status indicator sets window icon

src/status_indicator.cpp

@@ -0,0 +1,69 @@
+#include "./status_indicator.hpp"
+
+#include <solanaceae/contact/components.hpp>
+#include <solanaceae/message3/components.hpp>
+
+#include "./icon_generator.hpp"
+
+#include <memory>
+
+void StatusIndicator::updateState(State state) {
+	if (_state == state) {
+		return;
+	}
+
+	_state = state;
+
+	std::unique_ptr<SDL_Surface, decltype(&SDL_DestroySurface)> surf{nullptr, &SDL_DestroySurface};
+
+	switch (state) {
+		case State::base:
+			surf = {IconGenerator::base(), &SDL_DestroySurface};
+			break;
+		case State::unread:
+			surf = {IconGenerator::colorIndicator(1.f, .5f, 0.f, 1.f), &SDL_DestroySurface};
+			break;
+		case State::none:
+			break;
+	}
+
+	SDL_SetWindowIcon(_main_window, surf.get());
+}
+
+StatusIndicator::StatusIndicator(
+	RegistryMessageModelI& rmm,
+	Contact3Registry& cr,
+	SDL_Window* main_window
+) :
+	_rmm(rmm),
+	_cr(cr),
+	_main_window(main_window)
+{
+	// start off with base icon
+	updateState(State::base);
+}
+
+void StatusIndicator::render(float delta) {
+	_cooldown -= delta;
+	if (_cooldown <= 0.f) {
+		_cooldown = 1.f; // once a second
+
+		bool has_unread = false;
+		for (const auto& c : _cr.view<Contact::Components::TagBig>()) {
+			// maybe cache mm?
+			if (const auto* mm = _rmm.get(c); mm != nullptr) {
+				if (const auto* unread_storage = mm->storage<Message::Components::TagUnread>(); unread_storage != nullptr && !unread_storage->empty()) {
+					has_unread = true;
+					break;
+				}
+			}
+		}
+
+		if (has_unread) {
+			updateState(State::unread);
+		} else {
+			updateState(State::base);
+		}
+	}
+}
+