// StaticCaption.cpp : implementation file
//

#include "stdafx.h"
#include "Walkthrough.h"
#include "StaticCaption.h"

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

/////////////////////////////////////////////////////////////////////////////
// CStaticCaption

CStaticCaption::CStaticCaption()
{
   // Create Colors for this control.  These are used
   // in the OnPaint Handler.
   m_crBack1 = RGB(0,128,128);    // Greenish
   m_crBack2 = RGB(128,0,128);    // Purple
   m_crText  = RGB(255,255,255);  // White

   // Create a Font using the default GUI Font.
   m_pRightFont = CFont::FromHandle(
                     (HFONT)GetStockObject(DEFAULT_GUI_FONT));
   
   // Create a BOLD font based on the default font.
   LOGFONT lf;
   m_pRightFont->GetLogFont(&lf);
   lf.lfWeight = 700;   // 700 = BOLD
   m_cLeftFont.CreateFontIndirect(&lf);
}

CStaticCaption::~CStaticCaption()
{}


BEGIN_MESSAGE_MAP(CStaticCaption, CStatic)
	//{{AFX_MSG_MAP(CStaticCaption)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStaticCaption message handlers

void CStaticCaption::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
    // Retrieve Window Caption for Later Use
	CString lcWndText;
	GetWindowText(lcWndText);
	
	// Get A Rect for this Control, Client Rect gives an
	// x and y value of zero.
	CRect rc;
	GetClientRect(&rc);

   // Draw the Background.
   DrawGradiant(dc, rc);
   
   // Draw the Caption text if the Window has any Text set.
   if (lcWndText != "")
	{
		DrawCapText(dc, rc, lcWndText);
	}
}

//----------{ Draw a Gradiant Background }----------------------//

void CStaticCaption::DrawGradiant(CDC & pDC, CRect & pRect)
{
   // Get RGB values of Left Side
   double a1 = GetRValue(m_crBack1);
	double a2 = GetGValue(m_crBack1);
	double a3 = GetBValue(m_crBack1);

   // Get RGB values of Right Side
	double b1 = GetRValue(m_crBack2);
	double b2 = GetGValue(m_crBack2);
	double b3 = GetBValue(m_crBack2);

   // Compute Step size for color gradiant
   double s1 = (b1 - a1)/pRect.Width();
	double s2 = (b2 - a2)/pRect.Width();
	double s3 = (b3 - a3)/pRect.Width();

	for(int i = pRect.left; i < pRect.right; i++)
	{
		pDC.FillSolidRect(CRect(i,pRect.top,i+1,pRect.bottom),
                          RGB((int)a1,(int)a2,(int)a3));
      // Step to next color value
      a1 += s1; a2 += s2; a3 += s3;
	}
}

//----------{ Draw Label Text }---------------------------------//

void CStaticCaption::DrawCapText(CDC & pDC, CRect & pRect,
                                 CString & pText)
{
   // Prepare the DC for drawing the text. create
   // a transparent background, with the specified 
   // font color.
   int lOldBkMode     = pDC.SetBkMode(TRANSPARENT);
	CFont * lOldFont   = pDC.SelectObject(&m_cLeftFont);
	COLORREF lOldColor = pDC.SetTextColor(m_crText);

   // Check for Description Text, if there is any
   // then grab it and panit it, using the Default
   // font.
   int lnTabPos = pText.Find('\t');
	if (lnTabPos > 0)
	{
		pDC.SelectObject(m_pRightFont);
		CString lcDesc = pText.Right(pText.GetLength() - 1 - lnTabPos);
		UINT lOldAlign = pDC.SetTextAlign(TA_RIGHT);
		pDC.TextOut(pRect.right-2, pRect.top + 1, lcDesc);
		pDC.SetTextAlign(lOldAlign);
		pText = pText.Left(lnTabPos);
		pDC.SelectObject(&m_cLeftFont);
	}

   // Paint the Caption using the BOLD Font.
   pDC.TextOut(pRect.left+2, pRect.top + 1, pText);

   // Clean up the DC.
	pDC.SetTextColor(lOldColor);
	pDC.SelectObject(lOldFont);
	pDC.SetBkMode(lOldBkMode);
}