swayfx/sway/input/seatop_default.c

642 lines
20 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <float.h>
#include <libevdev/libevdev.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_xcursor_manager.h>
#include "sway/input/cursor.h"
#include "sway/input/seat.h"
#include "sway/tree/view.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;
};
/*-----------------------------------------\
* 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->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->border == B_NONE || !cont->border_thickness ||
cont->border == B_CSD) {
return WLR_EDGE_NONE;
}
enum wlr_edges edge = 0;
if (cursor->cursor->x < cont->x + cont->border_thickness) {
edge |= WLR_EDGE_LEFT;
}
if (cursor->cursor->y < cont->y + cont->border_thickness) {
edge |= WLR_EDGE_TOP;
}
if (cursor->cursor->x >= cont->x + cont->width - cont->border_thickness) {
edge |= WLR_EDGE_RIGHT;
}
if (cursor->cursor->y >= cont->y + cont->height - cont->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.
*/
static 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++;
}
static void cursor_do_rebase(struct sway_cursor *cursor, uint32_t time_msec,
struct sway_node *node, struct wlr_surface *surface,
double sx, double sy) {
struct wlr_seat *wlr_seat = cursor->seat->wlr_seat;
if (surface) {
if (seat_is_input_allowed(cursor->seat, surface)) {
wlr_seat_pointer_notify_enter(wlr_seat, surface, sx, sy);
}
} else if (node && node->type == N_CONTAINER) {
// Try a node's resize edge
enum wlr_edges edge = find_resize_edge(node->sway_container, surface, cursor);
if (edge == WLR_EDGE_NONE) {
cursor_set_image(cursor, "left_ptr", NULL);
} else if (container_is_floating(node->sway_container)) {
cursor_set_image(cursor, wlr_xcursor_get_resize_name(edge), NULL);
} else {
if (edge & (WLR_EDGE_LEFT | WLR_EDGE_RIGHT)) {
cursor_set_image(cursor, "col-resize", NULL);
} else {
cursor_set_image(cursor, "row-resize", NULL);
}
}
} else {
cursor_set_image(cursor, "left_ptr", NULL);
}
if (surface == NULL) {
wlr_seat_pointer_clear_focus(wlr_seat);
}
}
/*----------------------------------\
* Functions used by handle_button /
*--------------------------------*/
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 seatop_default_event *e = seat->seatop_data;
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;
// Handle mouse bindings
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat->wlr_seat);
uint32_t modifiers = keyboard ? wlr_keyboard_get_modifiers(keyboard) : 0;
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;
}
// Handle clicking an empty workspace
if (node && node->type == N_WORKSPACE) {
seat_set_focus(seat, node);
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);
}
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) {
seat_set_focus_container(seat, cont);
seatop_begin_resize_tiling(seat, cont, edge);
return;
}
// Handle tiling resize via mod
bool mod_pressed = keyboard &&
(wlr_keyboard_get_modifiers(keyboard) & 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->x + cont->width / 2 ?
WLR_EDGE_RIGHT : WLR_EDGE_LEFT;
edge |= cursor->cursor->y > cont->y + cont->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)) {
while (cont->parent) {
cont = cont->parent;
}
seat_set_focus_container(seat, cont);
seatop_begin_move_floating(seat, 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 = cont;
while (floater->parent) {
floater = floater->parent;
}
edge = 0;
edge |= cursor->cursor->x > floater->x + floater->width / 2 ?
WLR_EDGE_RIGHT : WLR_EDGE_LEFT;
edge |= cursor->cursor->y > floater->y + floater->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->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);
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);
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
}
#endif
seat_pointer_notify_button(seat, time_msec, button, state);
}
/*----------------------------------\
* Functions used by handle_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);
// 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));
}
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);
}
}
}
static void handle_motion(struct sway_seat *seat, uint32_t time_msec,
double dx, double dy) {
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 (node && config->focus_follows_mouse != FOLLOWS_NO) {
check_focus_follows_mouse(seat, e, node);
}
cursor_do_rebase(cursor, time_msec, node, surface, sx, sy);
if (surface && seat_is_input_allowed(cursor->seat, surface)) {
wlr_seat_pointer_notify_motion(seat->wlr_seat, time_msec, sx, sy);
}
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_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_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->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_node *old_focus = seat_get_focus(seat);
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);
if (node_has_ancestor(old_focus, tabcontainer)) {
seat_set_focus(seat, new_focus);
} else {
// Scrolling when focus is not in the tabbed container at all
seat_set_raw_focus(seat, new_sibling);
seat_set_raw_focus(seat, new_focus);
seat_set_raw_focus(seat, old_focus);
}
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);
}
}
/*----------------------------------\
* 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);
cursor_do_rebase(cursor, time_msec, e->previous_node, surface, sx, sy);
}
static const struct sway_seatop_impl seatop_impl = {
.button = handle_button,
.motion = handle_motion,
.axis = handle_axis,
.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);
}