~ruther/dwl

2903d5180ac36f867f14fd931fad242baf61d9b1 — Devin J. Pohly 5 years ago 2c0bf57 
alphabetize functions
patch browse .tar.gz 
1 files changed, 494 insertions(+), 460 deletions(-)

M dwl.c

M dwl.c => dwl.c +494 -460
@@ 121,162 121,107 @@ typedef struct {
	const Arg arg;
} Button;

static void focusnext(struct dwl_server *, const Arg *);
static void movemouse(struct dwl_server *, const Arg *);
static void quit(struct dwl_server *, const Arg *);
static void resizemouse(struct dwl_server *, const Arg *);
static void spawn(struct dwl_server *, const Arg *);
/* function declarations */
static void axisnotify(struct wl_listener *listener, void *data);
static void buttonpress(struct wl_listener *listener, void *data);
static void createkeyboard(struct dwl_server *server,
		struct wlr_input_device *device);
static void createnotify(struct wl_listener *listener, void *data);
static void createoutput(struct wl_listener *listener, void *data);
static void createpointer(struct dwl_server *server,
		struct wlr_input_device *device);
static void cursorframe(struct wl_listener *listener, void *data);
static void destroynotify(struct wl_listener *listener, void *data);
static void focus(struct dwl_view *view, struct wlr_surface *surface);
static void focusnext(struct dwl_server *server, const Arg *arg);
static void handlemove(struct dwl_server *server, uint32_t time);
static void handleresize(struct dwl_server *server, uint32_t time);
static void inputdevice(struct wl_listener *listener, void *data);
static bool keybinding(struct dwl_server *server, uint32_t mods, xkb_keysym_t sym);
static void keypress(struct wl_listener *listener, void *data);
static void keypressmod(struct wl_listener *listener, void *data);
static void maprequest(struct wl_listener *listener, void *data);
static void motionabsolute(struct wl_listener *listener, void *data);
static void motionnotify(struct dwl_server *server, uint32_t time);
static void motionrelative(struct wl_listener *listener, void *data);
static void movemouse(struct dwl_server *server, const Arg *arg);
static void moverequest(struct wl_listener *listener, void *data);
static void moveresize(struct dwl_view *view, enum dwl_cursor_mode mode,
		uint32_t edges);
static void quit(struct dwl_server *server, const Arg *arg);
static void render(struct wlr_surface *surface, int sx, int sy, void *data);
static void renderoutput(struct wl_listener *listener, void *data);
static void resizemouse(struct dwl_server *server, const Arg *arg);
static void resizerequest(struct wl_listener *listener, void *data);
static void setcursor(struct wl_listener *listener, void *data);
static void spawn(struct dwl_server *server, const Arg *arg);
static void unmapnotify(struct wl_listener *listener, void *data);
static bool xytosurface(struct dwl_view *view, double lx, double ly,
		struct wlr_surface **surface, double *sx, double *sy);
static struct dwl_view * xytoview(struct dwl_server *server, double lx, double ly,
		struct wlr_surface **surface, double *sx, double *sy);

#include "config.h"

static void
focus(struct dwl_view *view, struct wlr_surface *surface)
{
	/* Note: this function only deals with keyboard focus. */
	if (view == NULL) {
		return;
	}
	struct dwl_server *server = view->server;
	struct wlr_seat *seat = server->seat;
	struct wlr_surface *prev_surface = seat->keyboard_state.focused_surface;
	if (prev_surface == surface) {
		/* Don't re-focus an already focused surface. */
		return;
	}
	if (prev_surface) {
		/*
		 * Deactivate the previously focused surface. This lets the client know
		 * it no longer has focus and the client will repaint accordingly, e.g.
		 * stop displaying a caret.
		 */
		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);
	/* Move the view to the front */
	wl_list_remove(&view->link);
	wl_list_insert(&server->views, &view->link);
	/* Activate the new surface */
	wlr_xdg_toplevel_set_activated(view->xdg_surface, true);
	/*
	 * Tell the seat to have the keyboard enter this surface. wlroots will keep
	 * track of this and automatically send key events to the appropriate
	 * clients without additional work on your part.
	 */
	wlr_seat_keyboard_notify_enter(seat, view->xdg_surface->surface,
		keyboard->keycodes, keyboard->num_keycodes, &keyboard->modifiers);
}

static void
keypressmod(struct wl_listener *listener, void *data)
{
	/* This event is raised when a modifier key, such as shift or alt, is
	 * pressed. We simply communicate this to the client. */
	struct dwl_keyboard *keyboard =
		wl_container_of(listener, keyboard, modifiers);
	/*
	 * 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
	 * same seat. You can swap out the underlying wlr_keyboard like this and
	 * wlr_seat handles this transparently.
	 */
	wlr_seat_set_keyboard(keyboard->server->seat, keyboard->device);
	/* Send modifiers to the client. */
	wlr_seat_keyboard_notify_modifiers(keyboard->server->seat,
		&keyboard->device->keyboard->modifiers);
}

static void
quit(struct dwl_server *server, const Arg *arg)
{
	wl_display_terminate(server->wl_display);
}

static void
spawn(struct dwl_server *server, const Arg *arg)
{
	if (fork() == 0) {
		setsid();
		execvp(((char **)arg->v)[0], (char **)arg->v);
		fprintf(stderr, "dwl: execvp %s", ((char **)arg->v)[0]);
		perror(" failed");
		exit(EXIT_FAILURE);
	}
}

static void
focusnext(struct dwl_server *server, const Arg *arg)
{
	/* Cycle to the next view */
	if (wl_list_length(&server->views) < 2) {
		return;
	}
	struct dwl_view *current_view = wl_container_of(
		server->views.next, current_view, link);
	struct dwl_view *next_view = wl_container_of(
		current_view->link.next, next_view, link);
	focus(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);
}
/* Used to move all of the data necessary to render a surface from the top-level
 * frame handler to the per-surface render function. */
struct render_data {
	struct wlr_output *output;
	struct wlr_renderer *renderer;
	struct dwl_view *view;
	struct timespec *when;
};

static bool
keybinding(struct dwl_server *server, uint32_t mods, xkb_keysym_t sym)
void
axisnotify(struct wl_listener *listener, void *data)
{
	/*
	 * Here we handle compositor keybindings. This is when the compositor is
	 * processing keys, rather than passing them on to the client for its own
	 * processing.
	 */
	bool handled = false;
	for (int i = 0; i < LENGTH(keys); i++) {
		if (sym == keys[i].keysym &&
				CLEANMASK(mods) == CLEANMASK(keys[i].mod) &&
				keys[i].func) {
			keys[i].func(server, &keys[i].arg);
			handled = true;
		}
	}
	return handled;
	/* This event is forwarded by the cursor when a pointer emits an axis event,
	 * for example when you move the scroll wheel. */
	struct dwl_server *server =
		wl_container_of(listener, server, cursor_axis);
	struct wlr_event_pointer_axis *event = data;
	/* Notify the client with pointer focus of the axis event. */
	wlr_seat_pointer_notify_axis(server->seat,
			event->time_msec, event->orientation, event->delta,
			event->delta_discrete, event->source);
}

static void
keypress(struct wl_listener *listener, void *data)
void
buttonpress(struct wl_listener *listener, void *data)
{
	/* This event is raised when a key is pressed or released. */
	struct dwl_keyboard *keyboard =
		wl_container_of(listener, keyboard, key);
	struct dwl_server *server = keyboard->server;
	struct wlr_event_keyboard_key *event = data;
	/* This event is forwarded by the cursor when a pointer emits a button
	 * event. */
	struct dwl_server *server =
		wl_container_of(listener, server, cursor_button);
	struct wlr_event_pointer_button *event = data;
	/* Notify the client with pointer focus that a button press has occurred */
	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 dwl_view *view = xytoview(server,
			server->cursor->x, server->cursor->y, &surface, &sx, &sy);
	if (event->state == WLR_BUTTON_RELEASED) {
		/* If you released any buttons, we exit interactive move/resize mode. */
		server->cursor_mode = DWL_CURSOR_PASSTHROUGH;
	} else {
		/* Focus that client if the button was _pressed_ */
		focus(view, surface);

	/* Translate libinput keycode -> xkbcommon */
	uint32_t keycode = event->keycode + 8;
	/* Get a list of keysyms based on the keymap for this keyboard */
	const xkb_keysym_t *syms;
	int nsyms = xkb_state_key_get_syms(
			keyboard->device->keyboard->xkb_state, keycode, &syms);

	bool handled = false;
	uint32_t mods = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
	if (event->state == WLR_KEY_PRESSED) {
		/* On _press_, attempt to process a compositor keybinding. */
		for (int i = 0; i < nsyms; i++) {
			handled = keybinding(server, mods, syms[i]) || handled;
		struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat);
		uint32_t mods = wlr_keyboard_get_modifiers(keyboard);
		for (int i = 0; i < LENGTH(buttons); i++) {
			if (event->button == buttons[i].button &&
					CLEANMASK(mods) == CLEANMASK(buttons[i].mod) &&
					buttons[i].func) {
				buttons[i].func(server, &buttons[i].arg);
			}
		}
	}

	if (!handled) {
		/* Otherwise, we pass it along to the client. */
		wlr_seat_set_keyboard(seat, keyboard->device);
		wlr_seat_keyboard_notify_key(seat, event->time_msec,
			event->keycode, event->state);
	}
}

static void
void
createkeyboard(struct dwl_server *server, struct wlr_input_device *device)
{
	struct dwl_keyboard *keyboard =


@@ 307,7 252,89 @@ createkeyboard(struct dwl_server *server, struct wlr_input_device *device)
	wl_list_insert(&server->keyboards, &keyboard->link);
}

static void
void
createnotify(struct wl_listener *listener, void *data)
{
	/* This event is raised when wlr_xdg_shell receives a new xdg surface from a
	 * client, either a toplevel (application window) or popup. */
	struct dwl_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;
	}

	/* Allocate a dwl_view for this surface */
	struct dwl_view *view =
		calloc(1, sizeof(struct dwl_view));
	view->server = server;
	view->xdg_surface = xdg_surface;

	/* Listen to the various events it can emit */
	view->map.notify = maprequest;
	wl_signal_add(&xdg_surface->events.map, &view->map);
	view->unmap.notify = unmapnotify;
	wl_signal_add(&xdg_surface->events.unmap, &view->unmap);
	view->destroy.notify = destroynotify;
	wl_signal_add(&xdg_surface->events.destroy, &view->destroy);

	/* cotd */
	struct wlr_xdg_toplevel *toplevel = xdg_surface->toplevel;
	view->request_move.notify = moverequest;
	wl_signal_add(&toplevel->events.request_move, &view->request_move);
	view->request_resize.notify = resizerequest;
	wl_signal_add(&toplevel->events.request_resize, &view->request_resize);

	/* Add it to the list of views. */
	wl_list_insert(&server->views, &view->link);
}

void
createoutput(struct wl_listener *listener, void *data)
{
	/* This event is rasied by the backend when a new output (aka a display or
	 * monitor) becomes available. */
	struct dwl_server *server =
		wl_container_of(listener, server, new_output);
	struct wlr_output *wlr_output = data;

	/* Some backends don't have modes. DRM+KMS does, and we need to set a mode
	 * before we can use the output. The mode is a tuple of (width, height,
	 * refresh rate), and each monitor supports only a specific set of modes. We
	 * just pick the monitor's preferred mode, a more sophisticated compositor
	 * would let the user configure it. */
	if (!wl_list_empty(&wlr_output->modes)) {
		struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
		wlr_output_set_mode(wlr_output, mode);
		wlr_output_enable(wlr_output, true);
		if (!wlr_output_commit(wlr_output)) {
			return;
		}
	}

	/* Allocates and configures our state for this output */
	struct dwl_output *output =
		calloc(1, sizeof(struct dwl_output));
	output->wlr_output = wlr_output;
	output->server = server;
	/* Sets up a listener for the frame notify event. */
	output->frame.notify = renderoutput;
	wl_signal_add(&wlr_output->events.frame, &output->frame);
	wl_list_insert(&server->outputs, &output->link);

	/* Adds this to the output layout. The add_auto function arranges outputs
	 * from left-to-right in the order they appear. A more sophisticated
	 * compositor would let the user configure the arrangement of outputs in the
	 * layout. */
	wlr_output_layout_add_auto(server->output_layout, wlr_output);

	/* Creating the global adds a wl_output global to the display, which Wayland
	 * clients can see to find out information about the output (such as
	 * DPI, scale factor, manufacturer, etc). */
	wlr_output_create_global(wlr_output);
}

void
createpointer(struct dwl_server *server, struct wlr_input_device *device)
{
	/* We don't do anything special with pointers. All of our pointer handling


@@ 317,102 344,85 @@ createpointer(struct dwl_server *server, struct wlr_input_device *device)
	wlr_cursor_attach_input_device(server->cursor, device);
}

static void
inputdevice(struct wl_listener *listener, void *data)
void
cursorframe(struct wl_listener *listener, void *data)
{
	/* This event is raised by the backend when a new input device becomes
	 * available. */
	/* This event is forwarded by the cursor when a pointer emits an frame
	 * event. Frame events are sent after regular pointer events to group
	 * multiple events together. For instance, two axis events may happen at the
	 * same time, in which case a frame event won't be sent in between. */
	struct dwl_server *server =
		wl_container_of(listener, server, new_input);
	struct wlr_input_device *device = data;
	switch (device->type) {
	case WLR_INPUT_DEVICE_KEYBOARD:
		createkeyboard(server, device);
		break;
	case WLR_INPUT_DEVICE_POINTER:
		createpointer(server, device);
		break;
	default:
		break;
	}
	/* We need to let the wlr_seat know what our capabilities are, which is
	 * communiciated to the client. In dwl we always have a cursor, even if
	 * there are no pointer devices, so we always include that capability. */
	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);
		wl_container_of(listener, server, cursor_frame);
	/* Notify the client with pointer focus of the frame event. */
	wlr_seat_pointer_notify_frame(server->seat);
}

static void
setcursor(struct wl_listener *listener, void *data)
void
destroynotify(struct wl_listener *listener, void *data)
{
	struct dwl_server *server = wl_container_of(
			listener, server, request_cursor);
	/* This event is rasied by the seat when a client provides a cursor image */
	struct wlr_seat_pointer_request_set_cursor_event *event = data;
	struct wlr_seat_client *focused_client =
		server->seat->pointer_state.focused_client;
	/* This can be sent by any client, so we check to make sure this one is
	 * actually has pointer focus first. */
	if (focused_client == event->seat_client) {
		/* Once we've vetted the client, we can tell the cursor to use the
		 * provided surface as the cursor image. It will set the hardware cursor
		 * on the output that it's currently on and continue to do so as the
		 * cursor moves between outputs. */
		wlr_cursor_set_surface(server->cursor, event->surface,
				event->hotspot_x, event->hotspot_y);
	}
	/* Called when the surface is destroyed and should never be shown again. */
	struct dwl_view *view = wl_container_of(listener, view, destroy);
	wl_list_remove(&view->link);
	free(view);
}

static bool
xytosurface(struct dwl_view *view, double lx, double ly,
		struct wlr_surface **surface, double *sx, double *sy)
void
focus(struct dwl_view *view, struct wlr_surface *surface)
{
	/* Note: this function only deals with keyboard focus. */
	if (view == NULL) {
		return;
	}
	struct dwl_server *server = view->server;
	struct wlr_seat *seat = server->seat;
	struct wlr_surface *prev_surface = seat->keyboard_state.focused_surface;
	if (prev_surface == surface) {
		/* Don't re-focus an already focused surface. */
		return;
	}
	if (prev_surface) {
		/*
		 * Deactivate the previously focused surface. This lets the client know
		 * it no longer has focus and the client will repaint accordingly, e.g.
		 * stop displaying a caret.
		 */
		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);
	/* Move the view to the front */
	wl_list_remove(&view->link);
	wl_list_insert(&server->views, &view->link);
	/* Activate the new surface */
	wlr_xdg_toplevel_set_activated(view->xdg_surface, true);
	/*
	 * XDG toplevels may have nested surfaces, such as popup windows for context
	 * menus or tooltips. This function tests if any of those are underneath the
	 * coordinates lx and ly (in output Layout Coordinates). If so, it sets the
	 * surface pointer to that wlr_surface and the sx and sy coordinates to the
	 * coordinates relative to that surface's top-left corner.
	 * Tell the seat to have the keyboard enter this surface. wlroots will keep
	 * track of this and automatically send key events to the appropriate
	 * clients without additional work on your part.
	 */
	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;
	wlr_seat_keyboard_notify_enter(seat, view->xdg_surface->surface,
		keyboard->keycodes, keyboard->num_keycodes, &keyboard->modifiers);
}

static struct dwl_view *
xytoview(struct dwl_server *server, double lx, double ly,
		struct wlr_surface **surface, double *sx, double *sy)
void
focusnext(struct dwl_server *server, const Arg *arg)
{
	/* This iterates over all of our surfaces and attempts to find one under the
	 * cursor. This relies on server->views being ordered from top-to-bottom. */
	struct dwl_view *view;
	wl_list_for_each(view, &server->views, link) {
		if (xytosurface(view, lx, ly, surface, sx, sy)) {
			return view;
		}
	/* Cycle to the next view */
	if (wl_list_length(&server->views) < 2) {
		return;
	}
	return NULL;
	struct dwl_view *current_view = wl_container_of(
		server->views.next, current_view, link);
	struct dwl_view *next_view = wl_container_of(
		current_view->link.next, next_view, link);
	focus(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);
}

static void
void
handlemove(struct dwl_server *server, uint32_t time)
{
	/* Move the grabbed view to the new position. */


@@ 420,7 430,7 @@ handlemove(struct dwl_server *server, uint32_t time)
	server->grabbed_view->y = server->cursor->y - server->grab_y;
}

static void
void
handleresize(struct dwl_server *server, uint32_t time)
{
	/*


@@ 463,7 473,134 @@ handleresize(struct dwl_server *server, uint32_t time)
	wlr_xdg_toplevel_set_size(view->xdg_surface, width, height);
}

static void motionnotify(struct dwl_server *server, uint32_t time)
void
inputdevice(struct wl_listener *listener, void *data)
{
	/* This event is raised by the backend when a new input device becomes
	 * available. */
	struct dwl_server *server =
		wl_container_of(listener, server, new_input);
	struct wlr_input_device *device = data;
	switch (device->type) {
	case WLR_INPUT_DEVICE_KEYBOARD:
		createkeyboard(server, device);
		break;
	case WLR_INPUT_DEVICE_POINTER:
		createpointer(server, device);
		break;
	default:
		break;
	}
	/* We need to let the wlr_seat know what our capabilities are, which is
	 * communiciated to the client. In dwl we always have a cursor, even if
	 * there are no pointer devices, so we always include that capability. */
	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);
}

bool
keybinding(struct dwl_server *server, uint32_t mods, xkb_keysym_t sym)
{
	/*
	 * Here we handle compositor keybindings. This is when the compositor is
	 * processing keys, rather than passing them on to the client for its own
	 * processing.
	 */
	bool handled = false;
	for (int i = 0; i < LENGTH(keys); i++) {
		if (sym == keys[i].keysym &&
				CLEANMASK(mods) == CLEANMASK(keys[i].mod) &&
				keys[i].func) {
			keys[i].func(server, &keys[i].arg);
			handled = true;
		}
	}
	return handled;
}

void
keypress(struct wl_listener *listener, void *data)
{
	/* This event is raised when a key is pressed or released. */
	struct dwl_keyboard *keyboard =
		wl_container_of(listener, keyboard, key);
	struct dwl_server *server = keyboard->server;
	struct wlr_event_keyboard_key *event = data;
	struct wlr_seat *seat = server->seat;

	/* Translate libinput keycode -> xkbcommon */
	uint32_t keycode = event->keycode + 8;
	/* Get a list of keysyms based on the keymap for this keyboard */
	const xkb_keysym_t *syms;
	int nsyms = xkb_state_key_get_syms(
			keyboard->device->keyboard->xkb_state, keycode, &syms);

	bool handled = false;
	uint32_t mods = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
	if (event->state == WLR_KEY_PRESSED) {
		/* On _press_, attempt to process a compositor keybinding. */
		for (int i = 0; i < nsyms; i++) {
			handled = keybinding(server, mods, syms[i]) || handled;
		}
	}

	if (!handled) {
		/* Otherwise, we pass it along to the client. */
		wlr_seat_set_keyboard(seat, keyboard->device);
		wlr_seat_keyboard_notify_key(seat, event->time_msec,
			event->keycode, event->state);
	}
}

void
keypressmod(struct wl_listener *listener, void *data)
{
	/* This event is raised when a modifier key, such as shift or alt, is
	 * pressed. We simply communicate this to the client. */
	struct dwl_keyboard *keyboard =
		wl_container_of(listener, keyboard, modifiers);
	/*
	 * 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
	 * same seat. You can swap out the underlying wlr_keyboard like this and
	 * wlr_seat handles this transparently.
	 */
	wlr_seat_set_keyboard(keyboard->server->seat, keyboard->device);
	/* Send modifiers to the client. */
	wlr_seat_keyboard_notify_modifiers(keyboard->server->seat,
		&keyboard->device->keyboard->modifiers);
}

void
maprequest(struct wl_listener *listener, void *data)
{
	/* Called when the surface is mapped, or ready to display on-screen. */
	struct dwl_view *view = wl_container_of(listener, view, map);
	view->mapped = true;
	focus(view, view->xdg_surface->surface);
}

void
motionabsolute(struct wl_listener *listener, void *data)
{
	/* This event is forwarded by the cursor when a pointer emits an _absolute_
	 * motion event, from 0..1 on each axis. This happens, for example, when
	 * wlroots is running under a Wayland window rather than KMS+DRM, and you
	 * move the mouse over the window. You could enter the window from any edge,
	 * so we have to warp the mouse there. There is also some hardware which
	 * emits these events. */
	struct dwl_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);
	motionnotify(server, event->time_msec);
}

void
motionnotify(struct dwl_server *server, uint32_t time)
{
	/* If the mode is non-passthrough, delegate to those functions. */
	if (server->cursor_mode == DWL_CURSOR_MOVE) {


@@ 510,7 647,7 @@ static void motionnotify(struct dwl_server *server, uint32_t time)
	}
}

static void
void
motionrelative(struct wl_listener *listener, void *data)
{
	/* This event is forwarded by the cursor when a pointer emits a _relative_


@@ 528,94 665,67 @@ motionrelative(struct wl_listener *listener, void *data)
	motionnotify(server, event->time_msec);
}

static void
motionabsolute(struct wl_listener *listener, void *data)
{
	/* This event is forwarded by the cursor when a pointer emits an _absolute_
	 * motion event, from 0..1 on each axis. This happens, for example, when
	 * wlroots is running under a Wayland window rather than KMS+DRM, and you
	 * move the mouse over the window. You could enter the window from any edge,
	 * so we have to warp the mouse there. There is also some hardware which
	 * emits these events. */
	struct dwl_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);
	motionnotify(server, event->time_msec);
}

static void
buttonpress(struct wl_listener *listener, void *data)
void
movemouse(struct dwl_server *server, const Arg *arg)
{
	/* This event is forwarded by the cursor when a pointer emits a button
	 * event. */
	struct dwl_server *server =
		wl_container_of(listener, server, cursor_button);
	struct wlr_event_pointer_button *event = data;
	/* Notify the client with pointer focus that a button press has occurred */
	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 dwl_view *view = xytoview(server,
			server->cursor->x, server->cursor->y, &surface, &sx, &sy);
	if (event->state == WLR_BUTTON_RELEASED) {
		/* If you released any buttons, we exit interactive move/resize mode. */
		server->cursor_mode = DWL_CURSOR_PASSTHROUGH;
	} else {
		/* Focus that client if the button was _pressed_ */
		focus(view, surface);
	if (!view) {
		return;
	}
	moveresize(view, DWL_CURSOR_MOVE, 0);
}

		struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat);
		uint32_t mods = wlr_keyboard_get_modifiers(keyboard);
		for (int i = 0; i < LENGTH(buttons); i++) {
			if (event->button == buttons[i].button &&
					CLEANMASK(mods) == CLEANMASK(buttons[i].mod) &&
					buttons[i].func) {
				buttons[i].func(server, &buttons[i].arg);
			}
		}
void
moverequest(struct wl_listener *listener, void *data)
{
	/* This event is raised when a client would like to begin an interactive
	 * move, typically because the user clicked on their client-side
	 * decorations. Note that a more sophisticated compositor should check the
	 * provied serial against a list of button press serials sent to this
	 * client, to prevent the client from requesting this whenever they want. */
	struct dwl_view *view = wl_container_of(listener, view, request_move);
	moveresize(view, DWL_CURSOR_MOVE, 0);
}

void
moveresize(struct dwl_view *view, enum dwl_cursor_mode mode, uint32_t edges)
{
	/* This function sets up an interactive move or resize operation, where the
	 * compositor stops propagating pointer events to clients and instead
	 * consumes them itself, to move or resize windows. */
	struct dwl_server *server = view->server;
	struct wlr_surface *focused_surface =
		server->seat->pointer_state.focused_surface;
	if (view->xdg_surface->surface != focused_surface) {
		/* Deny move/resize requests from unfocused clients. */
		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 == DWL_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
axisnotify(struct wl_listener *listener, void *data)
{
	/* This event is forwarded by the cursor when a pointer emits an axis event,
	 * for example when you move the scroll wheel. */
	struct dwl_server *server =
		wl_container_of(listener, server, cursor_axis);
	struct wlr_event_pointer_axis *event = data;
	/* Notify the client with pointer focus of the axis event. */
	wlr_seat_pointer_notify_axis(server->seat,
			event->time_msec, event->orientation, event->delta,
			event->delta_discrete, event->source);
}

static void
cursorframe(struct wl_listener *listener, void *data)
void
quit(struct dwl_server *server, const Arg *arg)
{
	/* This event is forwarded by the cursor when a pointer emits an frame
	 * event. Frame events are sent after regular pointer events to group
	 * multiple events together. For instance, two axis events may happen at the
	 * same time, in which case a frame event won't be sent in between. */
	struct dwl_server *server =
		wl_container_of(listener, server, cursor_frame);
	/* Notify the client with pointer focus of the frame event. */
	wlr_seat_pointer_notify_frame(server->seat);
	wl_display_terminate(server->wl_display);
}

/* Used to move all of the data necessary to render a surface from the top-level
 * frame handler to the per-surface render function. */
struct render_data {
	struct wlr_output *output;
	struct wlr_renderer *renderer;
	struct dwl_view *view;
	struct timespec *when;
};

static void
void
render(struct wlr_surface *surface, int sx, int sy, void *data)
{
	/* This function is called for every surface that needs to be rendered. */


@@ 677,7 787,7 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
	wlr_surface_send_frame_done(surface, rdata->when);
}

static void
void
renderoutput(struct wl_listener *listener, void *data)
{
	/* This function is called every time an output is ready to display a frame,


@@ 736,121 846,7 @@ renderoutput(struct wl_listener *listener, void *data)
	wlr_output_commit(output->wlr_output);
}

static void
createoutput(struct wl_listener *listener, void *data)
{
	/* This event is rasied by the backend when a new output (aka a display or
	 * monitor) becomes available. */
	struct dwl_server *server =
		wl_container_of(listener, server, new_output);
	struct wlr_output *wlr_output = data;

	/* Some backends don't have modes. DRM+KMS does, and we need to set a mode
	 * before we can use the output. The mode is a tuple of (width, height,
	 * refresh rate), and each monitor supports only a specific set of modes. We
	 * just pick the monitor's preferred mode, a more sophisticated compositor
	 * would let the user configure it. */
	if (!wl_list_empty(&wlr_output->modes)) {
		struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
		wlr_output_set_mode(wlr_output, mode);
		wlr_output_enable(wlr_output, true);
		if (!wlr_output_commit(wlr_output)) {
			return;
		}
	}

	/* Allocates and configures our state for this output */
	struct dwl_output *output =
		calloc(1, sizeof(struct dwl_output));
	output->wlr_output = wlr_output;
	output->server = server;
	/* Sets up a listener for the frame notify event. */
	output->frame.notify = renderoutput;
	wl_signal_add(&wlr_output->events.frame, &output->frame);
	wl_list_insert(&server->outputs, &output->link);

	/* Adds this to the output layout. The add_auto function arranges outputs
	 * from left-to-right in the order they appear. A more sophisticated
	 * compositor would let the user configure the arrangement of outputs in the
	 * layout. */
	wlr_output_layout_add_auto(server->output_layout, wlr_output);

	/* Creating the global adds a wl_output global to the display, which Wayland
	 * clients can see to find out information about the output (such as
	 * DPI, scale factor, manufacturer, etc). */
	wlr_output_create_global(wlr_output);
}

static void
maprequest(struct wl_listener *listener, void *data)
{
	/* Called when the surface is mapped, or ready to display on-screen. */
	struct dwl_view *view = wl_container_of(listener, view, map);
	view->mapped = true;
	focus(view, view->xdg_surface->surface);
}

static void
unmapnotify(struct wl_listener *listener, void *data)
{
	/* Called when the surface is unmapped, and should no longer be shown. */
	struct dwl_view *view = wl_container_of(listener, view, unmap);
	view->mapped = false;
}

static void
destroynotify(struct wl_listener *listener, void *data)
{
	/* Called when the surface is destroyed and should never be shown again. */
	struct dwl_view *view = wl_container_of(listener, view, destroy);
	wl_list_remove(&view->link);
	free(view);
}

static void
moveresize(struct dwl_view *view,
		enum dwl_cursor_mode mode, uint32_t edges)
{
	/* This function sets up an interactive move or resize operation, where the
	 * compositor stops propagating pointer events to clients and instead
	 * consumes them itself, to move or resize windows. */
	struct dwl_server *server = view->server;
	struct wlr_surface *focused_surface =
		server->seat->pointer_state.focused_surface;
	if (view->xdg_surface->surface != focused_surface) {
		/* Deny move/resize requests from unfocused clients. */
		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 == DWL_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
movemouse(struct dwl_server *server, const Arg *arg)
{
	double sx, sy;
	struct wlr_surface *surface;
	struct dwl_view *view = xytoview(server,
			server->cursor->x, server->cursor->y, &surface, &sx, &sy);
	if (!view) {
		return;
	}
	moveresize(view, DWL_CURSOR_MOVE, 0);
}

static void
void
resizemouse(struct dwl_server *server, const Arg *arg)
{
	double sx, sy;


@@ 868,19 864,7 @@ resizemouse(struct dwl_server *server, const Arg *arg)
	moveresize(view, DWL_CURSOR_RESIZE, WLR_EDGE_BOTTOM|WLR_EDGE_RIGHT);
}

static void
moverequest(struct wl_listener *listener, void *data)
{
	/* This event is raised when a client would like to begin an interactive
	 * move, typically because the user clicked on their client-side
	 * decorations. Note that a more sophisticated compositor should check the
	 * provied serial against a list of button press serials sent to this
	 * client, to prevent the client from requesting this whenever they want. */
	struct dwl_view *view = wl_container_of(listener, view, request_move);
	moveresize(view, DWL_CURSOR_MOVE, 0);
}

static void
void
resizerequest(struct wl_listener *listener, void *data)
{
	/* This event is raised when a client would like to begin an interactive


@@ 893,41 877,91 @@ resizerequest(struct wl_listener *listener, void *data)
	moveresize(view, DWL_CURSOR_RESIZE, event->edges);
}

static void
createnotify(struct wl_listener *listener, void *data)
void
setcursor(struct wl_listener *listener, void *data)
{
	/* This event is raised when wlr_xdg_shell receives a new xdg surface from a
	 * client, either a toplevel (application window) or popup. */
	struct dwl_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 dwl_server *server = wl_container_of(
			listener, server, request_cursor);
	/* This event is rasied by the seat when a client provides a cursor image */
	struct wlr_seat_pointer_request_set_cursor_event *event = data;
	struct wlr_seat_client *focused_client =
		server->seat->pointer_state.focused_client;
	/* This can be sent by any client, so we check to make sure this one is
	 * actually has pointer focus first. */
	if (focused_client == event->seat_client) {
		/* Once we've vetted the client, we can tell the cursor to use the
		 * provided surface as the cursor image. It will set the hardware cursor
		 * on the output that it's currently on and continue to do so as the
		 * cursor moves between outputs. */
		wlr_cursor_set_surface(server->cursor, event->surface,
				event->hotspot_x, event->hotspot_y);
	}
}

	/* Allocate a dwl_view for this surface */
	struct dwl_view *view =
		calloc(1, sizeof(struct dwl_view));
	view->server = server;
	view->xdg_surface = xdg_surface;
void
spawn(struct dwl_server *server, const Arg *arg)
{
	if (fork() == 0) {
		setsid();
		execvp(((char **)arg->v)[0], (char **)arg->v);
		fprintf(stderr, "dwl: execvp %s", ((char **)arg->v)[0]);
		perror(" failed");
		exit(EXIT_FAILURE);
	}
}

	/* Listen to the various events it can emit */
	view->map.notify = maprequest;
	wl_signal_add(&xdg_surface->events.map, &view->map);
	view->unmap.notify = unmapnotify;
	wl_signal_add(&xdg_surface->events.unmap, &view->unmap);
	view->destroy.notify = destroynotify;
	wl_signal_add(&xdg_surface->events.destroy, &view->destroy);
void
unmapnotify(struct wl_listener *listener, void *data)
{
	/* Called when the surface is unmapped, and should no longer be shown. */
	struct dwl_view *view = wl_container_of(listener, view, unmap);
	view->mapped = false;
}

	/* cotd */
	struct wlr_xdg_toplevel *toplevel = xdg_surface->toplevel;
	view->request_move.notify = moverequest;
	wl_signal_add(&toplevel->events.request_move, &view->request_move);
	view->request_resize.notify = resizerequest;
	wl_signal_add(&toplevel->events.request_resize, &view->request_resize);
bool
xytosurface(struct dwl_view *view, double lx, double ly,
		struct wlr_surface **surface, double *sx, double *sy)
{
	/*
	 * XDG toplevels may have nested surfaces, such as popup windows for context
	 * menus or tooltips. This function tests if any of those are underneath the
	 * coordinates lx and ly (in output Layout Coordinates). If so, it sets the
	 * surface pointer to that wlr_surface and the sx and sy coordinates to the
	 * coordinates relative to that surface's top-left corner.
	 */
	double view_sx = lx - view->x;
	double view_sy = ly - view->y;

	/* Add it to the list of views. */
	wl_list_insert(&server->views, &view->link);
	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;
}

struct dwl_view *
xytoview(struct dwl_server *server, double lx, double ly,
		struct wlr_surface **surface, double *sx, double *sy)
{
	/* This iterates over all of our surfaces and attempts to find one under the
	 * cursor. This relies on server->views being ordered from top-to-bottom. */
	struct dwl_view *view;
	wl_list_for_each(view, &server->views, link) {
		if (xytosurface(view, lx, ly, surface, sx, sy)) {
			return view;
		}
	}
	return NULL;
}

int
Do not follow this link