Waybar/src/modules/sni/item.cpp

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#include "modules/sni/item.hpp"
#include <glibmm/main.h>
#include <iostream>
using namespace Glib;
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static const ustring SNI_INTERFACE_NAME = sn_item_interface_info()->name;
static const unsigned UPDATE_DEBOUNCE_TIME = 10;
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waybar::modules::SNI::Item::Item(std::string bn, std::string op, const Json::Value& config)
: bus_name(bn),
object_path(op),
icon_size(16),
effective_icon_size(0),
icon_theme(Gtk::IconTheme::create()),
update_pending_(false) {
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if (config["icon-size"].isUInt()) {
icon_size = config["icon-size"].asUInt();
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}
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event_box.add(image);
event_box.add_events(Gdk::BUTTON_PRESS_MASK);
event_box.signal_button_press_event().connect(sigc::mem_fun(*this, &Item::handleClick));
cancellable_ = Gio::Cancellable::create();
auto interface = Glib::wrap(sn_item_interface_info(), true);
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Gio::DBus::Proxy::create_for_bus(Gio::DBus::BusType::BUS_TYPE_SESSION,
bus_name,
object_path,
SNI_INTERFACE_NAME,
sigc::mem_fun(*this, &Item::proxyReady),
cancellable_,
interface);
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}
void waybar::modules::SNI::Item::proxyReady(Glib::RefPtr<Gio::AsyncResult>& result) {
try {
this->proxy_ = Gio::DBus::Proxy::create_for_bus_finish(result);
/* Properties are already cached during object creation */
auto cached_properties = this->proxy_->get_cached_property_names();
for (const auto& name : cached_properties) {
Glib::VariantBase value;
this->proxy_->get_cached_property(value, name);
setProperty(name, value);
}
this->proxy_->signal_signal().connect(sigc::mem_fun(*this, &Item::onSignal));
if (this->id.empty() || this->category.empty() || this->status.empty()) {
std::cerr << "Invalid Status Notifier Item: " + this->bus_name + "," + this->object_path
<< std::endl;
return;
}
this->updateImage();
// this->event_box.set_tooltip_text(this->title);
} catch (const Glib::Error& err) {
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g_error("Failed to create DBus Proxy for %s %s: %s",
bus_name.c_str(),
object_path.c_str(),
err.what().c_str());
} catch (const std::exception& err) {
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g_error("Failed to create DBus Proxy for %s %s: %s",
bus_name.c_str(),
object_path.c_str(),
err.what());
}
}
template <typename T>
T get_variant(VariantBase& value) {
return VariantBase::cast_dynamic<Variant<T>>(value).get();
}
void waybar::modules::SNI::Item::setProperty(const ustring& name, VariantBase& value) {
if (name == "Category") {
category = get_variant<std::string>(value);
} else if (name == "Id") {
id = get_variant<std::string>(value);
} else if (name == "Title") {
title = get_variant<std::string>(value);
} else if (name == "Status") {
status = get_variant<std::string>(value);
} else if (name == "WindowId") {
window_id = get_variant<int32_t>(value);
} else if (name == "IconName") {
icon_name = get_variant<std::string>(value);
} else if (name == "IconPixmap") {
icon_pixmap = this->extractPixBuf(value.gobj());
} else if (name == "OverlayIconName") {
overlay_icon_name = get_variant<std::string>(value);
} else if (name == "OverlayIconPixmap") {
// TODO: overlay_icon_pixmap
} else if (name == "AttentionIconName") {
attention_icon_name = get_variant<std::string>(value);
} else if (name == "AttentionIconPixmap") {
// TODO: attention_icon_pixmap
} else if (name == "AttentionMovieName") {
attention_movie_name = get_variant<std::string>(value);
} else if (name == "ToolTip") {
// TODO: tooltip
} else if (name == "IconThemePath") {
icon_theme_path = get_variant<std::string>(value);
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if (!icon_theme_path.empty()) {
icon_theme->set_search_path({icon_theme_path});
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}
} else if (name == "Menu") {
menu = get_variant<std::string>(value);
} else if (name == "ItemIsMenu") {
item_is_menu = get_variant<bool>(value);
}
}
void waybar::modules::SNI::Item::getUpdatedProperties() {
update_pending_ = false;
auto params = VariantContainerBase::create_tuple({Variant<ustring>::create(SNI_INTERFACE_NAME)});
proxy_->call("org.freedesktop.DBus.Properties.GetAll",
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sigc::mem_fun(*this, &Item::processUpdatedProperties),
params);
};
void waybar::modules::SNI::Item::processUpdatedProperties(Glib::RefPtr<Gio::AsyncResult>& _result) {
try {
auto result = proxy_->call_finish(_result);
// extract "a{sv}" from VariantContainerBase
Variant<std::map<ustring, VariantBase>> properties_variant;
result.get_child(properties_variant);
auto properties = properties_variant.get();
for (const auto& [name, value] : properties) {
VariantBase old_value;
proxy_->get_cached_property(old_value, name);
if (!value.equal(old_value)) {
proxy_->set_cached_property(name, value);
setProperty(name, const_cast<VariantBase&>(value));
}
}
this->updateImage();
// this->event_box.set_tooltip_text(this->title);
} catch (const Glib::Error& err) {
g_warning("Failed to update properties: %s", err.what().c_str());
} catch (const std::exception& err) {
g_warning("Failed to update properties: %s", err.what());
}
}
void waybar::modules::SNI::Item::onSignal(const ustring& sender_name, const ustring& signal_name,
const VariantContainerBase& arguments) {
if (!update_pending_ && signal_name.compare(0, 3, "New") == 0) {
/* Debounce signals and schedule update of all properties.
* Based on behavior of Plasma dataengine for StatusNotifierItem.
*/
update_pending_ = true;
Glib::signal_timeout().connect_once(sigc::mem_fun(*this, &Item::getUpdatedProperties),
UPDATE_DEBOUNCE_TIME);
}
}
static void pixbuf_data_deleter(const guint8* data) { g_free((void*)data); }
Glib::RefPtr<Gdk::Pixbuf> waybar::modules::SNI::Item::extractPixBuf(GVariant* variant) {
GVariantIter* it;
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g_variant_get(variant, "a(iiay)", &it);
if (it == nullptr) {
return Glib::RefPtr<Gdk::Pixbuf>{};
}
GVariant* val;
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gint lwidth = 0;
gint lheight = 0;
gint width;
gint height;
guchar* array = nullptr;
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while (g_variant_iter_loop(it, "(ii@ay)", &width, &height, &val)) {
if (width > 0 && height > 0 && val != nullptr && width * height > lwidth * lheight) {
auto size = g_variant_get_size(val);
/* Sanity check */
if (size == 4U * width * height) {
/* Find the largest image */
gconstpointer data = g_variant_get_data(val);
if (data != nullptr) {
if (array != nullptr) {
g_free(array);
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}
array = static_cast<guchar*>(g_memdup(data, size));
lwidth = width;
lheight = height;
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}
}
}
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}
g_variant_iter_free(it);
if (array != nullptr) {
/* argb to rgba */
for (uint32_t i = 0; i < 4U * lwidth * lheight; i += 4) {
guchar alpha = array[i];
array[i] = array[i + 1];
array[i + 1] = array[i + 2];
array[i + 2] = array[i + 3];
array[i + 3] = alpha;
}
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return Gdk::Pixbuf::create_from_data(array,
Gdk::Colorspace::COLORSPACE_RGB,
true,
8,
lwidth,
lheight,
4 * lwidth,
&pixbuf_data_deleter);
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}
return Glib::RefPtr<Gdk::Pixbuf>{};
}
void waybar::modules::SNI::Item::updateImage() {
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image.set_from_icon_name("image-missing", Gtk::ICON_SIZE_MENU);
image.set_pixel_size(icon_size);
if (!icon_name.empty()) {
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try {
// Try to find icons specified by path and filename
#ifdef FILESYSTEM_EXPERIMENTAL
if (std::experimental::filesystem::exists(icon_name)) {
#else
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if (std::filesystem::exists(icon_name)) {
#endif
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auto pixbuf = Gdk::Pixbuf::create_from_file(icon_name);
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if (pixbuf->gobj() != nullptr) {
// An icon specified by path and filename may be the wrong size for
// the tray
pixbuf = pixbuf->scale_simple(icon_size, icon_size, Gdk::InterpType::INTERP_BILINEAR);
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image.set(pixbuf);
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}
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} else {
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image.set(getIconByName(icon_name, icon_size));
}
} catch (Glib::Error& e) {
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std::cerr << "Exception: " << e.what() << std::endl;
}
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} else if (icon_pixmap) {
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// An icon extracted may be the wrong size for the tray
icon_pixmap = icon_pixmap->scale_simple(icon_size, icon_size, Gdk::InterpType::INTERP_BILINEAR);
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image.set(icon_pixmap);
}
}
Glib::RefPtr<Gdk::Pixbuf> waybar::modules::SNI::Item::getIconByName(std::string name,
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int request_size) {
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int tmp_size = 0;
icon_theme->rescan_if_needed();
auto sizes = icon_theme->get_icon_sizes(name.c_str());
for (auto const& size : sizes) {
// -1 == scalable
if (size == request_size || size == -1) {
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tmp_size = request_size;
break;
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} else if (size < request_size) {
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tmp_size = size;
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} else if (size > tmp_size && tmp_size > 0) {
tmp_size = request_size;
break;
}
}
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if (tmp_size == 0) {
tmp_size = request_size;
}
auto icon =
icon_theme->load_icon(name.c_str(), tmp_size, Gtk::IconLookupFlags::ICON_LOOKUP_FORCE_SIZE);
if (!icon) {
Glib::RefPtr<Gtk::IconTheme> default_theme = Gtk::IconTheme::get_default();
default_theme->rescan_if_needed();
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return default_theme->load_icon(
name.c_str(), tmp_size, Gtk::IconLookupFlags::ICON_LOOKUP_FORCE_SIZE);
}
return icon;
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}
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void waybar::modules::SNI::Item::onMenuDestroyed(Item* self) {
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self->gtk_menu = nullptr;
self->dbus_menu = nullptr;
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}
bool waybar::modules::SNI::Item::makeMenu(GdkEventButton* const& ev) {
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if (gtk_menu == nullptr) {
if (!menu.empty()) {
dbus_menu = dbusmenu_gtkmenu_new(bus_name.data(), menu.data());
if (dbus_menu != nullptr) {
g_object_ref_sink(G_OBJECT(dbus_menu));
g_object_weak_ref(G_OBJECT(dbus_menu), (GWeakNotify)onMenuDestroyed, this);
gtk_menu = Glib::wrap(GTK_MENU(dbus_menu));
gtk_menu->attach_to_widget(event_box);
}
}
}
if (gtk_menu != nullptr) {
#if GTK_CHECK_VERSION(3, 22, 0)
gtk_menu->popup_at_pointer(reinterpret_cast<GdkEvent*>(ev));
#else
gtk_menu->popup(ev->button, ev->time);
#endif
return true;
}
return false;
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}
bool waybar::modules::SNI::Item::handleClick(GdkEventButton* const& ev) {
auto parameters = VariantContainerBase::create_tuple(
{Variant<int>::create(ev->x), Variant<int>::create(ev->y)});
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if ((ev->button == 1 && item_is_menu) || ev->button == 3) {
if (!makeMenu(ev)) {
proxy_->call("ContextMenu", parameters);
return true;
}
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} else if (ev->button == 1) {
proxy_->call("Activate", parameters);
return true;
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} else if (ev->button == 2) {
proxy_->call("SecondaryActivate", parameters);
return true;
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}
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return false;
}