wlroots/rootston/cursor.c

367 lines
11 KiB
C

#define _XOPEN_SOURCE 700
#include <stdlib.h>
#include <math.h>
#ifdef __linux__
#include <linux/input-event-codes.h>
#elif __FreeBSD__
#include <dev/evdev/input-event-codes.h>
#endif
#include <wlr/util/log.h>
#include "rootston/xcursor.h"
#include "rootston/cursor.h"
struct roots_cursor *roots_cursor_create(struct roots_seat *seat) {
struct roots_cursor *cursor = calloc(1, sizeof(struct roots_cursor));
if (!cursor) {
return NULL;
}
cursor->cursor = wlr_cursor_create();
if (!cursor->cursor) {
return NULL;
}
return cursor;
}
void roots_cursor_destroy(struct roots_cursor *cursor) {
// TODO
}
static void cursor_set_xcursor_image(struct roots_cursor *cursor,
struct wlr_xcursor_image *image) {
wlr_cursor_set_image(cursor->cursor, image->buffer, image->width,
image->width, image->height, image->hotspot_x, image->hotspot_y);
}
static void roots_cursor_update_position(struct roots_cursor *cursor, uint32_t time) {
struct roots_desktop *desktop = cursor->seat->input->server->desktop;
struct roots_seat *seat = cursor->seat;
struct roots_view *view;
struct wlr_surface *surface;
double sx, sy;
switch (cursor->mode) {
case ROOTS_CURSOR_PASSTHROUGH:
view = view_at(desktop, cursor->cursor->x, cursor->cursor->y,
&surface, &sx, &sy);
bool set_compositor_cursor = !view && cursor->cursor_client;
if (view) {
struct wl_client *view_client =
wl_resource_get_client(view->wlr_surface->resource);
set_compositor_cursor = view_client != cursor->cursor_client;
}
if (set_compositor_cursor) {
struct wlr_xcursor *xcursor = get_default_xcursor(cursor->xcursor_theme);
cursor_set_xcursor_image(cursor, xcursor->images[0]);
cursor->cursor_client = NULL;
}
if (view) {
wlr_seat_pointer_notify_enter(seat->seat, surface, sx, sy);
wlr_seat_pointer_notify_motion(seat->seat, time, sx, sy);
} else {
wlr_seat_pointer_clear_focus(seat->seat);
}
break;
case ROOTS_CURSOR_MOVE:
if (seat->focus) {
double dx = cursor->cursor->x - cursor->offs_x;
double dy = cursor->cursor->y - cursor->offs_y;
view_move(seat->focus, cursor->view_x + dx,
cursor->view_y + dy);
}
break;
case ROOTS_CURSOR_RESIZE:
if (seat->focus) {
double dx = cursor->cursor->x - cursor->offs_x;
double dy = cursor->cursor->y - cursor->offs_y;
double active_x = seat->focus->x;
double active_y = seat->focus->y;
int width = cursor->view_width;
int height = cursor->view_height;
if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_TOP) {
active_y = cursor->view_y + dy;
height -= dy;
if (height < 0) {
active_y += height;
}
} else if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_BOTTOM) {
height += dy;
}
if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_LEFT) {
active_x = cursor->view_x + dx;
width -= dx;
if (width < 0) {
active_x += width;
}
} else if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_RIGHT) {
width += dx;
}
if (width < 0) {
width = 0;
}
if (height < 0) {
height = 0;
}
if (active_x != seat->focus->x ||
active_y != seat->focus->y) {
view_move_resize(seat->focus, active_x, active_y,
width, height);
} else {
view_resize(seat->focus, width, height);
}
}
break;
case ROOTS_CURSOR_ROTATE:
if (seat->focus) {
struct roots_view *view = seat->focus;
int ox = view->x + view->wlr_surface->current->width/2,
oy = view->y + view->wlr_surface->current->height/2;
int ux = cursor->offs_x - ox,
uy = cursor->offs_y - oy;
int vx = cursor->cursor->x - ox,
vy = cursor->cursor->y - oy;
float angle = atan2(vx*uy - vy*ux, vx*ux + vy*uy);
int steps = 12;
angle = round(angle/M_PI*steps) / (steps/M_PI);
view->rotation = cursor->view_rotation + angle;
}
break;
}
}
static void roots_cursor_press_button(struct roots_cursor *cursor,
struct wlr_input_device *device, uint32_t time, uint32_t button,
uint32_t state) {
struct roots_seat *seat = cursor->seat;
struct roots_desktop *desktop = seat->input->server->desktop;
struct wlr_surface *surface;
double sx, sy;
struct roots_view *view = view_at(desktop,
cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
if (state == WLR_BUTTON_PRESSED && view && roots_seat_has_meta_pressed(seat)) {
roots_seat_focus_view(seat, view);
uint32_t edges;
switch (button) {
case BTN_LEFT:
roots_seat_begin_move(seat, view);
break;
case BTN_RIGHT:
edges = 0;
if (sx < view->wlr_surface->current->width/2) {
edges |= ROOTS_CURSOR_RESIZE_EDGE_LEFT;
} else {
edges |= ROOTS_CURSOR_RESIZE_EDGE_RIGHT;
}
if (sy < view->wlr_surface->current->height/2) {
edges |= ROOTS_CURSOR_RESIZE_EDGE_TOP;
} else {
edges |= ROOTS_CURSOR_RESIZE_EDGE_BOTTOM;
}
roots_seat_begin_resize(seat, view, edges);
break;
case BTN_MIDDLE:
roots_seat_begin_rotate(seat, view);
break;
}
return;
}
uint32_t serial =
wlr_seat_pointer_notify_button(seat->seat, time, button, state);
int i;
switch (state) {
case WLR_BUTTON_RELEASED:
seat->cursor->mode = ROOTS_CURSOR_PASSTHROUGH;
roots_cursor_update_position(cursor, time);
break;
case WLR_BUTTON_PRESSED:
i = cursor->input_events_idx;
cursor->input_events[i].serial = serial;
cursor->input_events[i].cursor = cursor->cursor;
cursor->input_events[i].device = device;
cursor->input_events_idx = (i + 1)
% (sizeof(cursor->input_events) / sizeof(cursor->input_events[0]));
roots_seat_focus_view(seat, view);
break;
}
}
void roots_cursor_handle_motion(struct roots_cursor *cursor,
struct wlr_event_pointer_motion *event) {
wlr_cursor_move(cursor->cursor, event->device,
event->delta_x, event->delta_y);
roots_cursor_update_position(cursor, event->time_msec);
}
void roots_cursor_handle_motion_absolute(struct roots_cursor *cursor,
struct wlr_event_pointer_motion_absolute *event) {
wlr_cursor_warp_absolute(cursor->cursor, event->device,
event->x_mm / event->width_mm, event->y_mm / event->height_mm);
roots_cursor_update_position(cursor, event->time_msec);
}
void roots_cursor_handle_button(struct roots_cursor *cursor,
struct wlr_event_pointer_button *event) {
roots_cursor_press_button(cursor, event->device, event->time_msec,
event->button, event->state);
}
void roots_cursor_handle_axis(struct roots_cursor *cursor,
struct wlr_event_pointer_axis *event) {
wlr_seat_pointer_notify_axis(cursor->seat->seat, event->time_msec,
event->orientation, event->delta);
}
void roots_cursor_handle_touch_down(struct roots_cursor *cursor,
struct wlr_event_touch_down *event) {
struct roots_touch_point *point =
calloc(1, sizeof(struct roots_touch_point));
if (!point) {
wlr_log(L_ERROR, "could not allocate memory for touch point");
return;
}
point->device = event->device->data;
point->slot = event->slot;
point->x = event->x_mm / event->width_mm;
point->y = event->y_mm / event->height_mm;
wlr_cursor_warp_absolute(cursor->cursor, event->device, point->x, point->y);
roots_cursor_update_position(cursor, event->time_msec);
wl_list_insert(&cursor->touch_points, &point->link);
roots_cursor_press_button(cursor, event->device,
event->time_msec, BTN_LEFT, 1);
}
void roots_cursor_handle_touch_up(struct roots_cursor *cursor,
struct wlr_event_touch_up *event) {
struct roots_touch_point *point;
wl_list_for_each(point, &cursor->touch_points, link) {
if (point->slot == event->slot) {
wl_list_remove(&point->link);
free(point);
break;
}
}
roots_cursor_press_button(cursor, event->device,
event->time_msec, BTN_LEFT, 0);
}
void roots_cursor_handle_touch_motion(struct roots_cursor *cursor,
struct wlr_event_touch_motion *event) {
struct roots_touch_point *point;
wl_list_for_each(point, &cursor->touch_points, link) {
if (point->slot == event->slot) {
point->x = event->x_mm / event->width_mm;
point->y = event->y_mm / event->height_mm;
wlr_cursor_warp_absolute(cursor->cursor, event->device,
point->x, point->y);
roots_cursor_update_position(cursor, event->time_msec);
break;
}
}
}
void roots_cursor_handle_tool_axis(struct roots_cursor *cursor,
struct wlr_event_tablet_tool_axis *event) {
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) &&
(event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
wlr_cursor_warp_absolute(cursor->cursor, event->device,
event->x_mm / event->width_mm, event->y_mm / event->height_mm);
roots_cursor_update_position(cursor, event->time_msec);
}
}
void roots_cursor_handle_tool_tip(struct roots_cursor *cursor,
struct wlr_event_tablet_tool_tip *event) {
roots_cursor_press_button(cursor, event->device,
event->time_msec, BTN_LEFT, event->state);
}
void roots_cursor_handle_request_set_cursor(struct roots_cursor *cursor,
struct wlr_seat_pointer_request_set_cursor_event *event) {
struct wlr_surface *focused_surface =
event->seat_client->seat->pointer_state.focused_surface;
bool has_focused = focused_surface != NULL && focused_surface->resource != NULL;
struct wl_client *focused_client = NULL;
if (has_focused) {
focused_client = wl_resource_get_client(focused_surface->resource);
}
if (event->seat_client->client != focused_client ||
cursor->mode != ROOTS_CURSOR_PASSTHROUGH) {
wlr_log(L_DEBUG, "Denying request to set cursor from unfocused client");
return;
}
wlr_log(L_DEBUG, "Setting client cursor");
wlr_cursor_set_surface(cursor->cursor, event->surface, event->hotspot_x,
event->hotspot_y);
cursor->cursor_client = event->seat_client->client;
}
static void handle_drag_icon_commit(struct wl_listener *listener, void *data) {
struct roots_drag_icon *drag_icon =
wl_container_of(listener, drag_icon, surface_commit);
drag_icon->sx += drag_icon->surface->current->sx;
drag_icon->sy += drag_icon->surface->current->sy;
}
static void handle_drag_icon_destroy(struct wl_listener *listener, void *data) {
struct roots_drag_icon *drag_icon =
wl_container_of(listener, drag_icon, surface_destroy);
wl_list_remove(&drag_icon->link);
wl_list_remove(&drag_icon->surface_destroy.link);
wl_list_remove(&drag_icon->surface_commit.link);
free(drag_icon);
}
void roots_cursor_handle_pointer_grab_begin(struct roots_cursor *cursor,
struct wlr_seat_pointer_grab *grab) {
struct roots_seat *seat = cursor->seat;
if (grab->interface == &wlr_data_device_pointer_drag_interface) {
struct wlr_drag *drag = grab->data;
if (drag->icon) {
struct roots_drag_icon *iter_icon;
wl_list_for_each(iter_icon, &seat->drag_icons, link) {
if (iter_icon->surface == drag->icon) {
// already in the list
return;
}
}
struct roots_drag_icon *drag_icon =
calloc(1, sizeof(struct roots_drag_icon));
drag_icon->mapped = true;
drag_icon->surface = drag->icon;
wl_list_insert(&seat->drag_icons, &drag_icon->link);
wl_signal_add(&drag->icon->events.destroy,
&drag_icon->surface_destroy);
drag_icon->surface_destroy.notify = handle_drag_icon_destroy;
wl_signal_add(&drag->icon->events.commit,
&drag_icon->surface_commit);
drag_icon->surface_commit.notify = handle_drag_icon_commit;
}
}
}
void roots_cursor_handle_pointer_grab_end(struct roots_cursor *cursor,
struct wlr_seat_pointer_grab *grab) {
if (grab->interface == &wlr_data_device_pointer_drag_interface) {
struct wlr_drag *drag = grab->data;
struct roots_drag_icon *icon;
wl_list_for_each(icon, &cursor->seat->drag_icons, link) {
if (icon->surface == drag->icon) {
icon->mapped = false;
}
}
}
roots_cursor_update_position(cursor, 0);
}