gri3-wm/src/workspace.c

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/*
* vim:ts=8:expandtab
*
* i3 - an improved dynamic tiling window manager
*
* © 2009-2010 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
* workspace.c: Functions for modifying workspaces
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <err.h>
#include "util.h"
#include "data.h"
#include "i3.h"
#include "config.h"
#include "xcb.h"
#include "table.h"
#include "randr.h"
#include "layout.h"
#include "workspace.h"
#include "client.h"
#include "log.h"
#include "ewmh.h"
#include "ipc.h"
2009-09-27 15:20:47 +02:00
/*
* Returns a pointer to the workspace with the given number (starting at 0),
* creating the workspace if necessary (by allocating the necessary amount of
* memory and initializing the data structures correctly).
*
*/
Workspace *workspace_get(int number) {
Workspace *ws = NULL;
TAILQ_FOREACH(ws, workspaces, workspaces)
if (ws->num == number)
return ws;
/* If we are still there, we could not find the requested workspace. */
int last_ws = TAILQ_LAST(workspaces, workspaces_head)->num;
DLOG("We need to initialize that one, last ws = %d\n", last_ws);
for (int c = last_ws; c < number; c++) {
DLOG("Creating new ws\n");
ws = scalloc(sizeof(Workspace));
ws->num = c+1;
TAILQ_INIT(&(ws->floating_clients));
expand_table_cols(ws);
expand_table_rows(ws);
workspace_set_name(ws, NULL);
TAILQ_INSERT_TAIL(workspaces, ws, workspaces);
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"init\"}");
}
DLOG("done\n");
ewmh_update_workarea();
return ws;
}
/*
* Sets the name (or just its number) for the given workspace. This has to
* be called for every workspace as the rendering function
* (render_internal_bar) relies on workspace->name and workspace->name_len
* being ready-to-use.
*
*/
void workspace_set_name(Workspace *ws, const char *name) {
char *label;
int ret;
if (name != NULL)
ret = asprintf(&label, "%d: %s", ws->num + 1, name);
else ret = asprintf(&label, "%d", ws->num + 1);
if (ret == -1)
errx(1, "asprintf() failed");
FREE(ws->name);
FREE(ws->utf8_name);
ws->name = convert_utf8_to_ucs2(label, &(ws->name_len));
if (config.font != NULL)
ws->text_width = predict_text_width(global_conn, config.font, ws->name, ws->name_len);
else ws->text_width = 0;
ws->utf8_name = label;
}
/*
* Returns true if the workspace is currently visible. Especially important for
* multi-monitor environments, as they can have multiple currenlty active
* workspaces.
*
*/
bool workspace_is_visible(Workspace *ws) {
return (ws->output != NULL && ws->output->current_workspace == ws);
}
/*
* Switches to the given workspace
*
*/
void workspace_show(xcb_connection_t *conn, int workspace) {
bool need_warp = false;
xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
/* t_ws (to workspace) is just a convenience pointer to the workspace were switching to */
Workspace *t_ws = workspace_get(workspace-1);
DLOG("show_workspace(%d)\n", workspace);
/* Store current_row/current_col */
c_ws->current_row = current_row;
c_ws->current_col = current_col;
/* Check if the workspace has not been used yet */
workspace_initialize(t_ws, c_ws->output, false);
if (c_ws->output != t_ws->output) {
/* We need to switch to the other output first */
DLOG("moving over to other output.\n");
/* Store the old client */
Client *old_client = CUR_CELL->currently_focused;
c_ws = t_ws->output->current_workspace;
current_col = c_ws->current_col;
current_row = c_ws->current_row;
if (CUR_CELL->currently_focused != NULL)
need_warp = true;
else {
Rect *dims = &(c_ws->output->rect);
xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
dims->x + (dims->width / 2), dims->y + (dims->height / 2));
}
/* Re-decorate the old client, its not focused anymore */
if ((old_client != NULL) && !old_client->dock)
redecorate_window(conn, old_client);
else xcb_flush(conn);
/* We need to check if a global fullscreen-client is blocking
* the t_ws and if necessary switch that to local fullscreen */
Client* client = c_ws->fullscreen_client;
if (client != NULL && client->workspace != c_ws) {
if (c_ws->fullscreen_client->workspace != c_ws)
c_ws->fullscreen_client = NULL;
client_enter_fullscreen(conn, client, false);
}
}
/* Check if we need to change something or if were already there */
if (c_ws->output->current_workspace->num == (workspace-1)) {
Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
if (last_focused != SLIST_END(&(c_ws->focus_stack)))
set_focus(conn, last_focused, true);
if (need_warp) {
client_warp_pointer_into(conn, last_focused);
xcb_flush(conn);
}
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}");
return;
}
Workspace *old_workspace = c_ws;
c_ws = t_ws->output->current_workspace = workspace_get(workspace-1);
/* Unmap all clients of the old workspace */
workspace_unmap_clients(conn, old_workspace);
current_row = c_ws->current_row;
current_col = c_ws->current_col;
DLOG("new current row = %d, current col = %d\n", current_row, current_col);
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}");
workspace_map_clients(conn, c_ws);
/* POTENTIAL TO IMPROVE HERE: due to the call to _map_clients first and
* render_layout afterwards, there is a short flickering on the source
* workspace (assign ws 3 to output 0, ws 4 to output 1, create single
* client on ws 4, move it to ws 3, switch to ws 3, youll see the
* flickering). */
/* Restore focus on the new workspace */
Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
if (last_focused != SLIST_END(&(c_ws->focus_stack)))
set_focus(conn, last_focused, true);
else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
render_layout(conn);
/* We can warp the pointer only after the window has been
* reconfigured in render_layout, otherwise the pointer will
* be warped to the old position, which will not work when we
* moved it to another output. */
if (last_focused != SLIST_END(&(c_ws->focus_stack)) && need_warp) {
client_warp_pointer_into(conn, last_focused);
xcb_flush(conn);
}
}
/*
* Assigns the given workspace to the given output by correctly updating its
* state and reconfiguring all the clients on this workspace.
*
* This is called when initializing a output and when re-assigning it to a
* different output which just got available (if you configured it to be on
* output 1 and you just plugged in output 1).
*
*/
void workspace_assign_to(Workspace *ws, Output *output, bool hide_it) {
Client *client;
bool empty = true;
bool visible = workspace_is_visible(ws);
ws->output = output;
/* Copy the dimensions from the virtual output */
memcpy(&(ws->rect), &(ws->output->rect), sizeof(Rect));
ewmh_update_workarea();
/* Force reconfiguration for each client on that workspace */
SLIST_FOREACH(client, &(ws->focus_stack), focus_clients) {
client->force_reconfigure = true;
empty = false;
}
if (empty)
return;
/* Render the workspace to reconfigure the clients. However, they will be visible now, so… */
render_workspace(global_conn, output, ws);
/* …unless we want to see them at the moment, we should hide that workspace */
if (visible && !hide_it)
return;
/* however, if this is the current workspace, we only need to adjust
* the outputs current_workspace pointer (and must not unmap the
* windows) */
if (c_ws == ws) {
DLOG("Need to adjust output->current_workspace...\n");
output->current_workspace = c_ws;
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}");
return;
}
workspace_unmap_clients(global_conn, ws);
}
/*
* Initializes the given workspace if it is not already initialized. The given
* screen is to be understood as a fallback, if the workspace itself either
* was not assigned to a particular screen or cannot be placed there because
* the screen is not attached at the moment.
*
*/
void workspace_initialize(Workspace *ws, Output *output, bool recheck) {
Output *old_output;
if (ws->output != NULL && !recheck) {
DLOG("Workspace already initialized\n");
return;
}
old_output = ws->output;
/* If this workspace has no preferred output or if the output it wants
* to be on is not available at the moment, we initialize it with
* the output which was given */
if (ws->preferred_output == NULL ||
(ws->output = get_output_by_name(ws->preferred_output)) == NULL)
ws->output = output;
DLOG("old_output = %p, ws->output = %p\n", old_output, ws->output);
/* If the assignment did not change, we do not need to update anything */
if (old_output != NULL && ws->output == old_output)
return;
workspace_assign_to(ws, ws->output, false);
}
/*
* Gets the first unused workspace for the given screen, taking into account
* the preferred_output setting of every workspace (workspace assignments).
*
*/
Workspace *get_first_workspace_for_output(Output *output) {
Workspace *result = NULL;
Workspace *ws;
TAILQ_FOREACH(ws, workspaces, workspaces) {
if (ws->preferred_output == NULL ||
get_output_by_name(ws->preferred_output) != output)
continue;
result = ws;
break;
}
if (result == NULL) {
/* No assignment found, returning first unused workspace */
TAILQ_FOREACH(ws, workspaces, workspaces) {
if (ws->output != NULL)
continue;
result = ws;
break;
}
}
if (result == NULL) {
DLOG("No existing free workspace found to assign, creating a new one\n");
int last_ws = 0;
TAILQ_FOREACH(ws, workspaces, workspaces)
last_ws = ws->num;
result = workspace_get(last_ws + 1);
}
workspace_initialize(result, output, false);
return result;
}
/*
* Maps all clients (and stack windows) of the given workspace.
*
*/
void workspace_map_clients(xcb_connection_t *conn, Workspace *ws) {
Client *client;
ignore_enter_notify_forall(conn, ws, true);
/* Map all clients on the new workspace */
FOR_TABLE(ws)
CIRCLEQ_FOREACH(client, &(ws->table[cols][rows]->clients), clients)
client_map(conn, client);
/* Map all floating clients */
if (!ws->floating_hidden)
TAILQ_FOREACH(client, &(ws->floating_clients), floating_clients)
client_map(conn, client);
/* Map all stack windows, if any */
struct Stack_Window *stack_win;
SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
if (stack_win->container->workspace == ws && stack_win->rect.height > 0)
xcb_map_window(conn, stack_win->window);
ignore_enter_notify_forall(conn, ws, false);
}
/*
* Unmaps all clients (and stack windows) of the given workspace.
*
* This needs to be called separately when temporarily rendering
* a workspace which is not the active workspace to force
* reconfiguration of all clients, like in src/xinerama.c when
* re-assigning a workspace to another screen.
*
*/
void workspace_unmap_clients(xcb_connection_t *conn, Workspace *u_ws) {
Client *client;
struct Stack_Window *stack_win;
/* Ignore notify events because they would cause focus to be changed */
ignore_enter_notify_forall(conn, u_ws, true);
/* Unmap all clients of the given workspace */
int unmapped_clients = 0;
FOR_TABLE(u_ws)
CIRCLEQ_FOREACH(client, &(u_ws->table[cols][rows]->clients), clients) {
DLOG("unmapping normal client %p / %p / %p\n", client, client->frame, client->child);
client_unmap(conn, client);
unmapped_clients++;
}
/* To find floating clients, we traverse the focus stack */
SLIST_FOREACH(client, &(u_ws->focus_stack), focus_clients) {
if (!client_is_floating(client))
continue;
DLOG("unmapping floating client %p / %p / %p\n", client, client->frame, client->child);
client_unmap(conn, client);
unmapped_clients++;
}
/* If we did not unmap any clients, the workspace is empty and we can destroy it, at least
* if it is not the current workspace. */
if (unmapped_clients == 0 && u_ws != c_ws) {
/* Re-assign the workspace of all dock clients which use this workspace */
Client *dock;
DLOG("workspace %p is empty\n", u_ws);
SLIST_FOREACH(dock, &(u_ws->output->dock_clients), dock_clients) {
if (dock->workspace != u_ws)
continue;
DLOG("Re-assigning dock client to c_ws (%p)\n", c_ws);
dock->workspace = c_ws;
}
u_ws->output = NULL;
}
/* Unmap the stack windows on the given workspace, if any */
SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
if (stack_win->container->workspace == u_ws)
xcb_unmap_window(conn, stack_win->window);
ignore_enter_notify_forall(conn, u_ws, false);
}
/*
* Goes through all clients on the given workspace and updates the workspaces
* urgent flag accordingly.
*
*/
void workspace_update_urgent_flag(Workspace *ws) {
Client *current;
bool old_flag = ws->urgent;
bool urgent = false;
SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
if (!current->urgent)
continue;
urgent = true;
break;
}
ws->urgent = urgent;
if (old_flag != urgent)
ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"urgent\"}");
}
/*
* Returns the width of the workspace.
*
*/
int workspace_width(Workspace *ws) {
return ws->rect.width;
}
/*
* Returns the effective height of the workspace (without the internal bar and
* without dock clients).
*
*/
int workspace_height(Workspace *ws) {
int height = ws->rect.height;
i3Font *font = load_font(global_conn, config.font);
/* Reserve space for dock clients */
Client *client;
SLIST_FOREACH(client, &(ws->output->dock_clients), dock_clients)
height -= client->desired_height;
/* Space for the internal bar */
if (!config.disable_workspace_bar)
height -= (font->height + 6);
return height;
}