gfx.h

 
 
#pragma once
 
#include "common.h"
 
namespace ghassanpl::win
{
    GHPL_WIN_DECLARE_HANDLE(HMENU);
    GHPL_WIN_DECLARE_HANDLE(HCURSOR);
    GHPL_WIN_DECLARE_HANDLE(HBRUSH);
    GHPL_WIN_DECLARE_HANDLE(HINSTANCE);
    GHPL_WIN_DECLARE_HANDLE(HGDIOBJ);
    GHPL_WIN_DECLARE_HANDLE(HGLRC);
    GHPL_WIN_DECLARE_HANDLE(HDC);
 
    enum PFDPixelType : BYTE
    {
        PFD_TYPE_RGBA_ = 0,
        PFD_TYPE_COLORINDEX_ = 1,
    };
    static_assert(sizeof(PFDPixelType) == sizeof(BYTE) && alignof(PFDPixelType) == alignof(BYTE));
 
    enum PFDLayerType : BYTE
    {
        PFD_MAIN_PLANE_ = 0,
        PFD_OVERLAY_PLANE_ = 1,
        PFD_UNDERLAY_PLANE_ = BYTE(-1),
    };
    static_assert(sizeof(PFD_UNDERLAY_PLANE_) == sizeof(BYTE) && alignof(PFDLayerType) == alignof(BYTE));
 
    enum PFDFlags
    {
        PFD_DOUBLEBUFFER_ = 0x1,
        PFD_STEREO_ = 0x2,
        PFD_DRAW_TO_WINDOW_ = 0x4,
        PFD_DRAW_TO_BITMAP_ = 0x8,
        PFD_SUPPORT_GDI_ = 0x10,
        PFD_SUPPORT_OPENGL_ = 0x20,
        PFD_GENERIC_FORMAT_ = 0x40,
        PFD_NEED_PALETTE_ = 0x80,
        PFD_NEED_SYSTEM_PALETTE_ = 0x100,
        PFD_SWAP_EXCHANGE_ = 0x200,
        PFD_SWAP_COPY_ = 0x400,
        PFD_SWAP_LAYER_BUFFERS_ = 0x800,
        PFD_GENERIC_ACCELERATED_ = 0x1000,
        PFD_SUPPORT_DIRECTDRAW_ = 0x2000,
        PFD_DIRECT3D_ACCELERATED_ = 0x4000,
        PFD_SUPPORT_COMPOSITION_ = 0x8000,
        PFD_DEPTH_DONTCARE_ = 0x20000000,
        PFD_DOUBLEBUFFER_DONTCARE_ = 0x40000000,
        PFD_STEREO_DONTCARE_ = 0x80000000,
    };
 
    typedef struct tagPIXELFORMATDESCRIPTOR {
        WORD nSize;
        WORD nVersion;
        DWORD dwFlags;
        PFDPixelType iPixelType;
        BYTE cColorBits;
        BYTE cRedBits;
        BYTE cRedShift;
        BYTE cGreenBits;
        BYTE cGreenShift;
        BYTE cBlueBits;
        BYTE cBlueShift;
        BYTE cAlphaBits;
        BYTE cAlphaShift;
        BYTE cAccumBits;
        BYTE cAccumRedBits;
        BYTE cAccumGreenBits;
        BYTE cAccumBlueBits;
        BYTE cAccumAlphaBits;
        BYTE cDepthBits;
        BYTE cStencilBits;
        BYTE cAuxBuffers;
        PFDLayerType iLayerType;
        BYTE bReserved;
        DWORD dwLayerMask;
        DWORD dwVisibleMask;
        DWORD dwDamageMask;
    } PIXELFORMATDESCRIPTOR, * LPPIXELFORMATDESCRIPTOR;
 
    enum
    {
        WHITE_BRUSH_ = 0,
        LTGRAY_BRUSH_ = 1,
        GRAY_BRUSH_ = 2,
        DKGRAY_BRUSH_ = 3,
        BLACK_BRUSH_ = 4,
        NULL_BRUSH_ = 5,
        HOLLOW_BRUSH_ = NULL_BRUSH_,
        WHITE_PEN_ = 6,
        BLACK_PEN_ = 7,
        NULL_PEN_ = 8,
        OEM_FIXED_FONT_ = 10,
        ANSI_FIXED_FONT_ = 11,
        ANSI_VAR_FONT_ = 12,
        SYSTEM_FONT_ = 13,
        DEVICE_DEFAULT_FONT_ = 14,
        DEFAULT_PALETTE_ = 15,
        SYSTEM_FIXED_FONT_ = 16,
        DEFAULT_GUI_FONT_ = 17,
        DC_BRUSH_ = 18,
        DC_PEN_ = 19,
    };
 
    extern "C"
    {
        GHPL_WINAPI HGDIOBJ GHPL_APIENTRY GetStockObject(int fnObject);
        GHPL_WINAPI int GHPL_APIENTRY ChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd);
        GHPL_WINAPI BOOL GHPL_APIENTRY SetPixelFormat(HDC hdc, int iPixelFormat, const PIXELFORMATDESCRIPTOR* ppfd);
        GHPL_WINAPI BOOL GHPL_APIENTRY SwapBuffers(HDC hdc);
        GHPL_WINAPI int GHPL_APIENTRY GetPixelFormat(HDC hdc);
        GHPL_WINAPI int GHPL_APIENTRY DescribePixelFormat(HDC hdc, int iPixelFormat, UINT nBytes, LPPIXELFORMATDESCRIPTOR ppfd);
 
        GHPL_WINAPI HGLRC GHPL_APIENTRY wglCreateContext(HDC hdc);
        GHPL_WINAPI HGLRC GHPL_APIENTRY wglGetCurrentContext();
        GHPL_WINAPI BOOL GHPL_APIENTRY wglDeleteContext(HGLRC context);
        GHPL_WINAPI HDC GHPL_APIENTRY wglGetCurrentDC();
        GHPL_WINAPI BOOL GHPL_APIENTRY wglMakeCurrent(HDC hdc, HGLRC hglrc);
        GHPL_WINAPI PROC GHPL_APIENTRY wglGetProcAddress(LPCSTR lpszProc);
 
        GHPL_WINAPI HDC GHPL_APIENTRY GetDC(HWND hWnd);
        GHPL_WINAPI int GHPL_APIENTRY ReleaseDC(HWND hWnd, HDC hDC);
 
        static constexpr intptr_t DPI_AWARENESS_CONTEXT_UNAWARE = (-1);
        static constexpr intptr_t DPI_AWARENESS_CONTEXT_SYSTEM_AWARE = (-2);
        static constexpr intptr_t DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE = (-3);
        static constexpr intptr_t DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 = (-4);
        static constexpr intptr_t DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED = (-5);
 
        GHPL_WINAPI int GHPL_APIENTRY SetProcessDpiAwarenessContext(intptr_t value);
        GHPL_WINAPI UINT GHPL_APIENTRY GetDpiForSystem(VOID);
        GHPL_WINAPI UINT GHPL_APIENTRY GetDpiForWindow(HWND hwnd);
    }
}