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dwl/dwl.c
Guido Cella 1024928c15 deactivate focused client when spawning a new one 
Because maprequest immediately calls wl_list_insert(&fstack, &c->flink),
in the following call to setmon(), the selclient() which is passed to
focusclient() as the old client is actually the newly mapped client, and
the real old one is never deactivated. You can see this by, for example,
opening Chromium's devtools, then spawning a terminal. The background of
the focused line in the devtools doesn't change from light blue to grey.

We can't just remove wl_list_insert(&fstack, &c->flink) from maprequest,
because calling wl_list_remove in focusclient() with a client that has
not been added to the list causes a segmentation fault.
Therefore we fix the focusclient call by not passing it the old client
every time, but instead using the wlroots function that gets the focused
surface and deactivate that, like in TinyWL.
This also avoids getting the selected client and passing it to
focusclient() on every call unnecessarily, and will allow removing
shouldfocusclients in a future commit by checking if old is a layer
surface instead.
2020-12-19 12:34:31 +01:00

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/*
* 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 <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_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_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/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)
#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;
#endif
struct wl_listener commit;
struct wl_listener map;
struct wl_listener unmap;
struct wl_listener destroy;
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 */
} 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;
};
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, bool 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 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 maprequest(struct wl_listener *listener, void *data);
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, bool 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 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 bool shouldfocusclients();
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 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 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_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_cursor *cursor;
static struct wlr_xcursor_manager *cursor_mgr;
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_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 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) {
struct {
uint32_t singular_anchor;
uint32_t anchor_triplet;
int *positive_axis;
int *negative_axis;
int margin;
} edges[4];
if (exclusive <= 0)
return;
// Top
edges[0].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
edges[0].anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
edges[0].positive_axis = &usable_area->y;
edges[0].negative_axis = &usable_area->height;
edges[0].margin = margin_top;
// Bottom
edges[1].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
edges[1].anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
edges[1].positive_axis = NULL;
edges[1].negative_axis = &usable_area->height;
edges[1].margin = margin_bottom;
// Left
edges[2].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT;
edges[2].anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
edges[2].positive_axis = &usable_area->x;
edges[2].negative_axis = &usable_area->width;
edges[2].margin = margin_left;
// Right
edges[3].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
edges[3].anchor_triplet =
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
edges[3].positive_axis = NULL;
edges[3].negative_axis = &usable_area->width;
edges[3].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)
{
const char *appid, *title;
unsigned int i, newtags = 0;
const Rule *r;
Monitor *mon = selmon, *m;
/* rule matching */
c->isfloating = 0;
#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;
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);
/* XXX recheck pointer focus here... or in resize()? */
}
void
arrangelayer(Monitor *m, struct wl_list *list, struct wlr_box *usable_area, bool 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 bounds;
struct wlr_box box = {
.width = state->desired_width,
.height = state->desired_height
};
const uint32_t both_horiz = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
| ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
const uint32_t both_vert = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
| ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
if (exclusive != (state->exclusive_zone > 0))
continue;
bounds = state->exclusive_zone == -1 ? full_area : *usable_area;
// Horizontal axis
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
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;
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);
// Arrange exclusive surfaces from top->bottom
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
&usable_area, true);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
&usable_area, true);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
&usable_area, true);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
&usable_area, true);
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, false);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
&usable_area, false);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
&usable_area, false);
arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
&usable_area, false);
// Find topmost keyboard interactive layer, if such a layer exists
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) {
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;
/* 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;
struct wlr_keyboard *keyboard;
uint32_t mods;
Client *c;
const Button *b;
switch (event->state) {
case WLR_BUTTON_PRESSED:;
/* Change focus if the button was _pressed_ over a client */
if ((c = xytoclient(cursor->x, cursor->y)))
focusclient(c, 1);
keyboard = wlr_seat_get_keyboard(seat);
mods = wlr_keyboard_get_modifiers(keyboard);
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. */
/* XXX 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->destroy.link);
free(kb);
}
void
cleanupmon(struct wl_listener *listener, void *data)
{
struct wlr_output *wlr_output = data;
Monitor *m = wlr_output->data;
int nmons = wl_list_length(&mons), i = 0;
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();
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;
Monitor *m;
if (!wlr_output)
return;
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)
{
struct xkb_context *context;
struct xkb_keymap *keymap;
Keyboard *kb;
kb = device->data = calloc(1, sizeof(*kb));
kb->device = device;
/* Prepare an XKB keymap and assign it to the keyboard. */
context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
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;
Monitor *m;
const MonitorRule *r;
size_t nlayers = LENGTH(m->layers);
/* 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 */
m = wlr_output->data = calloc(1, sizeof(*m));
m->wlr_output = wlr_output;
m->tagset[0] = m->tagset[1] = 1;
for (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] = m->lt[1] = r->lt;
wlr_output_set_transform(wlr_output, r->rr);
break;
}
}
/* 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);
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. 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.
*
* 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_auto(output_layout, wlr_output);
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;
/* 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 = maprequest;
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);
}
void
createlayersurface(struct wl_listener *listener, void *data)
{
struct wlr_layer_surface_v1 *wlr_layer_surface = data;
LayerSurface *layersurface;
Monitor *m;
struct wlr_layer_surface_v1_state old_state;
if (!wlr_layer_surface->output) {
wlr_layer_surface->output = selmon->wlr_output;
}
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;
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
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)
{
/* 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);
Monitor *m;
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) {
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);
#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);
}
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)
{
struct wlr_keyboard *kb = wlr_seat_get_keyboard(seat);
struct wlr_surface *old = seat->keyboard_state.focused_surface;
/* Raise client in stacking order if requested */
if (c && lift) {
wl_list_remove(&c->slink);
wl_list_insert(&stack, &c->slink);
}
/* Nothing else to do? */
if (c && WLR_SURFACE(c) == old)
return;
/* 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), false);
#ifdef XWAYLAND
else if (wlr_surface_is_xwayland_surface(old))
wlr_xwayland_surface_activate(
wlr_xwayland_surface_from_wlr_surface(old), false);
#endif
}
/* Update wlroots' keyboard focus */
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 */
if (shouldfocusclients(c->mon))
wlr_seat_keyboard_notify_enter(seat, WLR_SURFACE(c),
kb->keycodes, kb->num_keycodes, &kb->modifiers);
/* Put the new client atop the focus stack and select its monitor */
wl_list_remove(&c->flink);
wl_list_insert(&fstack, &c->flink);
selmon = c->mon;
/* 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;
uint32_t caps;
switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
createkeyboard(device);
break;
case WLR_INPUT_DEVICE_POINTER:
createpointer(device);
break;
default:
/* XXX 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. */
/* XXX do we actually require a cursor? */
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)
{
/* 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;
int i;
/* 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);
/* On _press_, attempt to process a compositor keybinding. */
if (event->state == WLR_KEY_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
maprequest(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);
#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);
}
void
monocle(Monitor *m)
{
Client *c;
wl_list_for_each(c, &clients, link) {
if (!VISIBLEON(c, m) || c->isfloating)
continue;
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)
{
double sx = 0, sy = 0;
struct wlr_surface *surface = NULL;
Client *c = NULL;
struct timespec now;
if (!time) {
clock_gettime(CLOCK_MONOTONIC, &now);
time = now.tv_sec * 1000 + now.tv_nsec / 1000000;
}
/* 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;
}
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)
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, false);
}
void
outputmgrapplyortest(struct wlr_output_configuration_v1 *config, bool test)
{
struct wlr_output_configuration_head_v1 *config_head;
bool ok = true;
Arg ar = {.i = -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;
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, true);
}
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;
}
/* 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)
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;
double ox = 0, oy = 0;
struct wlr_box obox;
float matrix[9];
enum wl_output_transform transform;
/* 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). */
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. */
obox.x = ox + rdata->x + sx;
obox.y = oy + rdata->y + sy;
obox.width = surface->current.width;
obox.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.
*/
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);
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)
{
struct render_data rdata;
LayerSurface *layersurface;
wl_list_for_each(layersurface, layer_surfaces, link) {
rdata.output = layersurface->layer_surface->output;
rdata.when = now;
rdata.x = layersurface->geo.x;
rdata.y = layersurface->geo.y;
wlr_surface_for_each_surface(layersurface->layer_surface->surface,
render, &rdata);
}
}
void
rendermon(struct wl_listener *listener, void *data)
{
Client *c;
int render = 1;
/* 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. */
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.
*/
struct wlr_box *bbox = interact ? &sgeom : &c->mon->w;
c->geom.x = x;
c->geom.y = y;
c->geom.width = w;
c->geom.height = h;
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)
{
pid_t startup_pid = -1;
/* 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);
/* XXX 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);
if (startup_cmd) {
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->x *= scale;
box->y *= scale;
box->width *= scale;
box->height *= 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 */
/* XXX 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)
{
if (c->isfloating == floating)
return;
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;
/* XXX change layout symbol? */
arrange(selmon);
}
/* arg > 1.0 will set mfact absolutely */
void
setmfact(const Arg *arg)
{
float f;
if (!arg || !selmon->lt[selmon->sellt]->arrange)
return;
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;
/* XXX 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);
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);
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, true);
if (xwayland) {
wl_signal_add(&xwayland->events.ready, &xwayland_ready);
wl_signal_add(&xwayland->events.new_surface, &new_xwayland_surface);
setenv("DISPLAY", xwayland->display_name, true);
} 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))
;
}
bool
shouldfocusclients(Monitor *m)
{
LayerSurface *layersurface;
uint32_t layers_above_shell[] = {
ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY,
ZWLR_LAYER_SHELL_V1_LAYER_TOP,
};
for (size_t i = 0; i < LENGTH(layers_above_shell); ++i)
wl_list_for_each(layersurface, &m->layers[layers_above_shell[i]], link)
if (layersurface->layer_surface->current.keyboard_interactive &&
layersurface->layer_surface->mapped)
return false;
return true;
}
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 (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)
{
unsigned int newtags;
Client *sel = selclient();
if (!sel)
return;
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 = false;
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);
}
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
createnotifyx11(struct wl_listener *listener, void *data)
{
struct wlr_xwayland_surface *xwayland_surface = data;
Client *c;
/* Allocate a Client for this surface */
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 = maprequest;
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->destroy.notify = destroynotify;
wl_signal_add(&xwayland_surface->events.destroy, &c->destroy);
}
Atom
getatom(xcb_connection_t *xc, const char *name)
{
Atom atom = 0;
xcb_intern_atom_cookie_t cookie;
xcb_intern_atom_reply_t *reply;
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;
struct render_data rdata;
struct wlr_box geom;
wl_list_for_each_reverse(c, &independents, link) {
geom.x = c->surface.xwayland->x;
geom.y = c->surface.xwayland->y;
geom.width = c->surface.xwayland->width;
geom.height = c->surface.xwayland->height;
/* Only render visible clients which show on this output */
if (!wlr_output_layout_intersects(output_layout, output, &geom))
continue;
rdata.output = output;
rdata.when = now;
rdata.x = c->surface.xwayland->x;
rdata.y = c->surface.xwayland->y;
wlr_surface_for_each_surface(c->surface.xwayland->surface, render, &rdata);
}
}
void
updatewindowtype(Client *c)
{
size_t i;
for (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);
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;
struct wlr_box geom;
wl_list_for_each_reverse(c, &independents, link) {
geom.x = c->surface.xwayland->x;
geom.y = c->surface.xwayland->y;
geom.width = c->surface.xwayland->width;
geom.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]);
}
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