1 files changed, 35 insertions, 0 deletions
diff --git a/src/ui/host/LayoutPaintCycler.cpp b/src/ui/host/LayoutPaintCycler.cpp
new file mode 100644
index 00000000..9b319da4
--- /dev/null
+++ b/src/ui/host/LayoutPaintCycler.cpp
@@ -0,0 +1,35 @@
+#include "cru/ui/host/LayoutPaintCycler.hpp"
+#include <chrono>
+
+#include "../Helper.hpp"
+#include "cru/ui/Base.hpp"
+#include "cru/ui/host/WindowHost.hpp"
+
+namespace cru::ui::host {
+LayoutPaintCycler::LayoutPaintCycler(WindowHost* host) : host_(host) {
+  timer_canceler_ = GetUiApplication()->SetInterval(
+      std::chrono::duration_cast<std::chrono::milliseconds>(
+          this->cycle_threshold_),
+      [this] { OnCycle(); });
+}
+
+LayoutPaintCycler::~LayoutPaintCycler() = default;
+
+void LayoutPaintCycler::InvalidateLayout() { layout_dirty_ = true; }
+
+void LayoutPaintCycler::InvalidatePaint() { paint_dirty_ = true; }
+
+void LayoutPaintCycler::OnCycle() {
+  last_cycle_time_ = std::chrono::steady_clock::now();
+  if (layout_dirty_) {
+    host_->Relayout();
+    host_->Repaint();
+  } else {
+    if (paint_dirty_) {
+      host_->Repaint();
+    }
+  }
+  layout_dirty_ = true;
+  paint_dirty_ = true;
+}
+}  // namespace cru::ui::host