WEB常用图像格式文件(gif,jpg,png)处理源代码.rar_gif_png

// WebImgView.cpp : implementation of the CWebImgView class // #include "stdafx.h" #include "MainFrm.h" #include "WebImg.h" #include "Wlink.h" #include "WebImgDoc.h" #include "WebImgView.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif //***************************************************************************************** //Pointer to Dll Calls an_wtgiffiledib My_an_wtgiffiledib = NULL; an_rdgiffiledib My_an_rdgiffiledib = NULL; rdpngfiledibprog My_rdpngfiledibprog = NULL; wrpngfiledib My_wrpngfiledib = NULL; rdjpgfiledibprog My_rdjpgfiledibprog = NULL; wrjpgfiledib My_wrjpgfiledib = NULL; rdbmpfiledib My_rdbmpfiledib = NULL; wrbmpfiledib My_wrbmpfiledib = NULL; ilcompressfile My_ilcompressfile = NULL; ildecompressfile My_ildecompressfile = NULL; ilcompressbuf My_ilcompressbuf = NULL; ildecompressbuf My_ildecompressbuf = NULL; ReduceDib My_ReduceDib = NULL; InitDll My_InitDll = NULL; DdbtoDib My_DdbtoDib = NULL; //***************************************************************************************** //***************************************************************************************** //Progress Call Back Function. short __cdecl pfcallback(short prog, long calling_object_address) { short result =1; return result; } //***************************************************************************************** //Load Call Back Function of animated gif.This call is passed //to the class using the variable v typecasted to the class //***************************************************************************************** short __cdecl pfcallapp(HANDLE hdib, // Handle for Dib void *GifHeader, // Pointer to GIF Header (Structure) void *ImgDesc, // Pointer to Image Descreptor (Structure) void *GraphCtrl, // Pointer to Graphical Control Ext.(Strucure) long NetLoop, // Number of Netscape loops char *pComment, // Pointer to comment block short p, // Progressive showing long calling_object_address) // LongInt of this { if (calling_object_address != 0) { //Get the calling class CWebImgView *pCWebImgView = (CWebImgView *)calling_object_address; //Pass the call to the calling class return pCWebImgView->CallEvent(hdib, GifHeader, ImgDesc, GraphCtrl, NetLoop, pComment, p); } else return -1; } /***************************************************************************************** Update callback Dispatch funtion which forward the callback to the apprporiate object *****************************************************************************************/ short __cdecl savegifcallapp (HANDLE* hdib, //Pass handle to dib to save WORD * cLeft, //Left of the frame WORD * cTop, //Top of the frame WORD * cWidth, //Width of the frame WORD * cHeigth, //Height of the frame BYTE * cLocalColorTableFlag,// Frame has its own palette. If 0 it will use colortable of frame 1 BYTE * cInterlaceFlag, //Save frame interlaced (only one frame 1) BYTE * cSortFlag, // Not use (set to 0) BYTE * cLocalColorTableSize, BYTE * cBlockSize, //Not used (set to 0) BYTE * cDisposalMethod, //Disposal method BYTE * cUserInputFlag, // Not used (Set to 1) BYTE * cTransparentColorFlag, //Specify if frame has a transparent color WORD * cDelayTime, // Delay time in Micro seconds BYTE * cTransparentColorIndex, // Index to paletteEntry to show background char * cpComment, // Add comment to this frame short frame, // This is passed by the dll to let You know which frame to save short p, //Progress and indicator long calling_object_address) { if (calling_object_address != 0) { //Get the calling class CWebImgView *pCWebImgView = (CWebImgView *)calling_object_address; //Pass the call to the calling class return pCWebImgView->SaveCallEvent(hdib, cLeft, cTop, cWidth, cHeigth, cLocalColorTableFlag, cInterlaceFlag, cSortFlag, cLocalColorTableSize, cBlockSize, cDisposalMethod, cUserInputFlag, cTransparentColorFlag, cDelayTime, cTransparentColorIndex, cpComment, frame, p); } else return -1; } /***************************************************************************************** Update callback Dispatch funtion which forward the callback to the apprporiate object *****************************************************************************************/ short __cdecl DibUpdateCallBack (HANDLE hdib, long calling_object_address) { if (calling_object_address != 0) { //Get the calling class CWebImgView *pCWebImgView = (CWebImgView *)calling_object_address; //Pass the call to the calling class return pCWebImgView->DibUpdateEvent(hdib); } else return -1; } /***************************************************************************************** Update Progress callback Dispatch funtion which forward the callback to the apprporiate object *****************************************************************************************/ short __cdecl UpdateProgressCallBack (short Progress, long calling_object_address) { if (calling_object_address != 0) { //Get the calling class CWebImgView *pCWebImgView = (CWebImgView *)calling_object_address; //Pass the call to the calling class return pCWebImgView->ProgressEvent(Progress); } else return -1; } /********************************************************************/ /*** DDBtoDIB: ***/ /********************************************************************/ HANDLE CWebImgView::IDDBtoDIB(HBITMAP hDDB, HPALETTE hPal, UINT uBPP) { UINT uStyle = BI_RGB; LPBITMAPINFOHEADER lpBI; LPBITMAPINFO lpBMI; BYTE *lpBits; BITMAPINFOHEADER BI; BITMAP BM; HPALETTE hOldPal; HANDLE hDIB; HANDLE h; HDC hDC; DWORD dwSize; UINT uLines; if (!hDDB) { return NULL; } if (!hPal) hPal = (HPALETTE) GetStockObject(DEFAULT_PALETTE); GetObject(hDDB, sizeof(BITMAP), (LPSTR) &BM); if (uBPP == 0) uBPP = 1 * BM.bmBitsPixel; BI.biSize = sizeof(BITMAPINFOHEADER); BI.biWidth = BM.bmWidth; BI.biHeight = BM.bmHeight; BI.biPlanes = 1; BI.biBitCount = uBPP; BI.biCompression = uStyle; BI.biSizeImage = 01; BI.biXPelsPerMeter = 2953; BI.biYPelsPerMeter = 2953; BI.biClrUsed = 0; BI.biClrUsed = DibNumColors(&BI); BI.biClrImportant = 0; dwSize = BI.biSize + BI.biClrUsed * sizeof(RGBQUAD); hDIB = GlobalAlloc(GHND, dwSize); if (!hDIB) return NULL; lpBMI = (LPBITMAPINFO) GlobalLock(hDIB); lpBI = (LPBITMAPINFOHEADER) lpBMI; *lpBI = BI; hDC = ::GetDC(NULL); hOldPal = SelectPalette(hDC, hPal, FALSE); RealizePalette(hDC); GetDI