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sacrifice 24 lines to suckless style :)

This commit is contained in:
Devin J. Pohly 2020-05-02 15:21:36 -05:00
parent 20ed6cb3d5
commit ecdd012f6b
2 changed files with 80 additions and 56 deletions
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4
Makefile
View File

@ -1,8 +1,8 @@
WAYLAND_PROTOCOLS=$(shell pkg-config --variable=pkgdatadir wayland-protocols)
WAYLAND_SCANNER=$(shell pkg-config --variable=wayland_scanner wayland-scanner)
CFLAGS ?= -g -Wall -Wextra -Wno-unused-parameter -Wno-sign-compare
CFLAGS += -Werror -I. -DWLR_USE_UNSTABLE
CFLAGS ?= -g -Wall -Wextra -Werror -Wno-unused-parameter -Wno-sign-compare
CFLAGS += -I. -DWLR_USE_UNSTABLE -std=c99 -Werror=declaration-after-statement
PKGS = wlroots wayland-server xkbcommon
CFLAGS += $(foreach p,$(PKGS),$(shell pkg-config --cflags $(p)))

132
dwl.c
View File

@ -1,7 +1,7 @@
/*
* See LICENSE file for copyright and license details.
*/
#define _POSIX_C_SOURCE 200112L
#define _POSIX_C_SOURCE 200809L
#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
@ -267,23 +267,29 @@ void
buttonpress(struct wl_listener *listener, void *data)
{
struct wlr_event_pointer_button *event = data;
struct wlr_surface *surface;
struct wlr_keyboard *keyboard;
uint32_t mods;
Client *c;
int i;
switch (event->state) {
case WLR_BUTTON_PRESSED:;
/* Change focus if the button was _pressed_ over a client */
struct wlr_surface *surface;
Client *c = xytoclient(cursor->x, cursor->y, &surface, NULL, NULL);
c = xytoclient(cursor->x, cursor->y, &surface, NULL, NULL);
if (c)
focusclient(c, surface, 1);
struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat);
uint32_t mods = wlr_keyboard_get_modifiers(keyboard);
for (int i = 0; i < LENGTH(buttons); i++)
keyboard = wlr_seat_get_keyboard(seat);
mods = wlr_keyboard_get_modifiers(keyboard);
for (i = 0; i < LENGTH(buttons); i++) {
if (event->button == buttons[i].button &&
CLEANMASK(mods) == CLEANMASK(buttons[i].mod) &&
buttons[i].func) {
buttons[i].func(&buttons[i].arg);
return;
}
}
break;
case WLR_BUTTON_RELEASED:
/* If you released any buttons, we exit interactive move/resize mode. */
@ -308,12 +314,16 @@ buttonpress(struct wl_listener *listener, void *data)
void
createkeyboard(struct wlr_input_device *device)
{
Keyboard *kb = device->data = calloc(1, sizeof(*kb));
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. */
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
struct xkb_keymap *keymap = xkb_map_new_from_names(context, &xkb_rules,
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);
@ -339,6 +349,9 @@ 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;
struct wlr_output_mode *mode;
Monitor *m;
int i;
/* Some backends don't have modes. DRM+KMS does, and we need to set a mode
* before we can use the output. The mode is a tuple of (width, height,
@ -346,7 +359,7 @@ createmon(struct wl_listener *listener, void *data)
* just pick the monitor's preferred mode, a more sophisticated compositor
* would let the user configure it. */
if (!wl_list_empty(&wlr_output->modes)) {
struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
mode = wlr_output_preferred_mode(wlr_output);
wlr_output_set_mode(wlr_output, mode);
wlr_output_enable(wlr_output, 1);
if (!wlr_output_commit(wlr_output))
@ -354,11 +367,10 @@ createmon(struct wl_listener *listener, void *data)
}
/* Allocates and configures monitor state using configured rules */
Monitor *m = wlr_output->data = calloc(1, sizeof(*m));
m = wlr_output->data = calloc(1, sizeof(*m));
m->wlr_output = wlr_output;
m->tagset[0] = m->tagset[1] = 1;
int i;
for (i = 0; i < LENGTH(monrules); i++)
for (i = 0; i < LENGTH(monrules); i++) {
if (!monrules[i].name ||
!strcmp(wlr_output->name, monrules[i].name)) {
m->mfact = monrules[i].mfact;
@ -369,6 +381,7 @@ createmon(struct wl_listener *listener, void *data)
wlr_output_set_transform(wlr_output, monrules[i].rr);
break;
}
}
/* Sets up a listener for the frame notify event. */
m->frame.notify = rendermon;
wl_signal_add(&wlr_output->events.frame, &m->frame);
@ -393,11 +406,13 @@ 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 */
Client *c = xdg_surface->data = calloc(1, sizeof(*c));
c = xdg_surface->data = calloc(1, sizeof(*c));
c->xdg_surface = xdg_surface;
c->bw = borderpx;
@ -461,6 +476,10 @@ dirtomon(int dir)
void
focusclient(Client *c, struct wlr_surface *surface, int lift)
{
struct wlr_surface *prev_surface;
struct wlr_xdg_surface *previous;
struct wlr_keyboard *kb;
if (c) {
/* assert(VISIBLEON(c, c->mon)); ? */
/* Use top level surface if nothing more specific given */
@ -472,7 +491,7 @@ focusclient(Client *c, struct wlr_surface *surface, int lift)
/* XXX Need to understand xdg toplevel/popups to know if there's more
* simplification that can be done in this function */
struct wlr_surface *prev_surface = seat->keyboard_state.focused_surface;
prev_surface = seat->keyboard_state.focused_surface;
/* Don't re-focus an already focused surface. */
if (prev_surface == surface)
return;
@ -482,7 +501,7 @@ focusclient(Client *c, struct wlr_surface *surface, int lift)
* client know it no longer has focus and the client will
* repaint accordingly, e.g. stop displaying a caret.
*/
struct wlr_xdg_surface *previous = wlr_xdg_surface_from_wlr_surface(
previous = wlr_xdg_surface_from_wlr_surface(
seat->keyboard_state.focused_surface);
wlr_xdg_toplevel_set_activated(previous, 0);
}
@ -492,7 +511,7 @@ focusclient(Client *c, struct wlr_surface *surface, int lift)
* events to the appropriate clients without additional work on
* your part. If surface == NULL, this will clear focus.
*/
struct wlr_keyboard *kb = wlr_seat_get_keyboard(seat);
kb = wlr_seat_get_keyboard(seat);
wlr_seat_keyboard_notify_enter(seat, surface,
kb->keycodes, kb->num_keycodes, &kb->modifiers);
if (c) {
@ -523,10 +542,9 @@ void
focusstack(const Arg *arg)
{
/* Focus the next or previous client (in tiling order) on selmon */
Client *sel = selclient();
Client *c, *sel = selclient();
if (!sel)
return;
Client *c;
if (arg->i > 0) {
wl_list_for_each(c, &sel->link, link) {
if (&c->link == &clients)
@ -559,6 +577,7 @@ 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);
@ -574,7 +593,7 @@ inputdevice(struct wl_listener *listener, void *data)
* 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? */
uint32_t caps = WL_SEAT_CAPABILITY_POINTER;
caps = WL_SEAT_CAPABILITY_POINTER;
if (!wl_list_empty(&keyboards))
caps |= WL_SEAT_CAPABILITY_KEYBOARD;
wlr_seat_set_capabilities(seat, caps);
@ -589,13 +608,15 @@ keybinding(uint32_t mods, xkb_keysym_t sym)
* processing.
*/
int handled = 0;
for (int i = 0; i < LENGTH(keys); i++)
int i;
for (i = 0; i < LENGTH(keys); i++) {
if (sym == keys[i].keysym &&
CLEANMASK(mods) == CLEANMASK(keys[i].mod) &&
keys[i].func) {
keys[i].func(&keys[i].arg);
handled = 1;
}
}
return handled;
}
@ -605,6 +626,7 @@ 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;
@ -617,7 +639,7 @@ keypress(struct wl_listener *listener, void *data)
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 (int i = 0; i < nsyms; i++)
for (i = 0; i < nsyms; i++)
handled = keybinding(mods, syms[i]) || handled;
if (!handled) {
@ -680,6 +702,10 @@ motionabsolute(struct wl_listener *listener, void *data)
void
motionnotify(uint32_t time)
{
double sx = 0, sy = 0;
struct wlr_surface *surface = NULL;
Client *c;
/* Update selmon (even while dragging a window) */
if (sloppyfocus)
selmon = xytomon(cursor->x, cursor->y);
@ -698,9 +724,7 @@ motionnotify(uint32_t time)
}
/* Otherwise, find the client under the pointer and send the event along. */
double sx = 0, sy = 0;
struct wlr_surface *surface = NULL;
Client *c = xytoclient(cursor->x, cursor->y, &surface, &sx, &sy);
c = xytoclient(cursor->x, cursor->y, &surface, &sx, &sy);
/* If there's no client under the cursor, set the cursor image to a
* default. This is what makes the cursor image appear when you move it
* around the screen, not over any clients. */
@ -800,6 +824,10 @@ 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
@ -814,19 +842,15 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
* one next to the other, both 1080p, a client on the rightmost display might
* have layout coordinates of 2000,100. We need to translate that to
* output-local coordinates, or (2000 - 1920). */
double ox = 0, oy = 0;
wlr_output_layout_output_coords(
output_layout, output, &ox, &oy);
ox += rdata->x + sx, oy += rdata->y + sy;
/* We also have to apply the scale factor for HiDPI outputs. This is only
* part of the puzzle, dwl does not fully support HiDPI. */
struct wlr_box obox = {
.x = ox,
.y = oy,
.width = surface->current.width,
.height = surface->current.height,
};
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);
/*
@ -840,9 +864,7 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
* Naturally you can do this any way you like, for example to make a 3D
* compositor.
*/
float matrix[9];
enum wl_output_transform transform =
wlr_output_transform_invert(surface->current.transform);
transform = wlr_output_transform_invert(surface->current.transform);
wlr_matrix_project_box(matrix, &obox, transform, 0,
output->transform_matrix);
@ -858,41 +880,42 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
void
renderclients(Monitor *m, struct timespec *now)
{
Client *c;
double ox, oy;
int i, w, h;
struct render_data rdata;
struct wlr_box *borders;
/* 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. */
Client *c;
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;
double 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,
&ox, &oy);
int w = c->xdg_surface->surface->current.width;
int h = c->xdg_surface->surface->current.height;
struct wlr_box borders[] = {
w = c->xdg_surface->surface->current.width;
h = c->xdg_surface->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 */
};
int i;
for (i = 0; i < sizeof(borders) / sizeof(borders[0]); i++) {
for (i = 0; i < 4; i++) {
scalebox(&borders[i], m->wlr_output->scale);
wlr_render_rect(drw, &borders[i], bordercolor,
m->wlr_output->transform_matrix);
}
struct render_data rdata = {
.output = m->wlr_output,
.when = now,
.x = c->geom.x + c->bw,
.y = c->geom.y + c->bw,
};
/* 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,
wlr_xdg_surface_for_each_surface(c->xdg_surface, render, &rdata);
}
}
@ -1033,12 +1056,12 @@ selclient(void)
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 event is raised by the seat when a client provides a cursor image */
struct wlr_seat_pointer_request_set_cursor_event *event = data;
/* 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
@ -1087,10 +1110,11 @@ setmfact(const Arg *arg)
void
setmon(Client *c, Monitor *m)
{
if (c->mon == m)
return;
int hadfocus = (c == selclient());
int hadfocus;
Monitor *oldmon = c->mon;
if (oldmon == m)
return;
hadfocus = (c == selclient());
c->mon = m;
/* XXX leave/enter is not optimal but works */
if (oldmon) {