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GridCtrl.cpp
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GridCtrl.cpp
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// GridCtrl.cpp : implementation file
//
// MFC Grid Control v2.23
//
// Written by Chris Maunder <cmaunder@mail.com>
// Copyright (c) 1998-2001. All Rights Reserved.
//
// The code contained in this file is based on the original
// WorldCom Grid control written by Joe Willcoxson,
// mailto:chinajoe@aol.com
// http://users.aol.com/chinajoe
// (These addresses may be out of date) The code has gone through
// so many modifications that I'm not sure if there is even a single
// original line of code. In any case Joe's code was a great
// framework on which to build.
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed unmodified by any means PROVIDING it is
// not sold for profit without the authors written consent, and
// providing that this notice and the authors name and all copyright
// notices remains intact.
//
// An email letting me know how you are using it would be nice as well.
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability for any damage/loss of business that
// this product may cause.
//
// Expect bugs!
//
// Please use and enjoy, and let me know of any bugs/mods/improvements
// that you have found/implemented and I will fix/incorporate them into
// this file.
//
// History:
// --------
// This control is constantly evolving, sometimes due to new features that I
// feel are necessary, and sometimes due to existing bugs. Where possible I
// have credited the changes to those who contributed code corrections or
// enhancements (names in brackets) or code suggestions (suggested by...)
//
// 1.0 - 1.13 20 Feb 1998 - 6 May 1999
// First release version. Progressed from being a basic
// grid based on the original WorldCom Grid control
// written by Joe Willcoxson (mailto:chinajoe@aol.com,
// http://users.aol.com/chinajoe) to something a little
// more feature rich. Rewritten so many times I doubt
// there is a single line of Joe's code left. Many, many,
// MANY people sent in bug reports and fixes. Thank you
// all.
//
// 2.0 1 Feb 2000
// Rewritten to make the grid more object oriented, in
// that the CGridCell class now takes care of cell-specific
// tasks. This makes the code more robust, but more
// importantly it allows the simple insertion of other
// types of cells.
//
// 2.01 20 Feb 2000 - Eric Woodruff
// Added better support for printing grids and
// also fixed some other minor problems.
//
// 2.02 29 Feb 2000 - Brian V. Shifrin, Scot Reed,
// Fixes to reduce flicker, fix font selection bug,
// Fixed SetFixed[Row/Col]Count bug
//
// 2.03 28 Mar 2000 - Aqiruse (marked with //FNA)
// Titletips now use cell color
//
// 2.10 11 Mar 2000 - Ken Bertelson and Chris Maunder
// - Additions for virtual CGridCell support of embedded tree
// & cell buttons implementation
// - Optional WYSIWYG printing
// - Awareness of hidden (0 width/height) rows and columns for
// key movements, cut, copy, paste, and autosizing
// - CGridCell can make title tips display any text rather than
// cell text only
// - Minor vis bug fixes
// - CGridCtrl now works with CGridCellBase instead of CGridCell
// This is a taste of things to come.
//
// 2.11 19 May 2000 - Chris Maunder
// - Increasing fixed cells clashed with selected cells (Ivan Ilinov)
// - AutoSizeRows obvous bug fixed
// - OnLButtonDown fix (Ken Bertelson)
// - ExpandToFit bug fixed (scrollbar space) (Igor Proskuriakov)
// - List mode selection/deselection fixed
// - Keyboard cell movement improved. You can now see the cells!
// - m_nBarState MS madness fixed (Phil K)
//
// 2.12 26 May 2000 - Martin Richter
// - If using TRY/CATCH (winCE) instead of try/catch (win32),
// e->Delete is not called
// - EnsureVisible "fix" was fixed properly.
//
// 2.20 30 Jul 2000 - Chris Maunder
// - Font storage optimised (suggested by Martin Richter)
// - AutoSizeColumn works on either column header, data or both
// - EnsureVisible. The saga continues... (Ken)
// - Rewrote exception handling
// - Added TrackFocusCell and FrameFocusCell properties, as well as
// ExpandLastColumn (suggested by Bruce E. Stemplewski).
// - InsertColumn now allows you to insert columns at the end of the
// column range (David Weibel)
// - Shift-cell-selection more intuitive
// - API change: Set/GetGridColor now Set/GetGridLineColor
// - API change: Set/GetBkColor now Set/GetGridBkColor
// - API change: Set/GetTextColor, Set/GetTextBkColor depricated
// - API change: Set/GetFixedTextColor, Set/GetFixedBkColor depricated
// - Stupid DDX_GridControl workaround removed.
// - Added "virtual mode" via Set/GetVirtualMode
// - Added SetCallbackFunc to allow callback functions in virtual mode
// - Added Set/GetAutoSizeStyle
// - AutoSize() bug fixed
// - added GVIS_FIXEDROW, GVIS_FIXEDCOL states
// - added Get/SetFixed[Row|Column]Selection
// - cell "Get" methods now const'd. Sorry folks...
// - GetMouseScrollLines now uses win98/W2K friendly code
// - WS_EX_CLIENTEDGE style now implicit
//
// 2.21 29 Aug 2000 - Chris Maunder
// - re-jigged OLE initialisation and drag/drop registration
// - Cut and Paste bug fixed (empty cells not being treated correctly)
// - Added "bExpandFixed" parameter to Expand*ToFit functions (Hans-Peter Werner)
// - SetRedraw bug fixed
// - Resizing 0-width last row and column now works
// - Fixed CreateCell SetFormat bug (Loic Baudry)
// - Fixed GetFixedTextColor typo (raybie@Exabyte.COM)
// - Modified EnableScrollBars calls in Expand*ToFit functions (Simon Hughes)
// - GetCellFromPt now public
// - GV_CACHEHINT sent more appropriately, and also sent with -1 cellrange
// at the end of operations (so App can discard data - Martin Richter)
// - CGridCellBase::operator= checks for NULL font before setting (Martin Richter)
// - After drag/drop, mouse button was still marked as "down". Fixed.
//
// 2.22 1 Jan 2001 - Chris Maunder
// - SetModified bug in SetItem (Keith Worden)
// - ifdef around SetItemTextFmt corrected for win32
// - Save() bug fixed (row 0 saved twice)
// - GetTopleftNonFixedCell, GetUnobstructedNonFixedCellRange and
// GetVisibleNonFixedCellRange have optional parameter to force recalc.
// - added virtual ValidateEdit.
// - if the return value from the SendMessage operation for
// GVN_ENDLABELEDIT or GVN_BEGINLABELEDIT is < 0 then the
// edit, or the attempt to edit (respectively) is rejected.
// - Added GetEditWnd to CGridCellBase
// - Fixed the paste bug for cells being edited (Gary Lyben).
// - GVN_SELCHANGING/GVN_SELCHANGED messages now sent correctly
// - OnRButtonUp was not handling clicks on fixed cells correctly
// - SB_ENDSCROLL message now sent on keypress initiated scroll
// - GetCellTextExtent bug fixed (Elco)
// - SetSelectedRange inefficiency fixed by huangchaoyi <ahaa007@263.net>
// - DT_NOCLIP removed from CGridCellBase::Paint
// - SetRowCount returns correct value on OOM condition (asigal@hotmail.com)
// - Bug when editing using Japanese characters fixed (Michael Dunn)
// - Fixed columns and rows printed correctly (fletch - untested)
// - Added the "ClearCells" function
//
// TODO: 1) Implement sparse grids (super easy now)
// 2) Fix it so that as you drag select, the speed of selection increases
// with time.
// 3) Scrolling is still a little dodgy (too much grey area). I know there
// is a simple fix but it's been a low priority5
// 4) Get some sleep
//
// ISSUES: 1) Crashes in the HPC/Pro emulation - but works fine on a device. ???
// 2) WindowFromPoint seems to do weird things in W2K. Causing problems for
// the rigt-click-on-titletip code.
//
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "MemDC.h"
#include "GridCtrl.h"
// OLE stuff for clipboard operations
#include <afxadv.h> // For CSharedFile
#include <afxconv.h> // For LPTSTR -> LPSTR macros
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
// Spit out some messages as a sanity check for programmers
#ifdef GRIDCONTROL_NO_TITLETIPS
#pragma message(" -- CGridCtrl: No titletips for cells with large data")
#endif
#ifdef GRIDCONTROL_NO_DRAGDROP
#pragma message(" -- CGridCtrl: No OLE drag and drop")
#endif
#ifdef GRIDCONTROL_NO_CLIPBOARD
#pragma message(" -- CGridCtrl: No clipboard support")
#endif
#ifdef GRIDCONTROL_NO_PRINTING
#pragma message(" -- CGridCtrl: No printing support")
#endif
IMPLEMENT_DYNCREATE(CGridCtrl, CWnd)
// Get the number of lines to scroll with each mouse wheel notch
// Why doesn't windows give us this function???
UINT GetMouseScrollLines()
{
int nScrollLines = 3; // reasonable default
#ifndef _WIN32_WCE
// Do things the hard way in win95
OSVERSIONINFO VersionInfo;
VersionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx(&VersionInfo) ||
(VersionInfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS && VersionInfo.dwMinorVersion == 0))
{
HKEY hKey;
if (RegOpenKeyEx(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"),
0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
{
TCHAR szData[128];
DWORD dwKeyDataType;
DWORD dwDataBufSize = sizeof(szData);
if (RegQueryValueEx(hKey, _T("WheelScrollLines"), NULL, &dwKeyDataType,
(LPBYTE) &szData, &dwDataBufSize) == ERROR_SUCCESS)
{
nScrollLines = _tcstoul(szData, NULL, 10);
}
RegCloseKey(hKey);
}
}
// win98 or greater
else
SystemParametersInfo (SPI_GETWHEELSCROLLLINES, 0, &nScrollLines, 0);
#endif
return nScrollLines;
}
/////////////////////////////////////////////////////////////////////////////
// CGridCtrl
CGridCtrl::CGridCtrl(int nRows, int nCols, int nFixedRows, int nFixedCols)
{
RegisterWindowClass();
#if !defined(GRIDCONTROL_NO_DRAGDROP) || !defined(GRIDCONTROL_NO_CLIPBOARD)
_AFX_THREAD_STATE* pState = AfxGetThreadState();
if (!pState->m_bNeedTerm && !AfxOleInit())
AfxMessageBox(_T("OLE initialization failed. Make sure that the OLE libraries are the correct version"));
#endif
// Store the system colours in case they change. The gridctrl uses
// these colours, and in OnSysColorChange we can check to see if
// the gridctrl colours have been changed from the system colours.
// If they have, then leave them, otherwise change them to reflect
// the new system colours.
m_crWindowText = ::GetSysColor(COLOR_WINDOWTEXT);
m_crWindowColour = ::GetSysColor(COLOR_WINDOW);
m_cr3DFace = ::GetSysColor(COLOR_3DFACE);
m_crShadow = ::GetSysColor(COLOR_3DSHADOW);
m_crGridLineColour = RGB(192,192,192);
m_nRows = 0;
m_nCols = 0;
m_nFixedRows = 0;
m_nFixedCols = 0;
m_bVirtualMode = FALSE;
m_pfnCallback = NULL;
m_bAutoFit = FALSE;
m_nVScrollMax = 0; // Scroll position
m_nHScrollMax = 0;
m_nRowsPerWheelNotch = GetMouseScrollLines(); // Get the number of lines
// per mouse wheel notch to scroll
m_nBarState = GVL_NONE;
m_MouseMode = MOUSE_NOTHING;
m_nGridLines = GVL_BOTH;
m_bEditable = TRUE;
m_bListMode = FALSE;
m_bSingleRowSelection = FALSE;
m_bSingleColSelection = FALSE;
m_bLMouseButtonDown = FALSE;
m_bRMouseButtonDown = FALSE;
m_bAllowDraw = TRUE; // allow draw updates
m_bEnableSelection = TRUE;
m_bFixedColumnSelection = TRUE;
m_bFixedRowSelection = TRUE;
m_bAllowRowResize = TRUE;
m_bAllowColumnResize = TRUE;
m_bSortOnClick = FALSE; // Sort on header row click
m_bHandleTabKey = TRUE;
#ifdef _WIN32_WCE
m_bDoubleBuffer = FALSE; // Use double buffering to avoid flicker?
#else
m_bDoubleBuffer = TRUE; // Use double buffering to avoid flicker?
#endif
m_bTitleTips = TRUE; // show cell title tips
m_bWysiwygPrinting = FALSE; // use size-to-width printing
m_bHiddenColUnhide = TRUE; // 0-width columns can be expanded via mouse
m_bHiddenRowUnhide = TRUE; // 0-Height rows can be expanded via mouse
m_bAllowColHide = TRUE; // Columns can be contracted to 0-width via mouse
m_bAllowRowHide = TRUE; // Rows can be contracted to 0-height via mouse
m_bAscending = TRUE; // sorting stuff
m_nSortColumn = -1;
m_pfnCompare = NULL;
m_nAutoSizeColumnStyle = GVS_BOTH; // Autosize grid using header and data info
m_nTimerID = 0; // For drag-selection
m_nTimerInterval = 25; // (in milliseconds)
m_nResizeCaptureRange = 3; // When resizing columns/row, the cursor has to be
// within +/-3 pixels of the dividing line for
// resizing to be possible
m_pImageList = NULL; // Images in the grid
m_bAllowDragAndDrop = FALSE; // for drag and drop - EFW - off by default
m_bTrackFocusCell = TRUE; // Track Focus cell?
m_bFrameFocus = TRUE; // Frame the selected cell?
m_pRtcDefault = RUNTIME_CLASS(CGridCell);
SetupDefaultCells();
SetGridBkColor(m_crShadow);
// Set up the initial grid size
SetRowCount(nRows);
SetColumnCount(nCols);
SetFixedRowCount(nFixedRows);
SetFixedColumnCount(nFixedCols);
SetTitleTipTextClr(CLR_DEFAULT); //FNA
SetTitleTipBackClr(CLR_DEFAULT);
// set initial selection range (ie. none)
#ifdef USE_CMAP
m_SelectedCellMap.RemoveAll();
m_PrevSelectedCellMap.RemoveAll();
#else
m_SelMap.clear();
m_PrevSelMap.clear();
#endif
#if !defined(_WIN32_WCE_NO_PRINTING) && !defined(GRIDCONTROL_NO_PRINTING)
// EFW - Added to support shaded/unshaded printout and
// user-definable margins.
m_bShadedPrintOut = TRUE;
SetPrintMarginInfo(2, 2, 4, 4, 1, 1, 1);
#endif
}
CGridCtrl::~CGridCtrl()
{
DeleteAllItems();
#ifndef GRIDCONTROL_NO_TITLETIPS
if (m_bTitleTips && ::IsWindow(m_TitleTip.GetSafeHwnd()))
m_TitleTip.DestroyWindow();
#endif
DestroyWindow();
#if !defined(GRIDCONTROL_NO_DRAGDROP) || !defined(GRIDCONTROL_NO_CLIPBOARD)
// BUG FIX - EFW
COleDataSource *pSource = COleDataSource::GetClipboardOwner();
if(pSource)
COleDataSource::FlushClipboard();
#endif
}
// Register the window class if it has not already been registered.
BOOL CGridCtrl::RegisterWindowClass()
{
WNDCLASS wndcls;
HINSTANCE hInst = AfxGetInstanceHandle();
//HINSTANCE hInst = AfxGetResourceHandle();
if (!(::GetClassInfo(hInst, GRIDCTRL_CLASSNAME, &wndcls)))
{
// otherwise we need to register a new class
wndcls.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
wndcls.lpfnWndProc = ::DefWindowProc;
wndcls.cbClsExtra = wndcls.cbWndExtra = 0;
wndcls.hInstance = hInst;
wndcls.hIcon = NULL;
#ifndef _WIN32_WCE_NO_CURSOR
wndcls.hCursor = AfxGetApp()->LoadStandardCursor(IDC_ARROW);
#else
wndcls.hCursor = 0;
#endif
wndcls.hbrBackground = (HBRUSH) (COLOR_3DFACE + 1);
wndcls.lpszMenuName = NULL;
wndcls.lpszClassName = GRIDCTRL_CLASSNAME;
if (!AfxRegisterClass(&wndcls))
{
AfxThrowResourceException();
return FALSE;
}
}
return TRUE;
}
BOOL CGridCtrl::Initialise()
{
// Stop re-entry problems
static BOOL bInProcedure = FALSE;
if (bInProcedure)
return FALSE;
bInProcedure = TRUE;
#ifndef GRIDCONTROL_NO_TITLETIPS
m_TitleTip.SetParentWnd(this);
#endif
if (::IsWindow(m_hWnd))
ModifyStyleEx(0, WS_EX_CLIENTEDGE, 0);
bInProcedure = FALSE;
return TRUE;
}
// creates the control - use like any other window create control
BOOL CGridCtrl::Create(const RECT& rect, CWnd* pParentWnd, UINT nID, DWORD dwStyle)
{
ASSERT(pParentWnd->GetSafeHwnd());
if (!CWnd::Create(GRIDCTRL_CLASSNAME, NULL, dwStyle, rect, pParentWnd, nID))
return FALSE;
//Initialise();
// The number of rows and columns will only be non-zero if the constructor
// was called with non-zero initialising parameters. If this window was created
// using a dialog template then the number of rows and columns will be 0 (which
// means that the code below will not be needed - which is lucky 'cause it ain't
// gonna get called in a dialog-template-type-situation.
TRY
{
m_arRowHeights.SetSize(m_nRows); // initialize row heights
m_arColWidths.SetSize(m_nCols); // initialize column widths
m_col_size.resize(m_nCols, -1); // init column size when last resized
}
CATCH (CMemoryException, e)
{
e->ReportError();
return FALSE;
}
END_CATCH
int i;
for (i = 0; i < m_nRows; i++)
m_arRowHeights[i] = m_cellDefault.GetHeight();
for (i = 0; i < m_nCols; i++)
m_arColWidths[i] = m_cellDefault.GetWidth();
ResetScrollBars(); //- called in OnSize anyway
return TRUE;
}
// Set background colour of the fixed (header) cells
void CGridCtrl::SetFixedBackClr(COLORREF clr)
{
m_cellFixedColDef.SetBackClr(clr);
m_cellFixedRowDef.SetBackClr(clr);
m_cellFixedRowColDef.SetBackClr(clr);
}
void CGridCtrl::SetupDefaultCells()
{
m_cellDefault.SetGrid(this); // Normal editable cell
m_cellFixedColDef.SetGrid(this); // Cell for fixed columns
m_cellFixedRowDef.SetGrid(this); // Cell for fixed rows
m_cellFixedRowColDef.SetGrid(this); // Cell for area overlapped by fixed columns/rows
m_cellDefault.SetTextClr(m_crWindowText);
m_cellDefault.SetBackClr(m_crWindowColour);
m_cellFixedColDef.SetTextClr(m_crWindowText);
m_cellFixedColDef.SetBackClr(m_cr3DFace);
m_cellFixedRowDef.SetTextClr(m_crWindowText);
m_cellFixedRowDef.SetBackClr(m_cr3DFace);
m_cellFixedRowColDef.SetTextClr(m_crWindowText);
m_cellFixedRowColDef.SetBackClr(m_cr3DFace);
}
void CGridCtrl::PreSubclassWindow()
{
CWnd::PreSubclassWindow();
//HFONT hFont = ::CreateFontIndirect(m_cellDefault.GetFont());
//OnSetFont((LPARAM)hFont, 0);
//DeleteObject(hFont);
Initialise();
// ResetScrollBars(); - called in OnSize anyway
}
// Sends a message to the parent in the form of a WM_NOTIFY message with
// a NM_GRIDVIEW structure attached
LRESULT CGridCtrl::SendMessageToParent(int nRow, int nCol, int nMessage) const
{
if (!IsWindow(m_hWnd))
return 0;
NM_GRIDVIEW nmgv;
nmgv.iRow = nRow;
nmgv.iColumn = nCol;
nmgv.hdr.hwndFrom = m_hWnd;
nmgv.hdr.idFrom = GetDlgCtrlID();
nmgv.hdr.code = nMessage;
CWnd *pOwner = GetOwner();
if (pOwner && IsWindow(pOwner->m_hWnd))
return pOwner->SendMessage(WM_NOTIFY, nmgv.hdr.idFrom, (LPARAM)&nmgv);
else
return 0;
}
// Send a request to the parent to return information on a given cell
LRESULT CGridCtrl::SendDisplayRequestToParent(GV_DISPINFO* pDisplayInfo) const
{
if (!IsWindow(m_hWnd))
return 0;
// Fix up the message headers
pDisplayInfo->hdr.hwndFrom = m_hWnd;
pDisplayInfo->hdr.idFrom = GetDlgCtrlID();
pDisplayInfo->hdr.code = GVN_GETDISPINFO;
// Send the message
CWnd *pOwner = GetOwner();
if (pOwner && IsWindow(pOwner->m_hWnd))
return pOwner->SendMessage(WM_NOTIFY, pDisplayInfo->hdr.idFrom, (LPARAM)pDisplayInfo);
else
return 0;
}
// Send a hint to the parent about caching information
LRESULT CGridCtrl::SendCacheHintToParent(const CCellRange& range) const
{
if (!IsWindow(m_hWnd))
return 0;
GV_CACHEHINT CacheHint;
// Fix up the message headers
CacheHint.hdr.hwndFrom = m_hWnd;
CacheHint.hdr.idFrom = GetDlgCtrlID();
CacheHint.hdr.code = GVN_ODCACHEHINT;
CacheHint.range = range;
// Send the message
CWnd *pOwner = GetOwner();
if (pOwner && IsWindow(pOwner->m_hWnd))
return pOwner->SendMessage(WM_NOTIFY, CacheHint.hdr.idFrom, (LPARAM)&CacheHint);
else
return 0;
}
BEGIN_MESSAGE_MAP(CGridCtrl, CWnd)
//EFW - Added ON_WM_RBUTTONUP
//{{AFX_MSG_MAP(CGridCtrl)
ON_WM_PAINT()
ON_WM_HSCROLL()
ON_WM_VSCROLL()
ON_WM_SIZE()
ON_WM_LBUTTONUP()
ON_WM_LBUTTONDOWN()
ON_WM_MOUSEMOVE()
ON_WM_TIMER()
ON_WM_GETDLGCODE()
ON_WM_KEYDOWN()
ON_WM_CHAR()
ON_WM_LBUTTONDBLCLK()
ON_WM_ERASEBKGND()
ON_UPDATE_COMMAND_UI(ID_EDIT_SELECT_ALL, OnUpdateEditSelectAll)
ON_COMMAND(ID_EDIT_SELECT_ALL, OnEditSelectAll)
ON_WM_SYSKEYDOWN()
//}}AFX_MSG_MAP
#ifndef _WIN32_WCE_NO_CURSOR
ON_WM_SETCURSOR()
#endif
#ifndef _WIN32_WCE
ON_WM_RBUTTONUP()
ON_WM_SYSCOLORCHANGE()
ON_WM_CAPTURECHANGED()
#endif
#ifndef GRIDCONTROL_NO_CLIPBOARD
ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
ON_UPDATE_COMMAND_UI(ID_EDIT_COPY, OnUpdateEditCopy)
ON_COMMAND(ID_EDIT_CUT, OnEditCut)
ON_UPDATE_COMMAND_UI(ID_EDIT_CUT, OnUpdateEditCut)
ON_COMMAND(ID_EDIT_PASTE, OnEditPaste)
ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE, OnUpdateEditPaste)
#endif
#if (_WIN32_WCE >= 210)
ON_WM_SETTINGCHANGE()
#endif
#if !defined(_WIN32_WCE) && (_MFC_VER >= 0x0421)
ON_WM_MOUSEWHEEL()
#endif
ON_MESSAGE(WM_SETFONT, OnSetFont)
ON_MESSAGE(WM_GETFONT, OnGetFont)
ON_MESSAGE(WM_IME_CHAR, OnImeChar)
ON_NOTIFY(GVN_ENDLABELEDIT, IDC_INPLACE_CONTROL, OnEndInPlaceEdit)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CGridCtrl message handlers
void CGridCtrl::OnPaint()
{
CPaintDC dc(this); // device context for painting
if (m_bDoubleBuffer) // Use a memory DC to remove flicker
{
CGridMemDC MemDC(&dc);
OnDraw(&MemDC);
}
else // Draw raw - this helps in debugging vis problems.
OnDraw(&dc);
}
BOOL CGridCtrl::OnEraseBkgnd(CDC* /*pDC*/)
{
return TRUE; // Don't erase the background.
}
// Custom background erasure. This gets called from within the OnDraw function,
// since we will (most likely) be using a memory DC to stop flicker. If we just
// erase the background normally through OnEraseBkgnd, and didn't fill the memDC's
// selected bitmap with colour, then all sorts of vis problems would occur
void CGridCtrl::EraseBkgnd(CDC* pDC)
{
CRect VisRect, ClipRect, rect;
CBrush FixedRowColBack(GetDefaultCell(TRUE, TRUE)->GetBackClr()),
FixedRowBack(GetDefaultCell(TRUE, FALSE)->GetBackClr()),
FixedColBack(GetDefaultCell(FALSE, TRUE)->GetBackClr()),
TextBack(GetDefaultCell(FALSE, FALSE)->GetBackClr());
CBrush Back(GetGridBkColor());
//CBrush Back(GetTextBkColor());
if (pDC->GetClipBox(ClipRect) == ERROR)
return;
GetVisibleNonFixedCellRange(VisRect);
int nFixedColumnWidth = GetFixedColumnWidth();
int nFixedRowHeight = GetFixedRowHeight();
// Draw Fixed row/column background
if (ClipRect.left < nFixedColumnWidth && ClipRect.top < nFixedRowHeight)
pDC->FillRect(CRect(ClipRect.left, ClipRect.top,
nFixedColumnWidth, nFixedRowHeight),
&FixedRowColBack);
// Draw Fixed columns background
if (ClipRect.left < nFixedColumnWidth && ClipRect.top < VisRect.bottom)
pDC->FillRect(CRect(ClipRect.left, ClipRect.top,
nFixedColumnWidth, VisRect.bottom),
&FixedColBack);
// Draw Fixed rows background
if (ClipRect.top < nFixedRowHeight &&
ClipRect.right > nFixedColumnWidth && ClipRect.left < VisRect.right)
pDC->FillRect(CRect(nFixedColumnWidth-1, ClipRect.top,
VisRect.right, nFixedRowHeight),
&FixedRowBack);
// Draw non-fixed cell background
if (rect.IntersectRect(VisRect, ClipRect))
{
CRect CellRect(max(nFixedColumnWidth, rect.left),
max(nFixedRowHeight, rect.top),
rect.right, rect.bottom);
pDC->FillRect(CellRect, &TextBack);
}
// Draw right hand side of window outside grid
if (VisRect.right < ClipRect.right)
pDC->FillRect(CRect(VisRect.right, ClipRect.top,
ClipRect.right, ClipRect.bottom),
&Back);
// Draw bottom of window below grid
if (VisRect.bottom < ClipRect.bottom && ClipRect.left < VisRect.right)
pDC->FillRect(CRect(ClipRect.left, VisRect.bottom,
VisRect.right, ClipRect.bottom),
&Back);
}
void CGridCtrl::OnSize(UINT nType, int cx, int cy)
{
static BOOL bAlreadyInsideThisProcedure = FALSE;
if (bAlreadyInsideThisProcedure)
return;
if (!::IsWindow(m_hWnd))
return;
// This hurts - but I need a place for initialisation for the drop target,
// and the window must be created. "Create" is a good place - if one is
// creating the window dynamically. If one is using a dialog template then
// this is no good. Oh well...
# ifndef GRIDCONTROL_NO_DRAGDROP
m_DropTarget.Register(this);
# endif
// Start re-entry blocking
bAlreadyInsideThisProcedure = TRUE;
EndEditing(); // destroy any InPlaceEdit's
CWnd::OnSize(nType, cx, cy);
if (m_bAutoFit)
ExpandColsNice(FALSE);
else
ResetScrollBars();
// End re-entry blocking
bAlreadyInsideThisProcedure = FALSE;
}
UINT CGridCtrl::OnGetDlgCode()
{
UINT nCode = DLGC_WANTARROWS | DLGC_WANTCHARS; // DLGC_WANTALLKEYS; //
if (m_bHandleTabKey && !IsCTRLpressed())
nCode |= DLGC_WANTTAB;
return nCode;
}
#ifndef _WIN32_WCE
// If system colours change, then redo colours
void CGridCtrl::OnSysColorChange()
{
CWnd::OnSysColorChange();
if (GetDefaultCell(FALSE, FALSE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(FALSE, FALSE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(FALSE, FALSE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(FALSE, FALSE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetDefaultCell(TRUE, FALSE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(TRUE, FALSE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(TRUE, FALSE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(TRUE, FALSE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetDefaultCell(FALSE, TRUE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(FALSE, TRUE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(FALSE, TRUE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(FALSE, TRUE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetDefaultCell(TRUE, TRUE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(TRUE, TRUE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(TRUE, TRUE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(TRUE, TRUE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetGridBkColor() == m_crShadow)
SetGridBkColor(::GetSysColor(COLOR_3DSHADOW));
m_crWindowText = ::GetSysColor(COLOR_WINDOWTEXT);
m_crWindowColour = ::GetSysColor(COLOR_WINDOW);
m_cr3DFace = ::GetSysColor(COLOR_3DFACE);
m_crShadow = ::GetSysColor(COLOR_3DSHADOW);
}
#endif
#ifndef _WIN32_WCE_NO_CURSOR
// If we are drag-selecting cells, or drag and dropping, stop now
void CGridCtrl::OnCaptureChanged(CWnd *pWnd)
{
if (pWnd->GetSafeHwnd() == GetSafeHwnd())
return;
// kill timer if active
if (m_nTimerID != 0)
{
KillTimer(m_nTimerID);
m_nTimerID = 0;
}
#ifndef GRIDCONTROL_NO_DRAGDROP
// Kill drag and drop if active
if (m_MouseMode == MOUSE_DRAGGING)
m_MouseMode = MOUSE_NOTHING;
#endif
}
#endif
#if (_MFC_VER >= 0x0421) || (_WIN32_WCE >= 210)
// If system settings change, then redo colours
void CGridCtrl::OnSettingChange(UINT uFlags, LPCTSTR lpszSection)
{
CWnd::OnSettingChange(uFlags, lpszSection);
if (GetDefaultCell(FALSE, FALSE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(FALSE, FALSE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(FALSE, FALSE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(FALSE, FALSE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetDefaultCell(TRUE, FALSE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(TRUE, FALSE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(TRUE, FALSE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(TRUE, FALSE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetDefaultCell(FALSE, TRUE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(FALSE, TRUE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(FALSE, TRUE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(FALSE, TRUE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetDefaultCell(TRUE, TRUE)->GetTextClr() == m_crWindowText) // Still using system colours
GetDefaultCell(TRUE, TRUE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT)); // set to new system colour
if (GetDefaultCell(TRUE, TRUE)->GetBackClr() == m_crWindowColour)
GetDefaultCell(TRUE, TRUE)->SetBackClr(::GetSysColor(COLOR_WINDOW));
if (GetGridBkColor() == m_crShadow)
SetGridBkColor(::GetSysColor(COLOR_3DSHADOW));
m_crWindowText = ::GetSysColor(COLOR_WINDOWTEXT);
m_crWindowColour = ::GetSysColor(COLOR_WINDOW);
m_cr3DFace = ::GetSysColor(COLOR_3DFACE);
m_crShadow = ::GetSysColor(COLOR_3DSHADOW);
m_nRowsPerWheelNotch = GetMouseScrollLines(); // Get the number of lines
}
#endif
// For drag-selection. Scrolls hidden cells into view
// TODO: decrease timer interval over time to speed up selection over time
void CGridCtrl::OnTimer(UINT nIDEvent)
{
ASSERT(nIDEvent == WM_LBUTTONDOWN);
if (nIDEvent != WM_LBUTTONDOWN)
return;
CPoint pt, origPt;
#ifdef _WIN32_WCE
if (m_MouseMode == MOUSE_NOTHING)
return;
origPt = GetMessagePos();
#else
if (!GetCursorPos(&origPt))
return;
#endif
ScreenToClient(&origPt);
CRect rect;
GetClientRect(rect);
int nFixedRowHeight = GetFixedRowHeight();
int nFixedColWidth = GetFixedColumnWidth();
pt = origPt;
if (pt.y > rect.bottom)
{
//SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);
SendMessage(WM_KEYDOWN, VK_DOWN, 0);
if (pt.x < rect.left)
pt.x = rect.left;
if (pt.x > rect.right)
pt.x = rect.right;
pt.y = rect.bottom;
OnSelecting(GetCellFromPt(pt));
}
else if (pt.y < nFixedRowHeight)
{
//SendMessage(WM_VSCROLL, SB_LINEUP, 0);
SendMessage(WM_KEYDOWN, VK_UP, 0);
if (pt.x < rect.left)
pt.x = rect.left;
if (pt.x > rect.right)
pt.x = rect.right;
pt.y = nFixedRowHeight + 1;
OnSelecting(GetCellFromPt(pt));
}
pt = origPt;
if (pt.x > rect.right)
{
// SendMessage(WM_HSCROLL, SB_LINERIGHT, 0);
SendMessage(WM_KEYDOWN, VK_RIGHT, 0);
if (pt.y < rect.top)
pt.y = rect.top;
if (pt.y > rect.bottom)
pt.y = rect.bottom;
pt.x = rect.right;
OnSelecting(GetCellFromPt(pt));
}
else if (pt.x < nFixedColWidth)
{
//SendMessage(WM_HSCROLL, SB_LINELEFT, 0);
SendMessage(WM_KEYDOWN, VK_LEFT, 0);
if (pt.y < rect.top)
pt.y = rect.top;
if (pt.y > rect.bottom)
pt.y = rect.bottom;
pt.x = nFixedColWidth + 1;
OnSelecting(GetCellFromPt(pt));
}
}
// move about with keyboard
void CGridCtrl::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
if (!IsValid(m_idCurrentCell))
{
CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
return;
}
CCellID next = m_idCurrentCell;
BOOL bChangeLine = FALSE;
BOOL bHorzScrollAction = FALSE;
BOOL bVertScrollAction = FALSE;
if (IsCTRLpressed())
{
switch (nChar)
{
case 'A':
OnEditSelectAll();
break;
#ifndef GRIDCONTROL_NO_CLIPBOARD
case 'X':
OnEditCut();
break;
case VK_INSERT:
case 'C':
OnEditCopy();
break;
case 'V':
OnEditPaste();
break;
#endif
}
}
#ifndef GRIDCONTROL_NO_CLIPBOARD
if (IsSHIFTpressed() &&(nChar == VK_INSERT))
OnEditPaste();
#endif
BOOL bFoundVisible;
int iOrig;
if (nChar == VK_DELETE)
{
#if _MSC_VER >= 1300
ValidateAndModifyCellContents(m_idCurrentCell.row, m_idCurrentCell.col, L"");
#else
ValidateAndModifyCellContents(m_idCurrentCell.row, m_idCurrentCell.col, _T(""));
#endif
}
else if (nChar == VK_DOWN)
{
// don't let user go to a hidden row
bFoundVisible = FALSE;
iOrig = next.row;
next.row++;
while( next.row < GetRowCount())
{
if( GetRowHeight( next.row) > 0)
{
bFoundVisible = TRUE;
break;
}
next.row++;
}
if( !bFoundVisible)
next.row = iOrig;
}
else if (nChar == VK_UP)
{
// don't let user go to a hidden row
bFoundVisible = FALSE;
iOrig = next.row;
next.row--;
while( next.row >= m_nFixedRows)
{
if( GetRowHeight( next.row) > 0)
{
bFoundVisible = TRUE;