/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



#include <svpm.h>

#define _SV_SALSHL_CXX
#include <saldata.hxx>
#include <tools/debug.hxx>

// =======================================================================

SalShlData aSalShlData;

HMODULE ImplGetModule(void);
static HMODULE mhMod = ImplGetModule();

// =======================================================================

APIRET APIENTRY DosQueryModFromEIP (HMODULE *phMod, ULONG *pObjNum, 
          ULONG BuffLen, PCHAR pBuff, ULONG *pOffset, ULONG Address); 

HMODULE ImplGetModule(void)
{
	HMODULE	hMod;
	ULONG	ObjNum;
	CHAR	Buff[2*_MAX_PATH];
	ULONG	Offset;
	APIRET	rc;

	// get module handle (and name)
	rc = DosQueryModFromEIP( &hMod, &ObjNum, sizeof( Buff), Buff, &Offset, (ULONG)ImplGetModule);
	if (rc)
		return NULL;
	// return module handle
	aSalShlData.mhMod = hMod;
	return hMod;
}

// =======================================================================

HPOINTER ImplLoadSalCursor( int nId )
{
	DBG_ASSERT( aSalShlData.mhMod, "no DLL instance handle" );

	HPOINTER hPointer = WinLoadPointer( HWND_DESKTOP, aSalShlData.mhMod, nId );

	DBG_ASSERT( hPointer, "pointer not found in sal resource" );
#if OSL_DEBUG_LEVEL>0
	if (!hPointer)
		debug_printf( "ImplLoadSalCursor: pointer %d not found in sal resource\n", nId);
#endif
	return hPointer;
}

// -----------------------------------------------------------------------

BOOL ImplLoadSalIcon( int nId, HPOINTER& rIcon)
{
	DBG_ASSERT( aSalShlData.mhMod, "no DLL instance handle" );

	SalData* pSalData = GetSalData();

    // check the cache first
    SalIcon *pSalIcon = pSalData->mpFirstIcon;
    while( pSalIcon )
    {
        if( pSalIcon->nId != nId )
            pSalIcon = pSalIcon->pNext;
        else
        {
            rIcon       = pSalIcon->hIcon;
            return (rIcon != 0);
        }
    }

	// Try at first to load the icons from the application exe file
	rIcon = WinLoadPointer( HWND_DESKTOP, NULL, nId );
	if ( !rIcon )
	{
		// If the application don't provide these icons, then we try
		// to load the icon from the VCL resource
		rIcon = WinLoadPointer( HWND_DESKTOP, aSalShlData.mhMod, nId );
	}

    if( rIcon )
    {
        // add to icon cache
        pSalIcon = new SalIcon();
        pSalIcon->nId = nId;
        pSalIcon->hIcon = rIcon;
        pSalIcon->pNext = pSalData->mpFirstIcon;
        pSalData->mpFirstIcon = pSalIcon;
    }

	return (rIcon != 0);
}

// =======================================================================