sway/sway/input/cursor.c
2018-07-24 21:12:24 +10:00

925 lines
30 KiB
C

#define _XOPEN_SOURCE 700
#include <math.h>
#ifdef __linux__
#include <linux/input-event-codes.h>
#elif __FreeBSD__
#include <dev/evdev/input-event-codes.h>
#endif
#include <limits.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_xcursor_manager.h>
#include <wlr/types/wlr_idle.h>
#include "list.h"
#include "log.h"
#include "sway/desktop.h"
#include "sway/desktop/transaction.h"
#include "sway/input/cursor.h"
#include "sway/input/keyboard.h"
#include "sway/layers.h"
#include "sway/output.h"
#include "sway/tree/arrange.h"
#include "sway/tree/view.h"
#include "sway/tree/workspace.h"
#include "wlr-layer-shell-unstable-v1-protocol.h"
static uint32_t get_current_time_msec() {
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
return now.tv_nsec / 1000;
}
static struct wlr_surface *layer_surface_at(struct sway_output *output,
struct wl_list *layer, double ox, double oy, double *sx, double *sy) {
struct sway_layer_surface *sway_layer;
wl_list_for_each_reverse(sway_layer, layer, link) {
struct wlr_surface *wlr_surface =
sway_layer->layer_surface->surface;
double _sx = ox - sway_layer->geo.x;
double _sy = oy - sway_layer->geo.y;
// TODO: Test popups/subsurfaces
if (wlr_surface_point_accepts_input(wlr_surface, _sx, _sy)) {
*sx = _sx;
*sy = _sy;
return wlr_surface;
}
}
return NULL;
}
/**
* Returns the container at the cursor's position. If there is a surface at that
* location, it is stored in **surface (it may not be a view).
*/
static struct sway_container *container_at_coords(
struct sway_seat *seat, double lx, double ly,
struct wlr_surface **surface, double *sx, double *sy) {
// check for unmanaged views first
struct wl_list *unmanaged = &root_container.sway_root->xwayland_unmanaged;
struct sway_xwayland_unmanaged *unmanaged_surface;
wl_list_for_each_reverse(unmanaged_surface, unmanaged, link) {
struct wlr_xwayland_surface *xsurface =
unmanaged_surface->wlr_xwayland_surface;
double _sx = lx - unmanaged_surface->lx;
double _sy = ly - unmanaged_surface->ly;
if (wlr_surface_point_accepts_input(xsurface->surface, _sx, _sy)) {
*surface = xsurface->surface;
*sx = _sx;
*sy = _sy;
return NULL;
}
}
// find the output the cursor is on
struct wlr_output_layout *output_layout =
root_container.sway_root->output_layout;
struct wlr_output *wlr_output = wlr_output_layout_output_at(
output_layout, lx, ly);
if (wlr_output == NULL) {
return NULL;
}
struct sway_output *output = wlr_output->data;
double ox = lx, oy = ly;
wlr_output_layout_output_coords(output_layout, wlr_output, &ox, &oy);
// find the focused workspace on the output for this seat
struct sway_container *ws = seat_get_focus_inactive(seat, output->swayc);
if (ws && ws->type != C_WORKSPACE) {
ws = container_parent(ws, C_WORKSPACE);
}
if (!ws) {
return output->swayc;
}
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
ox, oy, sx, sy))) {
return ws;
}
if (ws->sway_workspace->fullscreen) {
struct wlr_surface *wlr_surface = ws->sway_workspace->fullscreen->surface;
if (wlr_surface_point_accepts_input(wlr_surface, ox, oy)) {
*sx = ox;
*sy = oy;
*surface = wlr_surface;
return ws->sway_workspace->fullscreen->swayc;
}
return NULL;
}
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
ox, oy, sx, sy))) {
return ws;
}
struct sway_container *c;
if ((c = floating_container_at(lx, ly, surface, sx, sy))) {
return c;
}
if ((c = container_at(ws, lx, ly, surface, sx, sy))) {
return c;
}
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
ox, oy, sx, sy))) {
return ws;
}
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
ox, oy, sx, sy))) {
return ws;
}
c = seat_get_active_child(seat, output->swayc);
if (c) {
return c;
}
if (!c && output->swayc->children->length) {
c = output->swayc->children->items[0];
return c;
}
return output->swayc;
}
static enum wlr_edges find_resize_edge(struct sway_container *cont,
struct sway_cursor *cursor) {
if (cont->type != C_VIEW) {
return WLR_EDGE_NONE;
}
struct sway_view *view = cont->sway_view;
if (view->border == B_NONE || !view->border_thickness || view->using_csd) {
return WLR_EDGE_NONE;
}
enum wlr_edges edge = 0;
if (cursor->cursor->x < cont->x + view->border_thickness) {
edge |= WLR_EDGE_LEFT;
}
if (cursor->cursor->y < cont->y + view->border_thickness) {
edge |= WLR_EDGE_TOP;
}
if (cursor->cursor->x >= cont->x + cont->width - view->border_thickness) {
edge |= WLR_EDGE_RIGHT;
}
if (cursor->cursor->y >= cont->y + cont->height - view->border_thickness) {
edge |= WLR_EDGE_BOTTOM;
}
return edge;
}
static void handle_move_motion(struct sway_seat *seat,
struct sway_cursor *cursor) {
struct sway_container *con = seat->op_container;
desktop_damage_whole_container(con);
container_floating_translate(con,
cursor->cursor->x - cursor->previous.x,
cursor->cursor->y - cursor->previous.y);
desktop_damage_whole_container(con);
}
static void calculate_floating_constraints(struct sway_container *con,
int *min_width, int *max_width, int *min_height, int *max_height) {
if (config->floating_minimum_width == -1) { // no minimum
*min_width = 0;
} else if (config->floating_minimum_width == 0) { // automatic
*min_width = 75;
} else {
*min_width = config->floating_minimum_width;
}
if (config->floating_minimum_height == -1) { // no minimum
*min_height = 0;
} else if (config->floating_minimum_height == 0) { // automatic
*min_height = 50;
} else {
*min_height = config->floating_minimum_height;
}
if (config->floating_maximum_width == -1) { // no maximum
*max_width = INT_MAX;
} else if (config->floating_maximum_width == 0) { // automatic
struct sway_container *ws = container_parent(con, C_WORKSPACE);
*max_width = ws->width;
} else {
*max_width = config->floating_maximum_width;
}
if (config->floating_maximum_height == -1) { // no maximum
*max_height = INT_MAX;
} else if (config->floating_maximum_height == 0) { // automatic
struct sway_container *ws = container_parent(con, C_WORKSPACE);
*max_height = ws->height;
} else {
*max_height = config->floating_maximum_height;
}
}
static void handle_resize_motion(struct sway_seat *seat,
struct sway_cursor *cursor) {
struct sway_container *con = seat->op_container;
enum wlr_edges edge = seat->op_resize_edge;
// The amount the mouse has moved since the start of the resize operation
// Positive is down/right
double mouse_move_x = cursor->cursor->x - seat->op_ref_lx;
double mouse_move_y = cursor->cursor->y - seat->op_ref_ly;
if (edge == WLR_EDGE_TOP || edge == WLR_EDGE_BOTTOM) {
mouse_move_x = 0;
}
if (edge == WLR_EDGE_LEFT || edge == WLR_EDGE_RIGHT) {
mouse_move_y = 0;
}
double grow_width = edge & WLR_EDGE_LEFT ? -mouse_move_x : mouse_move_x;
double grow_height = edge & WLR_EDGE_TOP ? -mouse_move_y : mouse_move_y;
if (seat->op_resize_preserve_ratio) {
double x_multiplier = grow_width / seat->op_ref_width;
double y_multiplier = grow_height / seat->op_ref_height;
double max_multiplier = fmax(x_multiplier, y_multiplier);
grow_width = seat->op_ref_width * max_multiplier;
grow_height = seat->op_ref_height * max_multiplier;
}
// Determine new width/height, and accommodate for floating min/max values
double width = seat->op_ref_width + grow_width;
double height = seat->op_ref_height + grow_height;
int min_width, max_width, min_height, max_height;
calculate_floating_constraints(con, &min_width, &max_width,
&min_height, &max_height);
width = fmax(min_width, fmin(width, max_width));
height = fmax(min_height, fmin(height, max_height));
// Apply the view's min/max size
if (con->type == C_VIEW) {
double view_min_width, view_max_width, view_min_height, view_max_height;
view_get_constraints(con->sway_view, &view_min_width, &view_max_width,
&view_min_height, &view_max_height);
width = fmax(view_min_width, fmin(width, view_max_width));
height = fmax(view_min_height, fmin(height, view_max_height));
}
// Recalculate these, in case we hit a min/max limit
grow_width = width - seat->op_ref_width;
grow_height = height - seat->op_ref_height;
// Determine grow x/y values - these are relative to the container's x/y at
// the start of the resize operation.
double grow_x = 0, grow_y = 0;
if (edge & WLR_EDGE_LEFT) {
grow_x = -grow_width;
} else if (edge & WLR_EDGE_RIGHT) {
grow_x = 0;
} else {
grow_x = -grow_width / 2;
}
if (edge & WLR_EDGE_TOP) {
grow_y = -grow_height;
} else if (edge & WLR_EDGE_BOTTOM) {
grow_y = 0;
} else {
grow_y = -grow_height / 2;
}
// Determine the amounts we need to bump everything relative to the current
// size.
int relative_grow_width = width - con->width;
int relative_grow_height = height - con->height;
int relative_grow_x = (seat->op_ref_con_lx + grow_x) - con->x;
int relative_grow_y = (seat->op_ref_con_ly + grow_y) - con->y;
// Actually resize stuff
con->x += relative_grow_x;
con->y += relative_grow_y;
con->width += relative_grow_width;
con->height += relative_grow_height;
if (con->type == C_VIEW) {
struct sway_view *view = con->sway_view;
view->x += relative_grow_x;
view->y += relative_grow_y;
view->width += relative_grow_width;
view->height += relative_grow_height;
}
arrange_windows(con);
}
void cursor_send_pointer_motion(struct sway_cursor *cursor, uint32_t time_msec,
bool allow_refocusing) {
if (time_msec == 0) {
time_msec = get_current_time_msec();
}
struct sway_seat *seat = cursor->seat;
if (seat->operation != OP_NONE) {
if (seat->operation == OP_MOVE) {
handle_move_motion(seat, cursor);
} else {
handle_resize_motion(seat, cursor);
}
cursor->previous.x = cursor->cursor->x;
cursor->previous.y = cursor->cursor->y;
return;
}
struct wlr_seat *wlr_seat = seat->wlr_seat;
struct wlr_surface *surface = NULL;
double sx, sy;
// Find the container beneath the pointer's previous position
struct sway_container *prev_c = container_at_coords(seat,
cursor->previous.x, cursor->previous.y, &surface, &sx, &sy);
// Update the stored previous position
cursor->previous.x = cursor->cursor->x;
cursor->previous.y = cursor->cursor->y;
struct sway_container *c = container_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
if (c && config->focus_follows_mouse && allow_refocusing) {
struct sway_container *focus = seat_get_focus(seat);
if (focus && c->type == C_WORKSPACE) {
// Only follow the mouse if it would move to a new output
// Otherwise we'll focus the workspace, which is probably wrong
if (focus->type != C_OUTPUT) {
focus = container_parent(focus, C_OUTPUT);
}
struct sway_container *output = c;
if (output->type != C_OUTPUT) {
output = container_parent(c, C_OUTPUT);
}
if (output != focus) {
seat_set_focus_warp(seat, c, false);
}
} else if (c->type == C_VIEW) {
// Focus c if the following are true:
// - cursor is over a new view, i.e. entered a new window; and
// - the new view is visible, i.e. not hidden in a stack or tab; and
// - the seat does not have a keyboard grab
if (!wlr_seat_keyboard_has_grab(cursor->seat->wlr_seat) &&
c != prev_c &&
view_is_visible(c->sway_view)) {
seat_set_focus_warp(seat, c, false);
} else {
struct sway_container *next_focus =
seat_get_focus_inactive(seat, &root_container);
if (next_focus && next_focus->type == C_VIEW &&
view_is_visible(next_focus->sway_view)) {
seat_set_focus_warp(seat, next_focus, false);
}
}
}
}
// Handle cursor image
if (surface) {
// Reset cursor if switching between clients
struct wl_client *client = wl_resource_get_client(surface->resource);
if (client != cursor->image_client) {
cursor_set_image(cursor, "left_ptr", client);
}
} else if (c && container_is_floating(c)) {
// Try a floating container's resize edge
enum wlr_edges edge = find_resize_edge(c, cursor);
const char *image = edge == WLR_EDGE_NONE ?
"left_ptr" : wlr_xcursor_get_resize_name(edge);
cursor_set_image(cursor, image, NULL);
} else {
cursor_set_image(cursor, "left_ptr", NULL);
}
// send pointer enter/leave
if (surface != NULL) {
if (seat_is_input_allowed(seat, surface)) {
wlr_seat_pointer_notify_enter(wlr_seat, surface, sx, sy);
wlr_seat_pointer_notify_motion(wlr_seat, time_msec, sx, sy);
}
} else {
wlr_seat_pointer_clear_focus(wlr_seat);
}
struct wlr_drag_icon *wlr_drag_icon;
wl_list_for_each(wlr_drag_icon, &wlr_seat->drag_icons, link) {
struct sway_drag_icon *drag_icon = wlr_drag_icon->data;
drag_icon_update_position(drag_icon);
}
}
static void handle_cursor_motion(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, motion);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_pointer_motion *event = data;
wlr_cursor_move(cursor->cursor, event->device,
event->delta_x, event->delta_y);
cursor_send_pointer_motion(cursor, event->time_msec, true);
transaction_commit_dirty();
}
static void handle_cursor_motion_absolute(
struct wl_listener *listener, void *data) {
struct sway_cursor *cursor =
wl_container_of(listener, cursor, motion_absolute);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_pointer_motion_absolute *event = data;
wlr_cursor_warp_absolute(cursor->cursor, event->device, event->x, event->y);
cursor_send_pointer_motion(cursor, event->time_msec, true);
transaction_commit_dirty();
}
static void dispatch_cursor_button_floating(struct sway_cursor *cursor,
uint32_t time_msec, uint32_t button, enum wlr_button_state state,
struct wlr_surface *surface, double sx, double sy,
struct sway_container *cont) {
struct sway_seat *seat = cursor->seat;
// Deny moving or resizing a fullscreen view
if (cont->type == C_VIEW && cont->sway_view->is_fullscreen) {
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat->wlr_seat);
bool mod_pressed = keyboard &&
(wlr_keyboard_get_modifiers(keyboard) & config->floating_mod);
enum wlr_edges edge = find_resize_edge(cont, cursor);
bool over_title = edge == WLR_EDGE_NONE && !surface;
// Check for beginning move
if (button == BTN_LEFT && state == WLR_BUTTON_PRESSED &&
(mod_pressed || over_title)) {
seat_begin_move(seat, cont, BTN_LEFT);
return;
}
// Check for beginning resize
bool resizing_via_border = button == BTN_LEFT && edge != WLR_EDGE_NONE;
bool resizing_via_mod = button == BTN_RIGHT && mod_pressed;
if ((resizing_via_border || resizing_via_mod) &&
state == WLR_BUTTON_PRESSED) {
if (edge == WLR_EDGE_NONE) {
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;
}
seat_begin_resize(seat, cont, button, edge);
return;
}
// Send event to surface
seat_set_focus(seat, cont);
seat_pointer_notify_button(seat, time_msec, button, state);
}
/**
* Remove a button (and duplicates) to the sorted list of currently pressed buttons
*/
static void state_erase_button(struct sway_cursor *cursor, uint32_t button) {
size_t j = 0;
for (size_t i = 0; i < cursor->pressed_button_count; ++i) {
if (i > j) {
cursor->pressed_buttons[j] = cursor->pressed_buttons[i];
}
if (cursor->pressed_buttons[i] != button) {
++j;
}
}
while (cursor->pressed_button_count > j) {
--cursor->pressed_button_count;
cursor->pressed_buttons[cursor->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 sway_cursor *cursor, uint32_t button) {
if (cursor->pressed_button_count >= SWAY_CURSOR_PRESSED_BUTTONS_CAP) {
return;
}
size_t i = 0;
while (i < cursor->pressed_button_count && cursor->pressed_buttons[i] < button) {
++i;
}
size_t j = cursor->pressed_button_count;
while (j > i) {
cursor->pressed_buttons[j] = cursor->pressed_buttons[j - 1];
--j;
}
cursor->pressed_buttons[i] = button;
cursor->pressed_button_count++;
}
/**
* 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(const struct sway_cursor *cursor,
list_t *bindings, uint32_t modifiers, bool release, bool on_titlebar,
bool on_border, bool on_content) {
uint32_t click_region = (on_titlebar ? BINDING_TITLEBAR : 0) |
(on_border ? BINDING_BORDER : 0) |
(on_content ? BINDING_CONTENTS : 0);
for (int i = 0; i < bindings->length; ++i) {
struct sway_binding *binding = bindings->items[i];
if (modifiers ^ binding->modifiers ||
cursor->pressed_button_count != (size_t)binding->keys->length ||
release != (binding->flags & BINDING_RELEASE) ||
!(click_region & binding->flags)) {
continue;
}
bool match = true;
for (size_t j = 0; j < cursor->pressed_button_count; j++) {
uint32_t key = *(uint32_t *)binding->keys->items[j];
if (key != cursor->pressed_buttons[j]) {
match = false;
break;
}
}
if (!match) {
continue;
}
return binding;
}
return NULL;
}
void dispatch_cursor_button(struct sway_cursor *cursor,
uint32_t time_msec, uint32_t button, enum wlr_button_state state) {
if (cursor->seat->operation != OP_NONE &&
button == cursor->seat->op_button && state == WLR_BUTTON_RELEASED) {
seat_end_mouse_operation(cursor->seat);
seat_pointer_notify_button(cursor->seat, time_msec, button, state);
return;
}
if (time_msec == 0) {
time_msec = get_current_time_msec();
}
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_container *cont = container_at_coords(cursor->seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
// Handle mouse bindings
bool on_border = cont && (find_resize_edge(cont, cursor) != WLR_EDGE_NONE);
bool on_contents = !on_border && surface;
bool on_titlebar = !on_border && !surface;
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(cursor->seat->wlr_seat);
uint32_t modifiers = keyboard ? wlr_keyboard_get_modifiers(keyboard) : 0;
struct sway_binding *binding = NULL;
if (state == WLR_BUTTON_PRESSED) {
state_add_button(cursor, button);
binding = get_active_mouse_binding(cursor,
config->current_mode->mouse_bindings, modifiers, false,
on_titlebar, on_border, on_contents);
} else {
binding = get_active_mouse_binding(cursor,
config->current_mode->mouse_bindings, modifiers, true,
on_titlebar, on_border, on_contents);
state_erase_button(cursor, button);
}
if (binding) {
seat_execute_command(cursor->seat, binding);
// TODO: do we want to pass on the event?
}
if (surface && wlr_surface_is_layer_surface(surface)) {
struct wlr_layer_surface *layer =
wlr_layer_surface_from_wlr_surface(surface);
if (layer->current.keyboard_interactive) {
seat_set_focus_layer(cursor->seat, layer);
}
seat_pointer_notify_button(cursor->seat, time_msec, button, state);
} else if (cont && container_is_floating(cont)) {
dispatch_cursor_button_floating(cursor, time_msec, button, state,
surface, sx, sy, cont);
} else if (surface && cont && cont->type != C_VIEW) {
// Avoid moving keyboard focus from a surface that accepts it to one
// that does not unless the change would move us to a new workspace.
//
// This prevents, for example, losing focus when clicking on swaybar.
struct sway_container *new_ws = cont;
if (new_ws && new_ws->type != C_WORKSPACE) {
new_ws = container_parent(new_ws, C_WORKSPACE);
}
struct sway_container *old_ws = seat_get_focus(cursor->seat);
if (old_ws && old_ws->type != C_WORKSPACE) {
old_ws = container_parent(old_ws, C_WORKSPACE);
}
if (new_ws != old_ws) {
seat_set_focus(cursor->seat, cont);
}
seat_pointer_notify_button(cursor->seat, time_msec, button, state);
} else if (cont) {
seat_set_focus(cursor->seat, cont);
seat_pointer_notify_button(cursor->seat, time_msec, button, state);
} else {
seat_pointer_notify_button(cursor->seat, time_msec, button, state);
}
transaction_commit_dirty();
}
static void handle_cursor_button(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, button);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_pointer_button *event = data;
dispatch_cursor_button(cursor,
event->time_msec, event->button, event->state);
}
static void handle_cursor_axis(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, axis);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_pointer_axis *event = data;
wlr_seat_pointer_notify_axis(cursor->seat->wlr_seat, event->time_msec,
event->orientation, event->delta, event->delta_discrete, event->source);
}
static void handle_touch_down(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, touch_down);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_touch_down *event = data;
struct sway_seat *seat = cursor->seat;
struct wlr_seat *wlr_seat = seat->wlr_seat;
struct wlr_surface *surface = NULL;
double lx, ly;
wlr_cursor_absolute_to_layout_coords(cursor->cursor, event->device,
event->x, event->y, &lx, &ly);
double sx, sy;
container_at_coords(seat, lx, ly, &surface, &sx, &sy);
seat->touch_id = event->touch_id;
seat->touch_x = lx;
seat->touch_y = ly;
if (!surface) {
return;
}
// TODO: fall back to cursor simulation if client has not bound to touch
if (seat_is_input_allowed(seat, surface)) {
wlr_seat_touch_notify_down(wlr_seat, surface, event->time_msec,
event->touch_id, sx, sy);
cursor->image_client = NULL;
wlr_cursor_set_image(cursor->cursor, NULL, 0, 0, 0, 0, 0, 0);
}
}
static void handle_touch_up(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, touch_up);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_touch_up *event = data;
struct wlr_seat *seat = cursor->seat->wlr_seat;
// TODO: fall back to cursor simulation if client has not bound to touch
wlr_seat_touch_notify_up(seat, event->time_msec, event->touch_id);
}
static void handle_touch_motion(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor =
wl_container_of(listener, cursor, touch_motion);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_touch_motion *event = data;
struct sway_seat *seat = cursor->seat;
struct wlr_seat *wlr_seat = seat->wlr_seat;
struct wlr_surface *surface = NULL;
double lx, ly;
wlr_cursor_absolute_to_layout_coords(cursor->cursor, event->device,
event->x, event->y, &lx, &ly);
double sx, sy;
container_at_coords(cursor->seat, lx, ly, &surface, &sx, &sy);
if (seat->touch_id == event->touch_id) {
seat->touch_x = lx;
seat->touch_y = ly;
struct wlr_drag_icon *wlr_drag_icon;
wl_list_for_each(wlr_drag_icon, &wlr_seat->drag_icons, link) {
struct sway_drag_icon *drag_icon = wlr_drag_icon->data;
drag_icon_update_position(drag_icon);
}
}
if (!surface) {
return;
}
// TODO: fall back to cursor simulation if client has not bound to touch
if (seat_is_input_allowed(cursor->seat, surface)) {
wlr_seat_touch_notify_motion(wlr_seat, event->time_msec,
event->touch_id, sx, sy);
}
}
static double apply_mapping_from_coord(double low, double high, double value) {
if (isnan(value)) {
return value;
}
return (value - low) / (high - low);
}
static void apply_mapping_from_region(struct wlr_input_device *device,
struct input_config_mapped_from_region *region, double *x, double *y) {
double x1 = region->x1, x2 = region->x2;
double y1 = region->y1, y2 = region->y2;
if (region->mm) {
if (device->width_mm == 0 || device->height_mm == 0) {
return;
}
x1 /= device->width_mm;
x2 /= device->width_mm;
y1 /= device->height_mm;
y2 /= device->height_mm;
}
*x = apply_mapping_from_coord(x1, x2, *x);
*y = apply_mapping_from_coord(y1, y2, *y);
}
static void handle_tool_axis(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, tool_axis);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_tablet_tool_axis *event = data;
struct sway_input_device *input_device = event->device->data;
double x = NAN, y = NAN;
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X)) {
x = event->x;
}
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
y = event->y;
}
struct input_config *ic = input_device_get_config(input_device);
if (ic != NULL && ic->mapped_from_region != NULL) {
apply_mapping_from_region(event->device, ic->mapped_from_region, &x, &y);
}
wlr_cursor_warp_absolute(cursor->cursor, event->device, x, y);
cursor_send_pointer_motion(cursor, event->time_msec, true);
transaction_commit_dirty();
}
static void handle_tool_tip(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, tool_tip);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_tablet_tool_tip *event = data;
dispatch_cursor_button(cursor, event->time_msec,
BTN_LEFT, event->state == WLR_TABLET_TOOL_TIP_DOWN ?
WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED);
}
static void handle_tool_button(struct wl_listener *listener, void *data) {
struct sway_cursor *cursor = wl_container_of(listener, cursor, tool_button);
wlr_idle_notify_activity(cursor->seat->input->server->idle, cursor->seat->wlr_seat);
struct wlr_event_tablet_tool_button *event = data;
// TODO: the user may want to configure which tool buttons are mapped to
// which simulated pointer buttons
switch (event->state) {
case WLR_BUTTON_PRESSED:
if (cursor->tool_buttons == 0) {
dispatch_cursor_button(cursor,
event->time_msec, BTN_RIGHT, event->state);
}
cursor->tool_buttons++;
break;
case WLR_BUTTON_RELEASED:
if (cursor->tool_buttons == 1) {
dispatch_cursor_button(cursor,
event->time_msec, BTN_RIGHT, event->state);
}
cursor->tool_buttons--;
break;
}
}
static void handle_request_set_cursor(struct wl_listener *listener,
void *data) {
struct sway_cursor *cursor =
wl_container_of(listener, cursor, request_set_cursor);
if (cursor->seat->operation != OP_NONE) {
return;
}
struct wlr_seat_pointer_request_set_cursor_event *event = data;
struct wl_client *focused_client = NULL;
struct wlr_surface *focused_surface =
cursor->seat->wlr_seat->pointer_state.focused_surface;
if (focused_surface != NULL) {
focused_client = wl_resource_get_client(focused_surface->resource);
}
// TODO: check cursor mode
if (focused_client == NULL ||
event->seat_client->client != focused_client) {
wlr_log(WLR_DEBUG, "denying request to set cursor from unfocused client");
return;
}
wlr_cursor_set_surface(cursor->cursor, event->surface, event->hotspot_x,
event->hotspot_y);
cursor->image = NULL;
cursor->image_client = focused_client;
}
void cursor_set_image(struct sway_cursor *cursor, const char *image,
struct wl_client *client) {
if (!cursor->image || strcmp(cursor->image, image) != 0) {
wlr_xcursor_manager_set_cursor_image(cursor->xcursor_manager, image,
cursor->cursor);
cursor->image = image;
}
cursor->image_client = client;
}
void sway_cursor_destroy(struct sway_cursor *cursor) {
if (!cursor) {
return;
}
wlr_xcursor_manager_destroy(cursor->xcursor_manager);
wlr_cursor_destroy(cursor->cursor);
free(cursor);
}
struct sway_cursor *sway_cursor_create(struct sway_seat *seat) {
struct sway_cursor *cursor = calloc(1, sizeof(struct sway_cursor));
if (!sway_assert(cursor, "could not allocate sway cursor")) {
return NULL;
}
struct wlr_cursor *wlr_cursor = wlr_cursor_create();
if (!sway_assert(wlr_cursor, "could not allocate wlr cursor")) {
free(cursor);
return NULL;
}
cursor->previous.x = wlr_cursor->x;
cursor->previous.y = wlr_cursor->y;
cursor->seat = seat;
wlr_cursor_attach_output_layout(wlr_cursor,
root_container.sway_root->output_layout);
// input events
wl_signal_add(&wlr_cursor->events.motion, &cursor->motion);
cursor->motion.notify = handle_cursor_motion;
wl_signal_add(&wlr_cursor->events.motion_absolute,
&cursor->motion_absolute);
cursor->motion_absolute.notify = handle_cursor_motion_absolute;
wl_signal_add(&wlr_cursor->events.button, &cursor->button);
cursor->button.notify = handle_cursor_button;
wl_signal_add(&wlr_cursor->events.axis, &cursor->axis);
cursor->axis.notify = handle_cursor_axis;
wl_signal_add(&wlr_cursor->events.touch_down, &cursor->touch_down);
cursor->touch_down.notify = handle_touch_down;
wl_signal_add(&wlr_cursor->events.touch_up, &cursor->touch_up);
cursor->touch_up.notify = handle_touch_up;
wl_signal_add(&wlr_cursor->events.touch_motion,
&cursor->touch_motion);
cursor->touch_motion.notify = handle_touch_motion;
// TODO: tablet protocol support
// Note: We should emulate pointer events for clients that don't support the
// tablet protocol when the time comes
wl_signal_add(&wlr_cursor->events.tablet_tool_axis,
&cursor->tool_axis);
cursor->tool_axis.notify = handle_tool_axis;
wl_signal_add(&wlr_cursor->events.tablet_tool_tip, &cursor->tool_tip);
cursor->tool_tip.notify = handle_tool_tip;
wl_signal_add(&wlr_cursor->events.tablet_tool_button, &cursor->tool_button);
cursor->tool_button.notify = handle_tool_button;
wl_signal_add(&seat->wlr_seat->events.request_set_cursor,
&cursor->request_set_cursor);
cursor->request_set_cursor.notify = handle_request_set_cursor;
cursor->cursor = wlr_cursor;
return cursor;
}