自制菜单vczx_CMenuEx

// MenuEx.cpp: implementation of the CMenuEx class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "MenuEx.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// CMenuEx::CMenuEx():m_szImage(16,15) { m_colMenu =::GetSysColor(COLOR_MENU); m_colText =::GetSysColor(COLOR_MENUTEXT); m_colTextSelected =::GetSysColor(COLOR_HIGHLIGHTTEXT); m_bInitial =FALSE; m_bHasImageLeft =FALSE; m_nSeparator = 10; //sparator的默认高度 } CMenuEx::~CMenuEx() { m_ImageList.DeleteImageList(); while(!m_ListMenu.IsEmpty()) delete m_ListMenu.RemoveHead(); if(m_bHasImageLeft) m_bmpImageLeft.DeleteObject(); } ///////////////////////////////////////////////// //当菜单项为不可用时绘制灰色的文本 void CMenuEx::GrayString(CDC *pDC, const CString &str, const CRect rect) { CRect rt(rect); //int nMode =pDC->SetBkMode(TRANSPARENT); rt.left +=1; rt.top +=1; pDC->SetTextColor(RGB(255,255,255)); pDC->DrawText(str,&rt,DT_EXPANDTABS|DT_VCENTER|DT_SINGLELINE); rt.left -=1; rt.top -=1; pDC->SetTextColor(RGB(127,127,127)); pDC->DrawText(str,&rt,DT_EXPANDTABS|DT_VCENTER|DT_SINGLELINE); //pDC->SetBkMode(nMode); } ///////////////////////////////////////////////// //绘制菜单项位图 void CMenuEx::DrawMenuItemImage(CDC *pDC, CRect &rect, BOOL bSelected, BOOL bChecked, BOOL bGrayed, BOOL bHasImage,LPMENUITEM lpItem) { CRect rt(rect.left ,rect.top ,rect.left + m_szImage.cx + 4, rect.top + m_szImage.cy + 4); if(bChecked) { if(bGrayed) { //菜单不可用 GrayString(pDC,"√",rt); } else { if(bSelected) { //菜单选中 //当该项被选中仅多绘制一个立体矩形 pDC->Draw3dRect(&rt,RGB(255,255,255),RGB(127,127,127)); } rt.InflateRect(-2,-2); //画出"√" pDC->SetBkMode(TRANSPARENT); pDC->SetTextColor(m_colText); pDC->DrawText("√",&rt,DT_EXPANDTABS|DT_VCENTER|DT_SINGLELINE); } rect.left +=m_szImage.cx + 4 +2 ; return ; } if(bHasImage) { CPoint pt(rt.left+2 , rt.top+2 ); UINT uStyle =ILD_TRANSPARENT; //CImageList::Draw()绘制位图的风格 if(bGrayed) { uStyle |=ILD_BLEND50; //菜单不可用所以位图较暗 } else { if(bSelected) { //当该项被选中仅多绘制一个立体矩形 pDC->Draw3dRect(&rt,RGB(255,255,255),RGB(127,127,127)); } } m_ImageList.Draw(pDC,lpItem->uIndex,pt,uStyle); //在菜单项中绘制位图 //调整可绘制矩形的大小 //4：位图外接矩形比位图大4 //2：菜单文本与位图外接矩形的间隔为2 rect.left +=m_szImage.cx + 4 + 2; } } ///////////////////////////////////////////////// //绘制菜单项文本 //参数：rect:立体矩形的RECT // rtText:菜单文本的RECT void CMenuEx::TextMenu(CDC *pDC, CRect &rect,CRect rtText,BOOL bSelected, BOOL bGrayed, LPMENUITEM lpItem) { //选中状态的菜单项要先画出立体矩形 if(bSelected) pDC->Draw3dRect(&rect,RGB(127,127,127),RGB(255,255,255)); if(bGrayed) { GrayString(pDC,lpItem->strText,rtText); } else { pDC->DrawText(lpItem->strText,rtText,DT_LEFT|DT_EXPANDTABS|DT_VCENTER); } } void CMenuEx::DrawImageLeft(CDC *pDC, CRect &rect,LPMENUITEM lpItem) { if(!m_bHasImageLeft || lpItem->uPositionImageLeft ==-1) return ; CDC memDC; memDC.CreateCompatibleDC(pDC); CBitmap *oldBmp =(CBitmap *) memDC.SelectObject(&m_bmpImageLeft); int cy; //设定该菜单项应从哪画起 if(m_szImageLeft.cy >= lpItem->uPositionImageLeft + rect.Height()) { cy =(int) m_szImageLeft.cy - lpItem->uPositionImageLeft - rect.Height(); ASSERT(cy>=0); } else cy =0; pDC->BitBlt(rect.left ,rect.top ,m_szImageLeft.cx ,rect.Height(),&memDC,0,cy,SRCCOPY); memDC.SelectObject(oldBmp); memDC.DeleteDC(); rect.left +=m_szImageLeft.cx+1; } void CMenuEx::DrawItem(LPDRAWITEMSTRUCT lpDIS) { CDC dc; LPMENUITEM lpItem; CRect rect(lpDIS->rcItem); dc.Attach(lpDIS->hDC); lpItem =(LPMENUITEM)lpDIS->itemData; if(lpDIS->itemState & ODS_SELECTED) dc.SetTextColor(m_colTextSelected); else dc.SetTextColor(m_colText); //设定背景色 CBrush brush(m_colMenu); dc.FillRect(&rect, &brush); //设定显示模式 dc.SetBkMode(TRANSPARENT); //绘制侧边位图 DrawImageLeft(&dc,rect,lpItem); if(lpItem->uID==0)//分隔条 { rect.top =rect.Height()/2+rect.top ; rect.bottom =rect.top +2; rect.left +=2; rect.right -=2; dc.Draw3dRect(rect,RGB(64,0,128),RGB(255,255,255)); } else { BOOL bSelected =lpDIS->itemState & ODS_SELECTED; BOOL bChecked =lpDIS->itemState & ODS_CHECKED; BOOL bGrayed =lpDIS->itemState & ODS_GRAYED; BOOL bHasImage =(lpItem->uIndex!=-1); //设定菜单文本的区域 CRect rtText(rect.left+m_szImage.cx+4+2, rect.top,rect.right ,rect.bottom ); rtText.InflateRect(-2,-2); //绘制菜单位图 DrawMenuItemImage(&dc,rect,bSelected,bChecked,bGrayed,bHasImage,lpItem); //绘制菜单文本 TextMenu(&dc,rect,rtText,bSelected,bGrayed,lpItem); #ifdef MENUCHAR //加入当前菜单链表 m_currentListMenu.AddTail(lpItem); #endif } dc.Detach(); } ////////////////////////////////////////////////////////// //改变菜单风格 //注意第二个参数：FALSE：表示pMenu指向的不是第一级菜单 void CMenuEx::ChangeStyle(CMenu *pMenu,CToolBar *pToolBar,BOOL bIsMainMenu) { ASSERT(pMenu); TRACE("ChangeStyle\n");//AfxMessageBox(""); LPMENUITEM lpItem; CMenu *pSubMenu; int m,nPosition=0; //该变量用来绘制侧边位图的位置 int inx; UINT idx,x; for(int i=(int)pMenu->GetMenuItemCount()-1 ;i>=0; i--) { lpItem =new MENUITEM; lpItem->uID =pMenu->GetMenuItemID(i); if(!bIsMainMenu) //不是第一级菜单 lpItem->uPositionImageLeft =-1;//二级以下菜单不支持侧边位图 else lpItem->uPositionImageLeft =nPosition; if(lpItem->uID >0) { if(bIsMainMenu) nPosition +=m_szImage.cy+4; //保存菜单文本 pMenu->GetMenuString(i,lpItem->strText,MF_BYPOSITION); #ifdef MENUCHAR //保存菜单文本中&后的字符 //如果没有则lpItem->uChr为0 int ret=lpItem->strText.Find('&'); lpItem->uChr =0; if(ret>=0) lpItem->uChr =lpItem->strText[ret+1]; //字符统一成大小 lpItem->uChr &=~0x20; #endif //由工具栏位图中寻找菜单项的位图 //如果没有则uIndex为-1 lpItem->uIndex =-1; if(pToolBar) { for(m=0; m<(pToolBar->GetToolBarCtrl().GetButtonCount()) ;m++) { pToolBar->GetButtonInfo(m,idx,x,inx); if(idx==lpItem->uID) { lpItem->uIndex=inx; break; } } } //如果该项下还有子菜单，则递归调用该函数来修改其子菜单的风格 pSubMenu =pMenu->GetSubMenu(i); if(pSubMenu) ChangeStyle(pSubMenu,pToolBar); } else { if(bIsMainMenu) nPosition +=m_nSeparator; } //修改菜单风格为自绘 pMenu->ModifyMenu(i,MF_BYPOSITION|MF_OWNERDRAW,lpItem->uID,(LPCTSTR)lpItem); m_ListMenu.AddTail(lpItem); } } ////////////////////////////////////////////////////////// //由工具栏的位图来产生菜单所用的位图列表m_ImageList int CMenuEx::GetImageFromToolBar(UINT uToolBar, CToolBar *pToolBar,COLORREF crMask/*工具栏位图的掩码*/) { if(!pToolBar) return 0; CBitmap bmp; int nWidth,nHeight; BITMAP bmpInfo; bmp.LoadBitmap(uToolBar); bmp.GetBitmap(&bmpInfo); //得到位图的高度 nHeight =bmpInfo.bmHeight; int nCount=0; int ret =pToolBar->GetToolBarCtrl().GetButtonCount(); //得到工具栏中位图的个数nCount for(int i=0;i<ret;i++) if(pToolBar->GetItemID(i)!=ID_SEPARATOR) nCount ++; //计算出位图的宽度 nWidth =bmpInfo.bmWidth/nCount; bmp.DeleteObject(); TRACE("Menu Bitmap--width:%d\theight:%d\n",nWidth,nHeight); //创建位图列表 m_ImageList.Create(uToolBar,nWidth,nHeight,crMask); m_szImage.cx =nWidth; m_szImage.cy