* 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 also: LICENSE)
*
* ewmh.c: Get/set certain EWMH properties easily.
*
*/
#include "all.h"
+xcb_window_t ewmh_window;
+
/*
* Updates _NET_CURRENT_DESKTOP with the current desktop number.
*
*
*/
void ewmh_update_current_desktop(void) {
- Con *focused_ws = con_get_workspace(focused);
+ const uint32_t idx = ewmh_get_workspace_index(focused);
+ if (idx != NET_WM_DESKTOP_NONE) {
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_CURRENT_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &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;
- /* 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 (ws == focused_ws) {
- xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
- A__NET_CURRENT_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &idx);
- return;
- }
+ 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_ACTIVE_WINDOW with the currently focused window.
- *
- * EWMH: The window ID of the currently active window or None if no window has
- * the focus.
- *
+ * 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_active_window(xcb_window_t window) {
+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_ACTIVE_WINDOW, XCB_ATOM_WINDOW, 32, 1, &window);
+ A__NET_DESKTOP_NAMES, A_UTF8_STRING, 8, msg_length, desktop_names);
}
/*
- * Updates the workarea for each desktop.
- *
- * This function is not called at the moment due to:
- * http://bugs.i3wm.org/539
- * http://bugs.i3wm.org/301
- *
- * 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.
- *
+ * 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_workarea(void) {
- int num_workspaces = 0, count = 0;
- Rect last_rect = {0, 0, 0, 0};
+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) {
- /* 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++;
+ if (STARTS_WITH(ws->name, "__"))
+ continue;
+
+ num_desktops++;
}
}
- DLOG("Got %d workspaces\n", num_workspaces);
- uint8_t *workarea = smalloc(sizeof(Rect) * num_workspaces);
+ 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) {
- 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));
+ 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);
+}
+
+static void ewmh_update_wm_desktop_recursively(Con *con, const uint32_t desktop) {
+ Con *child;
+
+ /* Recursively call this to descend through the entire subtree. */
+ TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
+ ewmh_update_wm_desktop_recursively(child, desktop);
+ }
+
+ /* If con is a workspace, we also need to go through the floating windows on it. */
+ if (con->type == CT_WORKSPACE) {
+ TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
+ ewmh_update_wm_desktop_recursively(child, desktop);
+ }
+ }
+
+ if (!con_has_managed_window(con))
+ return;
+
+ uint32_t wm_desktop = desktop;
+ /* Sticky windows are only actually sticky when they are floating or inside
+ * a floating container. This is technically still slightly wrong, since
+ * sticky windows will only be on all workspaces on this output, but we
+ * ignore multi-monitor situations for this since the spec isn't too
+ * precise on this anyway. */
+ if (con_is_sticky(con) && con_is_floating(con)) {
+ wm_desktop = NET_WM_DESKTOP_ALL;
+ }
+
+ /* If the window is on the scratchpad we assign the sticky value to it
+ * since showing it works on any workspace. We cannot remove the property
+ * as per specification. */
+ Con *ws = con_get_workspace(con);
+ if (ws != NULL && con_is_internal(ws)) {
+ wm_desktop = NET_WM_DESKTOP_ALL;
+ }
+
+ /* If this is the cached value, we don't need to do anything. */
+ if (con->window->wm_desktop == wm_desktop)
+ return;
+ con->window->wm_desktop = wm_desktop;
+
+ const xcb_window_t window = con->window->id;
+ if (wm_desktop != NET_WM_DESKTOP_NONE) {
+ DLOG("Setting _NET_WM_DESKTOP = %d for window 0x%08x.\n", wm_desktop, window);
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, window, A__NET_WM_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &wm_desktop);
+ } else {
+ /* If we can't determine the workspace index, delete the property. We'd
+ * rather not set it than lie. */
+ ELOG("Failed to determine the proper EWMH desktop index for window 0x%08x, deleting _NET_WM_DESKTOP.\n", window);
+ xcb_delete_property(conn, window, A__NET_WM_DESKTOP);
+ }
+}
+
+/*
+ * Updates _NET_WM_DESKTOP for all windows.
+ * A request will only be made if the cached value differs from the calculated value.
+ *
+ */
+void ewmh_update_wm_desktop(void) {
+ uint32_t desktop = 0;
+
+ Con *output;
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *workspace;
+ TAILQ_FOREACH(workspace, &(output_get_content(output)->nodes_head), nodes) {
+ ewmh_update_wm_desktop_recursively(workspace, desktop);
+
+ if (!con_is_internal(workspace)) {
+ ++desktop;
}
- memcpy(workarea + (sizeof(Rect) * count++), &(ws->rect), sizeof(Rect));
- memcpy(&last_rect, &(ws->rect), sizeof(Rect));
}
}
+}
+
+/*
+ * 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_WORKAREA, XCB_ATOM_CARDINAL, 32,
- num_workspaces * (sizeof(Rect) / sizeof(uint32_t)),
- workarea);
- free(workarea);
- xcb_flush(conn);
+ 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:
+ * https://bugs.i3wm.org/539
+ * https://bugs.i3wm.org/301
+ * https://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);
}
/*
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 or remove _NEW_WM_STATE_FOCUSED on the window.
+ *
+ */
+void ewmh_update_focused(xcb_window_t window, bool is_focused) {
+ if (is_focused) {
+ DLOG("Setting _NET_WM_STATE_FOCUSED for window = %d.\n", window);
+ xcb_add_property_atom(conn, window, A__NET_WM_STATE, A__NET_WM_STATE_FOCUSED);
+ } else {
+ DLOG("Removing _NET_WM_STATE_FOCUSED for window = %d.\n", window);
+ xcb_remove_property_atom(conn, window, A__NET_WM_STATE, A__NET_WM_STATE_FOCUSED);
+ }
+}
+
/*
* 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"
+#define xmacro(atom) A_##atom,
+#include "atoms_NET_SUPPORTED.xmacro"
#undef xmacro
};
* 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);
+ 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 */
- child_window, /* window id */
- root, /* parent */
- 0, 0, 1, 1, /* dimensions (x, y, w, h) */
- 0, /* border */
+ 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 */
- 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, 32, 1, &child_window);
+ 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");
- xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_SUPPORTED, XCB_ATOM_ATOM, 32, 16, supported_atoms);
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A__NET_SUPPORTED, XCB_ATOM_ATOM, 32, /* number of atoms */ sizeof(supported_atoms) / sizeof(xcb_atom_t), 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});
+}
+
+/*
+ * Returns the workspace container as enumerated by the EWMH desktop model.
+ * Returns NULL if no workspace could be found for the index.
+ *
+ * This is the reverse of ewmh_get_workspace_index.
+ *
+ */
+Con *ewmh_get_workspace_by_index(uint32_t idx) {
+ if (idx == NET_WM_DESKTOP_NONE)
+ return NULL;
+
+ uint32_t current_index = 0;
+
+ Con *output;
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *workspace;
+ TAILQ_FOREACH(workspace, &(output_get_content(output)->nodes_head), nodes) {
+ if (con_is_internal(workspace))
+ continue;
+
+ if (current_index == idx)
+ return workspace;
+
+ ++current_index;
+ }
+ }
+
+ return NULL;
+}
+
+/*
+ * Returns the EWMH desktop index for the workspace the given container is on.
+ * Returns NET_WM_DESKTOP_NONE if the desktop index cannot be determined.
+ *
+ * This is the reverse of ewmh_get_workspace_by_index.
+ *
+ */
+uint32_t ewmh_get_workspace_index(Con *con) {
+ uint32_t index = 0;
+
+ Con *workspace = con_get_workspace(con);
+ Con *output;
+ TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+ Con *current;
+ TAILQ_FOREACH(current, &(output_get_content(output)->nodes_head), nodes) {
+ if (con_is_internal(current))
+ continue;
+
+ if (current == workspace)
+ return index;
+
+ ++index;
+ }
+ }
+
+ return NET_WM_DESKTOP_NONE;
}
projects / i3 / i3 / blobdiff