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//////////////////////////////////////////////////////////////// // CoolMenu 1997 Microsoft Systems Journal. // If this code works, it was written by Paul DiLascia. // If not, I don't know who wrote it. // #include "StdAfx.h" #include "CoolMenu.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif // if you want to see extra TRACE diagnostics, set below to TRUE BOOL CCoolMenuManager::bTRACE = FALSE; #ifdef _DEBUG #define CMTRACEFN \ CTraceFn __fooble; \ if (bTRACE) \ TRACE #define CMTRACE \ if (bTRACE) \ TRACE #else #define CMTRACEFN TRACE #define CMTRACE TRACE #endif // constants used for drawing const CXGAP = 1; // 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; // identifies owner-draw data as mine const LONG MYITEMID = MAKELONG(MAKEWORD('m','i'),MAKEWORD('d','0')); // private struct: one of these for each owner-draw menu item struct CMyItemData { long magicNum; // magic number identifying me CString text; // item text UINT fType; // original item type flags int iButton; // index of button image in image list CMyItemData() { magicNum = MYITEMID; } BOOL IsMyItemData() { return magicNum == MYITEMID; } }; IMPLEMENT_DYNAMIC(CCoolMenuManager, CSubclassWnd) CCoolMenuManager::CCoolMenuManager() { m_szBitmap = m_szButton = CSize(0,0); // will compute later m_bShowButtons = TRUE; // show buttons by default m_bAutoAccel = TRUE; // auto accelerators by default m_hAccel = NULL; // no accelerators loaded yet m_pAccel = NULL; // no accelerators loaded yet m_bUseDrawState = FALSE; // use DrawEmbossed by default m_bDrawDisabledButtonsInColor = FALSE; // use color for disabled buttons FixMFCDotBitmap(); } CCoolMenuManager::~CCoolMenuManager() { Destroy(); } ////////////////// // Destroy everything. Called from destructor and Refresh. // void CCoolMenuManager::Destroy() { m_ilButtons.DeleteImageList(); m_mapIDtoImage.RemoveAll(); m_szBitmap = m_szButton = CSize(0,0); m_arToolbarID.RemoveAll(); m_fontMenu.DeleteObject(); DestroyAccel(); } ///////////////// // Destroy accelerators // void CCoolMenuManager::DestroyAccel() { m_mapIDtoAccel.RemoveAll(); // delete ACCEL entries in map delete m_pAccel; // delete current accelerators m_pAccel = NULL; // ... } ////////////////// // Call this to install the menu manager. Install(NULL) to un-install. // void CCoolMenuManager::Install(CFrameWnd* pFrame) { ASSERT_VALID(pFrame); m_pFrame = pFrame; HookWindow(pFrame); // install message hook } ////////////////// // Load array of toolbar IDs. // BOOL CCoolMenuManager::LoadToolbars(const UINT* arID, int n) { ASSERT(arID); BOOL bRet = TRUE; for (int i=0; i<n; i++) bRet |= LoadToolbar(arID[i]); return bRet; } // structure of RT_TOOLBAR resource struct TOOLBARDATA { WORD wVersion; // version # should be 1 WORD wWidth; // width of one bitmap WORD wHeight; // height of one bitmap WORD wItemCount; // number of items WORD items[1]; // array of command IDs, actual size is wItemCount }; ////////////////// // Load one toolbar. Assumes bg color is gray. // // * add toolbar bitmap to image list // * add each button ID to button map // BOOL CCoolMenuManager::LoadToolbar(UINT nIDToolbar) { // load bitmap HBITMAP hbmToolbar = PxLib::LoadSysColorBitmap(nIDToolbar); if (!hbmToolbar) { TRACE(_T("*** Can't load bitmap for toolbar %d!\n"), nIDToolbar); return FALSE; } CBitmap bmToolbar; bmToolbar.Attach(hbmToolbar); // destructor will detach & destroy // load toolbar LPTSTR lpResName = MAKEINTRESOURCE(nIDToolbar); HINSTANCE hInst; HRSRC hRsrc; TOOLBARDATA* ptbd; if ((hInst= AfxFindResourceHandle(lpResName, RT_TOOLBAR)) == NULL || (hRsrc= FindResource(hInst, lpResName, RT_TOOLBAR)) == NULL || (ptbd = (TOOLBARDATA*)LoadResource(hInst, hRsrc)) == NULL) { TRACE(_T("*** Can't load toolbar %d!\n"), nIDToolbar); return FALSE; } ASSERT(ptbd->wVersion==1); // OK, I have the bitmap and toolbar. CSize sz(ptbd->wWidth, ptbd->wHeight); if (m_szBitmap.cx==0) { // First toolbar: initialized bitmap/button sizes and create image list. m_szBitmap = sz; m_szButton = sz + CSize(CXBUTTONMARGIN<<1, CYBUTTONMARGIN<<1); VERIFY(m_ilButtons.Create(sz.cx, sz.cy, ILC_MASK, 0, 10)); } else if (m_szBitmap != sz) { // button sizes different -- oops TRACE(_T("*** Toolbar %d button size differs!\n"), nIDToolbar); return FALSE; } // I have a good toolbar: now add bitmap to the image list, and each // command ID to m_mapIDtoImage array. Note that LoadSysColorBitmap will // change gray -> COLOR_3DFACE, so use that for image list background. // int iNextImage = m_ilButtons.GetImageCount(); m_ilButtons.Add(&bmToolbar, GetSysColor(COLOR_3DFACE)); for (int i = 0; i < ptbd->wItemCount; i++) { UINT nID = ptbd->items[i]; if (nID > 0) { if (GetButtonIndex(nID) >= 0) { TRACE(_T("*** Duplicate button ID %d ignored\n"), nID); } else { m_mapIDtoImage.SetAt(nID, (void*)iNextImage); TRACE("CCoolMenuManager::LoadToolbar(). Added Menu Id %d, Button Number %d\n", nID, iNextImage-1); } // Andrew Bancroft 13-08-98. Since we've already added the entire toolbar to the imagelist // we need to increment nNextImage even if we didn't add this button to // m_mapIDtoImage. iNextImage++; } } m_arToolbarID.Add(nIDToolbar); // remember toolbar ID for Refresh bmToolbar.Detach(); return TRUE; // success! } ////////////////// // Virtual CSubclassWnd window proc. All messages come here before frame // window. Isn't it cool? Just like in the old days! // LRESULT CCoolMenuManager::WindowProc(UINT msg, WPARAM wp, LPARAM lp) { switch(msg) { case WM_SYSCOLORCHANGE: case WM_SETTINGCHANGE: Refresh(); break; case WM_MEASUREITEM: if (OnMeasureItem((MEASUREITEMSTRUCT*)lp)) return TRUE; // handled break; case WM_DRAWITEM: if (OnDrawItem((DRAWITEMSTRUCT*)lp)) return TRUE; // handled break; case WM_INITMENUPOPUP: // Very important: must let frame window handle it first! // Because if someone calls CCmdUI::SetText, MFC will change item to // MFT_STRING, so I must change back to MFT_OWNERDRAW. // CSubclassWnd::WindowProc(msg, wp, lp); OnInitMenuPopup(CMenu::FromHandle((HMENU)wp), (UINT)LOWORD(lp), (BOOL)HIWORD(lp)); return 0; case WM_MENUSELECT: OnMenuSelect((UINT)LOWORD(wp), (UINT)HIWORD(wp), (HMENU)lp); break; case WM_MENUCHAR: LRESULT lr = OnMenuChar((TCHAR)LOWORD(wp), (UINT)HIWORD(wp), CMenu::FromHandle((HMENU)lp)); if (lr!=0) return lr; break; } return CSubclassWnd::WindowProc(msg, wp, lp); } ////////////////// // Refresh all colors, fonts, etc. For WM_SETTINGCHANGE, WM_SYSCOLORCHANGE. // void CCoolMenuManager::Refresh() { // first copy list (array) of toolbar IDs now loaded. CUIntArray arToolbarID; arToolbarID.Copy(m_arToolbarID); // destroy everything Destroy(); // re-load toolbars. int nToolbars = arToolbarID.GetSize(); for (int i = 0; i < nToolbars; i++) LoadToolbar(arToolbarID[i]); } ////////////////// // Get menu font, creating if needed // CFont* CCoolMenuManager::GetMenuFont() { if (!(HFONT)m_fontMenu) { NONCLIENTMETRICS info; info.cbSize = sizeof(info); SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(info), &info, 0); VERIFY(m_fontMenu.CreateFontIndirect(&info.lfMenuFont)); } return &m_fontMenu; } ////////////////// // Handle WM_MEASUREITEM on behalf of frame: compute menu