sway/sway/workspace.c
2017-03-10 23:41:24 -05:00

375 lines
11 KiB
C

#define _XOPEN_SOURCE 500
#include <stdlib.h>
#include <stdbool.h>
#include <limits.h>
#include <ctype.h>
#include <wlc/wlc.h>
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include "sway/ipc-server.h"
#include "sway/extensions.h"
#include "sway/workspace.h"
#include "sway/layout.h"
#include "sway/container.h"
#include "sway/handlers.h"
#include "sway/config.h"
#include "sway/focus.h"
#include "stringop.h"
#include "util.h"
#include "list.h"
#include "log.h"
#include "ipc.h"
char *prev_workspace_name = NULL;
struct workspace_by_number_data {
int len;
const char *cset;
const char *name;
};
static bool workspace_valid_on_output(const char *output_name, const char *ws_name) {
int i;
for (i = 0; i < config->workspace_outputs->length; ++i) {
struct workspace_output *wso = config->workspace_outputs->items[i];
if (strcasecmp(wso->workspace, ws_name) == 0) {
if (strcasecmp(wso->output, output_name) != 0) {
return false;
}
}
}
return true;
}
char *workspace_next_name(const char *output_name) {
sway_log(L_DEBUG, "Workspace: Generating new workspace name for output %s", output_name);
int i;
int l = 1;
// Scan all workspace bindings to find the next available workspace name,
// if none are found/available then default to a number
struct sway_mode *mode = config->current_mode;
int order = INT_MAX;
char *target = NULL;
for (i = 0; i < mode->bindings->length; ++i) {
struct sway_binding *binding = mode->bindings->items[i];
char *cmdlist = strdup(binding->command);
char *dup = cmdlist;
char *name = NULL;
// workspace n
char *cmd = argsep(&cmdlist, " ");
if (cmdlist) {
name = argsep(&cmdlist, " ,;");
}
if (strcmp("workspace", cmd) == 0 && name) {
sway_log(L_DEBUG, "Got valid workspace command for target: '%s'", name);
char *_target = strdup(name);
strip_quotes(_target);
while (isspace(*_target))
_target++;
// Make sure that the command references an actual workspace
// not a command about workspaces
if (strcmp(_target, "next") == 0 ||
strcmp(_target, "prev") == 0 ||
strcmp(_target, "next_on_output") == 0 ||
strcmp(_target, "prev_on_output") == 0 ||
strcmp(_target, "number") == 0 ||
strcmp(_target, "back_and_forth") == 0 ||
strcmp(_target, "current") == 0)
{
free(_target);
free(dup);
continue;
}
// Make sure that the workspace doesn't already exist
if (workspace_by_name(_target)) {
free(_target);
free(dup);
continue;
}
// make sure that the workspace can appear on the given
// output
if (!workspace_valid_on_output(output_name, _target)) {
free(_target);
free(dup);
continue;
}
if (binding->order < order) {
order = binding->order;
free(target);
target = _target;
sway_log(L_DEBUG, "Workspace: Found free name %s", _target);
}
}
free(dup);
}
if (target != NULL) {
return target;
}
// As a fall back, get the current number of active workspaces
// and return that + 1 for the next workspace's name
int ws_num = root_container.children->length;
if (ws_num >= 10) {
l = 2;
} else if (ws_num >= 100) {
l = 3;
}
char *name = malloc(l + 1);
if (!name) {
sway_log(L_ERROR, "Could not allocate workspace name");
return NULL;
}
sprintf(name, "%d", ws_num++);
return name;
}
swayc_t *workspace_create(const char* name) {
swayc_t *parent;
// Search for workspace<->output pair
int i, e = config->workspace_outputs->length;
for (i = 0; i < e; ++i) {
struct workspace_output *wso = config->workspace_outputs->items[i];
if (strcasecmp(wso->workspace, name) == 0)
{
// Find output to use if it exists
e = root_container.children->length;
for (i = 0; i < e; ++i) {
parent = root_container.children->items[i];
if (strcmp(parent->name, wso->output) == 0) {
return new_workspace(parent, name);
}
}
break;
}
}
// Otherwise create a new one
parent = get_focused_container(&root_container);
parent = swayc_parent_by_type(parent, C_OUTPUT);
return new_workspace(parent, name);
}
static bool _workspace_by_name(swayc_t *view, void *data) {
return (view->type == C_WORKSPACE) &&
(strcasecmp(view->name, (char *) data) == 0);
}
swayc_t *workspace_by_name(const char* name) {
if (strcmp(name, "prev") == 0) {
return workspace_prev();
}
else if (strcmp(name, "prev_on_output") == 0) {
return workspace_output_prev();
}
else if (strcmp(name, "next") == 0) {
return workspace_next();
}
else if (strcmp(name, "next_on_output") == 0) {
return workspace_output_next();
}
else if (strcmp(name, "current") == 0) {
return swayc_active_workspace();
}
else {
return swayc_by_test(&root_container, _workspace_by_name, (void *) name);
}
}
static bool _workspace_by_number(swayc_t *view, void *data) {
if (view->type != C_WORKSPACE) {
return false;
}
struct workspace_by_number_data *wbnd = data;
int a = strspn(view->name, wbnd->cset);
return a == wbnd->len && strncmp(view->name, wbnd->name, a) == 0;
}
swayc_t *workspace_by_number(const char* name) {
struct workspace_by_number_data wbnd = {0, "1234567890", name};
wbnd.len = strspn(name, wbnd.cset);
if (wbnd.len <= 0) {
return NULL;
}
return swayc_by_test(&root_container, _workspace_by_number, (void *) &wbnd);
}
/**
* Get the previous or next workspace on the specified output.
* Wraps around at the end and beginning.
* If next is false, the previous workspace is returned, otherwise the next one is returned.
*/
swayc_t *workspace_output_prev_next_impl(swayc_t *output, bool next) {
if (!sway_assert(output->type == C_OUTPUT, "Argument must be an output, is %d", output->type)) {
return NULL;
}
int i;
for (i = 0; i < output->children->length; i++) {
if (output->children->items[i] == output->focused) {
return output->children->items[wrap(i + (next ? 1 : -1), output->children->length)];
}
}
// Doesn't happen, at worst the for loop returns the previously active workspace
return NULL;
}
/**
* Get the previous or next workspace. If the first/last workspace on an output is active,
* proceed to the previous/next output's previous/next workspace.
* If next is false, the previous workspace is returned, otherwise the next one is returned.
*/
swayc_t *workspace_prev_next_impl(swayc_t *workspace, bool next) {
if (!sway_assert(workspace->type == C_WORKSPACE, "Argument must be a workspace, is %d", workspace->type)) {
return NULL;
}
swayc_t *current_output = workspace->parent;
int offset = next ? 1 : -1;
int start = next ? 0 : 1;
int end = next ? (current_output->children->length) - 1 : current_output->children->length;
int i;
for (i = start; i < end; i++) {
if (current_output->children->items[i] == workspace) {
return current_output->children->items[i + offset];
}
}
// Given workspace is the first/last on the output, jump to the previous/next output
int num_outputs = root_container.children->length;
for (i = 0; i < num_outputs; i++) {
if (root_container.children->items[i] == current_output) {
swayc_t *next_output = root_container.children->items[wrap(i + offset, num_outputs)];
return workspace_output_prev_next_impl(next_output, next);
}
}
// Doesn't happen, at worst the for loop returns the previously active workspace on the active output
return NULL;
}
swayc_t *workspace_output_next() {
return workspace_output_prev_next_impl(swayc_active_output(), true);
}
swayc_t *workspace_next() {
return workspace_prev_next_impl(swayc_active_workspace(), true);
}
swayc_t *workspace_output_prev() {
return workspace_output_prev_next_impl(swayc_active_output(), false);
}
swayc_t *workspace_prev() {
return workspace_prev_next_impl(swayc_active_workspace(), false);
}
bool workspace_switch(swayc_t *workspace) {
if (!workspace) {
return false;
}
swayc_t *active_ws = swayc_active_workspace();
if (config->auto_back_and_forth && active_ws == workspace && prev_workspace_name) {
swayc_t *new_ws = workspace_by_name(prev_workspace_name);
workspace = new_ws ? new_ws : workspace_create(prev_workspace_name);
}
if (!prev_workspace_name
|| (strcmp(prev_workspace_name, active_ws->name)
&& active_ws != workspace)) {
free(prev_workspace_name);
prev_workspace_name = malloc(strlen(active_ws->name) + 1);
if (!prev_workspace_name) {
sway_log(L_ERROR, "Unable to allocate previous workspace name");
return false;
}
strcpy(prev_workspace_name, active_ws->name);
}
// move sticky containers
if (swayc_parent_by_type(active_ws, C_OUTPUT) == swayc_parent_by_type(workspace, C_OUTPUT)) {
// don't change list while traversing it, use intermediate list instead
list_t *stickies = create_list();
for (int i = 0; i < active_ws->floating->length; i++) {
swayc_t *cont = active_ws->floating->items[i];
if (cont->sticky) {
list_add(stickies, cont);
}
}
for (int i = 0; i < stickies->length; i++) {
swayc_t *cont = stickies->items[i];
sway_log(L_DEBUG, "Moving sticky container %p to %p:%s",
cont, workspace, workspace->name);
swayc_t *parent = remove_child(cont);
add_floating(workspace, cont);
// Destroy old container if we need to
destroy_container(parent);
}
list_free(stickies);
}
sway_log(L_DEBUG, "Switching to workspace %p:%s", workspace, workspace->name);
if (!set_focused_container(get_focused_view(workspace))) {
return false;
}
swayc_t *output = swayc_parent_by_type(workspace, C_OUTPUT);
arrange_backgrounds();
arrange_windows(output, -1, -1);
return true;
}
swayc_t *workspace_for_pid(pid_t pid) {
int i;
swayc_t *ws = NULL;
struct pid_workspace *pw = NULL;
sway_log(L_DEBUG, "looking for workspace for pid %d", pid);
// leaving this here as it's useful for debugging
// sway_log(L_DEBUG, "all pid_workspaces");
// for (int k = 0; k < config->pid_workspaces->length; k++) {
// pw = config->pid_workspaces->items[k];
// sway_log(L_DEBUG, "pid %d workspace %s time_added %li", *pw->pid, pw->workspace, *pw->time_added);
// }
do {
for (i = 0; i < config->pid_workspaces->length; i++) {
pw = config->pid_workspaces->items[i];
pid_t *pw_pid = pw->pid;
if (pid == *pw_pid) {
sway_log(L_DEBUG, "found pid_workspace for pid %d, workspace %s", pid, pw->workspace);
break; // out of for loop
}
pw = NULL;
}
if (pw) {
break; // out of do-while loop
}
pid = get_parent_pid(pid);
// no sense in looking for matches for pid 0.
// also, if pid == getpid(), that is the compositor's
// pid, which definitely isn't helpful
} while (pid > 0 && pid != getpid());
if (pw) {
ws = workspace_by_name(pw->workspace);
if (!ws) {
sway_log(L_DEBUG, "Creating workspace %s for pid %d because it disappeared", pw->workspace, pid);
ws = workspace_create(pw->workspace);
}
list_del(config->pid_workspaces, i);
}
return ws;
}