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consolidate some of the ugliness into a separate file

Browse source 
Similar to Linux kernel approach, encapsulate some of the uglier
conditional compilation into inline functions in header files.

The goal is to make dwl.c more attractive to people who embrace the
suckless philosophy - simple, short, hackable, and easy to understand.
We want dwm users to feel comfortable here, not scare them off.  Plus,
if we do this right, the main dwl.c code should require only minimal
changes once XWayland is no longer a necessary evil.

According to `cloc`, this also brings dwl.c down below 2000 lines of
non-blank, non-comment code.
This commit is contained in:
Devin J. Pohly 2020-12-25 01:33:55 -05:00
parent bac3221a03
commit 388c5580cb
3 changed files with 200 additions and 127 deletions
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163
client.h Normal file
View file

@ -0,0 +1,163 @@
/*
* Attempt to consolidate unavoidable suck into one file, away from dwl.c. This
* file is not meant to be pretty. We use a .h file with static inline
* functions instead of a separate .c module, or function pointers like sway, so
* that they will simply compile out if the chosen #defines leave them unused.
*/
/* Leave this function first; it's used in the others */
static inline int
client_is_x11(Client *c)
{
#ifdef XWAYLAND
return c->type == X11Managed || c->type == X11Unmanaged;
#else
return 0;
#endif
}
/* The others */
static inline void
client_activate_surface(struct wlr_surface *s, int activated)
{
#ifdef XWAYLAND
if (wlr_surface_is_xwayland_surface(s)) {
wlr_xwayland_surface_activate(
wlr_xwayland_surface_from_wlr_surface(s), activated);
return;
}
#endif
if (wlr_surface_is_xdg_surface(s))
wlr_xdg_toplevel_set_activated(
wlr_xdg_surface_from_wlr_surface(s), activated);
}
static inline void
client_for_each_surface(Client *c, wlr_surface_iterator_func_t fn, void *data)
{
#ifdef XWAYLAND
if (client_is_x11(c)) {
wlr_surface_for_each_surface(c->surface.xwayland->surface,
fn, data);
return;
}
#endif
wlr_xdg_surface_for_each_surface(c->surface.xdg, fn, data);
}
static inline const char *
client_get_appid(Client *c)
{
#ifdef XWAYLAND
if (client_is_x11(c))
return c->surface.xwayland->class;
#endif
return c->surface.xdg->toplevel->app_id;
}
static inline void
client_get_geometry(Client *c, struct wlr_box *geom)
{
#ifdef XWAYLAND
if (client_is_x11(c)) {
geom->x = c->surface.xwayland->x;
geom->y = c->surface.xwayland->y;
geom->width = c->surface.xwayland->width;
geom->height = c->surface.xwayland->height;
return;
}
#endif
wlr_xdg_surface_get_geometry(c->surface.xdg, geom);
}
static inline const char *
client_get_title(Client *c)
{
#ifdef XWAYLAND
if (client_is_x11(c))
return c->surface.xwayland->title;
#endif
return c->surface.xdg->toplevel->title;
}
static inline int
client_is_float_type(Client *c)
{
#ifdef XWAYLAND
if (client_is_x11(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])
return 1;
#endif
return 0;
}
static inline int
client_is_unmanaged(Client *c)
{
#ifdef XWAYLAND
return c->type == X11Unmanaged;
#endif
return 0;
}
static inline void
client_send_close(Client *c)
{
#ifdef XWAYLAND
if (client_is_x11(c)) {
wlr_xwayland_surface_close(c->surface.xwayland);
return;
}
#endif
wlr_xdg_toplevel_send_close(c->surface.xdg);
}
static inline void
client_set_fullscreen(Client *c, int fullscreen)
{
#ifdef XWAYLAND
if (client_is_x11(c)) {
wlr_xwayland_surface_set_fullscreen(c->surface.xwayland, fullscreen);
return;
}
#endif
wlr_xdg_toplevel_set_fullscreen(c->surface.xdg, fullscreen);
}
static inline uint32_t
client_set_size(Client *c, uint32_t width, uint32_t height)
{
#ifdef XWAYLAND
if (client_is_x11(c)) {
wlr_xwayland_surface_configure(c->surface.xwayland,
c->geom.x, c->geom.y, width, height);
return 0;
}
#endif
return wlr_xdg_toplevel_set_size(c->surface.xdg, width, height);
}
static inline struct wlr_surface *
client_surface(Client *c)
{
#ifdef XWAYLAND
if (client_is_x11(c))
return c->surface.xwayland->surface;
#endif
return c->surface.xdg->surface;
}
static inline struct wlr_surface *
client_surface_at(Client *c, double cx, double cy, double *sx, double *sy)
{
#ifdef XWAYLAND
if (client_is_x11(c))
return wlr_surface_surface_at(c->surface.xwayland->surface,
cx, cy, sx, sy);
#endif
return wlr_xdg_surface_surface_at(c->surface.xdg, cx, cy, sx, sy);
}

4
config.mk
View file

@ -2,7 +2,7 @@
PREFIX = /usr/local PREFIX = /usr/local
# Default compile flags (overridable by environment) # Default compile flags (overridable by environment)
CFLAGS ?= -g -Wall -Wextra -Werror -Wno-unused-parameter -Wno-sign-compare -Wno-error=unused-function -Wdeclaration-after-statement CFLAGS ?= -g -Wall -Wextra -Werror -Wno-unused-parameter -Wno-sign-compare -Wno-unused-function -Wno-unused-variable -Wdeclaration-after-statement
# Uncomment to build XWayland support # Uncomment to build XWayland support
#CFLAGS += -DXWAYLAND CFLAGS += -DXWAYLAND

160
dwl.c
View file

@ -58,11 +58,6 @@
#define END(A) ((A) + LENGTH(A)) #define END(A) ((A) + LENGTH(A))
#define TAGMASK ((1 << LENGTH(tags)) - 1) #define TAGMASK ((1 << LENGTH(tags)) - 1)
#define ROUND(X) ((int)((X)+0.5)) #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 */ /* enums */
enum { CurNormal, CurMove, CurResize }; /* cursor */ enum { CurNormal, CurMove, CurResize }; /* cursor */
@ -93,14 +88,8 @@ typedef struct {
struct wl_list slink; struct wl_list slink;
union { union {
struct wlr_xdg_surface *xdg; struct wlr_xdg_surface *xdg;
#ifdef XWAYLAND
struct wlr_xwayland_surface *xwayland; struct wlr_xwayland_surface *xwayland;
#endif
} surface; } surface;
#ifdef XWAYLAND
struct wl_listener activate;
struct wl_listener configure;
#endif
struct wl_listener commit; struct wl_listener commit;
struct wl_listener map; struct wl_listener map;
struct wl_listener unmap; struct wl_listener unmap;
@ -110,6 +99,8 @@ typedef struct {
Monitor *mon; Monitor *mon;
#ifdef XWAYLAND #ifdef XWAYLAND
unsigned int type; unsigned int type;
struct wl_listener activate;
struct wl_listener configure;
#endif #endif
int bw; int bw;
unsigned int tags; unsigned int tags;
@ -326,10 +317,8 @@ static struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard_mgr;
static struct wlr_cursor *cursor; static struct wlr_cursor *cursor;
static struct wlr_xcursor_manager *cursor_mgr; static struct wlr_xcursor_manager *cursor_mgr;
#ifdef XWAYLAND
static struct wlr_xcursor *xcursor; static struct wlr_xcursor *xcursor;
static struct wlr_xcursor_manager *xcursor_mgr; static struct wlr_xcursor_manager *xcursor_mgr;
#endif
static struct wlr_seat *seat; static struct wlr_seat *seat;
static struct wl_list keyboards; static struct wl_list keyboards;
@ -366,7 +355,6 @@ static void configurex11(struct wl_listener *listener, void *data);
static void createnotifyx11(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 Atom getatom(xcb_connection_t *xc, const char *name);
static void renderindependents(struct wlr_output *output, struct timespec *now); 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 void xwaylandready(struct wl_listener *listener, void *data);
static Client *xytoindependent(double x, double y); static Client *xytoindependent(double x, double y);
static struct wl_listener new_xwayland_surface = {.notify = createnotifyx11}; static struct wl_listener new_xwayland_surface = {.notify = createnotifyx11};
@ -378,6 +366,9 @@ static Atom netatom[NetLast];
/* configuration, allows nested code to access above variables */ /* configuration, allows nested code to access above variables */
#include "config.h" #include "config.h"
/* attempt to encapsulate suck into one file */
#include "client.h"
/* compile-time check if all tags fit into an unsigned int bit array. */ /* compile-time check if all tags fit into an unsigned int bit array. */
struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; }; struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
@ -462,20 +453,11 @@ applyrules(Client *c)
unsigned int i, newtags = 0; unsigned int i, newtags = 0;
const Rule *r; const Rule *r;
Monitor *mon = selmon, *m; Monitor *mon = selmon, *m;
#ifdef XWAYLAND
if (c->type != XDGShell) { c->isfloating = client_is_float_type(c);
updatewindowtype(c); if (!(appid = client_get_appid(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; appid = broken;
if (!title) if (!(title = client_get_title(c)))
title = broken; title = broken;
for (r = rules; r < END(rules); r++) { for (r = rules; r < END(rules); r++) {
@ -1107,13 +1089,7 @@ setfullscreen(Client *c, int fullscreen)
{ {
c->isfullscreen = fullscreen; c->isfullscreen = fullscreen;
c->bw = (1 - fullscreen) * borderpx; c->bw = (1 - fullscreen) * borderpx;
client_set_fullscreen(c, fullscreen);
#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) { if (fullscreen) {
c->prevx = c->geom.x; c->prevx = c->geom.x;
@ -1166,7 +1142,7 @@ focusclient(Client *c, int lift)
wl_list_insert(&stack, &c->slink); wl_list_insert(&stack, &c->slink);
} }
if (c && WLR_SURFACE(c) == old) if (c && client_surface(c) == old)
return; return;
/* Put the new client atop the focus stack and select its monitor */ /* Put the new client atop the focus stack and select its monitor */
@ -1177,21 +1153,13 @@ focusclient(Client *c, int lift)
} }
/* Deactivate old client if focus is changing */ /* Deactivate old client if focus is changing */
if (old && (!c || WLR_SURFACE(c) != old)) { if (old && (!c || client_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, /* 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 * but only update its position in fstack to render its border with focuscolor
* and focus it after the overlay is closed. * and focus it after the overlay is closed.
* It's probably pointless to check if old is a layer surface * It's probably pointless to check if old is a layer surface
* since it can't be anything else at this point. */ * since it can't be anything else at this point. */
else if (wlr_surface_is_layer_surface(old)) { if (wlr_surface_is_layer_surface(old)) {
struct wlr_layer_surface_v1 *wlr_layer_surface = struct wlr_layer_surface_v1 *wlr_layer_surface =
wlr_layer_surface_v1_from_wlr_surface(old); wlr_layer_surface_v1_from_wlr_surface(old);
@ -1200,6 +1168,8 @@ focusclient(Client *c, int lift)
wlr_layer_surface->current.layer == ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY wlr_layer_surface->current.layer == ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY
)) ))
return; return;
} else {
client_activate_surface(old, 0);
} }
} }
@ -1211,16 +1181,11 @@ focusclient(Client *c, int lift)
/* Have a client, so focus its top-level wlr_surface */ /* Have a client, so focus its top-level wlr_surface */
kb = wlr_seat_get_keyboard(seat); kb = wlr_seat_get_keyboard(seat);
wlr_seat_keyboard_notify_enter(seat, WLR_SURFACE(c), wlr_seat_keyboard_notify_enter(seat, client_surface(c),
kb->keycodes, kb->num_keycodes, &kb->modifiers); kb->keycodes, kb->num_keycodes, &kb->modifiers);
/* Activate the new client */ /* Activate the new client */
#ifdef XWAYLAND client_activate_surface(client_surface(c), 1);
if (c->type != XDGShell)
wlr_xwayland_surface_activate(c->surface.xwayland, 1);
else
#endif
wlr_xdg_toplevel_set_activated(c->surface.xdg, 1);
} }
void void
@ -1390,13 +1355,7 @@ killclient(const Arg *arg)
Client *sel = selclient(); Client *sel = selclient();
if (!sel) if (!sel)
return; return;
client_send_close(sel);
#ifdef XWAYLAND
if (sel->type != XDGShell)
wlr_xwayland_surface_close(sel->surface.xwayland);
else
#endif
wlr_xdg_toplevel_send_close(sel->surface.xdg);
} }
void void
@ -1413,32 +1372,20 @@ mapnotify(struct wl_listener *listener, void *data)
/* Called when the surface is mapped, or ready to display on-screen. */ /* Called when the surface is mapped, or ready to display on-screen. */
Client *c = wl_container_of(listener, c, map), *oldfocus = selclient(); Client *c = wl_container_of(listener, c, map), *oldfocus = selclient();
#ifdef XWAYLAND if (client_is_unmanaged(c)) {
if (c->type == X11Unmanaged) {
/* Insert this independent into independents lists. */ /* Insert this independent into independents lists. */
wl_list_insert(&independents, &c->link); wl_list_insert(&independents, &c->link);
return; return;
} }
#endif
/* Insert this client into client lists. */ /* Insert this client into client lists. */
wl_list_insert(&clients, &c->link); wl_list_insert(&clients, &c->link);
wl_list_insert(&fstack, &c->flink); wl_list_insert(&fstack, &c->flink);
wl_list_insert(&stack, &c->slink); wl_list_insert(&stack, &c->slink);
#ifdef XWAYLAND client_get_geometry(c, &c->geom);
if (c->type != XDGShell) { c->geom.width += 2 * c->bw;
c->geom.x = c->surface.xwayland->x; c->geom.height += 2 * c->bw;
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 */ /* Set initial monitor, tags, floating status, and focus */
applyrules(c); applyrules(c);
@ -1527,16 +1474,8 @@ motionnotify(uint32_t time)
} }
#endif #endif
else if ((c = xytoclient(cursor->x, cursor->y))) { else if ((c = xytoclient(cursor->x, cursor->y))) {
#ifdef XWAYLAND surface = client_surface_at(c, cursor->x - c->geom.x - c->bw,
if (c->type != XDGShell) cursor->y - c->geom.y - c->bw, &sx, &sy);
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], else if ((surface = xytolayersurface(&selmon->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
cursor->x, cursor->y, &sx, &sy))) cursor->x, cursor->y, &sx, &sy)))
@ -1672,7 +1611,7 @@ pointerfocus(Client *c, struct wlr_surface *surface, double sx, double sy,
/* Use top level surface if nothing more specific given */ /* Use top level surface if nothing more specific given */
if (c && !surface) if (c && !surface)
surface = WLR_SURFACE(c); surface = client_surface(c);
/* If surface is NULL, clear pointer focus */ /* If surface is NULL, clear pointer focus */
if (!surface) { if (!surface) {
@ -1695,14 +1634,9 @@ pointerfocus(Client *c, struct wlr_surface *surface, double sx, double sy,
* of its surfaces, and make keyboard focus follow if desired. */ * of its surfaces, and make keyboard focus follow if desired. */
wlr_seat_pointer_notify_enter(seat, surface, sx, sy); wlr_seat_pointer_notify_enter(seat, surface, sx, sy);
if (!c) if (!c || client_is_unmanaged(c))
return; return;
#if XWAYLAND
if (c->type == X11Unmanaged)
return;
#endif
if (sloppyfocus && !internal_call) if (sloppyfocus && !internal_call)
focusclient(c, 0); focusclient(c, 0);
} }
@ -1789,7 +1723,7 @@ renderclients(Monitor *m, struct timespec *now)
output_layout, m->wlr_output, &c->geom)) output_layout, m->wlr_output, &c->geom))
continue; continue;
surface = WLR_SURFACE(c); surface = client_surface(c);
ox = c->geom.x, oy = c->geom.y; ox = c->geom.x, oy = c->geom.y;
wlr_output_layout_output_coords(output_layout, m->wlr_output, wlr_output_layout_output_coords(output_layout, m->wlr_output,
&ox, &oy); &ox, &oy);
@ -1819,12 +1753,7 @@ renderclients(Monitor *m, struct timespec *now)
rdata.when = now; rdata.when = now;
rdata.x = c->geom.x + c->bw; rdata.x = c->geom.x + c->bw;
rdata.y = c->geom.y + c->bw; rdata.y = c->geom.y + c->bw;
#ifdef XWAYLAND client_for_each_surface(c, render, &rdata);
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);
} }
} }
@ -1861,7 +1790,7 @@ rendermon(struct wl_listener *listener, void *data)
/* Do not render if any XDG clients have an outstanding resize. */ /* Do not render if any XDG clients have an outstanding resize. */
wl_list_for_each(c, &stack, slink) { wl_list_for_each(c, &stack, slink) {
if (c->resize) { if (c->resize) {
wlr_surface_send_frame_done(WLR_SURFACE(c), &now); wlr_surface_send_frame_done(client_surface(c), &now);
render = 0; render = 0;
} }
} }
@ -1915,15 +1844,8 @@ resize(Client *c, int x, int y, int w, int h, int interact)
c->geom.height = h; c->geom.height = h;
applybounds(c, bbox); applybounds(c, bbox);
/* wlroots makes this a no-op if size hasn't changed */ /* wlroots makes this a no-op if size hasn't changed */
#ifdef XWAYLAND c->resize = client_set_size(c, c->geom.width - 2 * c->bw,
if (c->type != XDGShell) c->geom.height - 2 * c->bw);
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 void
@ -2059,13 +1981,13 @@ setmon(Client *c, Monitor *m, unsigned int newtags)
/* TODO leave/enter is not optimal but works */ /* TODO leave/enter is not optimal but works */
if (oldmon) { if (oldmon) {
wlr_surface_send_leave(WLR_SURFACE(c), oldmon->wlr_output); wlr_surface_send_leave(client_surface(c), oldmon->wlr_output);
arrange(oldmon); arrange(oldmon);
} }
if (m) { if (m) {
/* Make sure window actually overlaps with the monitor */ /* Make sure window actually overlaps with the monitor */
applybounds(c, &m->m); applybounds(c, &m->m);
wlr_surface_send_enter(WLR_SURFACE(c), m->wlr_output); wlr_surface_send_enter(client_surface(c), m->wlr_output);
c->tags = newtags ? newtags : m->tagset[m->seltags]; /* assign tags of target monitor */ c->tags = newtags ? newtags : m->tagset[m->seltags]; /* assign tags of target monitor */
arrange(m); arrange(m);
} }
@ -2389,10 +2311,9 @@ unmapnotify(struct wl_listener *listener, void *data)
/* Called when the surface is unmapped, and should no longer be shown. */ /* Called when the surface is unmapped, and should no longer be shown. */
Client *c = wl_container_of(listener, c, unmap); Client *c = wl_container_of(listener, c, unmap);
wl_list_remove(&c->link); wl_list_remove(&c->link);
#ifdef XWAYLAND if (client_is_unmanaged(c))
if (c->type == X11Unmanaged)
return; return;
#endif
setmon(c, NULL, 0); setmon(c, NULL, 0);
wl_list_remove(&c->flink); wl_list_remove(&c->flink);
wl_list_remove(&c->slink); wl_list_remove(&c->slink);
@ -2607,17 +2528,6 @@ renderindependents(struct wlr_output *output, struct timespec *now)
} }
} }
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 void
xwaylandready(struct wl_listener *listener, void *data) xwaylandready(struct wl_listener *listener, void *data)
{ {