Merge pull request #3868 from pol-rivero/master

[hyprland/workspaces] Implement workspace taskbars

include/modules/hyprland/windowcreationpayload.hpp

@@ -26,18 +26,31 @@ namespace waybar::modules::hyprland {
 
 class Workspaces;
 
+struct WindowRepr {
+  std::string address;
+  std::string window_class;
+  std::string window_title;
+  std::string repr_rewrite;
+  bool isActive = false;
+
+ public:
+  bool empty() const { return address.empty(); }
+  void setActive(bool value) { isActive = value; }
+};
+
 class WindowCreationPayload {
  public:
   WindowCreationPayload(std::string workspace_name, WindowAddress window_address,
-                        std::string window_repr);
+                        WindowRepr window_repr);
   WindowCreationPayload(std::string workspace_name, WindowAddress window_address,
-                        std::string window_class, std::string window_title);
+                        std::string window_class, std::string window_title, bool is_active);
   WindowCreationPayload(Json::Value const& client_data);
 
   int incrementTimeSpentUncreated();
   bool isEmpty(Workspaces& workspace_manager);
   bool reprIsReady() const { return std::holds_alternative<Repr>(m_window); }
-  std::string repr(Workspaces& workspace_manager);
+  WindowRepr repr(Workspaces& workspace_manager);
+  void setActive(bool value) { m_isActive = value; }
 
   std::string getWorkspaceName() const { return m_workspaceName; }
   WindowAddress getAddress() const { return m_windowAddress; }
@@ -48,12 +61,13 @@ class WindowCreationPayload {
   void clearAddr();
   void clearWorkspaceName();
 
-  using Repr = std::string;
+  using Repr = WindowRepr;
   using ClassAndTitle = std::pair<std::string, std::string>;
   std::variant<Repr, ClassAndTitle> m_window;
 
   WindowAddress m_windowAddress;
   std::string m_workspaceName;
+  bool m_isActive = false;
 
   int m_timeSpentUncreated = 0;
 };

include/modules/hyprland/workspace.hpp

@@ -54,15 +54,18 @@ class Workspace {
   void setWindows(uint value) { m_windows = value; };
   void setName(std::string const& value) { m_name = value; };
   void setOutput(std::string const& value) { m_output = value; };
-  bool containsWindow(WindowAddress const& addr) const { return m_windowMap.contains(addr); }
+  bool containsWindow(WindowAddress const& addr) const {
+    return std::ranges::any_of(m_windowMap,
+                               [&addr](const auto& window) { return window.address == addr; });
+  };
   void insertWindow(WindowCreationPayload create_window_payload);
-  std::string removeWindow(WindowAddress const& addr);
   void initializeWindowMap(const Json::Value& clients_data);
+  void setActiveWindow(WindowAddress const& addr);
 
   bool onWindowOpened(WindowCreationPayload const& create_window_payload);
-  std::optional<std::string> closeWindow(WindowAddress const& addr);
+  std::optional<WindowRepr> closeWindow(WindowAddress const& addr);
 
-  void update(const std::string& format, const std::string& icon);
+  void update(const std::string& workspace_icon);
 
  private:
   Workspaces& m_workspaceManager;
@@ -78,11 +81,16 @@ class Workspace {
   bool m_isUrgent = false;
   bool m_isVisible = false;
 
-  std::map<WindowAddress, std::string> m_windowMap;
+  std::vector<WindowRepr> m_windowMap;
 
   Gtk::Button m_button;
   Gtk::Box m_content;
-  Gtk::Label m_label;
+  Gtk::Label m_labelBefore;
+  Gtk::Label m_labelAfter;
+
+  void updateTaskbar(const std::string& workspace_icon);
+  bool handleClick(const GdkEventButton* event_button, WindowAddress const& addr) const;
+  bool shouldSkipWindow(const WindowRepr& window_repr) const;
   IPC& m_ipc;
 };
 

include/modules/hyprland/workspaces.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <gtkmm/button.h>
+#include <gtkmm/enums.h>
 #include <gtkmm/label.h>
 #include <json/value.h>
 
@@ -18,6 +19,7 @@
 #include "modules/hyprland/windowcreationpayload.hpp"
 #include "modules/hyprland/workspace.hpp"
 #include "util/enum.hpp"
+#include "util/icon_loader.hpp"
 #include "util/regex_collection.hpp"
 
 using WindowAddress = std::string;
@@ -39,14 +41,25 @@ class Workspaces : public AModule, public EventHandler {
   auto specialVisibleOnly() const -> bool { return m_specialVisibleOnly; }
   auto persistentOnly() const -> bool { return m_persistentOnly; }
   auto moveToMonitor() const -> bool { return m_moveToMonitor; }
+  auto enableTaskbar() const -> bool { return m_enableTaskbar; }
+  auto taskbarWithIcon() const -> bool { return m_taskbarWithIcon; }
 
   auto getBarOutput() const -> std::string { return m_bar.output->name; }
+  auto formatBefore() const -> std::string { return m_formatBefore; }
+  auto formatAfter() const -> std::string { return m_formatAfter; }
+  auto taskbarFormatBefore() const -> std::string { return m_taskbarFormatBefore; }
+  auto taskbarFormatAfter() const -> std::string { return m_taskbarFormatAfter; }
+  auto taskbarIconSize() const -> int { return m_taskbarIconSize; }
+  auto taskbarOrientation() const -> Gtk::Orientation { return m_taskbarOrientation; }
+  auto onClickWindow() const -> std::string { return m_onClickWindow; }
+  auto getIgnoredWindows() const -> std::vector<std::regex> { return m_ignoreWindows; }
 
   std::string getRewrite(std::string window_class, std::string window_title);
   std::string& getWindowSeparator() { return m_formatWindowSeparator; }
   bool isWorkspaceIgnored(std::string const& workspace_name);
 
   bool windowRewriteConfigUsesTitle() const { return m_anyWindowRewriteRuleUsesTitle; }
+  const IconLoader& iconLoader() const { return m_iconLoader; }
 
  private:
   void onEvent(const std::string& e) override;
@@ -70,6 +83,7 @@ class Workspaces : public AModule, public EventHandler {
   auto populateIgnoreWorkspacesConfig(const Json::Value& config) -> void;
   auto populateFormatWindowSeparatorConfig(const Json::Value& config) -> void;
   auto populateWindowRewriteConfig(const Json::Value& config) -> void;
+  auto populateWorkspaceTaskbarConfig(const Json::Value& config) -> void;
 
   void registerIpc();
 
@@ -92,6 +106,7 @@ class Workspaces : public AModule, public EventHandler {
   void onWindowMoved(std::string const& payload);
 
   void onWindowTitleEvent(std::string const& payload);
+  void onActiveWindowChanged(WindowAddress const& payload);
 
   void onConfigReloaded();
 
@@ -131,7 +146,7 @@ class Workspaces : public AModule, public EventHandler {
   // Map for windows stored in workspaces not present in the current bar.
   // This happens when the user has multiple monitors (hence, multiple bars)
   // and doesn't share windows across bars (a.k.a `all-outputs` = false)
-  std::map<WindowAddress, std::string> m_orphanWindowMap;
+  std::map<WindowAddress, WindowRepr, std::less<>> m_orphanWindowMap;
 
   enum class SortMethod { ID, NAME, NUMBER, SPECIAL_CENTERED, DEFAULT };
   util::EnumParser<SortMethod> m_enumParser;
@@ -142,7 +157,8 @@ class Workspaces : public AModule, public EventHandler {
                                                  {"SPECIAL-CENTERED", SortMethod::SPECIAL_CENTERED},
                                                  {"DEFAULT", SortMethod::DEFAULT}};
 
-  std::string m_format;
+  std::string m_formatBefore;
+  std::string m_formatAfter;
 
   std::map<std::string, std::string> m_iconsMap;
   util::RegexCollection m_windowRewriteRules;
@@ -158,7 +174,20 @@ class Workspaces : public AModule, public EventHandler {
   std::vector<std::string> m_workspacesToRemove;
   std::vector<WindowCreationPayload> m_windowsToCreate;
 
+  IconLoader m_iconLoader;
+  bool m_enableTaskbar = false;
+  bool m_updateActiveWindow = false;
+  bool m_taskbarWithIcon = false;
+  bool m_taskbarWithTitle = false;
+  std::string m_taskbarFormatBefore;
+  std::string m_taskbarFormatAfter;
+  int m_taskbarIconSize = 16;
+  Gtk::Orientation m_taskbarOrientation = Gtk::ORIENTATION_HORIZONTAL;
+  std::string m_onClickWindow;
+  std::string m_currentActiveWindowAddress;
+
   std::vector<std::regex> m_ignoreWorkspaces;
+  std::vector<std::regex> m_ignoreWindows;
 
   std::mutex m_mutex;
   const Bar& m_bar;

include/modules/wlr/taskbar.hpp

@@ -19,6 +19,7 @@
 #include "bar.hpp"
 #include "client.hpp"
 #include "giomm/desktopappinfo.h"
+#include "util/icon_loader.hpp"
 #include "util/json.hpp"
 #include "wlr-foreign-toplevel-management-unstable-v1-client-protocol.h"
 
@@ -89,9 +90,6 @@ class Task {
   std::string state_string(bool = false) const;
   void set_minimize_hint();
   void on_button_size_allocated(Gtk::Allocation &alloc);
-  void set_app_info_from_app_id_list(const std::string &app_id_list);
-  bool image_load_icon(Gtk::Image &image, const Glib::RefPtr<Gtk::IconTheme> &icon_theme,
-                       Glib::RefPtr<Gio::DesktopAppInfo> app_info, int size);
   void hide_if_ignored();
 
  public:
@@ -153,7 +151,7 @@ class Taskbar : public waybar::AModule {
   Gtk::Box box_;
   std::vector<TaskPtr> tasks_;
 
-  std::vector<Glib::RefPtr<Gtk::IconTheme>> icon_themes_;
+  IconLoader icon_loader_;
   std::unordered_set<std::string> ignore_list_;
   std::map<std::string, std::string> app_ids_replace_map_;
 
@@ -178,7 +176,7 @@ class Taskbar : public waybar::AModule {
   bool show_output(struct wl_output *) const;
   bool all_outputs() const;
 
-  const std::vector<Glib::RefPtr<Gtk::IconTheme>> &icon_themes() const;
+  const IconLoader &icon_loader() const;
   const std::unordered_set<std::string> &ignore_list() const;
   const std::map<std::string, std::string> &app_ids_replace_map() const;
 };

include/util/icon_loader.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <gdkmm/general.h>
+#include <gio/gdesktopappinfo.h>
+#include <giomm/desktopappinfo.h>
+#include <glibmm/fileutils.h>
+#include <gtkmm/image.h>
+#include <spdlog/spdlog.h>
+
+#include <string>
+#include <vector>
+
+#include "util/gtk_icon.hpp"
+
+class IconLoader {
+ private:
+  std::vector<Glib::RefPtr<Gtk::IconTheme>> custom_icon_themes_;
+  Glib::RefPtr<Gtk::IconTheme> default_icon_theme_ = Gtk::IconTheme::get_default();
+  static std::vector<std::string> search_prefix();
+  static Glib::RefPtr<Gio::DesktopAppInfo> get_app_info_by_name(const std::string &app_id);
+  static Glib::RefPtr<Gio::DesktopAppInfo> get_desktop_app_info(const std::string &app_id);
+  static Glib::RefPtr<Gdk::Pixbuf> load_icon_from_file(std::string const &icon_path, int size);
+  static std::string get_icon_name_from_icon_theme(const Glib::RefPtr<Gtk::IconTheme> &icon_theme,
+                                                   const std::string &app_id);
+  static bool image_load_icon(Gtk::Image &image, const Glib::RefPtr<Gtk::IconTheme> &icon_theme,
+                              Glib::RefPtr<Gio::DesktopAppInfo> app_info, int size);
+
+ public:
+  void add_custom_icon_theme(const std::string &theme_name);
+  bool image_load_icon(Gtk::Image &image, Glib::RefPtr<Gio::DesktopAppInfo> app_info,
+                       int size) const;
+  static Glib::RefPtr<Gio::DesktopAppInfo> get_app_info_from_app_id_list(
+      const std::string &app_id_list);
+};

include/util/string.hpp

@@ -23,3 +23,26 @@ inline std::string capitalize(const std::string& str) {
                  [](unsigned char c) { return std::toupper(c); });
   return result;
 }
+
+inline std::string toLower(const std::string& str) {
+  std::string result = str;
+  std::transform(result.begin(), result.end(), result.begin(),
+                 [](unsigned char c) { return std::tolower(c); });
+  return result;
+}
+
+inline std::vector<std::string> split(std::string_view s, std::string_view delimiter,
+                                      int max_splits = -1) {
+  std::vector<std::string> result;
+  size_t pos = 0;
+  size_t next_pos = 0;
+  while ((next_pos = s.find(delimiter, pos)) != std::string::npos) {
+    result.push_back(std::string(s.substr(pos, next_pos - pos)));
+    pos = next_pos + delimiter.size();
+    if (max_splits > 0 && result.size() == static_cast<size_t>(max_splits)) {
+      break;
+    }
+  }
+  result.push_back(std::string(s.substr(pos)));
+  return result;
+}

man/waybar-hyprland-workspaces.5.scd

@@ -26,17 +26,49 @@ Addressed by *hyprland/workspaces*
 	Regex rules to map window class to an icon or preferred method of representation for a workspace's window.
 	Keys are the rules, while the values are the methods of representation. Values may use the placeholders {class} and {title} to use the window's original class and/or title respectively.
 	Rules may specify `class<...>`, `title<...>`, or both in order to fine-tune the matching.
-	You may assign an empty value to a rule to have it ignored from generating any representation in workspaces.
+	You may assign an empty value to a rule to have it ignored from generating any representation in workspaces. ++
+This setting is ignored if *workspace-taskbar.enable* is set to true.
 
-*window-rewrite-default*:
+*window-rewrite-default*: ++
 	typeof: string ++
 	default: "?" ++
-	The default method of representation for a workspace's window. This will be used for windows whose classes do not match any of the rules in *window-rewrite*.
+	The default method of representation for a workspace's window. This will be used for windows whose classes do not match any of the rules in *window-rewrite*. ++
+	This setting is ignored if *workspace-taskbar.enable* is set to true.
 
 *format-window-separator*: ++
 	typeof: string ++
 	default: " " ++
-	The separator to be used between windows in a workspace.
+	The separator to be used between windows in a workspace. ++
+	This setting is ignored if *workspace-taskbar.enable* is set to true.
+
+*workspace-taskbar*: ++
+	typeof: object ++
+	Contains settings for the workspace taskbar, an alternative mode for the workspaces module which displays the window icons as images instead of text.
+	
+		*enable*: ++
+	typeof: bool ++
+	default: false ++
+	Enables the workspace taskbar mode.
+
+		*format*: ++
+	typeof: string ++
+	default: {icon} ++
+	Format to use for each window in the workspace taskbar. Available placeholders are {icon} and {title}.
+
+		*icon-size*: ++
+	typeof: int ++
+	default: 16 ++
+	Size of the icons in the workspace taskbar.
+
+		*icon-theme*: ++
+	typeof: string | array ++
+	default: [] ++
+	Icon theme to use for the workspace taskbar. If an array is provided, the first theme that is found for a given icon will be used. If no theme is found (or the array is empty), the default icon theme is used.
+
+		*orientation*: ++
+	typeof: "horizontal" | "vertical" ++
+	default: horizontal ++
+	Direction in which the workspace taskbar is displayed.
 
 *show-special*: ++
 	typeof: bool ++
@@ -184,3 +216,4 @@ Additional to workspace name matching, the following *format-icons* can be set.
 - *#workspaces button.special*
 - *#workspaces button.urgent*
 - *#workspaces button.hosting-monitor* (gets applied if workspace-monitor == waybar-monitor)
+- *#workspaces .taskbar-window* (each window in the taskbar)

meson.build

@@ -183,6 +183,7 @@ src_files = files(
     'src/util/sanitize_str.cpp',
     'src/util/rewrite_string.cpp',
     'src/util/gtk_icon.cpp',
+    'src/util/icon_loader.cpp',
     'src/util/regex_collection.cpp',
     'src/util/css_reload_helper.cpp'
 )

src/modules/hyprland/windowcreationpayload.cpp

@@ -20,7 +20,7 @@ WindowCreationPayload::WindowCreationPayload(Json::Value const &client_data)
 }
 
 WindowCreationPayload::WindowCreationPayload(std::string workspace_name,
-                                             WindowAddress window_address, std::string window_repr)
+                                             WindowAddress window_address, WindowRepr window_repr)
     : m_window(std::move(window_repr)),
       m_windowAddress(std::move(window_address)),
       m_workspaceName(std::move(workspace_name)) {
@@ -30,10 +30,11 @@ WindowCreationPayload::WindowCreationPayload(std::string workspace_name,
 
 WindowCreationPayload::WindowCreationPayload(std::string workspace_name,
                                              WindowAddress window_address, std::string window_class,
-                                             std::string window_title)
+                                             std::string window_title, bool is_active)
     : m_window(std::make_pair(std::move(window_class), std::move(window_title))),
       m_windowAddress(std::move(window_address)),
-      m_workspaceName(std::move(workspace_name)) {
+      m_workspaceName(std::move(workspace_name)),
+      m_isActive(is_active) {
   clearAddr();
   clearWorkspaceName();
 }
@@ -92,13 +93,14 @@ void WindowCreationPayload::moveToWorkspace(std::string &new_workspace_name) {
   m_workspaceName = new_workspace_name;
 }
 
-std::string WindowCreationPayload::repr(Workspaces &workspace_manager) {
+WindowRepr WindowCreationPayload::repr(Workspaces &workspace_manager) {
   if (std::holds_alternative<Repr>(m_window)) {
     return std::get<Repr>(m_window);
   }
   if (std::holds_alternative<ClassAndTitle>(m_window)) {
-    auto [window_class, window_title] = std::get<ClassAndTitle>(m_window);
+    auto const &[window_class, window_title] = std::get<ClassAndTitle>(m_window);
-    return workspace_manager.getRewrite(window_class, window_title);
+    return {m_windowAddress, window_class, window_title,
+            workspace_manager.getRewrite(window_class, window_title), m_isActive};
   }
   // Unreachable
   spdlog::error("WorkspaceWindow::repr: Unreachable");

src/modules/hyprland/workspace.cpp

@@ -6,6 +6,8 @@
 #include <utility>
 
 #include "modules/hyprland/workspaces.hpp"
+#include "util/command.hpp"
+#include "util/icon_loader.hpp"
 
 namespace waybar::modules::hyprland {
 
@@ -32,7 +34,12 @@ Workspace::Workspace(const Json::Value &workspace_data, Workspaces &workspace_ma
                                                false);
 
   m_button.set_relief(Gtk::RELIEF_NONE);
-  m_content.set_center_widget(m_label);
+  if (m_workspaceManager.enableTaskbar()) {
+    m_content.set_orientation(m_workspaceManager.taskbarOrientation());
+    m_content.pack_start(m_labelBefore, false, false);
+  } else {
+    m_content.set_center_widget(m_labelBefore);
+  }
   m_button.add(m_content);
 
   initializeWindowMap(clients_data);
@@ -47,9 +54,14 @@ void addOrRemoveClass(const Glib::RefPtr<Gtk::StyleContext> &context, bool condi
   }
 }
 
-std::optional<std::string> Workspace::closeWindow(WindowAddress const &addr) {
+std::optional<WindowRepr> Workspace::closeWindow(WindowAddress const &addr) {
-  if (m_windowMap.contains(addr)) {
+  auto it = std::ranges::find_if(m_windowMap,
-    return removeWindow(addr);
+                                 [&addr](const auto &window) { return window.address == addr; });
+  // If the vector contains the address, remove it and return the window representation
+  if (it != m_windowMap.end()) {
+    WindowRepr windowRepr = *it;
+    m_windowMap.erase(it);
+    return windowRepr;
   }
   return std::nullopt;
 }
@@ -91,12 +103,26 @@ void Workspace::initializeWindowMap(const Json::Value &clients_data) {
   }
 }
 
+void Workspace::setActiveWindow(WindowAddress const &addr) {
+  for (auto &window : m_windowMap) {
+    window.setActive(window.address == addr);
+  }
+}
+
 void Workspace::insertWindow(WindowCreationPayload create_window_payload) {
   if (!create_window_payload.isEmpty(m_workspaceManager)) {
     auto repr = create_window_payload.repr(m_workspaceManager);
 
-    if (!repr.empty()) {
+    if (!repr.empty() || m_workspaceManager.enableTaskbar()) {
-      m_windowMap[create_window_payload.getAddress()] = repr;
+      auto addr = create_window_payload.getAddress();
+      auto it = std::ranges::find_if(
+          m_windowMap, [&addr](const auto &window) { return window.address == addr; });
+      // If the vector contains the address, update the window representation, otherwise insert it
+      if (it != m_windowMap.end()) {
+        *it = repr;
+      } else {
+        m_windowMap.emplace_back(repr);
+      }
     }
   }
 };
@@ -109,12 +135,6 @@ bool Workspace::onWindowOpened(WindowCreationPayload const &create_window_payloa
   return false;
 }
 
-std::string Workspace::removeWindow(WindowAddress const &addr) {
-  std::string windowRepr = m_windowMap[addr];
-  m_windowMap.erase(addr);
-  return windowRepr;
-}
-
 std::string &Workspace::selectIcon(std::map<std::string, std::string> &icons_map) {
   spdlog::trace("Selecting icon for workspace {}", name());
   if (isUrgent()) {
@@ -172,7 +192,7 @@ std::string &Workspace::selectIcon(std::map<std::string, std::string> &icons_map
   return m_name;
 }
 
-void Workspace::update(const std::string &format, const std::string &icon) {
+void Workspace::update(const std::string &workspace_icon) {
   if (this->m_workspaceManager.persistentOnly() && !this->isPersistent()) {
     m_button.hide();
     return;
@@ -204,21 +224,122 @@ void Workspace::update(const std::string &format, const std::string &icon) {
   addOrRemoveClass(styleContext, m_workspaceManager.getBarOutput() == output(), "hosting-monitor");
 
   std::string windows;
+  // Optimization: The {windows} substitution string is only possible if the taskbar is disabled, no
+  // need to compute this if enableTaskbar() is true
+  if (!m_workspaceManager.enableTaskbar()) {
     auto windowSeparator = m_workspaceManager.getWindowSeparator();
 
     bool isNotFirst = false;
 
-  for (auto &[_pid, window_repr] : m_windowMap) {
+    for (const auto &window_repr : m_windowMap) {
       if (isNotFirst) {
         windows.append(windowSeparator);
       }
       isNotFirst = true;
-    windows.append(window_repr);
+      windows.append(window_repr.repr_rewrite);
+    }
   }
 
-  m_label.set_markup(fmt::format(fmt::runtime(format), fmt::arg("id", id()),
+  auto formatBefore = m_workspaceManager.formatBefore();
-                                 fmt::arg("name", name()), fmt::arg("icon", icon),
+  m_labelBefore.set_markup(fmt::format(fmt::runtime(formatBefore), fmt::arg("id", id()),
+                                       fmt::arg("name", name()), fmt::arg("icon", workspace_icon),
                                        fmt::arg("windows", windows)));
+  m_labelBefore.get_style_context()->add_class("workspace-label");
+
+  if (m_workspaceManager.enableTaskbar()) {
+    updateTaskbar(workspace_icon);
+  }
+}
+
+void Workspace::updateTaskbar(const std::string &workspace_icon) {
+  for (auto child : m_content.get_children()) {
+    if (child != &m_labelBefore) {
+      m_content.remove(*child);
+    }
+  }
+
+  bool isFirst = true;
+  for (const auto &window_repr : m_windowMap) {
+    if (shouldSkipWindow(window_repr)) {
+      continue;
+    }
+    if (isFirst) {
+      isFirst = false;
+    } else if (m_workspaceManager.getWindowSeparator() != "") {
+      auto windowSeparator = Gtk::make_managed<Gtk::Label>(m_workspaceManager.getWindowSeparator());
+      m_content.pack_start(*windowSeparator, false, false);
+      windowSeparator->show();
+    }
+    auto window_box = Gtk::make_managed<Gtk::Box>(Gtk::ORIENTATION_HORIZONTAL);
+    window_box->set_tooltip_text(window_repr.window_title);
+    window_box->get_style_context()->add_class("taskbar-window");
+    if (window_repr.isActive) {
+      window_box->get_style_context()->add_class("active");
+    }
+    auto event_box = Gtk::manage(new Gtk::EventBox());
+    event_box->add(*window_box);
+    if (m_workspaceManager.onClickWindow() != "") {
+      event_box->signal_button_press_event().connect(
+          sigc::bind(sigc::mem_fun(*this, &Workspace::handleClick), window_repr.address));
+    }
+
+    auto text_before = fmt::format(fmt::runtime(m_workspaceManager.taskbarFormatBefore()),
+                                   fmt::arg("title", window_repr.window_title));
+    if (!text_before.empty()) {
+      auto window_label_before = Gtk::make_managed<Gtk::Label>(text_before);
+      window_box->pack_start(*window_label_before, true, true);
+    }
+
+    if (m_workspaceManager.taskbarWithIcon()) {
+      auto app_info_ = IconLoader::get_app_info_from_app_id_list(window_repr.window_class);
+      int icon_size = m_workspaceManager.taskbarIconSize();
+      auto window_icon = Gtk::make_managed<Gtk::Image>();
+      m_workspaceManager.iconLoader().image_load_icon(*window_icon, app_info_, icon_size);
+      window_box->pack_start(*window_icon, false, false);
+    }
+
+    auto text_after = fmt::format(fmt::runtime(m_workspaceManager.taskbarFormatAfter()),
+                                  fmt::arg("title", window_repr.window_title));
+    if (!text_after.empty()) {
+      auto window_label_after = Gtk::make_managed<Gtk::Label>(text_after);
+      window_box->pack_start(*window_label_after, true, true);
+    }
+
+    m_content.pack_start(*event_box, true, false);
+    event_box->show_all();
+  }
+
+  auto formatAfter = m_workspaceManager.formatAfter();
+  if (!formatAfter.empty()) {
+    m_labelAfter.set_markup(fmt::format(fmt::runtime(formatAfter), fmt::arg("id", id()),
+                                        fmt::arg("name", name()),
+                                        fmt::arg("icon", workspace_icon)));
+    m_content.pack_end(m_labelAfter, false, false);
+    m_labelAfter.show();
+  }
+}
+
+bool Workspace::handleClick(const GdkEventButton *event_button, WindowAddress const &addr) const {
+  if (event_button->type == GDK_BUTTON_PRESS) {
+    std::string command = std::regex_replace(m_workspaceManager.onClickWindow(),
+                                             std::regex("\\{address\\}"), "0x" + addr);
+    command = std::regex_replace(command, std::regex("\\{button\\}"),
+                                 std::to_string(event_button->button));
+    auto res = util::command::execNoRead(command);
+    if (res.exit_code != 0) {
+      spdlog::error("Failed to execute {}: {}", command, res.out);
+    }
+  }
+  return true;
+}
+
+bool Workspace::shouldSkipWindow(const WindowRepr &window_repr) const {
+  auto ignore_list = m_workspaceManager.getIgnoredWindows();
+  auto it = std::ranges::find_if(ignore_list, [&window_repr](const auto &ignoreItem) {
+    return std::regex_match(window_repr.window_class, ignoreItem) ||
+           std::regex_match(window_repr.window_title, ignoreItem);
+  });
+  return it != ignore_list.end();
 }
 
 }  // namespace waybar::modules::hyprland

src/modules/hyprland/workspaces.cpp

@@ -10,6 +10,7 @@
 #include <utility>
 
 #include "util/regex_collection.hpp"
+#include "util/string.hpp"
 
 namespace waybar::modules::hyprland {
 
@@ -346,6 +347,8 @@ void Workspaces::onEvent(const std::string &ev) {
     onWorkspaceRenamed(payload);
   } else if (eventName == "windowtitlev2") {
     onWindowTitleEvent(payload);
+  } else if (eventName == "activewindowv2") {
+    onActiveWindowChanged(payload);
   } else if (eventName == "configreloaded") {
     onConfigReloaded();
   }
@@ -495,12 +498,14 @@ void Workspaces::onWindowOpened(std::string const &payload) {
 
   std::string windowTitle = payload.substr(nextCommaIdx + 1, payload.length() - nextCommaIdx);
 
-  m_windowsToCreate.emplace_back(workspaceName, windowAddress, windowClass, windowTitle);
+  bool isActive = m_currentActiveWindowAddress == windowAddress;
+  m_windowsToCreate.emplace_back(workspaceName, windowAddress, windowClass, windowTitle, isActive);
 }
 
 void Workspaces::onWindowClosed(std::string const &addr) {
   spdlog::trace("Window closed: {}", addr);
   updateWindowCount();
+  m_orphanWindowMap.erase(addr);
   for (auto &workspace : m_workspaces) {
     if (workspace->closeWindow(addr)) {
       break;
@@ -513,7 +518,7 @@ void Workspaces::onWindowMoved(std::string const &payload) {
   updateWindowCount();
   auto [windowAddress, _, workspaceName] = splitTriplePayload(payload);
 
-  std::string windowRepr;
+  WindowRepr windowRepr;
 
   // If the window was still queued to be created, just change its destination
   // and exit
@@ -539,6 +544,7 @@ void Workspaces::onWindowMoved(std::string const &payload) {
 
   // ...and then add it to the new workspace
   if (!windowRepr.empty()) {
+    m_orphanWindowMap.erase(windowAddress);
     m_windowsToCreate.emplace_back(workspaceName, windowAddress, windowRepr);
   }
 }
@@ -564,8 +570,9 @@ void Workspaces::onWindowTitleEvent(std::string const &payload) {
         (*windowWorkspace)->insertWindow(std::move(wcp));
       };
     } else {
-      auto queuedWindow = std::ranges::find_if(m_windowsToCreate, [payload](auto &windowPayload) {
+      auto queuedWindow =
-        return windowPayload.getAddress() == payload;
+          std::ranges::find_if(m_windowsToCreate, [&windowAddress](auto &windowPayload) {
+            return windowPayload.getAddress() == windowAddress;
           });
 
       // If the window was queued, rename it in the queue
@@ -577,7 +584,7 @@ void Workspaces::onWindowTitleEvent(std::string const &payload) {
 
   if (inserter.has_value()) {
     Json::Value clientsData = m_ipc.getSocket1JsonReply("clients");
-    std::string jsonWindowAddress = fmt::format("0x{}", payload);
+    std::string jsonWindowAddress = fmt::format("0x{}", windowAddress);
 
     auto client = std::ranges::find_if(clientsData, [jsonWindowAddress](auto &client) {
       return client["address"].asString() == jsonWindowAddress;
@@ -589,6 +596,21 @@ void Workspaces::onWindowTitleEvent(std::string const &payload) {
   }
 }
 
+void Workspaces::onActiveWindowChanged(WindowAddress const &activeWindowAddress) {
+  spdlog::trace("Active window changed: {}", activeWindowAddress);
+  m_currentActiveWindowAddress = activeWindowAddress;
+
+  for (auto &[address, window] : m_orphanWindowMap) {
+    window.setActive(address == activeWindowAddress);
+  }
+  for (auto const &workspace : m_workspaces) {
+    workspace->setActiveWindow(activeWindowAddress);
+  }
+  for (auto &window : m_windowsToCreate) {
+    window.setActive(window.getAddress() == activeWindowAddress);
+  }
+}
+
 void Workspaces::onConfigReloaded() {
   spdlog::info("Hyprland config reloaded, reinitializing hyprland/workspaces module...");
   init();
@@ -596,8 +618,9 @@ void Workspaces::onConfigReloaded() {
 
 auto Workspaces::parseConfig(const Json::Value &config) -> void {
   const auto &configFormat = config["format"];
-  m_format = configFormat.isString() ? configFormat.asString() : "{name}";
+  m_formatBefore = configFormat.isString() ? configFormat.asString() : "{name}";
-  m_withIcon = m_format.find("{icon}") != std::string::npos;
+  m_withIcon = m_formatBefore.find("{icon}") != std::string::npos;
+  auto withWindows = m_formatBefore.find("{windows}") != std::string::npos;
 
   if (m_withIcon && m_iconsMap.empty()) {
     populateIconsMap(config["format-icons"]);
@@ -615,6 +638,15 @@ auto Workspaces::parseConfig(const Json::Value &config) -> void {
   populateIgnoreWorkspacesConfig(config);
   populateFormatWindowSeparatorConfig(config);
   populateWindowRewriteConfig(config);
+
+  if (withWindows) {
+    populateWorkspaceTaskbarConfig(config);
+  }
+  if (m_enableTaskbar) {
+    auto parts = split(m_formatBefore, "{windows}", 1);
+    m_formatBefore = parts[0];
+    m_formatAfter = parts.size() > 1 ? parts[1] : "";
+  }
 }
 
 auto Workspaces::populateIconsMap(const Json::Value &formatIcons) -> void {
@@ -687,6 +719,64 @@ auto Workspaces::populateWindowRewriteConfig(const Json::Value &config) -> void
       [this](std::string &window_rule) { return windowRewritePriorityFunction(window_rule); });
 }
 
+auto Workspaces::populateWorkspaceTaskbarConfig(const Json::Value &config) -> void {
+  const auto &workspaceTaskbar = config["workspace-taskbar"];
+  if (!workspaceTaskbar.isObject()) {
+    spdlog::debug("workspace-taskbar is not defined or is not an object, using default rules.");
+    return;
+  }
+
+  populateBoolConfig(workspaceTaskbar, "enable", m_enableTaskbar);
+  populateBoolConfig(workspaceTaskbar, "update-active-window", m_updateActiveWindow);
+
+  if (workspaceTaskbar["format"].isString()) {
+    /* The user defined a format string, use it */
+    std::string format = workspaceTaskbar["format"].asString();
+    m_taskbarWithTitle = format.find("{title") != std::string::npos; /* {title} or {title.length} */
+    auto parts = split(format, "{icon}", 1);
+    m_taskbarFormatBefore = parts[0];
+    if (parts.size() > 1) {
+      m_taskbarWithIcon = true;
+      m_taskbarFormatAfter = parts[1];
+    }
+  } else {
+    /* The default is to only show the icon */
+    m_taskbarWithIcon = true;
+  }
+
+  auto iconTheme = workspaceTaskbar["icon-theme"];
+  if (iconTheme.isArray()) {
+    for (auto &c : iconTheme) {
+      m_iconLoader.add_custom_icon_theme(c.asString());
+    }
+  } else if (iconTheme.isString()) {
+    m_iconLoader.add_custom_icon_theme(iconTheme.asString());
+  }
+
+  if (workspaceTaskbar["icon-size"].isInt()) {
+    m_taskbarIconSize = workspaceTaskbar["icon-size"].asInt();
+  }
+  if (workspaceTaskbar["orientation"].isString() &&
+      toLower(workspaceTaskbar["orientation"].asString()) == "vertical") {
+    m_taskbarOrientation = Gtk::ORIENTATION_VERTICAL;
+  }
+
+  if (workspaceTaskbar["on-click-window"].isString()) {
+    m_onClickWindow = workspaceTaskbar["on-click-window"].asString();
+  }
+
+  if (workspaceTaskbar["ignore-list"].isArray()) {
+    for (auto &windowRegex : workspaceTaskbar["ignore-list"]) {
+      std::string ruleString = windowRegex.asString();
+      try {
+        m_ignoreWindows.emplace_back(ruleString, std::regex_constants::icase);
+      } catch (const std::regex_error &e) {
+        spdlog::error("Invalid rule {}: {}", ruleString, e.what());
+      }
+    }
+  }
+}
+
 void Workspaces::registerOrphanWindow(WindowCreationPayload create_window_payload) {
   if (!create_window_payload.isEmpty(*this)) {
     m_orphanWindowMap[create_window_payload.getAddress()] = create_window_payload.repr(*this);
@@ -707,12 +797,18 @@ auto Workspaces::registerIpc() -> void {
   m_ipc.registerForIPC("urgent", this);
   m_ipc.registerForIPC("configreloaded", this);
 
-  if (windowRewriteConfigUsesTitle()) {
+  if (windowRewriteConfigUsesTitle() || m_taskbarWithTitle) {
     spdlog::info(
         "Registering for Hyprland's 'windowtitlev2' events because a user-defined window "
         "rewrite rule uses the 'title' field.");
     m_ipc.registerForIPC("windowtitlev2", this);
   }
+  if (m_updateActiveWindow) {
+    spdlog::info(
+        "Registering for Hyprland's 'activewindowv2' events because 'update-active-window' is set "
+        "to true.");
+    m_ipc.registerForIPC("activewindowv2", this);
+  }
 }
 
 void Workspaces::removeWorkspacesToRemove() {
@@ -904,7 +1000,7 @@ auto Workspaces::update() -> void {
 
 void Workspaces::updateWindowCount() {
   const Json::Value workspacesJson = m_ipc.getSocket1JsonReply("workspaces");
-  for (auto &workspace : m_workspaces) {
+  for (auto const &workspace : m_workspaces) {
     auto workspaceJson = std::ranges::find_if(workspacesJson, [&](Json::Value const &x) {
       return x["name"].asString() == workspace->name() ||
              (workspace->isSpecial() && x["name"].asString() == "special:" + workspace->name());
@@ -979,7 +1075,7 @@ void Workspaces::updateWorkspaceStates() {
     if (updatedWorkspace != updatedWorkspaces.end()) {
       workspace->setOutput((*updatedWorkspace)["monitor"].asString());
     }
-    workspace->update(m_format, workspaceIcon);
+    workspace->update(workspaceIcon);
   }
 }
 

src/modules/wlr/taskbar.cpp

@@ -26,194 +26,6 @@
 
 namespace waybar::modules::wlr {
 
-/* Icon loading functions */
-static std::vector<std::string> search_prefix() {
-  std::vector<std::string> prefixes = {""};
-
-  std::string home_dir = std::getenv("HOME");
-  prefixes.push_back(home_dir + "/.local/share/");
-
-  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);
-  }
-
-  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 {};
-  }
-}
-
-static Glib::RefPtr<Gio::DesktopAppInfo> get_app_info_by_name(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"};
-
-  for (auto &prefix : prefixes) {
-    for (auto &folder : app_folders) {
-      for (auto &suffix : suffixes) {
-        auto app_info_ =
-            Gio::DesktopAppInfo::create_from_filename(prefix + folder + app_id + suffix);
-        if (!app_info_) {
-          continue;
-        }
-
-        return app_info_;
-      }
-    }
-  }
-
-  return {};
-}
-
-Glib::RefPtr<Gio::DesktopAppInfo> get_desktop_app_info(const std::string &app_id) {
-  auto app_info = get_app_info_by_name(app_id);
-  if (app_info) {
-    return app_info;
-  }
-
-  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++) {
-      if (desktop_file == "") {
-        desktop_file = desktop_list[0][i];
-      } else {
-        auto tmp_info = Gio::DesktopAppInfo::create(desktop_list[0][i]);
-        if (!tmp_info)
-          // see https://github.com/Alexays/Waybar/issues/1446
-          continue;
-
-        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_app_info_by_name(desktop_file);
-}
-
-void Task::set_app_info_from_app_id_list(const std::string &app_id_list) {
-  std::string app_id;
-  std::istringstream stream(app_id_list);
-
-  /* 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) {
-    app_info_ = get_desktop_app_info(app_id);
-    if (app_info_) {
-      return;
-    }
-
-    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); });
-    app_info_ = get_desktop_app_info(lower_app_id);
-    if (app_info_) {
-      return;
-    }
-
-    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());
-    app_info_ = get_desktop_app_info(app_name);
-    if (app_info_) {
-      return;
-    }
-
-    start = app_id.find("-");
-    app_name = app_id.substr(0, start);
-    app_info_ = get_desktop_app_info(app_name);
-  }
-}
-
-static std::string get_icon_name_from_icon_theme(const Glib::RefPtr<Gtk::IconTheme> &icon_theme,
-                                                 const std::string &app_id) {
-  if (icon_theme->lookup_icon(app_id, 24)) return app_id;
-
-  return "";
-}
-
-bool Task::image_load_icon(Gtk::Image &image, const Glib::RefPtr<Gtk::IconTheme> &icon_theme,
-                           Glib::RefPtr<Gio::DesktopAppInfo> app_info, int size) {
-  std::string ret_icon_name = "unknown";
-  if (app_info) {
-    std::string icon_name =
-        get_icon_name_from_icon_theme(icon_theme, app_info->get_startup_wm_class());
-    if (!icon_name.empty()) {
-      ret_icon_name = icon_name;
-    } else {
-      if (app_info->get_icon()) {
-        ret_icon_name = app_info->get_icon()->to_string();
-      }
-    }
-  }
-
-  Glib::RefPtr<Gdk::Pixbuf> pixbuf;
-  auto scaled_icon_size = size * image.get_scale_factor();
-
-  try {
-    pixbuf = icon_theme->load_icon(ret_icon_name, scaled_icon_size, Gtk::ICON_LOOKUP_FORCE_SIZE);
-    spdlog::debug("{} Loaded icon '{}'", repr(), ret_icon_name);
-  } catch (...) {
-    if (Glib::file_test(ret_icon_name, Glib::FILE_TEST_EXISTS)) {
-      pixbuf = load_icon_from_file(ret_icon_name, scaled_icon_size);
-      spdlog::debug("{} Loaded icon from file '{}'", repr(), ret_icon_name);
-    } else {
-      try {
-        pixbuf = DefaultGtkIconThemeWrapper::load_icon(
-            "image-missing", scaled_icon_size, Gtk::IconLookupFlags::ICON_LOOKUP_FORCE_SIZE);
-        spdlog::debug("{} Loaded icon from resource", repr());
-      } catch (...) {
-        pixbuf = {};
-        spdlog::debug("{} Unable to load icon.", repr());
-      }
-    }
-  }
-
-  if (pixbuf) {
-    if (pixbuf->get_width() != scaled_icon_size) {
-      int width = scaled_icon_size * pixbuf->get_width() / pixbuf->get_height();
-      pixbuf = pixbuf->scale_simple(width, scaled_icon_size, Gdk::InterpType::INTERP_BILINEAR);
-    }
-    auto surface = Gdk::Cairo::create_surface_from_pixbuf(pixbuf, image.get_scale_factor(),
-                                                          image.get_window());
-    image.set(surface);
-    return true;
-  }
-
-  return false;
-}
-
 /* Task class implementation */
 uint32_t Task::global_id = 0;
 
@@ -299,16 +111,11 @@ Task::Task(const waybar::Bar &bar, const Json::Value &config, Taskbar *tbar,
       with_name_ = true;
     }
 
-    auto icon_pos = format.find("{icon}");
+    auto parts = split(format, "{icon}", 1);
-    if (icon_pos == 0) {
+    format_before_ = parts[0];
+    if (parts.size() > 1) {
       with_icon_ = true;
-      format_after_ = format.substr(6);
+      format_after_ = parts[1];
-    } 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 */
@@ -395,7 +202,7 @@ void Task::handle_title(const char *title) {
     return;
   }
 
-  set_app_info_from_app_id_list(title_);
+  app_info_ = IconLoader::get_app_info_from_app_id_list(title_);
   name_ = app_info_ ? app_info_->get_display_name() : title;
 
   if (!with_icon_) {
@@ -403,15 +210,7 @@ void Task::handle_title(const char *title) {
   }
 
   int icon_size = config_["icon-size"].isInt() ? config_["icon-size"].asInt() : 16;
-  bool found = false;
+  if (tbar_->icon_loader().image_load_icon(icon_, app_info_, icon_size))
-  for (auto &icon_theme : tbar_->icon_themes()) {
-    if (image_load_icon(icon_, icon_theme, app_info_, icon_size)) {
-      found = true;
-      break;
-    }
-  }
-
-  if (found)
     icon_.show();
   else
     spdlog::debug("Couldn't find icon for {}", title_);
@@ -460,7 +259,7 @@ void Task::handle_app_id(const char *app_id) {
     return;
   }
 
-  set_app_info_from_app_id_list(app_id_);
+  app_info_ = IconLoader::get_app_info_from_app_id_list(app_id_);
   name_ = app_info_ ? app_info_->get_display_name() : app_id;
 
   if (!with_icon_) {
@@ -468,15 +267,7 @@ void Task::handle_app_id(const char *app_id) {
   }
 
   int icon_size = config_["icon-size"].isInt() ? config_["icon-size"].asInt() : 16;
-  bool found = false;
+  if (tbar_->icon_loader().image_load_icon(icon_, app_info_, icon_size))
-  for (auto &icon_theme : tbar_->icon_themes()) {
-    if (image_load_icon(icon_, icon_theme, app_info_, icon_size)) {
-      found = true;
-      break;
-    }
-  }
-
-  if (found)
     icon_.show();
   else
     spdlog::debug("Couldn't find icon for {}", app_id_);
@@ -802,22 +593,10 @@ Taskbar::Taskbar(const std::string &id, const waybar::Bar &bar, const Json::Valu
   /* Get the configured icon theme if specified */
   if (config_["icon-theme"].isArray()) {
     for (auto &c : config_["icon-theme"]) {
-      auto it_name = c.asString();
+      icon_loader_.add_custom_icon_theme(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();
+    icon_loader_.add_custom_icon_theme(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);
   }
 
   // Load ignore-list
@@ -836,8 +615,6 @@ Taskbar::Taskbar(const std::string &id, const waybar::Bar &bar, const Json::Valu
     }
   }
 
-  icon_themes_.push_back(Gtk::IconTheme::get_default());
-
   for (auto &t : tasks_) {
     t->handle_app_id(t->app_id().c_str());
   }
@@ -972,9 +749,7 @@ bool Taskbar::all_outputs() const {
   return config_["all-outputs"].isBool() && config_["all-outputs"].asBool();
 }
 
-const std::vector<Glib::RefPtr<Gtk::IconTheme>> &Taskbar::icon_themes() const {
+const IconLoader &Taskbar::icon_loader() const { return icon_loader_; }
-  return icon_themes_;
-}
 
 const std::unordered_set<std::string> &Taskbar::ignore_list() const { return ignore_list_; }
 

src/util/icon_loader.cpp

@@ -0,0 +1,207 @@
+#include "util/icon_loader.hpp"
+
+#include "util/string.hpp"
+
+std::vector<std::string> IconLoader::search_prefix() {
+  std::vector<std::string> prefixes = {""};
+
+  std::string home_dir = std::getenv("HOME");
+  prefixes.push_back(home_dir + "/.local/share/");
+
+  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;
+    size_t 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);
+  }
+
+  for (auto &p : prefixes) spdlog::debug("Using 'desktop' search path prefix: {}", p);
+
+  return prefixes;
+}
+
+Glib::RefPtr<Gio::DesktopAppInfo> IconLoader::get_app_info_by_name(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"};
+
+  for (auto const &prefix : prefixes) {
+    for (auto const &folder : app_folders) {
+      for (auto const &suffix : suffixes) {
+        auto app_info_ =
+            Gio::DesktopAppInfo::create_from_filename(prefix + folder + app_id + suffix);
+        if (!app_info_) {
+          continue;
+        }
+
+        return app_info_;
+      }
+    }
+  }
+
+  return {};
+}
+
+Glib::RefPtr<Gio::DesktopAppInfo> IconLoader::get_desktop_app_info(const std::string &app_id) {
+  auto app_info = get_app_info_by_name(app_id);
+  if (app_info) {
+    return app_info;
+  }
+
+  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++) {
+      if (desktop_file == "") {
+        desktop_file = desktop_list[0][i];
+      } else {
+        auto tmp_info = Gio::DesktopAppInfo::create(desktop_list[0][i]);
+        if (!tmp_info)
+          // see https://github.com/Alexays/Waybar/issues/1446
+          continue;
+
+        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_app_info_by_name(desktop_file);
+}
+
+Glib::RefPtr<Gdk::Pixbuf> IconLoader::load_icon_from_file(std::string const &icon_path, int size) {
+  try {
+    auto pb = Gdk::Pixbuf::create_from_file(icon_path, size, size);
+    return pb;
+  } catch (...) {
+    return {};
+  }
+}
+
+std::string IconLoader::get_icon_name_from_icon_theme(
+    const Glib::RefPtr<Gtk::IconTheme> &icon_theme, const std::string &app_id) {
+  if (icon_theme->lookup_icon(app_id, 24)) return app_id;
+
+  return "";
+}
+
+bool IconLoader::image_load_icon(Gtk::Image &image, const Glib::RefPtr<Gtk::IconTheme> &icon_theme,
+                                 Glib::RefPtr<Gio::DesktopAppInfo> app_info, int size) {
+  std::string ret_icon_name = "unknown";
+  if (app_info) {
+    std::string icon_name =
+        get_icon_name_from_icon_theme(icon_theme, app_info->get_startup_wm_class());
+    if (!icon_name.empty()) {
+      ret_icon_name = icon_name;
+    } else {
+      if (app_info->get_icon()) {
+        ret_icon_name = app_info->get_icon()->to_string();
+      }
+    }
+  }
+
+  Glib::RefPtr<Gdk::Pixbuf> pixbuf;
+  auto scaled_icon_size = size * image.get_scale_factor();
+
+  try {
+    pixbuf = icon_theme->load_icon(ret_icon_name, scaled_icon_size, Gtk::ICON_LOOKUP_FORCE_SIZE);
+  } catch (...) {
+    if (Glib::file_test(ret_icon_name, Glib::FILE_TEST_EXISTS)) {
+      pixbuf = load_icon_from_file(ret_icon_name, scaled_icon_size);
+    } else {
+      try {
+        pixbuf = DefaultGtkIconThemeWrapper::load_icon(
+            "image-missing", scaled_icon_size, Gtk::IconLookupFlags::ICON_LOOKUP_FORCE_SIZE);
+      } catch (...) {
+        pixbuf = {};
+      }
+    }
+  }
+
+  if (pixbuf) {
+    if (pixbuf->get_width() != scaled_icon_size) {
+      int width = scaled_icon_size * pixbuf->get_width() / pixbuf->get_height();
+      pixbuf = pixbuf->scale_simple(width, scaled_icon_size, Gdk::InterpType::INTERP_BILINEAR);
+    }
+    auto surface = Gdk::Cairo::create_surface_from_pixbuf(pixbuf, image.get_scale_factor(),
+                                                          image.get_window());
+    image.set(surface);
+    return true;
+  }
+
+  return false;
+}
+
+void IconLoader::add_custom_icon_theme(const std::string &theme_name) {
+  auto icon_theme = Gtk::IconTheme::create();
+  icon_theme->set_custom_theme(theme_name);
+  custom_icon_themes_.push_back(icon_theme);
+  spdlog::debug("Use custom icon theme: {}", theme_name);
+}
+
+bool IconLoader::image_load_icon(Gtk::Image &image, Glib::RefPtr<Gio::DesktopAppInfo> app_info,
+                                 int size) const {
+  for (auto &icon_theme : custom_icon_themes_) {
+    if (image_load_icon(image, icon_theme, app_info, size)) {
+      return true;
+    }
+  }
+  return image_load_icon(image, default_icon_theme_, app_info, size);
+}
+
+Glib::RefPtr<Gio::DesktopAppInfo> IconLoader::get_app_info_from_app_id_list(
+    const std::string &app_id_list) {
+  std::string app_id;
+  std::istringstream stream(app_id_list);
+  Glib::RefPtr<Gio::DesktopAppInfo> app_info_;
+
+  /* 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) {
+    app_info_ = get_desktop_app_info(app_id);
+    if (app_info_) {
+      return app_info_;
+    }
+
+    auto lower_app_id = app_id;
+    std::ranges::transform(lower_app_id, lower_app_id.begin(),
+                           [](char c) { return std::tolower(c); });
+    app_info_ = get_desktop_app_info(lower_app_id);
+    if (app_info_) {
+      return app_info_;
+    }
+
+    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());
+    app_info_ = get_desktop_app_info(app_name);
+    if (app_info_) {
+      return app_info_;
+    }
+
+    start = app_id.find("-");
+    app_name = app_id.substr(0, start);
+    app_info_ = get_desktop_app_info(app_name);
+  }
+  return app_info_;
+}