#include "ImgPF.h"

static L_BOOL  Gamma_OnInitDialog(HWND hDlg, HWND hwndFocus, LPARAM lParam);
static L_BOOL  Gamma_OnCommand(HWND hDlg, L_INT id, HWND hwndCtl, UINT codeNotify);
static L_BOOL  Gamma_OnHScroll(HWND hWnd, HWND hWndCtl, L_UINT nCode, L_INT nPos);
static L_VOID  L_ApplyFilter(HWND hWnd);

L_BOOL CALLBACK YUVGammaWndProc (HWND hWnd, L_UINT uMessage, WPARAM wParam, LPARAM lParam)
{
   switch (uMessage)
   {
      HANDLE_MSG (hWnd, WM_INITDIALOG, Gamma_OnInitDialog);
      HANDLE_MSG (hWnd, WM_COMMAND,    Gamma_OnCommand);
      HANDLE_MSG (hWnd, WM_HSCROLL,    Gamma_OnHScroll);

      case WM_USER_UPDATEVIEW:
         StatusProc.ProgressValue = 100;
         L_ApplyFilter (hWnd);
         break;
   }

   return FALSE;
}

static L_BOOL Gamma_OnInitDialog(HWND hWnd, HWND hwndFocus, LPARAM lParam)
{
   HWND           hWndParent;
   pCHILDDATA     pData;
   LPGAMMADATA    pGammaData;
   L_DOUBLE       dRangeMin = 1, dRangeMax = 500;

   hWndParent  = FORWARD_WM_MDIGETACTIVE(hWndClient,SendMessage);
   pData       = LOCKCHILDDATA (hWndParent);
   pGammaData  = (LPGAMMADATA)lParam;
   
   MoveDialogToMiddle(hWnd);
   SetWindowLong(hWnd,GWL_USERDATA,(LONG)pGammaData);

   //MEMDISK...//
   MemorizeAndCopyBitmap (hWndParent, &pGammaData->hBitmap);

   Progress_SetRange(StatusProc.ProgWnd, 0, 100);
   Progress_SetPos(StatusProc.ProgWnd, 0);

   StatusProc.bProgress     = TRUE;
   StatusProc.bInvalidate   = FALSE;
   StatusProc.bEnd          = FALSE;
   StatusProc.DlgWnd        = hWnd;
   StatusProc.ProgressValue = 100;
   StatusProc.ProgWnd       = GetDlgItem(hWnd, IDC_GAMMA_PRGRS);

   pGammaData->dGamma = 150;
   pGammaData->uClrSpace = 1;
   Button_SetCheck(GetDlgItem(hWnd, IDC_GAMMA_YUV_RAD), BST_CHECKED);

   Trackbar_SetRange (GetDlgItem(hWnd, IDC_GAMMA_SLD), TRUE, dRangeMin, dRangeMax);
   SetNumericEditBox(GetDlgItem(hWnd, IDC_GAMMA_EDT), dRangeMin, dRangeMax, 1, 0, FALSE);
   SetDlgItemInt (hWnd, IDC_GAMMA_EDT, 150, FALSE);

   ShowWindow(hWnd, SW_SHOW);
   UpdateWindow(hWnd);
   L_ApplyFilter(hWnd);
   return TRUE;
}

static L_BOOL Gamma_OnCommand(HWND hWnd, L_INT nID, HWND hwndCtl, UINT uCodeNotify)
{
   L_INT          nValue;
   HWND           hCtl;
   LPGAMMADATA    pGammaData;
   L_INT          nRangeMin = 0, nRangeMax = 500;

   pGammaData = (LPGAMMADATA) GetWindowLong (hWnd, GWL_USERDATA);

   switch (nID)
   {
   case IDOK:
      ShowStatusWindow(FALSE);
       StatusProc.bStillWork  = TRUE;
       StatusProc.bInvalidate = TRUE;
       StatusProc.bEnd = TRUE;
      EndDialog(hWnd, TRUE);
      break;

   case IDCANCEL:
      StatusProc.bProgress = FALSE;
      StatusProc.bKillProgress = TRUE;
      StatusProc.ProgressValue = 100;
      EndDialog(hWnd, FALSE);
      break;


   case IDC_GAMMA_RGB_RAD:
      if (pGammaData->uClrSpace != 2)
      {
         pGammaData->uClrSpace = 2;
         L_ApplyFilter(hWnd);
      }
      break;

   case IDC_GAMMA_YUV_RAD:
      if (pGammaData->uClrSpace != 1)
      {
         pGammaData->uClrSpace = 1;
         L_ApplyFilter(hWnd);
      }
      break;

   case IDC_GAMMA_EDT:
      if (uCodeNotify == EN_CHANGE)
      {
         nValue = GetDlgItemInt(hWnd, nID, NULL, TRUE);
         hCtl   = GetDlgItem(hWnd, IDC_GAMMA_SLD);
         
         Trackbar_SetPos(hCtl, TRUE, nValue);

         if (pGammaData->dGamma == nValue)
            return TRUE;
         pGammaData->dGamma = nValue;
         
         L_ApplyFilter (hWnd);
      }
   }
   
   return TRUE;
}

static L_BOOL  Gamma_OnHScroll(HWND hWnd, HWND hWndCtl, L_UINT nCode, L_INT nPos)
{
   SetDlgItemInt(hWnd, IDC_GAMMA_EDT, Trackbar_GetPos(hWndCtl), TRUE);
   return TRUE;
}

static L_VOID L_ApplyFilter (HWND hWnd)
{
   L_INT       nRet;
   HWND        hWndParent;
   pCHILDDATA     pData;
   LPGAMMADATA    pGammaData;

   pGammaData = (LPGAMMADATA) GetWindowLong(hWnd,GWL_USERDATA);
   hWndParent  = FORWARD_WM_MDIGETACTIVE(hWndClient,SendMessage);
   pData       = LOCKCHILDDATA (hWndParent);

   if ( 100 != StatusProc.ProgressValue )
   {
      StatusProc.bKillProgress = TRUE;
      return;
   }
   
   FreeMemorizedBitmap (hWndParent); //MEMDISK//
   L_CopyBitmap(&pData->LeadBitmap, &pGammaData->hBitmap, sizeof(BITMAPHANDLE));

   nRet = L_GammaCorrectBitmapExt(&pData->LeadBitmap, (L_UINT) pGammaData->dGamma, pGammaData->uClrSpace);

   if(nRet == SUCCESS)
   {
      InvalidateRect(hWndParent, NULL, FALSE);
      StatusProc.ProgressValue = 100;
      Progress_SetPos(StatusProc.ProgWnd , 0);
      if(StatusProc.bEnd)
      {
         StatusProc.bProgress = FALSE;
         StatusProc.bKillProgress = TRUE;
      }
   }
}