84 lines
2 KiB
C++
84 lines
2 KiB
C++
/*******************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 1998, 1999, 2000
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*
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* TITLE: FINDIMGS.H
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*
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* VERSION: 1.0
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*
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* AUTHOR: ShaunIv
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*
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* DATE: 1/13/1999
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*
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* DESCRIPTION: Specialization of CFindFiles class that looks for image files and
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* stores them in a dynamic array which is shuffled on initialization
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*
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*******************************************************************************/
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#include "precomp.h"
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#pragma hdrstop
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#include "findimgs.h"
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#include "ssutil.h"
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#include "isdbg.h"
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CFindImageFiles::CFindImageFiles(void)
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: m_nCurrentFile(0)
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{
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}
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CFindImageFiles::~CFindImageFiles(void)
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{
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}
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bool CFindImageFiles::NextFile( CSimpleString &strFilename )
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{
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bool bResult = false;
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strFilename = TEXT("");
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if (m_ImageFiles.Size())
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{
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if (m_nCurrentFile >= m_ImageFiles.Size())
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{
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m_nCurrentFile = 0;
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}
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strFilename = m_ImageFiles[m_nCurrentFile];
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m_nCurrentFile++;
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bResult = (strFilename.Length() != 0);
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}
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return(bResult);
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}
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bool CFindImageFiles::PreviousFile( CSimpleString &strFilename )
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{
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bool bResult = false;
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strFilename = TEXT("");
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if (m_ImageFiles.Size()==1)
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{
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m_nCurrentFile = 0;
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strFilename = m_ImageFiles[0];
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bResult = (strFilename.Length() != 0);
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}
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else if (m_ImageFiles.Size()>=2)
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{
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m_nCurrentFile--;
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if (m_nCurrentFile < 0)
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m_nCurrentFile = m_ImageFiles.Size()-1;
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int nPrevFile = m_nCurrentFile-1;
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if (nPrevFile < 0)
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nPrevFile = m_ImageFiles.Size()-1;
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strFilename = m_ImageFiles[nPrevFile];
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bResult = (strFilename.Length() != 0);
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}
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return(bResult);
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}
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void CFindImageFiles::Shuffle(void)
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{
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for (int i=0;i<m_ImageFiles.Size();i++)
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{
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ScreenSaverUtil::Swap( m_ImageFiles[i], m_ImageFiles[m_RandomNumberGen.Generate(i,m_ImageFiles.Size())]);
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}
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}
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