr_surface *icon;
struct wlr_surface *focus;
struct wlr_data_source *source;
struct wl_listener icon_destroy;
struct wl_listener source_destroy;
struct wl_listener handle_unbound;
};
/**
* Create a wl data device manager global for this display.
*/

384
types/wlr_data_device.c
Unescape View File

@ -9,16 +9,79 @@
#include <wlr/types/wlr_seat.h>
#include <wlr/types/wlr_data_device.h>
#define ALL_ACTIONS (WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY | \
WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE | \
WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK)
static void data_device_start_drag(struct wl_client *client, struct wl_resource
*resource, struct wl_resource *source_resource,
struct wl_resource *origin, struct wl_resource *icon, uint32_t serial) {
wlr_log(L_DEBUG, "TODO: data device start drag");
static uint32_t data_offer_choose_action(struct wlr_data_offer *offer) {
uint32_t available_actions, preferred_action = 0;
uint32_t source_actions, offer_actions;
if (wl_resource_get_version(offer->resource) >=
WL_DATA_OFFER_ACTION_SINCE_VERSION) {
offer_actions = offer->dnd_actions;
preferred_action = offer->preferred_dnd_action;
} else {
offer_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
}
if (wl_resource_get_version(offer->source->resource) >=
WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
source_actions = offer->source->dnd_actions;
} else {
source_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
}
available_actions = offer_actions & source_actions;
if (!available_actions) {
return WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE;
}
if (offer->source->seat &&
offer->source->compositor_action & available_actions) {
return offer->source->compositor_action;
}
// If the dest side has a preferred DnD action, use it
if ((preferred_action & available_actions) != 0) {
return preferred_action;
}
// Use the first found action, in bit order
return 1 << (ffs(available_actions) - 1);
}
static void data_offer_update_action(struct wlr_data_offer *offer) {
uint32_t action;
if (!offer->source) {
return;
}
action = data_offer_choose_action(offer);
if (offer->source->current_dnd_action == action) {
return;
}
offer->source->current_dnd_action = action;
if (offer->in_ask) {
return;
}
if (wl_resource_get_version(offer->source->resource) >=
WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
wl_data_source_send_action(offer->source->resource, action);
}
if (wl_resource_get_version(offer->resource) >=
WL_DATA_OFFER_ACTION_SINCE_VERSION) {
wl_data_offer_send_action(offer->resource, action);
}
}
static void data_source_accept(struct wlr_data_source *source,
uint32_t time, const char *mime_type) {
wl_data_source_send_target(source->resource, mime_type);
@ -94,75 +157,6 @@ static void data_offer_finish(struct wl_client *client,
data_source_notify_finish(offer->source);
}
static uint32_t data_offer_choose_action(struct wlr_data_offer *offer) {
uint32_t available_actions, preferred_action = 0;
uint32_t source_actions, offer_actions;
if (wl_resource_get_version(offer->resource) >=
WL_DATA_OFFER_ACTION_SINCE_VERSION) {
offer_actions = offer->dnd_actions;
preferred_action = offer->preferred_dnd_action;
} else {
offer_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
}
if (wl_resource_get_version(offer->source->resource) >=
WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
source_actions = offer->source->dnd_actions;
} else {
source_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
}
available_actions = offer_actions & source_actions;
if (!available_actions) {
return WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE;
}
if (offer->source->seat &&
offer->source->compositor_action & available_actions) {
return offer->source->compositor_action;
}
// If the dest side has a preferred DnD action, use it
if ((preferred_action & available_actions) != 0) {
return preferred_action;
}
// Use the first found action, in bit order
return 1 << (ffs(available_actions) - 1);
}
static void data_offer_update_action(struct wlr_data_offer *offer) {
uint32_t action;
if (!offer->source) {
return;
}
action = data_offer_choose_action(offer);
if (offer->source->current_dnd_action == action) {
return;
}
offer->source->current_dnd_action = action;
if (offer->in_ask) {
return;
}
if (wl_resource_get_version(offer->source->resource) >=
WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
wl_data_source_send_action(offer->source->resource, action);
}
if (wl_resource_get_version(offer->resource) >=
WL_DATA_OFFER_ACTION_SINCE_VERSION) {
wl_data_offer_send_action(offer->resource, action);
}
}
static void data_offer_set_actions(struct wl_client *client,
struct wl_resource *resource, uint32_t dnd_actions,
uint32_t preferred_action) {
@ -348,6 +342,244 @@ static void data_device_release(struct wl_client *client,
wl_resource_destroy(resource);
}
static void drag_handle_seat_unbound(struct wl_listener *listener, void *data) {
struct wlr_drag *drag = wl_container_of(listener, drag, handle_unbound);
struct wlr_seat_handle *unbound_handle = data;
if (drag->focus_handle == unbound_handle) {
drag->focus_handle = NULL;
}
}
static void wlr_drag_set_focus(struct wlr_drag *drag,
struct wlr_surface *surface, double sx, double sy) {
if (drag->focus == surface) {
return;
}
if (drag->focus_handle && drag->focus_handle->data_device) {
wl_list_remove(&drag->handle_unbound.link);
wl_data_device_send_leave(drag->focus_handle->data_device);
drag->focus_handle = NULL;
drag->focus = NULL;
}
if (!surface || !surface->resource) {
return;
}
if (!drag->source &&
wl_resource_get_client(surface->resource) !=
wl_resource_get_client(drag->handle->wl_resource)) {
return;
}
if (drag->source && drag->source->offer) {
// unlink the offer from the source
wl_list_remove(&drag->source->offer->source_destroy.link);
drag->source->offer->source = NULL;
drag->source->offer = NULL;
}
struct wlr_seat_handle *focus_handle =
wlr_seat_handle_for_client(drag->handle->wlr_seat,
wl_resource_get_client(surface->resource));
if (!focus_handle || !focus_handle->data_device) {
return;
}
struct wl_resource *offer_resource = NULL;
if (drag->source) {
drag->source->accepted = false;
struct wlr_data_offer *offer =
wlr_data_source_send_offer(drag->source, focus_handle->data_device);
if (offer == NULL) {
return;
}
data_offer_update_action(offer);
if (wl_resource_get_version(offer->resource) >=
WL_DATA_OFFER_SOURCE_ACTIONS_SINCE_VERSION) {
wl_data_offer_send_source_actions(offer->resource,
drag->source->dnd_actions);
}
offer_resource = offer->resource;
}
uint32_t serial = wl_display_next_serial(drag->handle->wlr_seat->display);
wl_data_device_send_enter(focus_handle->data_device, serial,
surface->resource, wl_fixed_from_double(sx),
wl_fixed_from_double(sy), offer_resource);
drag->focus = surface;
drag->focus_handle = focus_handle;
drag->handle_unbound.notify = drag_handle_seat_unbound;
wl_signal_add(&focus_handle->wlr_seat->events.client_unbound,
&drag->handle_unbound);
}
static void wlr_drag_end(struct wlr_drag *drag) {
if (drag->icon) {
wl_list_remove(&drag->icon_destroy.link);
}
if (drag->source) {
wl_list_remove(&drag->source_destroy.link);
}
wlr_drag_set_focus(drag, NULL, 0, 0);
wlr_seat_pointer_end_grab(drag->pointer_grab.seat);
free(drag);
}
static void pointer_drag_enter(struct wlr_seat_pointer_grab *grab,
struct wlr_surface *surface, double sx, double sy) {
struct wlr_drag *drag = grab->data;
wlr_drag_set_focus(drag, surface, sx, sy);
}
static void pointer_drag_motion(struct wlr_seat_pointer_grab *grab,
uint32_t time, double sx, double sy) {
struct wlr_drag *drag = grab->data;
if (drag->focus && drag->focus_handle && drag->focus_handle->data_device) {
wl_data_device_send_motion(drag->focus_handle->data_device, time,
wl_fixed_from_double(sx), wl_fixed_from_double(sy));
}
}
static uint32_t pointer_drag_button(struct wlr_seat_pointer_grab *grab,
uint32_t time, uint32_t button, uint32_t state) {
struct wlr_drag *drag = grab->data;
// TODO check no buttons are pressed to end the drag
// TODO make sure the button pressed to do the drag was the same to end the
// drag
if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
if (drag->source) {
if (drag->focus_handle && drag->focus_handle->data_device &&
drag->source->current_dnd_action &&
drag->source->accepted) {
wl_data_device_send_drop(drag->focus_handle->data_device);
if (wl_resource_get_version(drag->source->resource) >=
WL_DATA_SOURCE_DND_DROP_PERFORMED_SINCE_VERSION) {
wl_data_source_send_dnd_drop_performed(
drag->source->resource);
}
drag->source->offer->in_ask =
drag->source->current_dnd_action ==
WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK;
}
} else if (wl_resource_get_version(drag->source->resource) >=
WL_DATA_SOURCE_DND_FINISHED_SINCE_VERSION) {
wl_data_source_send_cancelled(drag->source->resource);
}
wlr_drag_end(drag);
}
return 0;
}
static void pointer_drag_axis(struct wlr_seat_pointer_grab *grab, uint32_t time,
enum wlr_axis_orientation orientation, double value) {
}
static void pointer_drag_cancel(struct wlr_seat_pointer_grab *grab) {
struct wlr_drag *drag = grab->data;
wlr_drag_end(drag);
}
static const struct wlr_pointer_grab_interface pointer_drag_interface = {
.enter = pointer_drag_enter,
.motion = pointer_drag_motion,
.button = pointer_drag_button,
.axis = pointer_drag_axis,
.cancel = pointer_drag_cancel,
};
static void drag_handle_icon_destroy(struct wl_listener *listener, void *data) {
struct wlr_drag *drag = wl_container_of(listener, drag, icon_destroy);
drag->icon = NULL;
}
static void drag_handle_drag_source_destroy(struct wl_listener *listener,
void *data) {
struct wlr_drag *drag = wl_container_of(listener, drag, source_destroy);
wlr_drag_end(drag);
}
static bool seat_handle_start_drag(struct wlr_seat_handle *handle,
struct wlr_data_source *source, struct wlr_surface *icon) {
struct wlr_drag *drag = calloc(1, sizeof(struct wlr_drag));
if (drag == NULL) {
return false;
}
if (drag->icon) {
drag->icon_destroy.notify = drag_handle_icon_destroy;
wl_signal_add(&icon->events.destroy, &drag->icon_destroy);
drag->icon = icon;
}
if (source) {
drag->source_destroy.notify = drag_handle_drag_source_destroy;
wl_signal_add(&source->events.destroy, &drag->source_destroy);
drag->source = source;
}
drag->handle = handle;
drag->pointer_grab.data = drag;
drag->pointer_grab.interface = &pointer_drag_interface;
wlr_seat_pointer_clear_focus(handle->wlr_seat);
wlr_seat_pointer_start_grab(handle->wlr_seat, &drag->pointer_grab);
// TODO keyboard grab
return true;
}
static void data_device_start_drag(struct wl_client *client,
struct wl_resource *handle_resource,
struct wl_resource *source_resource,
struct wl_resource *origin_resource, struct wl_resource *icon_resource,
uint32_t serial) {
struct wlr_seat_handle *handle = wl_resource_get_user_data(handle_resource);
struct wlr_surface *origin = wl_resource_get_user_data(origin_resource);
struct wlr_data_source *source = NULL;
struct wlr_surface *icon = NULL;
if (source_resource) {
source = wl_resource_get_user_data(source_resource);
}
if (icon_resource) {
icon = wl_resource_get_user_data(icon_resource);
}
if (icon) {
if (wlr_surface_set_role(icon, "wl_data_device-icon",
handle_resource, WL_DATA_DEVICE_ERROR_ROLE) < 0) {
return;
}
}
// TODO touch grab
if (handle->wlr_seat->pointer_state.focused_surface == origin) {
if (!seat_handle_start_drag(handle, source, icon)) {
wl_resource_post_no_memory(handle_resource);
} else {
source->seat = handle;
}
}
}
static const struct wl_data_device_interface data_device_impl = {
.start_drag = data_device_start_drag,
.set_selection = data_device_set_selection,
@ -492,8 +724,8 @@ static void data_device_manager_bind(struct wl_client *client,
return;
}
wl_resource_set_implementation(resource, &data_device_manager_impl,
NULL, NULL);
wl_resource_set_implementation(resource,
&data_device_manager_impl, NULL, NULL);
}
struct wlr_data_device_manager *wlr_data_device_manager_create(

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