130 lines
4.4 KiB
C
130 lines
4.4 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009-2011 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* ewmh.c: Functions to get/set certain EWMH properties easily.
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*
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*/
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#include "all.h"
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/*
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* Updates _NET_CURRENT_DESKTOP with the current desktop number.
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*
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* EWMH: The index of the current desktop. This is always an integer between 0
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* and _NET_NUMBER_OF_DESKTOPS - 1.
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*
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*/
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void ewmh_update_current_desktop() {
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Con *focused_ws = con_get_workspace(focused);
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Con *output;
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uint32_t idx = 0;
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/* We count to get the index of this workspace because named workspaces
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* don’t have the ->num property */
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TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
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Con *ws;
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TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
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if (ws == focused_ws) {
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xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
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A__NET_CURRENT_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &idx);
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return;
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}
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++idx;
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}
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}
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}
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/*
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* Updates _NET_ACTIVE_WINDOW with the currently focused window.
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*
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* EWMH: The window ID of the currently active window or None if no window has
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* the focus.
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*
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*/
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void ewmh_update_active_window(xcb_window_t window) {
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xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
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A__NET_ACTIVE_WINDOW, XCB_ATOM_WINDOW, 32, 1, &window);
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}
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/*
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* Updates the workarea for each desktop.
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*
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* EWMH: Contains a geometry for each desktop. These geometries specify an area
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* that is completely contained within the viewport. Work area SHOULD be used by
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* desktop applications to place desktop icons appropriately.
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*
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*/
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void ewmh_update_workarea() {
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int num_workspaces = 0, count = 0;
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Rect last_rect = {0, 0, 0, 0};
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Con *output;
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TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
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Con *ws;
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TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
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/* Check if we need to initialize last_rect. The case that the
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* first workspace is all-zero may happen when the user
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* assigned workspace 2 for his first screen, for example. Thus
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* we need an initialized last_rect in the very first run of
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* the following loop. */
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if (last_rect.width == 0 && last_rect.height == 0 &&
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ws->rect.width != 0 && ws->rect.height != 0) {
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memcpy(&last_rect, &(ws->rect), sizeof(Rect));
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}
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num_workspaces++;
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}
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}
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DLOG("Got %d workspaces\n", num_workspaces);
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uint8_t *workarea = smalloc(sizeof(Rect) * num_workspaces);
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TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
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Con *ws;
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TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
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DLOG("storing %d: %dx%d with %d x %d\n", count, ws->rect.x,
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ws->rect.y, ws->rect.width, ws->rect.height);
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/* If a workspace is not yet initialized and thus its
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* dimensions are zero, we will instead put the dimensions
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* of the last workspace in the list. For example firefox
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* intersects all workspaces and does not cope so well with
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* an all-zero workspace. */
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if (ws->rect.width == 0 || ws->rect.height == 0) {
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DLOG("re-using last_rect (%dx%d, %d, %d)\n",
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last_rect.x, last_rect.y, last_rect.width,
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last_rect.height);
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memcpy(workarea + (sizeof(Rect) * count++), &last_rect, sizeof(Rect));
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continue;
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}
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memcpy(workarea + (sizeof(Rect) * count++), &(ws->rect), sizeof(Rect));
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memcpy(&last_rect, &(ws->rect), sizeof(Rect));
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}
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}
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xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
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A__NET_WORKAREA, XCB_ATOM_CARDINAL, 32,
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num_workspaces * (sizeof(Rect) / sizeof(uint32_t)),
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workarea);
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free(workarea);
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xcb_flush(conn);
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}
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/*
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* Updates the _NET_CLIENT_LIST_STACKING hint.
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*
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*/
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void ewmh_update_client_list_stacking(xcb_window_t *stack, int num_windows) {
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DLOG("Updating _NET_CLIENT_LIST_STACKING\n");
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xcb_change_property(
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conn,
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XCB_PROP_MODE_REPLACE,
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root,
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A__NET_CLIENT_LIST_STACKING,
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XCB_ATOM_WINDOW,
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32,
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num_windows,
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stack);
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}
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