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L_PicturizeBitmapList

Summary

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

Syntax

#include "l_bitmap.h"

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

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle that references the bitmap to be picturized.

L_UINT uCellWidth

Width of the thumbnail bitmap.

L_UINT uCellHeight

Height of the thumbnail bitmap.

L_UINT 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.

HBITMAPLIST hList

Handle to the list of bitmaps used to create the thumbnail images which are in turn used to picturize the specified image.

L_UINT32 uFlags

Reserved for future use. Must be 0.

Returns

Value	Meaning
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. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available in the Document and Medical Imaging 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.

Picturize List Function - Before

Picturize List Function - After

View additional platform support for this Picturize List 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

Win32, x64, Linux.

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(MAKE_IMAGE_PATH(TEXT("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, 0); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("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; 
}