3D Text

Ever want large size text in your about box or splash screen? How about text with a raised 3D appearance? Well, this class will do it for you.

Simply add a button to your dialog. Set the button label to the text required - it will enlarge itself to fill the button, so make the button bigger for bigger 3D text.

In your dialog class, associate a control variable (say m_text3d), with the button. If you have told class wizard about CMyTextButton, you will be able to select it when you define the control variable. if not, just go for CButton and then manually edit the definition in your dialog header file, changing CButton ro CMyTextButton. If you do not like using DDX then you can just subclass the control.

In you OnInitDialog you would call the Use3D() function to set 3D effect on or off (it is on by default here). Also, you can change the text with SetWindowText().

The class uses PreSubclassWindow to ensure that the correct style bits are set, so you don't need to remember to set them in your dialog (I always do my own controls this way).

///////////////////////////////////////////////////////////////////////////
//
// MyTextButton.h interface for CMyTextButton
// (c) Roger Onslow, 1997
// use freely and enjoy
///////////////////////////////////////////////////////////////////////////
//

#ifndef _CMyTextButton_
#define _CMyTextButton_

///////////////////////////////////////////////////////////////////////////
//
// CMyTextButton control

class CMyTextButton : public CButton {
     bool m_bUse3D;
public:
     CMyTextButton() : m_bUse3D(true) {}
     void Use3D(bool bUse3D=true) { m_bUse3D = bUse3D; }
protected:
     void Draw(CDC* pDC, const CRect& rect, UINT state);
     //{{AFX_MSG(CMyTextButton)
     afx_msg void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
     afx_msg BOOL OnEraseBkgnd(CDC* pDC);
     //}}AFX_MSG
     //{{AFX_VIRTUAL(CMyTextButton)
     virtual void PreSubclassWindow();
     //}}AFX_VIRTUAL
     DECLARE_MESSAGE_MAP()
};

///////////////////////////////////////////////////////////////////////////
//

#endif



///////////////////////////////////////////////////////////////////////////
//
// MyTextButton.cpp - large text which acts as a button
// (c) Roger Onslow, 1997
// use freely and enjoy
///////////////////////////////////////////////////////////////////////////
//
#include "stdafx.h"
#include "MyTextButton.h"

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

///////////////////////////////////////////////////////////////////////////
//
// CMyTextButton

BEGIN_MESSAGE_MAP(CMyTextButton, CButton)
     //{{AFX_MSG_MAP(CMyTextButton)
     ON_WM_DRAWITEM()
     ON_WM_ERASEBKGND()
     //}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CMyTextButton::PreSubclassWindow() {
     SetButtonStyle(GetButtonStyle() | BS_OWNERDRAW);
}

///////////////////////////////////////////////////////////////////////////
//
// CMyTextButton message handlers

void CMyTextButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) {
     CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
     ASSERT_VALID(pDC);
     CRect rectClient = lpDrawItemStruct->rcItem;
     Draw(pDC,rectClient, lpDrawItemStruct->itemState);
}

void CMyTextButton::Draw(CDC* pDC, const CRect& rect, UINT state) {
     CString text; GetWindowText(text);
     int l = text.GetLength();
     CRect rectClient = rect;

     // get font from control
     CFont* pFont = GetFont();

     // ensure we have a valid height and width and select the font
     LOGFONT logfont;
     pFont->GetObject(sizeof(LOGFONT),&logfont);
     if (logfont.lfHeight == 0) logfont.lfHeight = 20;
     logfont.lfWidth = 0;     // 0 so it will be calculated
     logfont.lfWeight = 1000;
     logfont.lfEscapement = logfont.lfOrientation = 0;
     CFont tryfont; VERIFY(tryfont.CreateFontIndirect(&logfont));
     CFont* pFontOld = pDC->SelectObject(&tryfont);

     // get the control size and adjust font width & height accordingly
     if (m_bUse3D) rectClient.DeflateRect(3,3);
     CSize textSizeClient = pDC->GetTextExtent(text,l);
     if (rectClient.Width()*textSizeClient.cy >
rectClient.Height()*textSizeClient.cx) {
          logfont.lfHeight = ::MulDiv(logfont.
lfHeight,rectClient.Height(),textSizeClient.cy);
     } else {
          logfont.lfHeight = ::MulDiv(logfont.
lfHeight,rectClient.Width(),textSizeClient.cx);
     }
     logfont.lfHeight--; // fudge factor
     if (m_bUse3D) rectClient.InflateRect(3,3);

     // create adjusted font and select
     CFont font; font.CreateFontIndirect(&logfont);
     pDC->SelectObject(&font);
     textSizeClient = pDC->GetTextExtent(text,l);

     int minx = rectClient.left+(rectClient.Width()-textSizeClient.cx)/2;
     int miny = rectClient.top+(rectClient.Height()-textSizeClient.cy)/2;

     int oldBkMode = pDC->SetBkMode(TRANSPARENT);
     COLORREF textcol = ::GetSysColor((state & ODS_FOCUS) ? COLOR_GRAYTEXT
: COLOR_BTNTEXT);
     COLORREF oldTextColor = pDC->SetTextColor(textcol);

     int cx = minx;
     int cy = miny;
     if (m_bUse3D) {
          int s = (state & ODS_SELECTED) ? -1 : +1;
          cx += 3; cy += 3;

          // draw 3D highlights
          pDC->SetTextColor(::GetSysColor(COLOR_3DDKSHADOW));
          pDC->TextOut(cx-s*2,cy+s*2,text);
          pDC->TextOut(cx+s*2,cy-s*2,text);
          pDC->TextOut(cx+s*2,cy+s*2,text);
          pDC->SetTextColor(::GetSysColor(COLOR_3DHILIGHT));
          pDC->TextOut(cx+s*1,cy-s*2,text);
          pDC->TextOut(cx-s*2,cy+s*1,text);
          pDC->TextOut(cx-s*2,cy-s*2,text);
          pDC->SetTextColor(::GetSysColor(COLOR_3DSHADOW));
          pDC->TextOut(cx-s*1,cy+s*1,text);
          pDC->TextOut(cx+s*1,cy-s*1,text);
          pDC->TextOut(cx+s*1,cy+s*1,text);
          pDC->SetTextColor(::GetSysColor(COLOR_3DLIGHT));
          pDC->TextOut(cx,cy-s*1,text);
          pDC->TextOut(cx-s*1,cy,text);
          pDC->TextOut(cx-s*1,cy-s*1,text);
          pDC->SetTextColor(textcol);
     }
     // draw the text
     pDC->TextOut(cx,cy,text);

     // restore DC
     pDC->SetTextColor(oldTextColor);
     pDC->SetBkMode(oldBkMode);
     pDC->SelectObject(pFontOld);
}

BOOL CMyTextButton::OnEraseBkgnd(CDC*) {
     return true;    // we don't do any erasing...
}