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i3/i3bar/src/xcb.c

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/*
* i3bar - an xcb-based status- and ws-bar for i3
*
* © 2010-2011 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_atom.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <i3/ipc.h>
#include <ev.h>
#include <errno.h>
#include <limits.h>
#include <X11/Xlib.h>
#include <X11/XKBlib.h>
#include <X11/extensions/XKB.h>
#include "common.h"
#if defined(__APPLE__)
/*
* Taken from FreeBSD
* Returns a pointer to a new string which is a duplicate of the
* string, but only copies at most n characters.
*
*/
char *strndup(const char *str, size_t n) {
size_t len;
char *copy;
for (len = 0; len < n && str[len]; len++)
continue;
if ((copy = malloc(len + 1)) == NULL)
return (NULL);
memcpy(copy, str, len);
copy[len] = '\0';
return (copy);
}
#endif
/* We save the Atoms in an easy to access array, indexed by an enum */
enum {
#define ATOM_DO(name) name,
#include "xcb_atoms.def"
NUM_ATOMS
};
xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
xcb_atom_t atoms[NUM_ATOMS];
/* Variables, that are the same for all functions at all times */
xcb_connection_t *xcb_connection;
xcb_screen_t *xcb_screen;
xcb_window_t xcb_root;
xcb_font_t xcb_font;
/* We need to cache some data to speed up text-width-prediction */
xcb_query_font_reply_t *font_info;
int font_height;
xcb_charinfo_t *font_table;
/* These are only relevant for XKB, which we only need for grabbing modifiers */
Display *xkb_dpy;
int xkb_event_base;
int mod_pressed = 0;
/* Because the statusline is the same on all outputs, we have
* global buffer to render it on */
xcb_gcontext_t statusline_ctx;
xcb_gcontext_t statusline_clear;
xcb_pixmap_t statusline_pm;
uint32_t statusline_width;
/* Event-Watchers, to interact with the user */
ev_prepare *xcb_prep;
ev_check *xcb_chk;
ev_io *xcb_io;
ev_io *xkb_io;
/* The parsed colors */
struct xcb_colors_t {
uint32_t bar_fg;
uint32_t bar_bg;
uint32_t active_ws_fg;
uint32_t active_ws_bg;
uint32_t inactive_ws_fg;
uint32_t inactive_ws_bg;
uint32_t urgent_ws_bg;
uint32_t urgent_ws_fg;
uint32_t focus_ws_bg;
uint32_t focus_ws_fg;
};
struct xcb_colors_t colors;
/* We define xcb_request_failed as a macro to include the relevant line-number */
#define xcb_request_failed(cookie, err_msg) _xcb_request_failed(cookie, err_msg, __LINE__)
int _xcb_request_failed(xcb_void_cookie_t cookie, char *err_msg, int line) {
xcb_generic_error_t *err;
if ((err = xcb_request_check(xcb_connection, cookie)) != NULL) {
fprintf(stderr, "[%s:%d] ERROR: %s. X Error Code: %d\n", __FILE__, line, err_msg, err->error_code);
return err->error_code;
}
return 0;
}
/*
* Predicts the length of text based on cached data.
* The string has to be encoded in ucs2 and glyph_len has to be the length
* of the string (in glyphs).
*
*/
uint32_t predict_text_extents(xcb_char2b_t *text, uint32_t length) {
/* If we don't have per-character data, return the maximum width */
if (font_table == NULL) {
return (font_info->max_bounds.character_width * length);
}
uint32_t width = 0;
uint32_t i;
for (i = 0; i < length; i++) {
xcb_charinfo_t *info;
int row = text[i].byte1;
int col = text[i].byte2;
if (row < font_info->min_byte1 || row > font_info->max_byte1 ||
col < font_info->min_char_or_byte2 || col > font_info->max_char_or_byte2) {
continue;
}
/* Don't you ask me, how this one works… */
info = &font_table[((row - font_info->min_byte1) *
(font_info->max_char_or_byte2 - font_info->min_char_or_byte2 + 1)) +
(col - font_info->min_char_or_byte2)];
if (info->character_width != 0 ||
(info->right_side_bearing |
info->left_side_bearing |
info->ascent |
info->descent) != 0) {
width += info->character_width;
}
}
return width;
}
/*
* Draws text given in UCS-2-encoding to a given drawable and position
*
*/
void draw_text(xcb_drawable_t drawable, xcb_gcontext_t ctx, int16_t x, int16_t y,
xcb_char2b_t *text, uint32_t glyph_count) {
int offset = 0;
int16_t pos_x = x;
int16_t font_ascent = font_info->font_ascent;
while (glyph_count > 0) {
uint8_t chunk_size = MIN(255, glyph_count);
uint32_t chunk_width = predict_text_extents(text + offset, chunk_size);
xcb_image_text_16(xcb_connection,
chunk_size,
drawable,
ctx,
pos_x, y + font_ascent,
text + offset);
offset += chunk_size;
pos_x += chunk_width;
glyph_count -= chunk_size;
}
}
/*
* Converts a colorstring to a colorpixel as expected from xcb_change_gc.
* s is assumed to be in the format "rrggbb"
*
*/
uint32_t get_colorpixel(const char *s) {
char strings[3][3] = { { s[0], s[1], '\0'} ,
{ s[2], s[3], '\0'} ,
{ s[4], s[5], '\0'} };
uint8_t r = strtol(strings[0], NULL, 16);
uint8_t g = strtol(strings[1], NULL, 16);
uint8_t b = strtol(strings[2], NULL, 16);
return (r << 16 | g << 8 | b);
}
/*
* Redraws the statusline to the buffer
*
*/
void refresh_statusline() {
int glyph_count;
if (statusline == NULL) {
return;
}
xcb_char2b_t *text = (xcb_char2b_t*) convert_utf8_to_ucs2(statusline, &glyph_count);
statusline_width = predict_text_extents(text, glyph_count);
xcb_rectangle_t rect = { 0, 0, xcb_screen->width_in_pixels, font_height };
xcb_poly_fill_rectangle(xcb_connection, statusline_pm, statusline_clear, 1, &rect);
draw_text(statusline_pm, statusline_ctx, 0, 0, text, glyph_count);
FREE(text);
}
/*
* Hides all bars (unmaps them)
*
*/
void hide_bars() {
if (!config.hide_on_modifier) {
return;
}
i3_output *walk;
SLIST_FOREACH(walk, outputs, slist) {
if (!walk->active) {
continue;
}
xcb_unmap_window(xcb_connection, walk->bar);
}
stop_child();
}
/*
* Unhides all bars (maps them)
*
*/
void unhide_bars() {
if (!config.hide_on_modifier) {
return;
}
i3_output *walk;
xcb_void_cookie_t cookie;
uint32_t mask;
uint32_t values[5];
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 |
XCB_CONFIG_WINDOW_STACK_MODE;
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;
values[4] = XCB_STACK_MODE_ABOVE;
DLOG("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 (xcb_request_failed(cookie, "Could not reconfigure window")) {
exit(EXIT_FAILURE);
}
xcb_map_window(xcb_connection, walk->bar);
}
}
/*
* Parse the colors into a format that we can use
*
*/
void init_colors(const struct xcb_color_strings_t *new_colors) {
#define PARSE_COLOR(name, def) \
do { \
colors.name = get_colorpixel(new_colors->name ? new_colors->name : def); \
} while (0)
PARSE_COLOR(bar_fg, "FFFFFF");
PARSE_COLOR(bar_bg, "000000");
PARSE_COLOR(active_ws_fg, "FFFFFF");
PARSE_COLOR(active_ws_bg, "480000");
PARSE_COLOR(inactive_ws_fg, "FFFFFF");
PARSE_COLOR(inactive_ws_bg, "240000");
PARSE_COLOR(urgent_ws_fg, "FFFFFF");
PARSE_COLOR(urgent_ws_bg, "002400");
PARSE_COLOR(focus_ws_fg, "FFFFFF");
PARSE_COLOR(focus_ws_bg, "480000");
#undef PARSE_COLOR
}
/*
* 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-
* wheel was used and change the workspace appropriately
*
*/
void handle_button(xcb_button_press_event_t *event) {
i3_ws *cur_ws;
/* Determine, which bar was clicked */
i3_output *walk;
xcb_window_t bar = event->event;
SLIST_FOREACH(walk, outputs, slist) {
if (walk->bar == bar) {
break;
}
}
if (walk == NULL) {
DLOG("Unknown Bar klicked!\n");
return;
}
/* TODO: Move this to extern get_ws_for_output() */
TAILQ_FOREACH(cur_ws, walk->workspaces, tailq) {
if (cur_ws->visible) {
break;
}
}
if (cur_ws == NULL) {
DLOG("No Workspace active?\n");
return;
}
int32_t x = event->event_x;
DLOG("Got Button %d\n", event->detail);
switch (event->detail) {
case 1:
/* Left Mousbutton. We determine, which button was clicked
* and set cur_ws accordingly */
TAILQ_FOREACH(cur_ws, walk->workspaces, tailq) {
DLOG("x = %d\n", x);
if (x < cur_ws->name_width + 10) {
break;
}
x -= cur_ws->name_width + 10;
}
if (cur_ws == NULL) {
return;
}
break;
case 4:
/* Mouse wheel down. We select the next ws */
if (cur_ws == TAILQ_FIRST(walk->workspaces)) {
cur_ws = TAILQ_LAST(walk->workspaces, ws_head);
} else {
cur_ws = TAILQ_PREV(cur_ws, ws_head, tailq);
}
break;
case 5:
/* Mouse wheel up. We select the previos ws */
if (cur_ws == TAILQ_LAST(walk->workspaces, ws_head)) {
cur_ws = TAILQ_FIRST(walk->workspaces);
} else {
cur_ws = TAILQ_NEXT(cur_ws, tailq);
}
break;
}
char buffer[strlen(cur_ws->name) + 11];
snprintf(buffer, 50, "workspace %s", cur_ws->name);
i3_send_msg(I3_IPC_MESSAGE_TYPE_COMMAND, buffer);
}
/*
* This function is called immediately bevor the main loop locks. We flush xcb
* then (and only then)
*
*/
void xcb_prep_cb(struct ev_loop *loop, ev_prepare *watcher, int revents) {
xcb_flush(xcb_connection);
}
/*
* This function is called immediately after the main loop locks, so when one
* of the watchers registered an event.
* We check wether an X-Event arrived and handle it.
*
*/
void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
xcb_generic_event_t *event;
while ((event = xcb_poll_for_event(xcb_connection)) == NULL) {
return;
}
switch (event->response_type & ~0x80) {
case XCB_EXPOSE:
/* Expose-events happen, when the window needs to be redrawn */
redraw_bars();
break;
case XCB_BUTTON_PRESS:
/* Button-press-events are mouse-buttons clicked on one of our bars */
handle_button((xcb_button_press_event_t*) event);
break;
}
FREE(event);
}
/*
* Dummy Callback. We only need this, so that the Prepare- and Check-Watchers
* are triggered
*
*/
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 = 0;
DLOG("Got XKB-Event!\n");
while (XPending(xkb_dpy)) {
XNextEvent(xkb_dpy, (XEvent*)&ev);
if (ev.type != xkb_event_base) {
ELOG("No Xkb-Event!\n");
continue;
}
if (ev.any.xkb_type != XkbStateNotify) {
ELOG("No State Notify!\n");
continue;
}
unsigned int mods = ev.state.mods;
modstate = mods & Mod4Mask;
}
if (modstate != mod_pressed) {
if (modstate == 0) {
DLOG("Mod4 got released!\n");
hide_bars();
} else {
DLOG("Mod4 got pressed!\n");
unhide_bars();
}
mod_pressed = modstate;
}
}
/*
* Initialize xcb and use the specified fontname for text-rendering
*
*/
char *init_xcb(char *fontname) {
/* FIXME: xcb_connect leaks Memory */
xcb_connection = xcb_connect(NULL, NULL);
if (xcb_connection_has_error(xcb_connection)) {
ELOG("Cannot open display\n");
exit(EXIT_FAILURE);
}
DLOG("Connected to xcb\n");
/* We have to request the atoms we need */
#define ATOM_DO(name) atom_cookies[name] = xcb_intern_atom(xcb_connection, 0, strlen(#name), #name);
#include "xcb_atoms.def"
xcb_screen = xcb_setup_roots_iterator(xcb_get_setup(xcb_connection)).data;
xcb_root = xcb_screen->root;
/* We load and allocate the font */
xcb_font = xcb_generate_id(xcb_connection);
xcb_void_cookie_t open_font_cookie;
open_font_cookie = xcb_open_font_checked(xcb_connection,
xcb_font,
strlen(fontname),
fontname);
/* We need to save info about the font, because we need the fonts height and
* information about the width of characters */
xcb_query_font_cookie_t query_font_cookie;
query_font_cookie = xcb_query_font(xcb_connection,
xcb_font);
/* To grab modifiers without blocking other applications from receiving key-events
* involving that modifier, we sadly have to use xkb which is not yet fully supported
* in xcb */
if (config.hide_on_modifier) {
int xkb_major, xkb_minor, xkb_errbase, xkb_err;
xkb_major = XkbMajorVersion;
xkb_minor = XkbMinorVersion;
char *dispname = getenv("DISPLAY");
if (dispname == NULL) {
dispname = ":0";
}
xkb_dpy = XkbOpenDisplay(dispname,
&xkb_event_base,
&xkb_errbase,
&xkb_major,
&xkb_minor,
&xkb_err);
if (xkb_dpy == NULL) {
ELOG("No XKB!\n");
exit(EXIT_FAILURE);
}
if (fcntl(ConnectionNumber(xkb_dpy), F_SETFD, FD_CLOEXEC) == -1) {
ELOG("Could not set FD_CLOEXEC on xkbdpy: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
int i1;
if (!XkbQueryExtension(xkb_dpy, &i1, &xkb_event_base, &xkb_errbase, &xkb_major, &xkb_minor)) {
ELOG("XKB not supported by X-server!\n");
exit(EXIT_FAILURE);
}
if (!XkbSelectEvents(xkb_dpy, XkbUseCoreKbd, XkbStateNotifyMask, XkbStateNotifyMask)) {
ELOG("Could not grab Key!\n");
exit(EXIT_FAILURE);
}
xkb_io = malloc(sizeof(ev_io));
ev_io_init(xkb_io, &xkb_io_cb, ConnectionNumber(xkb_dpy), EV_READ);
ev_io_start(main_loop, xkb_io);
XFlush(xkb_dpy);
}
/* We draw the statusline to a seperate pixmap, because it looks the same on all bars and
* this way, we can choose to crop it */
uint32_t mask = XCB_GC_FOREGROUND;
uint32_t vals[3] = { colors.bar_bg, colors.bar_bg, xcb_font };
statusline_clear = xcb_generate_id(xcb_connection);
xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
statusline_clear,
xcb_root,
mask,
vals);
mask |= XCB_GC_BACKGROUND | XCB_GC_FONT;
vals[0] = colors.bar_fg;
statusline_ctx = xcb_generate_id(xcb_connection);
xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection,
statusline_ctx,
xcb_root,
mask,
vals);
statusline_pm = xcb_generate_id(xcb_connection);
xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection,
xcb_screen->root_depth,
statusline_pm,
xcb_root,
xcb_screen->width_in_pixels,
xcb_screen->height_in_pixels);
/* 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));
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_start(main_loop, xcb_io);
ev_prepare_start(main_loop, xcb_prep);
ev_check_start(main_loop, xcb_chk);
/* Now we get the atoms and save them in a nice data-structure */
get_atoms();
xcb_get_property_cookie_t path_cookie;
path_cookie = xcb_get_property_unchecked(xcb_connection,
0,
xcb_root,
atoms[I3_SOCKET_PATH],
XCB_GET_PROPERTY_TYPE_ANY,
0, PATH_MAX);
/* We check, if i3 set it's socket-path */
xcb_get_property_reply_t *path_reply = xcb_get_property_reply(xcb_connection,
path_cookie,
NULL);
char *path = NULL;
if (path_reply) {
int len = xcb_get_property_value_length(path_reply);
if (len != 0) {
path = strndup(xcb_get_property_value(path_reply), len);
}
}
/* Now we save the font-infos */
font_info = xcb_query_font_reply(xcb_connection,
query_font_cookie,
NULL);
if (xcb_request_failed(open_font_cookie, "Could not open font")) {
exit(EXIT_FAILURE);
}
font_height = font_info->font_ascent + font_info->font_descent;
if (xcb_query_font_char_infos_length(font_info) == 0) {
font_table = NULL;
} else {
font_table = xcb_query_font_char_infos(font_info);
}
DLOG("Calculated Font-height: %d\n", font_height);
if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
exit(EXIT_FAILURE);
}
return path;
}
/*
* Cleanup the xcb-stuff.
* Called once, before the program terminates.
*
*/
void clean_xcb() {
i3_output *o_walk;
free_workspaces();
SLIST_FOREACH(o_walk, outputs, slist) {
destroy_window(o_walk);
FREE(o_walk->workspaces);
FREE(o_walk->name);
}
FREE_SLIST(outputs, i3_output);
FREE(outputs);
xcb_disconnect(xcb_connection);
ev_check_stop(main_loop, xcb_chk);
ev_prepare_stop(main_loop, xcb_prep);
ev_io_stop(main_loop, xcb_io);
FREE(xcb_chk);
FREE(xcb_prep);
FREE(xcb_io);
FREE(font_info);
}
/*
* Get the earlier requested atoms and save them in the prepared data-structure
*
*/
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) { \
ELOG("Could not get atom %s\n", #name); \
exit(EXIT_FAILURE); \
} \
atoms[name] = reply->atom; \
free(reply);
#include "xcb_atoms.def"
DLOG("Got Atoms\n");
}
/*
* Destroy the bar of the specified output
*
*/
void destroy_window(i3_output *output) {
if (output == NULL) {
return;
}
if (output->bar == XCB_NONE) {
return;
}
xcb_destroy_window(xcb_connection, output->bar);
output->bar = XCB_NONE;
}
/*
* Reallocate the statusline-buffer
*
*/
void realloc_sl_buffer() {
xcb_free_pixmap(xcb_connection, statusline_pm);
statusline_pm = xcb_generate_id(xcb_connection);
xcb_void_cookie_t sl_pm_cookie = xcb_create_pixmap_checked(xcb_connection,
xcb_screen->root_depth,
statusline_pm,
xcb_root,
xcb_screen->width_in_pixels,
xcb_screen->height_in_pixels);
uint32_t mask = XCB_GC_FOREGROUND;
uint32_t vals[3] = { colors.bar_bg, colors.bar_bg, xcb_font };
xcb_free_gc(xcb_connection, statusline_clear);
statusline_clear = xcb_generate_id(xcb_connection);
xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
statusline_clear,
xcb_root,
mask,
vals);
mask |= XCB_GC_BACKGROUND | XCB_GC_FONT;
vals[0] = colors.bar_fg;
statusline_ctx = xcb_generate_id(xcb_connection);
xcb_free_gc(xcb_connection, statusline_ctx);
xcb_void_cookie_t sl_ctx_cookie = xcb_create_gc_checked(xcb_connection,
statusline_ctx,
xcb_root,
mask,
vals);
if (xcb_request_failed(sl_pm_cookie, "Could not allocate statusline-buffer") ||
xcb_request_failed(clear_ctx_cookie, "Could not allocate statusline-buffer-clearcontext") ||
xcb_request_failed(sl_ctx_cookie, "Could not allocate statusline-buffer-context")) {
exit(EXIT_FAILURE);
}
}
/*
* Reconfigure all bars and create new for newly activated outputs
*
*/
void reconfig_windows() {
uint32_t mask;
uint32_t values[5];
i3_output *walk;
SLIST_FOREACH(walk, outputs, slist) {
if (!walk->active) {
/* If an output is not active, we destroy it's bar */
/* FIXME: Maybe we rather want to unmap? */
DLOG("Destroying window for output %s\n", walk->name);
destroy_window(walk);
continue;
}
if (walk->bar == XCB_NONE) {
DLOG("Creating Window for output %s\n", walk->name);
walk->bar = xcb_generate_id(xcb_connection);
walk->buffer = xcb_generate_id(xcb_connection);
mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
/* Black background */
values[0] = colors.bar_bg;
/* If hide_on_modifier is set, i3 is not supposed to manage our bar-windows */
values[1] = config.hide_on_modifier;
/* The events we want to receive */
values[2] = XCB_EVENT_MASK_EXPOSURE;
if (!config.disable_ws) {
values[2] |= XCB_EVENT_MASK_BUTTON_PRESS;
}
xcb_void_cookie_t win_cookie = xcb_create_window_checked(xcb_connection,
xcb_screen->root_depth,
walk->bar,
xcb_root,
walk->rect.x, walk->rect.y + walk->rect.h - font_height - 6,
walk->rect.w, font_height + 6,
1,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
xcb_screen->root_visual,
mask,
values);
/* The double-buffer we use to render stuff off-screen */
xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
xcb_screen->root_depth,
walk->buffer,
walk->bar,
walk->rect.w,
walk->rect.h);
/* We want dock-windows (for now). When override_redirect is set, i3 is ignoring
* this one */
xcb_void_cookie_t dock_cookie = xcb_change_property(xcb_connection,
XCB_PROP_MODE_REPLACE,
walk->bar,
atoms[_NET_WM_WINDOW_TYPE],
XCB_ATOM_ATOM,
32,
1,
(unsigned char*) &atoms[_NET_WM_WINDOW_TYPE_DOCK]);
/* We need to tell i3, where to reserve space for i3bar */
/* left, right, top, bottom, left_start_y, left_end_y,
* right_start_y, right_end_y, top_start_x, top_end_x, bottom_start_x,
* bottom_end_x */
/* A local struct to save the strut_partial property */
struct {
uint32_t left;
uint32_t right;
uint32_t top;
uint32_t bottom;
uint32_t left_start_y;
uint32_t left_end_y;
uint32_t right_start_y;
uint32_t right_end_y;
uint32_t top_start_x;
uint32_t top_end_x;
uint32_t bottom_start_x;
uint32_t bottom_end_x;
} __attribute__((__packed__)) strut_partial = {0,};
switch (config.dockpos) {
case DOCKPOS_NONE:
break;
case DOCKPOS_TOP:
strut_partial.top = font_height + 6;
strut_partial.top_start_x = walk->rect.x;
strut_partial.top_end_x = walk->rect.x + walk->rect.w;
break;
case DOCKPOS_BOT:
strut_partial.bottom = font_height + 6;
strut_partial.bottom_start_x = walk->rect.x;
strut_partial.bottom_end_x = walk->rect.x + walk->rect.w;
break;
}
xcb_void_cookie_t strut_cookie = xcb_change_property(xcb_connection,
XCB_PROP_MODE_REPLACE,
walk->bar,
atoms[_NET_WM_STRUT_PARTIAL],
XCB_ATOM_CARDINAL,
32,
12,
&strut_partial);
/* We also want a graphics-context for the bars (it defines the properties
* with which we draw to them) */
walk->bargc = xcb_generate_id(xcb_connection);
mask = XCB_GC_FONT;
values[0] = xcb_font;
xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(xcb_connection,
walk->bargc,
walk->bar,
mask,
values);
/* We finally map the bar (display it on screen), unless the modifier-switch is on */
xcb_void_cookie_t map_cookie;
if (!config.hide_on_modifier) {
map_cookie = xcb_map_window_checked(xcb_connection, walk->bar);
}
if (xcb_request_failed(win_cookie, "Could not create window") ||
xcb_request_failed(pm_cookie, "Could not create pixmap") ||
xcb_request_failed(dock_cookie, "Could not set dock mode") ||
xcb_request_failed(strut_cookie, "Could not set strut") ||
xcb_request_failed(gc_cookie, "Could not create graphical context") ||
(!config.hide_on_modifier && xcb_request_failed(map_cookie, "Could not map window"))) {
exit(EXIT_FAILURE);
}
} else {
/* We already have a bar, so we just reconfigure it */
mask = XCB_CONFIG_WINDOW_X |
XCB_CONFIG_WINDOW_Y |
XCB_CONFIG_WINDOW_WIDTH |
XCB_CONFIG_WINDOW_HEIGHT |
XCB_CONFIG_WINDOW_STACK_MODE;
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;
values[4] = XCB_STACK_MODE_ABOVE;
DLOG("Destroying buffer for output %s", walk->name);
xcb_free_pixmap(xcb_connection, walk->buffer);
DLOG("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
xcb_void_cookie_t cfg_cookie = xcb_configure_window_checked(xcb_connection,
walk->bar,
mask,
values);
DLOG("Recreating buffer for output %s", walk->name);
xcb_void_cookie_t pm_cookie = xcb_create_pixmap_checked(xcb_connection,
xcb_screen->root_depth,
walk->buffer,
walk->bar,
walk->rect.w,
walk->rect.h);
if (xcb_request_failed(cfg_cookie, "Could not reconfigure window")) {
exit(EXIT_FAILURE);
}
if (xcb_request_failed(pm_cookie, "Could not create pixmap")) {
exit(EXIT_FAILURE);
}
}
}
}
/*
* Render the bars, with buttons and statusline
*
*/
void draw_bars() {
DLOG("Drawing Bars...\n");
int i = 0;
refresh_statusline();
i3_output *outputs_walk;
SLIST_FOREACH(outputs_walk, outputs, slist) {
if (!outputs_walk->active) {
DLOG("Output %s inactive, skipping...\n", outputs_walk->name);
continue;
}
if (outputs_walk->bar == XCB_NONE) {
/* Oh shit, an active output without an own bar. Create it now! */
reconfig_windows();
}
/* First things first: clear the backbuffer */
uint32_t color = colors.bar_bg;
xcb_change_gc(xcb_connection,
outputs_walk->bargc,
XCB_GC_FOREGROUND,
&color);
xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font_height + 6 };
xcb_poly_fill_rectangle(xcb_connection,
outputs_walk->buffer,
outputs_walk->bargc,
1,
&rect);
if (statusline != NULL) {
DLOG("Printing statusline!\n");
/* Luckily we already prepared a seperate pixmap containing the rendered
* statusline, we just have to copy the relevant parts to the relevant
* position */
xcb_copy_area(xcb_connection,
statusline_pm,
outputs_walk->buffer,
outputs_walk->bargc,
MAX(0, (int16_t)(statusline_width - outputs_walk->rect.w + 4)), 0,
MAX(0, (int16_t)(outputs_walk->rect.w - statusline_width - 4)), 3,
MIN(outputs_walk->rect.w - 4, statusline_width), font_height);
}
if (config.disable_ws) {
continue;
}
i3_ws *ws_walk;
TAILQ_FOREACH(ws_walk, outputs_walk->workspaces, tailq) {
DLOG("Drawing Button for WS %s at x = %d\n", ws_walk->name, i);
uint32_t fg_color = colors.inactive_ws_fg;
uint32_t bg_color = colors.inactive_ws_bg;
if (ws_walk->visible) {
if (!ws_walk->focused) {
fg_color = colors.active_ws_fg;
bg_color = colors.active_ws_bg;
} else {
fg_color = colors.focus_ws_fg;
bg_color = colors.focus_ws_bg;
}
}
if (ws_walk->urgent) {
DLOG("WS %s is urgent!\n", ws_walk->name);
fg_color = colors.urgent_ws_fg;
bg_color = colors.urgent_ws_bg;
/* The urgent-hint should get noticed, so we unhide the bars shortly */
unhide_bars();
}
uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND;
uint32_t vals[] = { bg_color, bg_color };
xcb_change_gc(xcb_connection,
outputs_walk->bargc,
mask,
vals);
xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font_height + 4 };
xcb_poly_fill_rectangle(xcb_connection,
outputs_walk->buffer,
outputs_walk->bargc,
1,
&rect);
xcb_change_gc(xcb_connection,
outputs_walk->bargc,
XCB_GC_FOREGROUND,
&fg_color);
xcb_image_text_16(xcb_connection,
ws_walk->name_glyphs,
outputs_walk->buffer,
outputs_walk->bargc,
i + 5, font_info->font_ascent + 2,
ws_walk->ucs2_name);
i += 10 + ws_walk->name_width;
}
i = 0;
}
redraw_bars();
}
/*
* Redraw the bars, i.e. simply copy the buffer to the barwindow
*
*/
void redraw_bars() {
i3_output *outputs_walk;
SLIST_FOREACH(outputs_walk, outputs, slist) {
if (!outputs_walk->active) {
continue;
}
xcb_copy_area(xcb_connection,
outputs_walk->buffer,
outputs_walk->bar,
outputs_walk->bargc,
0, 0,
0, 0,
outputs_walk->rect.w,
outputs_walk->rect.h);
xcb_flush(xcb_connection);
}
}
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