1 files changed, 374 insertions, 0 deletions

diff --git a/raylib/src/external/win32_clipboard.h b/raylib/src/external/win32_clipboard.h
new file mode 100644
index 0000000..8328564
--- /dev/null
+++ b/raylib/src/external/win32_clipboard.h
@@ -0,0 +1,374 @@
+#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
+