splash.cpp

Ever wanted to just type tail -f error_log on Windows?Envious of your Unix friends who can track cha

/*
 * Tail for Win32 - a Windows version of the UNIX 'tail -f' command.
 * 
 * Author: Paul Perkins ([e-mail])
 * 
 * Copyright(c)
 *
 * This program is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU General Public License as published by the Free 
 * Software Foundation; either version 2 of the License, or (at your option) 
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 
 * more details.
 * 
 * You should have received a copy of the GNU General Public License along with 
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple 
 * Place, Suite 330, Boston, MA 02111-1307 USA
 * 
 * $Id: Splash.cpp,v 1.3 2003/11/11 09:45:09 paulperkins Exp $
 * 
 */

#include "stdafx.h"  // e. g. stdafx.h
#include "resource.h"  // e.g. resource.h

#include "Splash.h"  // e.g. splash.h

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
//   Splash Screen class

BOOL CSplashWnd::c_bShowSplashWnd;
CSplashWnd* CSplashWnd::c_pSplashWnd;
CSplashWnd::CSplashWnd()
{
}

CSplashWnd::~CSplashWnd()
{
	// Clear the static window pointer.
	ASSERT(c_pSplashWnd == this);
	c_pSplashWnd = NULL;
}

BEGIN_MESSAGE_MAP(CSplashWnd, CWnd)
	//{{AFX_MSG_MAP(CSplashWnd)
	ON_WM_CREATE()
	ON_WM_PAINT()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CSplashWnd::EnableSplashScreen(BOOL bEnable /*= TRUE*/)
{
	c_bShowSplashWnd = bEnable;
}

void CSplashWnd::ShowSplashScreen(CWnd* pParentWnd /*= NULL*/)
{
	if (!c_bShowSplashWnd || c_pSplashWnd != NULL)
		return;

	// Allocate a new splash screen, and create the window.
	c_pSplashWnd = new CSplashWnd;
	if (!c_pSplashWnd->Create(pParentWnd))
		delete c_pSplashWnd;
	else
		c_pSplashWnd->UpdateWindow();
}

BOOL CSplashWnd::PreTranslateAppMessage(MSG* pMsg)
{
	if (c_pSplashWnd == NULL)
		return FALSE;

	// If we get a keyboard or mouse message, hide the splash screen.
	if (pMsg->message == WM_KEYDOWN ||
	    pMsg->message == WM_SYSKEYDOWN ||
	    pMsg->message == WM_LBUTTONDOWN ||
	    pMsg->message == WM_RBUTTONDOWN ||
	    pMsg->message == WM_MBUTTONDOWN ||
	    pMsg->message == WM_NCLBUTTONDOWN ||
	    pMsg->message == WM_NCRBUTTONDOWN ||
	    pMsg->message == WM_NCMBUTTONDOWN)
	{
		c_pSplashWnd->HideSplashScreen();
		return TRUE;	// message handled here
	}

	return FALSE;	// message not handled
}

BOOL CSplashWnd::Create(CWnd* pParentWnd /*= NULL*/)
{
	if (!m_bitmap.LoadBitmap(IDB_SPLASH))
		return FALSE;

	BITMAP bm;
	m_bitmap.GetBitmap(&bm);

	return CreateEx(0,
		AfxRegisterWndClass(0, AfxGetApp()->LoadStandardCursor(IDC_ARROW)),
		NULL, WS_POPUP | WS_VISIBLE, 0, 0, bm.bmWidth, bm.bmHeight, pParentWnd->GetSafeHwnd(), NULL);
}

void CSplashWnd::HideSplashScreen()
{
	// Destroy the window, and update the mainframe.
	DestroyWindow();
	AfxGetMainWnd()->UpdateWindow();
}

void CSplashWnd::PostNcDestroy()
{
	// Free the C++ class.
	delete this;
}

int CSplashWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CWnd::OnCreate(lpCreateStruct) == -1)
		return -1;

	// Center the window.
	CenterWindow();

	// Set a timer to destroy the splash screen.
	SetTimer(1, 10000, NULL);

	return 0;
}

void CSplashWnd::OnPaint()
{
	CPaintDC dc(this);

	CDC dcImage;
	if (!dcImage.CreateCompatibleDC(&dc))
		return;

	BITMAP bm;
	m_bitmap.GetBitmap(&bm);

	// Paint the image.
	CBitmap* pOldBitmap = dcImage.SelectObject(&m_bitmap);
	dc.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcImage, 0, 0, SRCCOPY);
	dcImage.SelectObject(pOldBitmap);
}

void CSplashWnd::OnTimer(UINT nIDEvent)
{
	// Destroy the splash screen window.
	HideSplashScreen();
}