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adopt a bit more dwm-like terseness

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This commit is contained in:
Devin J. Pohly 2020-04-23 21:16:01 -05:00
parent 66bf55930f
commit a5a7445dee
1 changed files with 63 additions and 82 deletions
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135
dwl.c
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@ -171,9 +171,9 @@ static Client *xytoclient(double x, double y,
static Monitor *xytomon(double x, double y); static Monitor *xytomon(double x, double y);
/* variables */ /* variables */
static struct wl_display *wl_display; static struct wl_display *dpy;
static struct wlr_backend *backend; static struct wlr_backend *backend;
static struct wlr_renderer *renderer; static struct wlr_renderer *drw;
static struct wlr_xdg_shell *xdg_shell; static struct wlr_xdg_shell *xdg_shell;
static struct wl_listener new_xdg_surface; static struct wl_listener new_xdg_surface;
@ -258,8 +258,8 @@ buttonpress(struct wl_listener *listener, void *data)
void void
createkeyboard(struct wlr_input_device *device) createkeyboard(struct wlr_input_device *device)
{ {
Keyboard *keyboard = calloc(1, sizeof(*keyboard)); Keyboard *kb = calloc(1, sizeof(*kb));
keyboard->device = device; kb->device = device;
/* Prepare an XKB keymap and assign it to the keyboard. */ /* Prepare an XKB keymap and assign it to the keyboard. */
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS); struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
@ -272,15 +272,15 @@ createkeyboard(struct wlr_input_device *device)
wlr_keyboard_set_repeat_info(device->keyboard, 25, 600); wlr_keyboard_set_repeat_info(device->keyboard, 25, 600);
/* Here we set up listeners for keyboard events. */ /* Here we set up listeners for keyboard events. */
keyboard->modifiers.notify = keypressmod; kb->modifiers.notify = keypressmod;
wl_signal_add(&device->keyboard->events.modifiers, &keyboard->modifiers); wl_signal_add(&device->keyboard->events.modifiers, &kb->modifiers);
keyboard->key.notify = keypress; kb->key.notify = keypress;
wl_signal_add(&device->keyboard->events.key, &keyboard->key); wl_signal_add(&device->keyboard->events.key, &kb->key);
wlr_seat_set_keyboard(seat, device); wlr_seat_set_keyboard(seat, device);
/* And add the keyboard to our list of keyboards */ /* And add the keyboard to our list of keyboards */
wl_list_insert(&keyboards, &keyboard->link); wl_list_insert(&keyboards, &kb->link);
} }
void void
@ -299,17 +299,16 @@ createmon(struct wl_listener *listener, void *data)
struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output); struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
wlr_output_set_mode(wlr_output, mode); wlr_output_set_mode(wlr_output, mode);
wlr_output_enable(wlr_output, true); wlr_output_enable(wlr_output, true);
if (!wlr_output_commit(wlr_output)) { if (!wlr_output_commit(wlr_output))
return; return;
} }
}
/* Allocates and configures monitor state using configured rules */ /* Allocates and configures monitor state using configured rules */
Monitor *m = calloc(1, sizeof(*m)); Monitor *m = calloc(1, sizeof(*m));
m->wlr_output = wlr_output; m->wlr_output = wlr_output;
m->tagset[0] = m->tagset[1] = 1; m->tagset[0] = m->tagset[1] = 1;
int i; int i;
for (i = 0; i < LENGTH(monrules); i++) { for (i = 0; i < LENGTH(monrules); i++)
if (!monrules[i].name || if (!monrules[i].name ||
!strcmp(wlr_output->name, monrules[i].name)) { !strcmp(wlr_output->name, monrules[i].name)) {
m->mfact = monrules[i].mfact; m->mfact = monrules[i].mfact;
@ -319,7 +318,6 @@ createmon(struct wl_listener *listener, void *data)
m->lt[0] = m->lt[1] = monrules[i].lt; m->lt[0] = m->lt[1] = monrules[i].lt;
break; break;
} }
}
/* Sets up a listener for the frame notify event. */ /* Sets up a listener for the frame notify event. */
m->frame.notify = rendermon; m->frame.notify = rendermon;
wl_signal_add(&wlr_output->events.frame, &m->frame); wl_signal_add(&wlr_output->events.frame, &m->frame);
@ -343,9 +341,8 @@ createnotify(struct wl_listener *listener, void *data)
/* This event is raised when wlr_xdg_shell receives a new xdg surface from a /* This event is raised when wlr_xdg_shell receives a new xdg surface from a
* client, either a toplevel (application window) or popup. */ * client, either a toplevel (application window) or popup. */
struct wlr_xdg_surface *xdg_surface = data; struct wlr_xdg_surface *xdg_surface = data;
if (xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) { if (xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL)
return; return;
}
/* Allocate a Client for this surface */ /* Allocate a Client for this surface */
Client *c = calloc(1, sizeof(*c)); Client *c = calloc(1, sizeof(*c));
@ -423,10 +420,9 @@ focus(Client *c, struct wlr_surface *surface)
/* XXX Need to understand xdg toplevel/popups to know if there's more /* XXX Need to understand xdg toplevel/popups to know if there's more
* simplification that can be done in this function */ * simplification that can be done in this function */
struct wlr_surface *prev_surface = seat->keyboard_state.focused_surface; struct wlr_surface *prev_surface = seat->keyboard_state.focused_surface;
if (prev_surface == surface) {
/* Don't re-focus an already focused surface. */ /* Don't re-focus an already focused surface. */
if (prev_surface == surface)
return; return;
}
if (prev_surface) { if (prev_surface) {
/* /*
* Deactivate the previously focused surface. This lets the * Deactivate the previously focused surface. This lets the
@ -523,9 +519,8 @@ inputdevice(struct wl_listener *listener, void *data)
* communiciated to the client. In dwl we always have a cursor, even if * communiciated to the client. In dwl we always have a cursor, even if
* there are no pointer devices, so we always include that capability. */ * there are no pointer devices, so we always include that capability. */
uint32_t caps = WL_SEAT_CAPABILITY_POINTER; uint32_t caps = WL_SEAT_CAPABILITY_POINTER;
if (!wl_list_empty(&keyboards)) { if (!wl_list_empty(&keyboards))
caps |= WL_SEAT_CAPABILITY_KEYBOARD; caps |= WL_SEAT_CAPABILITY_KEYBOARD;
}
wlr_seat_set_capabilities(seat, caps); wlr_seat_set_capabilities(seat, caps);
} }
@ -538,14 +533,13 @@ keybinding(uint32_t mods, xkb_keysym_t sym)
* processing. * processing.
*/ */
bool handled = false; bool handled = false;
for (int i = 0; i < LENGTH(keys); i++) { for (int i = 0; i < LENGTH(keys); i++)
if (sym == keys[i].keysym && if (sym == keys[i].keysym &&
CLEANMASK(mods) == CLEANMASK(keys[i].mod) && CLEANMASK(mods) == CLEANMASK(keys[i].mod) &&
keys[i].func) { keys[i].func) {
keys[i].func(&keys[i].arg); keys[i].func(&keys[i].arg);
handled = true; handled = true;
} }
}
return handled; return handled;
} }
@ -553,8 +547,7 @@ void
keypress(struct wl_listener *listener, void *data) keypress(struct wl_listener *listener, void *data)
{ {
/* This event is raised when a key is pressed or released. */ /* This event is raised when a key is pressed or released. */
Keyboard *keyboard = Keyboard *kb = wl_container_of(listener, kb, key);
wl_container_of(listener, keyboard, key);
struct wlr_event_keyboard_key *event = data; struct wlr_event_keyboard_key *event = data;
/* Translate libinput keycode -> xkbcommon */ /* Translate libinput keycode -> xkbcommon */
@ -562,20 +555,18 @@ keypress(struct wl_listener *listener, void *data)
/* Get a list of keysyms based on the keymap for this keyboard */ /* Get a list of keysyms based on the keymap for this keyboard */
const xkb_keysym_t *syms; const xkb_keysym_t *syms;
int nsyms = xkb_state_key_get_syms( int nsyms = xkb_state_key_get_syms(
keyboard->device->keyboard->xkb_state, keycode, &syms); kb->device->keyboard->xkb_state, keycode, &syms);
bool handled = false; bool handled = false;
uint32_t mods = wlr_keyboard_get_modifiers(keyboard->device->keyboard); uint32_t mods = wlr_keyboard_get_modifiers(kb->device->keyboard);
if (event->state == WLR_KEY_PRESSED) {
/* On _press_, attempt to process a compositor keybinding. */ /* On _press_, attempt to process a compositor keybinding. */
for (int i = 0; i < nsyms; i++) { if (event->state == WLR_KEY_PRESSED)
for (int i = 0; i < nsyms; i++)
handled = keybinding(mods, syms[i]) || handled; handled = keybinding(mods, syms[i]) || handled;
}
}
if (!handled) { if (!handled) {
/* Otherwise, we pass it along to the client. */ /* Otherwise, we pass it along to the client. */
wlr_seat_set_keyboard(seat, keyboard->device); wlr_seat_set_keyboard(seat, kb->device);
wlr_seat_keyboard_notify_key(seat, event->time_msec, wlr_seat_keyboard_notify_key(seat, event->time_msec,
event->keycode, event->state); event->keycode, event->state);
} }
@ -586,17 +577,17 @@ keypressmod(struct wl_listener *listener, void *data)
{ {
/* This event is raised when a modifier key, such as shift or alt, is /* This event is raised when a modifier key, such as shift or alt, is
* pressed. We simply communicate this to the client. */ * pressed. We simply communicate this to the client. */
Keyboard *keyboard = wl_container_of(listener, keyboard, modifiers); Keyboard *kb = wl_container_of(listener, kb, modifiers);
/* /*
* A seat can only have one keyboard, but this is a limitation of the * A seat can only have one keyboard, but this is a limitation of the
* Wayland protocol - not wlroots. We assign all connected keyboards to the * Wayland protocol - not wlroots. We assign all connected keyboards to the
* same seat. You can swap out the underlying wlr_keyboard like this and * same seat. You can swap out the underlying wlr_keyboard like this and
* wlr_seat handles this transparently. * wlr_seat handles this transparently.
*/ */
wlr_seat_set_keyboard(seat, keyboard->device); wlr_seat_set_keyboard(seat, kb->device);
/* Send modifiers to the client. */ /* Send modifiers to the client. */
wlr_seat_keyboard_notify_modifiers(seat, wlr_seat_keyboard_notify_modifiers(seat,
&keyboard->device->keyboard->modifiers); &kb->device->keyboard->modifiers);
} }
void void
@ -655,13 +646,12 @@ motionnotify(uint32_t time)
double sx, sy; double sx, sy;
struct wlr_surface *surface = NULL; struct wlr_surface *surface = NULL;
Client *c = xytoclient(cursor->x, cursor->y, &surface, &sx, &sy); Client *c = xytoclient(cursor->x, cursor->y, &surface, &sx, &sy);
if (!c) {
/* If there's no client under the cursor, set the cursor image to a /* If there's no client under the cursor, set the cursor image to a
* default. This is what makes the cursor image appear when you move it * default. This is what makes the cursor image appear when you move it
* around the screen, not over any clients. */ * around the screen, not over any clients. */
if (!c)
wlr_xcursor_manager_set_cursor_image( wlr_xcursor_manager_set_cursor_image(
cursor_mgr, "left_ptr", cursor); cursor_mgr, "left_ptr", cursor);
}
if (!surface) { if (!surface) {
/* Clear pointer focus so future button events and such are not sent to /* Clear pointer focus so future button events and such are not sent to
* the last client to have the cursor over it. */ * the last client to have the cursor over it. */
@ -712,11 +702,9 @@ movemouse(const Arg *arg)
{ {
double sx, sy; double sx, sy;
struct wlr_surface *surface; struct wlr_surface *surface;
Client *c = xytoclient(cursor->x, cursor->y, Client *c = xytoclient(cursor->x, cursor->y, &surface, &sx, &sy);
&surface, &sx, &sy); if (!c)
if (!c) {
return; return;
}
/* Prepare for moving client in motionnotify */ /* Prepare for moving client in motionnotify */
grabc = c; grabc = c;
@ -731,7 +719,7 @@ movemouse(const Arg *arg)
void void
quit(const Arg *arg) quit(const Arg *arg)
{ {
wl_display_terminate(wl_display); wl_display_terminate(dpy);
} }
void void
@ -760,9 +748,8 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
* could have sent a pixel buffer which we copied to the GPU, or a few other * could have sent a pixel buffer which we copied to the GPU, or a few other
* means. You don't have to worry about this, wlroots takes care of it. */ * means. You don't have to worry about this, wlroots takes care of it. */
struct wlr_texture *texture = wlr_surface_get_texture(surface); struct wlr_texture *texture = wlr_surface_get_texture(surface);
if (texture == NULL) { if (!texture)
return; return;
}
/* The client has a position in layout coordinates. If you have two displays, /* The client has a position in layout coordinates. If you have two displays,
* one next to the other, both 1080p, a client on the rightmost display might * one next to the other, both 1080p, a client on the rightmost display might
@ -801,7 +788,7 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
/* This takes our matrix, the texture, and an alpha, and performs the actual /* This takes our matrix, the texture, and an alpha, and performs the actual
* rendering on the GPU. */ * rendering on the GPU. */
wlr_render_texture_with_matrix(renderer, texture, matrix, 1); wlr_render_texture_with_matrix(drw, texture, matrix, 1);
/* This lets the client know that we've displayed that frame and it can /* This lets the client know that we've displayed that frame and it can
* prepare another one now if it likes. */ * prepare another one now if it likes. */
@ -819,9 +806,8 @@ rendermon(struct wl_listener *listener, void *data)
clock_gettime(CLOCK_MONOTONIC, &now); clock_gettime(CLOCK_MONOTONIC, &now);
/* wlr_output_attach_render makes the OpenGL context current. */ /* wlr_output_attach_render makes the OpenGL context current. */
if (!wlr_output_attach_render(m->wlr_output, NULL)) { if (!wlr_output_attach_render(m->wlr_output, NULL))
return; return;
}
/* Get effective monitor geometry and window area */ /* Get effective monitor geometry and window area */
m->geom = wlr_output_layout_get_box(output_layout, m->wlr_output); m->geom = wlr_output_layout_get_box(output_layout, m->wlr_output);
m->wx = m->geom->x; m->wx = m->geom->x;
@ -832,8 +818,8 @@ rendermon(struct wl_listener *listener, void *data)
arrange(m); arrange(m);
/* Begin the renderer (calls glViewport and some other GL sanity checks) */ /* Begin the renderer (calls glViewport and some other GL sanity checks) */
wlr_renderer_begin(renderer, m->wlr_output->width, m->wlr_output->height); wlr_renderer_begin(drw, m->wlr_output->width, m->wlr_output->height);
wlr_renderer_clear(renderer, rootcolor); wlr_renderer_clear(drw, rootcolor);
/* Each subsequent window we render is rendered on top of the last. Because /* Each subsequent window we render is rendered on top of the last. Because
* our client list is ordered front-to-back, we iterate over it backwards. */ * our client list is ordered front-to-back, we iterate over it backwards. */
@ -866,7 +852,7 @@ rendermon(struct wl_listener *listener, void *data)
/* Conclude rendering and swap the buffers, showing the final frame /* Conclude rendering and swap the buffers, showing the final frame
* on-screen. */ * on-screen. */
wlr_renderer_end(renderer); wlr_renderer_end(drw);
wlr_output_commit(m->wlr_output); wlr_output_commit(m->wlr_output);
} }
@ -883,11 +869,10 @@ resizemouse(const Arg *arg)
{ {
double sx, sy; double sx, sy;
struct wlr_surface *surface; struct wlr_surface *surface;
Client *c = xytoclient(cursor->x, cursor->y, Client *c = xytoclient(cursor->x, cursor->y, &surface, &sx, &sy);
&surface, &sx, &sy); if (!c)
if (!c) {
return; return;
}
struct wlr_box sbox; struct wlr_box sbox;
wlr_xdg_surface_get_geometry(c->xdg_surface, &sbox); wlr_xdg_surface_get_geometry(c->xdg_surface, &sbox);
/* Doesn't work for X11 output - the next absolute motion event /* Doesn't work for X11 output - the next absolute motion event
@ -910,7 +895,7 @@ run(char *startup_cmd)
pid_t startup_pid = -1; pid_t startup_pid = -1;
/* Add a Unix socket to the Wayland display. */ /* Add a Unix socket to the Wayland display. */
const char *socket = wl_display_add_socket_auto(wl_display); const char *socket = wl_display_add_socket_auto(dpy);
if (!socket) { if (!socket) {
wlr_backend_destroy(backend); wlr_backend_destroy(backend);
exit(1); exit(1);
@ -920,7 +905,7 @@ run(char *startup_cmd)
* master, etc */ * master, etc */
if (!wlr_backend_start(backend)) { if (!wlr_backend_start(backend)) {
wlr_backend_destroy(backend); wlr_backend_destroy(backend);
wl_display_destroy(wl_display); wl_display_destroy(dpy);
exit(1); exit(1);
} }
@ -940,13 +925,13 @@ run(char *startup_cmd)
startup_pid = fork(); startup_pid = fork();
if (startup_pid < 0) { if (startup_pid < 0) {
perror("startup: fork"); perror("startup: fork");
wl_display_destroy(wl_display); wl_display_destroy(dpy);
exit(1); exit(1);
} }
if (startup_pid == 0) { if (startup_pid == 0) {
execl("/bin/sh", "/bin/sh", "-c", startup_cmd, (void *)NULL); execl("/bin/sh", "/bin/sh", "-c", startup_cmd, (void *)NULL);
perror("startup: execl"); perror("startup: execl");
wl_display_destroy(wl_display); wl_display_destroy(dpy);
exit(1); exit(1);
} }
} }
@ -956,7 +941,7 @@ run(char *startup_cmd)
* frame events at the refresh rate, and so on. */ * frame events at the refresh rate, and so on. */
wlr_log(WLR_INFO, "Running Wayland compositor on WAYLAND_DISPLAY=%s", wlr_log(WLR_INFO, "Running Wayland compositor on WAYLAND_DISPLAY=%s",
socket); socket);
wl_display_run(wl_display); wl_display_run(dpy);
if (startup_cmd) { if (startup_cmd) {
kill(startup_pid, SIGTERM); kill(startup_pid, SIGTERM);
@ -990,18 +975,14 @@ setcursor(struct wl_listener *listener, void *data)
{ {
/* This event is raised by the seat when a client provides a cursor image */ /* This event is raised by the seat when a client provides a cursor image */
struct wlr_seat_pointer_request_set_cursor_event *event = data; struct wlr_seat_pointer_request_set_cursor_event *event = data;
struct wlr_seat_client *focused_client =
seat->pointer_state.focused_client;
/* This can be sent by any client, so we check to make sure this one is /* This can be sent by any client, so we check to make sure this one is
* actually has pointer focus first. */ * actually has pointer focus first. If so, we can tell the cursor to
if (focused_client == event->seat_client) { * use the provided surface as the cursor image. It will set the
/* Once we've vetted the client, we can tell the cursor to use the * hardware cursor on the output that it's currently on and continue to
* provided surface as the cursor image. It will set the hardware cursor * do so as the cursor moves between outputs. */
* on the output that it's currently on and continue to do so as the if (event->seat_client == seat->pointer_state.focused_client)
* cursor moves between outputs. */
wlr_cursor_set_surface(cursor, event->surface, wlr_cursor_set_surface(cursor, event->surface,
event->hotspot_x, event->hotspot_y); event->hotspot_x, event->hotspot_y);
}
} }
void void
@ -1039,20 +1020,20 @@ setup(void)
* backend uses the renderer, for example, to fall back to software cursors * backend uses the renderer, for example, to fall back to software cursors
* if the backend does not support hardware cursors (some older GPUs * if the backend does not support hardware cursors (some older GPUs
* don't). */ * don't). */
backend = wlr_backend_autocreate(wl_display, NULL); backend = wlr_backend_autocreate(dpy, NULL);
/* If we don't provide a renderer, autocreate makes a GLES2 renderer for us. /* If we don't provide a renderer, autocreate makes a GLES2 renderer for us.
* The renderer is responsible for defining the various pixel formats it * The renderer is responsible for defining the various pixel formats it
* supports for shared memory, this configures that for clients. */ * supports for shared memory, this configures that for clients. */
renderer = wlr_backend_get_renderer(backend); drw = wlr_backend_get_renderer(backend);
wlr_renderer_init_wl_display(renderer, wl_display); wlr_renderer_init_wl_display(drw, dpy);
/* This creates some hands-off wlroots interfaces. The compositor is /* This creates some hands-off wlroots interfaces. The compositor is
* necessary for clients to allocate surfaces and the data device manager * necessary for clients to allocate surfaces and the data device manager
* handles the clipboard. Each of these wlroots interfaces has room for you * handles the clipboard. Each of these wlroots interfaces has room for you
* to dig your fingers in and play with their behavior if you want. */ * to dig your fingers in and play with their behavior if you want. */
wlr_compositor_create(wl_display, renderer); wlr_compositor_create(dpy, drw);
wlr_data_device_manager_create(wl_display); wlr_data_device_manager_create(dpy);
/* Creates an output layout, which a wlroots utility for working with an /* Creates an output layout, which a wlroots utility for working with an
* arrangement of screens in a physical layout. */ * arrangement of screens in a physical layout. */
@ -1072,7 +1053,7 @@ setup(void)
*/ */
wl_list_init(&clients); wl_list_init(&clients);
wl_list_init(&fstack); wl_list_init(&fstack);
xdg_shell = wlr_xdg_shell_create(wl_display); xdg_shell = wlr_xdg_shell_create(dpy);
new_xdg_surface.notify = createnotify; new_xdg_surface.notify = createnotify;
wl_signal_add(&xdg_shell->events.new_surface, wl_signal_add(&xdg_shell->events.new_surface,
&new_xdg_surface); &new_xdg_surface);
@ -1123,7 +1104,7 @@ setup(void)
wl_list_init(&keyboards); wl_list_init(&keyboards);
new_input.notify = inputdevice; new_input.notify = inputdevice;
wl_signal_add(&backend->events.new_input, &new_input); wl_signal_add(&backend->events.new_input, &new_input);
seat = wlr_seat_create(wl_display, "seat0"); seat = wlr_seat_create(dpy, "seat0");
request_cursor.notify = setcursor; request_cursor.notify = setcursor;
wl_signal_add(&seat->events.request_set_cursor, wl_signal_add(&seat->events.request_set_cursor,
&request_cursor); &request_cursor);
@ -1279,7 +1260,7 @@ xytoclient(double x, double y,
_surface = wlr_xdg_surface_surface_at(c->xdg_surface, _surface = wlr_xdg_surface_surface_at(c->xdg_surface,
x - c->x, y - c->y, &_sx, &_sy); x - c->x, y - c->y, &_sx, &_sy);
if (_surface != NULL) { if (_surface) {
*sx = _sx; *sx = _sx;
*sy = _sy; *sy = _sy;
*surface = _surface; *surface = _surface;
@ -1324,13 +1305,13 @@ main(int argc, char *argv[])
/* The Wayland display is managed by libwayland. It handles accepting /* The Wayland display is managed by libwayland. It handles accepting
* clients from the Unix socket, manging Wayland globals, and so on. */ * clients from the Unix socket, manging Wayland globals, and so on. */
wl_display = wl_display_create(); dpy = wl_display_create();
setup(); setup();
run(startup_cmd); run(startup_cmd);
/* Once wl_display_run returns, we shut down the server. */ /* Once wl_display_run returns, we shut down the server. */
wl_display_destroy_clients(wl_display); wl_display_destroy_clients(dpy);
wl_display_destroy(wl_display); wl_display_destroy(dpy);
return 0; return 0;
} }