303 lines
8.6 KiB
C++
303 lines
8.6 KiB
C++
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/*******************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 1999,2000
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*
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* TITLE: SSHNDLER.CPP
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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: 12/4/1999
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*
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* DESCRIPTION:
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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 "sshndler.h"
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#include "ssutil.h"
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CScreenSaverHandler::CScreenSaverHandler( HWND hWnd, UINT nFindNotifyMessage, UINT nPaintTimer, UINT nChangeTimer, UINT nBackupStartTimer, LPCTSTR szRegistryPath, HINSTANCE hInstance )
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: m_hWnd(hWnd),
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m_hInstance(hInstance),
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m_strRegistryPath(szRegistryPath),
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m_nFindNotifyMessage(nFindNotifyMessage),
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m_nPaintTimerId(nPaintTimer),
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m_nChangeTimerId(nChangeTimer),
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m_nBackupStartTimerId(nBackupStartTimer),
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m_nBackupStartTimerPeriod(BACKUP_START_TIMER_PERIOD),
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m_pImageScreenSaver(NULL),
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m_bPaused(false),
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m_hFindThread(NULL),
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m_hFindCancel(NULL),
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m_bScreensaverStarted(false),
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m_nStartImage(0),
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m_nShuffleInterval(SHUFFLE_INTERVAL)
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{
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m_nStartImage = m_Random.Generate(MAX_START_IMAGE);
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}
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void CScreenSaverHandler::Initialize(void)
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{
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CWaitCursor wc;
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HDC hDC = GetDC(m_hWnd);
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if (hDC)
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{
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m_pImageScreenSaver = new CImageScreenSaver( m_hInstance, m_strRegistryPath );
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if (m_pImageScreenSaver)
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{
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m_pImageScreenSaver->SetScreenRect(m_hWnd);
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if (m_pImageScreenSaver->IsValid())
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{
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m_hFindCancel = CreateEvent( NULL, TRUE, FALSE, NULL );
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if (m_hFindCancel)
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{
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m_hFindThread = m_pImageScreenSaver->Initialize( m_hWnd, m_nFindNotifyMessage, m_hFindCancel );
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}
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SetTimer( m_hWnd, m_nBackupStartTimerId, m_nBackupStartTimerPeriod, NULL );
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}
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else
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{
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WIA_TRACE((TEXT("CScreenSaverHandler::CScreenSaverHandler, m_pImageScreenSaver->IsValid() returned failed\n")));
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delete m_pImageScreenSaver;
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m_pImageScreenSaver = NULL;
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}
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}
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else
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{
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WIA_TRACE((TEXT("CScreenSaverHandler::CScreenSaverHandler, unable to create m_pImageScreenSaver\n")));
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}
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ReleaseDC( m_hWnd, hDC );
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}
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else
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{
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WIA_TRACE((TEXT("CScreenSaverHandler::CScreenSaverHandler, GetDC failed\n")));
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}
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}
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CScreenSaverHandler::~CScreenSaverHandler(void)
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{
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if (m_pImageScreenSaver)
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{
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delete m_pImageScreenSaver;
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m_pImageScreenSaver = NULL;
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}
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if (m_hFindCancel)
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{
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SetEvent(m_hFindCancel);
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CloseHandle(m_hFindCancel);
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m_hFindCancel = NULL;
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}
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if (m_hFindThread)
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{
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WaitForSingleObject( m_hFindThread, INFINITE );
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CloseHandle(m_hFindThread);
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m_hFindThread = NULL;
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}
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}
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bool CScreenSaverHandler::HandleKeyboardMessage( UINT nMessage, WPARAM nVirtkey )
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{
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if (m_pImageScreenSaver && m_pImageScreenSaver->AllowKeyboardControl())
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{
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if (nMessage == WM_KEYDOWN)
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{
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switch (nVirtkey)
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{
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case VK_DOWN:
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if (nMessage == WM_KEYDOWN)
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{
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m_bPaused = !m_bPaused;
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if (!m_bPaused)
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{
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if (m_pImageScreenSaver && m_pImageScreenSaver->ReplaceImage(true,false))
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m_Timer.Set( m_hWnd, m_nPaintTimerId, m_pImageScreenSaver->PaintTimerInterval() );
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}
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}
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return true;
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case VK_LEFT:
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if (nMessage == WM_KEYDOWN)
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{
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if (m_pImageScreenSaver && m_pImageScreenSaver->ReplaceImage(false,true))
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m_Timer.Set( m_hWnd, m_nPaintTimerId, m_pImageScreenSaver->PaintTimerInterval() );
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}
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return true;
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case VK_RIGHT:
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if (nMessage == WM_KEYDOWN)
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{
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if (m_pImageScreenSaver && m_pImageScreenSaver->ReplaceImage(true,true))
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m_Timer.Set( m_hWnd, m_nPaintTimerId, m_pImageScreenSaver->PaintTimerInterval() );
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}
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return true;
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}
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}
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}
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return false;
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}
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void CScreenSaverHandler::HandleConfigChanged(void)
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{
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if (m_pImageScreenSaver)
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{
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m_pImageScreenSaver->SetScreenRect(m_hWnd);
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m_pImageScreenSaver->ReadConfigData();
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}
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}
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void CScreenSaverHandler::HandleTimer( WPARAM nEvent )
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{
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if (nEvent == m_nPaintTimerId)
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{
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if (m_pImageScreenSaver)
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{
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CSimpleDC ClientDC;
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if (ClientDC.GetDC(m_hWnd))
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{
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bool bResult = m_pImageScreenSaver->TimerTick( ClientDC );
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if (bResult)
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{
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m_Timer.Set( m_hWnd, m_nChangeTimerId, m_pImageScreenSaver->ChangeTimerInterval() );
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}
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}
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}
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}
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else if (nEvent == m_nChangeTimerId)
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{
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m_Timer.Kill();
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if (!m_bPaused && m_pImageScreenSaver && m_pImageScreenSaver->ReplaceImage(true,false))
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{
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m_Timer.Set( m_hWnd, m_nPaintTimerId, m_pImageScreenSaver->PaintTimerInterval() );
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//
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// Mark that we've been started
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//
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if (!m_bScreensaverStarted)
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{
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m_bScreensaverStarted = true;
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}
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}
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}
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else if (nEvent == m_nBackupStartTimerId)
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{
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//
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// Make sure we don't get any more of these
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//
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KillTimer( m_hWnd, m_nBackupStartTimerId );
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//
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// If the screensaver hasn't started, start it.
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//
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if (!m_bScreensaverStarted)
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{
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//
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// Shuffle the list
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//
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m_pImageScreenSaver->ResetFileQueue();
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//
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// If we haven't gotten any images, start the timer so we can display the error message
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//
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SendMessage( m_hWnd, WM_TIMER, m_nChangeTimerId, 0 );
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}
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}
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}
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void CScreenSaverHandler::HandlePaint(void)
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{
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if (m_pImageScreenSaver)
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{
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CSimpleDC PaintDC;
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if (PaintDC.BeginPaint(m_hWnd))
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{
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m_pImageScreenSaver->Paint( PaintDC );
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}
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}
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}
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void CScreenSaverHandler::HandleFindFile( CFoundFileMessageData *pFoundFileMessageData )
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{
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WIA_PUSHFUNCTION(TEXT("CScreenSaverHandler::HandleFindFile"));
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//
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// Make sure we have a screensaver object
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//
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if (m_pImageScreenSaver)
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{
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//
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// If this is a found file message
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//
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if (pFoundFileMessageData)
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{
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//
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// Add it to the list, and check for cancel
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//
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bool bResult = m_pImageScreenSaver->FoundFile( pFoundFileMessageData->Name() );
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//
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// If the find operation was cancelled, set the cancel event
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//
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if (!bResult)
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{
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SetEvent( m_hFindCancel );
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}
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//
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// If this is the image on which we should start, start up the screensaver pump
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//
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if (!m_bScreensaverStarted && m_pImageScreenSaver->Count() && m_nStartImage+1 == m_pImageScreenSaver->Count())
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{
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WIA_TRACE((TEXT("Starting after image %d was found"), m_nStartImage ));
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//
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// Shuffle the images
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//
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m_pImageScreenSaver->ResetFileQueue();
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//
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// If this is our first image, start things up
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//
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SendMessage( m_hWnd, WM_TIMER, m_nChangeTimerId, 0 );
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}
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//
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// If we have some images, and the shuffle count interval has been reached, shuffle the images
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//
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if (m_pImageScreenSaver->Count() && (m_pImageScreenSaver->Count() % m_nShuffleInterval) == 0)
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{
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WIA_TRACE((TEXT("Shuffling the image list at %d images"), m_pImageScreenSaver->Count() ));
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//
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// Shuffle the images
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//
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m_pImageScreenSaver->ResetFileQueue();
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}
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delete pFoundFileMessageData;
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}
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else
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{
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//
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// Last message
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//
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m_pImageScreenSaver->ResetFileQueue();
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//
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// If we haven't gotten any images, start the timer so we can display the error message
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//
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if (!m_bScreensaverStarted)
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{
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SendMessage( m_hWnd, WM_TIMER, m_nChangeTimerId, 0 );
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}
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}
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}
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}
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