www.pudn.com > StyleToolkit_demo_src.zip > StyleEdit.cpp

// 
// StyleEdit.cpp : Version 1.0 - see article at CodeProject.com 
// 
// Author:  Darren Sessions 
//           
// 
// Description: 
//     StyleEdit is a CEdit derived control that uses the Style class 
//	   and GDI+ to support different styles 
// 
// History 
//     Version 1.0 - 2008 June 20 
//     - Initial public release 
// 
// License: 
//     This software is released under the Code Project Open License (CPOL), 
//     which may be found here:  http://www.codeproject.com/info/eula.aspx 
//     You are free to use this software in any way you like, except that you  
//     may not sell this source code. 
// 
//     This software is provided "as is" with no expressed or implied warranty. 
//     I accept no liability for any damage or loss of business that this  
//     software may cause. 
// 
/////////////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "StyleEdit.h" 
 
#include "colors.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// StyleEdit 
 
StyleEdit::StyleEdit() 
	:m_EditRect(0,0,0,0) 
{ 
	m_OffsetY = -1; 
	m_HollowBrush.CreateStockObject(HOLLOW_BRUSH); 
	m_TextColor = Black; 
} 
 
StyleEdit::~StyleEdit() 
{ 
} 
 
void StyleEdit::SetStack(Stack stack) 
{ 
	Rect r(stack.Frame.frect); 
	CRect cr(r.X, r.Y, r.X + r.Width, r.Y + r.Height); 
	m_EditRect = cr; 
	m_Style.AddStack(stack); 
} 
void StyleEdit::SetTextClr(COLORREF clr) 
{ 
	m_TextColor = clr; 
} 
 
BEGIN_MESSAGE_MAP(StyleEdit, CEdit) 
	ON_WM_CTLCOLOR_REFLECT() 
	ON_WM_ERASEBKGND() 
	ON_CONTROL_REFLECT(EN_UPDATE, OnUpdate) 
	ON_WM_NCCALCSIZE() 
	ON_WM_NCPAINT() 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// StyleEdit message handlers 
 
HBRUSH StyleEdit::CtlColor(CDC* pDC, UINT nCtlColor)  
{ 
	pDC->SetBkMode(TRANSPARENT); 
	pDC->SetTextColor(m_TextColor); 
    return (HBRUSH)m_HollowBrush; 
} 
 
BOOL StyleEdit::OnEraseBkgnd(CDC* pDC)  
{ 
	m_Style.SetPosition(0, m_OffsetY); 
	m_Style.PaintStyle(pDC, m_EditRect); 
	return TRUE; 
} 
 
void StyleEdit::OnUpdate()  
{ 
	Invalidate();  
} 
 
// center text vertically 
void StyleEdit::OnNcCalcSize(BOOL bCalcValidRects, NCCALCSIZE_PARAMS* lpncsp) 
{ 
	CRect rectWnd, rectClient; 
	 
	//calculate client area height needed for a font 
	CFont *pFont = GetFont(); 
	CRect rectText; 
	rectText.SetRectEmpty(); 
	 
	CDC *pDC = GetDC(); 
	 
	CFont *pOld = pDC->SelectObject(pFont); 
	pDC->DrawText("Eb", rectText, DT_CALCRECT | DT_LEFT); 
	UINT uiVClientHeight = rectText.Height(); 
	 
	pDC->SelectObject(pOld); 
	ReleaseDC(pDC); 
	 
	//calculate NC area to center text. 
	 
	GetClientRect(rectClient); 
	GetWindowRect(rectWnd); 
 
	ClientToScreen(rectClient); 
 
	UINT uiCenterOffset = (rectClient.Height() - uiVClientHeight) / 2; 
	UINT uiCY = (rectWnd.Height() - rectClient.Height()) / 2; 
	UINT uiCX = (rectWnd.Width() - rectClient.Width()) / 2; 
 
	m_OffsetY = -(int)uiCenterOffset; 
 
	lpncsp->rgrc[0].top +=uiCenterOffset; 
	lpncsp->rgrc[0].bottom -= uiCenterOffset; 
 
	lpncsp->rgrc[0].left +=uiCX; 
	lpncsp->rgrc[0].right -= uiCY; 
} 
 
BOOL StyleEdit::OnChildNotify(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pLResult) 
{ 
	if(m_OffsetY == -1) 
	{ 
		SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOOWNERZORDER | SWP_NOSIZE | SWP_NOMOVE | SWP_FRAMECHANGED); 
	} 
 
	return CEdit::OnChildNotify(message, wParam, lParam, pLResult); 
} 
 
void StyleEdit::OnNcPaint() 
{ 
	Default(); 
 
	CWindowDC dc(this); 
 
	m_Style.SetPosition(0, 0); 
	m_Style.PaintStyle(&dc, m_EditRect); 
}