// GridURLCell.cpp: implementation of the CGridURLCell class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include "GridURLCell.h"
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#include "GridCtrl.h"
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IMPLEMENT_DYNCREATE(CGridURLCell, CGridCell)
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#ifndef _WIN32_WCE
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HCURSOR CGridURLCell::g_hLinkCursor = NULL;
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#endif
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// Possible prefixes that indicate a hyperlink
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URLStruct CGridURLCell::g_szURIprefixes[] = {
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{ _T("www."), _tcslen(_T("www.")) },
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{ _T("http:"), _tcslen(_T("http:")) },
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{ _T("mailto:"), _tcslen(_T("mailto:")) },
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{ _T("ftp:"), _tcslen(_T("ftp:")) },
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{ _T("https:"), _tcslen(_T("https:")) },
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{ _T("news:"), _tcslen(_T("news:")) },
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{ _T("gopher:"), _tcslen(_T("gopher:")) },
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{ _T("telnet:"), _tcslen(_T("telnet:")) },
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{ _T("url:"), _tcslen(_T("url:")) },
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{ _T("file:"), _tcslen(_T("file:")) },
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{ _T("ftp."), _tcslen(_T("ftp.")) }
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};
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CGridURLCell::CGridURLCell()
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{
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#ifndef _WIN32_WCE
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g_hLinkCursor = GetHandCursor();
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#endif
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m_bLaunchUrl = TRUE;
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m_clrUrl = GetSysColor(COLOR_HIGHLIGHT);
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}
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CGridURLCell::~CGridURLCell()
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{
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}
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BOOL CGridURLCell::Draw(CDC* pDC, int nRow, int nCol, CRect rect, BOOL bEraseBkgnd)
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{
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// If url is present then change text color
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if (HasUrl(GetText()))
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SetTextClr(m_clrUrl);
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// Good a place as any to store the bounds of the rect
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m_Rect = rect;
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return CGridCell::Draw(pDC, nRow, nCol, rect, bEraseBkgnd);
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}
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#pragma warning(disable:4100)
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BOOL CGridURLCell::Edit(int nRow, int nCol, CRect rect, CPoint point, UINT nID, UINT nChar)
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{
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return FALSE;
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}
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#pragma warning(default:4100)
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void CGridURLCell::OnClick(CPoint PointCellRelative)
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{
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#ifndef _WIN32_WCE
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CString strURL;
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if (GetAutoLaunchUrl() && OverURL(PointCellRelative, strURL))
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ShellExecute(NULL, _T("open"), strURL, NULL,NULL, SW_SHOW);
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#endif
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}
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// Return TRUE if you set the cursor
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BOOL CGridURLCell::OnSetCursor()
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{
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#ifndef _WIN32_WCE
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CString strURL;
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CPoint pt(GetMessagePos());
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GetGrid()->ScreenToClient(&pt);
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pt = pt - m_Rect.TopLeft();
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if (OverURL(pt, strURL))
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{
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SetCursor(g_hLinkCursor);
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return TRUE;
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}
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else
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#endif
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return CGridCell::OnSetCursor();
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}
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#ifndef _WIN32_WCE
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HCURSOR CGridURLCell::GetHandCursor()
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{
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if (g_hLinkCursor == NULL) // No cursor handle - load our own
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{
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// Get the windows directory
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CString strWndDir;
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GetWindowsDirectory(strWndDir.GetBuffer(MAX_PATH), MAX_PATH);
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strWndDir.ReleaseBuffer();
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strWndDir += _T("\\winhlp32.exe");
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// This retrieves cursor #106 from winhlp32.exe, which is a hand pointer
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HMODULE hModule = LoadLibrary(strWndDir);
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if( hModule )
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{
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HCURSOR hHandCursor = ::LoadCursor(hModule, MAKEINTRESOURCE(106));
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if( hHandCursor )
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{
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g_hLinkCursor = CopyCursor(hHandCursor);
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}
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}
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FreeLibrary(hModule);
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}
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return g_hLinkCursor;
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}
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#endif
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////////////////////////////////////////////////////////////////////////////////////////////
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// Helper functions
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BOOL CGridURLCell::HasUrl(CString str)
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{
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int nNumPrefixes = sizeof(g_szURIprefixes) / sizeof(g_szURIprefixes[0]);
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for (int i = 0; i < nNumPrefixes; i++)
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//if (str.Left(g_szURIprefixes[i].nLength) == g_szURIprefixes[i].szURLPrefix)
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if (str.Find(g_szURIprefixes[i].szURLPrefix) >= 0)
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return TRUE;
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return FALSE;
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}
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// here we figure out if we are over a URL or not
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BOOL CGridURLCell::OverURL(CPoint& pt, CString& strURL)
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{
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//TRACE2("Checking point %d,%d\n",pt.x,pt.y);
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BOOL bOverURL = FALSE;
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CSize size = GetTextExtent(GetText());
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// Add left of cell so we know if we clicked on text or not
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pt.x += m_Rect.left;
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CPoint center = m_Rect.CenterPoint();
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if ((m_nFormat & DT_RIGHT) && pt.x >= (m_Rect.right - size.cx))
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{
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bOverURL = TRUE;
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}
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else if ((m_nFormat & DT_CENTER) &&
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((center.x - (size.cx/2)) <= pt.x) && (pt.x <= (center.x + (size.cx/2))) )
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{
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bOverURL = TRUE;
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}
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else if (pt.x <= (size.cx + m_Rect.left))
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{
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bOverURL = TRUE;
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}
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if (!bOverURL)
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return FALSE;
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// We are over text - but are we over a URL?
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bOverURL = FALSE;
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strURL = GetText();
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// Use float, otherwise we get an incorrect letter from the point
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float width = (float)size.cx/(float)strURL.GetLength();
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// remove left of cell so we have original point again
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pt.x -= m_Rect.left;
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if (m_nFormat & DT_RIGHT)
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{
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int wide = m_Rect.Width() - size.cx;
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pt.x -= wide;
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if (pt.x <= 0)
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return FALSE;
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}
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if (m_nFormat & DT_CENTER)
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{
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int wide = m_Rect.Width() - size.cx;
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pt.x -= (wide/2);
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if (pt.x <= 0 || pt.x > (size.cx + (wide/2)))
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return FALSE;
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}
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// Turn point into a letter
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int ltrs = (int)((float)pt.x/width);
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#if !defined(_WIN32_WCE) || (_WIN32_WCE > 210)
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// Find spaces before and after letter, process text between
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int endSpace = strURL.Find(_T(' '), ltrs);
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if (endSpace != -1)
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strURL.Delete(endSpace, strURL.GetLength()-endSpace);
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int beginSpace = strURL.ReverseFind(_T(' '));
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if (beginSpace != -1)
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strURL.Delete(0, ++beginSpace);
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#endif
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// Does text have url
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return HasUrl(strURL);
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}
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