hintwindow.cpp

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// HintWindow.cpp : 实现文件
//

#include "stdafx.h"
#include "SoccerDoctor.h"
#include "HintWindow.h"


// CHintWindow

IMPLEMENT_DYNAMIC(CHintWindow, CWnd)
CHintWindow::CHintWindow()
{
	_nDelay = 500; // 缺省延迟500ms
	_nLast = 2000; // 缺省持续5s
	_bDisplayed = false;
}

CHintWindow::~CHintWindow()
{
}


BEGIN_MESSAGE_MAP(CHintWindow, CWnd)
	ON_WM_PAINT()
	ON_WM_TIMER()
END_MESSAGE_MAP()



// CHintWindow 消息处理程序
void CHintWindow::CreateHintWindow(CWnd* pParentWnd)
{
	CreateEx(NULL, NULL, "Hint", WS_CHILD ,0, 0, 10, 10, pParentWnd->GetSafeHwnd(), NULL);
    _tipPen.CreatePen(PS_SOLID, 1, RGB(0,0,0));
    _tipFont.CreateFont(15, 0, 0, 0, FW_REGULAR, 0, 0, 0, 0, 0, 0, 0, 0, "MS Sans Serif");
    _tipBrush.CreateSolidBrush(RGB(255, 255, 225));
	ShowWindow(SW_HIDE);
}
void CHintWindow::ShowHint(const CPoint& winPos,const CString& strHint)
{
	if(!GetSafeHwnd()){
        return ;
	}
    
	if(_winPos != winPos || _strHint != strHint)
    {
        StopDelayTimer();
		StopLastTimer();
		ShowWindow(SW_HIDE);
		_bDisplayed = false;
		_winPos = winPos;
		_strHint = strHint;
		// ReSize the tip window according to tip text
		CRect clientRect;
		GetClientRect(&clientRect);
		CPaintDC dc(this);
		CFont* pOldFont = dc.SelectObject(&_tipFont);
		CSize stringSize = dc.GetTextExtent(_strHint);
		clientRect.bottom = _winPos.y ;
		clientRect.left = _winPos.x ; 
		clientRect.top = clientRect.bottom - stringSize.cy ;
		clientRect.right = clientRect.left + stringSize.cx ;
    
		// Give some extra widht and height to window
		clientRect.InflateRect(2,2,2,2);
		MoveWindow(&clientRect);
		dc.SelectObject(pOldFont);
		
		StartDelayTimer();
	}
}
void CHintWindow::StartDelayTimer()
{
	SetTimer(ID_HINT_DELAYTIMER, _nDelay, 0);
}
void CHintWindow::StopDelayTimer()
{
	KillTimer(ID_HINT_DELAYTIMER);
}
void CHintWindow::StartLastTimer()
{
	SetTimer(ID_HINT_LASTTIMER, _nLast, 0);
}
void CHintWindow::StopLastTimer()
{
	KillTimer(ID_HINT_LASTTIMER);
}

void CHintWindow::OnPaint()
{
	CPaintDC dc(this); 
	
    // Select them
    CPen*  pOldPen = dc.SelectObject(&_tipPen);
    CFont* pOldFont = dc.SelectObject(&_tipFont);
    CBrush* pOldBsh = dc.SelectObject(&_tipBrush);

    // Draw a rectangle to give background color
    CRect clientRect;
    GetClientRect(&clientRect);
    dc.Rectangle(&clientRect);
    // Set Transparent mode so that it will not show fonts back color
    dc.SetBkMode(TRANSPARENT);

    // Now display the tip
    dc.TextOut(2, 2, _strHint); 

    // Select Old Pen, Font and Brush
    dc.SelectObject(pOldBsh);
    dc.SelectObject(pOldPen);
    dc.SelectObject(pOldFont);
}

void CHintWindow::OnTimer(UINT nIDEvent)
{
	if(nIDEvent == ID_HINT_DELAYTIMER)
    {
        Invalidate();     
        StopDelayTimer();        // Stop the timer because now there is no need to continue with it
		StartLastTimer();
		ShowWindow(SW_SHOW);
	}else if(nIDEvent == ID_HINT_LASTTIMER){
		ShowWindow(SW_HIDE);
		StopLastTimer();
	}
	CWnd::OnTimer(nIDEvent);
}