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#pragma once
#include "../resource.hpp"
#include "../graph_base.hpp"
#include "basic_types.hpp"
#include "cru/common/event.hpp"
#include "cursor.hpp"
#include "event.hpp"
namespace cru::platform::graph {
struct IPainter;
}
namespace cru::platform::native {
// Represents a native window, which exposes some low-level events and
// operations.
//
// Although you can always retain an instance of this class, the real window
// associated with it might be have already been destroyed by explicitly calling
// Close or closed by the user, which leads to an invalid instance. You can
// check the validity by IsValid. When you call perform native operations on the
// invalid instance, there is no effect.
struct INativeWindow : virtual INativeResource {
// Return if the window is still valid, that is, hasn't been closed or
// destroyed.
virtual bool IsValid() = 0;
// Set if the instance is deleted automatically when the window is destroyed
// by other ways. Default is true.
virtual void SetDeleteThisOnDestroy(bool value) = 0;
virtual void Close() = 0;
virtual INativeWindow* GetParent() = 0;
virtual bool IsVisible() = 0;
virtual void SetVisible(bool is_visible) = 0;
virtual Size GetClientSize() = 0;
virtual void SetClientSize(const Size& size) = 0;
// Get the rect of the window containing frame.
// The lefttop of the rect is relative to screen lefttop.
virtual Rect GetWindowRect() = 0;
// Set the rect of the window containing frame.
// The lefttop of the rect is relative to screen lefttop.
virtual void SetWindowRect(const Rect& rect) = 0;
// Relative to client lefttop.
virtual Point GetMousePosition() = 0;
virtual bool CaptureMouse() = 0;
virtual bool ReleaseMouse() = 0;
virtual void SetCursor(std::shared_ptr<ICursor> cursor) = 0;
virtual void RequestRepaint() = 0;
// Remember to call EndDraw on return value and destroy it.
virtual std::unique_ptr<graph::IPainter> BeginPaint() = 0;
virtual IEvent<std::nullptr_t>* DestroyEvent() = 0;
virtual IEvent<std::nullptr_t>* PaintEvent() = 0;
virtual IEvent<Size>* ResizeEvent() = 0;
virtual IEvent<FocusChangeType>* FocusEvent() = 0;
virtual IEvent<MouseEnterLeaveType>* MouseEnterLeaveEvent() = 0;
virtual IEvent<Point>* MouseMoveEvent() = 0;
virtual IEvent<NativeMouseButtonEventArgs>* MouseDownEvent() = 0;
virtual IEvent<NativeMouseButtonEventArgs>* MouseUpEvent() = 0;
virtual IEvent<int>* KeyDownEvent() = 0;
virtual IEvent<int>* KeyUpEvent() = 0;
};
} // namespace cru::platform::native
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