wlroots/rootston/desktop.c

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C
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#define _POSIX_C_SOURCE 199309L
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#include <assert.h>
#include <time.h>
#include <stdlib.h>
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#include <math.h>
#include <wlr/config.h>
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#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_compositor.h>
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#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_gamma_control.h>
#include <wlr/types/wlr_primary_selection.h>
#include <wlr/types/wlr_server_decoration.h>
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#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_wl_shell.h>
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#include <wlr/types/wlr_xcursor_manager.h>
#include <wlr/types/wlr_xdg_shell_v6.h>
#include <wlr/util/log.h>
#include "rootston/server.h"
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#include "rootston/seat.h"
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#include "rootston/xcursor.h"
void view_get_box(const struct roots_view *view, struct wlr_box *box) {
box->x = view->x;
box->y = view->y;
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if (view->get_size) {
view->get_size(view, box);
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} else {
box->width = view->wlr_surface->current->width;
box->height = view->wlr_surface->current->height;
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}
}
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static void view_update_output(const struct roots_view *view,
const struct wlr_box *before) {
struct roots_desktop *desktop = view->desktop;
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struct roots_output *output;
struct wlr_box box;
view_get_box(view, &box);
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wl_list_for_each(output, &desktop->outputs, link) {
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bool intersected = before != NULL && wlr_output_layout_intersects(
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desktop->layout, output->wlr_output, before);
bool intersects = wlr_output_layout_intersects(desktop->layout,
output->wlr_output, &box);
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if (intersected && !intersects) {
wlr_surface_send_leave(view->wlr_surface, output->wlr_output);
}
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if (!intersected && intersects) {
wlr_surface_send_enter(view->wlr_surface, output->wlr_output);
}
}
}
void view_move(struct roots_view *view, double x, double y) {
if (view->x == x && view->y == y) {
return;
}
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struct wlr_box before;
view_get_box(view, &before);
if (view->move) {
view->move(view, x, y);
} else {
view->x = x;
view->y = y;
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}
view_update_output(view, &before);
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}
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void view_activate(struct roots_view *view, bool activate) {
if (view->activate) {
view->activate(view, activate);
}
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}
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void view_resize(struct roots_view *view, uint32_t width, uint32_t height) {
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struct wlr_box before;
view_get_box(view, &before);
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if (view->resize) {
view->resize(view, width, height);
}
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view_update_output(view, &before);
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}
void view_move_resize(struct roots_view *view, double x, double y,
uint32_t width, uint32_t height) {
bool update_x = x != view->x;
bool update_y = y != view->y;
if (!update_x && !update_y) {
view_resize(view, width, height);
return;
}
if (view->move_resize) {
view->move_resize(view, x, y, width, height);
return;
}
view->pending_move_resize.update_x = update_x;
view->pending_move_resize.update_y = update_y;
view->pending_move_resize.x = x;
view->pending_move_resize.y = y;
view->pending_move_resize.width = width;
view->pending_move_resize.height = height;
view_resize(view, width, height);
}
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static struct wlr_output *view_get_output(struct roots_view *view) {
struct wlr_box view_box;
view_get_box(view, &view_box);
double output_x, output_y;
wlr_output_layout_closest_point(view->desktop->layout, NULL,
view->x + (double)view_box.width/2,
view->y + (double)view_box.height/2,
&output_x, &output_y);
return wlr_output_layout_output_at(view->desktop->layout, output_x,
output_y);
}
void view_maximize(struct roots_view *view, bool maximized) {
if (view->maximized == maximized) {
return;
}
if (view->maximize) {
view->maximize(view, maximized);
}
if (!view->maximized && maximized) {
struct wlr_box view_box;
view_get_box(view, &view_box);
view->maximized = true;
view->saved.x = view->x;
view->saved.y = view->y;
view->saved.rotation = view->rotation;
view->saved.width = view_box.width;
view->saved.height = view_box.height;
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struct wlr_output *output = view_get_output(view);
struct wlr_box *output_box =
wlr_output_layout_get_box(view->desktop->layout, output);
view_move_resize(view, output_box->x, output_box->y, output_box->width,
output_box->height);
view->rotation = 0;
}
if (view->maximized && !maximized) {
view->maximized = false;
view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
view->saved.height);
view->rotation = view->saved.rotation;
}
}
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void view_set_fullscreen(struct roots_view *view, bool fullscreen,
struct wlr_output *output) {
bool was_fullscreen = view->fullscreen_output != NULL;
if (was_fullscreen == fullscreen) {
// TODO: support changing the output?
return;
}
// TODO: check if client is focused?
if (view->set_fullscreen) {
view->set_fullscreen(view, fullscreen);
}
if (!was_fullscreen && fullscreen) {
if (output == NULL) {
output = view_get_output(view);
}
struct roots_output *roots_output =
desktop_output_from_wlr_output(view->desktop, output);
if (roots_output == NULL) {
return;
}
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struct wlr_box view_box;
view_get_box(view, &view_box);
view->saved.x = view->x;
view->saved.y = view->y;
view->saved.rotation = view->rotation;
view->saved.width = view_box.width;
view->saved.height = view_box.height;
struct wlr_box *output_box =
wlr_output_layout_get_box(view->desktop->layout, output);
view_move_resize(view, output_box->x, output_box->y, output_box->width,
output_box->height);
view->rotation = 0;
roots_output->fullscreen_view = view;
view->fullscreen_output = roots_output;
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}
if (was_fullscreen && !fullscreen) {
view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
view->saved.height);
view->rotation = view->saved.rotation;
view->fullscreen_output->fullscreen_view = NULL;
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view->fullscreen_output = NULL;
}
}
void view_close(struct roots_view *view) {
if (view->close) {
view->close(view);
}
}
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bool view_center(struct roots_view *view) {
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struct wlr_box box;
view_get_box(view, &box);
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struct roots_desktop *desktop = view->desktop;
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struct roots_input *input = desktop->server->input;
struct roots_seat *seat = NULL, *_seat;
wl_list_for_each(_seat, &input->seats, link) {
if (!seat || (seat->seat->last_event.tv_sec > _seat->seat->last_event.tv_sec &&
seat->seat->last_event.tv_nsec > _seat->seat->last_event.tv_nsec)) {
seat = _seat;
}
}
if (!seat) {
return false;
}
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struct wlr_output *output =
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wlr_output_layout_output_at(desktop->layout,
seat->cursor->cursor->x,
seat->cursor->cursor->y);
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if (!output) {
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// empty layout
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return false;
}
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const struct wlr_output_layout_output *l_output =
wlr_output_layout_get(desktop->layout, output);
int width, height;
wlr_output_effective_resolution(output, &width, &height);
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double view_x = (double)(width - box.width) / 2 + l_output->x;
double view_y = (double)(height - box.height) / 2 + l_output->y;
view_move(view, view_x, view_y);
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return true;
}
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void view_destroy(struct roots_view *view) {
wl_signal_emit(&view->events.destroy, view);
if (view->fullscreen_output) {
view->fullscreen_output->fullscreen_view = NULL;
}
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free(view);
}
void view_init(struct roots_view *view, struct roots_desktop *desktop) {
view->desktop = desktop;
wl_signal_init(&view->events.destroy);
}
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void view_setup(struct roots_view *view) {
struct roots_input *input = view->desktop->server->input;
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// TODO what seat gets focus? the one with the last input event?
struct roots_seat *seat;
wl_list_for_each(seat, &input->seats, link) {
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roots_seat_set_focus(seat, view);
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}
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view_center(view);
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view_update_output(view, NULL);
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}
static bool view_at(struct roots_view *view, double lx, double ly,
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struct wlr_surface **surface, double *sx, double *sy) {
if (view->type == ROOTS_WL_SHELL_VIEW &&
view->wl_shell_surface->state == WLR_WL_SHELL_SURFACE_STATE_POPUP) {
return false;
}
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double view_sx = lx - view->x;
double view_sy = ly - view->y;
struct wlr_surface_state *state = view->wlr_surface->current;
struct wlr_box box = {
.x = 0, .y = 0,
.width = state->width, .height = state->height,
};
if (view->rotation != 0.0) {
// Coordinates relative to the center of the view
double ox = view_sx - (double)box.width/2,
oy = view_sy - (double)box.height/2;
// Rotated coordinates
double rx = cos(view->rotation)*ox - sin(view->rotation)*oy,
ry = cos(view->rotation)*oy + sin(view->rotation)*ox;
view_sx = rx + (double)box.width/2;
view_sy = ry + (double)box.height/2;
}
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if (view->type == ROOTS_XDG_SHELL_V6_VIEW) {
double popup_sx, popup_sy;
struct wlr_xdg_surface_v6 *popup =
wlr_xdg_surface_v6_popup_at(view->xdg_surface_v6,
view_sx, view_sy, &popup_sx, &popup_sy);
if (popup) {
*sx = view_sx - popup_sx;
*sy = view_sy - popup_sy;
*surface = popup->surface;
return true;
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}
}
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if (view->type == ROOTS_WL_SHELL_VIEW) {
double popup_sx, popup_sy;
struct wlr_wl_shell_surface *popup =
wlr_wl_shell_surface_popup_at(view->wl_shell_surface,
view_sx, view_sy, &popup_sx, &popup_sy);
if (popup) {
*sx = view_sx - popup_sx;
*sy = view_sy - popup_sy;
*surface = popup->surface;
return true;
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}
}
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double sub_x, sub_y;
struct wlr_subsurface *subsurface =
wlr_surface_subsurface_at(view->wlr_surface,
view_sx, view_sy, &sub_x, &sub_y);
if (subsurface) {
*sx = view_sx - sub_x;
*sy = view_sy - sub_y;
*surface = subsurface->surface;
return true;
}
if (wlr_box_contains_point(&box, view_sx, view_sy) &&
pixman_region32_contains_point(&view->wlr_surface->current->input,
view_sx, view_sy, NULL)) {
*sx = view_sx;
*sy = view_sy;
*surface = view->wlr_surface;
return true;
}
return false;
}
struct roots_view *desktop_view_at(struct roots_desktop *desktop, double lx,
double ly, struct wlr_surface **surface, double *sx, double *sy) {
struct wlr_output *wlr_output =
wlr_output_layout_output_at(desktop->layout, lx, ly);
if (wlr_output != NULL) {
struct roots_output *output =
desktop_output_from_wlr_output(desktop, wlr_output);
if (output != NULL && output->fullscreen_view != NULL) {
if (view_at(output->fullscreen_view, lx, ly, surface, sx, sy)) {
return output->fullscreen_view;
} else {
return NULL;
}
}
}
struct roots_view *view;
wl_list_for_each(view, &desktop->views, link) {
if (view_at(view, lx, ly, surface, sx, sy)) {
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return view;
}
}
return NULL;
}
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static void handle_layout_change(struct wl_listener *listener, void *data) {
struct roots_desktop *desktop =
wl_container_of(listener, desktop, layout_change);
struct wlr_output *center_output =
wlr_output_layout_get_center_output(desktop->layout);
if (center_output == NULL) {
return;
}
struct wlr_box *center_output_box =
wlr_output_layout_get_box(desktop->layout, center_output);
double center_x = center_output_box->x + center_output_box->width/2;
double center_y = center_output_box->y + center_output_box->height/2;
struct roots_view *view;
wl_list_for_each(view, &desktop->views, link) {
struct wlr_box box;
view_get_box(view, &box);
if (wlr_output_layout_intersects(desktop->layout, NULL, &box)) {
continue;
}
view_move(view, center_x - box.width/2, center_y - box.height/2);
}
}
struct roots_desktop *desktop_create(struct roots_server *server,
struct roots_config *config) {
wlr_log(L_DEBUG, "Initializing roots desktop");
struct roots_desktop *desktop = calloc(1, sizeof(struct roots_desktop));
if (desktop == NULL) {
return NULL;
}
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wl_list_init(&desktop->views);
wl_list_init(&desktop->outputs);
desktop->output_add.notify = output_add_notify;
wl_signal_add(&server->backend->events.output_add, &desktop->output_add);
desktop->output_remove.notify = output_remove_notify;
wl_signal_add(&server->backend->events.output_remove,
&desktop->output_remove);
desktop->server = server;
desktop->config = config;
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const char *cursor_theme = NULL;
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const char *cursor_default = ROOTS_XCURSOR_DEFAULT;
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struct roots_cursor_config *cc =
roots_config_get_cursor(config, ROOTS_CONFIG_DEFAULT_SEAT_NAME);
if (cc != NULL) {
cursor_theme = cc->theme;
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if (cc->default_image != NULL) {
cursor_default = cc->default_image;
}
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}
desktop->xcursor_manager = wlr_xcursor_manager_create(cursor_theme,
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ROOTS_XCURSOR_SIZE);
if (desktop->xcursor_manager == NULL) {
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wlr_log(L_ERROR, "Cannot create XCursor manager for theme %s",
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cursor_theme);
free(desktop);
return NULL;
}
desktop->layout = wlr_output_layout_create();
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desktop->layout_change.notify = handle_layout_change;
wl_signal_add(&desktop->layout->events.change, &desktop->layout_change);
desktop->compositor = wlr_compositor_create(server->wl_display,
server->renderer);
desktop->xdg_shell_v6 = wlr_xdg_shell_v6_create(server->wl_display);
wl_signal_add(&desktop->xdg_shell_v6->events.new_surface,
&desktop->xdg_shell_v6_surface);
desktop->xdg_shell_v6_surface.notify = handle_xdg_shell_v6_surface;
desktop->wl_shell = wlr_wl_shell_create(server->wl_display);
wl_signal_add(&desktop->wl_shell->events.new_surface,
&desktop->wl_shell_surface);
desktop->wl_shell_surface.notify = handle_wl_shell_surface;
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#ifdef WLR_HAS_XWAYLAND
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if (config->xwayland) {
desktop->xwayland = wlr_xwayland_create(server->wl_display,
desktop->compositor);
wl_signal_add(&desktop->xwayland->events.new_surface,
&desktop->xwayland_surface);
desktop->xwayland_surface.notify = handle_xwayland_surface;
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if (wlr_xcursor_manager_load(desktop->xcursor_manager, 1)) {
wlr_log(L_ERROR, "Cannot load XWayland XCursor theme");
}
struct wlr_xcursor *xcursor = wlr_xcursor_manager_get_xcursor(
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desktop->xcursor_manager, cursor_default, 1);
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if (xcursor != NULL) {
struct wlr_xcursor_image *image = xcursor->images[0];
wlr_xwayland_set_cursor(desktop->xwayland, image->buffer,
image->width, image->width, image->height, image->hotspot_x,
image->hotspot_y);
}
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}
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#endif
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desktop->gamma_control_manager = wlr_gamma_control_manager_create(
server->wl_display);
desktop->screenshooter = wlr_screenshooter_create(server->wl_display,
server->renderer);
desktop->server_decoration_manager =
wlr_server_decoration_manager_create(server->wl_display);
wlr_server_decoration_manager_set_default_mode(
desktop->server_decoration_manager,
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WLR_SERVER_DECORATION_MANAGER_MODE_CLIENT);
desktop->primary_selection_device_manager =
wlr_primary_selection_device_manager_create(server->wl_display);
return desktop;
}
void desktop_destroy(struct roots_desktop *desktop) {
// TODO
}
struct roots_output *desktop_output_from_wlr_output(
struct roots_desktop *desktop, struct wlr_output *output) {
struct roots_output *roots_output;
wl_list_for_each(roots_output, &desktop->outputs, link) {
if (roots_output->wlr_output == output) {
return roots_output;
}
}
return NULL;
}