+/*
+ * 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 "xcb.h"
-#include "outputs.h"
-#include "workspaces.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 */
+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);
+ 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);
}
-void init_xcb() {
- /* FIXME: xcb_connect leaks Memory */
- xcb_connection = xcb_connect(NULL, NULL);
- if (xcb_connection_has_error(xcb_connection)) {
- printf("Cannot open display\n");
- exit(EXIT_FAILURE);
- }
- printf("Connected to xcb\n");
+/*
+ * 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];
- /* 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"
+ cont_child();
- xcb_screens = xcb_setup_roots_iterator(xcb_get_setup(xcb_connection)).data;
- xcb_root = xcb_screens->root;
+ 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);
- /* FIXME: Maybe we can push that further backwards */
- get_atoms();
+ 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() {
- xcb_disconnect(xcb_connection);
+ 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); \
- atoms[name] = reply->atom; \
- free(reply);
-
- #include "xcb_atoms.def"
- printf("Got Atoms\n");
-}
-
-void destroy_windows() {
- i3_output *walk = outputs;
- while(walk != NULL) {
- if (walk->bar == XCB_NONE) {
- continue;
- }
- xcb_destroy_window(xcb_connection, walk->bar);
- walk->bar = XCB_NONE;
- }
-}
-
-void create_windows() {
- uint32_t mask;
- uint32_t values[2];
-
- i3_output* walk = outputs;
- while (walk != NULL) {
- if (!walk->active) {
- walk = walk->next;
- continue;
- }
- printf("Creating Window for output %s\n", walk->name);
-
- walk->bar = xcb_generate_id(xcb_connection);
- mask = XCB_CW_BACK_PIXEL;
- values[0] = xcb_screens->black_pixel;
- xcb_create_window(xcb_connection,
- xcb_screens->root_depth,
- walk->bar,
- xcb_root,
- walk->rect.x, walk->rect.y,
- walk->rect.w, 20,
- 1,
- XCB_WINDOW_CLASS_INPUT_OUTPUT,
- xcb_screens->root_visual,
- mask,
- values);
-
- xcb_change_property(xcb_connection,
- XCB_PROP_MODE_REPLACE,
- walk->bar,
- atoms[_NET_WM_WINDOW_TYPE],
- atoms[ATOM],
- 32,
- 1,
- (unsigned char*) &atoms[_NET_WM_WINDOW_TYPE_DOCK]);
-
- walk->bargc = xcb_generate_id(xcb_connection);
- xcb_create_gc(xcb_connection,
- walk->bargc,
- walk->bar,
- 0,
- NULL);
-
- xcb_map_window(xcb_connection, walk->bar);
- walk = walk->next;
- }
- xcb_flush(xcb_connection);
-}
-
-void draw_buttons() {
- printf("Drawing Buttons...\n");
- i3_output *outputs_walk = outputs;
- int i = 0;
- xcb_font_t button_font = xcb_generate_id(xcb_connection);
- char *fontname = "-misc-fixed-medium-r-semicondensed--12-110-75-75-c-60-iso10646-1";
- xcb_open_font(xcb_connection,
- button_font,
- strlen(fontname),
- fontname);
- xcb_change_gc(xcb_connection,
- outputs_walk->bargc,
- XCB_GC_FONT,
- &button_font);
- while (outputs_walk != NULL) {
- if (!outputs_walk->active) {
- printf("Output %s inactive, skipping...\n", outputs_walk->name);
- outputs_walk = outputs_walk->next;
- continue;
- }
- if (outputs_walk->bar == XCB_NONE) {
- create_windows();
- }
- uint32_t color = get_colorpixel("000000");
- xcb_change_gc(xcb_connection,
- outputs_walk->bargc,
- XCB_GC_FOREGROUND,
- &color);
- xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, 20 };
- xcb_poly_fill_rectangle(xcb_connection,
- outputs_walk->bar,
- outputs_walk->bargc,
- 1,
- &rect);
- i3_ws *ws_walk = workspaces;
- while (ws_walk != NULL) {
- if (ws_walk->output != outputs_walk) {
- printf("WS %s on wrong output, skipping...\n", ws_walk->name);
- ws_walk = ws_walk->next;
- continue;
- }
- printf("Drawing Button for WS %s...\n", ws_walk->name);
- uint32_t color = get_colorpixel("240000");
- if (ws_walk->visible) {
- color = get_colorpixel("480000");
- }
- if (ws_walk->urgent) {
- color = get_colorpixel("002400");
- }
- xcb_change_gc(xcb_connection,
- outputs_walk->bargc,
- XCB_GC_FOREGROUND,
- &color);
- xcb_change_gc(xcb_connection,
- outputs_walk->bargc,
- XCB_GC_BACKGROUND,
- &color);
- xcb_rectangle_t rect = { i + 1, 1, 18, 18 };
- xcb_poly_fill_rectangle(xcb_connection,
- outputs_walk->bar,
- outputs_walk->bargc,
- 1,
- &rect);
- color = get_colorpixel("FFFFFF");
- xcb_change_gc(xcb_connection,
- outputs_walk->bargc,
- XCB_GC_FOREGROUND,
- &color);
- xcb_image_text_8(xcb_connection,
- strlen(ws_walk->name),
- outputs_walk->bar,
- outputs_walk->bargc,
- i + 3, 14,
- ws_walk->name);
- i += 20;
- ws_walk = ws_walk->next;
- }
- outputs_walk = outputs_walk->next;
- i = 0;
- }
- xcb_flush(xcb_connection);
+ 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);
+ }
}
projects / i3 / i3 / blobdiff