#pragma hdrstop
#endif
+#if wxUSE_HEADERCTRL
+
#ifndef WX_PRECOMP
#include "wx/log.h"
#endif // WX_PRECOMP
void wxHeaderCtrl::Init()
{
+ m_numColumns = 0;
m_imageList = NULL;
m_scrollOffset = 0;
}
{
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
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) )
}
}
+ // 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++ )
{
- DoInsertItem(n, -1 /* default order, i.e. append */);
+ const wxHeaderColumn& col = GetColumn(n);
+ if ( col.IsShown() )
+ {
+ m_isHidden[n] = false;
+
+ DoInsertItem(col, n);
+ }
+ else // hidden initially
+ {
+ m_isHidden[n] = true;
+ }
}
}
// more complicated as we'd have to reset the old values as well as setting
// the new ones -- so instead just recreate the column
- // we need to preserve the old position ourselves as the column doesn't
- // store it (TODO: should it?)
- const unsigned int pos = GetColumnPos(idx);
- Header_DeleteItem(GetHwnd(), idx);
- DoInsertItem(idx, pos);
+ 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::DoInsertItem(unsigned int idx, int order)
+void wxHeaderCtrl::DoInsertItem(const wxHeaderColumn& col, unsigned int idx)
{
- const wxHeaderColumn& col = GetColumn(idx);
+ wxASSERT_MSG( !col.IsHidden(), "should only be called for shown columns" );
wxHDITEM hdi;
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();
}
- if ( order != -1 )
- {
- hdi.mask |= HDI_ORDER;
- hdi.iOrder = order;
- }
+ hdi.mask |= HDI_ORDER;
+ hdi.iOrder = MSWToNativeOrder(m_colIndices.Index(idx));
- if ( ::SendMessage(GetHwnd(), HDM_INSERTITEM, idx, (LPARAM)&hdi) == -1 )
+ if ( ::SendMessage(GetHwnd(), HDM_INSERTITEM,
+ MSWToNativeIdx(idx), (LPARAM)&hdi) == -1 )
{
wxLogLastError(_T("Header_InsertItem()"));
}
void wxHeaderCtrl::DoSetColumnsOrder(const wxArrayInt& order)
{
- if ( !Header_SetOrderArray(GetHwnd(), order.size(), &order[0]) )
+ 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(_T("Header_GetOrderArray"));
}
+
+ m_colIndices = order;
}
wxArrayInt wxHeaderCtrl::DoGetColumnsOrder() const
{
- const unsigned count = GetColumnCount();
- wxArrayInt order(count);
- if ( !Header_GetOrderArray(GetHwnd(), count, &order[0]) )
+ // 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++ )
{
- wxLogLastError(_T("Header_GetOrderArray"));
+ 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++;
+ }
+
+ 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 ( GetColumn(m_colIndices[n]).IsHidden() )
+ order--;
}
+ 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 ( n > pos )
+ break;
+
+ if ( GetColumn(m_colIndices[n]).IsHidden() )
+ pos++;
+ }
+
+ wxASSERT_MSG( MSWToNativeOrder(pos) == order, "logic error" );
+
+ return pos;
+}
+
// ----------------------------------------------------------------------------
// wxHeaderCtrl events
// ----------------------------------------------------------------------------
NMHEADER * const nmhdr = (NMHEADER *)lParam;
wxEventType evtType = wxEVT_NULL;
- int idx = nmhdr->iItem;
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
POINT pt;
idx = wxMSWGetColumnClicked(&nmhdr->hdr, &pt);
if ( idx != wxNOT_FOUND )
+ {
+ idx = MSWFromNativeIdx(idx);
evtType = GetClickEventType(code == NM_RDBLCLK, 1);
+ }
//else: ignore clicks outside any column
}
break;
case HDN_BEGINDRAG:
// Windows sometimes sends us events with invalid column indices
- if ( idx == -1 )
+ if ( nmhdr->iItem == -1 )
break;
// column must have the appropriate flag to be draggable
break;
case HDN_ENDDRAG:
- evtType = wxEVT_COMMAND_HEADER_END_REORDER;
-
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_COMMAND_HEADER_END_REORDER;
break;
case NM_RELEASEDCAPTURE:
if ( GetEventHandler()->ProcessEvent(event) )
{
if ( event.IsAllowed() )
- return true;
+ return true; // skip default message handling below
// we need to veto the default handling of this message, don't
// return to execute the code in the "if veto" branch below
veto = true;
}
+ else // not processed
+ {
+ // 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_COMMAND_HEADER_END_REORDER )
+ MoveColumnInOrderArray(m_colIndices, idx, order);
+ }
}
if ( veto )
}
#endif // wxHAS_GENERIC_HEADERCTRL
+
+#endif // wxUSE_HEADERCTRL
projects / wxWidgets.git / blobdiff