532 lines
15 KiB
C
532 lines
15 KiB
C
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/****************************** Module Header ******************************\
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* Module Name: GENERIC.C
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*
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* Handles all API routines for the generic sub-dll of the ole dll.
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* Since the data format is unknown, all the routines are written with the
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* assumption that all the relevant data is placed in a single global data
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* segment. Note that this assumption is not valid for metafiles, bitmaps, and
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* and there can always be some other formats with such idiosyncracies. To
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* accommodate those cases the rendering dll writer should replace the relevant
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* routines after the creation of the generic object. If for a given class this
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* assumption (about data format) is valid then the dll writer need to replace
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* only the Draw and QueryBounds functions.
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*
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* Created: November-1990
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*
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* Copyright (c) 1990, 1991 Microsoft Corporation
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*
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* History:
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*
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* Srinik, Raor (11/05/90) Designed, coded
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*
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\***************************************************************************/
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#include <windows.h>
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#include "dll.h"
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#include "pict.h"
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char aMacText[4] = {'T', 'E', 'X', 'T'};
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char aMacRtf[4] = "RTF";
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extern OLESTATUS FARINTERNAL wCreateDummyMetaFile (LPOBJECT_MF, int, int);
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#pragma alloc_text(_TEXT, GenSaveToStream, GenLoadFromStream, GetBytes, PutBytes, PutStrWithLen, PutAtomIntoStream, GenQueryBounds)
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OLEOBJECTVTBL vtblGEN = {
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ErrQueryProtocol, // check whether the speced protocol is supported
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GenRelease, // Release
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ErrShow, // Show
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ErrPlay, // plat
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GenGetData, // Get the object data
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GenSetData, // Set the object data
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ErrSetTargetDevice, //
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ErrSetBounds, // set viewport bounds
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GenEnumFormat, // enumerate supported formats
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ErrSetColorScheme, //
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GenRelease, // delete
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ErrSetHostNames, //
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GenSaveToStream, // write to file
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GenClone, // clone object
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ErrCopyFromLink, // Create embedded from Link
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GenEqual, // compares the given objects for data equality
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GenCopy, // copy to clip
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GenDraw, // draw the object
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ErrActivate, // open
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ErrExecute, // excute
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ErrClose, // Stop
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ErrUpdate, // Update
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ErrReconnect, // Reconnect
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ErrObjectConvert, // convert object to specified type
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ErrGetUpdateOptions, // update options
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ErrSetUpdateOptions, // update options
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ObjRename, // Change Object name
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ObjQueryName, // Get current object name
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GenQueryType, // Object type
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GenQueryBounds, // QueryBounds
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ObjQuerySize, // Find the size of the object
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ErrQueryOpen, // Query open
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ErrQueryOutOfDate, // query whether object is current
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ErrQueryRelease, // release related stuff
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ErrQueryRelease,
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ErrQueryRelease,
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ErrRequestData, // requestdata
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ErrObjectLong, // objectLong
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GenChangeData // change data of the existing object
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};
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OLESTATUS FARINTERNAL GenRelease (lpobj)
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LPOBJECT_GEN lpobj;
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{
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HOBJECT hobj;
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if (lpobj->hData) {
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GlobalFree (lpobj->hData);
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lpobj->hData = NULL;
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}
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if (lpobj->aClass)
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GlobalDeleteAtom (lpobj->aClass);
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if (lpobj->head.lhclientdoc)
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DocDeleteObject ((LPOLEOBJECT) lpobj);
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if (hobj = lpobj->head.hobj){
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lpobj->head.hobj = NULL;
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GlobalUnlock (hobj);
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GlobalFree (hobj);
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}
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return OLE_OK;
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}
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OLESTATUS FARINTERNAL GenSaveToStream (lpobj, lpstream)
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LPOBJECT_GEN lpobj;
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LPOLESTREAM lpstream;
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{
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LPSTR lpData;
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OLESTATUS retVal = OLE_OK;
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DWORD dwClipFormat = NULL;
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char formatName[MAX_STR];
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if (!lpobj->hData)
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return OLE_ERROR_BLANK;
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if (PutBytes (lpstream, (LPSTR) &dwVerToFile, sizeof(LONG)))
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return OLE_ERROR_STREAM;
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if (PutBytes (lpstream, (LPSTR) &lpobj->head.ctype, sizeof(LONG)))
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return OLE_ERROR_STREAM;
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if (PutAtomIntoStream (lpstream, lpobj->aClass))
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return OLE_ERROR_STREAM;
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if (lpobj->cfFormat < 0xC000)
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// then it is a predefined format
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dwClipFormat = lpobj->cfFormat;
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if (PutBytes (lpstream, (LPSTR) &dwClipFormat, sizeof(DWORD)))
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return OLE_ERROR_STREAM;
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if (!dwClipFormat) {
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if (!GetClipboardFormatName (lpobj->cfFormat, (LPSTR) formatName,
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sizeof(formatName)))
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return OLE_ERROR_FORMAT;
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if (PutStrWithLen (lpstream, formatName))
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return OLE_ERROR_STREAM;
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}
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if (!lpobj->sizeBytes)
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return OLE_ERROR_BLANK;
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if (PutBytes (lpstream, (LPSTR) &lpobj->sizeBytes, sizeof(DWORD)))
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return OLE_ERROR_STREAM;
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if (!(lpData = GlobalLock (lpobj->hData)))
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return OLE_ERROR_MEMORY;
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if (PutBytes (lpstream, lpData, lpobj->sizeBytes))
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retVal = OLE_ERROR_STREAM;
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GlobalUnlock (lpobj->hData);
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return retVal;
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}
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OLESTATUS FARINTERNAL GenClone (lpobjsrc, lpclient, lhclientdoc, lpobjname, lplpobj)
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LPOBJECT_GEN lpobjsrc;
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LPOLECLIENT lpclient;
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LHCLIENTDOC lhclientdoc;
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LPSTR lpobjname;
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LPOBJECT_GEN FAR * lplpobj;
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{
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if (!lpobjsrc->hData)
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return OLE_ERROR_BLANK;
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if (!CheckClientDoc ((LPCLIENTDOC) lhclientdoc))
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return OLE_ERROR_HANDLE;
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if (!(*lplpobj = GenCreateObject (lpobjsrc->hData, lpclient,
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FALSE, lhclientdoc,
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lpobjname, lpobjsrc->head.ctype)))
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return OLE_ERROR_MEMORY;
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else {
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(*lplpobj)->cfFormat = lpobjsrc->cfFormat;
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(*lplpobj)->aClass = DuplicateAtom (lpobjsrc->aClass);
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return OLE_OK;
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}
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}
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OLESTATUS FARINTERNAL GenEqual (lpobj1, lpobj2)
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LPOBJECT_GEN lpobj1;
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LPOBJECT_GEN lpobj2;
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{
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if (CmpGlobals (lpobj1->hData, lpobj2->hData))
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return OLE_OK;
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return OLE_ERROR_NOT_EQUAL;
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}
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OLESTATUS FARINTERNAL GenCopy (lpobj)
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LPOBJECT_GEN lpobj;
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{
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HANDLE hData;
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if (!lpobj->hData)
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return OLE_ERROR_BLANK;
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if (!(hData = DuplicateGlobal (lpobj->hData, GMEM_MOVEABLE)))
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return OLE_ERROR_MEMORY;
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SetClipboardData (lpobj->cfFormat, hData);
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return OLE_OK;
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}
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OLESTATUS FARINTERNAL GenLoadFromStream (lpstream, lpclient, lhclientdoc, lpobjname, lplpobj, objType, aClass, cfFormat)
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LPOLESTREAM lpstream;
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LPOLECLIENT lpclient;
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LHCLIENTDOC lhclientdoc;
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LPSTR lpobjname;
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LPOLEOBJECT FAR * lplpobj;
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LONG objType;
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ATOM aClass;
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OLECLIPFORMAT cfFormat;
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{
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LPOBJECT_GEN lpobj = NULL;
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OLESTATUS retVal = OLE_ERROR_STREAM;
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HANDLE hData;
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LPSTR lpData;
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DWORD dwClipFormat;
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char formatName[MAX_STR];
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LONG length;
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if (!(*lplpobj = (LPOLEOBJECT) (lpobj = GenCreateBlank(lhclientdoc,
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lpobjname, objType,
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aClass)))) {
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if (aClass)
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GlobalDeleteAtom(aClass);
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return OLE_ERROR_MEMORY;
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}
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if (GetBytes (lpstream, (LPSTR) &dwClipFormat, sizeof (DWORD)))
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goto errLoad;
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// If object is from MAC then we will keep the data intact if the data
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// format is either TEXT or RTF
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if (HIWORD(dwVerFromFile) == OS_MAC) {
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if (dwClipFormat == *((DWORD *) aMacText))
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lpobj->cfFormat = CF_TEXT;
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else if (dwClipFormat == *((DWORD *) aMacRtf))
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lpobj->cfFormat = RegisterClipboardFormat ((LPSTR) "Rich Text Format");
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else
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lpobj->cfFormat = NULL;
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}
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else {
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// object is created on windows
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if (!dwClipFormat) {
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// this is new file format. format name string follows
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if (GetBytes (lpstream, (LPSTR) &length, sizeof (LONG))
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|| GetBytes (lpstream, (LPSTR)formatName, length)
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|| (!(lpobj->cfFormat = RegisterClipboardFormat ((LPSTR) formatName))))
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goto errLoad;
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}
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else if ((lpobj->cfFormat = (WORD) dwClipFormat) >= 0xc000) {
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// if format is not predefined and file format is old, then use
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// what value is passed to you through "cfFormat" argument
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lpobj->cfFormat = cfFormat;
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}
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}
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if (GetBytes (lpstream, (LPSTR) &lpobj->sizeBytes, sizeof (DWORD)))
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goto errLoad;
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lpobj->head.lpclient = lpclient;
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retVal = OLE_ERROR_MEMORY;
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if (!(hData = GlobalAlloc (GMEM_MOVEABLE, lpobj->sizeBytes)))
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goto errLoad;
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if (!(lpData = GlobalLock (hData)))
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goto errMem;
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if (GetBytes (lpstream, lpData, lpobj->sizeBytes)) {
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retVal = OLE_ERROR_STREAM;
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GlobalUnlock (hData);
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goto errMem;
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}
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lpobj->hData = hData;
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GlobalUnlock (hData);
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// if the object is from MAC then we want delete this and create blank
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// metafile object, which draws a rectangle
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if ((HIWORD(dwVerFromFile) == OS_MAC) && !lpobj->cfFormat) {
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LPOBJECT_MF lpobjMf;
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OleDelete ((LPOLEOBJECT)lpobj); // delete generic object
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// Now create a dummy metafile object which draws a rectangle of size
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// 1" x 1". Note that 1" = 2540 HIMETRIC units
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lpobjMf = MfCreateBlank (lhclientdoc, lpobjname, objType);
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lpobjMf->head.cx = lpobjMf->mfp.xExt = 2540;
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lpobjMf->head.cy = - (lpobjMf->mfp.yExt = 2540);
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if ((retVal = wCreateDummyMetaFile (lpobjMf, lpobjMf->mfp.xExt,
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lpobjMf->mfp.yExt)) != OLE_OK) {
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OleDelete ((LPOLEOBJECT) lpobjMf);
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return retVal;
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}
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*lplpobj = (LPOLEOBJECT) lpobjMf;
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}
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return OLE_OK;
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errMem:
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GlobalFree (hData);
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errLoad:
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OleDelete ((LPOLEOBJECT)lpobj);
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*lplpobj = NULL;
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return OLE_ERROR_STREAM;
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}
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LPOBJECT_GEN INTERNAL GenCreateObject (hData, lpclient, fDelete, lhclientdoc, lpobjname, objType)
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HANDLE hData;
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LPOLECLIENT lpclient;
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BOOL fDelete;
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LHCLIENTDOC lhclientdoc;
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LPSTR lpobjname;
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LONG objType;
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{
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LPOBJECT_GEN lpobj;
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if (!hData)
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return NULL;
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if (lpobj = GenCreateBlank (lhclientdoc, lpobjname, objType, NULL)) {
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if (GenChangeData (lpobj, hData, lpclient, fDelete) != OLE_OK) {
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GenRelease (lpobj);
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lpobj = NULL;
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}
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}
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return lpobj;
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}
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// If the routine fails then the object will be left with it's old data.
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// If fDelete is TRUE, then hNewData will be deleted whether the routine
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// is successful or not.
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OLESTATUS FARINTERNAL GenChangeData (lpobj, hSrcData, lpclient, fDelete)
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LPOBJECT_GEN lpobj;
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HANDLE hSrcData;
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LPOLECLIENT lpclient;
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BOOL fDelete;
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{
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HANDLE hDestData;
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if (!fDelete) {
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if (!(hDestData = DuplicateGlobal (hSrcData, GMEM_MOVEABLE)))
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return OLE_ERROR_MEMORY;
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}
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else {
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// change the ownership to yourself
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if (!(hDestData = GlobalReAlloc(hSrcData,0L,GMEM_MODIFY|GMEM_SHARE))){
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hDestData = DuplicateGlobal (hSrcData, GMEM_MOVEABLE);
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GlobalFree (hSrcData);
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if (!hDestData)
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return OLE_ERROR_MEMORY;
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}
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}
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|
lpobj->head.lpclient = lpclient;
|
||
|
|
if (lpobj->hData)
|
||
|
|
GlobalFree (lpobj->hData);
|
||
|
|
lpobj->hData = hDestData;
|
||
|
|
lpobj->sizeBytes = GlobalSize (hDestData);
|
||
|
|
|
||
|
|
return OLE_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
LPOBJECT_GEN FARINTERNAL GenCreateBlank(lhclientdoc, lpobjname, objType, aClass)
|
||
|
|
LHCLIENTDOC lhclientdoc;
|
||
|
|
LPSTR lpobjname;
|
||
|
|
LONG objType;
|
||
|
|
ATOM aClass;
|
||
|
|
{
|
||
|
|
HOBJECT hobj;
|
||
|
|
LPOBJECT_GEN lpobj;
|
||
|
|
|
||
|
|
if ((hobj = GlobalAlloc (GMEM_MOVEABLE|GMEM_ZEROINIT,sizeof (OBJECT_GEN)))
|
||
|
|
== NULL)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
if (!(lpobj = (LPOBJECT_GEN) GlobalLock (hobj))){
|
||
|
|
GlobalFree (hobj);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
lpobj->head.objId[0] = 'L';
|
||
|
|
lpobj->head.objId[1] = 'E';
|
||
|
|
lpobj->head.mm = MM_TEXT;
|
||
|
|
lpobj->head.ctype = objType;
|
||
|
|
lpobj->head.lpvtbl = (LPOLEOBJECTVTBL)&vtblGEN;
|
||
|
|
lpobj->head.iTable = INVALID_INDEX;
|
||
|
|
lpobj->head.hobj = hobj;
|
||
|
|
lpobj->aClass = aClass;
|
||
|
|
|
||
|
|
if (objType == CT_STATIC)
|
||
|
|
DocAddObject ((LPCLIENTDOC) lhclientdoc,
|
||
|
|
(LPOLEOBJECT) lpobj, lpobjname);
|
||
|
|
|
||
|
|
return lpobj;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
OLESTATUS FARINTERNAL GenPaste (lpclient, lhclientdoc, lpobjname, lplpobj, lpClass, cfFormat, objType)
|
||
|
|
LPOLECLIENT lpclient;
|
||
|
|
LHCLIENTDOC lhclientdoc;
|
||
|
|
LPSTR lpobjname;
|
||
|
|
LPOLEOBJECT FAR * lplpobj;
|
||
|
|
LPSTR lpClass;
|
||
|
|
OLECLIPFORMAT cfFormat;
|
||
|
|
LONG objType;
|
||
|
|
{
|
||
|
|
HANDLE hData = NULL;
|
||
|
|
|
||
|
|
*lplpobj = NULL;
|
||
|
|
if (!cfFormat)
|
||
|
|
return OLE_ERROR_FORMAT;
|
||
|
|
|
||
|
|
if (!(hData = GetClipboardData(cfFormat)))
|
||
|
|
return OLE_ERROR_MEMORY;
|
||
|
|
|
||
|
|
if (!(*lplpobj = (LPOLEOBJECT) GenCreateObject (hData, lpclient,
|
||
|
|
FALSE, lhclientdoc,
|
||
|
|
lpobjname, objType)))
|
||
|
|
return OLE_ERROR_MEMORY;
|
||
|
|
|
||
|
|
((LPOBJECT_GEN)(*lplpobj))->cfFormat = cfFormat;
|
||
|
|
((LPOBJECT_GEN)(*lplpobj))->aClass = GlobalAddAtom (lpClass);
|
||
|
|
return OLE_OK;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
OLESTATUS FARINTERNAL GenQueryType (lpobj, lptype)
|
||
|
|
LPOLEOBJECT lpobj;
|
||
|
|
LPLONG lptype;
|
||
|
|
{
|
||
|
|
return OLE_ERROR_GENERIC;;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
OLESTATUS FARINTERNAL GenSetData (lpobj, cfFormat, hData)
|
||
|
|
LPOBJECT_GEN lpobj;
|
||
|
|
OLECLIPFORMAT cfFormat;
|
||
|
|
HANDLE hData;
|
||
|
|
{
|
||
|
|
|
||
|
|
if (lpobj->cfFormat != cfFormat)
|
||
|
|
return OLE_ERROR_FORMAT;
|
||
|
|
|
||
|
|
if (!hData)
|
||
|
|
return OLE_ERROR_BLANK;
|
||
|
|
|
||
|
|
GlobalFree (lpobj->hData);
|
||
|
|
lpobj->hData = hData;
|
||
|
|
lpobj->sizeBytes = GlobalSize (hData);
|
||
|
|
return OLE_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
OLESTATUS FARINTERNAL GenGetData (lpobj, cfFormat, lphandle)
|
||
|
|
LPOBJECT_GEN lpobj;
|
||
|
|
OLECLIPFORMAT cfFormat;
|
||
|
|
LPHANDLE lphandle;
|
||
|
|
{
|
||
|
|
if (cfFormat != lpobj->cfFormat)
|
||
|
|
return OLE_ERROR_FORMAT;
|
||
|
|
|
||
|
|
if (!(*lphandle = lpobj->hData))
|
||
|
|
return OLE_ERROR_BLANK;
|
||
|
|
|
||
|
|
return OLE_OK;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
OLECLIPFORMAT FARINTERNAL GenEnumFormat (lpobj, cfFormat)
|
||
|
|
LPOBJECT_GEN lpobj;
|
||
|
|
OLECLIPFORMAT cfFormat;
|
||
|
|
{
|
||
|
|
if (!cfFormat)
|
||
|
|
return lpobj->cfFormat;
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
OLESTATUS FARINTERNAL GenQueryBounds (lpobj, lpRc)
|
||
|
|
LPOBJECT_GEN lpobj;
|
||
|
|
LPRECT lpRc;
|
||
|
|
{
|
||
|
|
lpRc->right = 0;
|
||
|
|
lpRc->left = 0;
|
||
|
|
lpRc->top = 0;
|
||
|
|
lpRc->bottom = 0;
|
||
|
|
return OLE_ERROR_GENERIC;
|
||
|
|
}
|
||
|
|
|