X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/57d7f9888e18d350fb023fdccd39e0ab7a3bb8dd..83a7613b7186bb2597a393b6bcb14166f1e0641d:/src/common/sizer.cpp diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp index 5f3c324720..89eaacb15d 100644 --- a/src/common/sizer.cpp +++ b/src/common/sizer.cpp @@ -17,8 +17,8 @@ #pragma hdrstop #endif -#include "wx/display.h" #include "wx/sizer.h" +#include "wx/private/flagscheck.h" #ifndef WX_PRECOMP #include "wx/string.h" @@ -31,6 +31,8 @@ #include "wx/toplevel.h" #endif // WX_PRECOMP +#include "wx/display.h" +#include "wx/vector.h" #include "wx/listimpl.cpp" @@ -87,6 +89,31 @@ WX_DEFINE_EXPORTED_LIST( wxSizerItemList ) // wxSizerItem // ---------------------------------------------------------------------------- +// check for flags conflicts +static const int SIZER_FLAGS_MASK = + wxADD_FLAG(wxCENTRE, + wxADD_FLAG(wxHORIZONTAL, + wxADD_FLAG(wxVERTICAL, + wxADD_FLAG(wxLEFT, + wxADD_FLAG(wxRIGHT, + wxADD_FLAG(wxUP, + wxADD_FLAG(wxDOWN, + wxADD_FLAG(wxALIGN_NOT, + wxADD_FLAG(wxALIGN_CENTER_HORIZONTAL, + wxADD_FLAG(wxALIGN_RIGHT, + wxADD_FLAG(wxALIGN_BOTTOM, + wxADD_FLAG(wxALIGN_CENTER_VERTICAL, + wxADD_FLAG(wxFIXED_MINSIZE, + wxADD_FLAG(wxRESERVE_SPACE_EVEN_IF_HIDDEN, + wxADD_FLAG(wxSTRETCH_NOT, + wxADD_FLAG(wxSHRINK, + wxADD_FLAG(wxGROW, + wxADD_FLAG(wxSHAPED, + 0)))))))))))))))))); + +#define ASSERT_VALID_SIZER_FLAGS(f) wxASSERT_VALID_FLAGS(f, SIZER_FLAGS_MASK) + + void wxSizerItem::Init(const wxSizerFlags& flags) { Init(); @@ -94,6 +121,8 @@ void wxSizerItem::Init(const wxSizerFlags& flags) m_proportion = flags.GetProportion(); m_flag = flags.GetFlags(); m_border = flags.GetBorderInPixels(); + + ASSERT_VALID_SIZER_FLAGS( m_flag ); } wxSizerItem::wxSizerItem() @@ -103,12 +132,13 @@ wxSizerItem::wxSizerItem() m_proportion = 0; m_border = 0; m_flag = 0; + m_id = wxID_NONE; } // 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; @@ -132,8 +162,11 @@ wxSizerItem::wxSizerItem(wxWindow *window, m_proportion(proportion), m_border(border), m_flag(flag), + m_id(wxID_NONE), m_userData(userData) { + ASSERT_VALID_SIZER_FLAGS( m_flag ); + DoSetWindow(window); } @@ -154,9 +187,12 @@ wxSizerItem::wxSizerItem(wxSizer *sizer, m_proportion(proportion), m_border(border), m_flag(flag), + m_id(wxID_NONE), m_ratio(0.0), m_userData(userData) { + ASSERT_VALID_SIZER_FLAGS( m_flag ); + DoSetSizer(sizer); // m_minSize is set later @@ -183,8 +219,11 @@ wxSizerItem::wxSizerItem(int width, m_proportion(proportion), m_border(border), m_flag(flag), + m_id(wxID_NONE), m_userData(userData) { + ASSERT_VALID_SIZER_FLAGS( m_flag ); + DoSetSpacer(wxSize(width, height)); } @@ -215,7 +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; @@ -253,7 +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) @@ -268,6 +307,73 @@ wxSize wxSizerItem::GetSize() const return ret; } +bool wxSizerItem::InformFirstDirection(int direction, int size, int availableOtherDir) +{ + // The size that come here will be including borders. Child items should get it + // without borders. + if( size>0 ) + { + if( direction==wxHORIZONTAL ) + { + if (m_flag & wxWEST) + size -= m_border; + if (m_flag & wxEAST) + size -= m_border; + } + else if( direction==wxVERTICAL ) + { + if (m_flag & wxNORTH) + size -= m_border; + if (m_flag & wxSOUTH) + size -= m_border; + } + } + + bool didUse = false; + // Pass the information along to the held object + if (IsSizer()) + { + didUse = GetSizer()->InformFirstDirection(direction,size,availableOtherDir); + if (didUse) + m_minSize = GetSizer()->CalcMin(); + } + else if (IsWindow()) + { + didUse = GetWindow()->InformFirstDirection(direction,size,availableOtherDir); + if (didUse) + m_minSize = m_window->GetEffectiveMinSize(); + + // This information is useful for items with wxSHAPED flag, since + // we can request an optimal min size for such an item. Even if + // we overwrite the m_minSize member here, we can read it back from + // the owned window (happens automatically). + if( (m_flag & wxSHAPED) && (m_flag & wxEXPAND) && direction ) + { + if( !wxIsNullDouble(m_ratio) ) + { + 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 + if( availableOtherDir>=0 && int(size/m_ratio)-m_minSize.y>availableOtherDir ) + size = int((availableOtherDir+m_minSize.y)*m_ratio); + m_minSize = wxSize(size,int(size/m_ratio)); + } + else if( direction==wxVERTICAL ) + { + // Clip size so that we don't take too much + if( availableOtherDir>=0 && int(size*m_ratio)-m_minSize.x>availableOtherDir ) + size = int((availableOtherDir+m_minSize.x)/m_ratio); + m_minSize = wxSize(int(size*m_ratio),size); + } + didUse = true; + } + } + } + + return didUse; +} + wxSize wxSizerItem::CalcMin() { if (IsSizer()) @@ -371,16 +477,27 @@ 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.x, pos.y, size.x, size.y); + m_sizer->SetDimension(pos, size); break; case Item_Spacer: @@ -389,7 +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") ); } } @@ -418,7 +535,7 @@ void wxSizerItem::DeleteWindows() case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } } @@ -428,7 +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: @@ -445,12 +562,15 @@ void wxSizerItem::Show( bool show ) case Item_Max: default: - wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") ); + wxFAIL_MSG( wxT("unexpected wxSizerItem::m_kind") ); } } bool wxSizerItem::IsShown() const { + if ( m_flag & wxRESERVE_SPACE_EVEN_IF_HIDDEN ) + return true; + switch ( m_kind ) { case Item_None: @@ -462,32 +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; @@ -515,13 +630,16 @@ 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 ); if ( item->GetWindow() ) item->GetWindow()->SetContainingSizer( this ); + if ( item->GetSizer() ) + item->GetSizer()->SetContainingWindow( m_containingWindow ); + return item; } @@ -557,7 +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) @@ -581,11 +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 ); @@ -595,7 +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) @@ -617,7 +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) @@ -640,11 +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(); @@ -658,8 +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) @@ -686,8 +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) @@ -713,12 +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); @@ -760,11 +878,13 @@ void wxSizer::DeleteWindows() } } -wxSize wxSizer::Fit( wxWindow *window ) +wxSize wxSizer::ComputeFittingClientSize(wxWindow *window) { + wxCHECK_MSG( window, wxDefaultSize, "window can't be NULL" ); + // take the min size by default and limit it by max size - wxSize size = GetMinWindowSize(window); - wxSize sizeMax = GetMaxWindowSize(window); + wxSize size = GetMinClientSize(window); + wxSize sizeMax; wxTopLevelWindow *tlw = wxDynamicCast(window, wxTopLevelWindow); if ( tlw ) @@ -772,31 +892,51 @@ wxSize wxSizer::Fit( wxWindow *window ) // hack for small screen devices where TLWs are always full screen if ( tlw->IsAlwaysMaximized() ) { - size = tlw->GetSize(); + return tlw->GetClientSize(); } - else // normal situation - { - // limit the window to the size of the display it is on - int disp = wxDisplay::GetFromWindow(window); - if ( disp == wxNOT_FOUND ) - { - // or, if we don't know which one it is, of the main one - disp = 0; - } - sizeMax = wxDisplay(disp).GetClientArea().GetSize(); + // limit the window to the size of the display it is on + int disp = wxDisplay::GetFromWindow(window); + if ( disp == wxNOT_FOUND ) + { + // or, if we don't know which one it is, of the main one + disp = 0; } + + sizeMax = wxDisplay(disp).GetClientArea().GetSize(); + + // space for decorations and toolbars etc. + sizeMax = tlw->WindowToClientSize(sizeMax); + } + else + { + sizeMax = GetMaxClientSize(window); } if ( sizeMax.x != wxDefaultCoord && size.x > sizeMax.x ) - size.x = sizeMax.x; + size.x = sizeMax.x; if ( sizeMax.y != wxDefaultCoord && size.y > sizeMax.y ) - size.y = sizeMax.y; + size.y = sizeMax.y; + return size; +} - window->SetSize( size ); +wxSize wxSizer::ComputeFittingWindowSize(wxWindow *window) +{ + wxCHECK_MSG( window, wxDefaultSize, "window can't be NULL" ); - return size; + return window->ClientToWindowSize(ComputeFittingClientSize(window)); +} + +wxSize wxSizer::Fit( wxWindow *window ) +{ + wxCHECK_MSG( window, wxDefaultSize, "window can't be NULL" ); + + // set client size + window->SetClientSize(ComputeFittingClientSize(window)); + + // return entire size + return window->GetSize(); } void wxSizer::FitInside( wxWindow *window ) @@ -825,59 +965,31 @@ void wxSizer::SetSizeHints( wxWindow *window ) // Preserve the window's max size hints, but set the // lower bound according to the sizer calculations. - wxSize size = Fit( window ); + // This is equivalent to calling Fit(), except that we need to set + // the size hints _in between_ the two steps performed by Fit + // (1. ComputeFittingClientSize, 2. SetClientSize). That's because + // otherwise SetClientSize() could have no effect if there already are + // size hints in effect that forbid requested client size. + + const wxSize clientSize = ComputeFittingClientSize(window); - window->SetSizeHints( size.x, - size.y, - window->GetMaxWidth(), - window->GetMaxHeight() ); + window->SetMinClientSize(clientSize); + window->SetClientSize(clientSize); } +#if WXWIN_COMPATIBILITY_2_8 void wxSizer::SetVirtualSizeHints( wxWindow *window ) { - // Preserve the window's max size hints, but set the - // lower bound according to the sizer calculations. - FitInside( window ); - wxSize size( window->GetVirtualSize() ); - window->SetVirtualSizeHints( size.x, - size.y, - window->GetMaxWidth(), - window->GetMaxHeight() ); -} - -wxSize wxSizer::GetMaxWindowSize( wxWindow *window ) const -{ - return window->GetMaxSize(); -} - -wxSize wxSizer::GetMinWindowSize( wxWindow *window ) -{ - wxSize minSize( GetMinSize() ); - wxSize size( window->GetSize() ); - wxSize client_size( window->GetClientSize() ); - - return wxSize( minSize.x+size.x-client_size.x, - minSize.y+size.y-client_size.y ); } +#endif // WXWIN_COMPATIBILITY_2_8 // TODO on mac we need a function that determines how much free space this // min size contains, in order to make sure that we have 20 pixels of free // space around the controls wxSize wxSizer::GetMaxClientSize( wxWindow *window ) const { - wxSize maxSize( window->GetMaxSize() ); - - if ( maxSize != wxDefaultSize ) - { - wxSize size( window->GetSize() ); - wxSize client_size( window->GetClientSize() ); - - return wxSize( maxSize.x + client_size.x - size.x, - maxSize.y + client_size.y - size.y ); - } - else - return wxDefaultSize; + return window->WindowToClientSize(window->GetMaxSize()); } wxSize wxSizer::GetMinClientSize( wxWindow *WXUNUSED(window) ) @@ -900,15 +1012,6 @@ wxSize wxSizer::VirtualFitSize( wxWindow *window ) return size; } -void wxSizer::SetDimension( int x, int y, int width, int height ) -{ - m_position.x = x; - m_position.y = y; - m_size.x = width; - m_size.y = height; - Layout(); -} - wxSize wxSizer::GetMinSize() { wxSize ret( CalcMin() ); @@ -925,7 +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? @@ -963,7 +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? @@ -1003,7 +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(); @@ -1023,7 +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) @@ -1049,7 +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) @@ -1077,11 +1180,38 @@ 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(); } +wxSizerItem* wxSizer::GetItemById( int id, bool recursive ) +{ + // This gets a sizer item by the id of the sizer item + // and NOT the id of a window if the item is a window. + + wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); + while (node) + { + wxSizerItem *item = node->GetData(); + + if (item->GetId() == id) + { + return item; + } + else if (recursive && item->IsSizer()) + { + wxSizerItem *subitem = item->GetSizer()->GetItemById( id, true ); + if (subitem) + return subitem; + } + + node = node->GetNext(); + } + + return NULL; +} + bool wxSizer::Show( wxWindow *window, bool show, bool recursive ) { wxSizerItem *item = GetItem( window, recursive ); @@ -1145,7 +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; } @@ -1164,7 +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; } @@ -1173,7 +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(); } @@ -1183,45 +1313,82 @@ 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() ) { } -int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const +wxSizerItem *wxGridSizer::DoInsert(size_t index, wxSizerItem *item) { - int nitems = m_children.GetCount(); - if ( nitems) + // 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 ( m_cols ) - { - ncols = m_cols; - nrows = (nitems + m_cols - 1) / m_cols; - } - else if ( m_rows ) + const int nitems = m_children.GetCount(); + if ( nitems == m_cols*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") ); - - nrows = ncols = 0; + 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) + ); + + // 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; } } + 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; } @@ -1248,7 +1415,7 @@ 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); } @@ -1280,6 +1447,35 @@ wxSize wxGridSizer::CalcMin() node = node->GetNext(); } + // In case we have a nested sizer with a two step algo , give it + // a chance to adjust to that (we give it width component) + node = m_children.GetFirst(); + bool didChangeMinSize = false; + while (node) + { + wxSizerItem *item = node->GetData(); + didChangeMinSize |= item->InformFirstDirection( wxHORIZONTAL, w, -1 ); + + node = node->GetNext(); + } + + // And redo iteration in case min size changed + if( didChangeMinSize ) + { + node = m_children.GetFirst(); + w = h = 0; + while (node) + { + wxSizerItem *item = node->GetData(); + wxSize sz( item->GetMinSizeWithBorder() ); + + w = wxMax( w, sz.x ); + h = wxMax( h, sz.y ); + + node = node->GetNext(); + } + } + return wxSize( ncols * w + (ncols-1) * m_hgap, nrows * h + (nrows-1) * m_vgap ); } @@ -1322,6 +1518,20 @@ 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), @@ -1329,8 +1539,8 @@ 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) { @@ -1342,105 +1552,158 @@ wxFlexGridSizer::~wxFlexGridSizer() void wxFlexGridSizer::RecalcSizes() { - int nitems, nrows, ncols; - if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 ) + int nrows, ncols; + if ( !CalcRowsCols(nrows, ncols) ) return; - wxPoint pt( GetPosition() ); - wxSize sz( GetSize() ); + const wxPoint pt(GetPosition()); + const wxSize sz(GetSize()); - AdjustForGrowables(sz, m_calculatedMinSize, nrows, ncols); + AdjustForGrowables(sz); - sz = wxSize( pt.x + sz.x, pt.y + sz.y ); + wxSizerItemList::const_iterator i = m_children.begin(); + const wxSizerItemList::const_iterator end = m_children.end(); - int x = pt.x; - for (int c = 0; c < ncols; c++) + int y = 0; + for ( int r = 0; r < nrows; r++ ) { - int y = pt.y; - for (int r = 0; r < nrows; r++) + if ( m_rowHeights[r] == -1 ) { - int i = r * ncols + c; - if (i < nitems) + // this row is entirely hidden, skip it + for ( int c = 0; c < ncols; c++ ) { - wxSizerItemList::compatibility_iterator node = m_children.Item( i ); + if ( i == end ) + return; - wxASSERT_MSG( node, _T("Failed to find node") ); + ++i; + } - int w = wxMax( 0, wxMin( m_colWidths[c], sz.x - x ) ); - int h = wxMax( 0, wxMin( m_rowHeights[r], sz.y - y ) ); + continue; + } - SetItemBounds( node->GetData(), x, y, w, h); - } - if (m_rowHeights[r] != -1) - y = y + m_rowHeights[r] + m_vgap; + const int hrow = m_rowHeights[r]; + int h = sz.y - y; // max remaining height, don't overflow it + if ( hrow < h ) + h = hrow; + + int x = 0; + for ( int c = 0; c < ncols && i != end; c++, ++i ) + { + const int wcol = m_colWidths[c]; + + if ( wcol == -1 ) + continue; + + int w = sz.x - x; // max possible value, ensure we don't overflow + if ( wcol < w ) + w = wcol; + + SetItemBounds(*i, pt.x + x, pt.y + y, w, h); + + x += wcol + m_hgap; } - if (m_colWidths[c] != -1) - x = x + m_colWidths[c] + m_hgap; + + if ( i == end ) + return; + + y += hrow + m_vgap; } } +// helper function used in CalcMin() to sum up the sizes of non-hidden items +static int SumArraySizes(const wxArrayInt& sizes, int gap) +{ + // Sum total minimum size, including gaps between rows/columns. + // -1 is used as a magic number meaning empty row/column. + int total = 0; + + const size_t count = sizes.size(); + for ( size_t n = 0; n < count; n++ ) + { + if ( sizes[n] != -1 ) + { + if ( total ) + total += gap; // separate from the previous column + + total += sizes[n]; + } + } + + return total; +} + +void wxFlexGridSizer::FindWidthsAndHeights(int nrows, int ncols) +{ + // We have to recalculate the sizes in case the item minimum size has + // changed since the previous layout, or the item has been hidden using + // wxSizer::Show(). If all the items in a row/column are hidden, the final + // dimension of the row/column will be -1, indicating that the column + // itself is hidden. + m_rowHeights.assign(nrows, -1); + m_colWidths.assign(ncols, -1); + + // n is the index of the item in left-to-right top-to-bottom order + size_t n = 0; + for ( wxSizerItemList::iterator i = m_children.begin(); + i != m_children.end(); + ++i, ++n ) + { + wxSizerItem * const item = *i; + if ( item->IsShown() ) + { + // NOTE: Not doing the calculation here, this is just + // for finding max values. + const wxSize sz(item->GetMinSizeWithBorder()); + + const int row = n / ncols; + const int col = n % ncols; + + if ( sz.y > m_rowHeights[row] ) + m_rowHeights[row] = sz.y; + if ( sz.x > m_colWidths[col] ) + m_colWidths[col] = sz.x; + } + } + + AdjustForFlexDirection(); + + m_calculatedMinSize = wxSize(SumArraySizes(m_colWidths, m_hgap), + SumArraySizes(m_rowHeights, m_vgap)); +} + wxSize wxFlexGridSizer::CalcMin() { - int nrows, - ncols; - size_t i, s; + int nrows, + ncols; // Number of rows/columns can change as items are added or removed. if ( !CalcRowsCols(nrows, ncols) ) return wxSize(); - m_rowHeights.SetCount(nrows); - m_colWidths.SetCount(ncols); - // We have to recalcuate the sizes in case the item minimum size has + // We have to recalculate the sizes in case the item minimum size has // changed since the previous layout, or the item has been hidden using // wxSizer::Show(). If all the items in a row/column are hidden, the final // dimension of the row/column will be -1, indicating that the column // itself is hidden. - for( s = m_rowHeights.GetCount(), i = 0; i < s; ++i ) - m_rowHeights[ i ] = -1; - for( s = m_colWidths.GetCount(), i = 0; i < s; ++i ) - m_colWidths[ i ] = -1; - - wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); + m_rowHeights.assign(nrows, -1); + m_colWidths.assign(ncols, -1); - i = 0; - while (node) + for ( wxSizerItemList::iterator i = m_children.begin(); + i != m_children.end(); + ++i) { - wxSizerItem *item = node->GetData(); + wxSizerItem * const item = *i; if ( item->IsShown() ) { - wxSize sz( item->CalcMin() ); - int row = i / ncols; - int col = i % ncols; - - m_rowHeights[ row ] = wxMax( wxMax( 0, sz.y ), m_rowHeights[ row ] ); - m_colWidths[ col ] = wxMax( wxMax( 0, sz.x ), m_colWidths[ col ] ); + item->CalcMin(); } - - node = node->GetNext(); - i++; } - AdjustForFlexDirection(); + // The stage of looking for max values in each row/column has been + // made a separate function, since it's reused in AdjustForGrowables. + FindWidthsAndHeights(nrows,ncols); - // Sum total minimum size, including gaps between rows/columns. - // -1 is used as a magic number meaning empty column. - int width = 0; - for (int col = 0; col < ncols; col++) - if ( m_colWidths[ col ] != -1 ) - width += m_colWidths[ col ] + m_hgap; - if (width > 0) - width -= m_hgap; - - int height = 0; - for (int row = 0; row < nrows; row++) - if ( m_rowHeights[ row ] != -1 ) - height += m_rowHeights[ row ] + m_vgap; - if (height > 0) - height -= m_vgap; - - m_calculatedMinSize = wxSize( width, height ); return m_calculatedMinSize; } @@ -1470,128 +1733,215 @@ void wxFlexGridSizer::AdjustForFlexDirection() // and now fill it with the largest value for ( n = 0; n < count; ++n ) { - array[n] = largest; + // don't touch hidden rows + if ( array[n] != -1 ) + array[n] = largest; } } } +// helper of AdjustForGrowables() which is called for rows/columns separately +// +// parameters: +// delta: the extra space, we do nothing unless it's positive +// growable: indices or growable rows/cols in sizes array +// sizes: the height/widths of rows/cols to adjust +// proportions: proportions of the growable rows/cols or NULL if they all +// should be assumed to have proportion of 1 +static void +DoAdjustForGrowables(int delta, + const wxArrayInt& growable, + wxArrayInt& sizes, + const wxArrayInt *proportions) +{ + if ( delta <= 0 ) + return; + + // total sum of proportions of all non-hidden rows + int sum_proportions = 0; + + // number of currently shown growable rows + int num = 0; + + const int max_idx = sizes.size(); + + const size_t count = growable.size(); + size_t idx; + for ( idx = 0; idx < count; idx++ ) + { + // Since the number of rows/columns can change as items are + // inserted/deleted, we need to verify at runtime that the + // requested growable rows/columns are still valid. + if ( growable[idx] >= max_idx ) + continue; + + // If all items in a row/column are hidden, that row/column will + // have a dimension of -1. This causes the row/column to be + // hidden completely. + if ( sizes[growable[idx]] == -1 ) + continue; + + if ( proportions ) + sum_proportions += (*proportions)[idx]; + + num++; + } + + if ( !num ) + return; + + // the remaining extra free space, adjusted during each iteration + for ( idx = 0; idx < count; idx++ ) + { + if ( growable[idx] >= max_idx ) + continue; + + if ( sizes[ growable[idx] ] == -1 ) + continue; + + int cur_delta; + if ( sum_proportions == 0 ) + { + // no growable rows -- divide extra space evenly among all + cur_delta = delta/num; + num--; + } + else // allocate extra space proportionally + { + const int cur_prop = (*proportions)[idx]; + cur_delta = (delta*cur_prop)/sum_proportions; + sum_proportions -= cur_prop; + } + + sizes[growable[idx]] += cur_delta; + delta -= cur_delta; + } +} -void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz, const wxSize& minsz, - int nrows, int ncols) +void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz) { - // what to do with the rows? by default, resize them proportionally - if ( sz.y > minsz.y && ( (m_flexDirection & wxVERTICAL) || (m_growMode == wxFLEX_GROWMODE_SPECIFIED) ) ) +#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 ) { - int sum_proportions = 0; - int growable_space = 0; - int num = 0; - size_t idx; - for (idx = 0; idx < m_growableRows.GetCount(); idx++) + if ( !m_rows ) { - // Since the number of rows/columns can change as items are - // inserted/deleted, we need to verify at runtime that the - // requested growable rows/columns are still valid. - if (m_growableRows[idx] >= nrows) - continue; + int nrows = CalcRows(); - // If all items in a row/column are hidden, that row/column will - // have a dimension of -1. This causes the row/column to be - // hidden completely. - if (m_rowHeights[ m_growableRows[idx] ] == -1) - continue; - sum_proportions += m_growableRowsProportions[idx]; - growable_space += m_rowHeights[ m_growableRows[idx] ]; - num++; + for ( size_t n = 0; n < m_growableRows.size(); n++ ) + { + wxASSERT_MSG( m_growableRows[n] < nrows, + "invalid growable row index" ); + } } - if (num > 0) + if ( !m_cols ) { - for (idx = 0; idx < m_growableRows.GetCount(); idx++) + int ncols = CalcCols(); + + for ( size_t n = 0; n < m_growableCols.size(); n++ ) { - if (m_growableRows[idx] >= nrows ) - continue; - if (m_rowHeights[ m_growableRows[idx] ] == -1) - m_rowHeights[ m_growableRows[idx] ] = 0; - else - { - int delta = (sz.y - minsz.y); - if (sum_proportions == 0) - delta = (delta/num) + m_rowHeights[ m_growableRows[idx] ]; - else - delta = ((delta+growable_space)*m_growableRowsProportions[idx]) / sum_proportions; - m_rowHeights[ m_growableRows[idx] ] = delta; - } + wxASSERT_MSG( m_growableCols[n] < ncols, + "invalid growable column index" ); } } } - else if ( (m_growMode == wxFLEX_GROWMODE_ALL) && (sz.y > minsz.y) ) - { - // rounding problem? - for ( int row = 0; row < nrows; ++row ) - m_rowHeights[ row ] = sz.y / nrows; - } +#endif // wxDEBUG_LEVEL - // the same logic as above but for the columns - if ( sz.x > minsz.x && ( (m_flexDirection & wxHORIZONTAL) || (m_growMode == wxFLEX_GROWMODE_SPECIFIED) ) ) + + if ( (m_flexDirection & wxHORIZONTAL) || (m_growMode != wxFLEX_GROWMODE_NONE) ) { - int sum_proportions = 0; - int growable_space = 0; - int num = 0; - size_t idx; - for (idx = 0; idx < m_growableCols.GetCount(); idx++) + DoAdjustForGrowables + ( + sz.x - m_calculatedMinSize.x, + m_growableCols, + m_colWidths, + m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableColsProportions + : NULL + ); + + // This gives nested objects that benefit from knowing one size + // component in advance the chance to use that. + bool didAdjustMinSize = false; + + // Iterate over all items and inform about column width + const int ncols = GetEffectiveColsCount(); + int col = 0; + for ( wxSizerItemList::iterator i = m_children.begin(); + i != m_children.end(); + ++i ) { - // Since the number of rows/columns can change as items are - // inserted/deleted, we need to verify at runtime that the - // requested growable rows/columns are still valid. - if (m_growableCols[idx] >= ncols) - continue; - - // If all items in a row/column are hidden, that row/column will - // have a dimension of -1. This causes the column to be hidden - // completely. - if (m_colWidths[ m_growableCols[idx] ] == -1) - continue; - sum_proportions += m_growableColsProportions[idx]; - growable_space += m_colWidths[ m_growableCols[idx] ]; - num++; + didAdjustMinSize |= (*i)->InformFirstDirection(wxHORIZONTAL, m_colWidths[col], sz.y - m_calculatedMinSize.y); + if ( ++col == ncols ) + col = 0; } - if (num > 0) + // Only redo if info was actually used + if( didAdjustMinSize ) { - for (idx = 0; idx < m_growableCols.GetCount(); idx++) - { - if (m_growableCols[idx] >= ncols ) - continue; - if (m_colWidths[ m_growableCols[idx] ] == -1) - m_colWidths[ m_growableCols[idx] ] = 0; - else - { - int delta = (sz.x - minsz.x); - if (sum_proportions == 0) - delta = (delta/num) + m_colWidths[ m_growableCols[idx] ]; - else - delta = ((delta+growable_space)*m_growableColsProportions[idx])/sum_proportions; - m_colWidths[ m_growableCols[idx] ] = delta; - } - } + DoAdjustForGrowables + ( + sz.x - m_calculatedMinSize.x, + m_growableCols, + m_colWidths, + m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableColsProportions + : NULL + ); } } - else if ( (m_growMode == wxFLEX_GROWMODE_ALL) && (sz.x > minsz.x) ) + + if ( (m_flexDirection & wxVERTICAL) || (m_growMode != wxFLEX_GROWMODE_NONE) ) { - for ( int col=0; col < ncols; ++col ) - m_colWidths[ col ] = sz.x / ncols; + // pass NULL instead of proportions if the grow mode is ALL as we + // should treat all rows as having proportion of 1 then + DoAdjustForGrowables + ( + sz.y - m_calculatedMinSize.y, + m_growableRows, + m_rowHeights, + m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableRowsProportions + : NULL + ); } } +bool wxFlexGridSizer::IsRowGrowable( size_t idx ) +{ + return m_growableRows.Index( idx ) != wxNOT_FOUND; +} + +bool wxFlexGridSizer::IsColGrowable( size_t idx ) +{ + return m_growableCols.Index( idx ) != wxNOT_FOUND; +} void wxFlexGridSizer::AddGrowableRow( size_t idx, int proportion ) { + 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 ) { + 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 ); } @@ -1611,7 +1961,7 @@ 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 ) @@ -1628,204 +1978,365 @@ void wxFlexGridSizer::RemoveGrowableRow( size_t idx ) // wxBoxSizer //--------------------------------------------------------------------------- -wxBoxSizer::wxBoxSizer( int orient ) - : m_orient( orient ) +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.GetCount() == 0) + if ( m_children.empty() ) return; - int delta = 0; - if (m_stretchable) + 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 = 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 + + + // 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 ) { - if (m_orient == wxHORIZONTAL) - delta = m_size.x - m_fixedWidth; - else - delta = m_size.y - m_fixedHeight; + wxSizerItem * const item = *i; + + if ( !item->IsShown() ) + continue; + + wxSize szMinPrev = item->GetMinSizeWithBorder(); + item->InformFirstDirection(m_orient^wxBOTH,totalMinorSize,delta); + wxSize szMin = item->GetMinSizeWithBorder(); + int deltaChange = GetSizeInMajorDir(szMin-szMinPrev); + if( deltaChange ) + { + // Since we passed available space along to the item, it should not + // take too much, so delta should not become negative. + delta -= deltaChange; + } + minMajorSize += GetSizeInMajorDir(item->GetMinSizeWithBorder()); } - wxPoint pt( m_position ); + // update our min size and delta which may have changed + SizeInMajorDir(m_minSize) = minMajorSize; + delta = totalMajorSize - minMajorSize; - wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); - while (node) + + // space and sum of proportions for the remaining items, both may change + // below + wxCoord remaining = totalMajorSize; + int totalProportion = m_totalProportion; + + // 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 *item = node->GetData(); + // 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; + + // deal with fixed size items only during this pass + if ( item->GetProportion() ) + continue; + + majorSizes[n] = GetMinOrRemainingSize(m_orient, item, &remaining); + } + - if (item->IsShown()) + // 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 ) { - wxSize size( item->GetMinSizeWithBorder() ); + wxSizerItem * const item = *i; - if (m_orient == wxVERTICAL) + 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 ) { - wxCoord height = size.y; - if (item->GetProportion()) - { - // Because of at least one visible item has non-zero - // proportion then m_stretchable is not zero - height = (delta * item->GetProportion()) / m_stretchable; - } + i = m_children.begin(); + n = 0; + nonFixedSpaceChanged = false; + } - wxPoint child_pos( pt ); - wxSize child_size( size.x, height ); + // 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; - if (item->GetFlag() & (wxEXPAND | wxSHAPED)) - child_size.x = m_size.x; - else if (item->GetFlag() & wxALIGN_RIGHT) - child_pos.x += m_size.x - size.x; - else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_HORIZONTAL)) - // XXX wxCENTER is added for backward compatibility; - // wxALIGN_CENTER should be used in new code - child_pos.x += (m_size.x - size.x) / 2; + wxSizerItem * const item = *i; - item->SetDimension( child_pos, child_size ); + if ( !item->IsShown() ) + continue; - pt.y += height; - } - else + // 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 ) { - wxCoord width = size.x; - if (item->GetProportion()) + // is the desired size of this item big enough? + if ( (remaining*propItem)/totalProportion >= minMajor ) { - // Because of at least one visible item has non-zero - // proportion then m_stretchable is not zero - width = (delta * item->GetProportion()) / m_stretchable; + // yes, it is, we'll determine the real size of this + // item later, for now just leave it as wxDefaultCoord + continue; } - wxPoint child_pos( pt ); - wxSize child_size( width, size.y ); + // the proportion of this item won't count, it has + // effectively become fixed + totalProportion -= propItem; + } - if (item->GetFlag() & (wxEXPAND | wxSHAPED)) - child_size.y = m_size.y; - else if (item->GetFlag() & wxALIGN_BOTTOM) - child_pos.y += m_size.y - size.y; - else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_VERTICAL)) - // XXX wxCENTER is added for backward compatibility; - // wxALIGN_CENTER should be used in new code - child_pos.y += (m_size.y - size.y) / 2; + // we can already allocate space for this item + majorSizes[n] = minMajor; - if ( m_containingWindow ) - { - child_pos.x = m_containingWindow->AdjustForLayoutDirection - ( - child_pos.x, - width, - m_size.x - ); - } + // 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; - item->SetDimension( child_pos, child_size ); + if ( !item->IsShown() ) + continue; + + if ( majorSizes[n] == wxDefaultCoord ) + { + const int propItem = item->GetProportion(); + majorSizes[n] = (remaining*propItem)/totalProportion; - pt.x += width; + remaining -= majorSizes[n]; + totalProportion -= propItem; } } - - node = node->GetNext(); } -} -wxSize wxBoxSizer::CalcMin() -{ - if (m_children.GetCount() == 0) - return wxSize(); - m_stretchable = 0; - m_minWidth = 0; - m_minHeight = 0; - m_fixedWidth = 0; - m_fixedHeight = 0; + // the position at which we put the next child + wxPoint pt(m_position); - // precalc item minsizes and count proportions - wxSizerItemList::compatibility_iterator node = m_children.GetFirst(); - while (node) + + // 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 *item = node->GetData(); + wxSizerItem * const item = *i; - if ( item->IsShown() ) - { - item->CalcMin(); // result is stored in the item + if ( !item->IsShown() ) + continue; - m_stretchable += item->GetProportion(); - } + const int majorSize = majorSizes[n]; - node = node->GetNext(); - } + const wxSize sizeThis(item->GetMinSizeWithBorder()); - // Total minimum size (width or height) of sizer - int maxMinSize = 0; + // apply the alignment in the minor direction + wxPoint posChild(pt); - node = m_children.GetFirst(); - while (node) - { - wxSizerItem *item = node->GetData(); - - if (item->IsShown() && item->GetProportion() != 0) + wxCoord minorSize = GetSizeInMinorDir(sizeThis); + const int flag = item->GetFlag(); + 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) ) + { + PosInMinorDir(posChild) += totalMinorSize - minorSize; + } + // 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)) ) { - int stretch = item->GetProportion(); - wxSize size( item->GetMinSizeWithBorder() ); - int minSize; + PosInMinorDir(posChild) += (totalMinorSize - minorSize) / 2; + } - // Integer division rounded up is (a + b - 1) / b - // Round up needed in order to guarantee that all - // all items will have size not less then their min size - if (m_orient == wxHORIZONTAL) - minSize = ( size.x*m_stretchable + stretch - 1)/stretch; - else - minSize = ( size.y*m_stretchable + stretch - 1)/stretch; - if (minSize > maxMinSize) - maxMinSize = minSize; + // apply RTL adjustment for horizontal sizers: + if ( !IsVertical() && m_containingWindow ) + { + posChild.x = m_containingWindow->AdjustForLayoutDirection + ( + posChild.x, + majorSize, + m_size.x + ); } - node = node->GetNext(); + + // finally set size of this child and advance to the next one + item->SetDimension(posChild, SizeFromMajorMinor(majorSize, minorSize)); + + PosInMajorDir(pt) += majorSize; } +} - // Calculate overall minimum size - node = m_children.GetFirst(); - while (node) +wxSize wxBoxSizer::CalcMin() +{ + m_totalProportion = 0; + m_minSize = wxSize(0, 0); + + // 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 ) { - wxSizerItem *item = node->GetData(); + wxSizerItem * const item = *i; - if (item->IsShown()) + if ( !item->IsShown() ) + continue; + + const wxSize sizeMinThis = item->CalcMin(); + if ( const int propThis = item->GetProportion() ) { - wxSize size( item->GetMinSizeWithBorder() ); - if (item->GetProportion() != 0) - { - if (m_orient == wxHORIZONTAL) - size.x = (maxMinSize*item->GetProportion())/m_stretchable; - else - size.y = (maxMinSize*item->GetProportion())/m_stretchable; - } - else - { - if (m_orient == wxVERTICAL) - { - m_fixedHeight += size.y; - m_fixedWidth = wxMax( m_fixedWidth, size.x ); - } - else - { - m_fixedWidth += size.x; - m_fixedHeight = wxMax( m_fixedHeight, size.y ); - } - } + float minSizeToProp = GetSizeInMajorDir(sizeMinThis); + minSizeToProp /= propThis; - if (m_orient == wxHORIZONTAL) - { - m_minWidth += size.x; - m_minHeight = wxMax( m_minHeight, size.y ); - } - else - { - m_minHeight += size.y; - m_minWidth = wxMax( m_minWidth, size.x ); - } + if ( minSizeToProp > maxMinSizeToProp ) + maxMinSizeToProp = minSizeToProp; + + m_totalProportion += item->GetProportion(); } - node = node->GetNext(); + 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); } - return wxSize( m_minWidth, m_minHeight ); + // 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; } //--------------------------------------------------------------------------- @@ -1858,29 +2369,44 @@ 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; @@ -1890,10 +2416,17 @@ 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; @@ -1921,6 +2454,10 @@ bool wxStaticBoxSizer::Detach( wxWindow *window ) #endif // wxUSE_STATBOX +//--------------------------------------------------------------------------- +// wxStdDialogButtonSizer +//--------------------------------------------------------------------------- + #if wxUSE_BUTTON wxStdDialogButtonSizer::wxStdDialogButtonSizer() @@ -1989,6 +2526,29 @@ void wxStdDialogButtonSizer::SetCancelButton( wxButton *button ) m_buttonCancel = button; } +#ifdef __WXGTK20__ + +namespace +{ + +// Returns true only if the button is non-NULL and has the given id and text +// (possible translated). +bool IsStdButtonWithStdText(wxButton *btn, wxWindowID id, const char *label) +{ + if ( !btn ) + return false; + + if ( btn->GetId() != id ) + return false; + + const wxString labelText = btn->GetLabelText(); + return labelText == label || labelText == wxGetTranslation(label); +} + +} // anonymous namespace + +#endif // __WXGTK20__ + void wxStdDialogButtonSizer::Realize() { #ifdef __WXMAC__ @@ -2028,32 +2588,57 @@ 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 + // describes the margins and the buttons order but basically it is + // + // [Help] [Alternative] [Cancel] [Affirmative] + // + // in general case but, somewhat confusingly, the native message box + // uses "No Yes Cancel" with these particular buttons so do we as well. + + // 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); + // "No Yes Cancel" is an exception to the general rule according to + // which the affirmative buttons goes after "Cancel" so treat it + // separately + if ( IsStdButtonWithStdText(m_buttonNegative, wxID_NO, "No") && + IsStdButtonWithStdText(m_buttonAffirmative, wxID_YES, "Yes") && + IsStdButtonWithStdText(m_buttonCancel, wxID_CANCEL, "Cancel") ) + { + Add(m_buttonNegative, flagsBtn); + Add(m_buttonAffirmative, flagsBtn); + Add(m_buttonCancel, flagsBtn); } + else // Use standard layout + { + 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); + if (m_buttonApply) + 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(m_buttonAffirmative, flagsBtn); } - if (m_buttonAffirmative) - Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT, 6); + // Ensure that the right margin is 12 as well. + AddSpacer(9); #elif defined(__WXMSW__) // Windows