sway-patched-tray-menu/sway/tree/workspace.c
Ryan Dwyer 2032f85d94 Simplify transactions by utilising a dirty flag on containers
This PR changes the way we handle transactions to a more simple method.
The new method is to mark containers as dirty from low level code
(eg. arranging, or container_destroy, and eventually seat_set_focus),
then call transaction_commit_dirty which picks up those containers and
runs them through a transaction. The old methods of using transactions
(arrange_and_commit, or creating one manually) are now no longer
possible.

The highest-level code (execute_command and view implementation
handlers) will call transaction_commit_dirty, so most other code just
needs to set containers as dirty. This is done by arranging, but can
also be done by calling container_set_dirty.
2018-07-14 23:14:55 +10:00

520 lines
16 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/arrange.h"
#include "sway/tree/container.h"
#include "sway/tree/workspace.h"
#include "list.h"
#include "log.h"
#include "util.h"
static struct sway_container *get_workspace_initial_output(const char *name) {
struct sway_container *parent;
// Search for workspace<->output pair
int e = config->workspace_outputs->length;
for (int i = 0; i < config->workspace_outputs->length; ++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 parent;
}
}
break;
}
}
// Otherwise put it on the focused output
struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *focus =
seat_get_focus_inactive(seat, &root_container);
parent = focus;
parent = container_parent(parent, C_OUTPUT);
return parent;
}
struct sway_container *workspace_create(struct sway_container *output,
const char *name) {
if (output == NULL) {
output = get_workspace_initial_output(name);
}
wlr_log(WLR_DEBUG, "Added workspace %s for output %s", name, output->name);
struct sway_container *workspace = container_create(C_WORKSPACE);
workspace->x = output->x;
workspace->y = output->y;
workspace->width = output->width;
workspace->height = output->height;
workspace->name = !name ? NULL : strdup(name);
workspace->prev_layout = L_NONE;
workspace->layout = container_get_default_layout(output);
struct sway_workspace *swayws = calloc(1, sizeof(struct sway_workspace));
if (!swayws) {
return NULL;
}
swayws->swayc = workspace;
swayws->floating = container_create(C_CONTAINER);
swayws->floating->parent = swayws->swayc;
swayws->floating->layout = L_FLOATING;
swayws->output_priority = create_list();
workspace->sway_workspace = swayws;
workspace_output_add_priority(workspace, output);
container_add_child(output, workspace);
container_sort_workspaces(output);
container_create_notify(workspace);
return workspace;
}
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(WLR_DEBUG, "Workspace: Generating new workspace name for output %s",
output_name);
// 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) {
char *_target = strdup(name);
_target = do_var_replacement(_target);
strip_quotes(_target);
while (isspace(*_target)) {
memmove(_target, _target+1, strlen(_target+1));
}
wlr_log(WLR_DEBUG, "Got valid workspace command for target: '%s'",
_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;
}
// If the command is workspace number <name>, isolate the name
if (strncmp(_target, "number ", strlen("number ")) == 0) {
size_t length = strlen(_target) - strlen("number ") + 1;
char *temp = malloc(length);
strncpy(temp, _target + strlen("number "), length - 1);
temp[length - 1] = '\0';
free(_target);
_target = temp;
wlr_log(WLR_DEBUG, "Isolated name from workspace number: '%s'", _target);
// Make sure the workspace number doesn't already exist
if (workspace_by_number(_target)) {
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(WLR_DEBUG, "Workspace: Found free name %s", _target);
} else {
free(_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;
int l = snprintf(NULL, 0, "%d", ws_num);
char *name = malloc(l + 1);
if (!sway_assert(name, "Cloud 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 = 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);
}
}
/**
* 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 (!output) {
return NULL;
}
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 = 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 (!workspace) {
return NULL;
}
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 =
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(NULL, 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(WLR_ERROR, "Unable to allocate previous workspace name");
return false;
}
strcpy(prev_workspace_name, active_ws->name);
}
// Move sticky containers to new workspace
struct sway_container *next_output = workspace->parent;
struct sway_container *next_output_prev_ws =
seat_get_active_child(seat, next_output);
struct sway_container *floating =
next_output_prev_ws->sway_workspace->floating;
bool has_sticky = false;
for (int i = 0; i < floating->children->length; ++i) {
struct sway_container *floater = floating->children->items[i];
if (floater->is_sticky) {
has_sticky = true;
container_remove_child(floater);
container_add_child(workspace->sway_workspace->floating, floater);
}
}
wlr_log(WLR_DEBUG, "Switching to workspace %p:%s",
workspace, workspace->name);
struct sway_container *next = seat_get_focus_inactive(seat, workspace);
if (next == NULL) {
next = workspace;
}
if (has_sticky) {
// If there's a sticky container, we might be setting focus to the same
// container that's already focused, so seat_set_focus is effectively a
// no op. We therefore need to send the IPC event and clean up the old
// workspace here.
ipc_event_workspace(active_ws, workspace, "focus");
if (!workspace_is_visible(active_ws) && workspace_is_empty(active_ws)) {
container_destroy(active_ws);
}
}
seat_set_focus(seat, next);
struct sway_container *output = container_parent(workspace, C_OUTPUT);
arrange_windows(output);
return true;
}
bool workspace_is_visible(struct sway_container *ws) {
if (ws->destroying) {
return false;
}
struct sway_container *output = container_parent(ws, C_OUTPUT);
struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *focus = seat_get_focus_inactive(seat, output);
if (focus->type != C_WORKSPACE) {
focus = container_parent(focus, C_WORKSPACE);
}
return focus == ws;
}
bool workspace_is_empty(struct sway_container *ws) {
if (!sway_assert(ws->type == C_WORKSPACE, "Expected a workspace")) {
return false;
}
if (ws->children->length) {
return false;
}
// Sticky views are not considered to be part of this workspace
struct sway_container *floating = ws->sway_workspace->floating;
for (int i = 0; i < floating->children->length; ++i) {
struct sway_container *floater = floating->children->items[i];
if (!floater->is_sticky) {
return false;
}
}
return true;
}
static int find_output(const void *id1, const void *id2) {
return strcmp(id1, id2) ? 0 : 1;
}
void workspace_output_raise_priority(struct sway_container *workspace,
struct sway_container *old_output, struct sway_container *output) {
struct sway_workspace *ws = workspace->sway_workspace;
int old_index = list_seq_find(ws->output_priority, find_output,
old_output->name);
if (old_index < 0) {
return;
}
int new_index = list_seq_find(ws->output_priority, find_output,
output->name);
if (new_index < 0) {
list_insert(ws->output_priority, old_index, strdup(output->name));
} else if (new_index > old_index) {
char *name = ws->output_priority->items[new_index];
list_del(ws->output_priority, new_index);
list_insert(ws->output_priority, old_index, name);
}
}
void workspace_output_add_priority(struct sway_container *workspace,
struct sway_container *output) {
int index = list_seq_find(workspace->sway_workspace->output_priority,
find_output, output->name);
if (index < 0) {
list_add(workspace->sway_workspace->output_priority,
strdup(output->name));
}
}
static bool _output_by_name(struct sway_container *output, void *data) {
return output->type == C_OUTPUT && strcasecmp(output->name, data) == 0;
}
struct sway_container *workspace_output_get_highest_available(
struct sway_container *ws, struct sway_container *exclude) {
for (int i = 0; i < ws->sway_workspace->output_priority->length; i++) {
char *name = ws->sway_workspace->output_priority->items[i];
if (exclude && strcasecmp(name, exclude->name) == 0) {
continue;
}
struct sway_container *output = container_find(&root_container,
_output_by_name, name);
if (output) {
return output;
}
}
return NULL;
}