LDialogWeb::DoModalPNGWebTuner

#include "ltwrappr.h"

virtual L_INT LDialogWeb::DoModalPNGWebTuner(hWndOwner)

HWND hWndOwner;

/* handle of the window which owns the dialog */

Displays the PNG Web Tuner dialog box, and gets the tuning options used by LBitmapBase::ColorRes, LBitmapBase::Fill, LBitmapBase::Save, LBitmapRgn::SetRgnColorRGBRange.

Parameter	Description
hWndOwner	Handle of the window which owns the dialog.

Returns

SUCCESS_DLG_OK	The "OK" button was pressed, and the dialog exited successfully.
SUCCESS_DLG_CLOSE	The "Close" button was pressed, and the dialog exited successfully.
SUCCESS_DLG_CANCEL	The "Cancel" button was pressed, and the dialog exited successfully.
< 1	An error occurred. Refer to Return Codes.

Comments

LDialogWeb::SetPNGWebTunerParams must be called before using this function to set the initial values for the dialog. You can get the updated PNGWEBTUNERDLGPARAMS with the values entered by the user through the dialog by using LDialogWeb::GetPNGWebTunerParams.

The PNG Web Tuner dialog is shown in the following figure:

$image\PNGWebTuner.gif$

Required DLLs and Libraries

LTDLGWEB
LTDLGKRN
LTDLGUTL
LTDLGCTRL
LTDLGCOM
LTFIL
LTDIS
LTIMG

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

See Also

Functions:	LDialogBase::Initialize, LDialogFile::DoModalSave, LDialogWeb::DoModalGIFWebTuner, LDialogWeb::DoModalJPEGWebTuner, LBase::EnableCallBack, LDialogBase::EnablePreview, LDialogBase::EnableAutoProcess, LDialogBase::EnableToolbar, LDialogBase::Free, LDialogWeb::GetPNGWebTunerParams, LDialogWeb::SetPNGWebTunerParams, Class Members
Topics:	Using Imaging Common Dialog

Example

void TestFunction(LBitmap * pBitmap, HWND hWnd)
{
   LDialogWeb DlgWeb;

   PNGWEBTUNERDLGPARAMS  DlgParams;
   DlgWeb.SetBitmap(pBitmap);
   memset ( &DlgParams, 0, sizeof ( PNGWEBTUNERDLGPARAMS ) ) ;
   LDialogWeb::Initialize (0);
   DlgParams.uStructSize      = sizeof ( PNGWEBTUNERDLGPARAMS ) ;
   DlgParams.uDlgFlags  = DLG_PNGWEBTUNER_SHOW_EXPORT|
                          DLG_PNGWEBTUNER_SHOW_INFORMATION |
                          DLG_PNGWEBTUNER_SHOW_TOOL_COLORPICKER |
                          DLG_PNGWEBTUNER_SHOW_TRANSPARENCY |
                          DLG_PNGWEBTUNER_SHOW_ADDWINDOWCOLOR ;



   DlgWeb.EnableCallBack(FALSE);
   DlgWeb.EnablePreview (TRUE);
   DlgWeb.EnableAutoProcess(TRUE);
   DlgWeb.EnableToolbar (TRUE);
   DlgWeb.SetPNGWebTunerParams(&DlgParams) ;
   DlgWeb.DoModalPNGWebTuner(hWnd);

   // Gets the updated values for the structure
   DlgWeb.GetPNGWebTunerParams (&DlgParams, sizeof(DlgParams)) ;
   LDialogImageEffect::Free();
}

Example 2:

COLORREF AddTolerance ( COLORREF crColor, L_INT nTolerance )
{
   L_INT nRed ;
   L_INT nGreen ;
   L_INT nBlue ;

   nRed   = max ( min ( ( L_INT ) GetRValue ( crColor ) + nTolerance, 255 ), 0 ) ;
   nGreen = max ( min ( ( L_INT ) GetGValue ( crColor ) + nTolerance, 255 ), 0 ) ;
   nBlue  = max ( min ( ( L_INT ) GetBValue ( crColor ) + nTolerance, 255 ), 0 ) ;

   return RGB ( nRed, nGreen, nBlue ) ;
}

L_VOID ExportBitmap ( L_TCHAR L_FAR * szFileName, LBitmapBase *pLBitmap, LPPNGWEBTUNERDLGPARAMS pParam )
{
   {// TRANSPERANCY

      if ( pParam->bTransparent )
      {
         COLORREF crTransparentStart ;
         COLORREF crTransparentEnd ;
         //LBitmapRgn Region(pLBitmap);


         crTransparentStart = AddTolerance ( pParam->crTransparent,
                                             - pParam->nTransparencyTolerance ) ;

         crTransparentEnd   = AddTolerance ( pParam->crTransparent,
                                             pParam->nTransparencyTolerance ) ;
         // reset
         pLBitmap->Region()-> Free() ;

         // set attributes
         pLBitmap-> EnablePlayBackTransparency(TRUE);
         pLBitmap-> SetPlayBackTransparentColor(pParam->crTransparent) ;

         // replace colors
         if ( pParam->nTransparencyTolerance >= 0 )
         {
            pLBitmap->Region()->SetRgnCombineMode(L_RGN_SET );
            pLBitmap->Region()->SetRgnColorRGBRange( crTransparentStart,
                                          crTransparentEnd) ;

            if ( pLBitmap->Region()-> BitmapHasRgn( ) )
            {
               pLBitmap->Fill( pParam->crTransparent ) ;
            }

            pLBitmap->Region()-> Free( ) ;
         }
      }

   }// TRANSPERANCY

   {// COLOR RESOLUTION

      L_UINT32 uFlags ;

      if ( pParam->nBitsPerPixel < 24 )
      {
         uFlags  = ( ( pParam->bAddWindowsColors ) && ( CRF_OPTIMIZEDPALETTE == pParam->nPalType ) ) ? CRF_IDENTITYPALETTE : 0 ;
         uFlags |= pParam->nDitherType ;
         uFlags |= pParam->nPalType ;

         pLBitmap->ColorRes( pParam->nBitsPerPixel,
                            uFlags,
                            NULL,
                            NULL,
                            pParam->nNumOfColors) ;

      }

   }// COLOR RESOLUTION

   {// SAVE TO DISK

   pLBitmap->Save( szFileName,
                  FILE_PNG,
                  pParam->nBitsPerPixel,
                  0,
                  NULL ) ;

   }// SAVE TO DISK
}
void ShowDialog(LBitmap * pBitmap, HWND hWnd)
{
   L_INT nRet = 0;
   LDialogWeb DlgWeb;

   PNGWEBTUNERDLGPARAMS DlgParams;
   DlgWeb.SetBitmap (pBitmap);
   memset ( &DlgParams, 0, sizeof ( PNGWEBTUNERDLGPARAMS ) ) ;
   LDialogWeb::Initialize (0);
   DlgParams.uStructSize      = sizeof ( PNGWEBTUNERDLGPARAMS ) ;
   DlgParams.uDlgFlags  = DLG_PNGWEBTUNER_SHOW_INFORMATION |
                          DLG_PNGWEBTUNER_SHOW_TOOL_COLORPICKER |
                          DLG_PNGWEBTUNER_SHOW_TRANSPARENCY |
                          DLG_PNGWEBTUNER_SHOW_ADDWINDOWCOLOR ;



   DlgWeb.EnableCallBack(FALSE);
   DlgWeb.EnablePreview (TRUE);
   DlgWeb.EnableAutoProcess (TRUE);
   DlgWeb.EnableToolbar (TRUE);
   DlgWeb.SetPNGWebTunerParams (&DlgParams) ;
   nRet = DlgWeb.DoModalPNGWebTuner(hWnd);

   // Gets the updated values for the structure
   DlgWeb.GetPNGWebTunerParams (&DlgParams, sizeof(DlgParams)) ;

   LDialogImageEffect::Free ();

   if ( SUCCESS_DLG_OK == nRet )
   {
      ExportBitmap ( TEXT("tuned.png"), DlgWeb.GetBitmap() , &DlgParams ) ;
   }

}