根据定义好的格式进行绘图 　.zip_zip_绘图

// TcxOwnerDrawEngine.cpp : implementation file // // Author: Thales P. Carvalho // e-mail: thalesc@uol.com.br // // HISTORY: // 10/17/1999 #include "stdafx.h" #include "TcxOde.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // Local functions // Convert string to DWORD // RETURN: pointer to the first character after converted string static LPCTSTR _ParseNum( LPCTSTR psz, DWORD& dwOut ) { dwOut = 0; while( _istdigit(*psz) ) { ( dwOut *= 10 ) += ( *psz - _T('0') ); psz = _tcsinc(psz); } return psz; } // Skip text up to the next tag // RETURN: pointer to the first tag character ('<'), // or, if none is found, pointer to the end of // the string (null terminator) static LPCTSTR _SkipText( LPCTSTR psz ) { while( *psz != _T('\0') && *psz != _T('<') && *psz != _T('>') ) psz = _tcsinc(psz); return psz; } ///////////////////////////////////////////////////////////////////////////// // CTcxOwnerDrawEngine members // Constructor CTcxOwnerDrawEngine::CTcxOwnerDrawEngine() : m_pImgList(NULL), m_ColorHighLightText( ::GetSysColor( COLOR_HIGHLIGHTTEXT ) ), m_ColorHighLightBk( ::GetSysColor( COLOR_HIGHLIGHT ) ) { m_Tabs.SetSize( 0, 8 ); m_Styles.SetSize( 0, 8 ); m_DefaultStyle.dwId = MAXDWORD; m_DefaultStyle.chFontStyle = 0; m_DefaultTab.dwId = MAXDWORD; m_DefaultTab.xTab = 0; ::memset( m_ahFonts, 0, sizeof(m_ahFonts) ); } // Destructor CTcxOwnerDrawEngine::~CTcxOwnerDrawEngine() { DeleteFonts(); } // Set a style attributes void CTcxOwnerDrawEngine::SetStyle( DWORD dwStyleId, // style ID COLORREF clrText, // style's text color BOOL bBold, // style's font attribute (bold) BOOL bItalic, // style's font attribute (italic) BOOL bUnderline // style's font attribute (underline) ) { // Looking up the style ID in the style array. // If there's no entry for this style, LookupStyle // will create one and return its index. int i = LookupStyle( dwStyleId ); STYLE& style = m_Styles[i]; // Saving style information style.clrText = clrText; style.chFontStyle = 0; if( bBold ) style.chFontStyle |= STYLE::fBold; if( bItalic ) style.chFontStyle |= STYLE::fItalic; if( bUnderline ) style.chFontStyle |= STYLE::fUnderline; } // Called by the aggregator object to draw the item. void CTcxOwnerDrawEngine::DrawItem( LPDRAWITEMSTRUCT pDrw, // see DRAWITEMSTRUCT LPCTSTR pszText // item's tagged text ) { m_bUpdateLayout = false; if( !( pDrw->itemAction & (ODA_DRAWENTIRE|ODA_SELECT) ) ) { ::DrawFocusRect( pDrw->hDC, &pDrw->rcItem ); return; } ASSERT( m_DefaultStyle.dwId == MAXDWORD ); ASSERT( m_DefaultStyle.chFontStyle == 0 ); m_dwCurrentStyleId = MAXDWORD; m_bSelected = ( pDrw->itemState & ODS_SELECTED ) ? true : false; // Saving the DC's attributes (this is the default style) COLORREF clrBk = ::GetBkColor( pDrw->hDC ); COLORREF clrText = ::GetTextColor( pDrw->hDC ); HGDIOBJ hFont = ::GetCurrentObject( pDrw->hDC, OBJ_FONT ); ASSERT( hFont != NULL ); if( m_bSelected ) { // Modifying the DC to draw a selected item. ::SetTextColor( pDrw->hDC, m_ColorHighLightText ); ::SetBkColor( pDrw->hDC, m_ColorHighLightBk ); } // Erasing the item's background ::ExtTextOut( pDrw->hDC, 0, 0, ETO_OPAQUE, &pDrw->rcItem, NULL, 0, NULL ); // Storing the default style attributes m_ahFonts[0] = hFont; m_DefaultStyle.clrText = ::GetTextColor( pDrw->hDC ); // Doing the pre-calculations PreDraw( pszText, pDrw->hDC ); // Restoring the default style // (it might have been changed by PreDraw) SelectStyle( pDrw->hDC, &m_DefaultStyle ); // Drawing (finally!) Draw( pszText, pDrw->hDC, pDrw->rcItem ); // Drawing the focus rectangle - if any if( pDrw->itemState & ODS_FOCUS ) ::DrawFocusRect( pDrw->hDC, &pDrw->rcItem ); // Restoring DC's attributes ::SetTextColor( pDrw->hDC, clrText ); ::SetBkColor( pDrw->hDC, clrBk ); ::SelectObject( pDrw->hDC, hFont ); } // Release all created fonts. void CTcxOwnerDrawEngine::DeleteFonts() { // Font 0 (the default font) is never created by the engine. // Although, it uses the DC's font. m_ahFonts[0] = NULL; // Destroying all font objects that might have been // created by the engine. for( int i = 1; i < sizeof(m_ahFonts)/sizeof(m_ahFonts[0]); ++i ) { if( m_ahFonts[i] != NULL ) { ::DeleteObject( m_ahFonts[i] ); m_ahFonts[i] = NULL; } } } // Reset all tab marks void CTcxOwnerDrawEngine::DeleteTabs() { m_Tabs.RemoveAll(); m_DefaultTab.dwId = MAXDWORD; m_DefaultTab.xTab = 0; } ///////////////////////////////////////////////////////////////////////////// // CTcxOwnerDrawEngine private members // Look up a tab mark id in the array of tab marks. // RETURN: the tab mark index, or -1, if no item has been found or created int CTcxOwnerDrawEngine::LookupTab( DWORD dwId, // the tab mark id BOOL bCreate // if TRUE, creates the item if none is found ) { // Performing a binary search int iFirst = 0; int iLast = m_Tabs.GetUpperBound(); while( iFirst <= iLast ) { int i = ( iLast + iFirst ) / 2; int c = m_Tabs[i].dwId - dwId; if( c == 0 ) return i; if( c < 0 ) iFirst = i+1; else iLast = i-1; } if( !bCreate ) return -1; // no item found, no item created // No item found. Creating the item. TAB newTab = { dwId, MAXDWORD, 0, { 0, 0, 0 } }; m_Tabs.InsertAt( ++iLast, newTab ); return iLast; } // Look up a style id in the array of styles. // RETURN: the style index, or -1, if no item has been found or created int CTcxOwnerDrawEngine::LookupStyle( DWORD dwId, BOOL bCreate ) { // Performing a binary search int iFirst = 0; int iLast = m_Styles.GetUpperBound(); while( iFirst <= iLast ) { int i = ( iLast + iFirst ) / 2; int c = m_Styles[i].dwId - dwId; if( c == 0 ) return i; if( c < 0 ) iFirst = i+1; else iLast = i-1; } if( !bCreate ) return -1; // no item found, no item created // No item found. Creating the item. STYLE newStyle = { dwId, m_DefaultStyle.clrText, 0 }; m_Styles.InsertAt( ++iLast, newStyle ); return iLast; } // Called by PreDraw and Draw to select a style void CTcxOwnerDrawEngine::SelectStyleFromId( HDC hDC, DWORD dwStyleId ) { int i = LookupStyle( dwStyleId ); if( i < 0 ) return; SelectStyle( hDC, &m_Styles[i] ); } // Called by PreDraw and Draw to select a style void CTcxOwnerDrawEngine::SelectStyle( HDC hDC, const STYLE* pStyle ) { if( m_dwCurrentStyleId == pStyle->dwId ) return; m_dwCurrentStyleId = pStyle->dwId; if( !m_bSelected ) { // Only change the text color if the item is not selected. // Otherwise, the item will be drawn using the default // selected item colors. ::SetTextColor( hDC, pStyle->clrText ); } ASSERT( 0 <= pStyle->chFontStyle && pStyle->chFontStyle < 8 ); HGDIOBJ hFont = m_ahFonts[pStyle->chFontStyle]; if( hFont == NULL ) { // Regular font (default) must always be suplied ASSERT( pStyle->chFontStyle != 0 ); // The font for the selected style doesn't exist yet. // Creating the font. LOGFONT lf; ::GetObject( m_ahF