wlroots/rootston/view.c

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#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <wlr/types/wlr_output_layout.h>
#include "rootston/desktop.h"
#include "rootston/input.h"
#include "rootston/seat.h"
#include "rootston/server.h"
#include "rootston/view.h"
void view_init(struct roots_view *view, const struct roots_view_interface *impl,
enum roots_view_type type, struct roots_desktop *desktop) {
assert(impl->destroy);
view->impl = impl;
view->type = type;
view->desktop = desktop;
view->alpha = 1.0f;
wl_signal_init(&view->events.unmap);
wl_signal_init(&view->events.destroy);
wl_list_init(&view->children);
}
void view_destroy(struct roots_view *view) {
if (view == NULL) {
return;
}
wl_signal_emit(&view->events.destroy, view);
if (view->wlr_surface != NULL) {
view_unmap(view);
}
// Can happen if fullscreened while unmapped, and hasn't been mapped
if (view->fullscreen_output != NULL) {
view->fullscreen_output->fullscreen_view = NULL;
}
view->impl->destroy(view);
}
void view_get_box(const struct roots_view *view, struct wlr_box *box) {
box->x = view->box.x;
box->y = view->box.y;
box->width = view->box.width;
box->height = view->box.height;
}
void view_get_deco_box(const struct roots_view *view, struct wlr_box *box) {
view_get_box(view, box);
if (!view->decorated) {
return;
}
box->x -= view->border_width;
box->y -= (view->border_width + view->titlebar_height);
box->width += view->border_width * 2;
box->height += (view->border_width * 2 + view->titlebar_height);
}
enum roots_deco_part view_get_deco_part(struct roots_view *view, double sx,
double sy) {
if (!view->decorated) {
return ROOTS_DECO_PART_NONE;
}
int sw = view->wlr_surface->current.width;
int sh = view->wlr_surface->current.height;
int bw = view->border_width;
int titlebar_h = view->titlebar_height;
if (sx > 0 && sx < sw && sy < 0 && sy > -view->titlebar_height) {
return ROOTS_DECO_PART_TITLEBAR;
}
enum roots_deco_part parts = 0;
if (sy >= -(titlebar_h + bw) &&
sy <= sh + bw) {
if (sx < 0 && sx > -bw) {
parts |= ROOTS_DECO_PART_LEFT_BORDER;
} else if (sx > sw && sx < sw + bw) {
parts |= ROOTS_DECO_PART_RIGHT_BORDER;
}
}
if (sx >= -bw && sx <= sw + bw) {
if (sy > sh && sy <= sh + bw) {
parts |= ROOTS_DECO_PART_BOTTOM_BORDER;
} else if (sy >= -(titlebar_h + bw) && sy < 0) {
parts |= ROOTS_DECO_PART_TOP_BORDER;
}
}
// TODO corners
return parts;
}
static void view_update_output(const struct roots_view *view,
const struct wlr_box *before) {
struct roots_desktop *desktop = view->desktop;
if (view->wlr_surface == NULL) {
return;
}
struct wlr_box box;
view_get_box(view, &box);
struct roots_output *output;
wl_list_for_each(output, &desktop->outputs, link) {
bool intersected = before != NULL && wlr_output_layout_intersects(
desktop->layout, output->wlr_output, before);
bool intersects = wlr_output_layout_intersects(desktop->layout,
output->wlr_output, &box);
if (intersected && !intersects) {
wlr_surface_send_leave(view->wlr_surface, output->wlr_output);
if (view->toplevel_handle) {
wlr_foreign_toplevel_handle_v1_output_leave(
view->toplevel_handle, output->wlr_output);
}
}
if (!intersected && intersects) {
wlr_surface_send_enter(view->wlr_surface, output->wlr_output);
if (view->toplevel_handle) {
wlr_foreign_toplevel_handle_v1_output_enter(
view->toplevel_handle, output->wlr_output);
}
}
}
}
void view_move(struct roots_view *view, double x, double y) {
if (view->box.x == x && view->box.y == y) {
return;
}
struct wlr_box before;
view_get_box(view, &before);
if (view->impl->move) {
view->impl->move(view, x, y);
} else {
view_update_position(view, x, y);
}
view_update_output(view, &before);
}
void view_activate(struct roots_view *view, bool activate) {
if (view->impl->activate) {
view->impl->activate(view, activate);
}
if (view->toplevel_handle) {
wlr_foreign_toplevel_handle_v1_set_activated(view->toplevel_handle,
activate);
}
}
void view_resize(struct roots_view *view, uint32_t width, uint32_t height) {
struct wlr_box before;
view_get_box(view, &before);
if (view->impl->resize) {
view->impl->resize(view, width, height);
}
view_update_output(view, &before);
}
void view_move_resize(struct roots_view *view, double x, double y,
uint32_t width, uint32_t height) {
bool update_x = x != view->box.x;
bool update_y = y != view->box.y;
if (!update_x && !update_y) {
view_resize(view, width, height);
return;
}
if (view->impl->move_resize) {
view->impl->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);
}
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->box.x + (double)view_box.width/2,
view->box.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_arrange_maximized(struct roots_view *view) {
if (view->fullscreen_output != NULL) {
return;
}
struct wlr_box view_box;
view_get_box(view, &view_box);
struct wlr_output *output = view_get_output(view);
struct roots_output *roots_output = output->data;
struct wlr_box *output_box =
wlr_output_layout_get_box(view->desktop->layout, output);
struct wlr_box usable_area;
memcpy(&usable_area, &roots_output->usable_area,
sizeof(struct wlr_box));
usable_area.x += output_box->x;
usable_area.y += output_box->y;
view_move_resize(view, usable_area.x, usable_area.y,
usable_area.width, usable_area.height);
view_rotate(view, 0);
}
void view_maximize(struct roots_view *view, bool maximized) {
if (view->maximized == maximized || view->fullscreen_output != NULL) {
return;
}
if (view->impl->maximize) {
view->impl->maximize(view, maximized);
}
if (view->toplevel_handle) {
wlr_foreign_toplevel_handle_v1_set_maximized(view->toplevel_handle,
maximized);
}
if (!view->maximized && maximized) {
view->maximized = true;
view->saved.x = view->box.x;
view->saved.y = view->box.y;
view->saved.rotation = view->rotation;
view->saved.width = view->box.width;
view->saved.height = view->box.height;
view_arrange_maximized(view);
}
if (view->maximized && !maximized) {
view->maximized = false;
view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
view->saved.height);
view_rotate(view, view->saved.rotation);
}
}
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->impl->set_fullscreen) {
view->impl->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;
}
struct wlr_box view_box;
view_get_box(view, &view_box);
view->saved.x = view->box.x;
view->saved.y = view->box.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_rotate(view, 0);
roots_output->fullscreen_view = view;
view->fullscreen_output = roots_output;
output_damage_whole(roots_output);
}
if (was_fullscreen && !fullscreen) {
view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
view->saved.height);
view_rotate(view, view->saved.rotation);
output_damage_whole(view->fullscreen_output);
view->fullscreen_output->fullscreen_view = NULL;
view->fullscreen_output = NULL;
}
}
void view_rotate(struct roots_view *view, float rotation) {
if (view->rotation == rotation) {
return;
}
view_damage_whole(view);
view->rotation = rotation;
view_damage_whole(view);
}
void view_cycle_alpha(struct roots_view *view) {
view->alpha -= 0.05;
/* Don't go completely transparent */
if (view->alpha < 0.1) {
view->alpha = 1.0;
}
view_damage_whole(view);
}
void view_close(struct roots_view *view) {
if (view->impl->close) {
view->impl->close(view);
}
}
bool view_center(struct roots_view *view) {
struct wlr_box box;
view_get_box(view, &box);
struct roots_desktop *desktop = view->desktop;
struct roots_input *input = desktop->server->input;
struct roots_seat *seat = input_last_active_seat(input);
if (!seat) {
return false;
}
struct wlr_output *output = wlr_output_layout_output_at(desktop->layout,
seat->cursor->cursor->x, seat->cursor->cursor->y);
if (!output) {
// empty layout
return false;
}
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);
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);
return true;
}
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void view_child_destroy(struct roots_view_child *child) {
if (child == NULL) {
return;
}
view_damage_whole(child->view);
wl_list_remove(&child->link);
wl_list_remove(&child->commit.link);
wl_list_remove(&child->new_subsurface.link);
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child->impl->destroy(child);
}
static void view_child_handle_commit(struct wl_listener *listener,
void *data) {
struct roots_view_child *child = wl_container_of(listener, child, commit);
view_apply_damage(child->view);
}
static void view_child_handle_new_subsurface(struct wl_listener *listener,
void *data) {
struct roots_view_child *child =
wl_container_of(listener, child, new_subsurface);
struct wlr_subsurface *wlr_subsurface = data;
subsurface_create(child->view, wlr_subsurface);
}
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void view_child_init(struct roots_view_child *child,
const struct roots_view_child_interface *impl, struct roots_view *view,
struct wlr_surface *wlr_surface) {
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assert(impl->destroy);
child->impl = impl;
child->view = view;
child->wlr_surface = wlr_surface;
child->commit.notify = view_child_handle_commit;
wl_signal_add(&wlr_surface->events.commit, &child->commit);
child->new_subsurface.notify = view_child_handle_new_subsurface;
wl_signal_add(&wlr_surface->events.new_subsurface, &child->new_subsurface);
wl_list_insert(&view->children, &child->link);
}
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static const struct roots_view_child_interface subsurface_impl;
static void subsurface_destroy(struct roots_view_child *child) {
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assert(child->impl == &subsurface_impl);
struct roots_subsurface *subsurface = (struct roots_subsurface *)child;
wl_list_remove(&subsurface->destroy.link);
wl_list_remove(&subsurface->map.link);
wl_list_remove(&subsurface->unmap.link);
free(subsurface);
}
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static const struct roots_view_child_interface subsurface_impl = {
.destroy = subsurface_destroy,
};
static void subsurface_handle_destroy(struct wl_listener *listener,
void *data) {
struct roots_subsurface *subsurface =
wl_container_of(listener, subsurface, destroy);
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view_child_destroy(&subsurface->view_child);
}
static void subsurface_handle_map(struct wl_listener *listener,
void *data) {
struct roots_subsurface *subsurface =
wl_container_of(listener, subsurface, map);
struct roots_view *view = subsurface->view_child.view;
view_damage_whole(view);
input_update_cursor_focus(view->desktop->server->input);
}
static void subsurface_handle_unmap(struct wl_listener *listener,
void *data) {
struct roots_subsurface *subsurface =
wl_container_of(listener, subsurface, unmap);
struct roots_view *view = subsurface->view_child.view;
view_damage_whole(view);
input_update_cursor_focus(view->desktop->server->input);
}
struct roots_subsurface *subsurface_create(struct roots_view *view,
struct wlr_subsurface *wlr_subsurface) {
struct roots_subsurface *subsurface =
calloc(1, sizeof(struct roots_subsurface));
if (subsurface == NULL) {
return NULL;
}
subsurface->wlr_subsurface = wlr_subsurface;
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view_child_init(&subsurface->view_child, &subsurface_impl,
view, wlr_subsurface->surface);
subsurface->destroy.notify = subsurface_handle_destroy;
wl_signal_add(&wlr_subsurface->events.destroy, &subsurface->destroy);
subsurface->map.notify = subsurface_handle_map;
wl_signal_add(&wlr_subsurface->events.map, &subsurface->map);
subsurface->unmap.notify = subsurface_handle_unmap;
wl_signal_add(&wlr_subsurface->events.unmap, &subsurface->unmap);
return subsurface;
}
static void view_handle_new_subsurface(struct wl_listener *listener,
void *data) {
struct roots_view *view = wl_container_of(listener, view, new_subsurface);
struct wlr_subsurface *wlr_subsurface = data;
subsurface_create(view, wlr_subsurface);
}
void view_map(struct roots_view *view, struct wlr_surface *surface) {
assert(view->wlr_surface == NULL);
view->wlr_surface = surface;
struct wlr_subsurface *subsurface;
wl_list_for_each(subsurface, &view->wlr_surface->subsurfaces,
parent_link) {
subsurface_create(view, subsurface);
}
view->new_subsurface.notify = view_handle_new_subsurface;
wl_signal_add(&view->wlr_surface->events.new_subsurface,
&view->new_subsurface);
wl_list_insert(&view->desktop->views, &view->link);
view_damage_whole(view);
input_update_cursor_focus(view->desktop->server->input);
}
void view_unmap(struct roots_view *view) {
assert(view->wlr_surface != NULL);
wl_signal_emit(&view->events.unmap, view);
view_damage_whole(view);
wl_list_remove(&view->link);
wl_list_remove(&view->new_subsurface.link);
struct roots_view_child *child, *tmp;
wl_list_for_each_safe(child, tmp, &view->children, link) {
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view_child_destroy(child);
}
if (view->fullscreen_output != NULL) {
output_damage_whole(view->fullscreen_output);
view->fullscreen_output->fullscreen_view = NULL;
view->fullscreen_output = NULL;
}
view->wlr_surface = NULL;
view->box.width = view->box.height = 0;
if (view->toplevel_handle) {
wlr_foreign_toplevel_handle_v1_destroy(view->toplevel_handle);
view->toplevel_handle = NULL;
}
}
void view_initial_focus(struct roots_view *view) {
struct roots_input *input = view->desktop->server->input;
// TODO what seat gets focus? the one with the last input event?
struct roots_seat *seat;
wl_list_for_each(seat, &input->seats, link) {
roots_seat_set_focus(seat, view);
}
}
void view_setup(struct roots_view *view) {
view_initial_focus(view);
if (view->fullscreen_output == NULL && !view->maximized) {
view_center(view);
}
view_create_foreign_toplevel_handle(view);
view_update_output(view, NULL);
}
void view_apply_damage(struct roots_view *view) {
struct roots_output *output;
wl_list_for_each(output, &view->desktop->outputs, link) {
output_damage_from_view(output, view);
}
}
void view_damage_whole(struct roots_view *view) {
struct roots_output *output;
wl_list_for_each(output, &view->desktop->outputs, link) {
output_damage_whole_view(output, view);
}
}
void view_update_position(struct roots_view *view, int x, int y) {
if (view->box.x == x && view->box.y == y) {
return;
}
view_damage_whole(view);
view->box.x = x;
view->box.y = y;
view_damage_whole(view);
}
void view_update_size(struct roots_view *view, int width, int height) {
if (view->box.width == width && view->box.height == height) {
return;
}
view_damage_whole(view);
view->box.width = width;
view->box.height = height;
view_damage_whole(view);
}
void view_update_decorated(struct roots_view *view, bool decorated) {
if (view->decorated == decorated) {
return;
}
view_damage_whole(view);
view->decorated = decorated;
if (decorated) {
view->border_width = 4;
view->titlebar_height = 12;
} else {
view->border_width = 0;
view->titlebar_height = 0;
}
view_damage_whole(view);
}
void view_set_title(struct roots_view *view, const char *title) {
if (view->toplevel_handle) {
wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle, title);
}
}
void view_set_app_id(struct roots_view *view, const char *app_id) {
if (view->toplevel_handle) {
wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle, app_id);
}
}
static void handle_toplevel_handle_request_maximize(struct wl_listener *listener,
void *data) {
struct roots_view *view = wl_container_of(listener, view,
toplevel_handle_request_maximize);
struct wlr_foreign_toplevel_handle_v1_maximized_event *event = data;
view_maximize(view, event->maximized);
}
static void handle_toplevel_handle_request_activate(struct wl_listener *listener,
void *data) {
struct roots_view *view =
wl_container_of(listener, view, toplevel_handle_request_activate);
struct wlr_foreign_toplevel_handle_v1_activated_event *event = data;
struct roots_seat *seat;
wl_list_for_each(seat, &view->desktop->server->input->seats, link) {
if (event->seat == seat->seat) {
roots_seat_set_focus(seat, view);
}
}
}
static void handle_toplevel_handle_request_close(struct wl_listener *listener,
void *data) {
struct roots_view *view =
wl_container_of(listener, view, toplevel_handle_request_close);
view_close(view);
}
void view_create_foreign_toplevel_handle(struct roots_view *view) {
view->toplevel_handle =
wlr_foreign_toplevel_handle_v1_create(
view->desktop->foreign_toplevel_manager_v1);
view->toplevel_handle_request_maximize.notify =
handle_toplevel_handle_request_maximize;
wl_signal_add(&view->toplevel_handle->events.request_maximize,
&view->toplevel_handle_request_maximize);
view->toplevel_handle_request_activate.notify =
handle_toplevel_handle_request_activate;
wl_signal_add(&view->toplevel_handle->events.request_activate,
&view->toplevel_handle_request_activate);
view->toplevel_handle_request_close.notify =
handle_toplevel_handle_request_close;
wl_signal_add(&view->toplevel_handle->events.request_close,
&view->toplevel_handle_request_close);
}