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xcb: add xcb_init(): checks the x server + extensions, and caches atoms

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This commit is contained in:
Daniel Eklöf 2018-11-17 11:47:34 +01:00
parent 8bf8a398b9
commit 7c468c20c0
5 changed files with 126 additions and 106 deletions
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10
bar.c
View file

@ -290,16 +290,6 @@ run(struct bar_run_context *run_ctx)
XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8,
strlen(title), title);
const xcb_atom_t _NET_WM_PID = get_atom(bar->conn, "_NET_WM_PID");
const xcb_atom_t _NET_WM_WINDOW_TYPE = get_atom(bar->conn, "_NET_WM_WINDOW_TYPE");
const xcb_atom_t _NET_WM_WINDOW_TYPE_DOCK = get_atom(bar->conn, "_NET_WM_WINDOW_TYPE_DOCK");
const xcb_atom_t _NET_WM_STATE = get_atom(bar->conn, "_NET_WM_STATE");
const xcb_atom_t _NET_WM_STATE_ABOVE = get_atom(bar->conn, "_NET_WM_STATE_ABOVE");
const xcb_atom_t _NET_WM_STATE_STICKY = get_atom(bar->conn, "_NET_WM_STATE_STICKY");
const xcb_atom_t _NET_WM_DESKTOP = get_atom(bar->conn, "_NET_WM_DESKTOP");
const xcb_atom_t _NET_WM_STRUT = get_atom(bar->conn, "_NET_WM_STRUT");
const xcb_atom_t _NET_WM_STRUT_PARTIAL = get_atom(bar->conn, "_NET_WM_STRUT_PARTIAL");
xcb_change_property(
bar->conn,
XCB_PROP_MODE_REPLACE, bar->win,

67
main.c
View file

@ -11,14 +11,10 @@
#include <sys/eventfd.h>
#include <xcb/xcb.h>
#include <xcb/randr.h>
#include <xcb/render.h>
#include "bar.h"
#include "config.h"
#include "yml.h"
#include "xcb.h"
static volatile sig_atomic_t aborted = 0;
@ -36,66 +32,7 @@ main(int argc, const char *const *argv)
struct yml_node *conf = yml_load(conf_file);
fclose(conf_file);
xcb_connection_t *conn = xcb_connect(NULL, NULL);
assert(conn != NULL);
const xcb_setup_t *setup = xcb_get_setup(conn);
/* Vendor string */
int length = xcb_setup_vendor_length(setup);
char *vendor = malloc(length + 1);
memcpy(vendor, xcb_setup_vendor(setup), length);
vendor[length] = '\0';
/* Vendor release number */
unsigned release = setup->release_number;
unsigned major = release / 10000000; release %= 10000000;
unsigned minor = release / 100000; release %= 100000;
unsigned patch = release / 1000;
printf("%s %u.%u.%u (protocol: %u.%u)\n", vendor,
major, minor, patch,
setup->protocol_major_version,
setup->protocol_minor_version);
free(vendor);
const xcb_query_extension_reply_t *randr =
xcb_get_extension_data(conn, &xcb_randr_id);
assert(randr->present);
const xcb_query_extension_reply_t *render =
xcb_get_extension_data(conn, &xcb_render_id);
assert(render->present);
xcb_randr_query_version_cookie_t randr_cookie =
xcb_randr_query_version(conn, XCB_RANDR_MAJOR_VERSION,
XCB_RANDR_MINOR_VERSION);
xcb_render_query_version_cookie_t render_cookie =
xcb_render_query_version(conn, XCB_RENDER_MAJOR_VERSION,
XCB_RENDER_MINOR_VERSION);
xcb_generic_error_t *e;
xcb_randr_query_version_reply_t *randr_version =
xcb_randr_query_version_reply(conn, randr_cookie, &e);
assert(e == NULL);
xcb_render_query_version_reply_t *render_version =
xcb_render_query_version_reply(conn, render_cookie, &e);
assert(e == NULL);
xcb_flush(conn);
printf(" RANDR: %u.%u\n"
" RENDER: %u.%u\n",
randr_version->major_version,
randr_version->minor_version,
render_version->major_version,
render_version->minor_version);
free(randr_version);
free(render_version);
xcb_disconnect(conn);
xcb_init();
const struct sigaction sa = {.sa_handler = &signal_handler};
sigaction(SIGINT, &sa, NULL);

30
modules/xwindow.c
View file

@ -17,14 +17,6 @@
#include "../bar.h"
#include "../xcb.h"
static bool globals_inited = false;
xcb_atom_t UTF8_STRING;
xcb_atom_t _NET_ACTIVE_WINDOW;
xcb_atom_t _NET_CURRENT_DESKTOP;
xcb_atom_t _NET_WM_VISIBLE_NAME;
xcb_atom_t _NET_WM_NAME;
xcb_atom_t _NET_WM_PID;
struct private {
/* Accessed from bar thread only */
struct particle *label;
@ -41,26 +33,6 @@ struct private {
xcb_window_t active_win;
};
static void
init_globals(void)
{
if (globals_inited)
return;
xcb_connection_t *conn = xcb_connect(NULL, NULL);
assert(conn != NULL);
UTF8_STRING = get_atom(conn, "UTF8_STRING");
_NET_ACTIVE_WINDOW = get_atom(conn, "_NET_ACTIVE_WINDOW");
_NET_CURRENT_DESKTOP = get_atom(conn, "_NET_CURRENT_DESKTOP");
_NET_WM_VISIBLE_NAME = get_atom(conn, "_NET_WM_VISIBLE_NAME");
_NET_WM_NAME = get_atom(conn, "_NET_WM_NAME");
_NET_WM_PID = get_atom(conn, "_NET_WM_PID");
globals_inited = true;
xcb_disconnect(conn);
}
static void
update_active_window(struct private *m)
{
@ -317,8 +289,6 @@ destroy(struct module *mod)
struct module *
module_xwindow(struct particle *label)
{
init_globals();
struct private *m = calloc(1, sizeof(*m));
m->label = label;
mtx_init(&m->lock, mtx_plain);

104
xcb.c
View file

@ -1,9 +1,113 @@
#include "xcb.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <xcb/xcb.h>
#include <xcb/randr.h>
#include <xcb/render.h>
xcb_atom_t UTF8_STRING;
xcb_atom_t _NET_WM_PID;
xcb_atom_t _NET_WM_WINDOW_TYPE;
xcb_atom_t _NET_WM_WINDOW_TYPE_DOCK;
xcb_atom_t _NET_WM_STATE;
xcb_atom_t _NET_WM_STATE_ABOVE;
xcb_atom_t _NET_WM_STATE_STICKY;
xcb_atom_t _NET_WM_DESKTOP;
xcb_atom_t _NET_WM_STRUT;
xcb_atom_t _NET_WM_STRUT_PARTIAL;
xcb_atom_t _NET_ACTIVE_WINDOW;
xcb_atom_t _NET_CURRENT_DESKTOP;
xcb_atom_t _NET_WM_VISIBLE_NAME;
xcb_atom_t _NET_WM_NAME;
bool
xcb_init(void)
{
xcb_connection_t *conn = xcb_connect(NULL, NULL);
assert(conn != NULL);
const xcb_setup_t *setup = xcb_get_setup(conn);
/* Vendor string */
int length = xcb_setup_vendor_length(setup);
char *vendor = malloc(length + 1);
memcpy(vendor, xcb_setup_vendor(setup), length);
vendor[length] = '\0';
/* Vendor release number */
unsigned release = setup->release_number;
unsigned major = release / 10000000; release %= 10000000;
unsigned minor = release / 100000; release %= 100000;
unsigned patch = release / 1000;
printf("%s %u.%u.%u (protocol: %u.%u)\n", vendor,
major, minor, patch,
setup->protocol_major_version,
setup->protocol_minor_version);
free(vendor);
const xcb_query_extension_reply_t *randr =
xcb_get_extension_data(conn, &xcb_randr_id);
assert(randr->present);
const xcb_query_extension_reply_t *render =
xcb_get_extension_data(conn, &xcb_render_id);
assert(render->present);
xcb_randr_query_version_cookie_t randr_cookie =
xcb_randr_query_version(conn, XCB_RANDR_MAJOR_VERSION,
XCB_RANDR_MINOR_VERSION);
xcb_render_query_version_cookie_t render_cookie =
xcb_render_query_version(conn, XCB_RENDER_MAJOR_VERSION,
XCB_RENDER_MINOR_VERSION);
xcb_generic_error_t *e;
xcb_randr_query_version_reply_t *randr_version =
xcb_randr_query_version_reply(conn, randr_cookie, &e);
assert(e == NULL);
xcb_render_query_version_reply_t *render_version =
xcb_render_query_version_reply(conn, render_cookie, &e);
assert(e == NULL);
xcb_flush(conn);
printf(" RANDR: %u.%u\n"
" RENDER: %u.%u\n",
randr_version->major_version,
randr_version->minor_version,
render_version->major_version,
render_version->minor_version);
free(randr_version);
free(render_version);
/* Cache atoms */
UTF8_STRING = get_atom(conn, "UTF8_STRING");
_NET_WM_PID = get_atom(conn, "_NET_WM_PID");
_NET_WM_WINDOW_TYPE = get_atom(conn, "_NET_WM_WINDOW_TYPE");
_NET_WM_WINDOW_TYPE_DOCK = get_atom(conn, "_NET_WM_WINDOW_TYPE_DOCK");
_NET_WM_STATE = get_atom(conn, "_NET_WM_STATE");
_NET_WM_STATE_ABOVE = get_atom(conn, "_NET_WM_STATE_ABOVE");
_NET_WM_STATE_STICKY = get_atom(conn, "_NET_WM_STATE_STICKY");
_NET_WM_DESKTOP = get_atom(conn, "_NET_WM_DESKTOP");
_NET_WM_STRUT = get_atom(conn, "_NET_WM_STRUT");
_NET_WM_STRUT_PARTIAL = get_atom(conn, "_NET_WM_STRUT_PARTIAL");
_NET_ACTIVE_WINDOW = get_atom(conn, "_NET_ACTIVE_WINDOW");
_NET_CURRENT_DESKTOP = get_atom(conn, "_NET_CURRENT_DESKTOP");
_NET_WM_VISIBLE_NAME = get_atom(conn, "_NET_WM_VISIBLE_NAME");
_NET_WM_NAME = get_atom(conn, "_NET_WM_NAME");
_NET_WM_PID = get_atom(conn, "_NET_WM_PID");
xcb_disconnect(conn);
return true;
}
xcb_atom_t
get_atom(xcb_connection_t *conn, const char *name)
{

19
xcb.h
View file

@ -1,6 +1,25 @@
#pragma once
#include <stdbool.h>
#include <xcb/xcb.h>
bool xcb_init(void);
xcb_atom_t get_atom(xcb_connection_t *conn, const char *name);
char *get_atom_name(xcb_connection_t *conn, xcb_atom_t atom);
/* Cached atoms */
xcb_atom_t UTF8_STRING;
xcb_atom_t _NET_WM_PID;
xcb_atom_t _NET_WM_WINDOW_TYPE;
xcb_atom_t _NET_WM_WINDOW_TYPE_DOCK;
xcb_atom_t _NET_WM_STATE;
xcb_atom_t _NET_WM_STATE_ABOVE;
xcb_atom_t _NET_WM_STATE_STICKY;
xcb_atom_t _NET_WM_DESKTOP;
xcb_atom_t _NET_WM_STRUT;
xcb_atom_t _NET_WM_STRUT_PARTIAL;
xcb_atom_t _NET_ACTIVE_WINDOW;
xcb_atom_t _NET_CURRENT_DESKTOP;
xcb_atom_t _NET_WM_VISIBLE_NAME;
xcb_atom_t _NET_WM_NAME;