...

1 files changed, 40 insertions, 0 deletions

diff --git a/include/cru/ui/host/LayoutPaintCycler.h b/include/cru/ui/host/LayoutPaintCycler.h
new file mode 100644
index 00000000..e95ed81d
--- /dev/null
+++ b/include/cru/ui/host/LayoutPaintCycler.h
@@ -0,0 +1,40 @@
+#pragma once
+#include "../Base.h"
+
+#include "cru/platform/gui/TimerHelper.h"
+#include "cru/platform/gui/UiApplication.h"
+
+#include <chrono>
+
+namespace cru::ui::host {
+class CRU_UI_API LayoutPaintCycler {
+ public:
+  explicit LayoutPaintCycler(WindowHost* host);
+
+  CRU_DELETE_COPY(LayoutPaintCycler)
+  CRU_DELETE_MOVE(LayoutPaintCycler)
+
+  ~LayoutPaintCycler();
+
+ public:
+  void InvalidateLayout();
+  void InvalidatePaint();
+
+  bool IsLayoutDirty() { return layout_dirty_; }
+
+ private:
+  void OnCycle();
+
+ private:
+  WindowHost* host_;
+
+  platform::gui::TimerAutoCanceler timer_canceler_;
+
+  bool layout_dirty_ = true;
+  bool paint_dirty_ = true;
+
+  std::chrono::steady_clock::time_point last_cycle_time_;
+  std::chrono::steady_clock::duration cycle_threshold_ =
+      std::chrono::milliseconds(1000) / 144;
+};
+}  // namespace cru::ui::host