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#pragma once
#include "Base.hpp"
#include "Keyboard.hpp"
#include "cru/common/Event.hpp"
#include <string_view>
namespace cru::platform::gui {
enum class FocusChangeType { Gain, Lost };
enum class MouseEnterLeaveType { Enter, Leave };
struct NativeMouseButtonEventArgs {
MouseButton button;
Point point;
KeyModifier modifier;
};
struct NativeMouseWheelEventArgs {
// Positive means down. Negative means up.
float delta;
Point point;
KeyModifier modifier;
};
struct NativeKeyEventArgs {
KeyCode key;
KeyModifier modifier;
};
// Represents a native window, which exposes some low-level events and
// operations.
struct INativeWindow : virtual IPlatformResource {
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;
virtual bool RequestFocus() = 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<graphics::IPainter> BeginPaint() = 0;
// Don't use this instance after receive this event.
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<NativeMouseWheelEventArgs>* MouseWheelEvent() = 0;
virtual IEvent<NativeKeyEventArgs>* KeyDownEvent() = 0;
virtual IEvent<NativeKeyEventArgs>* KeyUpEvent() = 0;
virtual IInputMethodContext* GetInputMethodContext() = 0;
};
} // namespace cru::platform::gui
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