feat(sway/scratchpad): add basic counter

include/factory.hpp

@@ -9,6 +9,7 @@
 #ifdef HAVE_SWAY
 #include "modules/sway/language.hpp"
 #include "modules/sway/mode.hpp"
+#include "modules/sway/scratchpad.hpp"
 #include "modules/sway/window.hpp"
 #include "modules/sway/workspaces.hpp"
 #endif

include/modules/sway/scratchpad.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <gtkmm/label.h>
+
+#include <mutex>
+#include <string>
+
+#include "ALabel.hpp"
+#include "bar.hpp"
+#include "client.hpp"
+#include "modules/sway/ipc/client.hpp"
+#include "util/json.hpp"
+
+namespace waybar::modules::sway {
+// class Scratchpad : public AModule, public sigc::trackable {
+class Scratchpad : public ALabel {
+ public:
+  Scratchpad(const std::string&, const waybar::Bar&, const Json::Value&);
+  ~Scratchpad() = default;
+  auto update() -> void;
+
+ private:
+  auto getTree() -> void;
+  auto onCmd(const struct Ipc::ipc_response&) -> void;
+  auto onEvent(const struct Ipc::ipc_response&) -> void;
+  // bool handleScroll(GdkEventScroll*);
+  Gtk::Box box_;
+  const Bar& bar_;
+  std::mutex mutex_;
+  int count_;
+  Ipc ipc_;
+  util::JsonParser parser_;
+};
+}  // namespace waybar::modules::sway

meson.build

@@ -184,7 +184,8 @@ src_files += [
     'src/modules/sway/mode.cpp',
     'src/modules/sway/language.cpp',
     'src/modules/sway/window.cpp',
-    'src/modules/sway/workspaces.cpp'
+    'src/modules/sway/workspaces.cpp',
+    'src/modules/sway/scratchpad.cpp'
 ]
 
 if true

src/factory.cpp

@@ -35,6 +35,9 @@ waybar::AModule* waybar::Factory::makeModule(const std::string& name) const {
     if (ref == "sway/language") {
       return new waybar::modules::sway::Language(id, config_[name]);
     }
+    if (ref == "sway/scratchpad") {
+      return new waybar::modules::sway::Scratchpad(id, bar_, config_[name]);
+    }
 #endif
 #ifdef HAVE_WLR
     if (ref == "wlr/taskbar") {

src/modules/sway/scratchpad.cpp

@@ -0,0 +1,52 @@
+#include "modules/sway/scratchpad.hpp"
+
+#include <spdlog/spdlog.h>
+
+#include <string>
+
+namespace waybar::modules::sway {
+Scratchpad::Scratchpad(const std::string& id, const waybar::Bar& bar, const Json::Value& config)
+    : ALabel(config, "scratchpad", id, "{count}"),
+      box_(bar.vertical ? Gtk::ORIENTATION_VERTICAL : Gtk::ORIENTATION_HORIZONTAL, 0),
+      bar_(bar),
+      count_(0) {
+  ipc_.subscribe(R"(["window"])");
+  ipc_.signal_event.connect(sigc::mem_fun(*this, &Scratchpad::onEvent));
+  ipc_.signal_cmd.connect(sigc::mem_fun(*this, &Scratchpad::onCmd));
+
+  getTree();
+
+  ipc_.setWorker([this] {
+    try {
+      ipc_.handleEvent();
+    } catch (const std::exception& e) {
+      spdlog::error("Scratchpad: {}", e.what());
+    }
+  });
+}
+auto Scratchpad::update() -> void {
+  label_.set_markup(fmt::format(format_, fmt::arg("count", count_)));
+  AModule::update();
+}
+
+auto Scratchpad::getTree() -> void {
+  try {
+    ipc_.sendCmd(IPC_GET_TREE);
+  } catch (const std::exception& e) {
+    spdlog::error("Scratchpad: {}", e.what());
+  }
+}
+
+auto Scratchpad::onCmd(const struct Ipc::ipc_response& res) -> void {
+  try {
+    std::lock_guard<std::mutex> lock(mutex_);
+    auto tree = parser_.parse(res.payload);
+    count_ = tree["nodes"][0]["nodes"][0]["floating_nodes"].size();
+    dp.emit();
+  } catch (const std::exception& e) {
+    spdlog::error("Scratchpad: {}", e.what());
+  }
+}
+
+auto Scratchpad::onEvent(const struct Ipc::ipc_response& res) -> void { getTree(); }
+}  // namespace waybar::modules::sway