+#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 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 "all.h"
-#include "data.h"
-#include "table.h"
-#include "i3.h"
-#include "xcb.h"
+xcb_window_t ewmh_window;
/*
* 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);
+}
+
+/*
+ * Updates _NET_ACTIVE_WINDOW with the currently focused window.
+ *
+ * EWMH: The window ID of the currently active window or None if no window has
+ * the focus.
+ *
+ */
+void ewmh_update_active_window(xcb_window_t window) {
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
+ A__NET_ACTIVE_WINDOW, XCB_ATOM_WINDOW, 32, 1, &window);
+}
+
+/*
+ * Updates _NET_WM_VISIBLE_NAME.
+ *
+ */
+void ewmh_update_visible_name(xcb_window_t window, const char *name) {
+ if (name != NULL) {
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, window, A__NET_WM_VISIBLE_NAME, A_UTF8_STRING, 8, strlen(name), name);
+ } else {
+ xcb_delete_property(conn, window, A__NET_WM_VISIBLE_NAME);
+ }
+}
+
+/*
+ * 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(void) {
+ xcb_delete_property(conn, root, A__NET_WORKAREA);
+}
+
+/*
+ * 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 or remove _NET_WM_STATE_STICKY on the window.
+ *
+ */
+void ewmh_update_sticky(xcb_window_t window, bool sticky) {
+ if (sticky) {
+ DLOG("Setting _NET_WM_STATE_STICKY for window = %d.\n", window);
+ xcb_add_property_atom(conn, window, A__NET_WM_STATE, A__NET_WM_STATE_STICKY);
+ } else {
+ DLOG("Removing _NET_WM_STATE_STICKY for window = %d.\n", window);
+ xcb_remove_property_atom(conn, window, A__NET_WM_STATE, A__NET_WM_STATE_STICKY);
+ }
+}
+
+/*
+ * 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. */
+ ewmh_window = xcb_generate_id(conn);
+ /* We create the window and put it at (-1, -1) so that it is off-screen. */
+ xcb_create_window(
+ conn,
+ XCB_COPY_FROM_PARENT, /* depth */
+ ewmh_window, /* window id */
+ root, /* parent */
+ -1, -1, 1, 1, /* dimensions (x, y, w, h) */
+ 0, /* border */
+ XCB_WINDOW_CLASS_INPUT_ONLY, /* window class */
+ XCB_COPY_FROM_PARENT, /* visual */
+ XCB_CW_OVERRIDE_REDIRECT,
+ (uint32_t[]){1});
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, ewmh_window, A__NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 32, 1, &ewmh_window);
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, ewmh_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, 32, 1, &ewmh_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");
+
+ /* only send the first 31 atoms (last one is _NET_CLOSE_WINDOW) increment that number when adding supported atoms */
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_SUPPORTED, XCB_ATOM_ATOM, 32, /* number of atoms */ 32, supported_atoms);
+
+ /* We need to map this window to be able to set the input focus to it if no other window is available to be focused. */
+ xcb_map_window(conn, ewmh_window);
+ xcb_configure_window(conn, ewmh_window, XCB_CONFIG_WINDOW_STACK_MODE, (uint32_t[]){XCB_STACK_MODE_BELOW});
}
projects / i3 / i3 / blobdiff