Waybar/src/modules/wlr/taskbar.cpp

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#include "modules/wlr/taskbar.hpp"
#include "glibmm/error.h"
#include "glibmm/fileutils.h"
#include "glibmm/refptr.h"
#include "util/format.hpp"
#include <algorithm>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <memory>
#include <sstream>
#include <gdkmm/monitor.h>
#include <gtkmm/icontheme.h>
#include <giomm/desktopappinfo.h>
#include <gio/gdesktopappinfo.h>
#include <spdlog/spdlog.h>
namespace waybar::modules::wlr {
/* String manipulation methods */
const std::string WHITESPACE = " \n\r\t\f\v";
static std::string ltrim(const std::string& s)
{
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size_t start = s.find_first_not_of(WHITESPACE);
return (start == std::string::npos) ? "" : s.substr(start);
}
static std::string rtrim(const std::string& s)
{
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size_t end = s.find_last_not_of(WHITESPACE);
return (end == std::string::npos) ? "" : s.substr(0, end + 1);
}
static std::string trim(const std::string& s)
{
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return rtrim(ltrim(s));
}
/* Icon loading functions */
static std::vector<std::string> search_prefix()
{
std::vector<std::string> prefixes = {""};
auto xdg_data_dirs = std::getenv("XDG_DATA_DIRS");
if (!xdg_data_dirs) {
prefixes.emplace_back("/usr/share/");
prefixes.emplace_back("/usr/local/share/");
} else {
std::string xdg_data_dirs_str(xdg_data_dirs);
size_t start = 0, end = 0;
do {
end = xdg_data_dirs_str.find(':', start);
auto p = xdg_data_dirs_str.substr(start, end-start);
prefixes.push_back(trim(p) + "/");
start = end == std::string::npos ? end : end + 1;
} while(end != std::string::npos);
}
std::string home_dir = std::getenv("HOME");
prefixes.push_back(home_dir + "/.local/share/");
for (auto& p : prefixes)
spdlog::debug("Using 'desktop' search path prefix: {}", p);
return prefixes;
}
static Glib::RefPtr<Gdk::Pixbuf> load_icon_from_file(std::string icon_path, int size)
{
try {
auto pb = Gdk::Pixbuf::create_from_file(icon_path, size, size);
return pb;
} catch(...) {
return {};
}
}
/* Method 1 - get the correct icon name from the desktop file */
static std::string get_from_desktop_app_info(const std::string &app_id)
{
static std::vector<std::string> prefixes = search_prefix();
std::vector<std::string> app_folders = {
"",
"applications/",
"applications/kde/",
"applications/org.kde."
};
std::vector<std::string> suffixes = {
"",
".desktop"
};
Glib::RefPtr<Gio::DesktopAppInfo> app_info;
for (auto& prefix : prefixes)
for (auto& folder : app_folders)
for (auto& suffix : suffixes)
if (!app_info)
app_info = Gio::DesktopAppInfo::create_from_filename(prefix + folder + app_id + suffix);
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if (app_info && app_info->get_icon())
return app_info->get_icon()->to_string();
return "";
}
/* Method 2 - use the app_id and check whether there is an icon with this name in the icon theme */
static std::string get_from_icon_theme(const Glib::RefPtr<Gtk::IconTheme>& icon_theme,
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const std::string &app_id)
{
if (icon_theme->lookup_icon(app_id, 24))
return app_id;
return "";
}
/* Method 3 - as last resort perform a search for most appropriate desktop info file */
static std::string get_from_desktop_app_info_search(const std::string &app_id)
{
std::string desktop_file = "";
gchar*** desktop_list = g_desktop_app_info_search(app_id.c_str());
if (desktop_list != nullptr && desktop_list[0] != nullptr) {
for (size_t i=0; desktop_list[0][i]; i++) {
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if (desktop_file == "") {
desktop_file = desktop_list[0][i];
} else {
auto tmp_info = Gio::DesktopAppInfo::create(desktop_list[0][i]);
auto startup_class = tmp_info->get_startup_wm_class();
if (startup_class == app_id) {
desktop_file = desktop_list[0][i];
break;
}
}
}
g_strfreev(desktop_list[0]);
}
g_free(desktop_list);
return get_from_desktop_app_info(desktop_file);
}
static bool image_load_icon(Gtk::Image& image, const Glib::RefPtr<Gtk::IconTheme>& icon_theme,
const std::string &app_id_list, int size)
{
std::string app_id;
std::istringstream stream(app_id_list);
bool found = false;
/* Wayfire sends a list of app-id's in space separated format, other compositors
* send a single app-id, but in any case this works fine */
while (stream >> app_id)
{
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size_t start = 0, end = app_id.size();
start = app_id.rfind(".", end);
std::string app_name = app_id.substr(start+1, app_id.size());
auto lower_app_id = app_id;
std::transform(lower_app_id.begin(), lower_app_id.end(), lower_app_id.begin(),
[](char c){ return std::tolower(c); });
std::string icon_name = get_from_icon_theme(icon_theme, app_id);
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if (icon_name.empty())
icon_name = get_from_icon_theme(icon_theme, lower_app_id);
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if (icon_name.empty())
icon_name = get_from_icon_theme(icon_theme, app_name);
if (icon_name.empty())
icon_name = get_from_desktop_app_info(app_id);
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if (icon_name.empty())
icon_name = get_from_desktop_app_info(lower_app_id);
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if (icon_name.empty())
icon_name = get_from_desktop_app_info(app_name);
if (icon_name.empty())
icon_name = get_from_desktop_app_info_search(app_id);
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if (icon_name.empty())
icon_name = "unknown";
Glib::RefPtr<Gdk::Pixbuf> pixbuf;
try {
pixbuf = icon_theme->load_icon(icon_name, size, Gtk::ICON_LOOKUP_FORCE_SIZE);
} catch(...) {
if (Glib::file_test(icon_name, Glib::FILE_TEST_EXISTS))
pixbuf = load_icon_from_file(icon_name, size);
else
pixbuf = {};
}
if (pixbuf) {
image.set(pixbuf);
found = true;
break;
}
}
return found;
}
/* Task class implementation */
uint32_t Task::global_id = 0;
static void tl_handle_title(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle,
const char *title)
{
return static_cast<Task*>(data)->handle_title(title);
}
static void tl_handle_app_id(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle,
const char *app_id)
{
return static_cast<Task*>(data)->handle_app_id(app_id);
}
static void tl_handle_output_enter(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle,
struct wl_output *output)
{
return static_cast<Task*>(data)->handle_output_enter(output);
}
static void tl_handle_output_leave(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle,
struct wl_output *output)
{
return static_cast<Task*>(data)->handle_output_leave(output);
}
static void tl_handle_state(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle,
struct wl_array *state)
{
return static_cast<Task*>(data)->handle_state(state);
}
static void tl_handle_done(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle)
{
return static_cast<Task*>(data)->handle_done();
}
static void tl_handle_parent(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle,
struct zwlr_foreign_toplevel_handle_v1 *parent)
{
/* This is explicitly left blank */
}
static void tl_handle_closed(void *data, struct zwlr_foreign_toplevel_handle_v1 *handle)
{
return static_cast<Task*>(data)->handle_closed();
}
static const struct zwlr_foreign_toplevel_handle_v1_listener toplevel_handle_impl = {
.title = tl_handle_title,
.app_id = tl_handle_app_id,
.output_enter = tl_handle_output_enter,
.output_leave = tl_handle_output_leave,
.state = tl_handle_state,
.done = tl_handle_done,
.closed = tl_handle_closed,
.parent = tl_handle_parent,
};
Task::Task(const waybar::Bar &bar, const Json::Value &config, Taskbar *tbar,
struct zwlr_foreign_toplevel_handle_v1 *tl_handle, struct wl_seat *seat) :
bar_{bar}, config_{config}, tbar_{tbar}, handle_{tl_handle}, seat_{seat},
id_{global_id++},
content_{bar.vertical ? Gtk::ORIENTATION_VERTICAL : Gtk::ORIENTATION_HORIZONTAL, 0},
button_visible_{false}
{
zwlr_foreign_toplevel_handle_v1_add_listener(handle_, &toplevel_handle_impl, this);
button_.set_relief(Gtk::RELIEF_NONE);
content_.add(text_before_);
content_.add(icon_);
content_.add(text_after_);
content_.show();
button_.add(content_);
with_icon_ = false;
format_before_.clear();
format_after_.clear();
if (config_["format"].isString()) {
/* The user defined a format string, use it */
auto format = config_["format"].asString();
auto icon_pos = format.find("{icon}");
if (icon_pos == 0) {
with_icon_ = true;
format_after_ = format.substr(6);
} else if (icon_pos == std::string::npos) {
format_before_ = format;
} else {
with_icon_ = true;
format_before_ = format.substr(0, icon_pos);
format_after_ = format.substr(icon_pos + 6);
}
} else {
/* The default is to only show the icon */
with_icon_ = true;
}
/* Strip spaces at the beginning and end of the format strings */
format_tooltip_.clear();
if (!config_["tooltip"].isBool() || config_["tooltip"].asBool()) {
if (config_["tooltip-format"].isString())
format_tooltip_ = config_["tooltip-format"].asString();
else
format_tooltip_ = "{title}";
}
/* Handle click events if configured */
if (config_["on-click"].isString() || config_["on-click-middle"].isString()
|| config_["on-click-right"].isString()) {
button_.add_events(Gdk::BUTTON_PRESS_MASK);
button_.signal_button_press_event().connect(
sigc::mem_fun(*this, &Task::handle_clicked), false);
}
}
Task::~Task()
{
if (handle_) {
zwlr_foreign_toplevel_handle_v1_destroy(handle_);
handle_ = nullptr;
}
if (button_visible_) {
tbar_->remove_button(button_);
button_visible_ = false;
}
}
std::string Task::repr() const
{
std::stringstream ss;
ss << "Task (" << id_ << ") " << title_ << " [" << app_id_ << "] <"
<< (active() ? "A" : "a")
<< (maximized() ? "M" : "m")
<< (minimized() ? "I" : "i")
<< (fullscreen() ? "F" : "f")
<< ">";
return ss.str();
}
std::string Task::state_string(bool shortened) const
{
std::stringstream ss;
if (shortened)
ss << (minimized() ? "m" : "") << (maximized() ? "M" : "")
<< (active() ? "A" : "") << (fullscreen() ? "F" : "");
else
ss << (minimized() ? "minimized " : "") << (maximized() ? "maximized " : "")
<< (active() ? "active " : "") << (fullscreen() ? "fullscreen " : "");
std::string res = ss.str();
if (shortened || res.empty())
return res;
else
return res.substr(0, res.size() - 1);
}
void Task::handle_title(const char *title)
{
title_ = title;
}
void Task::handle_app_id(const char *app_id)
{
app_id_ = app_id;
if (!with_icon_)
return;
int icon_size = config_["icon-size"].isInt() ? config_["icon-size"].asInt() : 16;
bool found = false;
for (auto& icon_theme : tbar_->icon_themes()) {
if (image_load_icon(icon_, icon_theme, app_id_, icon_size)) {
found = true;
break;
}
}
if (found)
icon_.show();
else
spdlog::debug("Couldn't find icon for {}", app_id_);
}
void Task::handle_output_enter(struct wl_output *output)
{
spdlog::debug("{} entered output {}", repr(), (void*)output);
if (!button_visible_ && (tbar_->all_outputs() || tbar_->show_output(output))) {
/* The task entered the output of the current bar make the button visible */
tbar_->add_button(button_);
button_.show();
button_visible_ = true;
spdlog::debug("{} now visible on {}", repr(), bar_.output->name);
}
}
void Task::handle_output_leave(struct wl_output *output)
{
spdlog::debug("{} left output {}", repr(), (void*)output);
if (button_visible_ && !tbar_->all_outputs() && tbar_->show_output(output)) {
/* The task left the output of the current bar, make the button invisible */
tbar_->remove_button(button_);
button_.hide();
button_visible_ = false;
spdlog::debug("{} now invisible on {}", repr(), bar_.output->name);
}
}
void Task::handle_state(struct wl_array *state)
{
state_ = 0;
size_t size = state->size / sizeof(uint32_t);
for (size_t i = 0; i < size; ++i) {
auto entry = static_cast<uint32_t*>(state->data)[i];
if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED)
state_ |= MAXIMIZED;
if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED)
state_ |= MINIMIZED;
if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED)
state_ |= ACTIVE;
if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN)
state_ |= FULLSCREEN;
}
}
void Task::handle_done()
{
spdlog::debug("{} changed", repr());
if (state_ & MAXIMIZED) {
button_.get_style_context()->add_class("maximized");
} else if (!(state_ & MAXIMIZED)) {
button_.get_style_context()->remove_class("maximized");
}
if (state_ & MINIMIZED) {
button_.get_style_context()->add_class("minimized");
} else if (!(state_ & MINIMIZED)) {
button_.get_style_context()->remove_class("minimized");
}
if (state_ & ACTIVE) {
button_.get_style_context()->add_class("active");
} else if (!(state_ & ACTIVE)) {
button_.get_style_context()->remove_class("active");
}
if (state_ & FULLSCREEN) {
button_.get_style_context()->add_class("fullscreen");
} else if (!(state_ & FULLSCREEN)) {
button_.get_style_context()->remove_class("fullscreen");
}
if (config_["active-first"].isBool() && config_["active-first"].asBool() && active())
tbar_->move_button(button_, 0);
tbar_->dp.emit();
}
void Task::handle_closed()
{
spdlog::debug("{} closed", repr());
zwlr_foreign_toplevel_handle_v1_destroy(handle_);
handle_ = nullptr;
if (button_visible_) {
tbar_->remove_button(button_);
button_visible_ = false;
}
tbar_->remove_task(id_);
}
bool Task::handle_clicked(GdkEventButton *bt)
{
std::string action;
if (config_["on-click"].isString() && bt->button == 1)
action = config_["on-click"].asString();
else if (config_["on-click-middle"].isString() && bt->button == 2)
action = config_["on-click-middle"].asString();
else if (config_["on-click-right"].isString() && bt->button == 3)
action = config_["on-click-right"].asString();
if (action.empty())
return true;
else if (action == "activate")
activate();
else if (action == "minimize")
minimize(!minimized());
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else if (action == "minimize-raise"){
if (minimized())
minimize(false);
else if (active())
minimize(true);
else
activate();
}
else if (action == "maximize")
maximize(!maximized());
else if (action == "fullscreen")
fullscreen(!fullscreen());
else if (action == "close")
close();
else
spdlog::warn("Unknown action {}", action);
return true;
}
bool Task::operator==(const Task &o) const
{
return o.id_ == id_;
}
bool Task::operator!=(const Task &o) const
{
return o.id_ != id_;
}
void Task::update()
{
bool markup = config_["markup"].isBool() ? config_["markup"].asBool() : false;
std::string title = title_;
std::string app_id = app_id_;
if (markup) {
title = Glib::Markup::escape_text(title);
app_id = Glib::Markup::escape_text(app_id);
}
if (!format_before_.empty()) {
auto txt = fmt::format(format_before_,
fmt::arg("title", title),
fmt::arg("app_id", app_id),
fmt::arg("state", state_string()),
fmt::arg("short_state", state_string(true))
);
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if (markup)
text_before_.set_markup(txt);
else
text_before_.set_label(txt);
text_before_.show();
}
if (!format_after_.empty()) {
auto txt = fmt::format(format_after_,
fmt::arg("title", title),
fmt::arg("app_id", app_id),
fmt::arg("state", state_string()),
fmt::arg("short_state", state_string(true))
);
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if (markup)
text_after_.set_markup(txt);
else
text_after_.set_label(txt);
text_after_.show();
}
if (!format_tooltip_.empty()) {
auto txt = fmt::format(format_tooltip_,
fmt::arg("title", title),
fmt::arg("app_id", app_id),
fmt::arg("state", state_string()),
fmt::arg("short_state", state_string(true))
);
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if (markup)
button_.set_tooltip_markup(txt);
else
button_.set_tooltip_text(txt);
}
}
void Task::maximize(bool set)
{
if (set)
zwlr_foreign_toplevel_handle_v1_set_maximized(handle_);
else
zwlr_foreign_toplevel_handle_v1_unset_maximized(handle_);
}
void Task::minimize(bool set)
{
if (set)
zwlr_foreign_toplevel_handle_v1_set_minimized(handle_);
else
zwlr_foreign_toplevel_handle_v1_unset_minimized(handle_);
}
void Task::activate()
{
zwlr_foreign_toplevel_handle_v1_activate(handle_, seat_);
}
void Task::fullscreen(bool set)
{
if (zwlr_foreign_toplevel_handle_v1_get_version(handle_) < ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_SET_FULLSCREEN_SINCE_VERSION) {
spdlog::warn("Foreign toplevel manager server does not support for set/unset fullscreen.");
return;
}
if (set)
zwlr_foreign_toplevel_handle_v1_set_fullscreen(handle_, nullptr);
else
zwlr_foreign_toplevel_handle_v1_unset_fullscreen(handle_);
}
void Task::close()
{
zwlr_foreign_toplevel_handle_v1_close(handle_);
}
/* Taskbar class implementation */
static void handle_global(void *data, struct wl_registry *registry, uint32_t name,
const char *interface, uint32_t version)
{
if (std::strcmp(interface, zwlr_foreign_toplevel_manager_v1_interface.name) == 0) {
static_cast<Taskbar*>(data)->register_manager(registry, name, version);
} else if (std::strcmp(interface, wl_seat_interface.name) == 0) {
static_cast<Taskbar*>(data)->register_seat(registry, name, version);
}
}
static void handle_global_remove(void *data, struct wl_registry *registry, uint32_t name)
{
/* Nothing to do here */
}
static const wl_registry_listener registry_listener_impl = {
.global = handle_global,
.global_remove = handle_global_remove
};
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Taskbar::Taskbar(const std::string &id, const waybar::Bar &bar, const Json::Value &config)
: waybar::AModule(config, "taskbar", id, false, false),
bar_(bar),
box_{bar.vertical ? Gtk::ORIENTATION_VERTICAL : Gtk::ORIENTATION_HORIZONTAL, 0},
manager_{nullptr}, seat_{nullptr}
{
box_.set_name("taskbar");
if (!id.empty()) {
box_.get_style_context()->add_class(id);
}
event_box_.add(box_);
struct wl_display *display = Client::inst()->wl_display;
struct wl_registry *registry = wl_display_get_registry(display);
wl_registry_add_listener(registry, &registry_listener_impl, this);
wl_display_roundtrip(display);
if (!manager_) {
spdlog::error("Failed to register as toplevel manager");
return;
}
if (!seat_) {
spdlog::error("Failed to get wayland seat");
return;
}
/* Get the configured icon theme if specified */
if (config_["icon-theme"].isArray()) {
for (auto& c : config_["icon-theme"]) {
auto it_name = c.asString();
auto it = Gtk::IconTheme::create();
it->set_custom_theme(it_name);
spdlog::debug("Use custom icon theme: {}", it_name);
icon_themes_.push_back(it);
}
} else if (config_["icon-theme"].isString()) {
auto it_name = config_["icon-theme"].asString();
auto it = Gtk::IconTheme::create();
it->set_custom_theme(it_name);
spdlog::debug("Use custom icon theme: {}", it_name);
icon_themes_.push_back(it);
}
icon_themes_.push_back(Gtk::IconTheme::get_default());
}
Taskbar::~Taskbar()
{
if (manager_) {
struct wl_display *display = Client::inst()->wl_display;
/*
* Send `stop` request and wait for one roundtrip.
* This is not quite correct as the protocol encourages us to wait for the .finished event,
* but it should work with wlroots foreign toplevel manager implementation.
*/
zwlr_foreign_toplevel_manager_v1_stop(manager_);
wl_display_roundtrip(display);
if (manager_) {
spdlog::warn("Foreign toplevel manager destroyed before .finished event");
zwlr_foreign_toplevel_manager_v1_destroy(manager_);
manager_ = nullptr;
}
}
}
void Taskbar::update()
{
for (auto& t : tasks_) {
t->update();
}
AModule::update();
}
static void tm_handle_toplevel(void *data, struct zwlr_foreign_toplevel_manager_v1 *manager,
struct zwlr_foreign_toplevel_handle_v1 *tl_handle)
{
return static_cast<Taskbar*>(data)->handle_toplevel_create(tl_handle);
}
static void tm_handle_finished(void *data, struct zwlr_foreign_toplevel_manager_v1 *manager)
{
return static_cast<Taskbar*>(data)->handle_finished();
}
static const struct zwlr_foreign_toplevel_manager_v1_listener toplevel_manager_impl = {
.toplevel = tm_handle_toplevel,
.finished = tm_handle_finished,
};
void Taskbar::register_manager(struct wl_registry *registry, uint32_t name, uint32_t version)
{
if (manager_) {
spdlog::warn("Register foreign toplevel manager again although already existing!");
return;
}
if (version < ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_SET_FULLSCREEN_SINCE_VERSION) {
spdlog::warn("Foreign toplevel manager server does not have the appropriate version."
" To be able to use all features, you need at least version 2, but server is version {}", version);
}
// limit version to a highest supported by the client protocol file
version = std::min<uint32_t>(version, zwlr_foreign_toplevel_manager_v1_interface.version);
manager_ = static_cast<struct zwlr_foreign_toplevel_manager_v1 *>(wl_registry_bind(registry, name,
&zwlr_foreign_toplevel_manager_v1_interface, version));
if (manager_)
zwlr_foreign_toplevel_manager_v1_add_listener(manager_, &toplevel_manager_impl, this);
else
spdlog::debug("Failed to register manager");
}
void Taskbar::register_seat(struct wl_registry *registry, uint32_t name, uint32_t version)
{
if (seat_) {
spdlog::warn("Register seat again although already existing!");
return;
}
version = std::min<uint32_t>(version, wl_seat_interface.version);
seat_ = static_cast<wl_seat*>(wl_registry_bind(registry, name, &wl_seat_interface, version));
}
void Taskbar::handle_toplevel_create(struct zwlr_foreign_toplevel_handle_v1 *tl_handle)
{
tasks_.push_back(std::make_unique<Task>(bar_, config_, this, tl_handle, seat_));
}
void Taskbar::handle_finished()
{
zwlr_foreign_toplevel_manager_v1_destroy(manager_);
manager_ = nullptr;
}
void Taskbar::add_button(Gtk::Button &bt)
{
box_.pack_start(bt, false, false);
}
void Taskbar::move_button(Gtk::Button &bt, int pos)
{
box_.reorder_child(bt, pos);
}
void Taskbar::remove_button(Gtk::Button &bt)
{
box_.remove(bt);
}
void Taskbar::remove_task(uint32_t id)
{
auto it = std::find_if(std::begin(tasks_), std::end(tasks_),
[id](const TaskPtr &p) { return p->id() == id; });
if (it == std::end(tasks_)) {
spdlog::warn("Can't find task with id {}", id);
return;
}
tasks_.erase(it);
}
bool Taskbar::show_output(struct wl_output *output) const
{
return output == gdk_wayland_monitor_get_wl_output(bar_.output->monitor->gobj());
}
bool Taskbar::all_outputs() const
{
return config_["all-outputs"].isBool() && config_["all-outputs"].asBool();
}
std::vector<Glib::RefPtr<Gtk::IconTheme>> Taskbar::icon_themes() const
{
return icon_themes_;
}
} /* namespace waybar::modules::wlr */