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Merge remote-tracking branch 'tinywl/master' into tinywl

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master
Drew DeVault 6 years ago
parent e2c216a4b8 b3f51e39f8
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3
tinywl/.gitignore vendored
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tinywl
*-protocol.c
*-protocol.h

125
tinywl/LICENSE
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This work is licensed under CC0, which effectively puts it in the public domain.
---
Creative Commons Legal Code
CC0 1.0 Universal
CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
HEREUNDER.
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24
tinywl/Makefile
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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

5
tinywl/README
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TinyWL
Tiny Wayland compositor.
Send patches to: ~sircmpwn/public-inbox@lists.sr.ht

667
tinywl/tinywl.c
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#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 focus_view(struct tinywl_view *view, struct wlr_surface *surface) {
if (view == NULL) {
return;
}
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 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 bool handle_keybinding(struct tinywl_server *server, xkb_keysym_t sym) {
switch (sym) {
case XKB_KEY_Escape:
wl_display_terminate(server->wl_display);
break;
case XKB_KEY_F1:
/* Cycle to the next view */
if (wl_list_length(&server->views) < 2) {
break;
}
struct tinywl_view *current_view = wl_container_of(
server->views.next, current_view, link);
struct tinywl_view *next_view = wl_container_of(
current_view->link.next, next_view, link);
focus_view(next_view, next_view->xdg_surface->surface);
/* Move the previous view to the end of the list */
wl_list_remove(&current_view->link);
wl_list_insert(server->views.prev, &current_view->link);
break;
default:
return false;
}
return true;
}
static void keyboard_handle_key(
struct wl_listener *listener, void *data) {
struct tinywl_keyboard *keyboard =
wl_container_of(listener, keyboard, key);
struct tinywl_server *server = keyboard->server;
struct wlr_event_keyboard_key *event = data;
struct wlr_seat *seat = server->seat;
uint32_t keycode = event->keycode + 8;
const xkb_keysym_t *syms;
int nsyms = xkb_state_key_get_syms(
keyboard->device->keyboard->xkb_state, keycode, &syms);
bool handled = false;
uint32_t modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
if ((modifiers & WLR_MODIFIER_ALT) && event->state == WLR_KEY_PRESSED) {
for (int i = 0; i < nsyms; i++) {
handled = handle_keybinding(server, syms[i]);
}
}
if (!handled) {
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;
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 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 = NULL;
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);
}
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);
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 = 0, oy = 0;
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);
if (!wlr_output_make_current(output->wlr_output, NULL)) {
return;
}
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_renderer_end(renderer);
wlr_output_swap_buffers(output->wlr_output, NULL, NULL);
}
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;
if (!wl_list_empty(&wlr_output->modes)) {
struct wlr_output_mode *mode =
wl_container_of(wlr_output->modes.prev, mode, link);
wlr_output_set_mode(wlr_output, mode);
}
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[]) {
wlr_log_init(WLR_DEBUG, NULL);
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;
}
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