swayfx/sway/tree/workspace.c
2018-03-31 11:13:20 -04:00

398 lines
12 KiB
C

#define _XOPEN_SOURCE 500
#include <ctype.h>
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include "stringop.h"
#include "sway/input/input-manager.h"
#include "sway/input/seat.h"
#include "sway/ipc-server.h"
#include "sway/tree/container.h"
#include "sway/tree/workspace.h"
#include "log.h"
#include "util.h"
char *prev_workspace_name = NULL;
struct workspace_by_number_data {
int len;
const char *cset;
const char *name;
};
void next_name_map(struct sway_container *ws, void *data) {
int *count = data;
++count;
}
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) {
wlr_log(L_DEBUG, "Workspace: Generating new workspace name for output %s",
output_name);
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;
// TODO: iterate over keycode bindings too
int order = INT_MAX;
char *target = NULL;
for (int i = 0; i < mode->keysym_bindings->length; ++i) {
struct sway_binding *binding = mode->keysym_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) {
wlr_log(L_DEBUG, "Got valid workspace command for target: '%s'", name);
char *_target = strdup(name);
strip_quotes(_target);
while (isspace(*_target)) {
memmove(_target, _target+1, strlen(_target+1));
}
// 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;
wlr_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) {
wlr_log(L_ERROR, "Could not allocate workspace name");
return NULL;
}
sprintf(name, "%d", ws_num++);
return name;
}
static bool _workspace_by_number(struct sway_container *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;
}
struct sway_container *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 container_find(&root_container,
_workspace_by_number, (void *) &wbnd);
}
static bool _workspace_by_name(struct sway_container *view, void *data) {
return (view->type == C_WORKSPACE) &&
(strcasecmp(view->name, (char *) data) == 0);
}
struct sway_container *workspace_by_name(const char *name) {
struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *current_workspace = NULL, *current_output = NULL;
struct sway_container *focus = sway_seat_get_focus(seat);
if (focus) {
current_workspace = container_parent(focus, C_WORKSPACE);
current_output = container_parent(focus, C_OUTPUT);
}
if (strcmp(name, "prev") == 0) {
return workspace_prev(current_workspace);
} else if (strcmp(name, "prev_on_output") == 0) {
return workspace_output_prev(current_output);
} else if (strcmp(name, "next") == 0) {
return workspace_next(current_workspace);
} else if (strcmp(name, "next_on_output") == 0) {
return workspace_output_next(current_output);
} else if (strcmp(name, "current") == 0) {
return current_workspace;
} else {
return container_find(&root_container, _workspace_by_name,
(void *)name);
}
}
struct sway_container *workspace_create(const char *name) {
struct sway_container *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 container_workspace_create(parent, name);
}
}
break;
}
}
// Otherwise create a new one
struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *focus =
sway_seat_get_focus_inactive(seat, &root_container);
parent = focus;
parent = container_parent(parent, C_OUTPUT);
struct sway_container *new_ws = container_workspace_create(parent, name);
ipc_event_workspace(NULL, new_ws, "init");
return new_ws;
}
struct sway_container *container_workspace_destroy(
struct sway_container *workspace) {
if (!sway_assert(workspace, "cannot destroy null workspace")) {
return NULL;
}
// Do not destroy this if it's the last workspace on this output
struct sway_container *output = container_parent(workspace, C_OUTPUT);
if (output && output->children->length == 1) {
return NULL;
}
struct sway_container *parent = workspace->parent;
if (workspace->children->length == 0) {
// destroy the WS if there are no children (TODO check for floating)
wlr_log(L_DEBUG, "destroying workspace '%s'", workspace->name);
ipc_event_workspace(workspace, NULL, "empty");
} else {
// Move children to a different workspace on this output
struct sway_container *new_workspace = NULL;
// TODO move floating
for (int i = 0; i < output->children->length; i++) {
if (output->children->items[i] != workspace) {
new_workspace = output->children->items[i];
break;
}
}
wlr_log(L_DEBUG, "moving children to different workspace '%s' -> '%s'",
workspace->name, new_workspace->name);
for (int i = 0; i < workspace->children->length; i++) {
container_move_to(workspace->children->items[i], new_workspace);
}
}
container_destroy(workspace);
return parent;
}
/**
* 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.
*/
struct sway_container *workspace_output_prev_next_impl(
struct sway_container *output, bool next) {
if (!sway_assert(output->type == C_OUTPUT,
"Argument must be an output, is %d", output->type)) {
return NULL;
}
struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *focus = sway_seat_get_focus_inactive(seat, output);
struct sway_container *workspace = (focus->type == C_WORKSPACE ?
focus :
container_parent(focus, C_WORKSPACE));
int i;
for (i = 0; i < output->children->length; i++) {
if (output->children->items[i] == workspace) {
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.
*/
struct sway_container *workspace_prev_next_impl(
struct sway_container *workspace, bool next) {
if (!sway_assert(workspace->type == C_WORKSPACE,
"Argument must be a workspace, is %d", workspace->type)) {
return NULL;
}
struct sway_container *current_output = workspace->parent;
int offset = next ? 1 : -1;
int start = next ? 0 : 1;
int end;
if (next) {
end = current_output->children->length - 1;
} else {
end = 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) {
struct sway_container *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;
}
struct sway_container *workspace_output_next(struct sway_container *current) {
return workspace_output_prev_next_impl(current, true);
}
struct sway_container *workspace_next(struct sway_container *current) {
return workspace_prev_next_impl(current, true);
}
struct sway_container *workspace_output_prev(struct sway_container *current) {
return workspace_output_prev_next_impl(current, false);
}
struct sway_container *workspace_prev(struct sway_container *current) {
return workspace_prev_next_impl(current, false);
}
bool workspace_switch(struct sway_container *workspace) {
if (!workspace) {
return false;
}
struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *focus =
sway_seat_get_focus_inactive(seat, &root_container);
if (!seat || !focus) {
return false;
}
struct sway_container *active_ws = focus;
if (active_ws->type != C_WORKSPACE) {
active_ws = container_parent(focus, C_WORKSPACE);
}
if (config->auto_back_and_forth
&& active_ws == workspace
&& prev_workspace_name) {
struct sway_container *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) {
wlr_log(L_ERROR, "Unable to allocate previous workspace name");
return false;
}
strcpy(prev_workspace_name, active_ws->name);
}
// TODO: Deal with sticky containers
wlr_log(L_DEBUG, "Switching to workspace %p:%s",
workspace, workspace->name);
struct sway_container *next = sway_seat_get_focus_inactive(seat, workspace);
if (next == NULL) {
next = workspace;
}
sway_seat_set_focus(seat, next);
struct sway_container *output = container_parent(workspace, C_OUTPUT);
arrange_windows(output, -1, -1);
return true;
}
bool workspace_is_visible(struct sway_container *ws) {
struct sway_container *output = container_parent(ws, C_OUTPUT);
struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *focus = sway_seat_get_focus_inactive(seat, output);
if (focus->type != C_WORKSPACE) {
focus = container_parent(focus, C_WORKSPACE);
}
return focus == ws;
}