Windows XP风格菜单

// CustMenu.cpp: implementation of the CMenuXP class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "MenuXP.h" #include "KeyHelper.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif // constants used for drawing const CXGAP = 0; // num pixels between button and text const CXTEXTMARGIN = 2; // num pixels after hilite to start text const CXBUTTONMARGIN = 2; // num pixels wider button is than bitmap const CYBUTTONMARGIN = 2; // ditto for height // DrawText flags const DT_MYSTANDARD = DT_SINGLELINE|DT_LEFT|DT_VCENTER; ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// IMPLEMENT_DYNAMIC(CMenuXP, CMenu) CMenuXP::CMenuXP() { //initialize menu font with the default NONCLIENTMETRICS info; info.cbSize = sizeof(info); SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(info), &info, 0); VERIFY(m_fontMenu.CreateFontIndirect(&info.lfMenuFont)); //initialize colors with system default m_clrBackGround = ::GetSysColor(COLOR_MENU); m_clrSelectedBar = ::GetSysColor(COLOR_HIGHLIGHT); m_clrSelectedText = ::GetSysColor(COLOR_HIGHLIGHTTEXT); m_clrText = ::GetSysColor(COLOR_MENUTEXT); m_clrDisabledText = ::GetSysColor(COLOR_GRAYTEXT); m_clrIconArea = m_clrBackGround; //initialize sidebar colors m_clrSideBarStart = RGB(0, 0, 192); m_clrSideBarEnd = RGB(0, 0, 0); m_clrSideBarStart = RGB(130, 170, 255); m_clrSideBarEnd = RGB(6, 8, 60); //the default sytle is office style m_Style = STYLE_OFFICE; m_bBreak = false; m_bBreakBar = false; m_hBitmap = NULL; } CMenuXP::~CMenuXP() { m_fontMenu.DeleteObject(); Clear(); } void CMenuXP::MeasureItem( LPMEASUREITEMSTRUCT lpms ) { if (lpms->CtlType != ODT_MENU) return; CMenuXPItem *pItem = (CMenuXPItem *)lpms->itemData; TRACE("pItem: 0x%x",(DWORD)pItem); //This line prevent boundschecker from issue a resource leak if (!pItem) return; if (pItem->m_bSideBar) { lpms->itemWidth = pItem->m_nSize; lpms->itemHeight = 0; } else if (pItem->m_bSeparator) { // separator: use half system height and zero width lpms->itemHeight = ::GetSystemMetrics(SM_CYMENUCHECK)>>1; lpms->itemWidth = 0; } else { //calculate the size needed to draw the text: use DrawText with DT_CALCRECT CWindowDC dc(NULL); // screen DC--I won't actually draw on it CRect rcText(0,0,0,0); CFont* pOldFont = dc.SelectObject(&m_fontMenu); dc.DrawText(pItem->m_strText, rcText, DT_MYSTANDARD|DT_CALCRECT); dc.SelectObject(pOldFont); // the height of the item should be the maximun of the text and the button lpms->itemHeight = max(rcText.Height(), pItem->m_nSize + (CYBUTTONMARGIN<<1)); if (pItem->m_bButtonOnly) { //for button only style, we set the item's width to be the same as its height lpms->itemWidth = lpms->itemHeight; } else { // width is width of text plus a bunch of stuff int cx = rcText.Width(); // text width cx += CXTEXTMARGIN<<1; // L/R margin for readability cx += CXGAP; // space between button and menu text cx += (pItem->m_nSize + CYBUTTONMARGIN * 2) <<1; // button width (L=button; R=empty margin) lpms->itemWidth = cx; // done deal } } // whatever value I return in lpms->itemWidth, Windows will add the // width of a menu checkmark, so I must subtract to defeat Windows. Argh. // lpms->itemWidth -= GetSystemMetrics(SM_CXMENUCHECK)-1; TRACE("MeasureItem: ID(%d), Width(%d), Height(%d)\n", lpms->itemID, lpms->itemWidth, lpms->itemHeight); } // 自绘制菜单项 void CMenuXP::DrawItem( LPDRAWITEMSTRUCT lpds ) { ASSERT(lpds); // 若不是菜单项，返回 if (lpds->CtlType != ODT_MENU) return; // 得到菜单项绘制所需数据 CMenuXPItem * pItem = (CMenuXPItem *)lpds->itemData; if (!pItem) return; ASSERT(lpds->itemAction != ODA_FOCUS); ASSERT(lpds->hDC); CDC dc; dc.Attach(lpds->hDC); //取得绘制区域 CRect rcItem = lpds->rcItem; TRACE("DrawItem: ID(%d), Widht(%d), Height(%d)\n", lpds->itemID, rcItem.Width(), rcItem.Height()); if (pItem->m_bSideBar) { CRect rcClipBox; dc.GetClipBox(rcClipBox); // 绘制菜单标题栏 CRect rc = rcItem; rc.top = rcClipBox.top; rc.bottom = rcClipBox.bottom; DrawSideBar(&dc, rc, pItem->m_hIcon, pItem->m_strText); } else if (pItem->m_bSeparator) { // 绘制菜单背景 DrawBackGround(&dc, rcItem, FALSE, FALSE); CRect rc = rcItem; // 复制区域 rc.top += rc.Height()>>1; // 垂直居中 dc.DrawEdge(&rc, EDGE_ETCHED, BF_TOP); // 绘制分割线 // 在菜单项的图标区中填充背景颜色 if (m_Style == STYLE_XP) { CRect rcArea(rcItem.TopLeft(), CSize(pItem->m_nSize + (CYBUTTONMARGIN<<1), pItem->m_nSize + (CYBUTTONMARGIN<<1))); DrawIconArea(&dc, rcArea, FALSE, FALSE, FALSE); } } else { BOOL bDisabled = lpds->itemState & ODS_GRAYED; BOOL bSelected = lpds->itemState & ODS_SELECTED; BOOL bChecked = lpds->itemState & ODS_CHECKED; // 绘制菜单背景 DrawBackGround(&dc, rcItem, bSelected, bDisabled); // 绘制菜单项中的图标 if (m_Style == STYLE_XP) { CRect rcArea(rcItem.TopLeft(), CSize(rcItem.Height(), rcItem.Height())); DrawIconArea(&dc, rcArea, bSelected, bDisabled, bChecked); } // 绘制菜单项中的按钮 CRect rcButton(rcItem.TopLeft(), CSize(rcItem.Height(), rcItem.Height())); if (pItem->m_bButtonOnly) rcButton = rcItem; if (pItem->m_hIcon || bChecked) { DrawButton(&dc, rcButton, bSelected, bDisabled, bChecked); } // 绘制菜单项中图标 if (pItem->m_hIcon) { CRect rcIcon = rcButton; rcIcon.DeflateRect(2, 2); DrawIcon(&dc, rcIcon, pItem->m_hIcon, bSelected, bDisabled, bChecked); } else if (bChecked) { // 绘制Check Mark CRect rcCheck = rcButton; rcCheck.DeflateRect(2, 2); DrawCheckMark(&dc, rcCheck, bSelected); } // 绘制菜单项文本 if (!pItem->m_bButtonOnly) { CRect rcText = rcItem; // 复制区域 rcText.left += rcButton.Width() + CXGAP + CXTEXTMARGIN; // 左空白区宽 rcText.right -= pItem->m_nSize; // 右空白区宽 DrawText(&dc, rcText, pItem->m_strText, bSelected, bDisabled, lpds->itemState&ODS_DEFAULT ? 1 : 0); } } dc.Detach(); } //draw background void CMenuXP::DrawBackGround(CDC *pDC, CRect rect, BOOL bSelected, BOOL bDisabled) { if (m_hBitmap && (!bSelected || bDisabled)) { pDC->BitBlt(rect.left, rect.top, rect.Width(), rect.Height(), &m_memDC, 0, rect.top, SRCCOPY); } else if (bSelected) { FillRect(pDC, rect, bDisabled? ((m_Style==STYLE_XP)?m_clrBackGround:m_clrSelectedBar) : m_clrSelectedBar); } else { FillRect(pDC, rect, m_clrBackGround); } //in XP mode, draw a line rectangle around if (m_Style == STYLE_XP && bSelected && !bDisabled) { CGdiObject *pOldBrush = pDC->SelectStockObject(HOLLOW_BRUSH); CGdiObject *pOldPen = pDC->SelectStockObject(BLACK_PEN); pDC->Rectangle(rect); pDC->SelectObject(pOldBrush); pDC->SelectObject(pOldPen); } } //draw the icon button, the icon is not included void CMenuXP::DrawButton(CDC *pDC, CRect rect, BOOL bSelected, BOOL bDisabled, BOOL bChecked) { if (m_Style == STYLE_OFFICE) { // normal: fill BG depending on state FillRect(pDC, rect, (bChecked && !bSelected) ? m_clrBackGround+RGB(2, 2, 2) : m_clrBackGround); // draw pushed-in or popped-out edge if (!bDisabled && (bSelected || bChecked) ) { pDC->DrawEdge(rect, bChecked ? BDR_SUNKENOUTER : BDR_RAISEDINNER, BF_RECT); } } else if (m_Style == STYLE_XP && !bSelected) { if (bChecked && !bDisabled) { DrawBackGround(pDC, rect, TRUE, FALSE); } } } //draw the icon area, the icon is not included, only in XP style void CMenuXP::Dr