480 lines
16 KiB
C
480 lines
16 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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* workspace.c: Functions for modifying workspaces
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <err.h>
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#include "util.h"
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#include "data.h"
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#include "i3.h"
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#include "config.h"
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#include "xcb.h"
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#include "table.h"
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#include "randr.h"
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#include "layout.h"
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#include "workspace.h"
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#include "client.h"
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#include "log.h"
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#include "ewmh.h"
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#include "ipc.h"
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/*
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* Returns a pointer to the workspace with the given number (starting at 0),
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* creating the workspace if necessary (by allocating the necessary amount of
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* memory and initializing the data structures correctly).
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*
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*/
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Workspace *workspace_get(int number) {
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Workspace *ws = NULL;
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TAILQ_FOREACH(ws, workspaces, workspaces)
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if (ws->num == number)
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return ws;
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/* If we are still there, we could not find the requested workspace. */
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int last_ws = TAILQ_LAST(workspaces, workspaces_head)->num;
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DLOG("We need to initialize that one, last ws = %d\n", last_ws);
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for (int c = last_ws; c < number; c++) {
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DLOG("Creating new ws\n");
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ws = scalloc(sizeof(Workspace));
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ws->num = c+1;
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TAILQ_INIT(&(ws->floating_clients));
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expand_table_cols(ws);
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expand_table_rows(ws);
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workspace_set_name(ws, NULL);
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TAILQ_INSERT_TAIL(workspaces, ws, workspaces);
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ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"create\"}");
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}
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DLOG("done\n");
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ewmh_update_workarea();
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return ws;
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}
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/*
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* Sets the name (or just its number) for the given workspace. This has to
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* be called for every workspace as the rendering function
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* (render_internal_bar) relies on workspace->name and workspace->name_len
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* being ready-to-use.
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*
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*/
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void workspace_set_name(Workspace *ws, const char *name) {
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char *label;
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int ret;
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if (name != NULL)
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ret = asprintf(&label, "%d: %s", ws->num + 1, name);
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else ret = asprintf(&label, "%d", ws->num + 1);
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if (ret == -1)
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errx(1, "asprintf() failed");
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FREE(ws->name);
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FREE(ws->utf8_name);
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ws->name = convert_utf8_to_ucs2(label, &(ws->name_len));
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if (config.font != NULL)
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ws->text_width = predict_text_width(global_conn, config.font, ws->name, ws->name_len);
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else ws->text_width = 0;
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ws->utf8_name = label;
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}
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/*
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* Returns true if the workspace is currently visible. Especially important for
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* multi-monitor environments, as they can have multiple currenlty active
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* workspaces.
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*
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*/
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bool workspace_is_visible(Workspace *ws) {
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return (ws->output != NULL && ws->output->current_workspace == ws);
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}
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/*
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* Switches to the given workspace
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*
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*/
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void workspace_show(xcb_connection_t *conn, int workspace) {
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bool need_warp = false;
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xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
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/* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */
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Workspace *t_ws = workspace_get(workspace-1);
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DLOG("show_workspace(%d)\n", workspace);
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/* Store current_row/current_col */
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c_ws->current_row = current_row;
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c_ws->current_col = current_col;
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/* Check if the workspace has not been used yet */
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workspace_initialize(t_ws, c_ws->output, false);
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if (c_ws->output != t_ws->output) {
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/* We need to switch to the other output first */
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DLOG("moving over to other output.\n");
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/* Store the old client */
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Client *old_client = CUR_CELL->currently_focused;
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c_ws = t_ws->output->current_workspace;
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current_col = c_ws->current_col;
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current_row = c_ws->current_row;
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if (CUR_CELL->currently_focused != NULL)
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need_warp = true;
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else {
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Rect *dims = &(c_ws->output->rect);
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xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
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dims->x + (dims->width / 2), dims->y + (dims->height / 2));
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}
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/* Re-decorate the old client, it’s not focused anymore */
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if ((old_client != NULL) && !old_client->dock)
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redecorate_window(conn, old_client);
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else xcb_flush(conn);
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/* We need to check if a global fullscreen-client is blocking
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* the t_ws and if necessary switch that to local fullscreen */
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Client* client = c_ws->fullscreen_client;
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if (client != NULL && client->workspace != c_ws) {
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if (c_ws->fullscreen_client->workspace != c_ws)
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c_ws->fullscreen_client = NULL;
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client_enter_fullscreen(conn, client, false);
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}
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}
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/* Check if we need to change something or if we’re already there */
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if (c_ws->output->current_workspace->num == (workspace-1)) {
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Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
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if (last_focused != SLIST_END(&(c_ws->focus_stack)))
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set_focus(conn, last_focused, true);
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if (need_warp) {
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client_warp_pointer_into(conn, last_focused);
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xcb_flush(conn);
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}
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ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}");
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return;
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}
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Workspace *old_workspace = c_ws;
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c_ws = t_ws->output->current_workspace = workspace_get(workspace-1);
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/* Unmap all clients of the old workspace */
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workspace_unmap_clients(conn, old_workspace);
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current_row = c_ws->current_row;
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current_col = c_ws->current_col;
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DLOG("new current row = %d, current col = %d\n", current_row, current_col);
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ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}");
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workspace_map_clients(conn, c_ws);
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/* POTENTIAL TO IMPROVE HERE: due to the call to _map_clients first and
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* render_layout afterwards, there is a short flickering on the source
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* workspace (assign ws 3 to output 0, ws 4 to output 1, create single
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* client on ws 4, move it to ws 3, switch to ws 3, you’ll see the
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* flickering). */
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/* Restore focus on the new workspace */
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Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
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if (last_focused != SLIST_END(&(c_ws->focus_stack)))
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set_focus(conn, last_focused, true);
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else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
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render_layout(conn);
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/* We can warp the pointer only after the window has been
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* reconfigured in render_layout, otherwise the pointer will
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* be warped to the old position, which will not work when we
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* moved it to another output. */
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if (last_focused != SLIST_END(&(c_ws->focus_stack)) && need_warp) {
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client_warp_pointer_into(conn, last_focused);
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xcb_flush(conn);
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}
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}
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/*
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* Assigns the given workspace to the given output by correctly updating its
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* state and reconfiguring all the clients on this workspace.
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*
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* This is called when initializing a output and when re-assigning it to a
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* different output which just got available (if you configured it to be on
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* output 1 and you just plugged in output 1).
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*
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*/
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void workspace_assign_to(Workspace *ws, Output *output, bool hide_it) {
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Client *client;
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bool empty = true;
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bool visible = workspace_is_visible(ws);
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ws->output = output;
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/* Copy the dimensions from the virtual output */
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memcpy(&(ws->rect), &(ws->output->rect), sizeof(Rect));
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ewmh_update_workarea();
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/* Force reconfiguration for each client on that workspace */
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SLIST_FOREACH(client, &(ws->focus_stack), focus_clients) {
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client->force_reconfigure = true;
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empty = false;
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}
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if (empty)
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return;
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/* Render the workspace to reconfigure the clients. However, they will be visible now, so… */
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render_workspace(global_conn, output, ws);
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/* …unless we want to see them at the moment, we should hide that workspace */
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if (visible && !hide_it)
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return;
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/* however, if this is the current workspace, we only need to adjust
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* the output’s current_workspace pointer (and must not unmap the
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* windows) */
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if (c_ws == ws) {
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DLOG("Need to adjust output->current_workspace...\n");
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output->current_workspace = c_ws;
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ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}");
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return;
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}
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workspace_unmap_clients(global_conn, ws);
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}
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/*
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* Initializes the given workspace if it is not already initialized. The given
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* screen is to be understood as a fallback, if the workspace itself either
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* was not assigned to a particular screen or cannot be placed there because
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* the screen is not attached at the moment.
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*
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*/
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void workspace_initialize(Workspace *ws, Output *output, bool recheck) {
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Output *old_output;
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if (ws->output != NULL && !recheck) {
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DLOG("Workspace already initialized\n");
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return;
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}
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old_output = ws->output;
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/* If this workspace has no preferred output or if the output it wants
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* to be on is not available at the moment, we initialize it with
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* the output which was given */
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if (ws->preferred_output == NULL ||
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(ws->output = get_output_by_name(ws->preferred_output)) == NULL)
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ws->output = output;
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DLOG("old_output = %p, ws->output = %p\n", old_output, ws->output);
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/* If the assignment did not change, we do not need to update anything */
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if (old_output != NULL && ws->output == old_output)
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return;
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workspace_assign_to(ws, ws->output, false);
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ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"init\"}");
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}
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/*
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* Gets the first unused workspace for the given screen, taking into account
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* the preferred_output setting of every workspace (workspace assignments).
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*
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*/
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Workspace *get_first_workspace_for_output(Output *output) {
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Workspace *result = NULL;
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Workspace *ws;
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TAILQ_FOREACH(ws, workspaces, workspaces) {
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if (ws->preferred_output == NULL ||
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get_output_by_name(ws->preferred_output) != output)
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continue;
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result = ws;
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break;
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}
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if (result == NULL) {
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/* No assignment found, returning first unused workspace */
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TAILQ_FOREACH(ws, workspaces, workspaces) {
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if (ws->output != NULL)
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continue;
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result = ws;
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break;
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}
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}
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if (result == NULL) {
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DLOG("No existing free workspace found to assign, creating a new one\n");
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int last_ws = 0;
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TAILQ_FOREACH(ws, workspaces, workspaces)
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last_ws = ws->num;
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result = workspace_get(last_ws + 1);
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}
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workspace_initialize(result, output, false);
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return result;
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}
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/*
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* Maps all clients (and stack windows) of the given workspace.
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*
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*/
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void workspace_map_clients(xcb_connection_t *conn, Workspace *ws) {
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Client *client;
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ignore_enter_notify_forall(conn, ws, true);
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/* Map all clients on the new workspace */
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FOR_TABLE(ws)
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CIRCLEQ_FOREACH(client, &(ws->table[cols][rows]->clients), clients)
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client_map(conn, client);
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/* Map all floating clients */
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if (!ws->floating_hidden)
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TAILQ_FOREACH(client, &(ws->floating_clients), floating_clients)
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client_map(conn, client);
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/* Map all stack windows, if any */
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struct Stack_Window *stack_win;
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SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
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if (stack_win->container->workspace == ws && stack_win->rect.height > 0)
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xcb_map_window(conn, stack_win->window);
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ignore_enter_notify_forall(conn, ws, false);
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}
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/*
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* Unmaps all clients (and stack windows) of the given workspace.
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*
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* This needs to be called separately when temporarily rendering
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* a workspace which is not the active workspace to force
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* reconfiguration of all clients, like in src/xinerama.c when
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* re-assigning a workspace to another screen.
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*
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*/
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void workspace_unmap_clients(xcb_connection_t *conn, Workspace *u_ws) {
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Client *client;
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struct Stack_Window *stack_win;
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/* Ignore notify events because they would cause focus to be changed */
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ignore_enter_notify_forall(conn, u_ws, true);
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/* Unmap all clients of the given workspace */
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int unmapped_clients = 0;
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FOR_TABLE(u_ws)
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CIRCLEQ_FOREACH(client, &(u_ws->table[cols][rows]->clients), clients) {
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DLOG("unmapping normal client %p / %p / %p\n", client, client->frame, client->child);
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client_unmap(conn, client);
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unmapped_clients++;
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}
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/* To find floating clients, we traverse the focus stack */
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SLIST_FOREACH(client, &(u_ws->focus_stack), focus_clients) {
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if (!client_is_floating(client))
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continue;
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DLOG("unmapping floating client %p / %p / %p\n", client, client->frame, client->child);
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client_unmap(conn, client);
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unmapped_clients++;
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}
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/* If we did not unmap any clients, the workspace is empty and we can destroy it, at least
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* if it is not the current workspace. */
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if (unmapped_clients == 0 && u_ws != c_ws) {
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/* Re-assign the workspace of all dock clients which use this workspace */
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Client *dock;
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DLOG("workspace %p is empty\n", u_ws);
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SLIST_FOREACH(dock, &(u_ws->output->dock_clients), dock_clients) {
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if (dock->workspace != u_ws)
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continue;
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DLOG("Re-assigning dock client to c_ws (%p)\n", c_ws);
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dock->workspace = c_ws;
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}
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u_ws->output = NULL;
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}
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/* Unmap the stack windows on the given workspace, if any */
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SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
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if (stack_win->container->workspace == u_ws)
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xcb_unmap_window(conn, stack_win->window);
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ignore_enter_notify_forall(conn, u_ws, false);
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}
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/*
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* Goes through all clients on the given workspace and updates the workspace’s
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* urgent flag accordingly.
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*
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*/
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void workspace_update_urgent_flag(Workspace *ws) {
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Client *current;
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bool old_flag = ws->urgent;
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bool urgent = false;
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SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
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if (!current->urgent)
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continue;
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urgent = true;
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break;
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}
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ws->urgent = urgent;
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if (old_flag != urgent)
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ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"urgent\"}");
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}
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/*
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* Returns the width of the workspace.
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*
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*/
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int workspace_width(Workspace *ws) {
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return ws->rect.width;
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}
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/*
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* Returns the effective height of the workspace (without the internal bar and
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* without dock clients).
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*
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*/
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int workspace_height(Workspace *ws) {
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int height = ws->rect.height;
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i3Font *font = load_font(global_conn, config.font);
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/* Reserve space for dock clients */
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Client *client;
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SLIST_FOREACH(client, &(ws->output->dock_clients), dock_clients)
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height -= client->desired_height;
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/* Space for the internal bar */
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if (!config.disable_workspace_bar)
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height -= (font->height + 6);
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return height;
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}
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