525 lines
24 KiB
C
525 lines
24 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009-2010 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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* src/manage.c: Contains all functions for initially managing new windows
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* (or existing ones on restart).
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <xcb/xcb.h>
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#include <xcb/xcb_icccm.h>
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#include "xcb.h"
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#include "data.h"
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#include "util.h"
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#include "i3.h"
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#include "table.h"
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#include "config.h"
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#include "handlers.h"
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#include "layout.h"
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#include "manage.h"
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#include "floating.h"
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#include "client.h"
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#include "workspace.h"
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#include "log.h"
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#include "ewmh.h"
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/*
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* Go through all existing windows (if the window manager is restarted) and manage them
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*
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*/
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void manage_existing_windows(xcb_connection_t *conn, xcb_window_t root) {
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xcb_query_tree_reply_t *reply;
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int i, len;
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xcb_window_t *children;
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xcb_get_window_attributes_cookie_t *cookies;
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/* Get the tree of windows whose parent is the root window (= all) */
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if ((reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, root), 0)) == NULL)
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return;
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len = xcb_query_tree_children_length(reply);
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cookies = smalloc(len * sizeof(*cookies));
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/* Request the window attributes for every window */
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children = xcb_query_tree_children(reply);
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for (i = 0; i < len; ++i)
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cookies[i] = xcb_get_window_attributes(conn, children[i]);
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/* Call manage_window with the attributes for every window */
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for (i = 0; i < len; ++i)
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manage_window(conn, children[i], cookies[i], true);
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free(reply);
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free(cookies);
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}
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/*
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* Restores the geometry of each window by reparenting it to the root window
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* at the position of its frame.
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*
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* This is to be called *only* before exiting/restarting i3 because of evil
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* side-effects which are to be expected when continuing to run i3.
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*
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*/
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void restore_geometry(xcb_connection_t *conn) {
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Workspace *ws;
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Client *client;
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DLOG("Restoring geometry\n");
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TAILQ_FOREACH(ws, workspaces, workspaces)
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SLIST_FOREACH(client, &(ws->focus_stack), focus_clients)
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xcb_reparent_window(conn, client->child, root,
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client->rect.x, client->rect.y);
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/* Make sure our changes reach the X server, we restart/exit now */
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xcb_flush(conn);
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}
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/*
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* Do some sanity checks and then reparent the window.
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*
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*/
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void manage_window(xcb_connection_t *conn,
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xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
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bool needs_to_be_mapped) {
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xcb_drawable_t d = { window };
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xcb_get_geometry_cookie_t geomc;
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xcb_get_geometry_reply_t *geom;
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xcb_get_window_attributes_reply_t *attr = 0;
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geomc = xcb_get_geometry(conn, d);
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/* Check if the window is mapped (it could be not mapped when intializing and
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calling manage_window() for every window) */
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if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
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ELOG("Could not get attributes\n");
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return;
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}
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if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE)
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goto out;
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/* Don’t manage clients with the override_redirect flag */
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if (attr->override_redirect)
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goto out;
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/* Check if the window is already managed */
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if (table_get(&by_child, window))
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goto out;
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/* Get the initial geometry (position, size, …) */
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if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL)
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goto out;
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/* Reparent the window and add it to our list of managed windows */
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reparent_window(conn, window, attr->visual, geom->root, geom->depth,
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geom->x, geom->y, geom->width, geom->height,
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geom->border_width);
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/* Generate callback events for every property we watch */
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property_notify(XCB_PROPERTY_NEW_VALUE, window, A_WM_CLASS);
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property_notify(XCB_PROPERTY_NEW_VALUE, window, A_WM_NAME);
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property_notify(XCB_PROPERTY_NEW_VALUE, window, A_WM_NORMAL_HINTS);
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property_notify(XCB_PROPERTY_NEW_VALUE, window, A_WM_HINTS);
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property_notify(XCB_PROPERTY_NEW_VALUE, window, A_WM_TRANSIENT_FOR);
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property_notify(XCB_PROPERTY_NEW_VALUE, window, A_WM_CLIENT_LEADER);
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property_notify(XCB_PROPERTY_NEW_VALUE, window, A__NET_WM_NAME);
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free(geom);
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out:
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free(attr);
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return;
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}
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/*
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* reparent_window() gets called when a new window was opened and becomes a child of the root
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* window, or it gets called by us when we manage the already existing windows at startup.
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*
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* Essentially, this is the point where we take over control.
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*
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*/
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void reparent_window(xcb_connection_t *conn, xcb_window_t child,
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xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
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int16_t x, int16_t y, uint16_t width, uint16_t height,
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uint32_t border_width) {
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xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
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utf8_title_cookie, title_cookie,
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class_cookie, leader_cookie;
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uint32_t mask = 0;
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uint32_t values[3];
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uint16_t original_height = height;
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bool map_frame = true;
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/* We are interested in property changes */
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mask = XCB_CW_EVENT_MASK;
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values[0] = CHILD_EVENT_MASK;
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xcb_change_window_attributes(conn, child, mask, values);
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/* Place requests for properties ASAP */
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wm_type_cookie = xcb_get_any_property_unchecked(conn, false, child, A__NET_WM_WINDOW_TYPE, UINT32_MAX);
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strut_cookie = xcb_get_any_property_unchecked(conn, false, child, A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
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state_cookie = xcb_get_any_property_unchecked(conn, false, child, A__NET_WM_STATE, UINT32_MAX);
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utf8_title_cookie = xcb_get_any_property_unchecked(conn, false, child, A__NET_WM_NAME, 128);
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leader_cookie = xcb_get_any_property_unchecked(conn, false, child, A_WM_CLIENT_LEADER, UINT32_MAX);
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title_cookie = xcb_get_any_property_unchecked(conn, false, child, A_WM_NAME, 128);
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class_cookie = xcb_get_any_property_unchecked(conn, false, child, A_WM_CLASS, 128);
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Client *new = table_get(&by_child, child);
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/* Events for already managed windows should already be filtered in manage_window() */
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assert(new == NULL);
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LOG("Managing window 0x%08x\n", child);
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DLOG("x = %d, y = %d, width = %d, height = %d\n", x, y, width, height);
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new = scalloc(sizeof(Client));
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new->force_reconfigure = true;
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/* Update the data structures */
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Client *old_focused = CUR_CELL->currently_focused;
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new->container = CUR_CELL;
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new->workspace = new->container->workspace;
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/* Minimum useful size for managed windows is 75x50 (primarily affects floating) */
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width = max(width, 75);
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height = max(height, 50);
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new->frame = xcb_generate_id(conn);
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new->child = child;
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new->rect.width = width;
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new->rect.height = height;
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new->width_increment = 1;
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new->height_increment = 1;
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new->border_width = border_width;
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/* Pre-initialize the values for floating */
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new->floating_rect.x = -1;
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new->floating_rect.width = width;
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new->floating_rect.height = height;
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if (config.default_border != NULL)
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client_init_border(conn, new, config.default_border[1]);
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mask = 0;
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/* Don’t generate events for our new window, it should *not* be managed */
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mask |= XCB_CW_OVERRIDE_REDIRECT;
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values[0] = 1;
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/* We want to know when… */
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mask |= XCB_CW_EVENT_MASK;
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values[1] = FRAME_EVENT_MASK;
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i3Font *font = load_font(conn, config.font);
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width = min(width, c_ws->rect.x + c_ws->rect.width);
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height = min(height, c_ws->rect.y + c_ws->rect.height);
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Rect framerect = {x, y,
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width + 2 + 2, /* 2 px border at each side */
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height + 2 + 2 + font->height}; /* 2 px border plus font’s height */
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/* Yo dawg, I heard you like windows, so I create a window around your window… */
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new->frame = create_window(conn, framerect, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_CURSOR_LEFT_PTR, false, mask, values);
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/* Put the client inside the save set. Upon termination (whether killed or normal exit
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does not matter) of the window manager, these clients will be correctly reparented
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to their most closest living ancestor (= cleanup) */
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xcb_change_save_set(conn, XCB_SET_MODE_INSERT, child);
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/* Generate a graphics context for the titlebar */
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new->titlegc = xcb_generate_id(conn);
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xcb_create_gc(conn, new->titlegc, new->frame, 0, 0);
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/* Moves the original window into the new frame we've created for it */
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new->awaiting_useless_unmap = true;
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xcb_void_cookie_t cookie = xcb_reparent_window_checked(conn, child, new->frame, 0, font->height);
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if (xcb_request_check(conn, cookie) != NULL) {
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DLOG("Could not reparent the window, aborting\n");
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xcb_destroy_window(conn, new->frame);
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free(new);
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return;
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}
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/* Put our data structure (Client) into the table */
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table_put(&by_parent, new->frame, new);
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table_put(&by_child, child, new);
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/* We need to grab the mouse buttons for click to focus */
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xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
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XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
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1 /* left mouse button */,
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XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
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xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
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XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
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3 /* right mouse button */,
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XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
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/* Get _NET_WM_WINDOW_TYPE (to see if it’s a dock) */
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xcb_atom_t *atom;
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xcb_get_property_reply_t *preply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
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if (preply != NULL && preply->value_len > 0 && (atom = xcb_get_property_value(preply))) {
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for (int i = 0; i < xcb_get_property_value_length(preply); i++)
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if (atom[i] == A__NET_WM_WINDOW_TYPE_DOCK) {
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DLOG("Window is a dock.\n");
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Output *t_out = get_output_containing(x, y);
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if (t_out == NULL)
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t_out = c_ws->output;
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if (t_out != c_ws->output) {
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DLOG("Dock client requested to be on output %s by geometry (%d, %d)\n",
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t_out->name, x, y);
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new->workspace = t_out->current_workspace;
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}
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new->dock = true;
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new->borderless = true;
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new->titlebar_position = TITLEBAR_OFF;
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new->force_reconfigure = true;
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new->container = NULL;
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SLIST_INSERT_HEAD(&(t_out->dock_clients), new, dock_clients);
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/* If it’s a dock we can’t make it float, so we break */
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new->floating = FLOATING_AUTO_OFF;
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break;
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} else if (atom[i] == A__NET_WM_WINDOW_TYPE_DIALOG ||
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atom[i] == A__NET_WM_WINDOW_TYPE_UTILITY ||
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atom[i] == A__NET_WM_WINDOW_TYPE_TOOLBAR ||
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atom[i] == A__NET_WM_WINDOW_TYPE_SPLASH) {
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/* Set the dialog window to automatically floating, will be used below */
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new->floating = FLOATING_AUTO_ON;
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DLOG("dialog/utility/toolbar/splash window, automatically floating\n");
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}
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}
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/* All clients which have a leader should be floating */
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if (!new->dock && !client_is_floating(new) && new->leader != 0) {
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DLOG("Client has WM_CLIENT_LEADER hint set, setting floating\n");
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new->floating = FLOATING_AUTO_ON;
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}
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if (new->workspace->auto_float) {
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new->floating = FLOATING_AUTO_ON;
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DLOG("workspace is in autofloat mode, setting floating\n");
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}
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if (new->dock) {
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/* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
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uint32_t *strut;
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preply = xcb_get_property_reply(conn, strut_cookie, NULL);
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if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
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/* We only use a subset of the provided values, namely the reserved space at the top/bottom
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of the screen. This is because the only possibility for bars is at to be at the top/bottom
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with maximum horizontal size.
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TODO: bars at the top */
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new->desired_height = strut[3];
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if (new->desired_height == 0) {
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DLOG("Client wanted to be 0 pixels high, using the window's height (%d)\n", original_height);
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new->desired_height = original_height;
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}
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DLOG("the client wants to be %d pixels high\n", new->desired_height);
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} else {
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DLOG("The client didn't specify space to reserve at the screen edge, using its height (%d)\n", original_height);
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new->desired_height = original_height;
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}
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} else {
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/* If it’s not a dock, we can check on which workspace we should put it. */
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/* Firstly, we need to get the window’s class / title. We asked for the properties at the
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* top of this function, get them now and pass them to our callback function for window class / title
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* changes. It is important that the client was already inserted into the by_child table,
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* because the callbacks won’t work otherwise. */
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preply = xcb_get_property_reply(conn, utf8_title_cookie, NULL);
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handle_windowname_change(NULL, conn, 0, new->child, A__NET_WM_NAME, preply);
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preply = xcb_get_property_reply(conn, title_cookie, NULL);
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handle_windowname_change_legacy(NULL, conn, 0, new->child, A_WM_NAME, preply);
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preply = xcb_get_property_reply(conn, class_cookie, NULL);
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handle_windowclass_change(NULL, conn, 0, new->child, A_WM_CLASS, preply);
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preply = xcb_get_property_reply(conn, leader_cookie, NULL);
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handle_clientleader_change(NULL, conn, 0, new->child, A_WM_CLIENT_LEADER, preply);
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/* if WM_CLIENT_LEADER is set, we put the new window on the
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* same window as its leader. This might be overwritten by
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* assignments afterwards. */
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if (new->leader != XCB_NONE) {
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DLOG("client->leader is set (to 0x%08x)\n", new->leader);
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Client *parent = table_get(&by_child, new->leader);
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if (parent != NULL && parent->container != NULL) {
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Workspace *t_ws = parent->workspace;
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new->container = t_ws->table[parent->container->col][parent->container->row];
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new->workspace = t_ws;
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old_focused = new->container->currently_focused;
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map_frame = workspace_is_visible(t_ws);
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new->urgent = true;
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/* This is a little tricky: we cannot use
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* workspace_update_urgent_flag() because the
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* new window was not yet inserted into the
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* focus stack on t_ws. */
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t_ws->urgent = true;
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} else {
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DLOG("parent is not usable\n");
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}
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}
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struct Assignment *assign;
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TAILQ_FOREACH(assign, &assignments, assignments) {
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if (get_matching_client(conn, assign->windowclass_title, new) == NULL)
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continue;
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if (assign->floating == ASSIGN_FLOATING_ONLY ||
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assign->floating == ASSIGN_FLOATING) {
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new->floating = FLOATING_AUTO_ON;
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LOG("Assignment matches, putting client into floating mode\n");
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if (assign->floating == ASSIGN_FLOATING_ONLY)
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break;
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}
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LOG("Assignment \"%s\" matches, so putting it on workspace %d\n",
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assign->windowclass_title, assign->workspace);
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if (c_ws->output->current_workspace->num == (assign->workspace-1)) {
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DLOG("We are already there, no need to do anything\n");
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break;
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}
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DLOG("Changing container/workspace and unmapping the client\n");
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Workspace *t_ws = workspace_get(assign->workspace-1);
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workspace_initialize(t_ws, c_ws->output, false);
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new->container = t_ws->table[t_ws->current_col][t_ws->current_row];
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new->workspace = t_ws;
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old_focused = new->container->currently_focused;
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map_frame = workspace_is_visible(t_ws);
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break;
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}
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}
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if (new->workspace->fullscreen_client != NULL) {
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DLOG("Setting below fullscreen window\n");
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/* If we are in fullscreen, we should place the window below
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* the fullscreen window to not be annoying */
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uint32_t values[] = {
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new->workspace->fullscreen_client->frame,
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XCB_STACK_MODE_BELOW
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};
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xcb_configure_window(conn, new->frame,
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XCB_CONFIG_WINDOW_SIBLING |
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XCB_CONFIG_WINDOW_STACK_MODE, values);
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}
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/* Insert into the currently active container, if it’s not a dock window */
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if (!new->dock && !client_is_floating(new)) {
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/* Insert after the old active client, if existing. If it does not exist, the
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container is empty and it does not matter, where we insert it */
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if (old_focused != NULL && !old_focused->dock)
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CIRCLEQ_INSERT_AFTER(&(new->container->clients), old_focused, new, clients);
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else CIRCLEQ_INSERT_TAIL(&(new->container->clients), new, clients);
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if (new->container->workspace->fullscreen_client != NULL)
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SLIST_INSERT_AFTER(new->container->workspace->fullscreen_client, new, focus_clients);
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else SLIST_INSERT_HEAD(&(new->container->workspace->focus_stack), new, focus_clients);
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client_set_below_floating(conn, new);
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}
|
||
|
||
if (client_is_floating(new)) {
|
||
SLIST_INSERT_HEAD(&(new->workspace->focus_stack), new, focus_clients);
|
||
|
||
/* Add the client to the list of floating clients for its workspace */
|
||
TAILQ_INSERT_TAIL(&(new->workspace->floating_clients), new, floating_clients);
|
||
|
||
new->container = NULL;
|
||
|
||
new->rect.width = new->floating_rect.width + 2 + 2;
|
||
new->rect.height = new->floating_rect.height + (font->height + 2 + 2) + 2;
|
||
|
||
/* Some clients (like GIMP’s color picker window) get mapped
|
||
* to (0, 0), so we push them to a reasonable position
|
||
* (centered over their leader) */
|
||
if (new->leader != 0 && x == 0 && y == 0) {
|
||
DLOG("Floating client wants to (0x0), moving it over its leader instead\n");
|
||
Client *leader = table_get(&by_child, new->leader);
|
||
if (leader == NULL) {
|
||
DLOG("leader is NULL, centering it over current workspace\n");
|
||
|
||
x = c_ws->rect.x + (c_ws->rect.width / 2) - (new->rect.width / 2);
|
||
y = c_ws->rect.y + (c_ws->rect.height / 2) - (new->rect.height / 2);
|
||
} else {
|
||
x = leader->rect.x + (leader->rect.width / 2) - (new->rect.width / 2);
|
||
y = leader->rect.y + (leader->rect.height / 2) - (new->rect.height / 2);
|
||
}
|
||
}
|
||
new->floating_rect.x = new->rect.x = x;
|
||
new->floating_rect.y = new->rect.y = y;
|
||
DLOG("copying floating_rect from tiling (%d, %d) size (%d, %d)\n",
|
||
new->floating_rect.x, new->floating_rect.y,
|
||
new->floating_rect.width, new->floating_rect.height);
|
||
DLOG("outer rect (%d, %d) size (%d, %d)\n",
|
||
new->rect.x, new->rect.y, new->rect.width, new->rect.height);
|
||
|
||
/* Make sure it is on top of the other windows */
|
||
xcb_raise_window(conn, new->frame);
|
||
reposition_client(conn, new);
|
||
resize_client(conn, new);
|
||
/* redecorate_window flushes */
|
||
redecorate_window(conn, new);
|
||
}
|
||
|
||
new->needs_take_focus = client_supports_protocol(conn, new, A_WM_TAKE_FOCUS);
|
||
new->initialized = true;
|
||
|
||
/* Check if the window already got the fullscreen hint set */
|
||
xcb_atom_t *state;
|
||
if ((preply = xcb_get_property_reply(conn, state_cookie, NULL)) != NULL &&
|
||
(state = xcb_get_property_value(preply)) != NULL)
|
||
/* Check all set _NET_WM_STATEs */
|
||
for (int i = 0; i < xcb_get_property_value_length(preply); i++) {
|
||
if (state[i] != A__NET_WM_STATE_FULLSCREEN)
|
||
continue;
|
||
/* If the window got the fullscreen state, we just toggle fullscreen
|
||
and don’t event bother to redraw the layout – that would not change
|
||
anything anyways */
|
||
client_toggle_fullscreen(conn, new);
|
||
goto map;
|
||
}
|
||
|
||
render_layout(conn);
|
||
|
||
map:
|
||
/* Map the window first to avoid flickering */
|
||
xcb_map_window(conn, child);
|
||
if (map_frame)
|
||
client_map(conn, new);
|
||
|
||
if ((CUR_CELL->workspace->fullscreen_client == NULL || new->fullscreen) && !new->dock) {
|
||
/* Focus the new window if we’re not in fullscreen mode and if it is not a dock window */
|
||
if ((new->workspace->fullscreen_client == NULL) || new->fullscreen) {
|
||
if (!client_is_floating(new)) {
|
||
new->container->currently_focused = new;
|
||
if (map_frame)
|
||
render_container(conn, new->container);
|
||
}
|
||
if (new->container == CUR_CELL || client_is_floating(new)) {
|
||
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
|
||
if (new->needs_take_focus)
|
||
take_focus(conn, new);
|
||
ewmh_update_active_window(new->child);
|
||
}
|
||
}
|
||
}
|
||
|
||
xcb_flush(conn);
|
||
}
|