+#undef I3__FILE__
+#define I3__FILE__ "ewmh.c"
/*
- * vim:ts=8:expandtab
+ * vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
- * © 2009 Michael Stapelberg and contributors
- *
- * See file LICENSE for license information.
- *
- * ewmh.c: Functions to get/set certain EWMH properties easily.
+ * ewmh.c: Get/set certain EWMH properties easily.
*
*/
-#include <stdint.h>
-#include <string.h>
-#include <stdlib.h>
-
-#include "data.h"
-#include "table.h"
-#include "i3.h"
-#include "xcb.h"
-#include "util.h"
-#include "log.h"
+#include "all.h"
/*
* Updates _NET_CURRENT_DESKTOP with the current desktop number.
* and _NET_NUMBER_OF_DESKTOPS - 1.
*
*/
-void ewmh_update_current_desktop() {
- uint32_t current_desktop = c_ws->num;
- xcb_change_property(global_conn, XCB_PROP_MODE_REPLACE, root,
- atoms[_NET_CURRENT_DESKTOP], CARDINAL, 32, 1,
- ¤t_desktop);
+void ewmh_update_current_desktop(void) {
+ Con *focused_ws = con_get_workspace(focused);
+ Con *output;
+ uint32_t idx = 0;
+ /* We count to get the index of this workspace because named workspaces
+ * don’t have the ->num property */
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *ws;
+ TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
+ if (STARTS_WITH(ws->name, "__"))
+ continue;
+
+ if (ws == focused_ws) {
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
+ A__NET_CURRENT_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &idx);
+ return;
+ }
+ ++idx;
+ }
+ }
+}
+
+/*
+ * Updates _NET_NUMBER_OF_DESKTOPS which we interpret as the number of
+ * noninternal workspaces.
+ */
+void ewmh_update_number_of_desktops(void) {
+ Con *output;
+ uint32_t idx = 0;
+
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *ws;
+ TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
+ if (STARTS_WITH(ws->name, "__"))
+ continue;
+ ++idx;
+ }
+ }
+
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
+ A__NET_NUMBER_OF_DESKTOPS, XCB_ATOM_CARDINAL, 32, 1, &idx);
+}
+
+/*
+ * Updates _NET_DESKTOP_NAMES: "The names of all virtual desktops. This is a
+ * list of NULL-terminated strings in UTF-8 encoding"
+ */
+void ewmh_update_desktop_names(void) {
+ Con *output;
+ int msg_length = 0;
+
+ /* count the size of the property message to set */
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *ws;
+ TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
+ if (STARTS_WITH(ws->name, "__"))
+ continue;
+ msg_length += strlen(ws->name) + 1;
+ }
+ }
+
+ char desktop_names[msg_length];
+ int current_position = 0;
+
+ /* fill the buffer with the names of the i3 workspaces */
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *ws;
+ TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
+ if (STARTS_WITH(ws->name, "__"))
+ continue;
+
+ for (size_t i = 0; i < strlen(ws->name) + 1; i++) {
+ desktop_names[current_position++] = ws->name[i];
+ }
+ }
+ }
+
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
+ A__NET_DESKTOP_NAMES, A_UTF8_STRING, 8, msg_length, desktop_names);
+}
+
+/*
+ * Updates _NET_DESKTOP_VIEWPORT, which is an array of pairs of cardinals that
+ * define the top left corner of each desktop's viewport.
+ */
+void ewmh_update_desktop_viewport(void) {
+ Con *output;
+ int num_desktops = 0;
+ /* count number of desktops */
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *ws;
+ TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
+ if (STARTS_WITH(ws->name, "__"))
+ continue;
+
+ num_desktops++;
+ }
+ }
+
+ uint32_t viewports[num_desktops * 2];
+
+ int current_position = 0;
+ /* fill the viewport buffer */
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *ws;
+ TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
+ if (STARTS_WITH(ws->name, "__"))
+ continue;
+
+ viewports[current_position++] = output->rect.x;
+ viewports[current_position++] = output->rect.y;
+ }
+ }
+
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
+ A__NET_DESKTOP_VIEWPORT, XCB_ATOM_CARDINAL, 32, current_position, &viewports);
}
/*
*
*/
void ewmh_update_active_window(xcb_window_t window) {
- xcb_change_property(global_conn, XCB_PROP_MODE_REPLACE, root,
- atoms[_NET_ACTIVE_WINDOW], WINDOW, 32, 1, &window);
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
+ A__NET_ACTIVE_WINDOW, XCB_ATOM_WINDOW, 32, 1, &window);
}
/*
- * Updates the workarea for each desktop.
+ * i3 currently does not support _NET_WORKAREA, because it does not correspond
+ * to i3’s concept of workspaces. See also:
+ * http://bugs.i3wm.org/539
+ * http://bugs.i3wm.org/301
+ * http://bugs.i3wm.org/1038
+ *
+ * We need to actively delete this property because some display managers (e.g.
+ * LightDM) set it.
*
* EWMH: Contains a geometry for each desktop. These geometries specify an area
* that is completely contained within the viewport. Work area SHOULD be used by
* desktop applications to place desktop icons appropriately.
*
*/
-void ewmh_update_workarea() {
- Workspace *ws;
- int num_workspaces = 0, count = 0;
- Rect last_rect = {0, 0, 0, 0};
-
- /* Get the number of workspaces */
- TAILQ_FOREACH(ws, workspaces, workspaces) {
- /* Check if we need to initialize last_rect. The case that the
- * first workspace is all-zero may happen when the user
- * assigned workspace 2 for his first screen, for example. Thus
- * we need an initialized last_rect in the very first run of
- * the following loop. */
- if (last_rect.width == 0 && last_rect.height == 0 &&
- ws->rect.width != 0 && ws->rect.height != 0) {
- memcpy(&last_rect, &(ws->rect), sizeof(Rect));
- }
- num_workspaces++;
- }
+void ewmh_update_workarea(void) {
+ xcb_delete_property(conn, root, A__NET_WORKAREA);
+}
- DLOG("Got %d workspaces\n", num_workspaces);
- uint8_t *workarea = smalloc(sizeof(Rect) * num_workspaces);
- TAILQ_FOREACH(ws, workspaces, workspaces) {
- DLOG("storing %d: %dx%d with %d x %d\n", count, ws->rect.x,
- ws->rect.y, ws->rect.width, ws->rect.height);
- /* If a workspace is not yet initialized and thus its
- * dimensions are zero, we will instead put the dimensions
- * of the last workspace in the list. For example firefox
- * intersects all workspaces and does not cope so well with
- * an all-zero workspace. */
- if (ws->rect.width == 0 || ws->rect.height == 0) {
- DLOG("re-using last_rect (%dx%d, %d, %d)\n",
- last_rect.x, last_rect.y, last_rect.width,
- last_rect.height);
- memcpy(workarea + (sizeof(Rect) * count++), &last_rect, sizeof(Rect));
- continue;
- }
- memcpy(workarea + (sizeof(Rect) * count++), &(ws->rect), sizeof(Rect));
- memcpy(&last_rect, &(ws->rect), sizeof(Rect));
- }
- xcb_change_property(global_conn, XCB_PROP_MODE_REPLACE, root,
- atoms[_NET_WORKAREA], CARDINAL, 32,
- num_workspaces * (sizeof(Rect) / sizeof(uint32_t)),
- workarea);
- free(workarea);
- xcb_flush(global_conn);
+/*
+ * Updates the _NET_CLIENT_LIST hint.
+ *
+ */
+void ewmh_update_client_list(xcb_window_t *list, int num_windows) {
+ xcb_change_property(
+ conn,
+ XCB_PROP_MODE_REPLACE,
+ root,
+ A__NET_CLIENT_LIST,
+ XCB_ATOM_WINDOW,
+ 32,
+ num_windows,
+ list);
+}
+
+/*
+ * Updates the _NET_CLIENT_LIST_STACKING hint.
+ *
+ */
+void ewmh_update_client_list_stacking(xcb_window_t *stack, int num_windows) {
+ xcb_change_property(
+ conn,
+ XCB_PROP_MODE_REPLACE,
+ root,
+ A__NET_CLIENT_LIST_STACKING,
+ XCB_ATOM_WINDOW,
+ 32,
+ num_windows,
+ stack);
+}
+
+/*
+ * Set up the EWMH hints on the root window.
+ *
+ */
+void ewmh_setup_hints(void) {
+ xcb_atom_t supported_atoms[] = {
+#define xmacro(atom) A_##atom,
+#include "atoms.xmacro"
+#undef xmacro
+ };
+
+ /* Set up the window manager’s name. According to EWMH, section "Root Window
+ * Properties", to indicate that an EWMH-compliant window manager is
+ * present, a child window has to be created (and kept alive as long as the
+ * window manager is running) which has the _NET_SUPPORTING_WM_CHECK and
+ * _NET_WM_ATOMS. */
+ xcb_window_t child_window = xcb_generate_id(conn);
+ xcb_create_window(
+ conn,
+ XCB_COPY_FROM_PARENT, /* depth */
+ child_window, /* window id */
+ root, /* parent */
+ 0, 0, 1, 1, /* dimensions (x, y, w, h) */
+ 0, /* border */
+ XCB_WINDOW_CLASS_INPUT_ONLY, /* window class */
+ XCB_COPY_FROM_PARENT, /* visual */
+ 0,
+ NULL);
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, child_window, A__NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 32, 1, &child_window);
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, child_window, A__NET_WM_NAME, A_UTF8_STRING, 8, strlen("i3"), "i3");
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 33, 1, &child_window);
+
+ /* I’m not entirely sure if we need to keep _NET_WM_NAME on root. */
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_WM_NAME, A_UTF8_STRING, 8, strlen("i3"), "i3");
+
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_SUPPORTED, XCB_ATOM_ATOM, 32, 21, supported_atoms);
}
projects / i3 / i3 / blobdiff