diff options
Diffstat (limited to 'rootston/view.c')
| -rw-r--r-- | rootston/view.c | 661 |
1 files changed, 661 insertions, 0 deletions
diff --git a/rootston/view.c b/rootston/view.c new file mode 100644 index 00000000..c409c75c --- /dev/null +++ b/rootston/view.c @@ -0,0 +1,661 @@ +#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" + +struct roots_view *view_create(struct roots_desktop *desktop, + const struct roots_view_interface *impl) { + struct roots_view *view = calloc(1, sizeof(struct roots_view)); + if (!view) { + return NULL; + } + view->impl = impl; + view->desktop = desktop; + view->alpha = 1.0f; + wl_signal_init(&view->events.unmap); + wl_signal_init(&view->events.destroy); + wl_list_init(&view->children); + return 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; +} + +void view_child_finish(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); +} + +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); +} + +void view_child_init(struct roots_view_child *child, struct roots_view *view, + struct wlr_surface *wlr_surface) { + assert(child->destroy); + 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); +} + +static void subsurface_destroy(struct roots_view_child *child) { + assert(child->destroy == subsurface_destroy); + struct roots_subsurface *subsurface = (struct roots_subsurface *)child; + if (subsurface == NULL) { + return; + } + wl_list_remove(&subsurface->destroy.link); + wl_list_remove(&subsurface->map.link); + wl_list_remove(&subsurface->unmap.link); + view_child_finish(&subsurface->view_child); + free(subsurface); +} + +static void subsurface_handle_destroy(struct wl_listener *listener, + void *data) { + struct roots_subsurface *subsurface = + wl_container_of(listener, subsurface, destroy); + subsurface_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; + subsurface->view_child.destroy = subsurface_destroy; + view_child_init(&subsurface->view_child, 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; +} + +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; + } + + if (view->impl->destroy) { + view->impl->destroy(view); + } + + free(view); +} + +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) { + 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); +} |