// Purpose: implementation of wxHeaderCtrl for wxMSW
// Author: Vadim Zeitlin
// Created: 2008-12-01
-// RCS-ID: $Id$
// Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#pragma hdrstop
#endif
+#if wxUSE_HEADERCTRL
+
#ifndef WX_PRECOMP
+ #include "wx/app.h"
#include "wx/log.h"
#endif // WX_PRECOMP
#include "wx/headerctrl.h"
+
+#ifndef wxHAS_GENERIC_HEADERCTRL
+
#include "wx/imaglist.h"
#include "wx/msw/wrapcctl.h"
#include "wx/msw/private.h"
+#ifndef HDM_SETBITMAPMARGIN
+ #define HDM_SETBITMAPMARGIN 0x1234
+#endif
+
+#ifndef Header_SetBitmapMargin
+ #define Header_SetBitmapMargin(hwnd, margin) \
+ ::SendMessage((hwnd), HDM_SETBITMAPMARGIN, (WPARAM)(margin), 0)
+#endif
+
// from src/msw/listctrl.cpp
extern int WXDLLIMPEXP_CORE wxMSWGetColumnClicked(NMHDR *nmhdr, POINT *ptClick);
void wxHeaderCtrl::Init()
{
+ m_numColumns = 0;
m_imageList = NULL;
+ m_scrollOffset = 0;
+ m_colBeingDragged = -1;
}
bool wxHeaderCtrl::Create(wxWindow *parent,
if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
return false;
- if ( !MSWCreateControl(WC_HEADER, _T(""), pos, size) )
+ if ( !MSWCreateControl(WC_HEADER, wxT(""), pos, size) )
return false;
+ // special hack for margins when using comctl32.dll v6 or later: the
+ // default margin is too big and results in label truncation when the
+ // column width is just about right to show it together with the sort
+ // indicator, so reduce it to a smaller value (in principle we could even
+ // use 0 here but this starts to look ugly)
+ if ( wxApp::GetComCtl32Version() >= 600 )
+ {
+ Header_SetBitmapMargin(GetHwnd(), ::GetSystemMetrics(SM_CXEDGE));
+ }
+
return true;
}
{
WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
- if ( style & wxHD_DRAGDROP )
+ if ( style & wxHD_ALLOW_REORDER )
msStyle |= HDS_DRAGDROP;
// the control looks nicer with these styles and there doesn't seem to be
// any reason to not use them so we always do (as for HDS_HORZ it is 0
// anyhow but include it for clarity)
- msStyle |= HDS_HORZ | HDS_BUTTONS | HDS_FLAT | HDS_FULLDRAG | HDS_HOTTRACK;
+ // NOTE: don't use however HDS_FLAT because it makes the control look
+ // non-native when running WinXP in classic mode
+ msStyle |= HDS_HORZ | HDS_BUTTONS | HDS_FULLDRAG | HDS_HOTTRACK;
return msStyle;
}
// wxHeaderCtrl scrolling
// ----------------------------------------------------------------------------
+void wxHeaderCtrl::DoSetSize(int x, int y,
+ int w, int h,
+ int sizeFlags)
+{
+ wxHeaderCtrlBase::DoSetSize(x + m_scrollOffset, y, w - m_scrollOffset, h,
+ sizeFlags);
+}
+
void wxHeaderCtrl::DoScrollHorz(int dx)
{
// as the native control doesn't support offsetting its contents, we use a
// itself: to be precise, offset it by the scroll increment to the left and
// increment its width to still extend to the right boundary to compensate
// for it (notice that dx is negative when scrolling to the right)
- SetSize(GetPosition().x + dx, -1, GetSize().x - dx, -1, wxSIZE_USE_EXISTING);
+ m_scrollOffset += dx;
+
+ wxHeaderCtrlBase::DoSetSize(GetPosition().x + dx, -1,
+ GetSize().x - dx, -1,
+ wxSIZE_USE_EXISTING);
}
// ----------------------------------------------------------------------------
HDLAYOUT layout = { &rc, &wpos };
if ( !Header_Layout(GetHwnd(), &layout) )
{
- wxLogLastError(_T("Header_Layout"));
+ wxLogLastError(wxT("Header_Layout"));
return wxControl::DoGetBestSize();
}
unsigned int wxHeaderCtrl::DoGetCount() const
{
- return Header_GetItemCount(GetHwnd());
+ // we can't use Header_GetItemCount() here because it doesn't take the
+ // hidden columns into account and we can't find the hidden columns after
+ // the last shown one in MSWFromNativeIdx() without knowing where to stop
+ // so we have to store the columns count internally
+ return m_numColumns;
+}
+
+int wxHeaderCtrl::GetShownColumnsCount() const
+{
+ const int numItems = Header_GetItemCount(GetHwnd());
+
+ wxASSERT_MSG( numItems >= 0 && (unsigned)numItems <= m_numColumns,
+ "unexpected number of items in the native control" );
+
+ return numItems;
}
void wxHeaderCtrl::DoSetCount(unsigned int count)
unsigned n;
// first delete all old columns
- const unsigned countOld = DoGetCount();
+ const unsigned countOld = GetShownColumnsCount();
for ( n = 0; n < countOld; n++ )
{
if ( !Header_DeleteItem(GetHwnd(), 0) )
{
- wxLogLastError(_T("Header_DeleteItem"));
+ wxLogLastError(wxT("Header_DeleteItem"));
}
}
+ // update the column indices order array before changing m_numColumns
+ DoResizeColumnIndices(m_colIndices, count);
+
// and add the new ones
+ m_numColumns = count;
+ m_isHidden.resize(m_numColumns);
for ( n = 0; n < count; n++ )
{
- DoSetOrInsertItem(Insert, n);
+ const wxHeaderColumn& col = GetColumn(n);
+ if ( col.IsShown() )
+ {
+ m_isHidden[n] = false;
+
+ DoInsertItem(col, n);
+ }
+ else // hidden initially
+ {
+ m_isHidden[n] = true;
+ }
}
}
void wxHeaderCtrl::DoUpdate(unsigned int idx)
{
- DoSetOrInsertItem(Set, idx);
+ // the native control does provide Header_SetItem() but it's inconvenient
+ // to use it because it sends HDN_ITEMCHANGING messages and we'd have to
+ // arrange not to block setting the width from there and the logic would be
+ // more complicated as we'd have to reset the old values as well as setting
+ // the new ones -- so instead just recreate the column
+
+ const wxHeaderColumn& col = GetColumn(idx);
+ if ( col.IsHidden() )
+ {
+ // column is hidden now
+ if ( !m_isHidden[idx] )
+ {
+ // but it wasn't hidden before, so remove it
+ Header_DeleteItem(GetHwnd(), MSWToNativeIdx(idx));
+
+ m_isHidden[idx] = true;
+ }
+ //else: nothing to do, updating hidden column doesn't have any effect
+ }
+ else // column is shown now
+ {
+ if ( m_isHidden[idx] )
+ {
+ m_isHidden[idx] = false;
+ }
+ else // and it was shown before as well
+ {
+ // we need to remove the old column
+ Header_DeleteItem(GetHwnd(), MSWToNativeIdx(idx));
+ }
+
+ DoInsertItem(col, idx);
+ }
}
-void wxHeaderCtrl::DoSetOrInsertItem(Operation oper, unsigned int idx)
+void wxHeaderCtrl::DoInsertItem(const wxHeaderColumn& col, unsigned int idx)
{
- const wxHeaderColumnBase& col = GetColumn(idx);
+ wxASSERT_MSG( !col.IsHidden(), "should only be called for shown columns" );
wxHDITEM hdi;
// notice that we need to store the string we use the pointer to until we
// pass it to the control
- wxWxCharBuffer buf;
- if ( !col.GetTitle().empty() )
- {
- hdi.mask |= HDI_TEXT;
-
- buf = col.GetTitle().wx_str();
- hdi.pszText = buf.data();
- hdi.cchTextMax = wxStrlen(buf);
- }
+ hdi.mask |= HDI_TEXT;
+ wxWxCharBuffer buf = col.GetTitle().t_str();
+ hdi.pszText = buf.data();
+ hdi.cchTextMax = wxStrlen(buf);
const wxBitmap bmp = col.GetBitmap();
if ( bmp.IsOk() )
{
- const int bmpWidth = bmp.GetWidth(),
- bmpHeight = bmp.GetHeight();
+ hdi.mask |= HDI_IMAGE;
- if ( !m_imageList )
+ if ( bmp.IsOk() )
{
- m_imageList = new wxImageList(bmpWidth, bmpHeight);
- Header_SetImageList(GetHwnd(), GetHimagelistOf(m_imageList));
+ const int bmpWidth = bmp.GetWidth(),
+ bmpHeight = bmp.GetHeight();
+
+ if ( !m_imageList )
+ {
+ m_imageList = new wxImageList(bmpWidth, bmpHeight);
+ (void) // suppress mingw32 warning about unused computed value
+ Header_SetImageList(GetHwnd(), GetHimagelistOf(m_imageList));
+ }
+ else // already have an image list
+ {
+ // check that all bitmaps we use have the same size
+ int imageWidth,
+ imageHeight;
+ m_imageList->GetSize(0, imageWidth, imageHeight);
+
+ wxASSERT_MSG( imageWidth == bmpWidth && imageHeight == bmpHeight,
+ "all column bitmaps must have the same size" );
+ }
+
+ m_imageList->Add(bmp);
+ hdi.iImage = m_imageList->GetImageCount() - 1;
}
- else // already have an image list
+ else // no bitmap but we still need to update the item
{
- // check that all bitmaps we use have the same size
- int imageWidth,
- imageHeight;
- m_imageList->GetSize(0, imageWidth, imageHeight);
-
- wxASSERT_MSG( imageWidth == bmpWidth && imageHeight == bmpHeight,
- "all column bitmaps must have the same size" );
+ hdi.iImage = I_IMAGENONE;
}
-
- m_imageList->Add(bmp);
- hdi.mask |= HDI_IMAGE;
- hdi.iImage = m_imageList->GetImageCount() - 1;
}
if ( col.GetAlignment() != wxALIGN_NOT )
{
- hdi.mask |= HDI_FORMAT;
+ hdi.mask |= HDI_FORMAT | HDF_LEFT;
switch ( col.GetAlignment() )
{
case wxALIGN_LEFT:
hdi.fmt |= col.IsSortOrderAscending() ? HDF_SORTUP : HDF_SORTDOWN;
}
- if ( col.GetWidth() != wxCOL_WIDTH_DEFAULT || col.IsHidden() )
+ if ( col.GetWidth() != wxCOL_WIDTH_DEFAULT )
{
hdi.mask |= HDI_WIDTH;
- hdi.cxy = col.IsHidden() ? 0 : col.GetWidth();
+ hdi.cxy = col.GetWidth();
+ }
+
+ hdi.mask |= HDI_ORDER;
+ hdi.iOrder = MSWToNativeOrder(m_colIndices.Index(idx));
+
+ if ( ::SendMessage(GetHwnd(), HDM_INSERTITEM,
+ MSWToNativeIdx(idx), (LPARAM)&hdi) == -1 )
+ {
+ wxLogLastError(wxT("Header_InsertItem()"));
+ }
+}
+
+void wxHeaderCtrl::DoSetColumnsOrder(const wxArrayInt& order)
+{
+ wxArrayInt orderShown;
+ orderShown.reserve(m_numColumns);
+
+ for ( unsigned n = 0; n < m_numColumns; n++ )
+ {
+ const int idx = order[n];
+ if ( GetColumn(idx).IsShown() )
+ orderShown.push_back(MSWToNativeIdx(idx));
+ }
+
+ if ( !Header_SetOrderArray(GetHwnd(), orderShown.size(), &orderShown[0]) )
+ {
+ wxLogLastError(wxT("Header_GetOrderArray"));
+ }
+
+ m_colIndices = order;
+}
+
+wxArrayInt wxHeaderCtrl::DoGetColumnsOrder() const
+{
+ // we don't use Header_GetOrderArray() here because it doesn't return
+ // information about the hidden columns, instead we just save the columns
+ // order array in DoSetColumnsOrder() and update it when they're reordered
+ return m_colIndices;
+}
+
+// ----------------------------------------------------------------------------
+// wxHeaderCtrl indexes and positions translation
+// ----------------------------------------------------------------------------
+
+int wxHeaderCtrl::MSWToNativeIdx(int idx)
+{
+ // don't check for GetColumn(idx).IsShown() as it could have just became
+ // false and we may be called from DoUpdate() to delete the old column
+ wxASSERT_MSG( !m_isHidden[idx],
+ "column must be visible to have an "
+ "index in the native control" );
+
+ int item = idx;
+ for ( int i = 0; i < idx; i++ )
+ {
+ if ( GetColumn(i).IsHidden() )
+ item--; // one less column the native control knows about
+ }
+
+ wxASSERT_MSG( item >= 0 && item <= GetShownColumnsCount(), "logic error" );
+
+ return item;
+}
+
+int wxHeaderCtrl::MSWFromNativeIdx(int item)
+{
+ wxASSERT_MSG( item >= 0 && item < GetShownColumnsCount(),
+ "column index out of range" );
+
+ // reverse the above function
+
+ unsigned idx = item;
+ for ( unsigned n = 0; n < m_numColumns; n++ )
+ {
+ if ( n > idx )
+ break;
+
+ if ( GetColumn(n).IsHidden() )
+ idx++;
}
- const LRESULT rc = ::SendMessage(GetHwnd(),
- oper == Set ? HDM_SETITEM : HDM_INSERTITEM,
- idx,
- (LPARAM)&hdi);
- if ( oper == Set )
+ wxASSERT_MSG( MSWToNativeIdx(idx) == item, "logic error" );
+
+ return idx;
+}
+
+int wxHeaderCtrl::MSWToNativeOrder(int pos)
+{
+ wxASSERT_MSG( pos >= 0 && static_cast<unsigned>(pos) < m_numColumns,
+ "column position out of range" );
+
+ int order = pos;
+ for ( int n = 0; n < pos; n++ )
{
- if ( !rc )
- wxLogLastError(_T("Header_SetItem()"));
+ if ( GetColumn(m_colIndices[n]).IsHidden() )
+ order--;
}
- else // Insert
+
+ wxASSERT_MSG( order >= 0 && order <= GetShownColumnsCount(), "logic error" );
+
+ return order;
+}
+
+int wxHeaderCtrl::MSWFromNativeOrder(int order)
+{
+ wxASSERT_MSG( order >= 0 && order < GetShownColumnsCount(),
+ "native column position out of range" );
+
+ unsigned pos = order;
+ for ( unsigned n = 0; n < m_numColumns; n++ )
{
- if ( rc == -1 )
- wxLogLastError(_T("Header_InsertItem()"));
+ if ( n > pos )
+ break;
+
+ if ( GetColumn(m_colIndices[n]).IsHidden() )
+ pos++;
}
+
+ wxASSERT_MSG( MSWToNativeOrder(pos) == order, "logic error" );
+
+ return pos;
}
// ----------------------------------------------------------------------------
// wxHeaderCtrl events
// ----------------------------------------------------------------------------
-bool wxHeaderCtrl::SendClickEvent(bool dblclk, unsigned int idx, int button)
+wxEventType wxHeaderCtrl::GetClickEventType(bool dblclk, int button)
{
wxEventType evtType;
switch ( button )
{
case 0:
- evtType = dblclk ? wxEVT_COMMAND_HEADER_DCLICK
- : wxEVT_COMMAND_HEADER_CLICK;
+ evtType = dblclk ? wxEVT_HEADER_DCLICK
+ : wxEVT_HEADER_CLICK;
break;
case 1:
- evtType = dblclk ? wxEVT_COMMAND_HEADER_RIGHT_DCLICK
- : wxEVT_COMMAND_HEADER_RIGHT_CLICK;
+ evtType = dblclk ? wxEVT_HEADER_RIGHT_DCLICK
+ : wxEVT_HEADER_RIGHT_CLICK;
break;
case 2:
- evtType = dblclk ? wxEVT_COMMAND_HEADER_MIDDLE_DCLICK
- : wxEVT_COMMAND_HEADER_MIDDLE_CLICK;
+ evtType = dblclk ? wxEVT_HEADER_MIDDLE_DCLICK
+ : wxEVT_HEADER_MIDDLE_CLICK;
break;
default:
wxFAIL_MSG( wxS("unexpected event type") );
- return false;
+ evtType = wxEVT_NULL;
}
- wxHeaderCtrlEvent event(evtType, GetId());
- event.SetEventObject(this);
- event.SetColumn(idx);
-
- return GetEventHandler()->ProcessEvent(event);
+ return evtType;
}
bool wxHeaderCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
{
NMHEADER * const nmhdr = (NMHEADER *)lParam;
- switch ( nmhdr->hdr.code )
+ wxEventType evtType = wxEVT_NULL;
+ int width = 0;
+ int order = -1;
+ bool veto = false;
+ const UINT code = nmhdr->hdr.code;
+
+ // we don't have the index for all events, e.g. not for NM_RELEASEDCAPTURE
+ // so only access for header control events (and yes, the direction of
+ // comparisons with FIRST/LAST is correct even if it seems inverted)
+ int idx = code <= HDN_FIRST && code > HDN_LAST ? nmhdr->iItem : -1;
+ if ( idx != -1 )
{
+ // we also get bogus HDN_BEGINDRAG with -1 index so don't call
+ // MSWFromNativeIdx() unconditionally for nmhdr->iItem
+ idx = MSWFromNativeIdx(idx);
+ }
+
+ switch ( code )
+ {
+ // click events
+ // ------------
+
case HDN_ITEMCLICK:
case HDN_ITEMDBLCLICK:
- if ( SendClickEvent(nmhdr->hdr.code == HDN_ITEMDBLCLICK,
- nmhdr->iItem,
- nmhdr->iButton) )
- return true;
+ evtType = GetClickEventType(code == HDN_ITEMDBLCLICK, nmhdr->iButton);
+
+ // We're not dragging any more.
+ m_colBeingDragged = -1;
break;
// although we should get the notifications about the right clicks
case NM_RDBLCLK:
{
POINT pt;
- const int col = wxMSWGetColumnClicked(&nmhdr->hdr, &pt);
- if ( col != wxNOT_FOUND )
+ idx = wxMSWGetColumnClicked(&nmhdr->hdr, &pt);
+ if ( idx != wxNOT_FOUND )
{
- if ( SendClickEvent(nmhdr->hdr.code == NM_RDBLCLK, col, 1) )
- return true;
+ idx = MSWFromNativeIdx(idx);
+
+ // due to a bug in mingw32 headers NM_RDBLCLK is signed
+ // there so we need a cast to avoid warnings about signed/
+ // unsigned comparison
+ evtType = GetClickEventType(
+ code == static_cast<UINT>(NM_RDBLCLK), 1);
}
//else: ignore clicks outside any column
}
break;
+
+ case HDN_DIVIDERDBLCLICK:
+ evtType = wxEVT_HEADER_SEPARATOR_DCLICK;
+ break;
+
+
+ // column resizing events
+ // ----------------------
+
+ // see comments in wxListCtrl::MSWOnNotify() for why we catch both
+ // ASCII and Unicode versions of this message
+ case HDN_BEGINTRACKA:
+ case HDN_BEGINTRACKW:
+ // non-resizable columns can't be resized no matter what, don't
+ // even generate any events for them
+ if ( !GetColumn(idx).IsResizeable() )
+ {
+ veto = true;
+ break;
+ }
+
+ evtType = wxEVT_HEADER_BEGIN_RESIZE;
+ // fall through
+
+ case HDN_ENDTRACKA:
+ case HDN_ENDTRACKW:
+ width = nmhdr->pitem->cxy;
+
+ if ( evtType == wxEVT_NULL )
+ {
+ evtType = wxEVT_HEADER_END_RESIZE;
+
+ // don't generate events with invalid width
+ const int minWidth = GetColumn(idx).GetMinWidth();
+ if ( width < minWidth )
+ width = minWidth;
+ }
+ break;
+
+ // The control is not supposed to send HDN_TRACK when using
+ // HDS_FULLDRAG (which we do use) but apparently some versions of
+ // comctl32.dll still do it, see #13506, so catch both messages
+ // just in case we are dealing with one of these buggy versions.
+ case HDN_TRACK:
+ case HDN_ITEMCHANGING:
+ if ( nmhdr->pitem && (nmhdr->pitem->mask & HDI_WIDTH) )
+ {
+ // prevent the column from being shrunk beneath its min width
+ width = nmhdr->pitem->cxy;
+ if ( width < GetColumn(idx).GetMinWidth() )
+ {
+ // don't generate any events and prevent the change from
+ // happening
+ veto = true;
+ }
+ else // width is acceptable
+ {
+ // generate the resizing event from here as we don't seem
+ // to be getting HDN_TRACK events at all, at least with
+ // comctl32.dll v6
+ evtType = wxEVT_HEADER_RESIZING;
+ }
+ }
+ break;
+
+
+ // column reordering events
+ // ------------------------
+
+ case HDN_BEGINDRAG:
+ // Windows sometimes sends us events with invalid column indices
+ if ( nmhdr->iItem == -1 )
+ break;
+
+ // If we are dragging a column that is not draggable and the mouse
+ // is moved over a different column then we get the column number from
+ // the column under the mouse. This results in an unexpected behaviour
+ // if this column is draggable. To prevent this remember the column we
+ // are dragging for the complete drag and drop cycle.
+ if ( m_colBeingDragged == -1 )
+ {
+ m_colBeingDragged = idx;
+ }
+
+ // column must have the appropriate flag to be draggable
+ if ( !GetColumn(m_colBeingDragged).IsReorderable() )
+ {
+ veto = true;
+ break;
+ }
+
+ evtType = wxEVT_HEADER_BEGIN_REORDER;
+ break;
+
+ case HDN_ENDDRAG:
+ wxASSERT_MSG( nmhdr->pitem->mask & HDI_ORDER, "should have order" );
+ order = nmhdr->pitem->iOrder;
+
+ // we also get messages with invalid order when column reordering
+ // is cancelled (e.g. by pressing Esc)
+ if ( order == -1 )
+ break;
+
+ order = MSWFromNativeOrder(order);
+
+ evtType = wxEVT_HEADER_END_REORDER;
+
+ // We (successfully) ended dragging the column.
+ m_colBeingDragged = -1;
+ break;
+
+ case NM_RELEASEDCAPTURE:
+ evtType = wxEVT_HEADER_DRAGGING_CANCELLED;
+
+ // Dragging the column was cancelled.
+ m_colBeingDragged = -1;
+ break;
+ }
+
+
+ // do generate the corresponding wx event
+ if ( evtType != wxEVT_NULL )
+ {
+ wxHeaderCtrlEvent event(evtType, GetId());
+ event.SetEventObject(this);
+ event.SetColumn(idx);
+ event.SetWidth(width);
+ if ( order != -1 )
+ event.SetNewOrder(order);
+
+ const bool processed = GetEventHandler()->ProcessEvent(event);
+
+ if ( processed && !event.IsAllowed() )
+ veto = true;
+
+ if ( !veto )
+ {
+ // special post-processing for HDN_ENDDRAG: we need to update the
+ // internal column indices array if this is allowed to go ahead as
+ // the native control is going to reorder its columns now
+ if ( evtType == wxEVT_HEADER_END_REORDER )
+ MoveColumnInOrderArray(m_colIndices, idx, order);
+
+ if ( processed )
+ {
+ // skip default processing below
+ return true;
+ }
+ }
+ }
+
+ if ( veto )
+ {
+ // all of HDN_BEGIN{DRAG,TRACK}, HDN_TRACK and HDN_ITEMCHANGING
+ // interpret TRUE return value as meaning to stop the control
+ // default handling of the message
+ *result = TRUE;
+
+ return true;
}
return wxHeaderCtrlBase::MSWOnNotify(idCtrl, lParam, result);
}
+
+#endif // wxHAS_GENERIC_HEADERCTRL
+
+#endif // wxUSE_HEADERCTRL
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