Fix tab bars appearing on all workspaces

src/Hy3Layout.cpp

@@ -586,6 +586,7 @@ void Hy3Node::updateTabBar() {
 			FindTopWindowInNodeResult result;
 			findTopWindowInNode(*this, result);
 			group.tab_bar->target_window = result.window;
+			if (result.window != nullptr) group.tab_bar->workspace_id = result.window->m_iWorkspaceID;
 		} else if (group.tab_bar != nullptr) {
 			group.tab_bar->bar.beginDestroy();
 			group.tab_bar = nullptr;

src/TabGroup.cpp

@@ -311,16 +311,28 @@ void Hy3TabGroup::renderTabBar() {
 	static const auto* padding = &HyprlandAPI::getConfigValue(PHANDLE, "general:gaps_in")->intValue;
 
 	auto* monitor = g_pHyprOpenGL->m_RenderData.pMonitor;
+	auto* workspace = g_pCompositor->getWorkspaceByID(this->workspace_id);
 	auto scale = monitor->scale;
 
+	auto monitor_size = monitor->vecSize;
 	auto pos = this->pos.vec() - monitor->vecPosition;
 	auto size = this->size.vec();
 	pos.y += (this->bar.vertical_pos.fl() * size.y) * (*enter_from_top ? -1 : 1);
 
+	if (workspace != nullptr) {
+		pos = pos + workspace->m_vRenderOffset.vec();
+	}
+
 	auto scaled_pos = Vector2D(std::round(pos.x * scale), std::round(pos.y * scale));
 	auto scaled_size = Vector2D(std::round(size.x * scale), std::round(size.y * scale));
 	wlr_box box = { scaled_pos.x, scaled_pos.y, scaled_size.x, scaled_size.y };
 
+	if (scaled_pos.x > monitor_size.x
+			|| scaled_pos.y > monitor_size.y
+			|| scaled_pos.x + scaled_size.x < 0
+			|| scaled_pos.y + scaled_size.y < 0)
+		return;
+
 	if (!this->bar.damaged) {
 		pixman_region32 damage;
 		pixman_region32_init(&damage);

src/TabGroup.hpp

@@ -63,6 +63,7 @@ private:
 class Hy3TabGroup {
 public:
 	CWindow* target_window = nullptr;
+	int workspace_id = -1;
 	Hy3TabBar bar;
 	CAnimatedVariable pos;
 	CAnimatedVariable size;