X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2003d0037f6575a4351abef25d7fcc7d28947bdd..2f30930a092c85f3255f8a0d79873cde438b0445:/src/common/sizer.cpp diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp index ad5f899c8c..31f2503850 100644 --- a/src/common/sizer.cpp +++ b/src/common/sizer.cpp @@ -32,6 +32,7 @@ #endif // WX_PRECOMP #include "wx/display.h" +#include "wx/vector.h" #include "wx/listimpl.cpp" @@ -137,7 +138,7 @@ wxSizerItem::wxSizerItem() // window item void wxSizerItem::DoSetWindow(wxWindow *window) { - wxCHECK_RET( window, _T("NULL window in wxSizerItem::SetWindow()") ); + wxCHECK_RET( window, wxT("NULL window in wxSizerItem::SetWindow()") ); m_kind = Item_Window; m_window = window; @@ -253,7 +254,7 @@ void wxSizerItem::Free() case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } m_kind = Item_None; @@ -291,7 +292,7 @@ wxSize wxSizerItem::GetSize() const case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } if (m_flag & wxWEST) @@ -350,7 +351,7 @@ bool wxSizerItem::InformFirstDirection(int direction, int size, int availableOth { if( !wxIsNullDouble(m_ratio) ) { - wxCHECK_MSG( (m_proportion==0), false, _T("Shaped item, non-zero proportion in wxSizerItem::InformFirstDirection()") ); + wxCHECK_MSG( (m_proportion==0), false, wxT("Shaped item, non-zero proportion in wxSizerItem::InformFirstDirection()") ); if( direction==wxHORIZONTAL && !wxIsNullDouble(m_ratio) ) { // Clip size so that we don't take too much @@ -476,7 +477,7 @@ void wxSizerItem::SetDimension( const wxPoint& pos_, const wxSize& size_ ) switch ( m_kind ) { case Item_None: - wxFAIL_MSG( _T("can't set size of uninitialized sizer item") ); + wxFAIL_MSG( wxT("can't set size of uninitialized sizer item") ); break; case Item_Window: @@ -505,7 +506,7 @@ void wxSizerItem::SetDimension( const wxPoint& pos_, const wxSize& size_ ) case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } } @@ -534,7 +535,7 @@ void wxSizerItem::DeleteWindows() case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } } @@ -544,7 +545,7 @@ void wxSizerItem::Show( bool show ) switch ( m_kind ) { case Item_None: - wxFAIL_MSG( _T("can't show uninitialized sizer item") ); + wxFAIL_MSG( wxT("can't show uninitialized sizer item") ); break; case Item_Window: @@ -561,7 +562,7 @@ void wxSizerItem::Show( bool show ) case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } } @@ -606,7 +607,7 @@ bool wxSizerItem::IsShown() const case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } return false; @@ -634,7 +635,7 @@ wxSizer::~wxSizer() WX_CLEAR_LIST(wxSizerItemList, m_children); } -wxSizerItem* wxSizer::Insert( size_t index, wxSizerItem *item ) +wxSizerItem* wxSizer::DoInsert( size_t index, wxSizerItem *item ) { m_children.Insert( index, item ); @@ -679,7 +680,7 @@ bool wxSizer::Remove( wxWindow *window ) bool wxSizer::Remove( wxSizer *sizer ) { - wxASSERT_MSG( sizer, _T("Removing NULL sizer") ); + wxASSERT_MSG( sizer, wxT("Removing NULL sizer") ); wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); while (node) @@ -703,11 +704,11 @@ bool wxSizer::Remove( int index ) { wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(), false, - _T("Remove index is out of range") ); + wxT("Remove index is out of range") ); wxSizerItemList::compatibility_iterator node = m_children.Item( index ); - wxCHECK_MSG( node, false, _T("Failed to find child node") ); + wxCHECK_MSG( node, false, wxT("Failed to find child node") ); delete node->GetData(); m_children.Erase( node ); @@ -717,7 +718,7 @@ bool wxSizer::Remove( int index ) bool wxSizer::Detach( wxSizer *sizer ) { - wxASSERT_MSG( sizer, _T("Detaching NULL sizer") ); + wxASSERT_MSG( sizer, wxT("Detaching NULL sizer") ); wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); while (node) @@ -739,7 +740,7 @@ bool wxSizer::Detach( wxSizer *sizer ) bool wxSizer::Detach( wxWindow *window ) { - wxASSERT_MSG( window, _T("Detaching NULL window") ); + wxASSERT_MSG( window, wxT("Detaching NULL window") ); wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); while (node) @@ -762,11 +763,11 @@ bool wxSizer::Detach( int index ) { wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(), false, - _T("Detach index is out of range") ); + wxT("Detach index is out of range") ); wxSizerItemList::compatibility_iterator node = m_children.Item( index ); - wxCHECK_MSG( node, false, _T("Failed to find child node") ); + wxCHECK_MSG( node, false, wxT("Failed to find child node") ); wxSizerItem *item = node->GetData(); @@ -780,8 +781,8 @@ bool wxSizer::Detach( int index ) bool wxSizer::Replace( wxWindow *oldwin, wxWindow *newwin, bool recursive ) { - wxASSERT_MSG( oldwin, _T("Replacing NULL window") ); - wxASSERT_MSG( newwin, _T("Replacing with NULL window") ); + wxASSERT_MSG( oldwin, wxT("Replacing NULL window") ); + wxASSERT_MSG( newwin, wxT("Replacing with NULL window") ); wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); while (node) @@ -808,8 +809,8 @@ bool wxSizer::Replace( wxWindow *oldwin, wxWindow *newwin, bool recursive ) bool wxSizer::Replace( wxSizer *oldsz, wxSizer *newsz, bool recursive ) { - wxASSERT_MSG( oldsz, _T("Replacing NULL sizer") ); - wxASSERT_MSG( newsz, _T("Replacing with NULL sizer") ); + wxASSERT_MSG( oldsz, wxT("Replacing NULL sizer") ); + wxASSERT_MSG( newsz, wxT("Replacing with NULL sizer") ); wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); while (node) @@ -835,12 +836,12 @@ bool wxSizer::Replace( wxSizer *oldsz, wxSizer *newsz, bool recursive ) bool wxSizer::Replace( size_t old, wxSizerItem *newitem ) { - wxCHECK_MSG( old < m_children.GetCount(), false, _T("Replace index is out of range") ); - wxASSERT_MSG( newitem, _T("Replacing with NULL item") ); + wxCHECK_MSG( old < m_children.GetCount(), false, wxT("Replace index is out of range") ); + wxASSERT_MSG( newitem, wxT("Replacing with NULL item") ); wxSizerItemList::compatibility_iterator node = m_children.Item( old ); - wxCHECK_MSG( node, false, _T("Failed to find child node") ); + wxCHECK_MSG( node, false, wxT("Failed to find child node") ); wxSizerItem *item = node->GetData(); node->SetData(newitem); @@ -1032,7 +1033,7 @@ void wxSizer::DoSetMinSize( int width, int height ) bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height ) { - wxASSERT_MSG( window, _T("SetMinSize for NULL window") ); + wxASSERT_MSG( window, wxT("SetMinSize for NULL window") ); // Is it our immediate child? @@ -1070,7 +1071,7 @@ bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height ) bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height ) { - wxASSERT_MSG( sizer, _T("SetMinSize for NULL sizer") ); + wxASSERT_MSG( sizer, wxT("SetMinSize for NULL sizer") ); // Is it our immediate child? @@ -1110,7 +1111,7 @@ bool wxSizer::DoSetItemMinSize( size_t index, int width, int height ) { wxSizerItemList::compatibility_iterator node = m_children.Item( index ); - wxCHECK_MSG( node, false, _T("Failed to find child node") ); + wxCHECK_MSG( node, false, wxT("Failed to find child node") ); wxSizerItem *item = node->GetData(); @@ -1130,7 +1131,7 @@ bool wxSizer::DoSetItemMinSize( size_t index, int width, int height ) wxSizerItem* wxSizer::GetItem( wxWindow *window, bool recursive ) { - wxASSERT_MSG( window, _T("GetItem for NULL window") ); + wxASSERT_MSG( window, wxT("GetItem for NULL window") ); wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); while (node) @@ -1156,7 +1157,7 @@ wxSizerItem* wxSizer::GetItem( wxWindow *window, bool recursive ) wxSizerItem* wxSizer::GetItem( wxSizer *sizer, bool recursive ) { - wxASSERT_MSG( sizer, _T("GetItem for NULL sizer") ); + wxASSERT_MSG( sizer, wxT("GetItem for NULL sizer") ); wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); while (node) @@ -1184,7 +1185,7 @@ wxSizerItem* wxSizer::GetItem( size_t index ) { wxCHECK_MSG( index < m_children.GetCount(), NULL, - _T("GetItem index is out of range") ); + wxT("GetItem index is out of range") ); return m_children.Item( index )->GetData(); } @@ -1279,7 +1280,7 @@ bool wxSizer::IsShown( wxWindow *window ) const node = node->GetNext(); } - wxFAIL_MSG( _T("IsShown failed to find sizer item") ); + wxFAIL_MSG( wxT("IsShown failed to find sizer item") ); return false; } @@ -1298,7 +1299,7 @@ bool wxSizer::IsShown( wxSizer *sizer ) const node = node->GetNext(); } - wxFAIL_MSG( _T("IsShown failed to find sizer item") ); + wxFAIL_MSG( wxT("IsShown failed to find sizer item") ); return false; } @@ -1307,7 +1308,7 @@ bool wxSizer::IsShown( size_t index ) const { wxCHECK_MSG( index < m_children.GetCount(), false, - _T("IsShown index is out of range") ); + wxT("IsShown index is out of range") ); return m_children.Item( index )->GetData()->IsShown(); } @@ -1317,23 +1318,39 @@ bool wxSizer::IsShown( size_t index ) const // wxGridSizer //--------------------------------------------------------------------------- +wxGridSizer::wxGridSizer( int cols, int vgap, int hgap ) + : m_rows( cols == 0 ? 1 : 0 ), + m_cols( cols ), + m_vgap( vgap ), + m_hgap( hgap ) +{ +} + +wxGridSizer::wxGridSizer( int cols, const wxSize& gap ) + : m_rows( cols == 0 ? 1 : 0 ), + m_cols( cols ), + m_vgap( gap.GetHeight() ), + m_hgap( gap.GetWidth() ) +{ +} + wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap ) - : m_rows( ( cols == 0 && rows == 0 ) ? 1 : rows ) - , m_cols( cols ) - , m_vgap( vgap ) - , m_hgap( hgap ) + : m_rows( rows || cols ? rows : 1 ), + m_cols( cols ), + m_vgap( vgap ), + m_hgap( hgap ) { } -wxGridSizer::wxGridSizer( int cols, int vgap, int hgap ) - : m_rows( cols == 0 ? 1 : 0 ) - , m_cols( cols ) - , m_vgap( vgap ) - , m_hgap( hgap ) +wxGridSizer::wxGridSizer( int rows, int cols, const wxSize& gap ) + : m_rows( rows || cols ? rows : 1 ), + m_cols( cols ), + m_vgap( gap.GetHeight() ), + m_hgap( gap.GetWidth() ) { } -wxSizerItem *wxGridSizer::Insert(size_t index, wxSizerItem *item) +wxSizerItem *wxGridSizer::DoInsert(size_t index, wxSizerItem *item) { // if only the number of columns or the number of rows is specified for a // sizer, arbitrarily many items can be added to it but if both of them are @@ -1353,7 +1370,7 @@ wxSizerItem *wxGridSizer::Insert(size_t index, wxSizerItem *item) // additionally, continuing to use the specified number of columns // and rows is not a good idea as callers of CalcRowsCols() expect - // that all sizer items can fit into m_cols/m_rows-sized arrays + // that all sizer items can fit into m_cols-/m_rows-sized arrays // which is not the case if there are too many items and results in // crashes, so let it compute the number of rows automatically by // forgetting the (wrong) number of rows specified (this also has a @@ -1363,38 +1380,19 @@ wxSizerItem *wxGridSizer::Insert(size_t index, wxSizerItem *item) } } - return wxSizer::Insert(index, item); + return wxSizer::DoInsert(index, item); } int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const { const int nitems = m_children.GetCount(); - if ( m_cols && m_rows ) - { - ncols = m_cols; - nrows = m_rows; - // this should be impossible because the too high number of items - // should have been detected by Insert() above - wxASSERT_MSG( nitems <= ncols*nrows, "logic error in wxGridSizer" ); - } - else if ( m_cols ) - { - ncols = m_cols; - nrows = (nitems + m_cols - 1) / m_cols; - } - else if ( m_rows ) - { - ncols = (nitems + m_rows - 1) / m_rows; - nrows = m_rows; - } - else // 0 columns, 0 rows? - { - wxFAIL_MSG( _T("grid sizer must have either rows or columns fixed") ); + ncols = GetEffectiveColsCount(); + nrows = GetEffectiveRowsCount(); - nrows = - ncols = 0; - } + // Since Insert() checks for overpopulation, the following + // should only assert if the grid was shrunk via SetRows() / SetCols() + wxASSERT_MSG( nitems <= ncols*nrows, "logic error in wxGridSizer" ); return nitems; } @@ -1422,7 +1420,7 @@ void wxGridSizer::RecalcSizes() { wxSizerItemList::compatibility_iterator node = m_children.Item( i ); - wxASSERT_MSG( node, _T("Failed to find SizerItemList node") ); + wxASSERT_MSG( node, wxT("Failed to find SizerItemList node") ); SetItemBounds( node->GetData(), x, y, w, h); } @@ -1525,6 +1523,20 @@ void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h ) // wxFlexGridSizer //--------------------------------------------------------------------------- +wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap ) + : wxGridSizer( cols, vgap, hgap ), + m_flexDirection(wxBOTH), + m_growMode(wxFLEX_GROWMODE_SPECIFIED) +{ +} + +wxFlexGridSizer::wxFlexGridSizer( int cols, const wxSize& gap ) + : wxGridSizer( cols, gap ), + m_flexDirection(wxBOTH), + m_growMode(wxFLEX_GROWMODE_SPECIFIED) +{ +} + wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap ) : wxGridSizer( rows, cols, vgap, hgap ), m_flexDirection(wxBOTH), @@ -1532,8 +1544,8 @@ wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap ) { } -wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap ) - : wxGridSizer( cols, vgap, hgap ), +wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, const wxSize& gap ) + : wxGridSizer( rows, cols, gap ), m_flexDirection(wxBOTH), m_growMode(wxFLEX_GROWMODE_SPECIFIED) { @@ -1820,11 +1832,10 @@ void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz) // comments in AddGrowableCol/Row()) if ( !m_rows || !m_cols ) { - int nrows, ncols; - CalcRowsCols(nrows, ncols); - if ( !m_rows ) { + int nrows = CalcRows(); + for ( size_t n = 0; n < m_growableRows.size(); n++ ) { wxASSERT_MSG( m_growableRows[n] < nrows, @@ -1834,6 +1845,8 @@ void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz) if ( !m_cols ) { + int ncols = CalcCols(); + for ( size_t n = 0; n < m_growableCols.size(); n++ ) { wxASSERT_MSG( m_growableCols[n] < ncols, @@ -1858,17 +1871,17 @@ void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz) // This gives nested objects that benefit from knowing one size // component in advance the chance to use that. bool didAdjustMinSize = false; - int nrows, ncols; - CalcRowsCols(nrows, ncols); // Iterate over all items and inform about column width - size_t n = 0; + const int ncols = GetEffectiveColsCount(); + int col = 0; for ( wxSizerItemList::iterator i = m_children.begin(); i != m_children.end(); - ++i, ++n ) + ++i ) { - const int col = n % ncols; didAdjustMinSize |= (*i)->InformFirstDirection(wxHORIZONTAL, m_colWidths[col], sz.y - m_calculatedMinSize.y); + if ( ++col == ncols ) + col = 0; } // Only redo if info was actually used @@ -1912,9 +1925,6 @@ bool wxFlexGridSizer::IsColGrowable( size_t idx ) void wxFlexGridSizer::AddGrowableRow( size_t idx, int proportion ) { - int nrows, ncols; - CalcRowsCols(nrows, ncols); - wxASSERT_MSG( !IsRowGrowable( idx ), "AddGrowableRow() called for growable row" ); @@ -1930,15 +1940,12 @@ void wxFlexGridSizer::AddGrowableRow( size_t idx, int proportion ) void wxFlexGridSizer::AddGrowableCol( size_t idx, int proportion ) { - int nrows, ncols; - CalcRowsCols(nrows, ncols); - wxASSERT_MSG( !IsColGrowable( idx ), "AddGrowableCol() called for growable column" ); // see comment in AddGrowableRow(): although it's less common to omit the // specification of the number of columns, it still can also happen - wxCHECK_RET( !m_cols || idx < (size_t)ncols, "invalid column index" ); + wxCHECK_RET( !m_cols || idx < (size_t)m_cols, "invalid column index" ); m_growableCols.Add( idx ); m_growableColsProportions.Add( proportion ); @@ -1959,7 +1966,7 @@ DoRemoveFromArrays(size_t idx, wxArrayInt& items, wxArrayInt& proportions) } } - wxFAIL_MSG( _T("column/row is already not growable") ); + wxFAIL_MSG( wxT("column/row is already not growable") ); } void wxFlexGridSizer::RemoveGrowableCol( size_t idx ) @@ -1976,25 +1983,78 @@ void wxFlexGridSizer::RemoveGrowableRow( size_t idx ) // wxBoxSizer //--------------------------------------------------------------------------- +wxSizerItem *wxBoxSizer::AddSpacer(int size) +{ + return IsVertical() ? Add(0, size) : Add(size, 0); +} + +namespace +{ + +/* + Helper of RecalcSizes(): checks if there is enough remaining space for the + min size of the given item and returns its min size or the entire remaining + space depending on which one is greater. + + This function updates the remaining space parameter to account for the size + effectively allocated to the item. + */ +int +GetMinOrRemainingSize(int orient, const wxSizerItem *item, int *remainingSpace_) +{ + int& remainingSpace = *remainingSpace_; + + wxCoord size; + if ( remainingSpace > 0 ) + { + const wxSize sizeMin = item->GetMinSizeWithBorder(); + size = orient == wxHORIZONTAL ? sizeMin.x : sizeMin.y; + + if ( size >= remainingSpace ) + { + // truncate the item to fit in the remaining space, this is better + // than showing it only partially in general, even if both choices + // are bad -- but there is nothing else we can do + size = remainingSpace; + } + + remainingSpace -= size; + } + else // no remaining space + { + // no space at all left, no need to even query the item for its min + // size as we can't give it to it anyhow + size = 0; + } + + return size; +} + +} // anonymous namespace + void wxBoxSizer::RecalcSizes() { if ( m_children.empty() ) return; const wxCoord totalMinorSize = GetSizeInMinorDir(m_size); + const wxCoord totalMajorSize = GetSizeInMajorDir(m_size); // the amount of free space which we should redistribute among the // stretchable items (i.e. those with non zero proportion) - int delta = GetSizeInMajorDir(m_size) - GetSizeInMajorDir(m_minSize); + int delta = totalMajorSize - GetSizeInMajorDir(m_minSize); + // declare loop variables used below: + wxSizerItemList::const_iterator i; // iterator in m_children list + unsigned n = 0; // item index in majorSizes array - // Inform child items about the size in minor direction, that can - // change how much free space we have in major dir and how to distribute it. - int majorMinSum = 0; - wxSizerItemList::const_iterator i ; - for ( i = m_children.begin(); - i != m_children.end(); - ++i ) + + // First, inform item about the available size in minor direction as this + // can change their size in the major direction. Also compute the number of + // visible items and sum of their min sizes in major direction. + + int minMajorSize = 0; + for ( i = m_children.begin(); i != m_children.end(); ++i ) { wxSizerItem * const item = *i; @@ -2011,58 +2071,197 @@ void wxBoxSizer::RecalcSizes() // take too much, so delta should not become negative. delta -= deltaChange; } - majorMinSum += GetSizeInMajorDir(item->GetMinSizeWithBorder()); + minMajorSize += GetSizeInMajorDir(item->GetMinSizeWithBorder()); } - // And update our min size - SizeInMajorDir(m_minSize) = majorMinSum; + // update our min size and delta which may have changed + SizeInMajorDir(m_minSize) = minMajorSize; + delta = totalMajorSize - minMajorSize; - // might have a new delta now - delta = GetSizeInMajorDir(m_size) - GetSizeInMajorDir(m_minSize); - - // the position at which we put the next child - wxPoint pt(m_position); + // space and sum of proportions for the remaining items, both may change + // below + wxCoord remaining = totalMajorSize; int totalProportion = m_totalProportion; - for ( i = m_children.begin(); - i != m_children.end(); - ++i ) + + // size of the (visible) items in major direction, -1 means "not fixed yet" + wxVector majorSizes(GetItemCount(), wxDefaultCoord); + + + // Check for the degenerated case when we don't have enough space for even + // the min sizes of all the items: in this case we really can't do much + // more than to to allocate the min size to as many of fixed size items as + // possible (on the assumption that variable size items such as text zones + // or list boxes may use scrollbars to show their content even if their + // size is less than min size but that fixed size items such as buttons + // will suffer even more if we don't give them their min size) + if ( totalMajorSize < minMajorSize ) { - wxSizerItem * const item = *i; + // Second degenerated case pass: allocate min size to all fixed size + // items. + for ( i = m_children.begin(), n = 0; i != m_children.end(); ++i, ++n ) + { + wxSizerItem * const item = *i; - if ( !item->IsShown() ) - continue; + if ( !item->IsShown() ) + continue; - const wxSize sizeThis(item->GetMinSizeWithBorder()); + // deal with fixed size items only during this pass + if ( item->GetProportion() ) + continue; + + majorSizes[n] = GetMinOrRemainingSize(m_orient, item, &remaining); + } - // adjust the size in the major direction using the proportion - wxCoord majorSize = GetSizeInMajorDir(sizeThis); - // if there is not enough space, don't try to distribute negative space - // among the children, this would result in overlapping windows which - // we don't want - if ( delta > 0 ) + // Third degenerated case pass: allocate min size to all the remaining, + // i.e. non-fixed size, items. + for ( i = m_children.begin(), n = 0; i != m_children.end(); ++i, ++n ) { + wxSizerItem * const item = *i; + + if ( !item->IsShown() ) + continue; + + // we've already dealt with fixed size items above + if ( !item->GetProportion() ) + continue; + + majorSizes[n] = GetMinOrRemainingSize(m_orient, item, &remaining); + } + } + else // we do have enough space to give at least min sizes to all items + { + // Second and maybe more passes in the non-degenerated case: deal with + // fixed size items and items whose min size is greater than what we + // would allocate to them taking their proportion into account. For + // both of them, we will just use their min size, but for the latter we + // also need to reexamine all the items as the items which fitted + // before we adjusted their size upwards might not fit any more. This + // does make for a quadratic algorithm but it's not obvious how to + // avoid it and hopefully it's not a huge problem in practice as the + // sizers don't have many items usually (and, of course, the algorithm + // still reduces into a linear one if there is enough space for all the + // min sizes). + bool nonFixedSpaceChanged = false; + for ( i = m_children.begin(), n = 0; ; ++i, ++n ) + { + if ( nonFixedSpaceChanged ) + { + i = m_children.begin(); + n = 0; + nonFixedSpaceChanged = false; + } + + // check for the end of the loop only after the check above as + // otherwise we wouldn't do another pass if the last child resulted + // in non fixed space reduction + if ( i == m_children.end() ) + break; + + wxSizerItem * const item = *i; + + if ( !item->IsShown() ) + continue; + + // don't check the item which we had already dealt with during a + // previous pass (this is more than an optimization, the code + // wouldn't work correctly if we kept adjusting for the same item + // over and over again) + if ( majorSizes[n] != wxDefaultCoord ) + continue; + + wxCoord minMajor = GetSizeInMajorDir(item->GetMinSizeWithBorder()); + + // it doesn't make sense for min size to be negative but right now + // it's possible to create e.g. a spacer with (-1, 10) as size and + // people do it in their code apparently (see #11842) so ensure + // that we don't use this -1 as real min size as it conflicts with + // the meaning we use for it here and negative min sizes just don't + // make sense anyhow (which is why it might be a better idea to + // deal with them at wxSizerItem level in the future but for now + // this is the minimal fix for the bug) + if ( minMajor < 0 ) + minMajor = 0; + const int propItem = item->GetProportion(); if ( propItem ) { - const int deltaItem = (delta * propItem) / totalProportion; + // is the desired size of this item big enough? + if ( (remaining*propItem)/totalProportion >= minMajor ) + { + // yes, it is, we'll determine the real size of this + // item later, for now just leave it as wxDefaultCoord + continue; + } + + // the proportion of this item won't count, it has + // effectively become fixed + totalProportion -= propItem; + } + + // we can already allocate space for this item + majorSizes[n] = minMajor; + + // change the amount of the space remaining to the other items, + // as this can result in not being able to satisfy their + // proportions any more we will need to redo another loop + // iteration + remaining -= minMajor; + + nonFixedSpaceChanged = true; + } + + + // Last by one pass: distribute the remaining space among the non-fixed + // items whose size weren't fixed yet according to their proportions. + for ( i = m_children.begin(), n = 0; i != m_children.end(); ++i, ++n ) + { + wxSizerItem * const item = *i; + + if ( !item->IsShown() ) + continue; - majorSize += deltaItem; + if ( majorSizes[n] == wxDefaultCoord ) + { + const int propItem = item->GetProportion(); + majorSizes[n] = (remaining*propItem)/totalProportion; - delta -= deltaItem; + remaining -= majorSizes[n]; totalProportion -= propItem; } } + } + + + // the position at which we put the next child + wxPoint pt(m_position); + + // Final pass: finally do position the items correctly using their sizes as + // determined above. + for ( i = m_children.begin(), n = 0; i != m_children.end(); ++i, ++n ) + { + wxSizerItem * const item = *i; + + if ( !item->IsShown() ) + continue; + + const int majorSize = majorSizes[n]; + + const wxSize sizeThis(item->GetMinSizeWithBorder()); // apply the alignment in the minor direction wxPoint posChild(pt); wxCoord minorSize = GetSizeInMinorDir(sizeThis); const int flag = item->GetFlag(); - if ( flag & (wxEXPAND | wxSHAPED) ) + if ( (flag & (wxEXPAND | wxSHAPED)) || (minorSize > totalMinorSize) ) { + // occupy all the available space if wxEXPAND was given and also if + // the item is too big to fit -- in this case we truncate it below + // its minimal size which is bad but better than not showing parts + // of the window at all minorSize = totalMinorSize; } else if ( flag & (IsVertical() ? wxALIGN_RIGHT : wxALIGN_BOTTOM) ) @@ -2071,7 +2270,8 @@ void wxBoxSizer::RecalcSizes() } // NB: wxCENTRE is used here only for backwards compatibility, // wxALIGN_CENTRE should be used in new code - else if ( flag & (wxCENTER | (IsVertical() ? wxALIGN_CENTRE_HORIZONTAL : wxALIGN_CENTRE_VERTICAL))) + else if ( flag & (wxCENTER | (IsVertical() ? wxALIGN_CENTRE_HORIZONTAL + : wxALIGN_CENTRE_VERTICAL)) ) { PosInMinorDir(posChild) += (totalMinorSize - minorSize) / 2; } @@ -2168,12 +2368,12 @@ void wxStaticBoxSizer::RecalcSizes() #if defined( __WXGTK20__ ) // if the wxStaticBox has created a wxPizza to contain its children // (see wxStaticBox::AddChild) then we need to place the items it contains - // in the wxBoxSizer::RecalcSizes() call below using coordinates relative + // in the wxBoxSizer::RecalcSizes() call below using coordinates relative // to the top-left corner of the staticbox: m_position.x = m_position.y = 0; #else // if the wxStaticBox has childrens, then these windows must be placed - // by the wxBoxSizer::RecalcSizes() call below using coordinates relative + // by the wxBoxSizer::RecalcSizes() call below using coordinates relative // to the top-left corner of the staticbox (but unlike wxGTK, we need // to keep in count the static borders here!): m_position.x = other_border;