mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
169 lines
3.6 KiB
169 lines
3.6 KiB
/*++
|
|
* File name:
|
|
* bmpcache.c
|
|
* Contents:
|
|
* Bitmap cache interface for tclinet
|
|
* Bitmap compare code
|
|
*
|
|
* Copyright (C) 1998-1999 Microsoft Corp.
|
|
--*/
|
|
#include <windows.h>
|
|
#include <memory.h>
|
|
|
|
#include "protocol.h"
|
|
#include "tclient.h"
|
|
#include "gdata.h"
|
|
#include "bmpdb.h"
|
|
|
|
PGROUPENTRY g_pCache = NULL;
|
|
|
|
// The bitmap manager is not thread safe
|
|
#define ENTER_CRIT EnterCriticalSection(g_lpcsGuardWaitQueue);
|
|
#define LEAVE_CRIT LeaveCriticalSection(g_lpcsGuardWaitQueue);
|
|
|
|
/*++
|
|
* Function:
|
|
* InitCache
|
|
* Description:
|
|
* Inits global data and the cache manager
|
|
* Called by:
|
|
* InitDone
|
|
--*/
|
|
VOID InitCache(VOID)
|
|
{
|
|
ENTER_CRIT
|
|
OpenDB(FALSE);
|
|
g_pCache = GetGroupList();
|
|
LEAVE_CRIT
|
|
}
|
|
|
|
/*++
|
|
* Function:
|
|
* DeleteCache
|
|
* Description:
|
|
* Deletes all linked lists and closes the manager opened
|
|
* by InitCache
|
|
* Called by:
|
|
* InitDone
|
|
--*/
|
|
VOID DeleteCache(VOID)
|
|
{
|
|
PGROUPENTRY pIter;
|
|
|
|
ENTER_CRIT
|
|
|
|
// Clean the cache
|
|
pIter = g_pCache;
|
|
while(pIter)
|
|
{
|
|
FreeBitmapList(pIter->pBitmap);
|
|
pIter = pIter->pNext;
|
|
}
|
|
FreeGroupList(g_pCache);
|
|
g_pCache = NULL;
|
|
CloseDB();
|
|
|
|
LEAVE_CRIT
|
|
}
|
|
|
|
/*++
|
|
* Function:
|
|
* BitmapCacheLookup
|
|
* Description:
|
|
* Retrieves all bitmaps with specific ID
|
|
--*/
|
|
PBMPENTRY BitmapCacheLookup(LPCWSTR szWText)
|
|
{
|
|
PGROUPENTRY pIter;
|
|
PBMPENTRY rv = NULL;
|
|
FOFFSET lGrpOffs;
|
|
|
|
ENTER_CRIT
|
|
|
|
pIter = g_pCache;
|
|
while(pIter && wcscmp(pIter->WText, szWText))
|
|
{
|
|
pIter = pIter->pNext;
|
|
}
|
|
|
|
if (!pIter)
|
|
goto exitpt;
|
|
|
|
if (!pIter->pBitmap)
|
|
pIter->pBitmap = GetBitmapList(NULL, pIter->FOffsBmp);
|
|
|
|
rv = pIter->pBitmap;
|
|
|
|
exitpt:
|
|
LEAVE_CRIT
|
|
return rv;
|
|
}
|
|
|
|
/*++
|
|
* Function:
|
|
* Glyph2String
|
|
* Description:
|
|
* Gets the ID for matching bimtap
|
|
* Arguments:
|
|
* pBmpFeed - Bitmap
|
|
* wszString - buffer for the ID
|
|
* max - buffer length
|
|
* Return value:
|
|
* TRUE if matching bitmap is found
|
|
* Called by:
|
|
* GlyphReceived running within feedback thread
|
|
--*/
|
|
BOOL Glyph2String(PBMPFEEDBACK pBmpFeed, LPWSTR wszString, UINT max)
|
|
{
|
|
UINT nChkSum, nFeedSize;
|
|
PGROUPENTRY pGroup;
|
|
PBMPENTRY pBitmap;
|
|
BOOL rv = FALSE;
|
|
|
|
nFeedSize = pBmpFeed->bmpsize + pBmpFeed->bmiSize;
|
|
nChkSum = CheckSum(&(pBmpFeed->BitmapInfo), nFeedSize);
|
|
|
|
ENTER_CRIT
|
|
|
|
pGroup = g_pCache;
|
|
// Go thru all groups
|
|
while (pGroup)
|
|
{
|
|
pBitmap = pGroup->pBitmap;
|
|
if (!pBitmap)
|
|
// Read the bitmap list if necessesary
|
|
pBitmap = pGroup->pBitmap = GetBitmapList(NULL, pGroup->FOffsBmp);
|
|
|
|
// and bitmaps
|
|
while(pBitmap)
|
|
{
|
|
// Compare the bitmaps
|
|
if (pBitmap->nChkSum == nChkSum &&
|
|
pBitmap->xSize == pBmpFeed->xSize &&
|
|
pBitmap->ySize == pBmpFeed->ySize &&
|
|
pBitmap->bmiSize == pBmpFeed->bmiSize &&
|
|
pBitmap->bmpSize == pBmpFeed->bmpsize &&
|
|
!memcmp(pBitmap->pData, &(pBmpFeed->BitmapInfo), nFeedSize))
|
|
{
|
|
// OK, copy the string
|
|
|
|
UINT strl = wcslen(pGroup->WText);
|
|
|
|
if (strl > max - 1)
|
|
strl = max - 1;
|
|
|
|
wcsncpy(wszString, pGroup->WText, strl);
|
|
wszString[strl] = 0;
|
|
rv = TRUE;
|
|
goto exitpt;
|
|
}
|
|
pBitmap = pBitmap->pNext;
|
|
}
|
|
|
|
pGroup = pGroup->pNext;
|
|
}
|
|
|
|
exitpt:
|
|
LEAVE_CRIT
|
|
return rv;
|
|
}
|