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treender_dependences/raylib/external/win32_clipboard.h
Nikola Petrov e1f0406449 init
2025-01-31 11:09:17 +01:00

375 lines
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#if !defined(_WIN32)
# error "This module is only made for Windows OS"
#endif
#ifndef WIN32_CLIPBOARD_
#define WIN32_CLIPBOARD_
unsigned char* Win32GetClipboardImageData(int* width, int* height, unsigned long long int *dataSize);
#endif // WIN32_CLIPBOARD_
#ifdef WIN32_CLIPBOARD_IMPLEMENTATION
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <assert.h>
// NOTE: These search for architecture is taken from "Windows.h", and it's necessary if we really don't wanna import windows.h
// and still make it compile on msvc, because import indirectly importing "winnt.h" (e.g. <minwindef.h>) can cause problems is these are not defined.
#if !defined(_X86_) && !defined(_68K_) && !defined(_MPPC_) && !defined(_IA64_) && !defined(_AMD64_) && !defined(_ARM_) && !defined(_ARM64_) && !defined(_ARM64EC_) && defined(_M_IX86)
#define _X86_
#if !defined(_CHPE_X86_ARM64_) && defined(_M_HYBRID)
#define _CHPE_X86_ARM64_
#endif
#endif
#if !defined(_AMD64_) && !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && !defined(_ARM_) && !defined(_ARM64_) && (defined(_M_AMD64) || defined(_M_ARM64EC))
#define _AMD64_
#endif
#if !defined(_ARM_) && !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && !defined(_ARM64_) && !defined(_ARM64EC_) && defined(_M_ARM)
#define _ARM_
#endif
#if !defined(_ARM64_) && !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && !defined(_ARM_) && !defined(_ARM64EC_) && defined(_M_ARM64)
#define _ARM64_
#endif
#if !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_ARM_) && !defined(_ARM64_) && !defined(_ARM64EC_) && defined(_M_ARM64EC)
#define _ARM64EC_
#endif
#if !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && !defined(_ARM_) && !defined(_ARM64_) && !defined(_ARM64EC_) && defined(_M_M68K)
#define _68K_
#endif
#if !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_IA64_) && !defined(_AMD64_) && !defined(_ARM_) && !defined(_ARM64_) && !defined(_ARM64EC_) && defined(_M_MPPC)
#define _MPPC_
#endif
#if !defined(_IA64_) && !defined(_68K_) && !defined(_MPPC_) && !defined(_X86_) && !defined(_M_IX86) && !defined(_AMD64_) && !defined(_ARM_) && !defined(_ARM64_) && !defined(_ARM64EC_) && defined(_M_IA64)
#define _IA64_
#endif
#define WIN32_LEAN_AND_MEAN
// #include <sdkddkver.h>
// #include <windows.h>
// #include <winuser.h>
#include <minwindef.h>
// #include <minwinbase.h>
#ifndef WINAPI
#if defined(_ARM_)
#define WINAPI
#else
#define WINAPI __stdcall
#endif
#endif
#ifndef WINAPI
#if defined(_ARM_)
#define WINAPI
#else
#define WINAPI __stdcall
#endif
#endif
#ifndef WINBASEAPI
#ifndef _KERNEL32_
#define WINBASEAPI DECLSPEC_IMPORT
#else
#define WINBASEAPI
#endif
#endif
#ifndef WINUSERAPI
#ifndef _USER32_
#define WINUSERAPI __declspec (dllimport)
#else
#define WINUSERAPI
#endif
#endif
typedef int WINBOOL;
// typedef HANDLE HGLOBAL;
#ifndef HWND
#define HWND void*
#endif
#if !defined(_WINUSER_) || !defined(WINUSER_ALREADY_INCLUDED)
WINUSERAPI WINBOOL WINAPI OpenClipboard(HWND hWndNewOwner);
WINUSERAPI WINBOOL WINAPI CloseClipboard(VOID);
WINUSERAPI DWORD WINAPI GetClipboardSequenceNumber(VOID);
WINUSERAPI HWND WINAPI GetClipboardOwner(VOID);
WINUSERAPI HWND WINAPI SetClipboardViewer(HWND hWndNewViewer);
WINUSERAPI HWND WINAPI GetClipboardViewer(VOID);
WINUSERAPI WINBOOL WINAPI ChangeClipboardChain(HWND hWndRemove, HWND hWndNewNext);
WINUSERAPI HANDLE WINAPI SetClipboardData(UINT uFormat, HANDLE hMem);
WINUSERAPI HANDLE WINAPI GetClipboardData(UINT uFormat);
WINUSERAPI UINT WINAPI RegisterClipboardFormatA(LPCSTR lpszFormat);
WINUSERAPI UINT WINAPI RegisterClipboardFormatW(LPCWSTR lpszFormat);
WINUSERAPI int WINAPI CountClipboardFormats(VOID);
WINUSERAPI UINT WINAPI EnumClipboardFormats(UINT format);
WINUSERAPI int WINAPI GetClipboardFormatNameA(UINT format, LPSTR lpszFormatName, int cchMaxCount);
WINUSERAPI int WINAPI GetClipboardFormatNameW(UINT format, LPWSTR lpszFormatName, int cchMaxCount);
WINUSERAPI WINBOOL WINAPI EmptyClipboard(VOID);
WINUSERAPI WINBOOL WINAPI IsClipboardFormatAvailable(UINT format);
WINUSERAPI int WINAPI GetPriorityClipboardFormat(UINT *paFormatPriorityList, int cFormats);
WINUSERAPI HWND WINAPI GetOpenClipboardWindow(VOID);
#endif
#ifndef HGLOBAL
#define HGLOBAL void*
#endif
#if !defined(_WINBASE_) || !defined(WINBASE_ALREADY_INCLUDED)
WINBASEAPI SIZE_T WINAPI GlobalSize (HGLOBAL hMem);
WINBASEAPI LPVOID WINAPI GlobalLock (HGLOBAL hMem);
WINBASEAPI WINBOOL WINAPI GlobalUnlock (HGLOBAL hMem);
#endif
#if !defined(_WINGDI_) || !defined(WINGDI_ALREADY_INCLUDED)
#ifndef BITMAPINFOHEADER_ALREADY_DEFINED
#define BITMAPINFOHEADER_ALREADY_DEFINED
// Does this header need to be packed ? by the windowps header it doesnt seem to be
#pragma pack(push, 1)
typedef struct tagBITMAPINFOHEADER {
DWORD biSize;
LONG biWidth;
LONG biHeight;
WORD biPlanes;
WORD biBitCount;
DWORD biCompression;
DWORD biSizeImage;
LONG biXPelsPerMeter;
LONG biYPelsPerMeter;
DWORD biClrUsed;
DWORD biClrImportant;
} BITMAPINFOHEADER,*LPBITMAPINFOHEADER,*PBITMAPINFOHEADER;
#pragma pack(pop)
#endif
#ifndef BITMAPFILEHEADER_ALREADY_DEFINED
#define BITMAPFILEHEADER_ALREADY_DEFINED
#pragma pack(push, 1)
typedef struct tagBITMAPFILEHEADER {
WORD bfType;
DWORD bfSize;
WORD bfReserved1;
WORD bfReserved2;
DWORD bfOffBits;
} BITMAPFILEHEADER,*LPBITMAPFILEHEADER,*PBITMAPFILEHEADER;
#pragma pack(pop)
#endif
#ifndef RGBQUAD_ALREADY_DEFINED
#define RGBQUAD_ALREADY_DEFINED
typedef struct tagRGBQUAD {
BYTE rgbBlue;
BYTE rgbGreen;
BYTE rgbRed;
BYTE rgbReserved;
} RGBQUAD, *LPRGBQUAD;
#endif
// https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-wmf/4e588f70-bd92-4a6f-b77f-35d0feaf7a57
#define BI_RGB 0x0000
#define BI_RLE8 0x0001
#define BI_RLE4 0x0002
#define BI_BITFIELDS 0x0003
#define BI_JPEG 0x0004
#define BI_PNG 0x0005
#define BI_CMYK 0x000B
#define BI_CMYKRLE8 0x000C
#define BI_CMYKRLE4 0x000D
#endif
// https://learn.microsoft.com/en-us/windows/win32/dataxchg/standard-clipboard-formats
#define CF_DIB 8
// https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setsystemcursor
// #define OCR_NORMAL 32512 // Normal select
// #define OCR_IBEAM 32513 // Text select
// #define OCR_WAIT 32514 // Busy
// #define OCR_CROSS 32515 // Precision select
// #define OCR_UP 32516 // Alternate select
// #define OCR_SIZENWSE 32642 // Diagonal resize 1
// #define OCR_SIZENESW 32643 // Diagonal resize 2
// #define OCR_SIZEWE 32644 // Horizontal resize
// #define OCR_SIZENS 32645 // Vertical resize
// #define OCR_SIZEALL 32646 // Move
// #define OCR_NO 32648 // Unavailable
// #define OCR_HAND 32649 // Link select
// #define OCR_APPSTARTING 32650 //
//----------------------------------------------------------------------------------
// Module Internal Functions Declaration
//----------------------------------------------------------------------------------
static BOOL OpenClipboardRetrying(HWND handle); // Open clipboard with a number of retries
static int GetPixelDataOffset(BITMAPINFOHEADER bih);
unsigned char* Win32GetClipboardImageData(int* width, int* height, unsigned long long int *dataSize)
{
HWND win = NULL; // Get from somewhere but is doesnt seem to matter
const char* msgString = "";
int severity = LOG_INFO;
BYTE* bmpData = NULL;
if (!OpenClipboardRetrying(win)) {
severity = LOG_ERROR;
msgString = "Couldn't open clipboard";
goto end;
}
HGLOBAL clipHandle = (HGLOBAL)GetClipboardData(CF_DIB);
if (!clipHandle) {
severity = LOG_ERROR;
msgString = "Clipboard data is not an Image";
goto close;
}
BITMAPINFOHEADER *bmpInfoHeader = (BITMAPINFOHEADER *)GlobalLock(clipHandle);
if (!bmpInfoHeader) {
// Mapping from HGLOBAL to our local *address space* failed
severity = LOG_ERROR;
msgString = "Clipboard data failed to be locked";
goto unlock;
}
*width = bmpInfoHeader->biWidth;
*height = bmpInfoHeader->biHeight;
SIZE_T clipDataSize = GlobalSize(clipHandle);
if (clipDataSize < sizeof(BITMAPINFOHEADER)) {
// Format CF_DIB needs space for BITMAPINFOHEADER struct.
msgString = "Clipboard has Malformed data";
severity = LOG_ERROR;
goto unlock;
}
// Denotes where the pixel data starts from the bmpInfoHeader pointer
int pixelOffset = GetPixelDataOffset(*bmpInfoHeader);
//--------------------------------------------------------------------------------//
//
// The rest of the section is about create the bytes for a correct BMP file
// Then we copy the data and to a pointer
//
//--------------------------------------------------------------------------------//
BITMAPFILEHEADER bmpFileHeader = {0};
SIZE_T bmpFileSize = sizeof(bmpFileHeader) + clipDataSize;
*dataSize = bmpFileSize;
bmpFileHeader.bfType = 0x4D42; //https://stackoverflow.com/questions/601430/multibyte-character-constants-and-bitmap-file-header-type-constants#601536
bmpFileHeader.bfSize = (DWORD)bmpFileSize; // Up to 4GB works fine
bmpFileHeader.bfOffBits = sizeof(bmpFileHeader) + pixelOffset;
//
// Each process has a default heap provided by the system
// Memory objects allocated by GlobalAlloc and LocalAlloc are in private,
// committed pages with read/write access that cannot be accessed by other processes.
//
// This may be wrong since we might be allocating in a DLL and freeing from another module, the main application
// that may cause heap corruption. We could create a FreeImage function
//
bmpData = malloc(sizeof(bmpFileHeader) + clipDataSize);
// First we add the header for a bmp file
memcpy(bmpData, &bmpFileHeader, sizeof(bmpFileHeader));
// Then we add the header for the bmp itself + the pixel data
memcpy(bmpData + sizeof(bmpFileHeader), bmpInfoHeader, clipDataSize);
msgString = "Clipboad image acquired successfully";
unlock:
GlobalUnlock(clipHandle);
close:
CloseClipboard();
end:
TRACELOG(severity, msgString);
return bmpData;
}
static BOOL OpenClipboardRetrying(HWND hWnd)
{
static const int maxTries = 20;
static const int sleepTimeMS = 60;
for (int _ = 0; _ < maxTries; ++_)
{
// Might be being hold by another process
// Or yourself forgot to CloseClipboard
if (OpenClipboard(hWnd)) {
return true;
}
Sleep(sleepTimeMS);
}
return false;
}
// Based off of researching microsoft docs and reponses from this question https://stackoverflow.com/questions/30552255/how-to-read-a-bitmap-from-the-windows-clipboard#30552856
// https://learn.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-bitmapinfoheader
// Get the byte offset where does the pixels data start (from a packed DIB)
static int GetPixelDataOffset(BITMAPINFOHEADER bih)
{
int offset = 0;
const unsigned int rgbaSize = sizeof(RGBQUAD);
// biSize Specifies the number of bytes required by the structure
// We expect to always be 40 because it should be packed
if (40 == bih.biSize && 40 == sizeof(BITMAPINFOHEADER))
{
//
// biBitCount Specifies the number of bits per pixel.
// Might exist some bit masks *after* the header and *before* the pixel offset
// we're looking, but only if we have more than
// 8 bits per pixel, so we need to ajust for that
//
if (bih.biBitCount > 8)
{
// if bih.biCompression is RBG we should NOT offset more
if (bih.biCompression == BI_BITFIELDS)
{
offset += 3 * rgbaSize;
} else if (bih.biCompression == 6 /* BI_ALPHABITFIELDS */)
{
// Not widely supported, but valid.
offset += 4 * rgbaSize;
}
}
}
//
// biClrUsed Specifies the number of color indices in the color table that are actually used by the bitmap.
// If this value is zero, the bitmap uses the maximum number of colors
// corresponding to the value of the biBitCount member for the compression mode specified by biCompression.
// If biClrUsed is nonzero and the biBitCount member is less than 16
// the biClrUsed member specifies the actual number of colors
//
if (bih.biClrUsed > 0) {
offset += bih.biClrUsed * rgbaSize;
} else {
if (bih.biBitCount < 16)
{
offset = offset + (rgbaSize << bih.biBitCount);
}
}
return bih.biSize + offset;
}
#endif // WIN32_CLIPBOARD_IMPLEMENTATION
// EOF
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