X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/636a53b35fb8ba4a01651563c60e2cf1df2fd637..0306e73e630bce45a3f56a0616559250fcb8c05e:/src/common/sizer.cpp diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp index 98990a2ee1..959ba220a8 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 @@ -476,14 +477,25 @@ 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: + { + // Use wxSIZE_FORCE_EVENT here since a sizer item might + // have changed alignment or some other property which would + // not change the size of the window. In such a case, no + // wxSizeEvent would normally be generated and thus the + // control wouldn't get layed out correctly here. +#if 1 + m_window->SetSize(pos.x, pos.y, size.x, size.y, + wxSIZE_ALLOW_MINUS_ONE|wxSIZE_FORCE_EVENT ); +#else m_window->SetSize(pos.x, pos.y, size.x, size.y, - wxSIZE_ALLOW_MINUS_ONE); + wxSIZE_ALLOW_MINUS_ONE ); +#endif break; - + } case Item_Sizer: m_sizer->SetDimension(pos, size); break; @@ -494,7 +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") ); } } @@ -523,7 +535,7 @@ void wxSizerItem::DeleteWindows() case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } } @@ -533,7 +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: @@ -550,7 +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") ); } } @@ -570,32 +582,27 @@ bool wxSizerItem::IsShown() const return m_window->IsShown(); case Item_Sizer: + { // arbitrarily decide that if at least one of our elements is // shown, so are we (this arbitrariness is the reason for // deprecating this function) + for ( wxSizerItemList::compatibility_iterator + node = m_sizer->GetChildren().GetFirst(); + node; + node = node->GetNext() ) { - // Some apps (such as dialog editors) depend on an empty sizer still - // being laid out correctly and reporting the correct size and position. - if (m_sizer->GetChildren().GetCount() == 0) + if ( node->GetData()->IsShown() ) return true; - - for ( wxSizerItemList::compatibility_iterator - node = m_sizer->GetChildren().GetFirst(); - node; - node = node->GetNext() ) - { - if ( node->GetData()->IsShown() ) - return true; - } } return false; + } case Item_Spacer: return m_spacer->IsShown(); case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } return false; @@ -623,7 +630,7 @@ 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 ); @@ -668,7 +675,7 @@ 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) @@ -692,11 +699,11 @@ 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 ); @@ -706,7 +713,7 @@ 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) @@ -728,7 +735,7 @@ 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) @@ -751,11 +758,11 @@ 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(); @@ -769,8 +776,8 @@ 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) @@ -797,8 +804,8 @@ 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) @@ -824,12 +831,12 @@ 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); @@ -1021,7 +1028,7 @@ 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? @@ -1059,7 +1066,7 @@ 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? @@ -1099,7 +1106,7 @@ 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(); @@ -1119,7 +1126,7 @@ 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) @@ -1145,7 +1152,7 @@ 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) @@ -1173,7 +1180,7 @@ 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(); } @@ -1268,7 +1275,7 @@ 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; } @@ -1287,7 +1294,7 @@ 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; } @@ -1296,7 +1303,7 @@ 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(); } @@ -1306,52 +1313,85 @@ 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 ) +{ + wxASSERT(cols >= 0); +} + +wxGridSizer::wxGridSizer( int cols, const wxSize& gap ) + : m_rows( cols == 0 ? 1 : 0 ), + m_cols( cols ), + m_vgap( gap.GetHeight() ), + m_hgap( gap.GetWidth() ) +{ + wxASSERT(cols >= 0); +} + 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 ) { + wxASSERT(rows >= 0 && cols >= 0); } -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() ) { + wxASSERT(rows >= 0 && cols >= 0); } -int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const +wxSizerItem *wxGridSizer::DoInsert(size_t index, wxSizerItem *item) { - const int nitems = m_children.GetCount(); + // 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 + // fixed, then the sizer can't have more than that many items -- check for + // this here to ensure that we detect errors as soon as possible if ( m_cols && m_rows ) { - // if both rows and columns are specified by user, use the provided - // values even if we don't have enough items but check that we don't - // have too many of them as this is going to result in problems later - ncols = m_cols; - nrows = m_rows; + const int nitems = m_children.GetCount(); + if ( nitems == m_cols*m_rows ) + { + wxFAIL_MSG( + wxString::Format( + "too many items (%d > %d*%d) in grid sizer (maybe you " + "should omit the number of either rows or columns?)", + nitems + 1, m_cols, m_rows) + ); - wxASSERT_MSG( ncols*nrows >= nitems, "too many items in grid sizer" ); - } - 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; + // 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 + // 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 + // nice side effect of giving only one assert even if there are + // many more items than allowed in this sizer) + m_rows = 0; + } } - else // 0 columns, 0 rows? - { - wxFAIL_MSG( _T("grid sizer must have either rows or columns fixed") ); - nrows = - ncols = 0; - } + return wxSizer::DoInsert(index, item); +} + +int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const +{ + const int nitems = m_children.GetCount(); + + ncols = GetEffectiveColsCount(); + nrows = GetEffectiveRowsCount(); + + // 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; } @@ -1379,7 +1419,7 @@ 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); } @@ -1482,6 +1522,20 @@ 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), @@ -1489,8 +1543,8 @@ 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) { @@ -1770,6 +1824,38 @@ DoAdjustForGrowables(int delta, void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz) { +#if wxDEBUG_LEVEL + // by the time this function is called, the sizer should be already fully + // initialized and hence the number of its columns and rows is known and we + // can check that all indices in m_growableCols/Rows are valid (see also + // comments in AddGrowableCol/Row()) + if ( !m_rows || !m_cols ) + { + if ( !m_rows ) + { + int nrows = CalcRows(); + + for ( size_t n = 0; n < m_growableRows.size(); n++ ) + { + wxASSERT_MSG( m_growableRows[n] < nrows, + "invalid growable row index" ); + } + } + + if ( !m_cols ) + { + int ncols = CalcCols(); + + for ( size_t n = 0; n < m_growableCols.size(); n++ ) + { + wxASSERT_MSG( m_growableCols[n] < ncols, + "invalid growable column index" ); + } + } + } +#endif // wxDEBUG_LEVEL + + if ( (m_flexDirection & wxHORIZONTAL) || (m_growMode != wxFLEX_GROWMODE_NONE) ) { DoAdjustForGrowables @@ -1784,17 +1870,17 @@ 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 @@ -1838,24 +1924,28 @@ bool wxFlexGridSizer::IsColGrowable( size_t idx ) void wxFlexGridSizer::AddGrowableRow( size_t idx, int proportion ) { - int nrows, ncols; - CalcRowsCols(nrows, ncols); - wxCHECK_RET( idx < (size_t)nrows, "invalid row index" ); - wxASSERT_MSG( !IsRowGrowable( idx ), "AddGrowableRow() called for growable row" ); + + // notice that we intentionally don't check the index validity here in (the + // common) case when the number of rows was not specified in the ctor -- in + // this case it will be computed only later, when all items are added to + // the sizer, and the check will be done in AdjustForGrowables() + wxCHECK_RET( !m_rows || idx < (size_t)m_rows, "invalid row index" ); + m_growableRows.Add( idx ); m_growableRowsProportions.Add( proportion ); } void wxFlexGridSizer::AddGrowableCol( size_t idx, int proportion ) { - int nrows, ncols; - CalcRowsCols(nrows, ncols); - wxCHECK_RET( idx < (size_t)ncols, "invalid column index" ); - 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)m_cols, "invalid column index" ); + m_growableCols.Add( idx ); m_growableColsProportions.Add( proportion ); } @@ -1875,7 +1965,7 @@ 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 ) @@ -1892,25 +1982,78 @@ 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; @@ -1927,58 +2070,197 @@ 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; + } - majorSize += deltaItem; + // we can already allocate space for this item + majorSizes[n] = minMajor; - delta -= deltaItem; + // 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; + + if ( majorSizes[n] == wxDefaultCoord ) + { + const int propItem = item->GetProportion(); + majorSizes[n] = (remaining*propItem)/totalProportion; + + 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) ) @@ -1987,7 +2269,8 @@ void wxBoxSizer::RecalcSizes() } // NB: wxCENTRE is used here only for backwards compatibility, // wxALIGN_CENTRE should be used in new code - else if ( flag & (wxCENTER | wxALIGN_CENTRE) ) + else if ( flag & (wxCENTER | (IsVertical() ? wxALIGN_CENTRE_HORIZONTAL + : wxALIGN_CENTRE_VERTICAL)) ) { PosInMinorDir(posChild) += (totalMinorSize - minorSize) / 2; } @@ -2016,7 +2299,12 @@ wxSize wxBoxSizer::CalcMin() m_totalProportion = 0; m_minSize = wxSize(0, 0); - // calculate the minimal sizes for all items and count sum of proportions + // The minimal size for the sizer should be big enough to allocate its + // element at least its minimal size but also, and this is the non trivial + // part, to respect the children proportion. To satisfy the latter + // condition we must find the greatest min-size-to-proportion ratio for all + // elements with non-zero proportion. + float maxMinSizeToProp = 0.; for ( wxSizerItemList::const_iterator i = m_children.begin(); i != m_children.end(); ++i ) @@ -2027,13 +2315,31 @@ wxSize wxBoxSizer::CalcMin() continue; const wxSize sizeMinThis = item->CalcMin(); - SizeInMajorDir(m_minSize) += GetSizeInMajorDir(sizeMinThis); + if ( const int propThis = item->GetProportion() ) + { + float minSizeToProp = GetSizeInMajorDir(sizeMinThis); + minSizeToProp /= propThis; + + if ( minSizeToProp > maxMinSizeToProp ) + maxMinSizeToProp = minSizeToProp; + + m_totalProportion += item->GetProportion(); + } + else // fixed size item + { + // Just account for its size directly + SizeInMajorDir(m_minSize) += GetSizeInMajorDir(sizeMinThis); + } + + // In the transversal direction we just need to find the maximum. if ( GetSizeInMinorDir(sizeMinThis) > GetSizeInMinorDir(m_minSize) ) SizeInMinorDir(m_minSize) = GetSizeInMinorDir(sizeMinThis); - - m_totalProportion += item->GetProportion(); } + // Using the max ratio ensures that the min size is big enough for all + // items to have their min size and satisfy the proportions among them. + SizeInMajorDir(m_minSize) += (int)(maxMinSizeToProp*m_totalProportion); + return m_minSize; } @@ -2067,29 +2373,44 @@ wxStaticBoxSizer::~wxStaticBoxSizer() delete m_staticBox; } -static void GetStaticBoxBorders( wxStaticBox *box, - int *borderTop, - int *borderOther) -{ - // this has to be done platform by platform as there is no way to - // guess the thickness of a wxStaticBox border - box->GetBordersForSizer(borderTop, borderOther); -} - void wxStaticBoxSizer::RecalcSizes() { int top_border, other_border; - GetStaticBoxBorders(m_staticBox, &top_border, &other_border); + m_staticBox->GetBordersForSizer(&top_border, &other_border); m_staticBox->SetSize( m_position.x, m_position.y, m_size.x, m_size.y ); - wxPoint old_pos( m_position ); - m_position.x += other_border; - m_position.y += top_border; wxSize old_size( m_size ); m_size.x -= 2*other_border; m_size.y -= top_border + other_border; + wxPoint old_pos( m_position ); + if (m_staticBox->GetChildren().GetCount() > 0) + { +#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 + // 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 + // 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; + m_position.y = top_border; +#endif + } + else + { + // the windows contained in the staticbox have been created as siblings of the + // staticbox (this is the "old" way of staticbox contents creation); in this + // case we need to position them with coordinates relative to our common parent + m_position.x += other_border; + m_position.y += top_border; + } + wxBoxSizer::RecalcSizes(); m_position = old_pos; @@ -2099,10 +2420,17 @@ void wxStaticBoxSizer::RecalcSizes() wxSize wxStaticBoxSizer::CalcMin() { int top_border, other_border; - GetStaticBoxBorders(m_staticBox, &top_border, &other_border); + m_staticBox->GetBordersForSizer(&top_border, &other_border); wxSize ret( wxBoxSizer::CalcMin() ); ret.x += 2*other_border; + + // ensure that we're wide enough to show the static box label (there is no + // need to check for the static box best size in vertical direction though) + const int boxWidth = m_staticBox->GetBestSize().x; + if ( ret.x < boxWidth ) + ret.x = boxWidth; + ret.y += other_border + top_border; return ret; @@ -2130,6 +2458,10 @@ bool wxStaticBoxSizer::Detach( wxWindow *window ) #endif // wxUSE_STATBOX +//--------------------------------------------------------------------------- +// wxStdDialogButtonSizer +//--------------------------------------------------------------------------- + #if wxUSE_BUTTON wxStdDialogButtonSizer::wxStdDialogButtonSizer() @@ -2237,32 +2569,40 @@ void wxStdDialogButtonSizer::Realize() } // Extra space around and at the right - Add(12, 24); + Add(12, 40); #elif defined(__WXGTK20__) - Add(0, 0, 0, wxLEFT, 9); + // http://library.gnome.org/devel/hig-book/stable/windows-alert.html.en + // says that the correct button order is + // + // [Help] [Alternative] [Cancel] [Affirmative] + + // Flags ensuring that margins between the buttons are 6 pixels. + const wxSizerFlags + flagsBtn = wxSizerFlags().Centre().Border(wxLEFT | wxRIGHT, 3); + + // Margin around the entire sizer button should be 12. + AddSpacer(9); + if (m_buttonHelp) - Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3); + Add(m_buttonHelp, flagsBtn); - // extra whitespace between help and cancel/ok buttons - Add(0, 0, 1, wxEXPAND, 0); + // Align the rest of the buttons to the right. + AddStretchSpacer(); - if (m_buttonNegative){ - Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3); - } + if (m_buttonNegative) + Add(m_buttonNegative, flagsBtn); - // according to HIG, in explicit apply windows the order is: - // [ Help Apply Cancel OK ] if (m_buttonApply) - Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3); + Add(m_buttonApply, flagsBtn); - if (m_buttonCancel){ - Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3); - // Cancel or help should be default - // m_buttonCancel->SetDefaultButton(); - } + if (m_buttonCancel) + Add(m_buttonCancel, flagsBtn); if (m_buttonAffirmative) - Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT, 6); + Add(m_buttonAffirmative, flagsBtn); + + // Ensure that the right margin is 12 as well. + AddSpacer(9); #elif defined(__WXMSW__) // Windows