From 74bb9cd27242b9320f99ff4d2b50c3051576cc14 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 8 Feb 2022 16:53:51 +0800
Subject: ...

---
 include/cru/ui/host/LayoutPaintCycler.h | 40 +++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 include/cru/ui/host/LayoutPaintCycler.h

(limited to 'include/cru/ui/host/LayoutPaintCycler.h')

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
-- 
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