/////////////////////////////////////////////////////////////////////////////
-// Name: gbsizer.cpp
+// Name: src/common/gbsizer.cpp
// Purpose: wxGridBagSizer: A sizer that can lay out items in a grid,
// with items at specified cells, and with the option of row
// and/or column spanning
//
// Author: Robin Dunn
// Created: 03-Nov-2003
-// RCS-ID: $Id$
// Copyright: (c) Robin Dunn
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "gbsizer.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
wxGBSizerItem::wxGBSizerItem()
: wxSizerItem(),
m_pos(-1,-1),
- m_span(-1,-1),
m_gbsizer(NULL)
{
}
wxGridBagSizer::wxGridBagSizer(int vgap, int hgap )
: wxFlexGridSizer(1, vgap, hgap),
m_emptyCellSize(10,20)
-
+
{
}
-bool wxGridBagSizer::Add( wxWindow *window,
- const wxGBPosition& pos, const wxGBSpan& span,
- int flag, int border, wxObject* userData )
+wxSizerItem* wxGridBagSizer::Add( wxWindow *window,
+ const wxGBPosition& pos, const wxGBSpan& span,
+ int flag, int border, wxObject* userData )
{
wxGBSizerItem* item = new wxGBSizerItem(window, pos, span, flag, border, userData);
if ( Add(item) )
- return true;
+ return item;
else
{
delete item;
- return false;
+ return NULL;
}
}
-bool wxGridBagSizer::Add( wxSizer *sizer,
+wxSizerItem* wxGridBagSizer::Add( wxSizer *sizer,
const wxGBPosition& pos, const wxGBSpan& span,
int flag, int border, wxObject* userData )
{
wxGBSizerItem* item = new wxGBSizerItem(sizer, pos, span, flag, border, userData);
if ( Add(item) )
- return true;
+ return item;
else
{
delete item;
- return false;
+ return NULL;
}
}
-bool wxGridBagSizer::Add( int width, int height,
+wxSizerItem* wxGridBagSizer::Add( int width, int height,
const wxGBPosition& pos, const wxGBSpan& span,
int flag, int border, wxObject* userData )
{
wxGBSizerItem* item = new wxGBSizerItem(width, height, pos, span, flag, border, userData);
if ( Add(item) )
- return true;
+ return item;
else
{
delete item;
- return false;
+ return NULL;
}
}
-bool wxGridBagSizer::Add( wxGBSizerItem *item )
+wxSizerItem* wxGridBagSizer::Add( wxGBSizerItem *item )
{
- wxCHECK_MSG( !CheckForIntersection(item), false,
+ wxCHECK_MSG( !CheckForIntersection(item), NULL,
wxT("An item is already at that position") );
m_children.Append(item);
item->SetGBSizer(this);
if ( item->GetWindow() )
item->GetWindow()->SetContainingSizer( this );
- return true;
+ // extend the number of rows/columns of the underlying wxFlexGridSizer if
+ // necessary
+ int row, col;
+ item->GetEndPos(row, col);
+ row++;
+ col++;
+
+ if ( row > GetRows() )
+ SetRows(row);
+ if ( col > GetCols() )
+ SetCols(col);
+
+ return item;
}
{
wxGBPosition badpos(-1,-1);
wxSizerItemList::compatibility_iterator node = m_children.Item( index );
- wxCHECK_MSG( node, badpos, _T("Failed to find item.") );
- wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
+ wxCHECK_MSG( node, badpos, wxT("Failed to find item.") );
+ wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
return item->GetPos();
}
bool wxGridBagSizer::SetItemPosition(size_t index, const wxGBPosition& pos)
{
wxSizerItemList::compatibility_iterator node = m_children.Item( index );
- wxCHECK_MSG( node, false, _T("Failed to find item.") );
- wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
+ wxCHECK_MSG( node, false, wxT("Failed to find item.") );
+ wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
return item->SetPos(pos);
}
wxGBSpan wxGridBagSizer::GetItemSpan(wxWindow *window)
{
- wxGBSpan badspan(-1,-1);
wxGBSizerItem* item = FindItem(window);
- wxCHECK_MSG( item, badspan, _T("Failed to find item.") );
+ wxCHECK_MSG( item, wxGBSpan::Invalid(), wxT("Failed to find item.") );
return item->GetSpan();
}
wxGBSpan wxGridBagSizer::GetItemSpan(wxSizer *sizer)
{
- wxGBSpan badspan(-1,-1);
wxGBSizerItem* item = FindItem(sizer);
- wxCHECK_MSG( item, badspan, _T("Failed to find item.") );
+ wxCHECK_MSG( item, wxGBSpan::Invalid(), wxT("Failed to find item.") );
return item->GetSpan();
}
wxGBSpan wxGridBagSizer::GetItemSpan(size_t index)
{
- wxGBSpan badspan(-1,-1);
wxSizerItemList::compatibility_iterator node = m_children.Item( index );
- wxCHECK_MSG( node, badspan, _T("Failed to find item.") );
- wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
+ wxCHECK_MSG( node, wxGBSpan::Invalid(), wxT("Failed to find item.") );
+ wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
return item->GetSpan();
}
bool wxGridBagSizer::SetItemSpan(size_t index, const wxGBSpan& span)
{
wxSizerItemList::compatibility_iterator node = m_children.Item( index );
- wxCHECK_MSG( node, false, _T("Failed to find item.") );
- wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
+ wxCHECK_MSG( node, false, wxT("Failed to find item.") );
+ wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
return item->SetSpan(span);
}
+wxGBSizerItem* wxGridBagSizer::FindItemAtPoint(const wxPoint& pt)
+{
+ wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
+ while (node)
+ {
+ wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
+ wxRect rect(item->GetPosition(), item->GetSize());
+ rect.Inflate(m_hgap, m_vgap);
+ if ( rect.Contains(pt) )
+ return item;
+ node = node->GetNext();
+ }
+ return NULL;
+}
+
+
+
+
wxGBSizerItem* wxGridBagSizer::FindItemWithData(const wxObject* userData)
{
wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
wxSize wxGridBagSizer::CalcMin()
{
int idx;
-
+
if (m_children.GetCount() == 0)
return m_emptyCellSize;
if ( item->IsShown() )
{
int row, col, endrow, endcol;
-
+
item->GetPos(row, col);
item->GetEndPos(endrow, endcol);
- // fill heights and widths upto this item if needed
- while ( m_rowHeights.GetCount() <= (size_t)endrow )
+ // fill heights and widths up to this item if needed
+ while ( (int)m_rowHeights.GetCount() <= endrow )
m_rowHeights.Add(m_emptyCellSize.GetHeight());
- while ( m_colWidths.GetCount() <= (size_t)endcol )
+ while ( (int)m_colWidths.GetCount() <= endcol )
m_colWidths.Add(m_emptyCellSize.GetWidth());
// See if this item increases the size of its row(s) or col(s)
node = node->GetNext();
}
+ AdjustForOverflow();
AdjustForFlexDirection();
// Now traverse the heights and widths arrays calcing the totals, including gaps
for (idx=0; idx < m_rows; idx++)
height += m_rowHeights[idx] + ( idx == m_rows-1 ? 0 : m_vgap );
- return wxSize(width, height);
+ m_calculatedMinSize = wxSize(width, height);
+ return m_calculatedMinSize;
}
void wxGridBagSizer::RecalcSizes()
{
- if (m_children.GetCount() == 0)
+ // We can't lay out our elements if we don't have at least a single row and
+ // a single column. Notice that this may happen even if we have some
+ // children but all of them are hidden, so checking for m_children being
+ // non-empty is not enough, see #15475.
+ if ( m_rowHeights.empty() || m_colWidths.empty() )
return;
- // Calculates minsize and populates m_rowHeights and m_colWidths
- wxSize minsz( CalcMin() );
-
wxPoint pt( GetPosition() );
wxSize sz( GetSize() );
-
+
m_rows = m_rowHeights.GetCount();
m_cols = m_colWidths.GetCount();
int idx, width, height;
- AdjustForGrowables(sz, minsz, m_rows, m_cols);
+ AdjustForGrowables(sz);
// Find the start positions on the window of the rows and columns
wxArrayInt rowpos;
{
int row, col, endrow, endcol;
wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
- item->GetPos(row, col);
- item->GetEndPos(endrow, endcol);
-
- height = 0;
- for(idx=row; idx <= endrow; idx++)
- height += m_rowHeights[idx] + m_vgap;
-
- width = 0;
- for (idx=col; idx <= endcol; idx++)
- width += m_colWidths[idx] + m_hgap;
-
- SetItemBounds(item, colpos[col], rowpos[row], width, height);
+
+ if ( item->IsShown() )
+ {
+ item->GetPos(row, col);
+ item->GetEndPos(endrow, endcol);
+
+ height = 0;
+ for(idx=row; idx <= endrow; idx++)
+ height += m_rowHeights[idx];
+ height += (endrow - row) * m_vgap; // add a vgap for every row spanned
+
+ width = 0;
+ for (idx=col; idx <= endcol; idx++)
+ width += m_colWidths[idx];
+ width += (endcol - col) * m_hgap; // add a hgap for every col spanned
+
+ SetItemBounds(item, colpos[col], rowpos[row], width, height);
+ }
node = node->GetNext();
- }
+ }
}
+// Sometimes CalcMin can result in some rows or cols having too much space in
+// them because as it traverses the items it makes some assumptions when
+// items span to other cells. But those assumptions can become invalid later
+// on when other items are fitted into the same rows or columns that the
+// spanning item occupies. This method tries to find those situations and
+// fixes them.
+void wxGridBagSizer::AdjustForOverflow()
+{
+ int row, col;
+
+ for (row=0; row<(int)m_rowHeights.GetCount(); row++)
+ {
+ int rowExtra=INT_MAX;
+ int rowHeight = m_rowHeights[row];
+ for (col=0; col<(int)m_colWidths.GetCount(); col++)
+ {
+ wxGBPosition pos(row,col);
+ wxGBSizerItem* item = FindItemAtPosition(pos);
+ if ( !item || !item->IsShown() )
+ continue;
+
+ int endrow, endcol;
+ item->GetEndPos(endrow, endcol);
+
+ // If the item starts in this position and doesn't span rows, then
+ // just look at the whole item height
+ if ( item->GetPos() == pos && endrow == row )
+ {
+ int itemHeight = item->CalcMin().GetHeight();
+ rowExtra = wxMin(rowExtra, rowHeight - itemHeight);
+ continue;
+ }
+
+ // Otherwise, only look at spanning items if they end on this row
+ if ( endrow == row )
+ {
+ // first deduct the portions of the item that are on prior rows
+ int itemHeight = item->CalcMin().GetHeight();
+ for (int r=item->GetPos().GetRow(); r<row; r++)
+ itemHeight -= (m_rowHeights[r] + GetHGap());
+
+ if ( itemHeight < 0 )
+ itemHeight = 0;
+
+ // and check how much is left
+ rowExtra = wxMin(rowExtra, rowHeight - itemHeight);
+ }
+ }
+ if ( rowExtra && rowExtra != INT_MAX )
+ m_rowHeights[row] -= rowExtra;
+ }
+
+ // Now do the same thing for columns
+ for (col=0; col<(int)m_colWidths.GetCount(); col++)
+ {
+ int colExtra=INT_MAX;
+ int colWidth = m_colWidths[col];
+ for (row=0; row<(int)m_rowHeights.GetCount(); row++)
+ {
+ wxGBPosition pos(row,col);
+ wxGBSizerItem* item = FindItemAtPosition(pos);
+ if ( !item || !item->IsShown() )
+ continue;
+
+ int endrow, endcol;
+ item->GetEndPos(endrow, endcol);
+
+ if ( item->GetPos() == pos && endcol == col )
+ {
+ int itemWidth = item->CalcMin().GetWidth();
+ colExtra = wxMin(colExtra, colWidth - itemWidth);
+ continue;
+ }
+
+ if ( endcol == col )
+ {
+ int itemWidth = item->CalcMin().GetWidth();
+ for (int c=item->GetPos().GetCol(); c<col; c++)
+ itemWidth -= (m_colWidths[c] + GetVGap());
+
+ if ( itemWidth < 0 )
+ itemWidth = 0;
+
+ colExtra = wxMin(colExtra, colWidth - itemWidth);
+ }
+ }
+ if ( colExtra && colExtra != INT_MAX )
+ m_colWidths[col] -= colExtra;
+ }
+
+
+}
//---------------------------------------------------------------------------
if ( excludeItem && item == excludeItem )
continue;
-
+
if ( item->Intersects(pos, span) )
return true;
// we'll try to make them automatically select a location for the item
// anyway.
-void wxGridBagSizer::Add( wxWindow *window, int, int flag, int border, wxObject* userData )
+wxSizerItem* wxGridBagSizer::Add( wxWindow *window, int, int flag, int border, wxObject* userData )
{
- Add(window, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
+ return Add(window, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
}
-void wxGridBagSizer::Add( wxSizer *sizer, int, int flag, int border, wxObject* userData )
+wxSizerItem* wxGridBagSizer::Add( wxSizer *sizer, int, int flag, int border, wxObject* userData )
{
- Add(sizer, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
+ return Add(sizer, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
}
-void wxGridBagSizer::Add( int width, int height, int, int flag, int border, wxObject* userData )
+wxSizerItem* wxGridBagSizer::Add( int width, int height, int, int flag, int border, wxObject* userData )
{
- Add(width, height, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
+ return Add(width, height, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
}
// this class and should not be used. Their implementation in this class
// simply fails.
-void wxGridBagSizer::Add( wxSizerItem * )
-{ wxFAIL_MSG(wxT("Invalid Add form called.")); }
+wxSizerItem* wxGridBagSizer::Add( wxSizerItem * )
+{
+ wxFAIL_MSG(wxT("Invalid Add form called."));
+ return NULL;
+}
-void wxGridBagSizer::Prepend( wxWindow *, int, int, int, wxObject* )
-{ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Prepend( wxWindow *, int, int, int, wxObject* )
+{
+ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
+ return NULL;
+}
-void wxGridBagSizer::Prepend( wxSizer *, int, int, int, wxObject* )
-{ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Prepend( wxSizer *, int, int, int, wxObject* )
+{
+ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
+ return NULL;
+}
-void wxGridBagSizer::Prepend( int, int, int, int, int, wxObject* )
-{ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Prepend( int, int, int, int, int, wxObject* )
+{
+ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
+ return NULL;
+}
-void wxGridBagSizer::Prepend( wxSizerItem * )
-{ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Prepend( wxSizerItem * )
+{
+ wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
+ return NULL;
+}
-void wxGridBagSizer::Insert( size_t, wxWindow *, int, int, int, wxObject* )
-{ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Insert( size_t, wxWindow *, int, int, int, wxObject* )
+{
+ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
+ return NULL;
+}
-void wxGridBagSizer::Insert( size_t, wxSizer *, int, int, int, wxObject* )
-{ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Insert( size_t, wxSizer *, int, int, int, wxObject* )
+{
+ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
+ return NULL;
+}
-void wxGridBagSizer::Insert( size_t, int, int, int, int, int, wxObject* )
-{ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Insert( size_t, int, int, int, int, int, wxObject* )
+{
+ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
+ return NULL;
+}
-void wxGridBagSizer::Insert( size_t, wxSizerItem * )
-{ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer.")); }
+wxSizerItem* wxGridBagSizer::Insert( size_t, wxSizerItem * )
+{
+ wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
+ return NULL;
+}
//---------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff