+/*
+ * i3bar - an xcb-based status- and ws-bar for i3
+ *
+ * © 2010 Axel Wagner and contributors
+ *
+ * See file LICNSE for license information
+ *
+ * src/xcb.c: Communicating with X
+ *
+ */
#include <xcb/xcb.h>
#include <xcb/xproto.h>
#include <xcb/xcb_event.h>
#include <stdio.h>
#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
#include <string.h>
#include <i3/ipc.h>
#include <ev.h>
+#include <X11/Xlib.h>
+#include <X11/XKBlib.h>
+#include <X11/extensions/XKB.h>
+
#include "common.h"
/* We save the Atoms in an easy to access array, indexed by an enum */
xcb_window_t xcb_root;
xcb_font_t xcb_font;
+Display *xkb_dpy;
+int xkb_event_base;
+int mod_pressed;
+
/* Event-Watchers, to interact with the user */
ev_prepare *xcb_prep;
ev_check *xcb_chk;
ev_io *xcb_io;
+ev_io *xkb_io;
/*
* Converts a colorstring to a colorpixel as expected from xcb_change_gc.
return (r << 16 | g << 8 | b);
}
+/*
+ * Hides all bars (unmaps them)
+ *
+ */
+void hide_bars() {
+ i3_output *walk;
+ SLIST_FOREACH(walk, outputs, slist) {
+ xcb_unmap_window(xcb_connection, walk->bar);
+ }
+ stop_child();
+}
+
+/*
+ * Unhides all bars (maps them)
+ *
+ */
+void unhide_bars() {
+ i3_output *walk;
+ xcb_void_cookie_t cookie;
+ xcb_generic_error_t *err;
+ uint32_t mask;
+ uint32_t values[4];
+
+ cont_child();
+
+ SLIST_FOREACH(walk, outputs, slist) {
+ if (walk->bar == XCB_NONE) {
+ continue;
+ }
+ mask = XCB_CONFIG_WINDOW_X |
+ XCB_CONFIG_WINDOW_Y |
+ XCB_CONFIG_WINDOW_WIDTH |
+ XCB_CONFIG_WINDOW_HEIGHT;
+ values[0] = walk->rect.x;
+ values[1] = walk->rect.y + walk->rect.h - font_height - 6;
+ values[2] = walk->rect.w;
+ values[3] = font_height + 6;
+ printf("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
+ cookie = xcb_configure_window_checked(xcb_connection,
+ walk->bar,
+ mask,
+ values);
+
+ if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
+ printf("ERROR: Could not reconfigure window. XCB-errorcode: %d\n", err->error_code);
+ exit(EXIT_FAILURE);
+ }
+ xcb_map_window(xcb_connection, walk->bar);
+ }
+}
+
/*
* Handle a button-press-event (i.c. a mouse click on one of our bars).
* We determine, wether the click occured on a ws-button or if the scroll-
void xcb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
}
+/*
+ * We need to bind to the modifier per XKB. Sadly, XCB does not implement this
+ *
+ */
+void xkb_io_cb(struct ev_loop *loop, ev_io *watcher, int revents) {
+ XkbEvent ev;
+ int modstate;
+
+ printf("Got XKB-Event!\n");
+
+ while (XPending(xkb_dpy)) {
+ XNextEvent(xkb_dpy, (XEvent*)&ev);
+
+ if (ev.type != xkb_event_base) {
+ printf("ERROR: No Xkb-Event!\n");
+ continue;
+ }
+
+ if (ev.any.xkb_type != XkbStateNotify) {
+ printf("ERROR: No State Notify!\n");
+ continue;
+ }
+
+ unsigned int mods = ev.state.mods;
+ modstate = mods & Mod4Mask;
+ }
+
+ if (modstate != mod_pressed) {
+ if (modstate == 0) {
+ printf("Mod4 got released!\n");
+ hide_bars();
+ } else {
+ printf("Mod4 got pressed!\n");
+ unhide_bars();
+ }
+ mod_pressed = modstate;
+ }
+}
+
/*
* Calculate the rendered width of a string with the configured font.
* The string has to be encoded in ucs2 and glyph_len has to be the length
int get_string_width(xcb_char2b_t *string, int glyph_len) {
xcb_query_text_extents_cookie_t cookie;
xcb_query_text_extents_reply_t *reply;
- xcb_generic_error_t *error;
+ xcb_generic_error_t *error = NULL;
int width;
cookie = xcb_query_text_extents(xcb_connection, xcb_font, glyph_len, string);
reply = xcb_query_text_extents_reply(xcb_connection, cookie, &error);
- if (reply == NULL) {
- printf("ERROR: Could not get text extents!");
- return 7;
+ if (error != NULL) {
+ printf("ERROR: Could not get text extents! XCB-errorcode: %d\n", error->error_code);
+ exit(EXIT_FAILURE);
}
width = reply->overall_width;
/* We load and allocate the font */
xcb_font = xcb_generate_id(xcb_connection);
- xcb_open_font(xcb_connection,
- xcb_font,
- strlen(fontname),
- fontname);
+ xcb_void_cookie_t open_font_cookie;
+ open_font_cookie = xcb_open_font_checked(xcb_connection,
+ xcb_font,
+ strlen(fontname),
+ fontname);
+
+ xcb_generic_error_t *err = xcb_request_check(xcb_connection,
+ open_font_cookie);
+
+ if (err != NULL) {
+ printf("ERROR: Could not open font! XCB-Error-Code: %d\n", err->error_code);
+ exit(EXIT_FAILURE);
+ }
/* We also need the fontheight to configure our bars accordingly */
- xcb_list_fonts_with_info_cookie_t cookie;
- cookie = xcb_list_fonts_with_info(xcb_connection,
- 1,
- strlen(fontname),
- fontname);
+ xcb_list_fonts_with_info_cookie_t font_info_cookie;
+ font_info_cookie = xcb_list_fonts_with_info(xcb_connection,
+ 1,
+ strlen(fontname),
+ fontname);
+
+ int xkb_major, xkb_minor, xkb_errbase, xkb_err;
+ xkb_major = XkbMajorVersion;
+ xkb_minor = XkbMinorVersion;
+
+ xkb_dpy = XkbOpenDisplay(":0",
+ &xkb_event_base,
+ &xkb_errbase,
+ &xkb_major,
+ &xkb_minor,
+ &xkb_err);
+
+ if (xkb_dpy == NULL) {
+ printf("ERROR: No XKB!\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if (fcntl(ConnectionNumber(xkb_dpy), F_SETFD, FD_CLOEXEC) == -1) {
+ fprintf(stderr, "Could not set FD_CLOEXEC on xkbdpy\n");
+ exit(EXIT_FAILURE);
+ }
+
+ int i1;
+ if (!XkbQueryExtension(xkb_dpy, &i1, &xkb_event_base, &xkb_errbase, &xkb_major, &xkb_minor)) {
+ printf("ERROR: XKB not supported by X-server!\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if (!XkbSelectEvents(xkb_dpy, XkbUseCoreKbd, XkbStateNotifyMask, XkbStateNotifyMask)) {
+ printf("Could not grab Key!\n");
+ exit(EXIT_FAILURE);
+ }
/* The varios Watchers to communicate with xcb */
xcb_io = malloc(sizeof(ev_io));
xcb_prep = malloc(sizeof(ev_prepare));
xcb_chk = malloc(sizeof(ev_check));
+ xkb_io = malloc(sizeof(ev_io));
ev_io_init(xcb_io, &xcb_io_cb, xcb_get_file_descriptor(xcb_connection), EV_READ);
ev_prepare_init(xcb_prep, &xcb_prep_cb);
ev_check_init(xcb_chk, &xcb_chk_cb);
+ ev_io_init(xkb_io, &xkb_io_cb, ConnectionNumber(xkb_dpy), EV_READ);
ev_io_start(main_loop, xcb_io);
ev_prepare_start(main_loop, xcb_prep);
ev_check_start(main_loop, xcb_chk);
+ ev_io_start(main_loop, xkb_io);
+
+ XFlush(xkb_dpy);
/* Now we get the atoms and save them in a nice data-structure */
get_atoms();
/* Now we calculate the font-height */
xcb_list_fonts_with_info_reply_t *reply;
reply = xcb_list_fonts_with_info_reply(xcb_connection,
- cookie,
+ font_info_cookie,
NULL);
font_height = reply->font_ascent + reply->font_descent;
FREE(reply);
void get_atoms() {
xcb_intern_atom_reply_t *reply;
#define ATOM_DO(name) reply = xcb_intern_atom_reply(xcb_connection, atom_cookies[name], NULL); \
+ if (reply == NULL) { \
+ printf("ERROR: Could not get atom %s\n", #name); \
+ exit(EXIT_FAILURE); \
+ } \
atoms[name] = reply->atom; \
free(reply);
uint32_t mask;
uint32_t values[4];
+ xcb_void_cookie_t cookie;
+ xcb_generic_error_t *err;
+
i3_output *walk;
SLIST_FOREACH(walk, outputs, slist) {
if (!walk->active) {
printf("Creating Window for output %s\n", walk->name);
walk->bar = xcb_generate_id(xcb_connection);
- mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
+ mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
/* Black background */
values[0] = xcb_screens->black_pixel;
+ /* i3 is not supposed to manage our bar-windows */
+ values[1] = 1;
/* The events we want to receive */
- values[1] = XCB_EVENT_MASK_EXPOSURE |
+ values[2] = XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_BUTTON_PRESS;
- xcb_create_window(xcb_connection,
- xcb_screens->root_depth,
- walk->bar,
- xcb_root,
- walk->rect.x, walk->rect.y,
- walk->rect.w, font_height + 6,
- 1,
- XCB_WINDOW_CLASS_INPUT_OUTPUT,
- xcb_screens->root_visual,
- mask,
- values);
+ cookie = xcb_create_window_checked(xcb_connection,
+ xcb_screens->root_depth,
+ walk->bar,
+ xcb_root,
+ walk->rect.x, walk->rect.y,
+ walk->rect.w, font_height + 6,
+ 1,
+ XCB_WINDOW_CLASS_INPUT_OUTPUT,
+ xcb_screens->root_visual,
+ mask,
+ values);
+ if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
+ printf("ERROR: Could not create Window. XCB-errorcode: %d\n", err->error_code);
+ exit(EXIT_FAILURE);
+ }
/* We want dock-windows (for now) */
xcb_change_property(xcb_connection,
32,
1,
(unsigned char*) &atoms[_NET_WM_WINDOW_TYPE_DOCK]);
+ if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
+ printf("ERROR: Could not set dock mode. XCB-errorcode: %d\n", err->error_code);
+ exit(EXIT_FAILURE);
+ }
/* We also want a graphics-context (the "canvas" on which we draw) */
walk->bargc = xcb_generate_id(xcb_connection);
mask = XCB_GC_FONT;
values[0] = xcb_font;
- xcb_create_gc(xcb_connection,
- walk->bargc,
- walk->bar,
- mask,
- values);
+ cookie = xcb_create_gc_checked(xcb_connection,
+ walk->bargc,
+ walk->bar,
+ mask,
+ values);
+
+ if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
+ printf("ERROR: Could not create graphical context. XCB-errorcode: %d\n", err->error_code);
+ exit(EXIT_FAILURE);
+ }
/* We finally map the bar (display it on screen) */
- xcb_map_window(xcb_connection, walk->bar);
+ cookie = xcb_map_window_checked(xcb_connection, walk->bar);
+
+ if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
+ printf("ERROR: Could not map window. XCB-errorcode: %d\n", err->error_code);
+ exit(EXIT_FAILURE);
+ }
} else {
/* We already have a bar, so we just reconfigure it */
mask = XCB_CONFIG_WINDOW_X |
values[2] = walk->rect.w;
values[3] = font_height + 6;
printf("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
- xcb_configure_window(xcb_connection,
- walk->bar,
- mask,
- values);
+ cookie = xcb_configure_window_checked(xcb_connection,
+ walk->bar,
+ mask,
+ values);
+
+ if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
+ printf("ERROR: Could not reconfigure window. XCB-errorcode: %d\n", err->error_code);
+ exit(EXIT_FAILURE);
+ }
}
}
}
projects / i3 / i3 / blobdiff