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// Dib.cpp : implementation file // #include "stdafx.h" #include <stdlib.h> #include <time.h> #include <math.h> #include <windowsx.h> // especially for GlobalAllocPtr #include "Dib.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif IMPLEMENT_SERIAL(CDib, CObject, 0) //////////////////////////////////////////////////////////////////////////// CDib::CDib() { m_hDib = NULL; m_hBitmap = NULL; m_pPalette = NULL; m_pBitmap = NULL; } CDib::~CDib() { Destroy(); if (m_pBitmap != NULL) { delete m_pBitmap; m_pBitmap = NULL; } if (m_pPalette != NULL) { delete m_pPalette; m_pPalette = NULL; } } void CDib::Destroy() { if (m_hDib != NULL) { DestroyDIB(m_hDib); m_hDib = NULL; } } HDIB CDib::Detach() { if (m_hDib == NULL) return NULL; HDIB hDib = m_hDib; m_hDib = NULL; if (m_pBitmap != NULL) { delete m_pBitmap; m_pBitmap = NULL; } if (m_pPalette != NULL) { delete m_pPalette; m_pPalette = NULL; } return hDib; } BOOL CDib::Create(DWORD dwWidth, DWORD dwHeight) { HDIB hDib = CreateDefaultDIB(dwWidth, dwHeight); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(DWORD dwWidth, DWORD dwHeight, WORD wBitCount) { HDIB hDib = CreateDIB(dwWidth, dwHeight, wBitCount); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(LPBYTE lpDIB) { if (lpDIB == NULL) return FALSE; DWORD dwSize = DIBlockSize(lpDIB); HDIB hDib = GlobalAlloc(GHND, dwSize); // Check that DIB handle is valid if (! hDib) return FALSE; LPBYTE lpbi = (LPBYTE)GlobalLock(hDib); if (! lpbi) return FALSE; CopyMemory(lpbi, lpDIB, dwSize); GlobalUnlock(hDib); Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(LPBYTE lpDIB, WORD wBitCount) // bits/pixel { if (lpDIB == NULL) return FALSE; if (! Create(lpDIB)) return FALSE; WORD wBits = ((LPBITMAPINFOHEADER)lpDIB)->biBitCount; if (wBitCount == wBits) return TRUE; HDIB hNewDib = ConvertDIBFormat(m_hDib, wBitCount, NULL); if (! hNewDib) return FALSE; Destroy(); m_hDib = hNewDib; return UpdateInternal(); } BOOL CDib::Create(HBITMAP hBitmap) // DIB Section { if (! hBitmap) return FALSE; HDIB hDib = DIBSectionToDIB(hBitmap); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(HBITMAP hBitmap, // DIB Section WORD wBitCount) // bits/pixel { HDIB hNewDib; if (! hBitmap) return FALSE; HDIB hDib = DIBSectionToDIB(hBitmap); if (! hDib) return FALSE; DIBSECTION ds; GetObject(hBitmap, sizeof(DIBSECTION), &ds); if (wBitCount == ds.dsBmih.biBitCount) hNewDib = hDib; else { hNewDib = ConvertDIBFormat(hDib, wBitCount, NULL); // cleanup hDib GlobalFree(hDib); } if (! hNewDib) return FALSE; Destroy(); m_hDib = hNewDib; return UpdateInternal(); } BOOL CDib::Create(HBITMAP hBitmap, // DDB bitmap HPALETTE hPalette) // DDB palette { if (! hBitmap) return FALSE; HDIB hDib = BitmapToDIB(hBitmap, hPalette); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(HBITMAP hBitmap, // DDB bitmap HPALETTE hPalette, // DDB palette WORD wBitCount) // bits/pixel { if (! hBitmap) return FALSE; HDIB hDib = BitmapToDIB(hBitmap, hPalette, wBitCount); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(CRect rcScreen) { HDIB hDib = CopyScreenToDIB(rcScreen); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(HWND hWnd, WORD fPrintArea) { HDIB hDib = CopyWindowToDIB(hWnd, fPrintArea); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Create(HWND hWnd, CRect rcClientArea) { HDIB hDib = CopyClientRectToDIB(hWnd, rcClientArea); if (! hDib) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } BOOL CDib::Attach(HDIB hDib) { if (hDib == NULL) return FALSE; Destroy(); m_hDib = hDib; return UpdateInternal(); } void CDib::Serialize(CArchive& ar) { CObject::Serialize(ar); ar.Flush(); if (ar.IsStoring()) { Write(ar.GetFile()); } else { Read(ar.GetFile()); } } BOOL CDib::Load(UINT uIDS, LPCTSTR lpszDibType) { LPCTSTR lpszDibRes = MAKEINTRESOURCE(uIDS); return Load(lpszDibRes, lpszDibType); } BOOL CDib::Load(LPCTSTR lpszDibRes, LPCTSTR lpszDibType) { HINSTANCE hInst = AfxGetInstanceHandle(); HRSRC hRes = ::FindResource(hInst, lpszDibRes, lpszDibType); HGLOBAL hData = ::LoadResource(hInst, hRes); // if resource ok? if (hRes == NULL || hData == NULL) return FALSE; // get resource buffer LPBYTE lpBuf = (LPBYTE)::LockResource(hData); // is DIB ? if (((LPBITMAPFILEHEADER)lpBuf)->bfType != DIB_HEADER_MARKER/*"BM"*/) return FALSE; // use this buffer to create CDib LPBYTE lpDIB = lpBuf + sizeof(BITMAPFILEHEADER); return Create(lpDIB); } BOOL CDib::Load(LPCTSTR lpszDibFile) { TRY { CFile file(lpszDibFile, CFile::modeRead|CFile::shareDenyNone); if (! Read(&file)) return FALSE; } CATCH (CException, e) { return FALSE; } END_CATCH return TRUE; } BOOL CDib::Save(LPCTSTR lpszDibFile) { TRY { CFile file(lpszDibFile, CFile::modeCreate|CFile::modeWrite); if (! Write(&file)) return FALSE; } CATCH (CException, e) { return FALSE; } END_CATCH return TRUE; } BOOL CDib::Read(CFile *pFile) { WaitCursorBegin(); LPBITMAPINFOHEADER lpbi; DWORD dwSize; TRY { // read DIB file header BITMAPFILEHEADER bmfHdr; pFile->Read(&bmfHdr, sizeof(BITMAPFILEHEADER)); // is DIB file? if (bmfHdr.bfType != DIB_HEADER_MARKER) // "BM" { WaitCursorEnd(); return FALSE; } DWORD dwLength = pFile->GetLength(); if (bmfHdr.bfSize != dwLength) bmfHdr.bfSize = dwLength; // read DIB buffer dwSize = bmfHdr.bfSize - sizeof(BITMAPFILEHEADER); lpbi = (LPBITMAPINFOHEADER)GlobalAllocPtr(GHND, dwSize); DWORD dwCount = pFile->ReadHuge(lpbi, dwSize); // read ok? if (dwCount != dwSize) { GlobalFreePtr(lpbi); WaitCursorEnd(); return FALSE; } // Check to see that it's a Windows DIB -- an OS/2 DIB would cause // strange problems with the rest of the DIB API since the fields // in the header are different and the color table entries are // smaller. // // If it's not a Windows DIB (e.g. if biSize is wrong), return NULL. if (lpbi->biSize != sizeof(BITMAPINFOHEADER)) { GlobalFreePtr(lpbi); WaitCursorEnd(); return FALSE; } // fill color num item int nNumColors = (UINT)lpbi->biClrUsed; if (nNumColors == 0) { // no color table for 24-bit, default size otherwise if (lpbi->biBitCount > 8)//(lpbi->biBitCount != 24) nNumColors = 1 << lpbi->biBitCount; // standard size table } // fill in some default values if they are zero if (lpbi->biClrUsed == 0) lpbi->biClrUsed = nNumColors; if (lpbi->biSizeImage == 0) lpbi->biSizeImage = ((((lpbi->biWidth * (DWORD)lpbi->biBitCount) + 31) & ~31) >> 3) * lpbi->biHeight; } CATCH (CException, e) { GlobalFreePtr(lpbi); WaitCursorEnd(); return FAL