Add dwl/window module

README.md

@@ -8,7 +8,7 @@
 - Sway (Workspaces, Binding mode, Focused window name)
 - River (Mapping mode, Tags, Focused window name)
 - Hyprland (Window Icons, Workspaces, Focused window name)
-- DWL (Tags) [requires dwl ipc patch](https://github.com/djpohly/dwl/wiki/ipc)
+- DWL (Tags, Focused window name) [requires dwl ipc patch](https://github.com/djpohly/dwl/wiki/ipc)
 - Tray [#21](https://github.com/Alexays/Waybar/issues/21)
 - Local time
 - Battery

include/modules/dwl/window.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <fmt/format.h>
+
+#include <string>
+
+#include "AAppIconLabel.hpp"
+#include "bar.hpp"
+#include "util/json.hpp"
+#include "dwl-ipc-unstable-v2-client-protocol.h"
+
+namespace waybar::modules::dwl {
+
+class Window : public AAppIconLabel, public sigc::trackable {
+ public:
+  Window(const std::string&, const waybar::Bar&, const Json::Value&);
+  virtual ~Window() = default;
+
+  void handle_layout(const uint32_t layout);
+  void handle_title(const char *title);
+  void handle_appid(const char *ppid);
+  void handle_layout_symbol(const char *layout_symbol);
+  void handle_frame();
+
+  struct zdwl_ipc_manager_v2 *status_manager_;
+ private:
+  const Bar& bar_;
+
+  std::string title_;
+  std::string appid_;
+  std::string layout_symbol_;
+  uint32_t layout_;
+
+  struct zdwl_ipc_output_v2 *output_status_;
+};
+
+}  // namespace waybar::modules::dwl

man/waybar-dwl-window.5.scd

@@ -0,0 +1,118 @@
+waybar-dwl-window(5)
+
+# NAME
+
+waybar - dwl window module
+
+# DESCRIPTION
+
+The *window* module displays the title of the currently focused window in DWL
+
+# CONFIGURATION
+
+Addressed by *dwl/window*
+
+*format*: ++
+	typeof: string ++
+	default: {title} ++
+	The format, how information should be displayed.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*min-length*: ++
+	typeof: integer ++
+	The minimum length in characters the module should accept.
+
+*align*: ++
+	typeof: float ++
+	The alignment of the label within the module, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
+*justify*: ++
+	typeof: string ++
+	The alignment of the text within the module's label, allowing options 'left', 'right', or 'center' to define the positioning.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*on-click-middle*: ++
+	typeof: string ++
+	Command to execute when middle-clicked on the module using mousewheel.
+
+*on-click-right*: ++
+	typeof: string ++
+	Command to execute when you right-click on the module.
+
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
+*on-scroll-up*: ++
+	typeof: string ++
+	Command to execute when scrolling up on the module.
+
+*on-scroll-down*: ++
+	typeof: string ++
+	Command to execute when scrolling down on the module.
+
+*smooth-scrolling-threshold*: ++
+	typeof: double ++
+	Threshold to be used when scrolling.
+
+*tooltip*: ++
+	typeof: bool ++
+	default: true ++
+	Option to disable tooltip on hover.
+
+*rewrite*: ++
+	typeof: object ++
+	Rules to rewrite the module format output. See *rewrite rules*.
+
+*icon*: ++
+	typeof: bool ++
+	default: false ++
+	Option to hide the application icon.
+
+*icon-size*: ++
+	typeof: integer ++
+	default: 24 ++
+	Option to change the size of the application icon.
+
+# FORMAT REPLACEMENTS
+
+*{title}*: The title of the focused window.
+
+*{app_id}*: The app_id of the focused window.
+
+*{layout}*: The layout of the focused window.
+
+# REWRITE RULES
+
+*rewrite* is an object where keys are regular expressions and values are
+rewrite rules if the expression matches. Rules may contain references to
+captures of the expression.
+
+Regular expression and replacement follow ECMA-script rules.
+
+If no expression matches, the format output is left unchanged.
+
+Invalid expressions (e.g., mismatched parentheses) are skipped.
+
+# EXAMPLES
+
+```
+"dwl/window": {
+	"format": "{}",
+	"max-length": 50,
+	"rewrite": {
+		"(.*) - Mozilla Firefox": "🌎 $1",
+		"(.*) - zsh": "> [$1]"
+	}
+}
+```

man/waybar.5.scd.in

@@ -310,6 +310,7 @@ A group may hide all but one element, showing them only on mouse hover. In order
 - *waybar-custom(5)*
 - *waybar-disk(5)*
 - *waybar-dwl-tags(5)*
+- *waybar-dwl-window(5)*
 - *waybar-gamemode(5)*
 - *waybar-hyprland-language(5)*
 - *waybar-hyprland-submap(5)*

meson.build

@@ -293,7 +293,9 @@ endif
 if true
     add_project_arguments('-DHAVE_DWL', language: 'cpp')
     src_files += files('src/modules/dwl/tags.cpp')
+    src_files += files('src/modules/dwl/window.cpp')
     man_files += files('man/waybar-dwl-tags.5.scd')
+    man_files += files('man/waybar-dwl-window.5.scd')
 endif
 
 if true

src/factory.cpp

@@ -28,6 +28,7 @@
 #endif
 #ifdef HAVE_DWL
 #include "modules/dwl/tags.hpp"
+#include "modules/dwl/window.hpp"
 #endif
 #ifdef HAVE_HYPRLAND
 #include "modules/hyprland/language.hpp"
@@ -187,6 +188,9 @@ waybar::AModule* waybar::Factory::makeModule(const std::string& name,
     if (ref == "dwl/tags") {
       return new waybar::modules::dwl::Tags(id, bar_, config_[name]);
     }
+    if (ref == "dwl/window") {
+      return new waybar::modules::dwl::Window(id, bar_, config_[name]);
+    }
 #endif
 #ifdef HAVE_HYPRLAND
     if (ref == "hyprland/window") {

src/modules/dwl/tags.cpp

@@ -21,11 +21,11 @@ wl_array tags, layouts;
 
 static uint num_tags = 0;
 
-void toggle_visibility(void *data, zdwl_ipc_output_v2 *zdwl_output_v2) {
+static void toggle_visibility(void *data, zdwl_ipc_output_v2 *zdwl_output_v2) {
   // Intentionally empty
 }
 
-void active(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, uint32_t active) {
+static void active(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, uint32_t active) {
   // Intentionally empty
 }
 
@@ -37,15 +37,15 @@ static void set_tag(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, uint32_t tag
                                                            : num_tags & ~(1 << tag);
 }
 
-void set_layout_symbol(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, const char *layout) {
+static void set_layout_symbol(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, const char *layout) {
   // Intentionally empty
 }
 
-void title(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, const char *title) {
+static void title(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, const char *title) {
   // Intentionally empty
 }
 
-void dwl_frame(void *data, zdwl_ipc_output_v2 *zdwl_output_v2) {
+static void dwl_frame(void *data, zdwl_ipc_output_v2 *zdwl_output_v2) {
   // Intentionally empty
 }
 
@@ -97,6 +97,7 @@ Tags::Tags(const std::string &id, const waybar::Bar &bar, const Json::Value &con
       output_status_{nullptr} {
   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);
 

src/modules/dwl/window.cpp

@@ -0,0 +1,126 @@
+#include "modules/dwl/window.hpp"
+
+#include <gdkmm/pixbuf.h>
+#include <glibmm/fileutils.h>
+#include <glibmm/keyfile.h>
+#include <glibmm/miscutils.h>
+#include <gtkmm/enums.h>
+#include <spdlog/spdlog.h>
+
+#include "client.hpp"
+#include "dwl-ipc-unstable-v2-client-protocol.h"
+
+#include "util/rewrite_string.hpp"
+
+namespace waybar::modules::dwl {
+
+static void toggle_visibility(void *data, zdwl_ipc_output_v2 *zdwl_output_v2) {
+  // Intentionally empty
+}
+
+static void active(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, uint32_t active) {
+  // Intentionally empty
+}
+
+static void set_tag(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, uint32_t tag, uint32_t state,
+                    uint32_t clients, uint32_t focused) {
+  // Intentionally empty
+}
+
+static void set_layout_symbol(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, const char *layout) {
+  static_cast<Window *>(data)->handle_layout_symbol(layout);
+}
+
+static void title(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, const char *title) {
+  static_cast<Window *>(data)->handle_title(title);
+}
+
+static void dwl_frame(void *data, zdwl_ipc_output_v2 *zdwl_output_v2) {
+  static_cast<Window *>(data)->handle_frame();
+}
+
+static void set_layout(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, uint32_t layout) {
+  static_cast<Window *>(data)->handle_layout(layout);
+}
+
+static void appid(void *data, zdwl_ipc_output_v2 *zdwl_output_v2, const char *appid){
+  static_cast<Window *>(data)->handle_appid(appid);
+};
+
+static const zdwl_ipc_output_v2_listener output_status_listener_impl{
+    .toggle_visibility = toggle_visibility,
+    .active = active,
+    .tag = set_tag,
+    .layout = set_layout,
+    .title = title,
+    .appid = appid,
+    .layout_symbol = set_layout_symbol,
+    .frame = dwl_frame,
+};
+
+static void handle_global(void *data, struct wl_registry *registry, uint32_t name,
+                          const char *interface, uint32_t version) {
+  if (std::strcmp(interface, zdwl_ipc_manager_v2_interface.name) == 0) {
+    static_cast<Window *>(data)->status_manager_ = static_cast<struct zdwl_ipc_manager_v2 *>(
+        (zdwl_ipc_manager_v2 *)wl_registry_bind(registry, name, &zdwl_ipc_manager_v2_interface, 1));
+  }
+}
+
+static void handle_global_remove(void *data, struct wl_registry *registry, uint32_t name) {
+  /* Ignore event */
+}
+
+static const wl_registry_listener registry_listener_impl = {.global = handle_global,
+                                                            .global_remove = handle_global_remove};
+
+Window::Window(const std::string& id, const Bar& bar, const Json::Value& config)
+    : AAppIconLabel(config, "window", id, "{}", 0, true), bar_(bar) {
+  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 (!status_manager_) {
+    spdlog::error("dwl_status_manager_v2 not advertised");
+    return;
+  }
+
+  struct wl_output *output = gdk_wayland_monitor_get_wl_output(bar_.output->monitor->gobj());
+  output_status_ = zdwl_ipc_manager_v2_get_output(status_manager_, output);
+  zdwl_ipc_output_v2_add_listener(output_status_, &output_status_listener_impl, this);
+  zdwl_ipc_manager_v2_destroy(status_manager_);
+}
+
+void Window::handle_title(const char *title) {
+  title_ = title;
+}
+
+void Window::handle_appid(const char *appid) {
+  appid_ = appid;
+}
+
+void Window::handle_layout_symbol(const char *layout_symbol) {
+  layout_symbol_ = layout_symbol;
+}
+
+void Window::handle_layout(const uint32_t layout) {
+  layout_ = layout;
+}
+
+void Window::handle_frame() {
+  label_.set_markup(waybar::util::rewriteString(
+      fmt::format(
+        fmt::runtime(format_),
+        fmt::arg("title", title_),
+        fmt::arg("layout", layout_symbol_),
+        fmt::arg("app_id", appid_)),
+      config_["rewrite"]));
+  updateAppIconName(appid_, "");
+  updateAppIcon();
+  if (tooltipEnabled()) {
+    label_.set_tooltip_text(title_);
+  }
+}
+
+}  // namespace waybar::modules::dwl