mgl_win32_window.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_WIN32_WINDOW_H_1614567872
#define INCGUARD_MGL_WIN32_WINDOW_H_1614567872
 
#include <mgl/mgl_environment.h>
#if defined(MGL_TARGET_WIN32)
 
#include <Windows.h>
#include <mgl/common/mgl_singleton.h>
#include <mgl/event/mgl_event_handle.h>
#include <mgl/stl/mgl_stl_memory.h>
 
namespace MGL::Win32
{
class Window final : public MGL::SharedSingleton<Window>
{
public:
 
    struct Descriptor
    {
        int width{1280};                    
        int height{720};                    
        LPCWSTR windowTitle{L"MGL-App"};    
        LPCWSTR className{nullptr};         
        HICON icon{nullptr};                
        HICON smallIcon{nullptr};           
    };
 
    static STL::unique_ptr<Window> &GetInstanceRef() noexcept;
 
    bool Initialize(HINSTANCE hInstance, int nCmdShow, WNDPROC windowProc, const Descriptor &descriptor) noexcept;
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr HWND GetWindowHandler() noexcept
    {
        return _hWnd;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr int GetWidth() const noexcept
    {
        return _width;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr int GetHeight() const noexcept
    {
        return _height;
    }
 
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr HINSTANCE GetAppInstanceHandle() const noexcept
    {
        return _hInstance;
    }
 
    void SetWindowTitle(const char *title) noexcept;
    bool Resize(int width, int height) noexcept;
    [[nodiscard]] float GetLogicalScaleFactor() const noexcept;
 
    void Update() noexcept;
 
private:
    HINSTANCE _hInstance{nullptr};
    HWND _hWnd{nullptr};
    int _width{0};
    int _height{0};
    float _scaleFactor{1.0f};
};
}   // namespace MGL::Win32
 
#endif  // MGL_TARGET_WIN32
#endif  // INCGUARD_MGL_WIN32_WINDOW_H_1614567872
 
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