L_PicturizeBitmapList

#include "l_bitmap.h"

L_LTIMGEFX_API L_INT L_PicturizeBitmapList(pBitmap, uCellWidth, uCellHeight, uLightnessFact, hList)

pBITMAPHANDLE pBitmap;	/* pointer to the bitmap handle */
L_UINT uCellWidth;	/* thumbnail width */
L_UINT uCellHeight;	/* thumbnail height */
L_UINT uLightnessFact;	/* lightness factor */
HBITMAPLIST hList;	/* handle to a list of bitmaps */

Picturizes the specified bitmap using thumbnail images created from the specified bitmap list.

Parameter	Description
pBitmap	Pointer to the bitmap handle that references the bitmap to be picturized.
uCellWidth	Width of the thumbnail bitmap.
uCellHeight	Height of the thumbnail bitmap.
uLightnessFact	Value that represents how much to lighten the thumbnail bitmap. Valid values are between 0 and 1000. This value is divided internally by 1000. Values between 0 and 499 darken the image. Values between 500 and 1000 lighten the image.
hList	Handle to the list of bitmaps used to create the thumbnail images which are in turn used to picturize the specified image.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

The image, or selected region, is broken down into rectangles of size uCellWidth x uCellHeight. For each rectangle, the image in the list that best approximates that rectangle is inserted in the original image. The thumbnail image may be corrected, to approximate a rectangle.

The uLightnessFact parameter can be used to change the lightness of the big image by changing the lightness of each rectangle.

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Supportfor 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Required DLLs and Libraries

LTIMGEFX

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

Platforms

Windows 2000 / XP/Vista.

See Also

Functions:	L_PicturizeBitmap, L_PicturizeBitmapSingle, L_BricksTextureBitmap, L_CanvasBitmap, L_DisplaceMapBitmap, L_FragmentBitmap, L_VignetteBitmap
Topics:	Raster Image Functions: Combining Images
	Processing an Image
	Raster Image Functions: Processing an Image

Example

This example loads a bitmap and picturize it with a predefined list .

 L_INT PicturizeBitmapListExample(L_VOID)
{
   L_INT nRet;
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle to hold the loaded image. */
   BITMAPHANDLE TmpBitmap;    /* Temporary bitmap for building the list */
   HBITMAPLIST hList;
   L_INT i; 

   /* Load the bitmap, keeping the bits per pixel of the file */
   nRet = L_LoadBitmap (TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\IMAGE1.CMP"), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
   if(nRet !=SUCCESS)
      return nRet;
    nRet = L_CreateBitmapList(&hList);
    if(nRet !=SUCCESS)
       return nRet;
   for (i = 0; i <= 36; ++ i)
   {
      nRet = L_CopyBitmap(&TmpBitmap, &LeadBitmap, sizeof(BITMAPHANDLE));
      if(nRet !=SUCCESS)
         return nRet;
      /* Rotate, using the transparent color as the fill color */
      nRet = L_RotateBitmap (&TmpBitmap, 1000 * i, 0, RGB(0,0,0));
      if(nRet !=SUCCESS)
         return nRet;
      nRet = L_InsertBitmapListItem(hList, (L_UINT)-1, &TmpBitmap);
      if(nRet !=SUCCESS)
         return nRet;
   }

   /* picturize the bitmap with the predefined list (hList) */
   nRet = L_PicturizeBitmapList(&LeadBitmap,20,15,200,hList);
   if(nRet !=SUCCESS)
      return nRet;
   nRet = L_SaveBitmap(TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\Result.BMP"), &LeadBitmap, FILE_BMP, 24, 0, NULL);
   if(nRet !=SUCCESS)
      return nRet;
   //free bitmap 
   if(LeadBitmap.Flags.Allocated)  
      L_FreeBitmap(&LeadBitmap);  
    L_DestroyBitmapList(hList);
   return SUCCESS;
}