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sway/sway/input/seatop_default.c
Michael Weiser abb82c153e input: Extend swipe gesture support to finger count 
Swipe pointer gesture bindings added in an earlier commit would catch
swipes indiscriminately, ignoring the number of fingers used.

Add the necessary logic to distinguish three- from four-finger swipes.
Other finger counts cannot be bound to and are passed through to clients.
Continue to trivially map each dimension of a gesture to discrete pseudo
button codes considering that we're unlikely to take this much further
and would otherwise need to extend struct sway_binding to carry some
kind of button-specific internal data.

Test plan:
- add workspace switching to config like so:

bindsym --whole-window SWIPE_3_LEFT workspace prev_on_output
bindsym --whole-window SWIPE_4_RIGHT workspace next_on_output

- start sway and open two workspaces
- switch back and forth using horizontal three- and four-finger swipes,
  observing that different finger counts are necessary per direction

Signed-off-by: Michael Weiser <michael.weiser@gmx.de>
2021-08-05 20:07:45 +02:00

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#define _POSIX_C_SOURCE 200809L
#include <float.h>
#include <libevdev/libevdev.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_tablet_v2.h>
#include <wlr/types/wlr_xcursor_manager.h>
#include "sway/desktop/transaction.h"
#include "sway/input/cursor.h"
#include "sway/input/seat.h"
#include "sway/input/tablet.h"
#include "sway/output.h"
#include "sway/tree/view.h"
#include "sway/tree/workspace.h"
#include "log.h"
#if HAVE_XWAYLAND
#include "sway/xwayland.h"
#endif
struct seatop_default_event {
struct sway_node *previous_node;
uint32_t pressed_buttons[SWAY_CURSOR_PRESSED_BUTTONS_CAP];
size_t pressed_button_count;
bool swiping;
uint8_t swipe_fingers;
double swipe_travel_x, swipe_travel_y;
};
/*-----------------------------------------\
* Functions shared by multiple callbacks /
*---------------------------------------*/
/**
* Determine if the edge of the given container is on the edge of the
* workspace/output.
*/
static bool edge_is_external(struct sway_container *cont, enum wlr_edges edge) {
enum sway_container_layout layout = L_NONE;
switch (edge) {
case WLR_EDGE_TOP:
case WLR_EDGE_BOTTOM:
layout = L_VERT;
break;
case WLR_EDGE_LEFT:
case WLR_EDGE_RIGHT:
layout = L_HORIZ;
break;
case WLR_EDGE_NONE:
sway_assert(false, "Never reached");
return false;
}
// Iterate the parents until we find one with the layout we want,
// then check if the child has siblings between it and the edge.
while (cont) {
if (container_parent_layout(cont) == layout) {
list_t *siblings = container_get_siblings(cont);
int index = list_find(siblings, cont);
if (index > 0 && (edge == WLR_EDGE_LEFT || edge == WLR_EDGE_TOP)) {
return false;
}
if (index < siblings->length - 1 &&
(edge == WLR_EDGE_RIGHT || edge == WLR_EDGE_BOTTOM)) {
return false;
}
}
cont = cont->pending.parent;
}
return true;
}
static enum wlr_edges find_edge(struct sway_container *cont,
struct wlr_surface *surface, struct sway_cursor *cursor) {
if (!cont->view || (surface && cont->view->surface != surface)) {
return WLR_EDGE_NONE;
}
if (cont->pending.border == B_NONE || !cont->pending.border_thickness ||
cont->pending.border == B_CSD) {
return WLR_EDGE_NONE;
}
if (cont->pending.fullscreen_mode) {
return WLR_EDGE_NONE;
}
enum wlr_edges edge = 0;
if (cursor->cursor->x < cont->pending.x + cont->pending.border_thickness) {
edge |= WLR_EDGE_LEFT;
}
if (cursor->cursor->y < cont->pending.y + cont->pending.border_thickness) {
edge |= WLR_EDGE_TOP;
}
if (cursor->cursor->x >= cont->pending.x + cont->pending.width - cont->pending.border_thickness) {
edge |= WLR_EDGE_RIGHT;
}
if (cursor->cursor->y >= cont->pending.y + cont->pending.height - cont->pending.border_thickness) {
edge |= WLR_EDGE_BOTTOM;
}
return edge;
}
/**
* If the cursor is over a _resizable_ edge, return the edge.
* Edges that can't be resized are edges of the workspace.
*/
enum wlr_edges find_resize_edge(struct sway_container *cont,
struct wlr_surface *surface, struct sway_cursor *cursor) {
enum wlr_edges edge = find_edge(cont, surface, cursor);
if (edge && !container_is_floating(cont) && edge_is_external(cont, edge)) {
return WLR_EDGE_NONE;
}
return edge;
}
/**
* Return the mouse binding which matches modifier, click location, release,
* and pressed button state, otherwise return null.
*/
static struct sway_binding* get_active_mouse_binding(
struct seatop_default_event *e, list_t *bindings, uint32_t modifiers,
bool release, bool on_titlebar, bool on_border, bool on_content,
bool on_workspace, const char *identifier) {
uint32_t click_region =
((on_titlebar || on_workspace) ? BINDING_TITLEBAR : 0) |
((on_border || on_workspace) ? BINDING_BORDER : 0) |
((on_content || on_workspace) ? BINDING_CONTENTS : 0);
struct sway_binding *current = NULL;
for (int i = 0; i < bindings->length; ++i) {
struct sway_binding *binding = bindings->items[i];
if (modifiers ^ binding->modifiers ||
e->pressed_button_count != (size_t)binding->keys->length ||
release != (binding->flags & BINDING_RELEASE) ||
!(click_region & binding->flags) ||
(on_workspace &&
(click_region & binding->flags) != click_region) ||
(strcmp(binding->input, identifier) != 0 &&
strcmp(binding->input, "*") != 0)) {
continue;
}
bool match = true;
for (size_t j = 0; j < e->pressed_button_count; j++) {
uint32_t key = *(uint32_t *)binding->keys->items[j];
if (key != e->pressed_buttons[j]) {
match = false;
break;
}
}
if (!match) {
continue;
}
if (!current || strcmp(current->input, "*") == 0) {
current = binding;
if (strcmp(current->input, identifier) == 0) {
// If a binding is found for the exact input, quit searching
break;
}
}
}
return current;
}
/**
* Remove a button (and duplicates) from the sorted list of currently pressed
* buttons.
*/
static void state_erase_button(struct seatop_default_event *e,
uint32_t button) {
size_t j = 0;
for (size_t i = 0; i < e->pressed_button_count; ++i) {
if (i > j) {
e->pressed_buttons[j] = e->pressed_buttons[i];
}
if (e->pressed_buttons[i] != button) {
++j;
}
}
while (e->pressed_button_count > j) {
--e->pressed_button_count;
e->pressed_buttons[e->pressed_button_count] = 0;
}
}
/**
* Add a button to the sorted list of currently pressed buttons, if there
* is space.
*/
static void state_add_button(struct seatop_default_event *e, uint32_t button) {
if (e->pressed_button_count >= SWAY_CURSOR_PRESSED_BUTTONS_CAP) {
return;
}
size_t i = 0;
while (i < e->pressed_button_count && e->pressed_buttons[i] < button) {
++i;
}
size_t j = e->pressed_button_count;
while (j > i) {
e->pressed_buttons[j] = e->pressed_buttons[j - 1];
--j;
}
e->pressed_buttons[i] = button;
e->pressed_button_count++;
}
/*-------------------------------------------\
* Functions used by handle_tablet_tool_tip /
*-----------------------------------------*/
static void handle_tablet_tool_tip(struct sway_seat *seat,
struct sway_tablet_tool *tool, uint32_t time_msec,
enum wlr_tablet_tool_tip_state state) {
if (state == WLR_TABLET_TOOL_TIP_UP) {
wlr_tablet_v2_tablet_tool_notify_up(tool->tablet_v2_tool);
return;
}
struct sway_cursor *cursor = seat->cursor;
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_node *node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
if (!sway_assert(surface,
"Expected null-surface tablet input to route through pointer emulation")) {
return;
}
struct sway_container *cont = node && node->type == N_CONTAINER ?
node->sway_container : NULL;
if (wlr_surface_is_layer_surface(surface)) {
// Handle tapping a layer surface
struct wlr_layer_surface_v1 *layer =
wlr_layer_surface_v1_from_wlr_surface(surface);
if (layer->current.keyboard_interactive) {
seat_set_focus_layer(seat, layer);
transaction_commit_dirty();
}
} else if (cont) {
bool is_floating_or_child = container_is_floating_or_child(cont);
bool is_fullscreen_or_child = container_is_fullscreen_or_child(cont);
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat->wlr_seat);
bool mod_pressed = keyboard &&
(wlr_keyboard_get_modifiers(keyboard) & config->floating_mod);
// Handle beginning floating move
if (is_floating_or_child && !is_fullscreen_or_child && mod_pressed) {
seat_set_focus_container(seat,
seat_get_focus_inactive_view(seat, &cont->node));
seatop_begin_move_floating(seat, container_toplevel_ancestor(cont));
return;
}
// Handle moving a tiling container
if (config->tiling_drag && mod_pressed && !is_floating_or_child &&
cont->pending.fullscreen_mode == FULLSCREEN_NONE) {
seatop_begin_move_tiling(seat, cont);
return;
}
// Handle tapping on a container surface
seat_set_focus_container(seat, cont);
seatop_begin_down(seat, node->sway_container, time_msec, sx, sy);
}
#if HAVE_XWAYLAND
// Handle tapping on an xwayland unmanaged view
else if (wlr_surface_is_xwayland_surface(surface)) {
struct wlr_xwayland_surface *xsurface =
wlr_xwayland_surface_from_wlr_surface(surface);
if (xsurface->override_redirect &&
wlr_xwayland_or_surface_wants_focus(xsurface)) {
struct wlr_xwayland *xwayland = server.xwayland.wlr_xwayland;
wlr_xwayland_set_seat(xwayland, seat->wlr_seat);
seat_set_focus_surface(seat, xsurface->surface, false);
transaction_commit_dirty();
}
}
#endif
wlr_tablet_v2_tablet_tool_notify_down(tool->tablet_v2_tool);
wlr_tablet_tool_v2_start_implicit_grab(tool->tablet_v2_tool);
}
/*----------------------------------\
* Functions used by handle_button /
*--------------------------------*/
static bool trigger_pointer_button_binding(struct sway_seat *seat,
struct wlr_input_device *device, uint32_t button,
enum wlr_button_state state, uint32_t modifiers,
bool on_titlebar, bool on_border, bool on_contents, bool on_workspace) {
// We can reach this for non-pointer devices if we're currently emulating
// pointer input for one. Emulated input should not trigger bindings. The
// device can be NULL if this is synthetic (e.g. swaymsg-generated) input.
if (device && device->type != WLR_INPUT_DEVICE_POINTER) {
return false;
}
struct seatop_default_event *e = seat->seatop_data;
char *device_identifier = device ? input_device_get_identifier(device)
: strdup("*");
struct sway_binding *binding = NULL;
if (state == WLR_BUTTON_PRESSED) {
state_add_button(e, button);
binding = get_active_mouse_binding(e,
config->current_mode->mouse_bindings, modifiers, false,
on_titlebar, on_border, on_contents, on_workspace,
device_identifier);
} else {
binding = get_active_mouse_binding(e,
config->current_mode->mouse_bindings, modifiers, true,
on_titlebar, on_border, on_contents, on_workspace,
device_identifier);
state_erase_button(e, button);
}
free(device_identifier);
if (binding) {
seat_execute_command(seat, binding);
return true;
}
return false;
}
static void handle_button(struct sway_seat *seat, uint32_t time_msec,
struct wlr_input_device *device, uint32_t button,
enum wlr_button_state state) {
struct sway_cursor *cursor = seat->cursor;
// Determine what's under the cursor
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_node *node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
struct sway_container *cont = node && node->type == N_CONTAINER ?
node->sway_container : NULL;
bool is_floating = cont && container_is_floating(cont);
bool is_floating_or_child = cont && container_is_floating_or_child(cont);
bool is_fullscreen_or_child = cont && container_is_fullscreen_or_child(cont);
enum wlr_edges edge = cont ? find_edge(cont, surface, cursor) : WLR_EDGE_NONE;
enum wlr_edges resize_edge = cont && edge ?
find_resize_edge(cont, surface, cursor) : WLR_EDGE_NONE;
bool on_border = edge != WLR_EDGE_NONE;
bool on_contents = cont && !on_border && surface;
bool on_workspace = node && node->type == N_WORKSPACE;
bool on_titlebar = cont && !on_border && !surface;
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat->wlr_seat);
uint32_t modifiers = keyboard ? wlr_keyboard_get_modifiers(keyboard) : 0;
// Handle mouse bindings
if (trigger_pointer_button_binding(seat, device, button, state, modifiers,
on_titlebar, on_border, on_contents, on_workspace)) {
return;
}
// Handle clicking an empty workspace
if (node && node->type == N_WORKSPACE) {
if (state == WLR_BUTTON_PRESSED) {
seat_set_focus(seat, node);
transaction_commit_dirty();
}
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
// Handle clicking a layer surface
if (surface && wlr_surface_is_layer_surface(surface)) {
struct wlr_layer_surface_v1 *layer =
wlr_layer_surface_v1_from_wlr_surface(surface);
if (layer->current.keyboard_interactive) {
seat_set_focus_layer(seat, layer);
transaction_commit_dirty();
}
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
// Handle tiling resize via border
if (cont && resize_edge && button == BTN_LEFT &&
state == WLR_BUTTON_PRESSED && !is_floating) {
// If a resize is triggered on a tabbed or stacked container, change
// focus to the tab which already had inactive focus -- otherwise, we'd
// change the active tab when the user probably just wanted to resize.
struct sway_container *cont_to_focus = cont;
enum sway_container_layout layout = container_parent_layout(cont);
if (layout == L_TABBED || layout == L_STACKED) {
cont_to_focus = seat_get_focus_inactive_view(seat, &cont->pending.parent->node);
}
seat_set_focus_container(seat, cont_to_focus);
seatop_begin_resize_tiling(seat, cont, edge);
return;
}
// Handle tiling resize via mod
bool mod_pressed = modifiers & config->floating_mod;
if (cont && !is_floating_or_child && mod_pressed &&
state == WLR_BUTTON_PRESSED) {
uint32_t btn_resize = config->floating_mod_inverse ?
BTN_LEFT : BTN_RIGHT;
if (button == btn_resize) {
edge = 0;
edge |= cursor->cursor->x > cont->pending.x + cont->pending.width / 2 ?
WLR_EDGE_RIGHT : WLR_EDGE_LEFT;
edge |= cursor->cursor->y > cont->pending.y + cont->pending.height / 2 ?
WLR_EDGE_BOTTOM : WLR_EDGE_TOP;
const char *image = NULL;
if (edge == (WLR_EDGE_LEFT | WLR_EDGE_TOP)) {
image = "nw-resize";
} else if (edge == (WLR_EDGE_TOP | WLR_EDGE_RIGHT)) {
image = "ne-resize";
} else if (edge == (WLR_EDGE_RIGHT | WLR_EDGE_BOTTOM)) {
image = "se-resize";
} else if (edge == (WLR_EDGE_BOTTOM | WLR_EDGE_LEFT)) {
image = "sw-resize";
}
cursor_set_image(seat->cursor, image, NULL);
seat_set_focus_container(seat, cont);
seatop_begin_resize_tiling(seat, cont, edge);
return;
}
}
// Handle beginning floating move
if (cont && is_floating_or_child && !is_fullscreen_or_child &&
state == WLR_BUTTON_PRESSED) {
uint32_t btn_move = config->floating_mod_inverse ? BTN_RIGHT : BTN_LEFT;
if (button == btn_move && (mod_pressed || on_titlebar)) {
seat_set_focus_container(seat,
seat_get_focus_inactive_view(seat, &cont->node));
seatop_begin_move_floating(seat, container_toplevel_ancestor(cont));
return;
}
}
// Handle beginning floating resize
if (cont && is_floating_or_child && !is_fullscreen_or_child &&
state == WLR_BUTTON_PRESSED) {
// Via border
if (button == BTN_LEFT && resize_edge != WLR_EDGE_NONE) {
seatop_begin_resize_floating(seat, cont, resize_edge);
return;
}
// Via mod+click
uint32_t btn_resize = config->floating_mod_inverse ?
BTN_LEFT : BTN_RIGHT;
if (mod_pressed && button == btn_resize) {
struct sway_container *floater = container_toplevel_ancestor(cont);
edge = 0;
edge |= cursor->cursor->x > floater->pending.x + floater->pending.width / 2 ?
WLR_EDGE_RIGHT : WLR_EDGE_LEFT;
edge |= cursor->cursor->y > floater->pending.y + floater->pending.height / 2 ?
WLR_EDGE_BOTTOM : WLR_EDGE_TOP;
seatop_begin_resize_floating(seat, floater, edge);
return;
}
}
// Handle moving a tiling container
if (config->tiling_drag && (mod_pressed || on_titlebar) &&
state == WLR_BUTTON_PRESSED && !is_floating_or_child &&
cont && cont->pending.fullscreen_mode == FULLSCREEN_NONE) {
struct sway_container *focus = seat_get_focused_container(seat);
bool focused = focus == cont || container_has_ancestor(focus, cont);
if (on_titlebar && !focused) {
node = seat_get_focus_inactive(seat, &cont->node);
seat_set_focus(seat, node);
}
// If moving a container by it's title bar, use a threshold for the drag
if (!mod_pressed && config->tiling_drag_threshold > 0) {
seatop_begin_move_tiling_threshold(seat, cont);
} else {
seatop_begin_move_tiling(seat, cont);
}
return;
}
// Handle mousedown on a container surface
if (surface && cont && state == WLR_BUTTON_PRESSED) {
seat_set_focus_container(seat, cont);
seatop_begin_down(seat, cont, time_msec, sx, sy);
seat_pointer_notify_button(seat, time_msec, button, WLR_BUTTON_PRESSED);
return;
}
// Handle clicking a container surface or decorations
if (cont && state == WLR_BUTTON_PRESSED) {
node = seat_get_focus_inactive(seat, &cont->node);
seat_set_focus(seat, node);
transaction_commit_dirty();
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
#if HAVE_XWAYLAND
// Handle clicking on xwayland unmanaged view
if (surface && wlr_surface_is_xwayland_surface(surface)) {
struct wlr_xwayland_surface *xsurface =
wlr_xwayland_surface_from_wlr_surface(surface);
if (xsurface->override_redirect &&
wlr_xwayland_or_surface_wants_focus(xsurface)) {
struct wlr_xwayland *xwayland = server.xwayland.wlr_xwayland;
wlr_xwayland_set_seat(xwayland, seat->wlr_seat);
seat_set_focus_surface(seat, xsurface->surface, false);
transaction_commit_dirty();
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
}
#endif
seat_pointer_notify_button(seat, time_msec, button, state);
}
/*------------------------------------------\
* Functions used by handle_pointer_motion /
*----------------------------------------*/
static void check_focus_follows_mouse(struct sway_seat *seat,
struct seatop_default_event *e, struct sway_node *hovered_node) {
struct sway_node *focus = seat_get_focus(seat);
// This is the case if a layer-shell surface is hovered.
// If it's on another output, focus the active workspace there.
if (!hovered_node) {
struct wlr_output *wlr_output = wlr_output_layout_output_at(
root->output_layout, seat->cursor->cursor->x, seat->cursor->cursor->y);
if (wlr_output == NULL) {
return;
}
struct sway_output *hovered_output = wlr_output->data;
if (focus && hovered_output != node_get_output(focus)) {
struct sway_workspace *ws = output_get_active_workspace(hovered_output);
seat_set_focus(seat, &ws->node);
transaction_commit_dirty();
}
return;
}
// If a workspace node is hovered (eg. in the gap area), only set focus if
// the workspace is on a different output to the previous focus.
if (focus && hovered_node->type == N_WORKSPACE) {
struct sway_output *focused_output = node_get_output(focus);
struct sway_output *hovered_output = node_get_output(hovered_node);
if (hovered_output != focused_output) {
seat_set_focus(seat, seat_get_focus_inactive(seat, hovered_node));
transaction_commit_dirty();
}
return;
}
// This is where we handle the common case. We don't want to focus inactive
// tabs, hence the view_is_visible check.
if (node_is_view(hovered_node) &&
view_is_visible(hovered_node->sway_container->view)) {
// e->previous_node is the node which the cursor was over previously.
// If focus_follows_mouse is yes and the cursor got over the view due
// to, say, a workspace switch, we don't want to set the focus.
// But if focus_follows_mouse is "always", we do.
if (hovered_node != e->previous_node ||
config->focus_follows_mouse == FOLLOWS_ALWAYS) {
seat_set_focus(seat, hovered_node);
transaction_commit_dirty();
}
}
}
static void handle_pointer_motion(struct sway_seat *seat, uint32_t time_msec) {
struct seatop_default_event *e = seat->seatop_data;
struct sway_cursor *cursor = seat->cursor;
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_node *node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
if (config->focus_follows_mouse != FOLLOWS_NO) {
check_focus_follows_mouse(seat, e, node);
}
if (surface) {
if (seat_is_input_allowed(seat, surface)) {
wlr_seat_pointer_notify_enter(seat->wlr_seat, surface, sx, sy);
wlr_seat_pointer_notify_motion(seat->wlr_seat, time_msec, sx, sy);
}
} else {
cursor_update_image(cursor, node);
wlr_seat_pointer_notify_clear_focus(seat->wlr_seat);
}
struct sway_drag_icon *drag_icon;
wl_list_for_each(drag_icon, &root->drag_icons, link) {
if (drag_icon->seat == seat) {
drag_icon_update_position(drag_icon);
}
}
e->previous_node = node;
}
static void handle_tablet_tool_motion(struct sway_seat *seat,
struct sway_tablet_tool *tool, uint32_t time_msec) {
struct seatop_default_event *e = seat->seatop_data;
struct sway_cursor *cursor = seat->cursor;
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_node *node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
if (config->focus_follows_mouse != FOLLOWS_NO) {
check_focus_follows_mouse(seat, e, node);
}
if (surface) {
if (seat_is_input_allowed(seat, surface)) {
wlr_tablet_v2_tablet_tool_notify_proximity_in(tool->tablet_v2_tool,
tool->tablet->tablet_v2, surface);
wlr_tablet_v2_tablet_tool_notify_motion(tool->tablet_v2_tool, sx, sy);
}
} else {
cursor_update_image(cursor, node);
wlr_tablet_v2_tablet_tool_notify_proximity_out(tool->tablet_v2_tool);
}
struct sway_drag_icon *drag_icon;
wl_list_for_each(drag_icon, &root->drag_icons, link) {
if (drag_icon->seat == seat) {
drag_icon_update_position(drag_icon);
}
}
e->previous_node = node;
}
/*----------------------------------------\
* Functions used by handle_pointer_axis /
*--------------------------------------*/
static uint32_t wl_axis_to_button(struct wlr_event_pointer_axis *event) {
switch (event->orientation) {
case WLR_AXIS_ORIENTATION_VERTICAL:
return event->delta < 0 ? SWAY_SCROLL_UP : SWAY_SCROLL_DOWN;
case WLR_AXIS_ORIENTATION_HORIZONTAL:
return event->delta < 0 ? SWAY_SCROLL_LEFT : SWAY_SCROLL_RIGHT;
default:
sway_log(SWAY_DEBUG, "Unknown axis orientation");
return 0;
}
}
static void handle_pointer_axis(struct sway_seat *seat,
struct wlr_event_pointer_axis *event) {
struct sway_input_device *input_device =
event->device ? event->device->data : NULL;
struct input_config *ic =
input_device ? input_device_get_config(input_device) : NULL;
struct sway_cursor *cursor = seat->cursor;
struct seatop_default_event *e = seat->seatop_data;
// Determine what's under the cursor
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_node *node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
struct sway_container *cont = node && node->type == N_CONTAINER ?
node->sway_container : NULL;
enum wlr_edges edge = cont ? find_edge(cont, surface, cursor) : WLR_EDGE_NONE;
bool on_border = edge != WLR_EDGE_NONE;
bool on_titlebar = cont && !on_border && !surface;
bool on_titlebar_border = cont && on_border &&
cursor->cursor->y < cont->pending.content_y;
bool on_contents = cont && !on_border && surface;
bool on_workspace = node && node->type == N_WORKSPACE;
float scroll_factor =
(ic == NULL || ic->scroll_factor == FLT_MIN) ? 1.0f : ic->scroll_factor;
bool handled = false;
// Gather information needed for mouse bindings
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat->wlr_seat);
uint32_t modifiers = keyboard ? wlr_keyboard_get_modifiers(keyboard) : 0;
struct wlr_input_device *device =
input_device ? input_device->wlr_device : NULL;
char *dev_id = device ? input_device_get_identifier(device) : strdup("*");
uint32_t button = wl_axis_to_button(event);
// Handle mouse bindings - x11 mouse buttons 4-7 - press event
struct sway_binding *binding = NULL;
state_add_button(e, button);
binding = get_active_mouse_binding(e, config->current_mode->mouse_bindings,
modifiers, false, on_titlebar, on_border, on_contents, on_workspace,
dev_id);
if (binding) {
seat_execute_command(seat, binding);
handled = true;
}
// Scrolling on a tabbed or stacked title bar (handled as press event)
if (!handled && (on_titlebar || on_titlebar_border)) {
enum sway_container_layout layout = container_parent_layout(cont);
if (layout == L_TABBED || layout == L_STACKED) {
struct sway_node *tabcontainer = node_get_parent(node);
struct sway_node *active =
seat_get_active_tiling_child(seat, tabcontainer);
list_t *siblings = container_get_siblings(cont);
int desired = list_find(siblings, active->sway_container) +
round(scroll_factor * event->delta_discrete);
if (desired < 0) {
desired = 0;
} else if (desired >= siblings->length) {
desired = siblings->length - 1;
}
struct sway_container *new_sibling_con = siblings->items[desired];
struct sway_node *new_sibling = &new_sibling_con->node;
struct sway_node *new_focus =
seat_get_focus_inactive(seat, new_sibling);
// Use the focused child of the tabbed/stacked container, not the
// container the user scrolled on.
seat_set_focus(seat, new_focus);
transaction_commit_dirty();
handled = true;
}
}
// Handle mouse bindings - x11 mouse buttons 4-7 - release event
binding = get_active_mouse_binding(e, config->current_mode->mouse_bindings,
modifiers, true, on_titlebar, on_border, on_contents, on_workspace,
dev_id);
state_erase_button(e, button);
if (binding) {
seat_execute_command(seat, binding);
handled = true;
}
free(dev_id);
if (!handled) {
wlr_seat_pointer_notify_axis(cursor->seat->wlr_seat, event->time_msec,
event->orientation, scroll_factor * event->delta,
round(scroll_factor * event->delta_discrete), event->source);
}
}
static uint32_t swipe_button_base(uint8_t fingers) {
if (fingers == 3) {
return SWAY_SWIPE_3;
} else if (fingers == 4) {
return SWAY_SWIPE_4;
}
return 0;
}
static void handle_swipe_begin(struct sway_seat *seat,
struct wlr_event_pointer_swipe_begin *event) {
struct sway_input_device *input_device =
event->device ? event->device->data : NULL;
struct sway_cursor *cursor = seat->cursor;
struct seatop_default_event *e = seat->seatop_data;
// Determine what's under the cursor
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_node *node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
struct sway_container *cont = node && node->type == N_CONTAINER ?
node->sway_container : NULL;
enum wlr_edges edge = cont ? find_edge(cont, surface, cursor) : WLR_EDGE_NONE;
bool on_border = edge != WLR_EDGE_NONE;
bool on_titlebar = cont && !on_border && !surface;
bool on_contents = cont && !on_border && surface;
bool on_workspace = node && node->type == N_WORKSPACE;
bool handled = false;
// Gather information needed for mouse bindings
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat->wlr_seat);
uint32_t modifiers = keyboard ? wlr_keyboard_get_modifiers(keyboard) : 0;
struct wlr_input_device *device =
input_device ? input_device->wlr_device : NULL;
char *dev_id = device ? input_device_get_identifier(device) : strdup("*");
// zero for both turns below loop into a no-op
uint32_t button_base = swipe_button_base(event->fingers);
uint32_t button_end = 0;
if (button_base != 0) {
button_end = button_base + SWAY_SWIPE_DIR_COUNT;
}
/**
* Handle mouse bindings - if there's any swipe bindings for this
* context. Here we must swallow all swipes if there's even one
* possible binding because we have no way of knowing yet what kind of
* swipe this is going to be. It's in the nature of the thing because
* the user may turn a left into an upwards swipe mid-way. For the same
* reason it makes no sense to execute any binding here. So we defer it
* to swipe release. We can break as soon as it's confirmed that there
* is at least one binding.
*/
struct sway_binding *binding = NULL;
for (uint32_t button = button_base; button < button_end; button++) {
state_add_button(e, button);
// check for an on-press binding
binding = get_active_mouse_binding(e,
config->current_mode->mouse_bindings,
modifiers, false, on_titlebar, on_border,
on_contents, on_workspace, dev_id);
if (!binding) {
// see if there's an on-release binding instead
binding = get_active_mouse_binding(e,
config->current_mode->mouse_bindings,
modifiers, true, on_titlebar,
on_border, on_contents, on_workspace,
dev_id);
}
state_erase_button(e, button);
if (binding) {
handled = true;
break;
}
}
if (handled) {
// mark this as ours and start tracking
e->swiping = true;
e->swipe_fingers = event->fingers;
e->swipe_travel_x = 0;
e->swipe_travel_y = 0;
}
free(dev_id);
if (!handled) {
wlr_pointer_gestures_v1_send_swipe_begin(
cursor->pointer_gestures, cursor->seat->wlr_seat,
event->time_msec, event->fingers);
}
}
static void handle_swipe_update(struct sway_seat *seat,
struct wlr_event_pointer_swipe_update *event) {
struct seatop_default_event *e = seat->seatop_data;
// is this ours?
if (e->swiping) {
// libinput does not do this. Instead the current swipe is
// cancelled and a new one started. But better be safe.
if (e->swipe_fingers != event->fingers) {
sway_log(SWAY_DEBUG, "Ignoring changed finger count mid-swipe");
return;
}
e->swipe_travel_x += event->dx;
e->swipe_travel_y += event->dy;
return;
}
struct sway_cursor *cursor = seat->cursor;
wlr_pointer_gestures_v1_send_swipe_update(
cursor->pointer_gestures,
cursor->seat->wlr_seat,
event->time_msec, event->dx, event->dy);
}
static uint32_t swipe_to_button(struct seatop_default_event *event) {
uint8_t direction;
if (fabs(event->swipe_travel_x) > fabs(event->swipe_travel_y)) {
if (event->swipe_travel_x > 0) {
direction = SWAY_SWIPE_DIR_RIGHT;
} else {
direction = SWAY_SWIPE_DIR_LEFT;
}
} else {
if (event->swipe_travel_y > 0) {
direction = SWAY_SWIPE_DIR_DOWN;
} else {
direction = SWAY_SWIPE_DIR_UP;
}
}
uint32_t button_base = swipe_button_base(event->swipe_fingers);
return button_base + direction;
}
static void handle_swipe_end(struct sway_seat *seat,
struct wlr_event_pointer_swipe_end *event) {
struct sway_cursor *cursor = seat->cursor;
struct seatop_default_event *e = seat->seatop_data;
if (!e->swiping) {
wlr_pointer_gestures_v1_send_swipe_end(
cursor->pointer_gestures, cursor->seat->wlr_seat,
event->time_msec, event->cancelled);
return;
}
e->swiping = false;
// can happen when changing finger count mid-swipe or swiping off the
// tracking surface (touchpad)
if (event->cancelled) {
return;
}
struct sway_input_device *input_device =
event->device ? event->device->data : NULL;
// Determine what's under the cursor
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_node *node = node_at_coords(seat, cursor->cursor->x,
cursor->cursor->y, &surface, &sx, &sy);
struct sway_container *cont = node && node->type == N_CONTAINER ?
node->sway_container : NULL;
enum wlr_edges edge = cont ? find_edge(cont, surface, cursor) :
WLR_EDGE_NONE;
bool on_border = edge != WLR_EDGE_NONE;
bool on_titlebar = cont && !on_border && !surface;
bool on_contents = cont && !on_border && surface;
bool on_workspace = node && node->type == N_WORKSPACE;
// Gather information needed for mouse bindings
struct wlr_keyboard *keyboard =
wlr_seat_get_keyboard(seat->wlr_seat);
uint32_t modifiers = keyboard ?
wlr_keyboard_get_modifiers(keyboard) : 0;
struct wlr_input_device *device =
input_device ? input_device->wlr_device : NULL;
char *dev_id = device ? input_device_get_identifier(device) :
strdup("*");
uint32_t button = swipe_to_button(e);
// Prefer any on-press binding because we did not execute it on gesture
// start because we could not know what gesture it would become. Ignore
// on-release binding on success.
state_add_button(e, button);
struct sway_binding *binding = get_active_mouse_binding(e,
config->current_mode->mouse_bindings, modifiers, false,
on_titlebar, on_border, on_contents, on_workspace,
dev_id);
if (!binding) {
binding = get_active_mouse_binding(e,
config->current_mode->mouse_bindings,
modifiers, true, on_titlebar, on_border,
on_contents, on_workspace, dev_id);
}
state_erase_button(e, button);
if (binding) {
seat_execute_command(seat, binding);
}
free(dev_id);
}
/*----------------------------------\
* Functions used by handle_rebase /
*--------------------------------*/
static void handle_rebase(struct sway_seat *seat, uint32_t time_msec) {
struct seatop_default_event *e = seat->seatop_data;
struct sway_cursor *cursor = seat->cursor;
struct wlr_surface *surface = NULL;
double sx = 0.0, sy = 0.0;
e->previous_node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
if (surface) {
if (seat_is_input_allowed(seat, surface)) {
wlr_seat_pointer_notify_enter(seat->wlr_seat, surface, sx, sy);
wlr_seat_pointer_notify_motion(seat->wlr_seat, time_msec, sx, sy);
}
} else {
cursor_update_image(cursor, e->previous_node);
wlr_seat_pointer_notify_clear_focus(seat->wlr_seat);
}
}
static const struct sway_seatop_impl seatop_impl = {
.button = handle_button,
.pointer_motion = handle_pointer_motion,
.pointer_axis = handle_pointer_axis,
.tablet_tool_tip = handle_tablet_tool_tip,
.tablet_tool_motion = handle_tablet_tool_motion,
.swipe_begin = handle_swipe_begin,
.swipe_update = handle_swipe_update,
.swipe_end = handle_swipe_end,
.rebase = handle_rebase,
.allow_set_cursor = true,
};
void seatop_begin_default(struct sway_seat *seat) {
seatop_end(seat);
struct seatop_default_event *e =
calloc(1, sizeof(struct seatop_default_event));
sway_assert(e, "Unable to allocate seatop_default_event");
seat->seatop_impl = &seatop_impl;
seat->seatop_data = e;
seatop_rebase(seat, 0);
}
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