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swayfx/sway/input/cursor.c
Ryan Dwyer 7586f150c0 Implement type safe arguments and demote sway_container 
This commit changes the meaning of sway_container so that it only refers
to layout containers and view containers. Workspaces, outputs and the
root are no longer known as containers. Instead, root, outputs,
workspaces and containers are all a type of node, and containers come in
two types: layout containers and view containers.

In addition to the above, this implements type safe variables. This
means we use specific types such as sway_output and sway_workspace
instead of generic containers or nodes. However, it's worth noting that
in a few places places (eg. seat focus and transactions) referring to
them in a generic way is unavoidable which is why we still use nodes in
some places.

If you want a TL;DR, look at node.h, as well as the struct definitions
for root, output, workspace and container. Note that sway_output now
contains a workspaces list, and workspaces now contain a tiling and
floating list, and containers now contain a pointer back to the
workspace.

There are now functions for seat_get_focused_workspace and
seat_get_focused_container. The latter will return NULL if a workspace
itself is focused. Most other seat functions like seat_get_focus and
seat_set_focus now accept and return nodes.

In the config->handler_context struct, current_container has been
replaced with three pointers: node, container and workspace. node is the
same as what current_container was, while workspace is the workspace
that the node resides on and container is the actual container, which
may be NULL if a workspace itself is focused.

The global root_container variable has been replaced with one simply
called root, which is a pointer to the sway_root instance.

The way outputs are created, enabled, disabled and destroyed has
changed. Previously we'd wrap the sway_output in a container when it is
enabled, but as we don't have containers any more it needs a different
approach. The output_create and output_destroy functions previously
created/destroyed the container, but now they create/destroy the
sway_output. There is a new function output_disable to disable an output
without destroying it.

Containers have a new view property. If this is populated then the
container is a view container, otherwise it's a layout container. Like
before, this property is immutable for the life of the container.

Containers have both a `sway_container *parent` and
`sway_workspace *workspace`. As we use specific types now, parent cannot
point to a workspace so it'll be NULL for containers which are direct
children of the workspace. The workspace property is set for all
containers, except those which are hidden in the scratchpad as they have
no workspace.

In some cases we need to refer to workspaces in a container-like way.
For example, workspaces have layout and children, but when using
specific types this makes it difficult. Likewise, it's difficult for a
container to get its parent's layout when the parent could be another
container or a workspace. To make it easier, some helper functions have
been created: container_parent_layout and container_get_siblings.

container_remove_child has been renamed to container_detach and
container_replace_child has been renamed to container_replace.

`container_handle_fullscreen_reparent(con, old_parent)` has had the
old_parent removed. We now unfullscreen the workspace when detaching the
container, so this function is simplified and only needs one argument
now.

container_notify_subtree_changed has been renamed to
container_update_representation. This is more descriptive of its
purpose. I also wanted to be able to call it with whatever container was
changed rather than the container's parent, which makes bubbling up to
the workspace easier.

There are now state structs per node thing. ie. sway_output_state,
sway_workspace_state and sway_container_state.

The focus, move and layout commands have been completely refactored to
work with the specific types. I considered making these a separate PR,
but I'd be backporting my changes only to replace them again, and it's
easier just to test everything at once.
2018-09-05 18:01:43 +10:00

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#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 "config.h"
#include "sway/commands.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/container.h"
#include "sway/tree/root.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 node 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_node *node_at_coords(
struct sway_seat *seat, double lx, double ly,
struct wlr_surface **surface, double *sx, double *sy) {
// check for unmanaged views first
#ifdef HAVE_XWAYLAND
struct wl_list *unmanaged = &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;
}
}
#endif
// find the output the cursor is on
struct wlr_output *wlr_output = wlr_output_layout_output_at(
root->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(root->output_layout, wlr_output, &ox, &oy);
// find the focused workspace on the output for this seat
struct sway_workspace *ws = output_get_active_workspace(output);
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
ox, oy, sx, sy))) {
return &ws->node;
}
if (ws->fullscreen) {
struct sway_container *con =
tiling_container_at(&ws->fullscreen->node, lx, ly, surface, sx, sy);
if (con) {
return &con->node;
}
return NULL;
}
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
ox, oy, sx, sy))) {
return &ws->node;
}
struct sway_container *c;
if ((c = container_at(ws, lx, ly, surface, sx, sy))) {
return &c->node;
}
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
ox, oy, sx, sy))) {
return &ws->node;
}
if ((*surface = layer_surface_at(output,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
ox, oy, sx, sy))) {
return &ws->node;
}
return &ws->node;
}
static struct sway_container *container_at_coords(struct sway_seat *seat,
double lx, double ly,
struct wlr_surface **surface, double *sx, double *sy) {
struct sway_node *node = node_at_coords(seat, lx, ly, surface, sx, sy);
if (node && node->type == N_CONTAINER) {
return node->sway_container;
}
return NULL;
}
/**
* 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 sway_cursor *cursor) {
if (!cont->view) {
return WLR_EDGE_NONE;
}
struct sway_view *view = cont->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;
}
/**
* 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 sway_cursor *cursor) {
enum wlr_edges edge = find_edge(cont, cursor);
if (edge && !container_is_floating(cont) && edge_is_external(cont, edge)) {
return WLR_EDGE_NONE;
}
return edge;
}
static void handle_down_motion(struct sway_seat *seat,
struct sway_cursor *cursor, uint32_t time_msec) {
struct sway_container *con = seat->op_container;
if (seat_is_input_allowed(seat, con->view->surface)) {
double moved_x = cursor->cursor->x - seat->op_ref_lx;
double moved_y = cursor->cursor->y - seat->op_ref_ly;
double sx = seat->op_ref_con_lx + moved_x;
double sy = seat->op_ref_con_ly + moved_y;
wlr_seat_pointer_notify_motion(seat->wlr_seat, time_msec, sx, sy);
}
seat->op_moved = true;
}
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
*max_width = con->workspace->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
*max_height = con->workspace->height;
} else {
*max_height = config->floating_maximum_height;
}
}
static void handle_resize_floating_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->view) {
double view_min_width, view_max_width, view_min_height, view_max_height;
view_get_constraints(con->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->view) {
struct sway_view *view = con->view;
view->x += relative_grow_x;
view->y += relative_grow_y;
view->width += relative_grow_width;
view->height += relative_grow_height;
}
arrange_container(con);
}
static void handle_resize_tiling_motion(struct sway_seat *seat,
struct sway_cursor *cursor) {
int amount_x = 0;
int amount_y = 0;
int moved_x = cursor->cursor->x - seat->op_ref_lx;
int moved_y = cursor->cursor->y - seat->op_ref_ly;
enum wlr_edges edge_x = WLR_EDGE_NONE;
enum wlr_edges edge_y = WLR_EDGE_NONE;
struct sway_container *con = seat->op_container;
if (seat->op_resize_edge & WLR_EDGE_TOP) {
amount_y = (seat->op_ref_height - moved_y) - con->height;
edge_y = WLR_EDGE_TOP;
} else if (seat->op_resize_edge & WLR_EDGE_BOTTOM) {
amount_y = (seat->op_ref_height + moved_y) - con->height;
edge_y = WLR_EDGE_BOTTOM;
}
if (seat->op_resize_edge & WLR_EDGE_LEFT) {
amount_x = (seat->op_ref_width - moved_x) - con->width;
edge_x = WLR_EDGE_LEFT;
} else if (seat->op_resize_edge & WLR_EDGE_RIGHT) {
amount_x = (seat->op_ref_width + moved_x) - con->width;
edge_x = WLR_EDGE_RIGHT;
}
if (amount_x != 0) {
container_resize_tiled(seat->op_container, edge_x, amount_x);
}
if (amount_y != 0) {
container_resize_tiled(seat->op_container, edge_y, amount_y);
}
}
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) {
switch (seat->operation) {
case OP_DOWN:
handle_down_motion(seat, cursor, time_msec);
break;
case OP_MOVE:
handle_move_motion(seat, cursor);
break;
case OP_RESIZE_FLOATING:
handle_resize_floating_motion(seat, cursor);
break;
case OP_RESIZE_TILING:
handle_resize_tiling_motion(seat, cursor);
break;
case OP_NONE:
break;
}
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 node beneath the pointer's previous position
struct sway_node *prev_node = node_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_node *node = node_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
if (node && config->focus_follows_mouse && allow_refocusing) {
struct sway_node *focus = seat_get_focus(seat);
if (focus && node->type == N_WORKSPACE) {
// Only follow the mouse if it would move to a new output
// Otherwise we'll focus the workspace, which is probably wrong
struct sway_output *focused_output = node_get_output(focus);
struct sway_output *output = node_get_output(node);
if (output != focused_output) {
seat_set_focus_warp(seat, node, false, true);
}
} else if (node->type == N_CONTAINER && node->sway_container->view) {
// Focus node 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) &&
node != prev_node &&
view_is_visible(node->sway_container->view)) {
seat_set_focus_warp(seat, node, false, true);
} else {
struct sway_node *next_focus =
seat_get_focus_inactive(seat, &root->node);
if (next_focus && next_focus->type == N_CONTAINER &&
node->sway_container->view &&
view_is_visible(next_focus->sway_container->view)) {
seat_set_focus_warp(seat, next_focus, false, true);
}
}
}
}
// 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 (node && node->type == N_CONTAINER) {
// Try a node's resize edge
enum wlr_edges edge = find_resize_edge(node->sway_container, 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);
}
// 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();
}
/**
* 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 (time_msec == 0) {
time_msec = get_current_time_msec();
}
struct sway_seat *seat = cursor->seat;
// Handle ending seat operation
if (cursor->seat->operation != OP_NONE &&
button == cursor->seat->op_button && state == WLR_BUTTON_RELEASED) {
seat_end_mouse_operation(seat);
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
// Determine what's under the cursor
struct wlr_surface *surface = NULL;
double sx, sy;
struct sway_container *cont = container_at_coords(seat,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
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, cursor) : WLR_EDGE_NONE;
enum wlr_edges resize_edge = edge ?
find_resize_edge(cont, cursor) : WLR_EDGE_NONE;
bool on_border = edge != WLR_EDGE_NONE;
bool on_contents = cont && !on_border && surface;
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;
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(seat, binding);
return;
}
// Handle clicking a layer surface
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(seat, layer);
}
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
// Handle tiling resize via border
if (resize_edge && button == BTN_LEFT && state == WLR_BUTTON_PRESSED &&
!is_floating) {
seat_set_focus(seat, &cont->node);
seat_begin_resize_tiling(seat, cont, button, edge);
return;
}
// Handle tiling resize via mod
bool mod_pressed = keyboard &&
(wlr_keyboard_get_modifiers(keyboard) & config->floating_mod);
if (!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(seat, &cont->node);
seat_begin_resize_tiling(seat, cont, button, edge);
return;
}
}
// Handle beginning floating move
if (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 && state == WLR_BUTTON_PRESSED &&
(mod_pressed || on_titlebar)) {
while (cont->parent) {
cont = cont->parent;
}
seat_begin_move(seat, cont, button);
return;
}
}
// Handle beginning floating resize
if (is_floating_or_child && !is_fullscreen_or_child &&
state == WLR_BUTTON_PRESSED) {
// Via border
if (button == BTN_LEFT && resize_edge != WLR_EDGE_NONE) {
seat_begin_resize_floating(seat, cont, button, 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;
seat_begin_resize_floating(seat, floater, button, edge);
return;
}
}
// Handle mousedown on a container surface
if (surface && cont && state == WLR_BUTTON_PRESSED) {
seat_set_focus(seat, &cont->node);
seat_pointer_notify_button(seat, time_msec, button, state);
seat_begin_down(seat, cont, button, sx, sy);
return;
}
// Handle clicking a container surface
if (cont) {
seat_set_focus(seat, &cont->node);
seat_pointer_notify_button(seat, time_msec, button, state);
return;
}
seat_pointer_notify_button(seat, time_msec, button, state);
}
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);
transaction_commit_dirty();
}
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);
transaction_commit_dirty();
}
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;
}
transaction_commit_dirty();
}
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->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;
}
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