fix(sni): render attention and overlay tray icon assets

Load attention and overlay pixmaps from item properties, watch the
corresponding update signals, and prefer attention artwork while an item is in
NeedsAttention state.

When an item only exports an attention movie asset, fall back to loading that
asset as a static pixbuf so the tray still shows the alert state.

Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

include/modules/sni/item.hpp

@@ -48,7 +48,9 @@ class Item : public sigc::trackable {
   Glib::RefPtr<Gdk::Pixbuf> icon_pixmap;
   Glib::RefPtr<Gtk::IconTheme> icon_theme;
   std::string overlay_icon_name;
+  Glib::RefPtr<Gdk::Pixbuf> overlay_icon_pixmap;
   std::string attention_icon_name;
+  Glib::RefPtr<Gdk::Pixbuf> attention_icon_pixmap;
   std::string attention_movie_name;
   std::string icon_theme_path;
   std::string menu;
@@ -76,8 +78,13 @@ class Item : public sigc::trackable {
                 const Glib::VariantContainerBase& arguments);
 
   void updateImage();
-  Glib::RefPtr<Gdk::Pixbuf> extractPixBuf(GVariant* variant);
+  static Glib::RefPtr<Gdk::Pixbuf> extractPixBuf(GVariant* variant);
   Glib::RefPtr<Gdk::Pixbuf> getIconPixbuf();
+  Glib::RefPtr<Gdk::Pixbuf> getAttentionIconPixbuf();
+  Glib::RefPtr<Gdk::Pixbuf> getOverlayIconPixbuf();
+  Glib::RefPtr<Gdk::Pixbuf> loadIconFromNameOrFile(const std::string& name, bool log_failure);
+  static Glib::RefPtr<Gdk::Pixbuf> overlayPixbufs(const Glib::RefPtr<Gdk::Pixbuf>&,
+                                                  const Glib::RefPtr<Gdk::Pixbuf>&);
   Glib::RefPtr<Gdk::Pixbuf> getIconByName(const std::string& name, int size);
   double getScaledIconSize();
   static void onMenuDestroyed(Item* self, GObject* old_menu_pointer);

src/modules/sni/item.cpp

@@ -5,6 +5,7 @@
 #include <gtkmm/tooltip.h>
 #include <spdlog/spdlog.h>
 
+#include <algorithm>
 #include <filesystem>
 #include <fstream>
 #include <map>
@@ -195,11 +196,11 @@ void Item::setProperty(const Glib::ustring& name, Glib::VariantBase& value) {
     } else if (name == "OverlayIconName") {
       overlay_icon_name = get_variant<std::string>(value);
     } else if (name == "OverlayIconPixmap") {
-      // TODO: overlay_icon_pixmap
+      overlay_icon_pixmap = extractPixBuf(value.gobj());
     } else if (name == "AttentionIconName") {
       attention_icon_name = get_variant<std::string>(value);
     } else if (name == "AttentionIconPixmap") {
-      // TODO: attention_icon_pixmap
+      attention_icon_pixmap = extractPixBuf(value.gobj());
     } else if (name == "AttentionMovieName") {
       attention_movie_name = get_variant<std::string>(value);
     } else if (name == "ToolTip") {
@@ -315,8 +316,8 @@ void Item::processUpdatedProperties(Glib::RefPtr<Gio::AsyncResult>& _result) {
 static const std::map<std::string_view, std::set<std::string_view>> signal2props = {
     {"NewTitle", {"Title"}},
     {"NewIcon", {"IconName", "IconPixmap"}},
-    // {"NewAttentionIcon", {"AttentionIconName", "AttentionIconPixmap", "AttentionMovieName"}},
-    // {"NewOverlayIcon", {"OverlayIconName", "OverlayIconPixmap"}},
+    {"NewAttentionIcon", {"AttentionIconName", "AttentionIconPixmap", "AttentionMovieName"}},
+    {"NewOverlayIcon", {"OverlayIconName", "OverlayIconPixmap"}},
     {"NewIconThemePath", {"IconThemePath"}},
     {"NewToolTip", {"ToolTip"}},
     {"NewStatus", {"Status"}},
@@ -406,36 +407,24 @@ void Item::updateImage() {
     pixbuf = pixbuf->scale_simple(width, scaled_icon_size, Gdk::InterpType::INTERP_BILINEAR);
   }
 
+  pixbuf = overlayPixbufs(pixbuf, getOverlayIconPixbuf());
+
   auto surface =
       Gdk::Cairo::create_surface_from_pixbuf(pixbuf, image.get_scale_factor(), image.get_window());
   image.set(surface);
 }
 
 Glib::RefPtr<Gdk::Pixbuf> Item::getIconPixbuf() {
-  if (!icon_name.empty()) {
-    try {
-      std::ifstream temp(icon_name);
-      if (temp.is_open()) {
-        return Gdk::Pixbuf::create_from_file(icon_name);
-      }
-    } catch (Glib::Error& e) {
-      // Ignore because we want to also try different methods of getting an icon.
-      //
-      // But a warning is logged, as the file apparently exists, but there was
-      // a failure in creating a pixbuf out of it.
-
-      spdlog::warn("Item '{}': {}", id, static_cast<std::string>(e.what()));
-    }
-
-    try {
-      // Will throw if it can not find an icon.
-      return getIconByName(icon_name, getScaledIconSize());
-    } catch (Glib::Error& e) {
-      spdlog::trace("Item '{}': {}", id, static_cast<std::string>(e.what()));
+  if (status_ == "needsattention") {
+    if (auto attention_pixbuf = getAttentionIconPixbuf()) {
+      return attention_pixbuf;
     }
   }
 
-  // Return the pixmap only if an icon for the given name could not be found.
+  if (auto pixbuf = loadIconFromNameOrFile(icon_name, true)) {
+    return pixbuf;
+  }
+
   if (icon_pixmap) {
     return icon_pixmap;
   }
@@ -450,6 +439,77 @@ Glib::RefPtr<Gdk::Pixbuf> Item::getIconPixbuf() {
   return getIconByName("image-missing", getScaledIconSize());
 }
 
+Glib::RefPtr<Gdk::Pixbuf> Item::getAttentionIconPixbuf() {
+  if (auto pixbuf = loadIconFromNameOrFile(attention_icon_name, false)) {
+    return pixbuf;
+  }
+  if (auto pixbuf = loadIconFromNameOrFile(attention_movie_name, false)) {
+    return pixbuf;
+  }
+  return attention_icon_pixmap;
+}
+
+Glib::RefPtr<Gdk::Pixbuf> Item::getOverlayIconPixbuf() {
+  if (auto pixbuf = loadIconFromNameOrFile(overlay_icon_name, false)) {
+    return pixbuf;
+  }
+  return overlay_icon_pixmap;
+}
+
+Glib::RefPtr<Gdk::Pixbuf> Item::loadIconFromNameOrFile(const std::string& name, bool log_failure) {
+  if (name.empty()) {
+    return {};
+  }
+
+  try {
+    std::ifstream temp(name);
+    if (temp.is_open()) {
+      return Gdk::Pixbuf::create_from_file(name);
+    }
+  } catch (const Glib::Error& e) {
+    if (log_failure) {
+      spdlog::warn("Item '{}': {}", id, static_cast<std::string>(e.what()));
+    }
+  }
+
+  try {
+    return getIconByName(name, getScaledIconSize());
+  } catch (const Glib::Error& e) {
+    if (log_failure) {
+      spdlog::trace("Item '{}': {}", id, static_cast<std::string>(e.what()));
+    }
+  }
+
+  return {};
+}
+
+Glib::RefPtr<Gdk::Pixbuf> Item::overlayPixbufs(const Glib::RefPtr<Gdk::Pixbuf>& base,
+                                               const Glib::RefPtr<Gdk::Pixbuf>& overlay) {
+  if (!base || !overlay) {
+    return base;
+  }
+
+  auto composed = base->copy();
+  if (!composed) {
+    return base;
+  }
+
+  int overlay_target_size =
+      std::max(1, std::min(composed->get_width(), composed->get_height()) / 2);
+  auto scaled_overlay = overlay->scale_simple(overlay_target_size, overlay_target_size,
+                                              Gdk::InterpType::INTERP_BILINEAR);
+  if (!scaled_overlay) {
+    return composed;
+  }
+
+  int dest_x = std::max(0, composed->get_width() - scaled_overlay->get_width());
+  int dest_y = std::max(0, composed->get_height() - scaled_overlay->get_height());
+  scaled_overlay->composite(composed, dest_x, dest_y, scaled_overlay->get_width(),
+                            scaled_overlay->get_height(), dest_x, dest_y, 1.0, 1.0,
+                            Gdk::InterpType::INTERP_BILINEAR, 255);
+  return composed;
+}
+
 Glib::RefPtr<Gdk::Pixbuf> Item::getIconByName(const std::string& name, int request_size) {
   if (!icon_theme_path.empty()) {
     auto icon_info = icon_theme->lookup_icon(name.c_str(), request_size,