dwl/dwl.c
Devin J. Pohly 206427537a Merge updates from guidocella
Thanks so much for helping to keep the project running while life was
crazy!
2020-12-24 21:56:41 -05:00

2693 lines
81 KiB
C

/*
* See LICENSE file for copyright and license details.
*/
#define _POSIX_C_SOURCE 200809L
#include <getopt.h>
#include <linux/input-event-codes.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include <libinput.h>
#include <wayland-server-core.h>
#include <wlr/backend.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_data_control_v1.h>
#include <wlr/types/wlr_data_device.h>
#include <wlr/types/wlr_export_dmabuf_v1.h>
#include <wlr/types/wlr_gamma_control_v1.h>
#include <wlr/types/wlr_input_device.h>
#include <wlr/types/wlr_idle.h>
#include <wlr/types/wlr_layer_shell_v1.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_output_management_v1.h>
#include <wlr/types/wlr_pointer.h>
#include <wlr/types/wlr_primary_selection.h>
#include <wlr/types/wlr_primary_selection_v1.h>
#include <wlr/types/wlr_screencopy_v1.h>
#include <wlr/types/wlr_seat.h>
#include <wlr/types/wlr_viewporter.h>
#include <wlr/types/wlr_virtual_keyboard_v1.h>
#include <wlr/types/wlr_xcursor_manager.h>
#include <wlr/types/wlr_xdg_decoration_v1.h>
#include <wlr/types/wlr_xdg_output_v1.h>
#include <wlr/types/wlr_xdg_shell.h>
#include <wlr/backend/libinput.h>
#include <wlr/util/log.h>
#include <xkbcommon/xkbcommon.h>
#ifdef XWAYLAND
#include <X11/Xlib.h>
#include <wlr/xwayland.h>
#endif
/* macros */
#define BARF(fmt, ...) do { fprintf(stderr, fmt "\n", ##__VA_ARGS__); exit(EXIT_FAILURE); } while (0)
#define EBARF(fmt, ...) BARF(fmt ": %s", ##__VA_ARGS__, strerror(errno))
#define MAX(A, B) ((A) > (B) ? (A) : (B))
#define MIN(A, B) ((A) < (B) ? (A) : (B))
#define CLEANMASK(mask) (mask & ~WLR_MODIFIER_CAPS)
#define VISIBLEON(C, M) ((C)->mon == (M) && ((C)->tags & (M)->tagset[(M)->seltags]))
#define LENGTH(X) (sizeof X / sizeof X[0])
#define END(A) ((A) + LENGTH(A))
#define TAGMASK ((1 << LENGTH(tags)) - 1)
#define ROUND(X) ((int)((X)+0.5))
#ifdef XWAYLAND
#define WLR_SURFACE(C) ((C)->type != XDGShell ? (C)->surface.xwayland->surface : (C)->surface.xdg->surface)
#else
#define WLR_SURFACE(C) ((C)->surface.xdg->surface)
#endif
/* enums */
enum { CurNormal, CurMove, CurResize }; /* cursor */
#ifdef XWAYLAND
enum { NetWMWindowTypeDialog, NetWMWindowTypeSplash, NetWMWindowTypeToolbar,
NetWMWindowTypeUtility, NetLast }; /* EWMH atoms */
enum { XDGShell, X11Managed, X11Unmanaged }; /* client types */
#endif
typedef union {
int i;
unsigned int ui;
float f;
const void *v;
} Arg;
typedef struct {
unsigned int mod;
unsigned int button;
void (*func)(const Arg *);
const Arg arg;
} Button;
typedef struct Monitor Monitor;
typedef struct {
struct wl_list link;
struct wl_list flink;
struct wl_list slink;
union {
struct wlr_xdg_surface *xdg;
#ifdef XWAYLAND
struct wlr_xwayland_surface *xwayland;
#endif
} surface;
#ifdef XWAYLAND
struct wl_listener activate;
struct wl_listener configure;
#endif
struct wl_listener commit;
struct wl_listener map;
struct wl_listener unmap;
struct wl_listener destroy;
struct wl_listener fullscreen;
struct wlr_box geom; /* layout-relative, includes border */
Monitor *mon;
#ifdef XWAYLAND
unsigned int type;
#endif
int bw;
unsigned int tags;
int isfloating;
uint32_t resize; /* configure serial of a pending resize */
int prevx;
int prevy;
int prevwidth;
int prevheight;
int isfullscreen;
} Client;
typedef struct {
struct wl_listener request_mode;
struct wl_listener destroy;
} Decoration;
typedef struct {
uint32_t mod;
xkb_keysym_t keysym;
void (*func)(const Arg *);
const Arg arg;
} Key;
typedef struct {
struct wl_list link;
struct wlr_input_device *device;
struct wl_listener modifiers;
struct wl_listener key;
struct wl_listener destroy;
} Keyboard;
typedef struct {
struct wlr_layer_surface_v1 *layer_surface;
struct wl_list link;
struct wl_listener destroy;
struct wl_listener map;
struct wl_listener unmap;
struct wl_listener surface_commit;
struct wlr_box geo;
enum zwlr_layer_shell_v1_layer layer;
} LayerSurface;
typedef struct {
const char *symbol;
void (*arrange)(Monitor *);
} Layout;
struct Monitor {
struct wl_list link;
struct wlr_output *wlr_output;
struct wl_listener frame;
struct wl_listener destroy;
struct wlr_box m; /* monitor area, layout-relative */
struct wlr_box w; /* window area, layout-relative */
struct wl_list layers[4]; // LayerSurface::link
const Layout *lt[2];
unsigned int seltags;
unsigned int sellt;
unsigned int tagset[2];
double mfact;
int nmaster;
Client *fullscreenclient;
int position;
};
typedef struct {
const char *name;
float mfact;
int nmaster;
float scale;
const Layout *lt;
enum wl_output_transform rr;
} MonitorRule;
typedef struct {
const char *id;
const char *title;
unsigned int tags;
int isfloating;
int monitor;
} Rule;
/* 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 timespec *when;
int x, y; /* layout-relative */
};
/* function declarations */
static void applybounds(Client *c, struct wlr_box *bbox);
static void applyexclusive(struct wlr_box *usable_area, uint32_t anchor,
int32_t exclusive, int32_t margin_top, int32_t margin_right,
int32_t margin_bottom, int32_t margin_left);
static void applyrules(Client *c);
static void arrange(Monitor *m);
static void arrangelayer(Monitor *m, struct wl_list *list,
struct wlr_box *usable_area, int exclusive);
static void arrangelayers(Monitor *m);
static void axisnotify(struct wl_listener *listener, void *data);
static void buttonpress(struct wl_listener *listener, void *data);
static void chvt(const Arg *arg);
static void cleanup(void);
static void cleanupkeyboard(struct wl_listener *listener, void *data);
static void cleanupmon(struct wl_listener *listener, void *data);
static void closemon(Monitor *m);
static void commitlayersurfacenotify(struct wl_listener *listener, void *data);
static void commitnotify(struct wl_listener *listener, void *data);
static void createkeyboard(struct wlr_input_device *device);
static void createmon(struct wl_listener *listener, void *data);
static void createnotify(struct wl_listener *listener, void *data);
static void createlayersurface(struct wl_listener *listener, void *data);
static void createpointer(struct wlr_input_device *device);
static void createxdeco(struct wl_listener *listener, void *data);
static void cursorframe(struct wl_listener *listener, void *data);
static void destroylayersurfacenotify(struct wl_listener *listener, void *data);
static void destroynotify(struct wl_listener *listener, void *data);
static void destroyxdeco(struct wl_listener *listener, void *data);
static Monitor *dirtomon(int dir);
static void focusclient(Client *c, int lift);
static void focusmon(const Arg *arg);
static void focusstack(const Arg *arg);
static void fullscreennotify(struct wl_listener *listener, void *data);
static Client *focustop(Monitor *m);
static void getxdecomode(struct wl_listener *listener, void *data);
static void incnmaster(const Arg *arg);
static void inputdevice(struct wl_listener *listener, void *data);
static int keybinding(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 killclient(const Arg *arg);
static void maplayersurfacenotify(struct wl_listener *listener, void *data);
static void mapnotify(struct wl_listener *listener, void *data);
static void maximizeclient(Client *c);
static void monocle(Monitor *m);
static void motionabsolute(struct wl_listener *listener, void *data);
static void motionnotify(uint32_t time);
static void motionrelative(struct wl_listener *listener, void *data);
static void moveresize(const Arg *arg);
static void outputmgrapply(struct wl_listener *listener, void *data);
static void outputmgrapplyortest(struct wlr_output_configuration_v1 *config, int test);
static void outputmgrtest(struct wl_listener *listener, void *data);
static void pointerfocus(Client *c, struct wlr_surface *surface,
double sx, double sy, uint32_t time);
static void quit(const Arg *arg);
static void render(struct wlr_surface *surface, int sx, int sy, void *data);
static void renderclients(Monitor *m, struct timespec *now);
static void renderlayer(struct wl_list *layer_surfaces, struct timespec *now);
static void rendermon(struct wl_listener *listener, void *data);
static void resize(Client *c, int x, int y, int w, int h, int interact);
static void run(char *startup_cmd);
static void scalebox(struct wlr_box *box, float scale);
static Client *selclient(void);
static void setcursor(struct wl_listener *listener, void *data);
static void setpsel(struct wl_listener *listener, void *data);
static void setsel(struct wl_listener *listener, void *data);
static void setfloating(Client *c, int floating);
static void setfullscreen(Client *c, int fullscreen);
static void setlayout(const Arg *arg);
static void setmfact(const Arg *arg);
static void setmon(Client *c, Monitor *m, unsigned int newtags);
static void setup(void);
static void sigchld(int unused);
static void spawn(const Arg *arg);
static void tag(const Arg *arg);
static void tagmon(const Arg *arg);
static void tile(Monitor *m);
static void togglefloating(const Arg *arg);
static void togglefullscreen(const Arg *arg);
static void toggletag(const Arg *arg);
static void toggleview(const Arg *arg);
static void unmaplayersurface(LayerSurface *layersurface);
static void unmaplayersurfacenotify(struct wl_listener *listener, void *data);
static void unmapnotify(struct wl_listener *listener, void *data);
static void updatemons();
static void view(const Arg *arg);
static void virtualkeyboard(struct wl_listener *listener, void *data);
static Client *xytoclient(double x, double y);
static struct wlr_surface *xytolayersurface(struct wl_list *layer_surfaces,
double x, double y, double *sx, double *sy);
static Monitor *xytomon(double x, double y);
static void zoom(const Arg *arg);
/* variables */
static const char broken[] = "broken";
static struct wl_display *dpy;
static struct wlr_backend *backend;
static struct wlr_renderer *drw;
static struct wlr_compositor *compositor;
static struct wlr_xdg_shell *xdg_shell;
static struct wl_list clients; /* tiling order */
static struct wl_list fstack; /* focus order */
static struct wl_list stack; /* stacking z-order */
static struct wl_list independents;
static struct wlr_idle *idle;
static struct wlr_layer_shell_v1 *layer_shell;
static struct wlr_xdg_decoration_manager_v1 *xdeco_mgr;
static struct wlr_output_manager_v1 *output_mgr;
static struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard_mgr;
static struct wlr_cursor *cursor;
static struct wlr_xcursor_manager *cursor_mgr;
#ifdef XWAYLAND
static struct wlr_xcursor *xcursor;
static struct wlr_xcursor_manager *xcursor_mgr;
#endif
static struct wlr_seat *seat;
static struct wl_list keyboards;
static unsigned int cursor_mode;
static Client *grabc;
static int grabcx, grabcy; /* client-relative */
static struct wlr_output_layout *output_layout;
static struct wlr_box sgeom;
static struct wl_list mons;
static Monitor *selmon;
/* global event handlers */
static struct wl_listener cursor_axis = {.notify = axisnotify};
static struct wl_listener cursor_button = {.notify = buttonpress};
static struct wl_listener cursor_frame = {.notify = cursorframe};
static struct wl_listener cursor_motion = {.notify = motionrelative};
static struct wl_listener cursor_motion_absolute = {.notify = motionabsolute};
static struct wl_listener new_input = {.notify = inputdevice};
static struct wl_listener new_virtual_keyboard = {.notify = virtualkeyboard};
static struct wl_listener new_output = {.notify = createmon};
static struct wl_listener new_xdeco = {.notify = createxdeco};
static struct wl_listener new_xdg_surface = {.notify = createnotify};
static struct wl_listener new_layer_shell_surface = {.notify = createlayersurface};
static struct wl_listener output_mgr_apply = {.notify = outputmgrapply};
static struct wl_listener output_mgr_test = {.notify = outputmgrtest};
static struct wl_listener request_cursor = {.notify = setcursor};
static struct wl_listener request_set_psel = {.notify = setpsel};
static struct wl_listener request_set_sel = {.notify = setsel};
#ifdef XWAYLAND
static void activatex11(struct wl_listener *listener, void *data);
static void configurex11(struct wl_listener *listener, void *data);
static void createnotifyx11(struct wl_listener *listener, void *data);
static Atom getatom(xcb_connection_t *xc, const char *name);
static void renderindependents(struct wlr_output *output, struct timespec *now);
static void updatewindowtype(Client *c);
static void xwaylandready(struct wl_listener *listener, void *data);
static Client *xytoindependent(double x, double y);
static struct wl_listener new_xwayland_surface = {.notify = createnotifyx11};
static struct wl_listener xwayland_ready = {.notify = xwaylandready};
static struct wlr_xwayland *xwayland;
static Atom netatom[NetLast];
#endif
/* configuration, allows nested code to access above variables */
#include "config.h"
/* compile-time check if all tags fit into an unsigned int bit array. */
struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
/* function implementations */
void
applybounds(Client *c, struct wlr_box *bbox)
{
/* set minimum possible */
c->geom.width = MAX(1, c->geom.width);
c->geom.height = MAX(1, c->geom.height);
if (c->geom.x >= bbox->x + bbox->width)
c->geom.x = bbox->x + bbox->width - c->geom.width;
if (c->geom.y >= bbox->y + bbox->height)
c->geom.y = bbox->y + bbox->height - c->geom.height;
if (c->geom.x + c->geom.width + 2 * c->bw <= bbox->x)
c->geom.x = bbox->x;
if (c->geom.y + c->geom.height + 2 * c->bw <= bbox->y)
c->geom.y = bbox->y;
}
void
applyexclusive(struct wlr_box *usable_area,
uint32_t anchor, int32_t exclusive,
int32_t margin_top, int32_t margin_right,
int32_t margin_bottom, int32_t margin_left) {
if (exclusive <= 0)
return;
struct {
uint32_t singular_anchor;
uint32_t anchor_triplet;
int *positive_axis;
int *negative_axis;
int margin;
} edges[] = {
// Top
{
.singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP,
.anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP,
.positive_axis = &usable_area->y,
.negative_axis = &usable_area->height,
.margin = margin_top,
},
// Bottom
{
.singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
.anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
.positive_axis = NULL,
.negative_axis = &usable_area->height,
.margin = margin_bottom,
},
// Left
{
.singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT,
.anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
.positive_axis = &usable_area->x,
.negative_axis = &usable_area->width,
.margin = margin_left,
},
// Right
{
.singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT,
.anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM,
.positive_axis = NULL,
.negative_axis = &usable_area->width,
.margin = margin_right,
},
};
for (size_t i = 0; i < LENGTH(edges); ++i) {
if ((anchor == edges[i].singular_anchor || anchor == edges[i].anchor_triplet)
&& exclusive + edges[i].margin > 0) {
if (edges[i].positive_axis)
*edges[i].positive_axis += exclusive + edges[i].margin;
if (edges[i].negative_axis)
*edges[i].negative_axis -= exclusive + edges[i].margin;
break;
}
}
}
void
applyrules(Client *c)
{
/* rule matching */
const char *appid, *title;
#ifdef XWAYLAND
if (c->type != XDGShell) {
updatewindowtype(c);
appid = c->surface.xwayland->class;
title = c->surface.xwayland->title;
} else
#endif
{
appid = c->surface.xdg->toplevel->app_id;
title = c->surface.xdg->toplevel->title;
}
if (!appid)
appid = broken;
if (!title)
title = broken;
unsigned int i, newtags = 0;
const Rule *r;
Monitor *mon = selmon, *m;
for (r = rules; r < END(rules); r++) {
if ((!r->title || strstr(title, r->title))
&& (!r->id || strstr(appid, r->id))) {
c->isfloating = r->isfloating;
newtags |= r->tags;
i = 0;
wl_list_for_each(m, &mons, link)
if (r->monitor == i++)
mon = m;
}
}
setmon(c, mon, newtags);
}
void
arrange(Monitor *m)
{
if (m->lt[m->sellt]->arrange)
m->lt[m->sellt]->arrange(m);
else if (m->fullscreenclient)
maximizeclient(m->fullscreenclient);
/* TODO recheck pointer focus here... or in resize()? */
}
void
arrangelayer(Monitor *m, struct wl_list *list, struct wlr_box *usable_area, int exclusive)
{
LayerSurface *layersurface;
struct wlr_box full_area = m->m;
wl_list_for_each(layersurface, list, link) {
struct wlr_layer_surface_v1 *wlr_layer_surface = layersurface->layer_surface;
struct wlr_layer_surface_v1_state *state = &wlr_layer_surface->current;
struct wlr_box box = {
.width = state->desired_width,
.height = state->desired_height
};
if (exclusive != (state->exclusive_zone > 0))
continue;
struct wlr_box bounds = state->exclusive_zone == -1 ?
full_area : *usable_area;
// Horizontal axis
const uint32_t both_horiz = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
| ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
if ((state->anchor & both_horiz) && box.width == 0) {
box.x = bounds.x;
box.width = bounds.width;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
box.x = bounds.x;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
box.x = bounds.x + (bounds.width - box.width);
} else {
box.x = bounds.x + ((bounds.width / 2) - (box.width / 2));
}
// Vertical axis
const uint32_t both_vert = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
| ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
if ((state->anchor & both_vert) && box.height == 0) {
box.y = bounds.y;
box.height = bounds.height;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
box.y = bounds.y;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
box.y = bounds.y + (bounds.height - box.height);
} else {
box.y = bounds.y + ((bounds.height / 2) - (box.height / 2));
}
// Margin
if ((state->anchor & both_horiz) == both_horiz) {
box.x += state->margin.left;
box.width -= state->margin.left + state->margin.right;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
box.x += state->margin.left;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
box.x -= state->margin.right;
}
if ((state->anchor & both_vert) == both_vert) {
box.y += state->margin.top;
box.height -= state->margin.top + state->margin.bottom;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
box.y += state->margin.top;
} else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
box.y -= state->margin.bottom;
}
if (box.width < 0 || box.height < 0) {
wlr_layer_surface_v1_close(wlr_layer_surface);
continue;
}
layersurface->geo = box;
applyexclusive(usable_area, state->anchor, state->exclusive_zone,
state->margin.top, state->margin.right,
state->margin.bottom, state->margin.left);
wlr_layer_surface_v1_configure(wlr_layer_surface, box.width, box.height);
}
}
void
arrangelayers(Monitor *m)
{
struct wlr_box usable_area = m->m;
// Arrange exclusive surfaces from top->bottom
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
&usable_area, 1);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
&usable_area, 1);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
&usable_area, 1);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
&usable_area, 1);
if (memcmp(&usable_area, &m->w, sizeof(struct wlr_box))) {
m->w = usable_area;
arrange(m);
}
// Arrange non-exlusive surfaces from top->bottom
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
&usable_area, 0);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
&usable_area, 0);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
&usable_area, 0);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
&usable_area, 0);
// Find topmost keyboard interactive layer, if such a layer exists
uint32_t layers_above_shell[] = {
ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY,
ZWLR_LAYER_SHELL_V1_LAYER_TOP,
};
size_t nlayers = LENGTH(layers_above_shell);
LayerSurface *layersurface;
struct wlr_keyboard *kb = wlr_seat_get_keyboard(seat);
for (size_t i = 0; i < nlayers; ++i) {
wl_list_for_each_reverse(layersurface,
&m->layers[layers_above_shell[i]], link) {
if (layersurface->layer_surface->current.keyboard_interactive &&
layersurface->layer_surface->mapped) {
// Deactivate the focused client.
focusclient(NULL, 0);
wlr_seat_keyboard_notify_enter(seat, layersurface->layer_surface->surface,
kb->keycodes, kb->num_keycodes, &kb->modifiers);
return;
}
}
}
}
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 wlr_event_pointer_axis *event = data;
wlr_idle_notify_activity(idle, seat);
/* Notify the client with pointer focus of the axis event. */
wlr_seat_pointer_notify_axis(seat,
event->time_msec, event->orientation, event->delta,
event->delta_discrete, event->source);
}
void
buttonpress(struct wl_listener *listener, void *data)
{
struct wlr_event_pointer_button *event = data;
wlr_idle_notify_activity(idle, seat);
switch (event->state) {
case WLR_BUTTON_PRESSED:;
/* Change focus if the button was _pressed_ over a client */
Client *c;
if ((c = xytoclient(cursor->x, cursor->y)))
focusclient(c, 1);
struct wlr_keyboard* keyboard = wlr_seat_get_keyboard(seat);
uint32_t mods = wlr_keyboard_get_modifiers(keyboard);
const Button *b;
for (b = buttons; b < END(buttons); b++) {
if (CLEANMASK(mods) == CLEANMASK(b->mod) &&
event->button == b->button && b->func) {
b->func(&b->arg);
return;
}
}
break;
case WLR_BUTTON_RELEASED:
/* If you released any buttons, we exit interactive move/resize mode. */
/* TODO should reset to the pointer focus's current setcursor */
if (cursor_mode != CurNormal) {
wlr_xcursor_manager_set_cursor_image(cursor_mgr,
"left_ptr", cursor);
cursor_mode = CurNormal;
/* Drop the window off on its new monitor */
selmon = xytomon(cursor->x, cursor->y);
setmon(grabc, selmon, 0);
return;
}
break;
}
/* If the event wasn't handled by the compositor, notify the client with
* pointer focus that a button press has occurred */
wlr_seat_pointer_notify_button(seat,
event->time_msec, event->button, event->state);
}
void
chvt(const Arg *arg)
{
wlr_session_change_vt(wlr_backend_get_session(backend), arg->ui);
}
void
cleanup(void)
{
#ifdef XWAYLAND
wlr_xwayland_destroy(xwayland);
#endif
wl_display_destroy_clients(dpy);
wl_display_destroy(dpy);
wlr_xcursor_manager_destroy(cursor_mgr);
wlr_cursor_destroy(cursor);
wlr_output_layout_destroy(output_layout);
}
void
cleanupkeyboard(struct wl_listener *listener, void *data)
{
struct wlr_input_device *device = data;
Keyboard *kb = device->data;
wl_list_remove(&kb->link);
wl_list_remove(&kb->modifiers.link);
wl_list_remove(&kb->key.link);
wl_list_remove(&kb->destroy.link);
free(kb);
}
void
cleanupmon(struct wl_listener *listener, void *data)
{
struct wlr_output *wlr_output = data;
Monitor *m = wlr_output->data;
wl_list_remove(&m->destroy.link);
wl_list_remove(&m->frame.link);
wl_list_remove(&m->link);
wlr_output_layout_remove(output_layout, m->wlr_output);
updatemons();
int nmons = wl_list_length(&mons), i = 0;
do // don't switch to disabled mons
selmon = wl_container_of(mons.prev, selmon, link);
while (!selmon->wlr_output->enabled && i++ < nmons);
focusclient(focustop(selmon), 1);
closemon(m);
free(m);
}
void
closemon(Monitor *m)
{
// move closed monitor's clients to the focused one
Client *c;
wl_list_for_each(c, &clients, link) {
if (c->isfloating && c->geom.x > m->m.width)
resize(c, c->geom.x - m->w.width, c->geom.y,
c->geom.width, c->geom.height, 0);
if (c->mon == m)
setmon(c, selmon, c->tags);
}
}
void
commitlayersurfacenotify(struct wl_listener *listener, void *data)
{
LayerSurface *layersurface = wl_container_of(listener, layersurface, surface_commit);
struct wlr_layer_surface_v1 *wlr_layer_surface = layersurface->layer_surface;
struct wlr_output *wlr_output = wlr_layer_surface->output;
if (!wlr_output)
return;
Monitor *m = wlr_output->data;
arrangelayers(m);
if (layersurface->layer != wlr_layer_surface->current.layer) {
wl_list_remove(&layersurface->link);
wl_list_insert(&m->layers[wlr_layer_surface->current.layer],
&layersurface->link);
layersurface->layer = wlr_layer_surface->current.layer;
}
}
void
commitnotify(struct wl_listener *listener, void *data)
{
Client *c = wl_container_of(listener, c, commit);
/* mark a pending resize as completed */
if (c->resize && c->resize <= c->surface.xdg->configure_serial)
c->resize = 0;
}
void
createkeyboard(struct wlr_input_device *device)
{
Keyboard *kb = device->data = calloc(1, sizeof(*kb));
kb->device = device;
/* Prepare an XKB keymap and assign it to the keyboard. */
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
struct xkb_keymap *keymap = xkb_map_new_from_names(context, &xkb_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, repeat_rate, repeat_delay);
/* Here we set up listeners for keyboard events. */
kb->modifiers.notify = keypressmod;
wl_signal_add(&device->keyboard->events.modifiers, &kb->modifiers);
kb->key.notify = keypress;
wl_signal_add(&device->keyboard->events.key, &kb->key);
kb->destroy.notify = cleanupkeyboard;
wl_signal_add(&device->events.destroy, &kb->destroy);
wlr_seat_set_keyboard(seat, device);
/* And add the keyboard to our list of keyboards */
wl_list_insert(&keyboards, &kb->link);
}
void
createmon(struct wl_listener *listener, void *data)
{
/* This event is raised by the backend when a new output (aka a display or
* monitor) becomes available. */
struct wlr_output *wlr_output = data;
/* 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. */
wlr_output_set_mode(wlr_output, wlr_output_preferred_mode(wlr_output));
/* Allocates and configures monitor state using configured rules */
Monitor *m = wlr_output->data = calloc(1, sizeof(*m));
m->wlr_output = wlr_output;
m->tagset[0] = m->tagset[1] = 1;
m->position = -1;
for (const MonitorRule *r = monrules; r < END(monrules); r++) {
if (!r->name || strstr(wlr_output->name, r->name)) {
m->mfact = r->mfact;
m->nmaster = r->nmaster;
wlr_output_set_scale(wlr_output, r->scale);
wlr_xcursor_manager_load(cursor_mgr, r->scale);
m->lt[0] = r->lt;
m->lt[1] = &layouts[LENGTH(layouts) > 1 && r->lt != &layouts[1]];
wlr_output_set_transform(wlr_output, r->rr);
m->position = r - monrules;
break;
}
}
wlr_output_enable_adaptive_sync(wlr_output, 1);
/* Set up event listeners */
m->frame.notify = rendermon;
wl_signal_add(&wlr_output->events.frame, &m->frame);
m->destroy.notify = cleanupmon;
wl_signal_add(&wlr_output->events.destroy, &m->destroy);
Monitor *moni, *insertmon = NULL;
int x = 0;
wl_list_for_each(moni, &mons, link)
if (m->position > moni->position)
insertmon = moni;
if (insertmon) {
x = insertmon->w.x + insertmon->w.width;
wl_list_insert(&insertmon->link, &m->link);
} else {
wl_list_insert(&mons, &m->link);
}
wlr_output_enable(wlr_output, 1);
if (!wlr_output_commit(wlr_output))
return;
/* Adds this to the output layout in the order it was configured in.
*
* The output layout utility automatically 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_layout_add(output_layout, wlr_output, x, 0);
wl_list_for_each_reverse(moni, &mons, link) {
/* All monitors to the right of the new one must be moved */
if (moni == m)
break;
wlr_output_layout_move(output_layout, moni->wlr_output, moni->w.x + m->wlr_output->width, 0);
}
sgeom = *wlr_output_layout_get_box(output_layout, NULL);
size_t nlayers = LENGTH(m->layers);
for (size_t i = 0; i < nlayers; ++i)
wl_list_init(&m->layers[i]);
/* When adding monitors, the geometries of all monitors must be updated */
updatemons();
wl_list_for_each(m, &mons, link) {
/* The first monitor in the list is the most recently added */
Client *c;
wl_list_for_each(c, &clients, link) {
if (c->isfloating)
resize(c, c->geom.x + m->w.width, c->geom.y,
c->geom.width, c->geom.height, 0);
}
return;
}
}
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 wlr_xdg_surface *xdg_surface = data;
Client *c;
if (xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL)
return;
wl_list_for_each(c, &clients, link)
if (c->isfullscreen && VISIBLEON(c, c->mon))
setfullscreen(c, 0);
/* Allocate a Client for this surface */
c = xdg_surface->data = calloc(1, sizeof(*c));
c->surface.xdg = xdg_surface;
c->bw = borderpx;
/* Tell the client not to try anything fancy */
wlr_xdg_toplevel_set_tiled(c->surface.xdg, WLR_EDGE_TOP |
WLR_EDGE_BOTTOM | WLR_EDGE_LEFT | WLR_EDGE_RIGHT);
/* Listen to the various events it can emit */
c->commit.notify = commitnotify;
wl_signal_add(&xdg_surface->surface->events.commit, &c->commit);
c->map.notify = mapnotify;
wl_signal_add(&xdg_surface->events.map, &c->map);
c->unmap.notify = unmapnotify;
wl_signal_add(&xdg_surface->events.unmap, &c->unmap);
c->destroy.notify = destroynotify;
wl_signal_add(&xdg_surface->events.destroy, &c->destroy);
c->fullscreen.notify = fullscreennotify;
wl_signal_add(&xdg_surface->toplevel->events.request_fullscreen, &c->fullscreen);
c->isfullscreen = 0;
}
void
createlayersurface(struct wl_listener *listener, void *data)
{
struct wlr_layer_surface_v1 *wlr_layer_surface = data;
if (!wlr_layer_surface->output) {
wlr_layer_surface->output = selmon->wlr_output;
}
LayerSurface *layersurface = calloc(1, sizeof(LayerSurface));
layersurface->surface_commit.notify = commitlayersurfacenotify;
wl_signal_add(&wlr_layer_surface->surface->events.commit,
&layersurface->surface_commit);
layersurface->destroy.notify = destroylayersurfacenotify;
wl_signal_add(&wlr_layer_surface->events.destroy, &layersurface->destroy);
layersurface->map.notify = maplayersurfacenotify;
wl_signal_add(&wlr_layer_surface->events.map, &layersurface->map);
layersurface->unmap.notify = unmaplayersurfacenotify;
wl_signal_add(&wlr_layer_surface->events.unmap, &layersurface->unmap);
layersurface->layer_surface = wlr_layer_surface;
wlr_layer_surface->data = layersurface;
Monitor *m = wlr_layer_surface->output->data;
wl_list_insert(&m->layers[wlr_layer_surface->client_pending.layer],
&layersurface->link);
// Temporarily set the layer's current state to client_pending
// so that we can easily arrange it
struct wlr_layer_surface_v1_state old_state = wlr_layer_surface->current;
wlr_layer_surface->current = wlr_layer_surface->client_pending;
arrangelayers(m);
wlr_layer_surface->current = old_state;
}
void
createpointer(struct wlr_input_device *device)
{
if (wlr_input_device_is_libinput(device)) {
struct libinput_device *libinput_device = (struct libinput_device*)
wlr_libinput_get_device_handle(device);
if (tap_to_click && libinput_device_config_tap_get_finger_count(libinput_device))
libinput_device_config_tap_set_enabled(libinput_device, LIBINPUT_CONFIG_TAP_ENABLED);
if (libinput_device_config_scroll_has_natural_scroll(libinput_device))
libinput_device_config_scroll_set_natural_scroll_enabled(libinput_device, natural_scrolling);
}
/* We don't do anything special with pointers. All of our pointer handling
* is proxied through wlr_cursor. On another compositor, you might take this
* opportunity to do libinput configuration on the device to set
* acceleration, etc. */
wlr_cursor_attach_input_device(cursor, device);
}
void
createxdeco(struct wl_listener *listener, void *data)
{
struct wlr_xdg_toplevel_decoration_v1 *wlr_deco = data;
Decoration *d = wlr_deco->data = calloc(1, sizeof(*d));
wl_signal_add(&wlr_deco->events.request_mode, &d->request_mode);
d->request_mode.notify = getxdecomode;
wl_signal_add(&wlr_deco->events.destroy, &d->destroy);
d->destroy.notify = destroyxdeco;
getxdecomode(&d->request_mode, wlr_deco);
}
void
cursorframe(struct wl_listener *listener, void *data)
{
/* 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. */
/* Notify the client with pointer focus of the frame event. */
wlr_seat_pointer_notify_frame(seat);
}
void
destroylayersurfacenotify(struct wl_listener *listener, void *data)
{
LayerSurface *layersurface = wl_container_of(listener, layersurface, destroy);
if (layersurface->layer_surface->mapped)
unmaplayersurface(layersurface);
wl_list_remove(&layersurface->link);
wl_list_remove(&layersurface->destroy.link);
wl_list_remove(&layersurface->map.link);
wl_list_remove(&layersurface->unmap.link);
wl_list_remove(&layersurface->surface_commit.link);
if (layersurface->layer_surface->output) {
Monitor *m = layersurface->layer_surface->output->data;
if (m)
arrangelayers(m);
layersurface->layer_surface->output = NULL;
}
free(layersurface);
}
void
destroynotify(struct wl_listener *listener, void *data)
{
/* Called when the surface is destroyed and should never be shown again. */
Client *c = wl_container_of(listener, c, destroy);
wl_list_remove(&c->map.link);
wl_list_remove(&c->unmap.link);
wl_list_remove(&c->destroy.link);
wl_list_remove(&c->fullscreen.link);
#ifdef XWAYLAND
if (c->type == X11Managed)
wl_list_remove(&c->activate.link);
else if (c->type == XDGShell)
#endif
wl_list_remove(&c->commit.link);
free(c);
}
void
destroyxdeco(struct wl_listener *listener, void *data)
{
struct wlr_xdg_toplevel_decoration_v1 *wlr_deco = data;
Decoration *d = wlr_deco->data;
wl_list_remove(&d->destroy.link);
wl_list_remove(&d->request_mode.link);
free(d);
}
void
togglefullscreen(const Arg *arg)
{
Client *sel = selclient();
setfullscreen(sel, !sel->isfullscreen);
}
void
maximizeclient(Client *c)
{
resize(c, c->mon->m.x, c->mon->m.y, c->mon->m.width, c->mon->m.height, 0);
/* used for fullscreen clients */
}
void
setfullscreen(Client *c, int fullscreen)
{
c->isfullscreen = fullscreen;
c->bw = (1 - fullscreen) * borderpx;
#ifdef XWAYLAND
if (c->type == X11Managed)
wlr_xwayland_surface_set_fullscreen(c->surface.xwayland, fullscreen);
else
#endif
wlr_xdg_toplevel_set_fullscreen(c->surface.xdg, fullscreen);
if (fullscreen) {
c->prevx = c->geom.x;
c->prevy = c->geom.y;
c->prevheight = c->geom.height;
c->prevwidth = c->geom.width;
c->mon->fullscreenclient = c;
maximizeclient(c);
} else {
/* restore previous size instead of arrange for floating windows since
* client positions are set by the user and cannot be recalculated */
resize(c, c->prevx, c->prevy, c->prevwidth, c->prevheight, 0);
c->mon->fullscreenclient = NULL;
arrange(c->mon);
}
}
void
fullscreennotify(struct wl_listener *listener, void *data)
{
Client *c = wl_container_of(listener, c, fullscreen);
setfullscreen(c, !c->isfullscreen);
}
Monitor *
dirtomon(int dir)
{
Monitor *m;
if (dir > 0) {
if (selmon->link.next == &mons)
return wl_container_of(mons.next, m, link);
return wl_container_of(selmon->link.next, m, link);
} else {
if (selmon->link.prev == &mons)
return wl_container_of(mons.prev, m, link);
return wl_container_of(selmon->link.prev, m, link);
}
}
void
focusclient(Client *c, int lift)
{
/* Raise client in stacking order if requested */
if (c && lift) {
wl_list_remove(&c->slink);
wl_list_insert(&stack, &c->slink);
}
struct wlr_surface *old = seat->keyboard_state.focused_surface;
if (c && WLR_SURFACE(c) == old)
return;
/* Put the new client atop the focus stack and select its monitor */
if (c) {
wl_list_remove(&c->flink);
wl_list_insert(&fstack, &c->flink);
selmon = c->mon;
}
/* Deactivate old client if focus is changing */
if (old && (!c || WLR_SURFACE(c) != old)) {
if (wlr_surface_is_xdg_surface(old))
wlr_xdg_toplevel_set_activated(
wlr_xdg_surface_from_wlr_surface(old), 0);
#ifdef XWAYLAND
else if (wlr_surface_is_xwayland_surface(old))
wlr_xwayland_surface_activate(
wlr_xwayland_surface_from_wlr_surface(old), 0);
#endif
/* If an overlay is focused, don't focus or activate the client,
* but only update its position in fstack to render its border with focuscolor
* and focus it after the overlay is closed.
* It's probably pointless to check if old is a layer surface
* since it can't be anything else at this point. */
else if (wlr_surface_is_layer_surface(old)) {
struct wlr_layer_surface_v1 *wlr_layer_surface =
wlr_layer_surface_v1_from_wlr_surface(old);
if (wlr_layer_surface->mapped && (
wlr_layer_surface->current.layer == ZWLR_LAYER_SHELL_V1_LAYER_TOP ||
wlr_layer_surface->current.layer == ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY
))
return;
}
}
if (!c) {
/* With no client, all we have left is to clear focus */
wlr_seat_keyboard_notify_clear_focus(seat);
return;
}
/* Have a client, so focus its top-level wlr_surface */
struct wlr_keyboard *kb = wlr_seat_get_keyboard(seat);
wlr_seat_keyboard_notify_enter(seat, WLR_SURFACE(c),
kb->keycodes, kb->num_keycodes, &kb->modifiers);
/* Activate the new client */
#ifdef XWAYLAND
if (c->type != XDGShell)
wlr_xwayland_surface_activate(c->surface.xwayland, 1);
else
#endif
wlr_xdg_toplevel_set_activated(c->surface.xdg, 1);
}
void
focusmon(const Arg *arg)
{
do
selmon = dirtomon(arg->i);
while (!selmon->wlr_output->enabled);
focusclient(focustop(selmon), 1);
}
void
focusstack(const Arg *arg)
{
/* Focus the next or previous client (in tiling order) on selmon */
Client *c, *sel = selclient();
if (!sel)
return;
if (arg->i > 0) {
wl_list_for_each(c, &sel->link, link) {
if (&c->link == &clients)
continue; /* wrap past the sentinel node */
if (VISIBLEON(c, selmon))
break; /* found it */
}
} else {
wl_list_for_each_reverse(c, &sel->link, link) {
if (&c->link == &clients)
continue; /* wrap past the sentinel node */
if (VISIBLEON(c, selmon))
break; /* found it */
}
}
/* If only one client is visible on selmon, then c == sel */
focusclient(c, 1);
}
Client *
focustop(Monitor *m)
{
Client *c;
wl_list_for_each(c, &fstack, flink)
if (VISIBLEON(c, m))
return c;
return NULL;
}
void
getxdecomode(struct wl_listener *listener, void *data)
{
struct wlr_xdg_toplevel_decoration_v1 *wlr_deco = data;
wlr_xdg_toplevel_decoration_v1_set_mode(wlr_deco,
WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE);
}
void
incnmaster(const Arg *arg)
{
selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
arrange(selmon);
}
void
inputdevice(struct wl_listener *listener, void *data)
{
/* This event is raised by the backend when a new input device becomes
* available. */
struct wlr_input_device *device = data;
switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
createkeyboard(device);
break;
case WLR_INPUT_DEVICE_POINTER:
createpointer(device);
break;
default:
/* TODO handle other input device types */
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. */
/* TODO do we actually require a cursor? */
uint32_t caps = WL_SEAT_CAPABILITY_POINTER;
if (!wl_list_empty(&keyboards))
caps |= WL_SEAT_CAPABILITY_KEYBOARD;
wlr_seat_set_capabilities(seat, caps);
}
int
keybinding(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.
*/
int handled = 0;
const Key *k;
for (k = keys; k < END(keys); k++) {
if (CLEANMASK(mods) == CLEANMASK(k->mod) &&
sym == k->keysym && k->func) {
k->func(&k->arg);
handled = 1;
}
}
return handled;
}
void
keypress(struct wl_listener *listener, void *data)
{
int i;
/* This event is raised when a key is pressed or released. */
Keyboard *kb = wl_container_of(listener, kb, key);
struct wlr_event_keyboard_key *event = data;
/* 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(
kb->device->keyboard->xkb_state, keycode, &syms);
int handled = 0;
uint32_t mods = wlr_keyboard_get_modifiers(kb->device->keyboard);
wlr_idle_notify_activity(idle, seat);
/* On _press_, attempt to process a compositor keybinding. */
if (event->state == WL_KEYBOARD_KEY_STATE_PRESSED)
for (i = 0; i < nsyms; i++)
handled = keybinding(mods, syms[i]) || handled;
if (!handled) {
/* Pass unhandled keycodes along to the client. */
wlr_seat_set_keyboard(seat, kb->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. */
Keyboard *kb = wl_container_of(listener, kb, 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(seat, kb->device);
/* Send modifiers to the client. */
wlr_seat_keyboard_notify_modifiers(seat,
&kb->device->keyboard->modifiers);
}
void
killclient(const Arg *arg)
{
Client *sel = selclient();
if (!sel)
return;
#ifdef XWAYLAND
if (sel->type != XDGShell)
wlr_xwayland_surface_close(sel->surface.xwayland);
else
#endif
wlr_xdg_toplevel_send_close(sel->surface.xdg);
}
void
maplayersurfacenotify(struct wl_listener *listener, void *data)
{
LayerSurface *layersurface = wl_container_of(listener, layersurface, map);
wlr_surface_send_enter(layersurface->layer_surface->surface, layersurface->layer_surface->output);
motionnotify(0);
}
void
mapnotify(struct wl_listener *listener, void *data)
{
/* Called when the surface is mapped, or ready to display on-screen. */
Client *c = wl_container_of(listener, c, map), *oldfocus = selclient();
#ifdef XWAYLAND
if (c->type == X11Unmanaged) {
/* Insert this independent into independents lists. */
wl_list_insert(&independents, &c->link);
return;
}
#endif
/* Insert this client into client lists. */
wl_list_insert(&clients, &c->link);
wl_list_insert(&fstack, &c->flink);
wl_list_insert(&stack, &c->slink);
#ifdef XWAYLAND
if (c->type != XDGShell) {
c->geom.x = c->surface.xwayland->x;
c->geom.y = c->surface.xwayland->y;
c->geom.width = c->surface.xwayland->width + 2 * c->bw;
c->geom.height = c->surface.xwayland->height + 2 * c->bw;
} else
#endif
{
wlr_xdg_surface_get_geometry(c->surface.xdg, &c->geom);
c->geom.width += 2 * c->bw;
c->geom.height += 2 * c->bw;
}
/* Set initial monitor, tags, floating status, and focus */
applyrules(c);
if (c->mon->fullscreenclient && c->mon->fullscreenclient == oldfocus
&& !c->isfloating && c->mon->lt[c->mon->sellt]->arrange) {
maximizeclient(c->mon->fullscreenclient);
focusclient(c->mon->fullscreenclient, 1);
/* give the focus back the fullscreen client on that monitor if exists,
* is focused and the new client isn't floating */
}
}
void
monocle(Monitor *m)
{
Client *c;
wl_list_for_each(c, &clients, link) {
if (!VISIBLEON(c, m) || c->isfloating)
continue;
if (c->isfullscreen)
maximizeclient(c);
else
resize(c, m->w.x, m->w.y, m->w.width, m->w.height, 0);
}
}
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 wlr_event_pointer_motion_absolute *event = data;
wlr_cursor_warp_absolute(cursor, event->device, event->x, event->y);
motionnotify(event->time_msec);
}
void
motionnotify(uint32_t time)
{
// time is 0 in internal calls meant to restore pointer focus.
if (time) {
wlr_idle_notify_activity(idle, seat);
/* Update selmon (even while dragging a window) */
if (sloppyfocus)
selmon = xytomon(cursor->x, cursor->y);
}
/* If we are currently grabbing the mouse, handle and return */
if (cursor_mode == CurMove) {
/* Move the grabbed client to the new position. */
resize(grabc, cursor->x - grabcx, cursor->y - grabcy,
grabc->geom.width, grabc->geom.height, 1);
return;
} else if (cursor_mode == CurResize) {
resize(grabc, grabc->geom.x, grabc->geom.y,
cursor->x - grabc->geom.x,
cursor->y - grabc->geom.y, 1);
return;
}
struct wlr_surface *surface = NULL;
double sx = 0, sy = 0;
Client *c = NULL;
if ((surface = xytolayersurface(&selmon->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
cursor->x, cursor->y, &sx, &sy)))
;
else if ((surface = xytolayersurface(&selmon->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
cursor->x, cursor->y, &sx, &sy)))
;
#ifdef XWAYLAND
/* Find an independent under the pointer and send the event along. */
else if ((c = xytoindependent(cursor->x, cursor->y))) {
surface = wlr_surface_surface_at(c->surface.xwayland->surface,
cursor->x - c->surface.xwayland->x - c->bw,
cursor->y - c->surface.xwayland->y - c->bw, &sx, &sy);
/* Otherwise, find the client under the pointer and send the event along. */
}
#endif
else if ((c = xytoclient(cursor->x, cursor->y))) {
#ifdef XWAYLAND
if (c->type != XDGShell)
surface = wlr_surface_surface_at(c->surface.xwayland->surface,
cursor->x - c->geom.x - c->bw,
cursor->y - c->geom.y - c->bw, &sx, &sy);
else
#endif
surface = wlr_xdg_surface_surface_at(c->surface.xdg,
cursor->x - c->geom.x - c->bw,
cursor->y - c->geom.y - c->bw, &sx, &sy);
}
else if ((surface = xytolayersurface(&selmon->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
cursor->x, cursor->y, &sx, &sy)))
;
else
surface = xytolayersurface(&selmon->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
cursor->x, cursor->y, &sx, &sy);
/* If there's no client surface under the cursor, set the cursor image to a
* default. This is what makes the cursor image appear when you move it
* off of a client or over its border. */
if (!surface && time)
wlr_xcursor_manager_set_cursor_image(cursor_mgr,
"left_ptr", cursor);
pointerfocus(c, surface, sx, sy, time);
}
void
motionrelative(struct wl_listener *listener, void *data)
{
/* This event is forwarded by the cursor when a pointer emits a _relative_
* pointer motion event (i.e. a delta) */
struct wlr_event_pointer_motion *event = data;
/* The cursor doesn't move unless we tell it to. The cursor automatically
* handles constraining the motion to the output layout, as well as any
* special configuration applied for the specific input device which
* generated the event. You can pass NULL for the device if you want to move
* the cursor around without any input. */
wlr_cursor_move(cursor, event->device,
event->delta_x, event->delta_y);
motionnotify(event->time_msec);
}
void
moveresize(const Arg *arg)
{
grabc = xytoclient(cursor->x, cursor->y);
if (!grabc)
return;
/* Float the window and tell motionnotify to grab it */
setfloating(grabc, 1);
switch (cursor_mode = arg->ui) {
case CurMove:
grabcx = cursor->x - grabc->geom.x;
grabcy = cursor->y - grabc->geom.y;
wlr_xcursor_manager_set_cursor_image(cursor_mgr, "fleur", cursor);
break;
case CurResize:
/* Doesn't work for X11 output - the next absolute motion event
* returns the cursor to where it started */
wlr_cursor_warp_closest(cursor, NULL,
grabc->geom.x + grabc->geom.width,
grabc->geom.y + grabc->geom.height);
wlr_xcursor_manager_set_cursor_image(cursor_mgr,
"bottom_right_corner", cursor);
break;
}
}
void
outputmgrapply(struct wl_listener *listener, void *data)
{
struct wlr_output_configuration_v1 *config = data;
outputmgrapplyortest(config, 0);
}
void
outputmgrapplyortest(struct wlr_output_configuration_v1 *config, int test)
{
struct wlr_output_configuration_head_v1 *config_head;
int ok = 1;
wl_list_for_each(config_head, &config->heads, link) {
struct wlr_output *wlr_output = config_head->state.output;
wlr_output_enable(wlr_output, config_head->state.enabled);
if (config_head->state.enabled) {
if (config_head->state.mode)
wlr_output_set_mode(wlr_output, config_head->state.mode);
else
wlr_output_set_custom_mode(wlr_output,
config_head->state.custom_mode.width,
config_head->state.custom_mode.height,
config_head->state.custom_mode.refresh);
wlr_output_layout_move(output_layout, wlr_output,
config_head->state.x, config_head->state.y);
wlr_output_set_transform(wlr_output, config_head->state.transform);
wlr_output_set_scale(wlr_output, config_head->state.scale);
} else if (wl_list_length(&mons) > 1) {
Monitor *m;
wl_list_for_each(m, &mons, link) {
if (m->wlr_output->name == wlr_output->name) {
// focus the left monitor (relative to the current focus)
m->wlr_output->enabled = !m->wlr_output->enabled;
Arg ar = {.i = -1};
focusmon(&ar);
closemon(m);
m->wlr_output->enabled = !m->wlr_output->enabled;
}
}
}
if (test) {
ok &= wlr_output_test(wlr_output);
wlr_output_rollback(wlr_output);
} else
ok &= wlr_output_commit(wlr_output);
}
if (ok) {
wlr_output_configuration_v1_send_succeeded(config);
if (!test)
updatemons();
} else
wlr_output_configuration_v1_send_failed(config);
wlr_output_configuration_v1_destroy(config);
}
void
outputmgrtest(struct wl_listener *listener, void *data)
{
struct wlr_output_configuration_v1 *config = data;
outputmgrapplyortest(config, 1);
}
void
pointerfocus(Client *c, struct wlr_surface *surface, double sx, double sy,
uint32_t time)
{
/* Use top level surface if nothing more specific given */
if (c && !surface)
surface = WLR_SURFACE(c);
/* If surface is NULL, clear pointer focus */
if (!surface) {
wlr_seat_pointer_notify_clear_focus(seat);
return;
}
int internal_call = !time;
if (!time) {
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
time = now.tv_sec * 1000 + now.tv_nsec / 1000000;
}
/* If surface is already focused, only notify of motion */
if (surface == seat->pointer_state.focused_surface) {
wlr_seat_pointer_notify_motion(seat, time, sx, sy);
return;
}
/* Otherwise, let the client know that the mouse cursor has entered one
* of its surfaces, and make keyboard focus follow if desired. */
wlr_seat_pointer_notify_enter(seat, surface, sx, sy);
if (!c)
return;
#if XWAYLAND
if (c->type == X11Unmanaged)
return;
#endif
if (sloppyfocus && !internal_call)
focusclient(c, 0);
}
void
quit(const Arg *arg)
{
wl_display_terminate(dpy);
}
void
render(struct wlr_surface *surface, int sx, int sy, void *data)
{
/* This function is called for every surface that needs to be rendered. */
struct render_data *rdata = data;
struct wlr_output *output = rdata->output;
/* We first obtain a wlr_texture, which is a GPU resource. wlroots
* automatically handles negotiating these with the client. The underlying
* resource could be an opaque handle passed from the client, or the client
* 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. */
struct wlr_texture *texture = wlr_surface_get_texture(surface);
if (!texture)
return;
/* 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
* have layout coordinates of 2000,100. We need to translate that to
* output-local coordinates, or (2000 - 1920). */
double ox = 0, oy = 0;
wlr_output_layout_output_coords(output_layout, output, &ox, &oy);
/* We also have to apply the scale factor for HiDPI outputs. This is only
* part of the puzzle, dwl does not fully support HiDPI. */
struct wlr_box obox = {
.x = ox + rdata->x + sx,
.y = oy + rdata->y + sy,
.width = surface->current.width,
.height = surface->current.height,
};
scalebox(&obox, output->scale);
/*
* Those familiar with OpenGL are also familiar with the role of matrices
* in graphics programming. We need to prepare a matrix to render the
* client with. wlr_matrix_project_box is a helper which takes a box with
* a desired x, y coordinates, width and height, and an output geometry,
* then prepares an orthographic projection and multiplies the necessary
* transforms to produce a model-view-projection matrix.
*
* Naturally you can do this any way you like, for example to make a 3D
* compositor.
*/
float matrix[9];
enum wl_output_transform transform = wlr_output_transform_invert(
surface->current.transform);
wlr_matrix_project_box(matrix, &obox, transform, 0,
output->transform_matrix);
/* This takes our matrix, the texture, and an alpha, and performs the actual
* rendering on the GPU. */
wlr_render_texture_with_matrix(drw, texture, matrix, 1);
/* This lets the client know that we've displayed that frame and it can
* prepare another one now if it likes. */
wlr_surface_send_frame_done(surface, rdata->when);
}
void
renderclients(Monitor *m, struct timespec *now)
{
Client *c, *sel = selclient();
const float *color;
double ox, oy;
int i, w, h;
struct render_data rdata;
struct wlr_box *borders;
struct wlr_surface *surface;
/* Each subsequent window we render is rendered on top of the last. Because
* our stacking list is ordered front-to-back, we iterate over it backwards. */
wl_list_for_each_reverse(c, &stack, slink) {
/* Only render visible clients which show on this monitor */
if (!VISIBLEON(c, c->mon) || !wlr_output_layout_intersects(
output_layout, m->wlr_output, &c->geom))
continue;
surface = WLR_SURFACE(c);
ox = c->geom.x, oy = c->geom.y;
wlr_output_layout_output_coords(output_layout, m->wlr_output,
&ox, &oy);
if (c->bw) {
w = surface->current.width;
h = surface->current.height;
borders = (struct wlr_box[4]) {
{ox, oy, w + 2 * c->bw, c->bw}, /* top */
{ox, oy + c->bw, c->bw, h}, /* left */
{ox + c->bw + w, oy + c->bw, c->bw, h}, /* right */
{ox, oy + c->bw + h, w + 2 * c->bw, c->bw}, /* bottom */
};
/* Draw window borders */
color = (c == sel) ? focuscolor : bordercolor;
for (i = 0; i < 4; i++) {
scalebox(&borders[i], m->wlr_output->scale);
wlr_render_rect(drw, &borders[i], color,
m->wlr_output->transform_matrix);
}
}
/* This calls our render function for each surface among the
* xdg_surface's toplevel and popups. */
rdata.output = m->wlr_output;
rdata.when = now;
rdata.x = c->geom.x + c->bw;
rdata.y = c->geom.y + c->bw;
#ifdef XWAYLAND
if (c->type != XDGShell)
wlr_surface_for_each_surface(c->surface.xwayland->surface, render, &rdata);
else
#endif
wlr_xdg_surface_for_each_surface(c->surface.xdg, render, &rdata);
}
}
void
renderlayer(struct wl_list *layer_surfaces, struct timespec *now)
{
LayerSurface *layersurface;
wl_list_for_each(layersurface, layer_surfaces, link) {
struct render_data rdata = {
.output = layersurface->layer_surface->output,
.when = now,
.x = layersurface->geo.x,
.y = layersurface->geo.y,
};
wlr_surface_for_each_surface(layersurface->layer_surface->surface,
render, &rdata);
}
}
void
rendermon(struct wl_listener *listener, void *data)
{
/* This function is called every time an output is ready to display a frame,
* generally at the output's refresh rate (e.g. 60Hz). */
Monitor *m = wl_container_of(listener, m, frame);
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
/* Do not render if any XDG clients have an outstanding resize. */
Client *c;
int render = 1;
wl_list_for_each(c, &stack, slink) {
if (c->resize) {
wlr_surface_send_frame_done(WLR_SURFACE(c), &now);
render = 0;
}
}
/* wlr_output_attach_render makes the OpenGL context current. */
if (!wlr_output_attach_render(m->wlr_output, NULL))
return;
if (render) {
/* Begin the renderer (calls glViewport and some other GL sanity checks) */
wlr_renderer_begin(drw, m->wlr_output->width, m->wlr_output->height);
wlr_renderer_clear(drw, rootcolor);
renderlayer(&m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND], &now);
renderlayer(&m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM], &now);
renderclients(m, &now);
#ifdef XWAYLAND
renderindependents(m->wlr_output, &now);
#endif
renderlayer(&m->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP], &now);
renderlayer(&m->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY], &now);
/* Hardware cursors are rendered by the GPU on a separate plane, and can be
* moved around without re-rendering what's beneath them - which is more
* efficient. However, not all hardware supports hardware cursors. For this
* reason, wlroots provides a software fallback, which we ask it to render
* here. wlr_cursor handles configuring hardware vs software cursors for you,
* and this function is a no-op when hardware cursors are in use. */
wlr_output_render_software_cursors(m->wlr_output, NULL);
/* Conclude rendering and swap the buffers, showing the final frame
* on-screen. */
wlr_renderer_end(drw);
}
wlr_output_commit(m->wlr_output);
}
void
resize(Client *c, int x, int y, int w, int h, int interact)
{
/*
* Note that I took some shortcuts here. In a more fleshed-out
* compositor, you'd wait for the client to prepare a buffer at
* the new size, then commit any movement that was prepared.
*/
c->geom.x = x;
c->geom.y = y;
c->geom.width = w;
c->geom.height = h;
struct wlr_box *bbox = interact ? &sgeom : &c->mon->w;
applybounds(c, bbox);
/* wlroots makes this a no-op if size hasn't changed */
#ifdef XWAYLAND
if (c->type != XDGShell)
wlr_xwayland_surface_configure(c->surface.xwayland,
c->geom.x, c->geom.y,
c->geom.width - 2 * c->bw, c->geom.height - 2 * c->bw);
else
#endif
c->resize = wlr_xdg_toplevel_set_size(c->surface.xdg,
c->geom.width - 2 * c->bw, c->geom.height - 2 * c->bw);
}
void
run(char *startup_cmd)
{
/* Add a Unix socket to the Wayland display. */
const char *socket = wl_display_add_socket_auto(dpy);
if (!socket)
BARF("startup: display_add_socket_auto");
/* Start the backend. This will enumerate outputs and inputs, become the DRM
* master, etc */
if (!wlr_backend_start(backend))
BARF("startup: backend_start");
/* Now that outputs are initialized, choose initial selmon based on
* cursor position, and set default cursor image */
selmon = xytomon(cursor->x, cursor->y);
/* TODO hack to get cursor to display in its initial location (100, 100)
* instead of (0, 0) and then jumping. still may not be fully
* initialized, as the image/coordinates are not transformed for the
* monitor when displayed here */
wlr_cursor_warp_closest(cursor, NULL, cursor->x, cursor->y);
wlr_xcursor_manager_set_cursor_image(cursor_mgr, "left_ptr", cursor);
/* Set the WAYLAND_DISPLAY environment variable to our socket and run the
* startup command if requested. */
setenv("WAYLAND_DISPLAY", socket, 1);
pid_t startup_pid = -1;
if (startup_cmd) {
pid_t startup_pid = fork();
if (startup_pid < 0)
EBARF("startup: fork");
if (startup_pid == 0) {
execl("/bin/sh", "/bin/sh", "-c", startup_cmd, (void *)NULL);
EBARF("startup: execl");
}
}
/* Run the Wayland event loop. This does not return until you exit the
* compositor. Starting the backend rigged up all of the necessary event
* loop configuration to listen to libinput events, DRM events, generate
* frame events at the refresh rate, and so on. */
wl_display_run(dpy);
if (startup_cmd) {
kill(startup_pid, SIGTERM);
waitpid(startup_pid, NULL, 0);
}
}
void
scalebox(struct wlr_box *box, float scale)
{
box->width = ROUND((box->x + box->width) * scale) - ROUND(box->x * scale);
box->height = ROUND((box->y + box->height) * scale) - ROUND(box->y * scale);
box->x = ROUND(box->x * scale);
box->y = ROUND(box->y * scale);
}
Client *
selclient(void)
{
Client *c = wl_container_of(fstack.next, c, flink);
if (wl_list_empty(&fstack) || !VISIBLEON(c, selmon))
return NULL;
return c;
}
void
setcursor(struct wl_listener *listener, void *data)
{
/* This event is raised by the seat when a client provides a cursor image */
struct wlr_seat_pointer_request_set_cursor_event *event = data;
/* If we're "grabbing" the cursor, don't use the client's image */
/* TODO still need to save the provided surface to restore later */
if (cursor_mode != CurNormal)
return;
/* This can be sent by any client, so we check to make sure this one is
* actually has pointer focus first. If so, 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. */
if (event->seat_client == seat->pointer_state.focused_client)
wlr_cursor_set_surface(cursor, event->surface,
event->hotspot_x, event->hotspot_y);
}
void
setfloating(Client *c, int floating)
{
c->isfloating = floating;
arrange(c->mon);
}
void
setlayout(const Arg *arg)
{
if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
selmon->sellt ^= 1;
if (arg && arg->v)
selmon->lt[selmon->sellt] = (Layout *)arg->v;
/* TODO change layout symbol? */
arrange(selmon);
}
/* arg > 1.0 will set mfact absolutely */
void
setmfact(const Arg *arg)
{
if (!arg || !selmon->lt[selmon->sellt]->arrange)
return;
float f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
if (f < 0.1 || f > 0.9)
return;
selmon->mfact = f;
arrange(selmon);
}
void
setmon(Client *c, Monitor *m, unsigned int newtags)
{
Monitor *oldmon = c->mon;
if (oldmon == m)
return;
c->mon = m;
/* TODO leave/enter is not optimal but works */
if (oldmon) {
wlr_surface_send_leave(WLR_SURFACE(c), oldmon->wlr_output);
arrange(oldmon);
}
if (m) {
/* Make sure window actually overlaps with the monitor */
applybounds(c, &m->m);
wlr_surface_send_enter(WLR_SURFACE(c), m->wlr_output);
c->tags = newtags ? newtags : m->tagset[m->seltags]; /* assign tags of target monitor */
arrange(m);
}
focusclient(focustop(selmon), 1);
}
void
setpsel(struct wl_listener *listener, void *data)
{
/* This event is raised by the seat when a client wants to set the selection,
* usually when the user copies something. wlroots allows compositors to
* ignore such requests if they so choose, but in dwl we always honor
*/
struct wlr_seat_request_set_primary_selection_event *event = data;
wlr_seat_set_primary_selection(seat, event->source, event->serial);
}
void
setsel(struct wl_listener *listener, void *data)
{
/* This event is raised by the seat when a client wants to set the selection,
* usually when the user copies something. wlroots allows compositors to
* ignore such requests if they so choose, but in dwl we always honor
*/
struct wlr_seat_request_set_selection_event *event = data;
wlr_seat_set_selection(seat, event->source, event->serial);
}
void
setup(void)
{
/* The Wayland display is managed by libwayland. It handles accepting
* clients from the Unix socket, manging Wayland globals, and so on. */
dpy = wl_display_create();
/* clean up child processes immediately */
sigchld(0);
/* The backend is a wlroots feature which abstracts the underlying input and
* output hardware. The autocreate option will choose the most suitable
* backend based on the current environment, such as opening an X11 window
* if an X11 server is running. The NULL argument here optionally allows you
* to pass in a custom renderer if wlr_renderer doesn't meet your needs. The
* backend uses the renderer, for example, to fall back to software cursors
* if the backend does not support hardware cursors (some older GPUs
* don't). */
if (!(backend = wlr_backend_autocreate(dpy, NULL)))
BARF("couldn't create backend");
/* 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
* supports for shared memory, this configures that for clients. */
drw = wlr_backend_get_renderer(backend);
wlr_renderer_init_wl_display(drw, dpy);
/* This creates some hands-off wlroots interfaces. The compositor is
* necessary for clients to allocate surfaces and the data device manager
* 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. Note that
* the clients cannot set the selection directly without compositor approval,
* see the setsel() function. */
compositor = wlr_compositor_create(dpy, drw);
wlr_export_dmabuf_manager_v1_create(dpy);
wlr_screencopy_manager_v1_create(dpy);
wlr_data_control_manager_v1_create(dpy);
wlr_data_device_manager_create(dpy);
wlr_gamma_control_manager_v1_create(dpy);
wlr_primary_selection_v1_device_manager_create(dpy);
wlr_viewporter_create(dpy);
/* Creates an output layout, which a wlroots utility for working with an
* arrangement of screens in a physical layout. */
output_layout = wlr_output_layout_create();
wlr_xdg_output_manager_v1_create(dpy, output_layout);
/* Configure a listener to be notified when new outputs are available on the
* backend. */
wl_list_init(&mons);
wl_signal_add(&backend->events.new_output, &new_output);
/* Set up our client lists and the xdg-shell. The xdg-shell is a
* Wayland protocol which is used for application windows. For more
* detail on shells, refer to the article:
*
* https://drewdevault.com/2018/07/29/Wayland-shells.html
*/
wl_list_init(&clients);
wl_list_init(&fstack);
wl_list_init(&stack);
wl_list_init(&independents);
idle = wlr_idle_create(dpy);
layer_shell = wlr_layer_shell_v1_create(dpy);
wl_signal_add(&layer_shell->events.new_surface, &new_layer_shell_surface);
xdg_shell = wlr_xdg_shell_create(dpy);
wl_signal_add(&xdg_shell->events.new_surface, &new_xdg_surface);
/* Use xdg_decoration protocol to negotiate server-side decorations */
xdeco_mgr = wlr_xdg_decoration_manager_v1_create(dpy);
wl_signal_add(&xdeco_mgr->events.new_toplevel_decoration, &new_xdeco);
/*
* Creates a cursor, which is a wlroots utility for tracking the cursor
* image shown on screen.
*/
cursor = wlr_cursor_create();
wlr_cursor_attach_output_layout(cursor, output_layout);
/* Creates an xcursor manager, another wlroots utility which loads up
* Xcursor themes to source cursor images from and makes sure that cursor
* images are available at all scale factors on the screen (necessary for
* HiDPI support). Scaled cursors will be loaded with each output. */
cursor_mgr = wlr_xcursor_manager_create(NULL, 24);
/*
* wlr_cursor *only* displays an image on screen. It does not move around
* when the pointer moves. However, we can attach input devices to it, and
* it will generate aggregate events for all of them. In these events, we
* can choose how we want to process them, forwarding them to clients and
* moving the cursor around. More detail on this process is described in my
* input handling blog post:
*
* https://drewdevault.com/2018/07/17/Input-handling-in-wlroots.html
*
* And more comments are sprinkled throughout the notify functions above.
*/
wl_signal_add(&cursor->events.motion, &cursor_motion);
wl_signal_add(&cursor->events.motion_absolute,
&cursor_motion_absolute);
wl_signal_add(&cursor->events.button, &cursor_button);
wl_signal_add(&cursor->events.axis, &cursor_axis);
wl_signal_add(&cursor->events.frame, &cursor_frame);
/*
* Configures a seat, which is a single "seat" at which a user sits and
* operates the computer. This conceptually includes up to one keyboard,
* pointer, touch, and drawing tablet device. We also rig up a listener to
* let us know when new input devices are available on the backend.
*/
wl_list_init(&keyboards);
wl_signal_add(&backend->events.new_input, &new_input);
virtual_keyboard_mgr = wlr_virtual_keyboard_manager_v1_create(dpy);
wl_signal_add(&virtual_keyboard_mgr->events.new_virtual_keyboard,
&new_virtual_keyboard);
seat = wlr_seat_create(dpy, "seat0");
wl_signal_add(&seat->events.request_set_cursor,
&request_cursor);
wl_signal_add(&seat->events.request_set_selection,
&request_set_sel);
wl_signal_add(&seat->events.request_set_primary_selection,
&request_set_psel);
output_mgr = wlr_output_manager_v1_create(dpy);
wl_signal_add(&output_mgr->events.apply, &output_mgr_apply);
wl_signal_add(&output_mgr->events.test, &output_mgr_test);
#ifdef XWAYLAND
/*
* Initialise the XWayland X server.
* It will be started when the first X client is started.
*/
xwayland = wlr_xwayland_create(dpy, compositor, 1);
if (xwayland) {
wl_signal_add(&xwayland->events.ready, &xwayland_ready);
wl_signal_add(&xwayland->events.new_surface, &new_xwayland_surface);
/*
* Create the XWayland cursor manager at scale 1, setting its default
* pointer to match the rest of dwl.
*/
xcursor_mgr = wlr_xcursor_manager_create(NULL, 24);
wlr_xcursor_manager_load(xcursor_mgr, 1);
xcursor = wlr_xcursor_manager_get_xcursor(xcursor_mgr, "left_ptr", 1);
if (xcursor) {
wlr_xwayland_set_cursor(xwayland,
xcursor->images[0]->buffer, xcursor->images[0]->width * 4,
xcursor->images[0]->width, xcursor->images[0]->height,
xcursor->images[0]->hotspot_x, xcursor->images[0]->hotspot_y);
}
setenv("DISPLAY", xwayland->display_name, 1);
} else {
fprintf(stderr, "failed to setup XWayland X server, continuing without it\n");
}
#endif
}
void
sigchld(int unused)
{
if (signal(SIGCHLD, sigchld) == SIG_ERR)
EBARF("can't install SIGCHLD handler");
while (0 < waitpid(-1, NULL, WNOHANG))
;
}
void
spawn(const Arg *arg)
{
if (fork() == 0) {
setsid();
execvp(((char **)arg->v)[0], (char **)arg->v);
EBARF("dwl: execvp %s failed", ((char **)arg->v)[0]);
}
}
void
tag(const Arg *arg)
{
Client *sel = selclient();
if (sel && arg->ui & TAGMASK) {
sel->tags = arg->ui & TAGMASK;
focusclient(focustop(selmon), 1);
arrange(selmon);
}
}
void
tagmon(const Arg *arg)
{
Client *sel = selclient();
if (!sel)
return;
setmon(sel, dirtomon(arg->i), 0);
}
void
tile(Monitor *m)
{
unsigned int i, n = 0, h, mw, my, ty;
Client *c;
wl_list_for_each(c, &clients, link)
if (VISIBLEON(c, m) && !c->isfloating)
n++;
if (n == 0)
return;
if (n > m->nmaster)
mw = m->nmaster ? m->w.width * m->mfact : 0;
else
mw = m->w.width;
i = my = ty = 0;
wl_list_for_each(c, &clients, link) {
if (!VISIBLEON(c, m) || c->isfloating)
continue;
if (c->isfullscreen)
maximizeclient(c);
else if (i < m->nmaster) {
h = (m->w.height - my) / (MIN(n, m->nmaster) - i);
resize(c, m->w.x, m->w.y + my, mw, h, 0);
my += c->geom.height;
} else {
h = (m->w.height - ty) / (n - i);
resize(c, m->w.x + mw, m->w.y + ty, m->w.width - mw, h, 0);
ty += c->geom.height;
}
i++;
}
}
void
togglefloating(const Arg *arg)
{
Client *sel = selclient();
if (!sel)
return;
/* return if fullscreen */
setfloating(sel, !sel->isfloating /* || sel->isfixed */);
}
void
toggletag(const Arg *arg)
{
Client *sel = selclient();
if (!sel)
return;
unsigned int newtags = sel->tags ^ (arg->ui & TAGMASK);
if (newtags) {
sel->tags = newtags;
focusclient(focustop(selmon), 1);
arrange(selmon);
}
}
void
toggleview(const Arg *arg)
{
unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
if (newtagset) {
selmon->tagset[selmon->seltags] = newtagset;
focusclient(focustop(selmon), 1);
arrange(selmon);
}
}
void
unmaplayersurface(LayerSurface *layersurface)
{
layersurface->layer_surface->mapped = 0;
if (layersurface->layer_surface->surface ==
seat->keyboard_state.focused_surface)
focusclient(selclient(), 1);
motionnotify(0);
}
void
unmaplayersurfacenotify(struct wl_listener *listener, void *data)
{
LayerSurface *layersurface = wl_container_of(listener, layersurface, unmap);
unmaplayersurface(layersurface);
}
void
unmapnotify(struct wl_listener *listener, void *data)
{
/* Called when the surface is unmapped, and should no longer be shown. */
Client *c = wl_container_of(listener, c, unmap);
wl_list_remove(&c->link);
#ifdef XWAYLAND
if (c->type == X11Unmanaged)
return;
#endif
setmon(c, NULL, 0);
wl_list_remove(&c->flink);
wl_list_remove(&c->slink);
}
void
updatemons()
{
struct wlr_output_configuration_v1 *config =
wlr_output_configuration_v1_create();
Monitor *m;
sgeom = *wlr_output_layout_get_box(output_layout, NULL);
wl_list_for_each(m, &mons, link) {
struct wlr_output_configuration_head_v1 *config_head =
wlr_output_configuration_head_v1_create(config, m->wlr_output);
/* Get the effective monitor geometry to use for surfaces */
m->m = m->w = *wlr_output_layout_get_box(output_layout, m->wlr_output);
/* Calculate the effective monitor geometry to use for clients */
arrangelayers(m);
/* Don't move clients to the left output when plugging monitors */
arrange(m);
config_head->state.enabled = m->wlr_output->enabled;
config_head->state.mode = m->wlr_output->current_mode;
config_head->state.x = m->m.x;
config_head->state.y = m->m.y;
}
wlr_output_manager_v1_set_configuration(output_mgr, config);
}
void
view(const Arg *arg)
{
if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
return;
selmon->seltags ^= 1; /* toggle sel tagset */
if (arg->ui & TAGMASK)
selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
focusclient(focustop(selmon), 1);
arrange(selmon);
}
void
virtualkeyboard(struct wl_listener *listener, void *data)
{
struct wlr_virtual_keyboard_v1 *keyboard = data;
struct wlr_input_device *device = &keyboard->input_device;
createkeyboard(device);
}
Client *
xytoclient(double x, double y)
{
/* Find the topmost visible client (if any) at point (x, y), including
* borders. This relies on stack being ordered from top to bottom. */
Client *c;
wl_list_for_each(c, &stack, slink)
if (VISIBLEON(c, c->mon) && wlr_box_contains_point(&c->geom, x, y))
return c;
return NULL;
}
struct wlr_surface *
xytolayersurface(struct wl_list *layer_surfaces, double x, double y,
double *sx, double *sy)
{
LayerSurface *layersurface;
wl_list_for_each_reverse(layersurface, layer_surfaces, link) {
struct wlr_surface *sub;
if (!layersurface->layer_surface->mapped)
continue;
sub = wlr_layer_surface_v1_surface_at(
layersurface->layer_surface,
x - layersurface->geo.x,
y - layersurface->geo.y,
sx, sy);
if (sub)
return sub;
}
return NULL;
}
Monitor *
xytomon(double x, double y)
{
struct wlr_output *o = wlr_output_layout_output_at(output_layout, x, y);
return o ? o->data : NULL;
}
void
zoom(const Arg *arg)
{
Client *c, *sel = selclient();
if (!sel || !selmon->lt[selmon->sellt]->arrange || sel->isfloating)
return;
/* Search for the first tiled window that is not sel, marking sel as
* NULL if we pass it along the way */
wl_list_for_each(c, &clients, link)
if (VISIBLEON(c, selmon) && !c->isfloating) {
if (c != sel)
break;
sel = NULL;
}
/* Return if no other tiled window was found */
if (&c->link == &clients)
return;
/* If we passed sel, move c to the front; otherwise, move sel to the
* front */
if (!sel)
sel = c;
wl_list_remove(&sel->link);
wl_list_insert(&clients, &sel->link);
focusclient(sel, 1);
arrange(selmon);
}
#ifdef XWAYLAND
void
activatex11(struct wl_listener *listener, void *data)
{
Client *c = wl_container_of(listener, c, activate);
/* Only "managed" windows can be activated */
if (c->type == X11Managed)
wlr_xwayland_surface_activate(c->surface.xwayland, 1);
}
void
configurex11(struct wl_listener *listener, void *data)
{
Client *c = wl_container_of(listener, c, configure);
struct wlr_xwayland_surface_configure_event *event = data;
wlr_xwayland_surface_configure(c->surface.xwayland,
event->x, event->y, event->width, event->height);
}
void
createnotifyx11(struct wl_listener *listener, void *data)
{
Client *c;
wl_list_for_each(c, &clients, link)
if (c->isfullscreen && VISIBLEON(c, c->mon))
setfullscreen(c, 0);
/* Allocate a Client for this surface */
struct wlr_xwayland_surface *xwayland_surface = data;
c = xwayland_surface->data = calloc(1, sizeof(*c));
c->surface.xwayland = xwayland_surface;
c->type = xwayland_surface->override_redirect ? X11Unmanaged : X11Managed;
c->bw = borderpx;
/* Listen to the various events it can emit */
c->map.notify = mapnotify;
wl_signal_add(&xwayland_surface->events.map, &c->map);
c->unmap.notify = unmapnotify;
wl_signal_add(&xwayland_surface->events.unmap, &c->unmap);
c->activate.notify = activatex11;
wl_signal_add(&xwayland_surface->events.request_activate, &c->activate);
c->configure.notify = configurex11;
wl_signal_add(&xwayland_surface->events.request_configure, &c->configure);
c->destroy.notify = destroynotify;
wl_signal_add(&xwayland_surface->events.destroy, &c->destroy);
c->fullscreen.notify = fullscreennotify;
wl_signal_add(&xwayland_surface->events.request_fullscreen, &c->fullscreen);
c->isfullscreen = 0;
}
Atom
getatom(xcb_connection_t *xc, const char *name)
{
Atom atom = 0;
xcb_intern_atom_reply_t *reply;
xcb_intern_atom_cookie_t cookie = xcb_intern_atom(xc, 0, strlen(name), name);
if ((reply = xcb_intern_atom_reply(xc, cookie, NULL)))
atom = reply->atom;
free(reply);
return atom;
}
void
renderindependents(struct wlr_output *output, struct timespec *now)
{
Client *c;
wl_list_for_each_reverse(c, &independents, link) {
struct wlr_box geom = {
.x = c->surface.xwayland->x,
.y = c->surface.xwayland->y,
.width = c->surface.xwayland->width,
.height = c->surface.xwayland->height,
};
/* Only render visible clients which show on this output */
if (!wlr_output_layout_intersects(output_layout, output, &geom))
continue;
struct render_data rdata = {
.output = output,
.when = now,
.x = c->surface.xwayland->x,
.y = c->surface.xwayland->y,
};
wlr_surface_for_each_surface(c->surface.xwayland->surface, render, &rdata);
}
}
void
updatewindowtype(Client *c)
{
for (size_t i = 0; i < c->surface.xwayland->window_type_len; i++)
if (c->surface.xwayland->window_type[i] == netatom[NetWMWindowTypeDialog] ||
c->surface.xwayland->window_type[i] == netatom[NetWMWindowTypeSplash] ||
c->surface.xwayland->window_type[i] == netatom[NetWMWindowTypeToolbar] ||
c->surface.xwayland->window_type[i] == netatom[NetWMWindowTypeUtility])
c->isfloating = 1;
}
void
xwaylandready(struct wl_listener *listener, void *data)
{
xcb_connection_t *xc = xcb_connect(xwayland->display_name, NULL);
int err = xcb_connection_has_error(xc);
if (err) {
fprintf(stderr, "xcb_connect to X server failed with code %d\n. Continuing with degraded functionality.\n", err);
return;
}
/* Collect atoms we are interested in. If getatom returns 0, we will
* not detect that window type. */
netatom[NetWMWindowTypeDialog] = getatom(xc, "_NET_WM_WINDOW_TYPE_DIALOG");
netatom[NetWMWindowTypeSplash] = getatom(xc, "_NET_WM_WINDOW_TYPE_SPLASH");
netatom[NetWMWindowTypeUtility] = getatom(xc, "_NET_WM_WINDOW_TYPE_TOOLBAR");
netatom[NetWMWindowTypeToolbar] = getatom(xc, "_NET_WM_WINDOW_TYPE_UTILITY");
/* assign the one and only seat */
wlr_xwayland_set_seat(xwayland, seat);
/* Set the default XWayland cursor to match the rest of dwl. */
struct wlr_xcursor *xcursor = wlr_xcursor_manager_get_xcursor(cursor_mgr, "left_ptr", 1);
wlr_xwayland_set_cursor(xwayland,
xcursor->images[0]->buffer, xcursor->images[0]->width * 4,
xcursor->images[0]->width, xcursor->images[0]->height,
xcursor->images[0]->hotspot_x, xcursor->images[0]->hotspot_y);
xcb_disconnect(xc);
}
Client *
xytoindependent(double x, double y)
{
/* Find the topmost visible independent at point (x, y).
* For independents, the most recently created can be used as the "top".
* We rely on the X11 convention of unmapping unmanaged when the "owning"
* client loses focus, which ensures that unmanaged are only visible on
* the current tag. */
Client *c;
wl_list_for_each_reverse(c, &independents, link) {
struct wlr_box geom = {
.x = c->surface.xwayland->x,
.y = c->surface.xwayland->y,
.width = c->surface.xwayland->width,
.height = c->surface.xwayland->height,
};
if (wlr_box_contains_point(&geom, x, y))
return c;
}
return NULL;
}
#endif
int
main(int argc, char *argv[])
{
char *startup_cmd = NULL;
int c;
while ((c = getopt(argc, argv, "s:h")) != -1) {
if (c == 's')
startup_cmd = optarg;
else
goto usage;
}
if (optind < argc)
goto usage;
// Wayland requires XDG_RUNTIME_DIR for creating its communications
// socket
if (!getenv("XDG_RUNTIME_DIR"))
BARF("XDG_RUNTIME_DIR must be set");
setup();
run(startup_cmd);
cleanup();
return EXIT_SUCCESS;
usage:
BARF("Usage: %s [-s startup command]", argv[0]);
}