diff options
| -rw-r--r-- | tinywl/.gitignore | 3 | ||||
| -rw-r--r-- | tinywl/Makefile | 24 | ||||
| -rw-r--r-- | tinywl/tinywl.c | 620 |
3 files changed, 647 insertions, 0 deletions
diff --git a/tinywl/.gitignore b/tinywl/.gitignore new file mode 100644 index 00000000..2b5bb6f8 --- /dev/null +++ b/tinywl/.gitignore @@ -0,0 +1,3 @@ +tinywl +*-protocol.c +*-protocol.h diff --git a/tinywl/Makefile b/tinywl/Makefile new file mode 100644 index 00000000..3ecd4670 --- /dev/null +++ b/tinywl/Makefile @@ -0,0 +1,24 @@ +WAYLAND_PROTOCOLS=/usr/share/wayland-protocols + +xdg-shell-protocol.h: + wayland-scanner server-header \ + $(WAYLAND_PROTOCOLS)/stable/xdg-shell/xdg-shell.xml $@ + +xdg-shell-protocol.c: xdg-shell-protocol.h + wayland-scanner private-code \ + $(WAYLAND_PROTOCOLS)/stable/xdg-shell/xdg-shell.xml $@ + +tinywl: tinywl.c xdg-shell-protocol.h xdg-shell-protocol.c + $(CC) $(CFLAGS) \ + -g -Werror -I. \ + -DWLR_USE_UNSTABLE \ + $(shell pkg-config --cflags --libs wlroots) \ + $(shell pkg-config --cflags --libs wayland-server) \ + $(shell pkg-config --cflags --libs xkbcommon) \ + -o $@ $< + +clean: + rm -f tinywl xdg-shell-protocol.h xdg-shell-protocol.c + +.DEFAULT_GOAL=tinywl +.PHONY: clean diff --git a/tinywl/tinywl.c b/tinywl/tinywl.c new file mode 100644 index 00000000..101cd53a --- /dev/null +++ b/tinywl/tinywl.c @@ -0,0 +1,620 @@ +#define _POSIX_C_SOURCE 200112L +#include <getopt.h> +#include <stdbool.h> +#include <stdlib.h> +#include <stdio.h> +#include <time.h> +#include <unistd.h> +#include <wayland-server.h> +#include <wlr/backend.h> +#include <wlr/render/wlr_renderer.h> +#include <wlr/types/wlr_cursor.h> +#include <wlr/types/wlr_compositor.h> +#include <wlr/types/wlr_data_device.h> +#include <wlr/types/wlr_input_device.h> +#include <wlr/types/wlr_keyboard.h> +#include <wlr/types/wlr_linux_dmabuf_v1.h> +#include <wlr/types/wlr_matrix.h> +#include <wlr/types/wlr_output.h> +#include <wlr/types/wlr_output_layout.h> +#include <wlr/types/wlr_pointer.h> +#include <wlr/types/wlr_seat.h> +#include <wlr/types/wlr_xcursor_manager.h> +#include <wlr/types/wlr_xdg_shell.h> +#include <wlr/util/log.h> +#include <xkbcommon/xkbcommon.h> + +enum tinywl_cursor_mode { + TINYWL_CURSOR_PASSTHROUGH, + TINYWL_CURSOR_MOVE, + TINYWL_CURSOR_RESIZE, +}; + +struct tinywl_server { + struct wl_display *wl_display; + struct wlr_backend *backend; + struct wlr_renderer *renderer; + + struct wlr_xdg_shell *xdg_shell; + struct wl_listener new_xdg_surface; + struct wl_list views; + + struct wlr_cursor *cursor; + struct wlr_xcursor_manager *cursor_mgr; + struct wl_listener cursor_motion; + struct wl_listener cursor_motion_absolute; + struct wl_listener cursor_button; + struct wl_listener cursor_axis; + + struct wlr_seat *seat; + struct wl_listener new_input; + struct wl_listener request_cursor; + struct wl_list keyboards; + enum tinywl_cursor_mode cursor_mode; + struct tinywl_view *grabbed_view; + double grab_x, grab_y; + int grab_width, grab_height; + uint32_t resize_edges; + + struct wlr_output_layout *output_layout; + struct wl_list outputs; + struct wl_listener new_output; +}; + +struct tinywl_output { + struct wl_list link; + struct tinywl_server *server; + struct wlr_output *wlr_output; + struct wl_listener frame; +}; + +struct tinywl_view { + struct wl_list link; + struct tinywl_server *server; + struct wlr_xdg_surface *xdg_surface; + struct wl_listener map; + struct wl_listener unmap; + struct wl_listener destroy; + struct wl_listener request_move; + struct wl_listener request_resize; + bool mapped; + int x, y; +}; + +struct tinywl_keyboard { + struct wl_list link; + struct tinywl_server *server; + struct wlr_input_device *device; + + struct wl_listener modifiers; + struct wl_listener key; +}; + +struct tinywl_pointer { + struct wl_list link; + struct tinywl_server *server; + struct wlr_input_device *device; +}; + +static void keyboard_handle_modifiers( + struct wl_listener *listener, void *data) { + struct tinywl_keyboard *keyboard = + wl_container_of(listener, keyboard, modifiers); + wlr_seat_set_keyboard(keyboard->server->seat, keyboard->device); + wlr_seat_keyboard_notify_modifiers(keyboard->server->seat, + &keyboard->device->keyboard->modifiers); +} + +static void keyboard_handle_key( + struct wl_listener *listener, void *data) { + struct tinywl_keyboard *keyboard = + wl_container_of(listener, keyboard, key); + struct wlr_event_keyboard_key *event = data; + struct wlr_seat *seat = keyboard->server->seat; + // TODO: keybindings for moving windows about + wlr_seat_set_keyboard(seat, keyboard->device); + wlr_seat_keyboard_notify_key(seat, event->time_msec, + event->keycode, event->state); +} + +static void server_new_keyboard(struct tinywl_server *server, + struct wlr_input_device *device) { + struct tinywl_keyboard *keyboard = + calloc(1, sizeof(struct tinywl_keyboard)); + keyboard->server = server; + keyboard->device = device; + + struct xkb_rule_names rules = { 0 }; + struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS); + struct xkb_keymap *keymap = xkb_map_new_from_names(context, &rules, + XKB_KEYMAP_COMPILE_NO_FLAGS); + + wlr_keyboard_set_keymap(device->keyboard, keymap); + xkb_keymap_unref(keymap); + xkb_context_unref(context); + wlr_keyboard_set_repeat_info(device->keyboard, 25, 600); + + keyboard->modifiers.notify = keyboard_handle_modifiers; + wl_signal_add(&device->keyboard->events.modifiers, &keyboard->modifiers); + keyboard->key.notify = keyboard_handle_key; + wl_signal_add(&device->keyboard->events.key, &keyboard->key); + + wlr_seat_set_keyboard(server->seat, device); + + wl_list_insert(&server->keyboards, &keyboard->link); +} + +static void server_new_pointer(struct tinywl_server *server, + struct wlr_input_device *device) { + wlr_cursor_attach_input_device(server->cursor, device); +} + +static void server_new_input(struct wl_listener *listener, void *data) { + struct tinywl_server *server = + wl_container_of(listener, server, new_input); + struct wlr_input_device *device = data; + switch (device->type) { + case WLR_INPUT_DEVICE_KEYBOARD: + server_new_keyboard(server, device); + break; + case WLR_INPUT_DEVICE_POINTER: + server_new_pointer(server, device); + break; + } + uint32_t caps = WL_SEAT_CAPABILITY_POINTER; + if (!wl_list_empty(&server->keyboards)) { + caps |= WL_SEAT_CAPABILITY_KEYBOARD; + } + wlr_seat_set_capabilities(server->seat, caps); +} + +static void seat_request_cursor(struct wl_listener *listener, void *data) { + struct tinywl_server *server = wl_container_of( + listener, server, request_cursor); + struct wlr_seat_pointer_request_set_cursor_event *event = data; + struct wlr_seat_client *focused_client = + server->seat->pointer_state.focused_client; + if (focused_client == event->seat_client) { + wlr_cursor_set_surface(server->cursor, event->surface, + event->hotspot_x, event->hotspot_y); + } +} + +static bool view_at(struct tinywl_view *view, + double lx, double ly, struct wlr_surface **surface, + double *sx, double *sy) { + double view_sx = lx - view->x; + double view_sy = ly - view->y; + + struct wlr_surface_state *state = &view->xdg_surface->surface->current; + struct wlr_box box = { + .x = 0, .y = 0, + .width = state->width, .height = state->height, + }; + + double _sx, _sy; + struct wlr_surface *_surface = NULL; + _surface = wlr_xdg_surface_surface_at( + view->xdg_surface, view_sx, view_sy, &_sx, &_sy); + + if (_surface != NULL) { + *sx = _sx; + *sy = _sy; + *surface = _surface; + return true; + } + + return false; +} + +static struct tinywl_view *desktop_view_at( + struct tinywl_server *server, double lx, double ly, + struct wlr_surface **surface, double *sx, double *sy) { + struct tinywl_view *view; + wl_list_for_each(view, &server->views, link) { + if (view_at(view, lx, ly, surface, sx, sy)) { + return view; + } + } + return NULL; +} + +static void focus_view(struct tinywl_view *view, struct wlr_surface *surface) { + struct tinywl_server *server = view->server; + struct wlr_seat *seat = server->seat; + struct wlr_surface *prev_surface = seat->keyboard_state.focused_surface; + if (prev_surface == surface) { + return; + } + if (prev_surface) { + struct wlr_xdg_surface *previous = wlr_xdg_surface_from_wlr_surface( + seat->keyboard_state.focused_surface); + wlr_xdg_toplevel_set_activated(previous, false); + } + struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat); + wl_list_remove(&view->link); + wl_list_insert(&server->views, &view->link); + wlr_xdg_toplevel_set_activated(view->xdg_surface, true); + wlr_seat_keyboard_notify_enter(seat, view->xdg_surface->surface, + keyboard->keycodes, keyboard->num_keycodes, &keyboard->modifiers); +} + +static void process_cursor_move(struct tinywl_server *server, uint32_t time) { + server->grabbed_view->x = server->cursor->x - server->grab_x; + server->grabbed_view->y = server->cursor->y - server->grab_y; +} + +static void process_cursor_resize(struct tinywl_server *server, uint32_t time) { + struct tinywl_view *view = server->grabbed_view; + double dx = server->cursor->x - server->grab_x; + double dy = server->cursor->y - server->grab_y; + double x = view->x; + double y = view->y; + int width = server->grab_width; + int height = server->grab_height; + if (server->resize_edges & WLR_EDGE_TOP) { + y = server->grab_y + dy; + height -= dy; + if (height < 1) { + y += height; + } + } else if (server->resize_edges & WLR_EDGE_BOTTOM) { + height += dy; + } + if (server->resize_edges & WLR_EDGE_LEFT) { + x = server->grab_x + dx; + width -= dx; + if (width < 1) { + x += width; + } + } else if (server->resize_edges & WLR_EDGE_RIGHT) { + width += dx; + } + view->x = x; + view->y = y; + wlr_xdg_toplevel_set_size(view->xdg_surface, width, height); +} + +static void process_cursor_motion(struct tinywl_server *server, uint32_t time) { + if (server->cursor_mode == TINYWL_CURSOR_MOVE) { + process_cursor_move(server, time); + return; + } else if (server->cursor_mode == TINYWL_CURSOR_RESIZE) { + process_cursor_resize(server, time); + return; + } + + double sx, sy; + struct wlr_seat *seat = server->seat; + struct wlr_surface *surface; + struct tinywl_view *view = desktop_view_at(server, + server->cursor->x, server->cursor->y, &surface, &sx, &sy); + if (!view) { + wlr_xcursor_manager_set_cursor_image( + server->cursor_mgr, "left_ptr", server->cursor); + return; + } + + if (surface) { + bool focus_changed = seat->pointer_state.focused_surface != surface; + wlr_seat_pointer_notify_enter(seat, surface, sx, sy); + if (!focus_changed) { + wlr_seat_pointer_notify_motion(seat, time, sx, sy); + } + } else { + wlr_seat_pointer_clear_focus(seat); + } +} + +static void server_cursor_motion(struct wl_listener *listener, void *data) { + struct tinywl_server *server = + wl_container_of(listener, server, cursor_motion_absolute); + struct wlr_event_pointer_motion *event = data; + wlr_cursor_move(server->cursor, event->device, + event->delta_x, event->delta_y); + process_cursor_motion(server, event->time_msec); +} + +static void server_cursor_motion_absolute( + struct wl_listener *listener, void *data) { + struct tinywl_server *server = + wl_container_of(listener, server, cursor_motion_absolute); + struct wlr_event_pointer_motion_absolute *event = data; + wlr_cursor_warp_absolute(server->cursor, event->device, event->x, event->y); + process_cursor_motion(server, event->time_msec); +} + +static void server_cursor_button(struct wl_listener *listener, void *data) { + struct tinywl_server *server = + wl_container_of(listener, server, cursor_button); + struct wlr_event_pointer_button *event = data; + wlr_seat_pointer_notify_button(server->seat, + event->time_msec, event->button, event->state); + double sx, sy; + struct wlr_seat *seat = server->seat; + struct wlr_surface *surface; + struct tinywl_view *view = desktop_view_at(server, + server->cursor->x, server->cursor->y, &surface, &sx, &sy); + if (event->state == WLR_BUTTON_RELEASED) { + server->cursor_mode = TINYWL_CURSOR_PASSTHROUGH; + } else { + focus_view(view, surface); + } +} + +static void server_cursor_axis(struct wl_listener *listener, void *data) { + struct tinywl_server *server = + wl_container_of(listener, server, cursor_axis); + struct wlr_event_pointer_axis *event = data; + wlr_seat_pointer_notify_axis(server->seat, + event->time_msec, event->orientation, event->delta, + event->delta_discrete, event->source); +} + +struct render_data { + struct wlr_output *output; + struct wlr_renderer *renderer; + struct tinywl_view *view; + struct timespec *when; +}; + +static void render_surface(struct wlr_surface *surface, + int sx, int sy, void *data) { + struct render_data *rdata = data; + struct tinywl_view *view = rdata->view; + struct wlr_output *output = rdata->output; + + struct wlr_texture *texture = wlr_surface_get_texture(surface); + if (texture == NULL) { + return; + } + + double ox, oy; + wlr_output_layout_output_coords( + view->server->output_layout, output, &ox, &oy); + ox += view->x + sx, oy += view->y + sy; + + struct wlr_box box = { + .x = ox * output->scale, + .y = oy * output->scale, + .width = surface->current.width * output->scale, + .height = surface->current.height * output->scale, + }; + + float matrix[9]; + enum wl_output_transform transform = + wlr_output_transform_invert(surface->current.transform); + wlr_matrix_project_box(matrix, &box, transform, 0, + output->transform_matrix); + + wlr_render_texture_with_matrix(rdata->renderer, texture, matrix, 1); + + wlr_surface_send_frame_done(surface, rdata->when); +} + +static void output_frame(struct wl_listener *listener, void *data) { + struct tinywl_output *output = + wl_container_of(listener, output, frame); + struct wlr_renderer *renderer = output->server->renderer; + + struct timespec now; + clock_gettime(CLOCK_MONOTONIC, &now); + + wlr_output_make_current(output->wlr_output, NULL); + int width, height; + wlr_output_effective_resolution(output->wlr_output, &width, &height); + wlr_renderer_begin(renderer, width, height); + + float color[4] = {0.3, 0.3, 0.3, 1.0}; + wlr_renderer_clear(renderer, color); + + struct tinywl_view *view; + wl_list_for_each_reverse(view, &output->server->views, link) { + if (!view->mapped) { + continue; + } + struct render_data rdata = { + .output = output->wlr_output, + .view = view, + .renderer = renderer, + .when = &now, + }; + wlr_xdg_surface_for_each_surface(view->xdg_surface, + render_surface, &rdata); + } + + wlr_output_swap_buffers(output->wlr_output, NULL, NULL); + wlr_renderer_end(renderer); +} + +static void server_new_output(struct wl_listener *listener, void *data) { + struct tinywl_server *server = + wl_container_of(listener, server, new_output); + struct wlr_output *wlr_output = data; + + struct tinywl_output *output = + calloc(1, sizeof(struct tinywl_output)); + output->wlr_output = wlr_output; + output->server = server; + output->frame.notify = output_frame; + wl_signal_add(&wlr_output->events.frame, &output->frame); + wl_list_insert(&server->outputs, &output->link); + + wlr_output_layout_add_auto(server->output_layout, wlr_output); + + wlr_output_create_global(wlr_output); +} + +static void xdg_surface_map(struct wl_listener *listener, void *data) { + struct tinywl_view *view = wl_container_of(listener, view, map); + view->mapped = true; + focus_view(view, view->xdg_surface->surface); +} + +static void xdg_surface_unmap(struct wl_listener *listener, void *data) { + struct tinywl_view *view = wl_container_of(listener, view, unmap); + view->mapped = false; +} + +static void xdg_surface_destroy(struct wl_listener *listener, void *data) { + struct tinywl_view *view = wl_container_of(listener, view, destroy); + wl_list_remove(&view->link); + free(view); +} + +static void begin_interactive(struct tinywl_view *view, + enum tinywl_cursor_mode mode, uint32_t edges) { + struct tinywl_server *server = view->server; + struct wlr_surface *focused_surface = + server->seat->pointer_state.focused_surface; + if (view->xdg_surface->surface != focused_surface) { + return; + } + server->grabbed_view = view; + server->cursor_mode = mode; + struct wlr_box geo_box; + wlr_xdg_surface_get_geometry(view->xdg_surface, &geo_box); + if (mode == TINYWL_CURSOR_MOVE) { + server->grab_x = server->cursor->x - view->x; + server->grab_y = server->cursor->y - view->y; + } else { + server->grab_x = server->cursor->x + geo_box.x; + server->grab_y = server->cursor->y + geo_box.y; + } + server->grab_width = geo_box.width; + server->grab_height = geo_box.height; + server->resize_edges = edges; +} + +static void xdg_toplevel_request_move( + struct wl_listener *listener, void *data) { + struct tinywl_view *view = wl_container_of(listener, view, request_move); + begin_interactive(view, TINYWL_CURSOR_MOVE, 0); +} + +static void xdg_toplevel_request_resize( + struct wl_listener *listener, void *data) { + struct wlr_xdg_toplevel_resize_event *event = data; + struct tinywl_view *view = wl_container_of(listener, view, request_resize); + begin_interactive(view, TINYWL_CURSOR_RESIZE, event->edges); +} + +static void server_new_xdg_surface(struct wl_listener *listener, void *data) { + struct tinywl_server *server = + wl_container_of(listener, server, new_xdg_surface); + struct wlr_xdg_surface *xdg_surface = data; + if (xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) { + return; + } + + struct tinywl_view *view = + calloc(1, sizeof(struct tinywl_view)); + view->server = server; + view->xdg_surface = xdg_surface; + + view->map.notify = xdg_surface_map; + wl_signal_add(&xdg_surface->events.map, &view->map); + view->unmap.notify = xdg_surface_unmap; + wl_signal_add(&xdg_surface->events.unmap, &view->unmap); + view->destroy.notify = xdg_surface_destroy; + wl_signal_add(&xdg_surface->events.destroy, &view->destroy); + + struct wlr_xdg_toplevel *toplevel = xdg_surface->toplevel; + view->request_move.notify = xdg_toplevel_request_move; + wl_signal_add(&toplevel->events.request_move, &view->request_move); + view->request_resize.notify = xdg_toplevel_request_resize; + wl_signal_add(&toplevel->events.request_resize, &view->request_resize); + + wl_list_insert(&server->views, &view->link); +} + +int main(int argc, char *argv[]) { + char *startup_cmd = NULL; + + int c; + while ((c = getopt(argc, argv, "s:h")) != -1) { + switch (c) { + case 's': + startup_cmd = optarg; + break; + default: + printf("Usage: %s [-s startup command]\n", argv[0]); + return 0; + } + } + if (optind < argc) { + printf("Usage: %s [-s startup command]\n", argv[0]); + return 0; + } + + struct tinywl_server server; + server.wl_display = wl_display_create(); + server.backend = wlr_backend_autocreate(server.wl_display, NULL); + + server.renderer = wlr_backend_get_renderer(server.backend); + wlr_renderer_init_wl_display(server.renderer, server.wl_display); + + wlr_compositor_create(server.wl_display, server.renderer); + wlr_linux_dmabuf_v1_create(server.wl_display, server.renderer); + wlr_data_device_manager_create(server.wl_display); + + server.output_layout = wlr_output_layout_create(); + + wl_list_init(&server.outputs); + server.new_output.notify = server_new_output; + wl_signal_add(&server.backend->events.new_output, &server.new_output); + + wl_list_init(&server.views); + server.xdg_shell = wlr_xdg_shell_create(server.wl_display); + server.new_xdg_surface.notify = server_new_xdg_surface; + wl_signal_add(&server.xdg_shell->events.new_surface, + &server.new_xdg_surface); + + server.cursor = wlr_cursor_create(); + wlr_cursor_attach_output_layout(server.cursor, server.output_layout); + + server.cursor_mgr = wlr_xcursor_manager_create(NULL, 24); + wlr_xcursor_manager_load(server.cursor_mgr, 1); + + server.cursor_motion.notify = server_cursor_motion; + wl_signal_add(&server.cursor->events.motion, &server.cursor_motion); + server.cursor_motion_absolute.notify = server_cursor_motion_absolute; + wl_signal_add(&server.cursor->events.motion_absolute, + &server.cursor_motion_absolute); + server.cursor_button.notify = server_cursor_button; + wl_signal_add(&server.cursor->events.button, &server.cursor_button); + server.cursor_axis.notify = server_cursor_axis; + wl_signal_add(&server.cursor->events.axis, &server.cursor_axis); + + wl_list_init(&server.keyboards); + server.new_input.notify = server_new_input; + wl_signal_add(&server.backend->events.new_input, &server.new_input); + server.seat = wlr_seat_create(server.wl_display, "seat0"); + server.request_cursor.notify = seat_request_cursor; + wl_signal_add(&server.seat->events.request_set_cursor, + &server.request_cursor); + + const char *socket = wl_display_add_socket_auto(server.wl_display); + if (!socket) { + wlr_backend_destroy(server.backend); + return 1; + } + + if (!wlr_backend_start(server.backend)) { + wlr_backend_destroy(server.backend); + wl_display_destroy(server.wl_display); + return 1; + } + + setenv("WAYLAND_DISPLAY", socket, true); + if (startup_cmd) { + if (fork() == 0) { + execl("/bin/sh", "/bin/sh", "-c", startup_cmd, (void *)NULL); + } + } + wl_display_run(server.wl_display); + + wl_display_destroy_clients(server.wl_display); + wl_display_destroy(server.wl_display); + return 0; +} |