From 2a9118d137b411b3871073bb6ab18ba98c225d34 Mon Sep 17 00:00:00 2001
From: Yuqian Yang <crupest@crupest.life>
Date: Thu, 16 Oct 2025 23:57:23 +0800
Subject: Bootstrap sdl.

---
 include/cru/platform/gui/sdl/Base.h          |  24 +++++++
 include/cru/platform/gui/sdl/UiApplication.h |  69 ++++++++++++++++++
 include/cru/platform/gui/sdl/Window.h        | 104 +++++++++++++++++++++++++++
 3 files changed, 197 insertions(+)
 create mode 100644 include/cru/platform/gui/sdl/Base.h
 create mode 100644 include/cru/platform/gui/sdl/UiApplication.h
 create mode 100644 include/cru/platform/gui/sdl/Window.h

(limited to 'include/cru/platform/gui/sdl')

diff --git a/include/cru/platform/gui/sdl/Base.h b/include/cru/platform/gui/sdl/Base.h
new file mode 100644
index 00000000..9dd2eff6
--- /dev/null
+++ b/include/cru/platform/gui/sdl/Base.h
@@ -0,0 +1,24 @@
+
+#pragma once
+
+#include <cru/base/Exception.h>
+
+#include "../../Resource.h"
+
+namespace cru::platform::gui::sdl {
+class SdlResource : public Object, public virtual IPlatformResource {
+ public:
+  static constexpr const char16_t* kPlatformId = u"SDL";
+
+ protected:
+  SdlResource() = default;
+
+ public:
+  String GetPlatformId() const final { return String(kPlatformId); }
+};
+
+class SdlException : public PlatformException {
+ public:
+  using PlatformException::PlatformException;
+};
+}  // namespace cru::platform::gui::xcb
diff --git a/include/cru/platform/gui/sdl/UiApplication.h b/include/cru/platform/gui/sdl/UiApplication.h
new file mode 100644
index 00000000..f47e26bb
--- /dev/null
+++ b/include/cru/platform/gui/sdl/UiApplication.h
@@ -0,0 +1,69 @@
+
+#pragma once
+#include "../UiApplication.h"
+#include "Base.h"
+
+#include <cru/base/platform/unix/EventLoop.h>
+#include <cru/platform/graphics/cairo/CairoGraphicsFactory.h>
+
+#include <functional>
+
+namespace cru::platform::gui::sdl {
+class SdlWindow;
+
+class SdlUiApplication : public SdlResource, public virtual IUiApplication {
+  friend SdlWindow;
+
+ public:
+  explicit SdlUiApplication(
+      graphics::cairo::CairoGraphicsFactory* cairo_factory = nullptr);
+  ~SdlUiApplication();
+
+ public:
+  graphics::cairo::CairoGraphicsFactory* GetCairoFactory();
+
+ public:
+  int Run() override;
+
+  void RequestQuit(int quit_code) override;
+
+  void AddOnQuitHandler(std::function<void()> handler) override;
+
+  bool IsQuitOnAllWindowClosed() override;
+  void SetQuitOnAllWindowClosed(bool quit_on_all_window_closed) override;
+
+  long long SetImmediate(std::function<void()> action) override;
+  long long SetTimeout(std::chrono::milliseconds milliseconds,
+                       std::function<void()> action) override;
+  long long SetInterval(std::chrono::milliseconds milliseconds,
+                        std::function<void()> action) override;
+  void CancelTimer(long long id) override;
+
+  std::vector<INativeWindow*> GetAllWindow() override;
+
+  INativeWindow* CreateWindow() override;
+
+  cru::platform::graphics::IGraphicsFactory* GetGraphicsFactory() override;
+
+  ICursorManager* GetCursorManager() override;
+
+  IClipboard* GetClipboard() override;
+
+  // If return nullptr, it means the menu is not supported.
+  IMenu* GetApplicationMenu() override;
+
+ private:
+  void RegisterWindow(SdlWindow* window);
+  void UnregisterWindow(SdlWindow* window);
+
+ private:
+  graphics::cairo::CairoGraphicsFactory* cairo_factory_;
+  bool release_cairo_factory_;
+
+  cru::platform::unix::UnixEventLoop event_loop_;
+  std::vector<std::function<void()>> quit_handlers_;
+
+  bool is_quit_on_all_window_closed_;
+  std::vector<SdlWindow*> windows_;
+};
+}  // namespace cru::platform::gui::xcb
diff --git a/include/cru/platform/gui/sdl/Window.h b/include/cru/platform/gui/sdl/Window.h
new file mode 100644
index 00000000..1bcd42bf
--- /dev/null
+++ b/include/cru/platform/gui/sdl/Window.h
@@ -0,0 +1,104 @@
+#pragma once
+#include <cru/base/Base.h>
+#include "../../GraphicsBase.h"
+#include "../Window.h"
+#include "Base.h"
+
+#include <SDL_video.h>
+#include <cstddef>
+#include <optional>
+
+namespace cru::platform::gui::sdl {
+class SdlUiApplication;
+
+class SdlWindow : public SdlResource, public virtual INativeWindow {
+  CRU_DEFINE_CLASS_LOG_TAG("cru::platform::gui::xcb::SdlWindow")
+
+  friend SdlUiApplication;
+
+ public:
+  explicit SdlWindow(SdlUiApplication* application);
+  ~SdlWindow() override;
+
+  bool IsCreated() override;
+  void Close() override;
+
+  INativeWindow* GetParent() override;
+  void SetParent(INativeWindow* parent) override;
+
+  WindowStyleFlag GetStyleFlag() override;
+  void SetStyleFlag(WindowStyleFlag flag) override;
+
+  String GetTitle() override;
+  void SetTitle(String title) override;
+
+  WindowVisibilityType GetVisibility() override;
+  void SetVisibility(WindowVisibilityType visibility) override;
+
+  Size GetClientSize() override;
+  void SetClientSize(const Size& size) override;
+
+  Rect GetClientRect() override;
+  void SetClientRect(const Rect& rect) override;
+
+  Rect GetWindowRect() override;
+  void SetWindowRect(const Rect& rect) override;
+
+  bool RequestFocus() override;
+
+  Point GetMousePosition() override;
+
+  bool CaptureMouse() override;
+  bool ReleaseMouse() override;
+
+  void SetCursor(std::shared_ptr<ICursor> cursor) override;
+
+  void SetToForeground() override;
+
+  void RequestRepaint() override;
+
+  std::unique_ptr<graphics::IPainter> BeginPaint() override;
+
+  IEvent<std::nullptr_t>* CreateEvent() override;
+  IEvent<std::nullptr_t>* DestroyEvent() override;
+  IEvent<std::nullptr_t>* PaintEvent() override;
+
+  IEvent<WindowVisibilityType>* VisibilityChangeEvent() override;
+  IEvent<Size>* ResizeEvent() override;
+  IEvent<FocusChangeType>* FocusEvent() override;
+
+  IEvent<MouseEnterLeaveType>* MouseEnterLeaveEvent() override;
+  IEvent<Point>* MouseMoveEvent() override;
+  IEvent<NativeMouseButtonEventArgs>* MouseDownEvent() override;
+  IEvent<NativeMouseButtonEventArgs>* MouseUpEvent() override;
+  IEvent<NativeMouseWheelEventArgs>* MouseWheelEvent() override;
+  IEvent<NativeKeyEventArgs>* KeyDownEvent() override;
+  IEvent<NativeKeyEventArgs>* KeyUpEvent() override;
+
+  IInputMethodContext* GetInputMethodContext() override;
+
+ public:
+  std::optional<SDL_Window*> GetSdlWindow();
+  SdlUiApplication* GetSdlUiApplication();
+
+ private:
+  SdlUiApplication* application_;
+  std::optional<SDL_Window*> sdl_window_;
+  SdlWindow* parent_;
+  WindowStyleFlag style_;
+
+  Event<std::nullptr_t> create_event_;
+  Event<std::nullptr_t> destroy_event_;
+  Event<std::nullptr_t> paint_event_;
+  Event<WindowVisibilityType> visibility_change_event_;
+  Event<Size> resize_event_;
+  Event<FocusChangeType> focus_event_;
+  Event<MouseEnterLeaveType> mouse_enter_leave_event_;
+  Event<Point> mouse_move_event_;
+  Event<NativeMouseButtonEventArgs> mouse_down_event_;
+  Event<NativeMouseButtonEventArgs> mouse_up_event_;
+  Event<NativeMouseWheelEventArgs> mouse_wheel_event_;
+  Event<NativeKeyEventArgs> key_down_event_;
+  Event<NativeKeyEventArgs> key_up_event_;
+};
+}  // namespace cru::platform::gui::xcb
-- 
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