qmenu.cpp

界面编程的一些实现方法打包,VC中实现,比较新颖,大家

//////
// EZMenu - Owner drawn menu with Icons & progressbars
// Copyright V.Lakshmi Narasimhan,[e-mail].
// Feel free to use,modify,twist,turn or even 
// digest the code for any non commercial purposes.
// I would appreciate constructive suggestions & bug reports.
// Please dont delete the above lines.
///////

//Implementation file for owner drawn menu EZMenu
#include "stdafx.h" 
#include "QMenu.h"
#include "resource.h"

QMenu::QMenu()
{
	m_szBitmapSize=CSize(20,60);
	m_SeperatorNum=m_nCount=m_nItems=0;
	m_nAveHeight=16;
	m_clrExtend=RGB(0,0,255);
	m_ItemHeight=20;
	m_MenuWidth=50;
	CMenu::CMenu();

}



void QMenu::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
	m_nCount++;
	LPQMENUITEMDATA lpez=(LPQMENUITEMDATA)lpDrawItemStruct->itemData;

	CDC* pdc=CDC::FromHandle(lpDrawItemStruct->hDC);

    if(lpez->bSeperator)
	{
		m_SeperatorNum++;
		int nWidth=0;
		if(m_bitmap.m_hObject)
			nWidth+=(m_szBitmapSize.cx+lpDrawItemStruct->rcItem.left);
	    CRect rcSep(lpDrawItemStruct->rcItem);
		rcSep.left+=nWidth;
		pdc->DrawEdge(&rcSep,EDGE_ETCHED,BF_TOP);
		
		return;
	}
	
	// Rects Definition
	CRect rect(lpDrawItemStruct->rcItem);//general
	m_MenuWidth=(m_MenuWidth>rect.right)?m_MenuWidth:rect.right;
	CRect rcBmp(rect);
	CRect rcIcon(rect);//Icon rect
	CRect rcText(rect);//Text rect;

	
	//Rects Initialization
	   
	rcBmp.right=rcBmp.left+m_szBitmapSize.cx;
	rcIcon.top+=3;
	rcIcon.left=rcBmp.right+5;
	rcIcon.right=rcIcon.left+16;
	rcText.left=rcIcon.right+8;
	
	//Drawing code
	
	
	
	HICON hItemIcon=lpez->hItemIcon;
	CSize szIcon=CSize(16,16);
	
	//Draws the whole thing
	
	if (lpDrawItemStruct->itemAction & ODA_DRAWENTIRE)
	{
		
		
		//Draw the Icon
	 int nOldMap=pdc->SetMapMode(MM_TEXT);
	 if(hItemIcon)
		    pdc->DrawState(rcIcon.TopLeft(),szIcon,hItemIcon,DST_ICON|DSS_NORMAL,(CBrush*)NULL);

	 else if(lpez->bChecked)
		{
		   
		   HICON hCheck=(HICON)::LoadImage(AfxGetInstanceHandle(),
			                               MAKEINTRESOURCE(IDI_CHECK_SMALL),IMAGE_ICON,szIcon.cx,szIcon.cy,LR_DEFAULTCOLOR);
		   pdc->DrawState(rcIcon.TopLeft(),szIcon,hCheck,DST_ICON|DSS_NORMAL,(CBrush*)NULL);
		   
		}
		
		//Finally draw the text
		
		pdc->SetMapMode(nOldMap);
		CBrush *pBrush=new CBrush(::GetSysColor(COLOR_BTNFACE));
		pdc->FillRect(rcText,pBrush);
		delete pBrush;
		pdc->SetTextColor(::GetSysColor(COLOR_BTNTEXT));
		pdc->SetBkColor(::GetSysColor(COLOR_BTNFACE));
	//	rcText.left++;
		pdc->DrawText(lpez->strItemText,&rcText,DT_LEFT|DT_NOCLIP|DT_SINGLELINE|DT_VCENTER);
      //  rcText.left--;
		//Draw the bitmap at the end
		if(m_nCount==m_nItems)
		{
			m_nCount=0;
			if(m_bitmap.m_hObject)
			{
				CDC memdc;
				memdc.CreateCompatibleDC(pdc);
				memdc.SelectObject(m_bitmap);
				if(m_nAveHeight>m_szBitmapSize.cy)
				{
					int nTop=rect.bottom-m_szBitmapSize.cy;
					pdc->BitBlt(rect.left,nTop,m_szBitmapSize.cx,m_szBitmapSize.cy,&memdc,0,0,SRCCOPY);	   
					pdc->FillSolidRect(rect.left,rect.bottom-m_nAveHeight,m_szBitmapSize.cx,m_nAveHeight-m_szBitmapSize.cy,m_clrExtend);
				}
				else
					pdc->BitBlt(rect.left,rect.bottom-m_nAveHeight,m_szBitmapSize.cx,m_nAveHeight,&memdc,0,0,SRCCOPY);	   
				
				
			}
		}
	}
	
	
	//Draws the selected item
	
	if ((lpDrawItemStruct->itemState & ODS_SELECTED) &&
		(lpDrawItemStruct->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)))
	{
		
		
		if(hItemIcon)
		{
			CRect rcIconHilite(rcIcon);
			rcIconHilite.left-=2;
			rcIconHilite.top-=2;
			rcIconHilite.bottom-=2;
			rcIconHilite.right+=2;
			pdc->Draw3dRect(&rcIconHilite,::GetSysColor(COLOR_3DHILIGHT),::GetSysColor(COLOR_3DDKSHADOW));
			
		}
		
        //Text

		CRect textrect(rcText);
    	COLORREF crOld=pdc->SetTextColor(::GetSysColor(COLOR_HIGHLIGHT));
		COLORREF crBgOld=pdc->SetBkColor(::GetSysColor(COLOR_BTNFACE));
		
	//	CFont* pFont=pdc->GetCurrentFont();
	//	LOGFONT* pLf=new LOGFONT;
	//	pFont->GetLogFont(pLf);
	//	pLf->lfWeight=FW_SEMIBOLD;	
	//	CFont* pNewFont=new CFont;
	//	pNewFont->CreateFontIndirect(pLf);
	//	pFont=pdc->SelectObject(pNewFont);
		//textrect.left+=2;
		pdc->DrawText(lpez->strItemText,&textrect,DT_LEFT|DT_NOCLIP|DT_SINGLELINE|DT_VCENTER);
		//textrect.left-=2;
		pdc->SetTextColor(crOld);
		pdc->SetBkColor(crBgOld);
		
	//	delete pdc->SelectObject(pFont);
	//	delete pLf;
		
		textrect.top+=1;
		textrect.bottom-=2;
        textrect.left-=1;  
		pdc->Draw3dRect(&textrect,::GetSysColor(COLOR_3DDKSHADOW),::GetSysColor(COLOR_3DHILIGHT));
        
	}
	
	
	//Draws the deselected item
	
	
	
	if (!(lpDrawItemStruct->itemState & ODS_SELECTED) &&
		(lpDrawItemStruct->itemAction & ODA_SELECT))
	{
		
		
		if(hItemIcon)
		{
			CRect rcIconHilite(rcIcon);
			rcIconHilite.left-=2;
			rcIconHilite.top-=2;
			rcIconHilite.bottom-=2;
			rcIconHilite.right+=2;
			pdc->Draw3dRect(&rcIconHilite,::GetSysColor(COLOR_BTNFACE),::GetSysColor(COLOR_BTNFACE));
			
		}

		pdc->SetTextColor(::GetSysColor(COLOR_BTNTEXT));
		pdc->SetBkColor(::GetSysColor(COLOR_BTNFACE));
		CRect textrect(rcText);
	    CBrush *pBrush=new CBrush(::GetSysColor(COLOR_BTNFACE));
		pdc->FillRect(&textrect,pBrush);
		delete pBrush;

		pdc->DrawText(lpez->strItemText,&textrect,DT_LEFT|DT_NOCLIP|DT_SINGLELINE|DT_VCENTER);
		textrect.top+=1;
		textrect.bottom-=2;
        textrect.left-=1;  
		pdc->Draw3dRect(&textrect,::GetSysColor(COLOR_BTNFACE),::GetSysColor(COLOR_BTNFACE));
		
	}   
	
}



void QMenu::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{


	LPQMENUITEMDATA  lpez=(LPQMENUITEMDATA  )lpMeasureItemStruct->itemData;
	if(lpez->bSeperator) 
	{
		lpMeasureItemStruct->itemHeight=5;
		return;
	}
	CDC* pdc=new CDC;
	pdc->Attach(::GetDC(AfxGetMainWnd()->m_hWnd));
    CSize szText=pdc->GetTextExtent(lpez->strItemText);  
	::ReleaseDC(AfxGetMainWnd()->m_hWnd,pdc->m_hDC);
	delete pdc;
	lpMeasureItemStruct->itemWidth=szText.cx+18+m_szBitmapSize.cx+8;
	lpMeasureItemStruct->itemHeight=__max(m_ItemHeight,szText.cy)+4;
    m_nAveHeight=m_nItems*lpMeasureItemStruct->itemHeight;
      
}

QMenu::~QMenu()
{

	DestroyMenu();
	CMenu::~CMenu();
}


void QMenu::SetMenuBitmap(HBITMAP hBitmap)
{
	m_bitmap.Attach(hBitmap);
}

void QMenu::AppendOwnerDrawnItem(UINT nID, LPQMENUITEMDATA lpez)
{

	VERIFY(AppendMenu(MF_ENABLED | MF_OWNERDRAW, nID,(LPCTSTR)lpez));

}

void QMenu::SetBitmapDimension(CSize sz)
{

	m_szBitmapSize=sz;
}

void QMenu::InsertOwnerDrawnMenuItem(UINT nID, LPQMENUITEMDATA lpez,int nPos)
{

		VERIFY(InsertMenu(nPos,MF_BYPOSITION|MF_ENABLED | MF_OWNERDRAW, nID,(LPCTSTR)lpez));
}

void QMenu::SetExtensionColor(COLORREF clrExtend)
{
	m_clrExtend=clrExtend; 

}

void QMenu::SetTotalItems(int nItems)
{
	m_nItems=nItems;

}

QMenuItemData::QMenuItemData()
{
	bChecked=FALSE;
	bSeperator=FALSE;
	hItemIcon=NULL;
	strItemText.Empty();
}
QMenuItemData::~QMenuItemData()
{
//	delete this;
}
void QMenu::ModifyOwnerDrawnMenuItem(int nPos, UINT nID, int nTotalCheck,LPQMENUITEMDATA lpez)
{
    //Iam not sure how to implement this.Suggestions are welcome.    
	//if(GetMenuItemCount()>(UINT)nTotalCheck)?
			VERIFY(ModifyMenu(nPos,MF_BYPOSITION|MF_OWNERDRAW,nID,(LPCTSTR)lpez));
	//else
	//	InsertOwnerDrawnMenuItem(nID,lpez,nPos);
	
}

void QMenuItemData::SetItemIcon(int idIcon)
{
	HICON hIcon=(HICON)::LoadImage(AfxGetInstanceHandle(),MAKEINTRESOURCE(idIcon),
			  					   IMAGE_ICON,16,16,LR_DEFAULTCOLOR);
	hItemIcon=hIcon;
}

void QMenuItemData::SetItemIcon(HICON hIcon)
{
    hItemIcon=hIcon;
}

void QMenuItemData::SetCheck(int iState)
{
    bChecked=iState;
}

void QMenuItemData::SetSeperator(int enable)
{
    bSeperator=enable;
}

void QMenuItemData::SetItemText(CString szText)
{
    strItemText=szText;
}

CSize QMenu::GetMenuSize()
{
	CSize size;
	size.cx=m_MenuWidth+74;
	size.cy=(m_ItemHeight+4)*m_nItems-m_SeperatorNum*4-8;
	return size;
}

void QMenu::SetItemHeight(int value)
{

}