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|
/*
/--------------------------------------------------------------------
|
| $Id: plsubbmp.cpp,v 1.5 2004/09/11 12:41:35 uzadow Exp $
|
| Copyright (c) 1996-2002 Ulrich von Zadow
|
\--------------------------------------------------------------------
*/
#include "plsubbmp.h"
#include "plrect.h"
#include "plexcept.h"
#include <iostream>
using namespace std;
PLSubBmp::PLSubBmp
()
{
m_pLineArray=0;
m_pClrTab=0;
}
PLSubBmp::~PLSubBmp
()
{
// Free the memory.
freeMembers();
}
void PLSubBmp::Create
( PLBmpBase & SrcBmp,
const PLRect & SrcRect
)
{
PLASSERT (!m_pLineArray);
int bpp = SrcBmp.GetBitsPerPixel();
if (bpp <= 8)
m_pClrTab = new PLPixel32 [1 << bpp];
else
m_pClrTab = NULL;
initLocals (SrcRect.Width(), SrcRect.Height(),
SrcBmp.GetPixelFormat());
if (bpp <= 8)
SetPalette (SrcBmp.GetPalette());
m_pLineArray = new PLBYTE * [m_Size.y];
PLBYTE** ppSrcLines = SrcBmp.GetLineArray();
int XOfs = SrcRect.tl.x*(bpp/8);
for (int y=0; y<m_Size.y; y++)
m_pLineArray[y] = ppSrcLines[SrcRect.tl.y+y]+XOfs;
PLASSERT_VALID(this);
}
void PLSubBmp::Create
( int Width,
int Height,
const PLPixelFormat& pf,
PLBYTE * pBits,
int Stride
)
{
if (m_pLineArray)
{
if (Width != GetWidth() || Height != GetHeight() ||
pf != GetPixelFormat())
{
freeMembers();
}
}
if (!m_pLineArray)
{ // freeMembers sets m_pLineArray to 0.
if (pf.GetBitsPerPixel() <= 8)
m_pClrTab = new PLPixel32 [1 << pf.GetBitsPerPixel()];
else
m_pClrTab = NULL;
initLocals (Width, Height, pf);
if (pf.GetBitsPerPixel() <= 8)
SetGrayPalette ();
m_pLineArray = new PLBYTE * [m_Size.y];
}
PLBYTE * pCurLine = m_pLineArray[0];
for (int y=0; y<m_Size.y; y++)
{
m_pLineArray[y] = pBits;
pBits += Stride;
}
PLASSERT_VALID(this);
}
/////////////////////////////////////////////////////////////////////
// Local functions
void PLSubBmp::freeMembers
()
{
if (m_pClrTab)
{
delete [] m_pClrTab;
m_pClrTab = NULL;
}
if (m_pLineArray)
{
delete [] m_pLineArray;
m_pLineArray = NULL;
}
}
/*
/--------------------------------------------------------------------
|
| $Log: plsubbmp.cpp,v $
| Revision 1.5 2004/09/11 12:41:35 uzadow
| removed plstdpch.h
|
| Revision 1.4 2004/09/09 16:52:49 artcom
| refactored PixelFormat
|
| Revision 1.3 2004/06/19 15:39:45 uzadow
| Bugfix
|
| Revision 1.2 2004/06/16 16:38:01 artcom
| PLSubBmp now allows multiple Create() calls.
|
| Revision 1.1 2004/06/15 14:17:11 uzadow
| First working version of PLSubBmp.
|
|
\--------------------------------------------------------------------
*/
|
