X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5279a24d25b1d865212c838bb25546f79a9106df..e5c4c38b5d3523bfac08987b5ec09d34f4f61caa:/src/common/sizer.cpp

diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 541fcf3fb2..5a9c11a99f 100644
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -1,132 +1,1549 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        sizer.cpp
-// Purpose:     provide wxSizer class for layounting
-// Author:      Robert Roebling and Robin Dunn
-// Modified by:
-// Created:     
+// Purpose:     provide new wxSizer class for layout
+// Author:      Robert Roebling and Robin Dunn, contributions by
+//              Dirk Holtwick, Ron Lee
+// Modified by: Ron Lee
+// Created:
 // RCS-ID:      $Id$
-// Copyright:   (c) Robin Dunn, Dirk Holtwick and Robert Roebling
+// Copyright:   (c) Robin Dunn, Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifndef __WXSIZERS_H__
-#define __WXSIZERS_H__
-
 #ifdef __GNUG__
-#pragma interface "sizers.h"
+#pragma implementation "sizer.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
 #endif
 
 #include "wx/sizer.h"
+#include "wx/utils.h"
+#include "wx/statbox.h"
+#include "wx/notebook.h"
+#include <wx/listimpl.cpp>
+
+//---------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxSizerItem, wxObject)
+IMPLEMENT_CLASS(wxSizer, wxObject)
+IMPLEMENT_CLASS(wxGridSizer, wxSizer)
+IMPLEMENT_CLASS(wxFlexGridSizer, wxGridSizer)
+IMPLEMENT_CLASS(wxBoxSizer, wxSizer)
+#if wxUSE_STATBOX
+IMPLEMENT_CLASS(wxStaticBoxSizer, wxBoxSizer)
+#endif
+#if wxUSE_NOTEBOOK
+IMPLEMENT_CLASS(wxNotebookSizer, wxSizer)
+#endif
+
+WX_DEFINE_EXPORTED_LIST( wxSizerItemList );
 
 
 //---------------------------------------------------------------------------
 // wxSizerItem
 //---------------------------------------------------------------------------
 
-wxSizerItem::wxSizerItem( int width, int height, int option )
+wxSizerItem::wxSizerItem( int width, int height, int proportion, int flag, int border, wxObject* userData )
+    : m_window( NULL )
+    , m_sizer( NULL )
+    , m_size( wxSize( width, height ) ) // size is set directly
+    , m_minSize( m_size )               // minimal size is the initial size
+    , m_proportion( proportion )
+    , m_border( border )
+    , m_flag( flag )
+    , m_show( true )
+    , m_userData( userData )
 {
-    m_window = (wxWindow *) NULL;
-    m_sizer = (wxSizer *) NULL;
-    m_minSize.x = width;
-    m_minSize.h = height;
-    m_option = option;
+    SetRatio( m_size );
 }
 
-wxSizerItem::wxSizerItem( wxWindow *window, int option )
+wxSizerItem::wxSizerItem( wxWindow *window, int proportion, int flag, int border, wxObject* userData )
+    : m_window( window )
+    , m_sizer( NULL )
+    , m_minSize( window->GetSize() )    // minimal size is the initial size
+    , m_proportion( proportion )
+    , m_border( border )
+    , m_flag( flag )
+    , m_show( true )
+    , m_userData( userData )
 {
-    m_window = window;
-    m_sizer = (wxSizer *) NULL;
-    m_minSize = window->GetSize();
-    m_option = option;
+    // aspect ratio calculated from initial size
+    SetRatio( m_minSize );
+
+    // m_size is calculated later
 }
 
-wxSizerItem::wxSizerItem( wxSizer *sizer, int option )
+wxSizerItem::wxSizerItem( wxSizer *sizer, int proportion, int flag, int border, wxObject* userData )
+    : m_window( NULL )
+    , m_sizer( sizer )
+    , m_proportion( proportion )
+    , m_border( border )
+    , m_flag( flag )
+    , m_show( true )
+    , m_ratio( 0.0 )
+    , m_userData( userData )
 {
-    m_window = (wxWindow *) NULL;
-    m_sizer = sizer;
-    m_minSize.x = -1;
-    m_minSize.h = -1;
-    m_option = option;
+    // m_minSize is calculated later
+    // m_size is calculated later
 }
 
-wxSize wxSizerItem::GetMinSize()
+wxSizerItem::~wxSizerItem()
 {
+    if (m_userData)
+        delete m_userData;
+    if (m_sizer)
+        delete m_sizer;
+}
+
+
+wxSize wxSizerItem::GetSize() const
+{
+    wxSize ret;
     if (IsSizer())
-        return m_sizer->GetMinSize();
+        ret = m_sizer->GetSize();
     else
-        return m_minSize;
+    if (IsWindow())
+        ret = m_window->GetSize();
+    else ret = m_size;
+
+    if (m_flag & wxWEST)
+        ret.x += m_border;
+    if (m_flag & wxEAST)
+        ret.x += m_border;
+    if (m_flag & wxNORTH)
+        ret.y += m_border;
+    if (m_flag & wxSOUTH)
+        ret.y += m_border;
+
+    return ret;
+}
+
+wxSize wxSizerItem::CalcMin()
+{
+    wxSize ret;
+    if (IsSizer())
+    {
+        ret = m_sizer->GetMinSize();
+
+        // if we have to preserve aspect ratio _AND_ this is
+        // the first-time calculation, consider ret to be initial size
+        if ((m_flag & wxSHAPED) && !m_ratio)
+            SetRatio(ret);
+    }
+    else
+    {
+        if ( IsWindow() && (m_flag & wxADJUST_MINSIZE) )
+        {
+            // By user request, keep the minimal size for this item
+            // in sync with the largest of BestSize and any user supplied
+            // minimum size hint.  Useful in cases where the item is
+            // changeable -- static text labels, etc.
+            m_minSize = m_window->GetAdjustedBestSize();
+        }
+
+        ret = m_minSize;
+    }
+
+    if (m_flag & wxWEST)
+        ret.x += m_border;
+    if (m_flag & wxEAST)
+        ret.x += m_border;
+    if (m_flag & wxNORTH)
+        ret.y += m_border;
+    if (m_flag & wxSOUTH)
+        ret.y += m_border;
+
+    return ret;
 }
 
-bool wxSizerItem::IsWindow()
+void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
+{
+    if (m_flag & wxSHAPED)
+    {
+        // adjust aspect ratio
+        int rwidth = (int) (size.y * m_ratio);
+        if (rwidth > size.x)
+        {
+            // fit horizontally
+            int rheight = (int) (size.x / m_ratio);
+            // add vertical space
+            if (m_flag & wxALIGN_CENTER_VERTICAL)
+                pos.y += (size.y - rheight) / 2;
+            else if (m_flag & wxALIGN_BOTTOM)
+                pos.y += (size.y - rheight);
+            // use reduced dimensions
+            size.y =rheight;
+        }
+        else if (rwidth < size.x)
+        {
+            // add horizontal space
+            if (m_flag & wxALIGN_CENTER_HORIZONTAL)
+                pos.x += (size.x - rwidth) / 2;
+            else if (m_flag & wxALIGN_RIGHT)
+                pos.x += (size.x - rwidth);
+            size.x = rwidth;
+        }
+    }
+
+    // This is what GetPosition() returns. Since we calculate
+    // borders afterwards, GetPosition() will be the left/top
+    // corner of the surrounding border.
+    m_pos = pos;
+
+    if (m_flag & wxWEST)
+    {
+        pos.x += m_border;
+        size.x -= m_border;
+    }
+    if (m_flag & wxEAST)
+    {
+        size.x -= m_border;
+    }
+    if (m_flag & wxNORTH)
+    {
+        pos.y += m_border;
+        size.y -= m_border;
+    }
+    if (m_flag & wxSOUTH)
+    {
+        size.y -= m_border;
+    }
+
+    if (IsSizer())
+        m_sizer->SetDimension( pos.x, pos.y, size.x, size.y );
+
+    if (IsWindow())
+        m_window->SetSize( pos.x, pos.y, size.x, size.y, wxSIZE_ALLOW_MINUS_ONE );
+
+    m_size = size;
+}
+
+void wxSizerItem::DeleteWindows()
+{
+    if (m_window)
+         m_window->Destroy();
+
+    if (m_sizer)
+        m_sizer->DeleteWindows();
+}
+
+bool wxSizerItem::IsWindow() const
 {
     return (m_window != NULL);
 }
 
-bool wxSizerItem::IsSizer()
+bool wxSizerItem::IsSizer() const
 {
     return (m_sizer != NULL);
 }
 
-bool wxSizerItem::IsSpacer()
+bool wxSizerItem::IsSpacer() const
 {
     return (m_window == NULL) && (m_sizer == NULL);
 }
 
+void wxSizerItem::Show( bool show )
+{
+    m_show = show;
+
+    if( IsWindow() )
+        m_window->Show( show );
+    else if( IsSizer() )
+        m_sizer->ShowItems( show );
+
+    // ... nothing else to do to hide/show spacers
+}
+
+void wxSizerItem::SetOption( int option )
+{
+    SetProportion( option );
+}
+
+int wxSizerItem::GetOption() const
+{
+    return GetProportion();
+}
+
+
 //---------------------------------------------------------------------------
 // wxSizer
 //---------------------------------------------------------------------------
 
 wxSizer::wxSizer()
+    : m_minSize( wxSize( 0, 0 ) )
 {
-    m_children.DeleteContents( TRUE );
+    m_children.DeleteContents( true );
 }
 
 wxSizer::~wxSizer()
 {
+    Clear();
+}
+
+void wxSizer::Add( wxWindow *window, int proportion, int flag, int border, wxObject* userData )
+{
+    m_children.Append( new wxSizerItem( window, proportion, flag, border, userData ) );
+    window->SetContainingSizer( this );
+}
+
+void wxSizer::Add( wxSizer *sizer, int proportion, int flag, int border, wxObject* userData )
+{
+    m_children.Append( new wxSizerItem( sizer, proportion, flag, border, userData ) );
+}
+
+void wxSizer::Add( int width, int height, int proportion, int flag, int border, wxObject* userData )
+{
+    m_children.Append( new wxSizerItem( width, height, proportion, flag, border, userData ) );
+}
+
+void wxSizer::Add( wxSizerItem *item )
+{
+    m_children.Append( item );
+
+    if( item->GetWindow() )
+        item->GetWindow()->SetContainingSizer( this );
+}
+
+void wxSizer::Prepend( wxWindow *window, int proportion, int flag, int border, wxObject* userData )
+{
+    m_children.Insert( new wxSizerItem( window, proportion, flag, border, userData ) );
+    window->SetContainingSizer( this );
+}
+
+void wxSizer::Prepend( wxSizer *sizer, int proportion, int flag, int border, wxObject* userData )
+{
+    m_children.Insert( new wxSizerItem( sizer, proportion, flag, border, userData ) );
+}
+
+void wxSizer::Prepend( int width, int height, int proportion, int flag, int border, wxObject* userData )
+{
+    m_children.Insert( new wxSizerItem( width, height, proportion, flag, border, userData ) );
+}
+
+void wxSizer::Prepend( wxSizerItem *item )
+{
+    m_children.Insert( item );
+
+    if( item->GetWindow() )
+        item->GetWindow()->SetContainingSizer( this );
+}
+
+void wxSizer::Insert( size_t index,
+                      wxWindow *window,
+                      int proportion,
+                      int flag,
+                      int border,
+                      wxObject* userData )
+{
+    m_children.Insert( index,
+                       new wxSizerItem( window, proportion, flag, border, userData ) );
+    window->SetContainingSizer( this );
+}
+
+void wxSizer::Insert( size_t index,
+                      wxSizer *sizer,
+                      int proportion,
+                      int flag,
+                      int border,
+                      wxObject* userData )
+{
+    m_children.Insert( index,
+                       new wxSizerItem( sizer, proportion, flag, border, userData ) );
+}
+
+void wxSizer::Insert( size_t index,
+                      int width,
+                      int height,
+                      int proportion,
+                      int flag,
+                      int border,
+                      wxObject* userData )
+{
+    m_children.Insert( index,
+                       new wxSizerItem( width, height, proportion, flag, border, userData ) );
+}
+
+void wxSizer::Insert( size_t index, wxSizerItem *item )
+{
+    m_children.Insert( index, item );
+
+    if( item->GetWindow() )
+        item->GetWindow()->SetContainingSizer( this );
+}
+
+bool wxSizer::Remove( wxWindow *window )
+{
+    return Detach( window );
+}
+
+bool wxSizer::Remove( wxSizer *sizer )
+{
+    wxASSERT_MSG( sizer, _T("Removing NULL sizer") );
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+            return m_children.DeleteNode( node );
+
+        node = node->GetNext();
+    }
+
+    return false;
+}
+
+bool wxSizer::Remove( int index )
+{
+    wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(),
+                 false,
+                 _T("Remove index is out of range") );
+
+    wxSizerItemList::Node *node = m_children.Item( index );
+
+    wxCHECK_MSG( node, false, _T("Failed to find child node") );
+
+    wxSizerItem *item = node->GetData();
+
+    if( item->IsWindow() )
+        item->GetWindow()->SetContainingSizer( NULL );
+
+    return m_children.DeleteNode( node );
+}
+
+bool wxSizer::Detach( wxSizer *sizer )
+{
+    wxASSERT_MSG( sizer, _T("Detaching NULL sizer") );
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            item->DetachSizer();
+            return m_children.DeleteNode( node );
+        }
+        node = node->GetNext();
+    }
+
+    return false;
 }
-   
-void wxSizer::Add( wxWindow *window, int option )
+
+bool wxSizer::Detach( wxWindow *window )
 {
-    m_children.Append( new wxSizerItem( window, option ) );
+    wxASSERT_MSG( window, _T("Detaching NULL window") );
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == window)
+        {
+            item->GetWindow()->SetContainingSizer( NULL );
+            return m_children.DeleteNode( node );
+        }
+        node = node->GetNext();
+    }
+
+    return false;
 }
 
-void wxSizer::Add( wxSizer *sizer, int option )
+bool wxSizer::Detach( int index )
 {
-    m_children.Append( new wxSizerItem( sizer, option ) );
+    wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(),
+                 false,
+                 _T("Detach index is out of range") );
+
+    wxSizerItemList::Node *node = m_children.Item( index );
+
+    wxCHECK_MSG( node, false, _T("Failed to find child node") );
+
+    wxSizerItem *item = node->GetData();
+
+    if( item->IsSizer() )
+        item->DetachSizer();
+    else if( item->IsWindow() )
+        item->GetWindow()->SetContainingSizer( NULL );
+
+    return m_children.DeleteNode( node );
 }
 
-void wxSizer::Add( int width, int height, int option )
+void wxSizer::Clear( bool delete_windows )
 {
-    m_children.Append( new wxSizerItem( width, height, option ) );
+    // First clear the ContainingSizer pointers
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->IsWindow())
+            item->GetWindow()->SetContainingSizer( NULL );
+        node = node->GetNext();
+    }
+
+    // Destroy the windows if needed
+    if (delete_windows)
+        DeleteWindows();
+
+    // Now empty the list
+    m_children.Clear();
 }
 
-void wxSizer::Fit( wxWindow *window );
+void wxSizer::DeleteWindows()
 {
-    window->SetSize( GetMinWindowSize( window ) );
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        item->DeleteWindows();
+        node = node->GetNext();
+    }
 }
 
-void wxSizer::SetSizeHints( wxWindow *window );
+wxSize wxSizer::Fit( wxWindow *window )
 {
-    wxSize size( GetMinWindowSize( window ) );
-    window->SetSizeHints( size.x, size.y );
+    wxSize size;
+    if (window->IsTopLevel())
+        size = FitSize( window );
+    else
+        size = GetMinWindowSize( window );
+
+    window->SetSize( size );
+
+    return size;
+}
+
+void wxSizer::FitInside( wxWindow *window )
+{
+    wxSize size;
+    if (window->IsTopLevel())
+        size = VirtualFitSize( window );
+    else
+        size = GetMinClientSize( window );
+
+    window->SetVirtualSize( size );
+}
+
+void wxSizer::Layout()
+{
+    CalcMin();
+    RecalcSizes();
+}
+
+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 );
+
+    window->SetSizeHints( size.x,
+                          size.y,
+                          window->GetMaxWidth(),
+                          window->GetMaxHeight() );
+}
+
+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 min( GetMinSize() );
-    wxSize size( window->GetSize() );
-    wxSize client_size( window->GetClientSize() );
-    return wxSize( min.x+size.x-client_size.x, min.y+size.y-client_size.y ); 
+    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 );
+}
+
+// Return a window size that will fit within the screens dimensions
+wxSize wxSizer::FitSize( wxWindow *window )
+{
+    wxSize size     = GetMinWindowSize( window );
+    wxSize sizeMax  = GetMaxWindowSize( window );
+
+    // Limit the size if sizeMax != wxDefaultSize
+
+    if ( size.x > sizeMax.x && sizeMax.x != -1 )
+        size.x = sizeMax.x;
+    if ( size.y > sizeMax.y && sizeMax.y != -1 )
+        size.y = sizeMax.y;
+
+    return size;
+}
+
+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;
+}
+
+wxSize wxSizer::GetMinClientSize( wxWindow *WXUNUSED(window) )
+{
+    return GetMinSize();  // Already returns client size.
 }
 
-void wxSizer::DoSetDimension( int x, int y, int width, int height )
+wxSize wxSizer::VirtualFitSize( wxWindow *window )
+{
+    wxSize size     = GetMinClientSize( window );
+    wxSize sizeMax  = GetMaxClientSize( window );
+
+    // Limit the size if sizeMax != wxDefaultSize
+
+    if ( size.x > sizeMax.x && sizeMax.x != -1 )
+        size.x = sizeMax.x;
+    if ( size.y > sizeMax.y && sizeMax.y != -1 )
+        size.y = sizeMax.y;
+
+    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;
-    RecalcSizes();
+    Layout();
 }
 
-#endif
-  // __SIZERS_H__
+wxSize wxSizer::GetMinSize()
+{
+    wxSize ret( CalcMin() );
+    if (ret.x < m_minSize.x) ret.x = m_minSize.x;
+    if (ret.y < m_minSize.y) ret.y = m_minSize.y;
+    return ret;
+}
+
+void wxSizer::DoSetMinSize( int width, int height )
+{
+    m_minSize.x = width;
+    m_minSize.y = height;
+}
+
+bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height )
+{
+    wxASSERT_MSG( window, _T("SetMinSize for NULL window") );
+
+    // Is it our immediate child?
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == window)
+        {
+            item->SetInitSize( width, height );
+            return true;
+        }
+        node = node->GetNext();
+    }
+
+    // No?  Search any subsizers we own then
+
+    node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if ( item->GetSizer() &&
+             item->GetSizer()->DoSetItemMinSize( window, width, height ) )
+        {
+            // A child sizer found the requested windw, exit.
+            return true;
+        }
+        node = node->GetNext();
+    }
+
+    return false;
+}
+
+bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height )
+{
+    wxASSERT_MSG( sizer, _T("SetMinSize for NULL sizer") );
+
+    // Is it our immediate child?
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            item->GetSizer()->DoSetMinSize( width, height );
+            return true;
+        }
+        node = node->GetNext();
+    }
+
+    // No?  Search any subsizers we own then
+
+    node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if ( item->GetSizer() &&
+             item->GetSizer()->DoSetItemMinSize( sizer, width, height ) )
+        {
+            // A child found the requested sizer, exit.
+            return true;
+        }
+        node = node->GetNext();
+    }
+
+    return false;
+}
+
+bool wxSizer::DoSetItemMinSize( size_t index, int width, int height )
+{
+    wxSizerItemList::Node   *node = m_children.Item( index );
+
+    wxCHECK_MSG( node, false, _T("Failed to find child node") );
+
+    wxSizerItem     *item = node->GetData();
+
+    if (item->GetSizer())
+    {
+        // Sizers contains the minimal size in them, if not calculated ...
+        item->GetSizer()->DoSetMinSize( width, height );
+    }
+    else
+    {
+        // ... but the minimal size of spacers and windows in stored in them
+        item->SetInitSize( width, height );
+    }
+
+    return true;
+}
+
+void wxSizer::Show( wxWindow *window, bool show )
+{
+    wxASSERT_MSG( window, _T("Show for NULL window") );
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == window)
+        {
+            item->Show( show );
+            break;
+        }
+        node = node->GetNext();
+    }
+}
+
+void wxSizer::Show( wxSizer *sizer, bool show )
+{
+    wxASSERT_MSG( sizer, _T("Show for NULL sizer") );
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            item->Show( show );
+            break;
+        }
+        node = node->GetNext();
+    }
+}
+
+void wxSizer::Show( size_t index, bool show )
+{
+    wxCHECK_RET( index < m_children.GetCount(),
+                 _T("Show index is out of range") );
+
+    m_children.Item( index )->GetData()->Show( show );
+}
+
+void wxSizer::ShowItems( bool show )
+{
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        node->GetData()->Show( show );
+        node = node->GetNext();
+    }
+}
+
+bool wxSizer::IsShown( wxWindow *window ) const
+{
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetWindow() == window)
+        {
+            return item->IsShown();
+        }
+        node = node->GetNext();
+    }
+
+    wxFAIL_MSG( _T("IsShown failed to find sizer item") );
+
+    return false;
+}
+
+bool wxSizer::IsShown( wxSizer *sizer ) const
+{
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->GetSizer() == sizer)
+        {
+            return item->IsShown();
+        }
+        node = node->GetNext();
+    }
+
+    wxFAIL_MSG( _T("IsShown failed to find sizer item") );
+
+    return false;
+}
+
+bool wxSizer::IsShown( size_t index ) const
+{
+    wxCHECK_MSG( index < m_children.GetCount(),
+                 false,
+                 _T("IsShown index is out of range") );
+
+    return m_children.Item( index )->GetData()->IsShown();
+}
+
+
+//---------------------------------------------------------------------------
+// wxGridSizer
+//---------------------------------------------------------------------------
+
+wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
+    : m_rows( rows )
+    , m_cols( cols )
+    , m_vgap( vgap )
+    , m_hgap( hgap )
+{
+}
+
+wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
+    : m_rows( 0 )
+    , m_cols( cols )
+    , m_vgap( vgap )
+    , m_hgap( hgap )
+{
+}
+
+int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const
+{
+    int nitems = m_children.GetCount();
+    if ( nitems)
+    {
+        if ( m_cols )
+        {
+            ncols = m_cols;
+            nrows = (nitems + m_cols - 1) / m_cols;
+        }
+        else if ( m_rows )
+        {
+            ncols = (nitems + m_rows - 1) / m_rows;
+            nrows = m_rows;
+        }
+        else // 0 columns, 0 rows?
+        {
+            wxFAIL_MSG( _T("grid sizer must have either rows or columns fixed") );
+
+            nrows = ncols = 0;
+        }
+    }
+
+    return nitems;
+}
+
+void wxGridSizer::RecalcSizes()
+{
+    int nitems, nrows, ncols;
+    if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 )
+        return;
+
+    wxSize sz( GetSize() );
+    wxPoint pt( GetPosition() );
+
+    int w = (sz.x - (ncols - 1) * m_hgap) / ncols;
+    int h = (sz.y - (nrows - 1) * m_vgap) / nrows;
+
+    int x = pt.x;
+    for (int c = 0; c < ncols; c++)
+    {
+        int y = pt.y;
+        for (int r = 0; r < nrows; r++)
+        {
+            int i = r * ncols + c;
+            if (i < nitems)
+            {
+                wxSizerItemList::Node   *node = m_children.Item( i );
+
+                wxASSERT_MSG( node, _T("Failed to find SizerItemList node") );
+
+                SetItemBounds( node->GetData(), x, y, w, h);
+            }
+            y = y + h + m_vgap;
+        }
+        x = x + w + m_hgap;
+    }
+}
+
+wxSize wxGridSizer::CalcMin()
+{
+    int nitems, nrows, ncols;
+    if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 )
+        return wxSize(10, 10);
+
+    // Find the max width and height for any component
+    int w = 0;
+    int h = 0;
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+        wxSize           sz( item->CalcMin() );
+
+        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 );
+}
+
+void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
+{
+    wxPoint pt( x,y );
+    wxSize sz( item->CalcMin() );
+    int flag = item->GetFlag();
+
+    if ((flag & wxEXPAND) || (flag & wxSHAPED))
+    {
+       sz = wxSize(w, h);
+    }
+    else
+    {
+        if (flag & wxALIGN_CENTER_HORIZONTAL)
+        {
+            pt.x = x + (w - sz.x) / 2;
+        }
+        else if (flag & wxALIGN_RIGHT)
+        {
+            pt.x = x + (w - sz.x);
+        }
+
+        if (flag & wxALIGN_CENTER_VERTICAL)
+        {
+            pt.y = y + (h - sz.y) / 2;
+        }
+        else if (flag & wxALIGN_BOTTOM)
+        {
+            pt.y = y + (h - sz.y);
+        }
+    }
+
+    item->SetDimension(pt, sz);
+}
+
+//---------------------------------------------------------------------------
+// wxFlexGridSizer
+//---------------------------------------------------------------------------
+
+wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap )
+               : wxGridSizer( rows, cols, vgap, hgap ),
+                 m_flexDirection(wxBOTH),
+                 m_growMode(wxFLEX_GROWMODE_SPECIFIED)
+{
+}
+
+wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap )
+               : wxGridSizer( cols, vgap, hgap ),
+                 m_flexDirection(wxBOTH),
+                 m_growMode(wxFLEX_GROWMODE_SPECIFIED)
+{
+}
+
+wxFlexGridSizer::~wxFlexGridSizer()
+{
+}
+
+void wxFlexGridSizer::RecalcSizes()
+{
+    int nitems, nrows, ncols;
+    if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 )
+        return;
+
+    wxSize sz( GetSize() );
+    wxSize minsz( CalcMin() );
+    wxPoint pt( GetPosition() );
+    int    delta;
+    size_t idx, num;
+    wxArrayInt temp;
+    wxArrayInt temp_proportions;
+    int sum_proportions = 0;
+    int growable_space = 0;
+
+    // what to do with the rows? by default, resize them proportionally
+    if ( (m_flexDirection & wxVERTICAL) ||
+            (m_growMode == wxFLEX_GROWMODE_SPECIFIED) )
+    {
+        // Transfer only those rows into temp which exist in the sizer
+        // ignoring the superfluous ones. This prevents a segfault when
+        // calling AddGrowableRow( 3 ) if the sizer only has 2 rows.
+        for (idx = 0; idx < m_growableRows.GetCount(); idx++)
+        {
+            if (m_growableRows[idx] < nrows)
+            {
+                temp.Add( m_growableRows[idx] );
+                temp_proportions.Add( m_growableRowsProportions[idx] );
+                sum_proportions += m_growableRowsProportions[idx];
+                growable_space += m_rowHeights[ temp[idx] ];
+            }
+        }
+
+        num = temp.GetCount();
+
+        if ((num > 0) && (sz.y > minsz.y))
+        {
+            for (idx = 0; idx < num; idx++)
+            {
+                delta = (sz.y - minsz.y);
+                if (sum_proportions == 0)
+                    delta = (delta/num) + m_rowHeights[ temp[idx] ];
+                else
+                    delta = ((delta+growable_space)*temp_proportions[idx])/
+                                                     sum_proportions;
+                m_rowHeights[ temp[idx] ] = delta;
+            }
+        }
+        temp.Empty();
+        temp_proportions.Empty();
+		sum_proportions = 0;
+		growable_space = 0;
+    }
+    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;
+    }
+
+    // the same logic as above but for the columns
+    if ( (m_flexDirection & wxHORIZONTAL) ||
+            (m_growMode == wxFLEX_GROWMODE_SPECIFIED) )
+    {
+        // See above
+        for (idx = 0; idx < m_growableCols.GetCount(); idx++)
+        {
+            if (m_growableCols[idx] < ncols)
+            {
+                temp.Add( m_growableCols[idx] );
+                temp_proportions.Add( m_growableColsProportions[idx] );
+                sum_proportions += m_growableColsProportions[idx];
+                growable_space += m_colWidths[idx];
+            }
+        }
+
+        num = temp.GetCount();
+
+        if ((num > 0) && (sz.x > minsz.x))
+        {
+            for (idx = 0; idx < num; idx++)
+            {
+                delta = (sz.x - minsz.x);
+                if (sum_proportions == 0)
+                    delta = (delta/num) + m_colWidths[ temp[idx] ];
+		else
+                    delta = ((delta+growable_space)*temp_proportions[idx])/
+                                                     sum_proportions;
+                m_colWidths[ temp[idx] ] = delta;
+            }
+        }
+    }
+    else if ( (m_growMode == wxFLEX_GROWMODE_ALL) && (sz.x > minsz.x) )
+    {
+        for ( int col=0; col < ncols; ++col )
+            m_colWidths[ col ] = sz.x / ncols;
+    }
+
+    sz = wxSize( pt.x + sz.x, pt.y + sz.y );
+
+    int x = pt.x;
+    for (int c = 0; c < ncols; c++)
+    {
+        int y = pt.y;
+        for (int r = 0; r < nrows; r++)
+        {
+            int i = r * ncols + c;
+            if (i < nitems)
+            {
+                wxSizerItemList::Node   *node = m_children.Item( i );
+
+                wxASSERT_MSG( node, _T("Failed to find node") );
+
+                int w = wxMax( 0, wxMin( m_colWidths[c], sz.x - x ) );
+                int h = wxMax( 0, wxMin( m_rowHeights[r], sz.y - y ) );
+
+                SetItemBounds( node->GetData(), x, y, w, h);
+            }
+            y = y + m_rowHeights[r] + m_vgap;
+        }
+        x = x + m_colWidths[c] + m_hgap;
+    }
+}
+
+wxSize wxFlexGridSizer::CalcMin()
+{
+    int     nrows,
+            ncols;
+    size_t  i, s;
+
+    if ( !CalcRowsCols(nrows, ncols) )
+        return wxSize(10, 10);
+
+    // We have to clear the old sizes out if any item has wxADJUST_MINSIZE
+    // set on it.  Its probably quicker to just always do it than test for
+    // that though.  At least do it before resizing the arrays, SetCount will
+    // initialise new elements to zero.
+    for( s = m_rowHeights.GetCount(), i = 0; i < s; ++i )
+        m_rowHeights[ i ] = 0;
+
+    for( s = m_colWidths.GetCount(), i = 0; i < s; ++i )
+        m_colWidths[ i ] = 0;
+
+    m_rowHeights.SetCount(nrows);
+    m_colWidths.SetCount(ncols);
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+
+    i = 0;
+    while (node)
+    {
+        wxSizerItem    *item = node->GetData();
+        wxSize          sz( item->CalcMin() );
+        int             row = i / ncols;
+        int             col = i % ncols;
+
+        m_rowHeights[ row ] = wxMax( sz.y, m_rowHeights[ row ] );
+        m_colWidths[ col ] = wxMax( sz.x, m_colWidths[ col ] );
+
+        node = node->GetNext();
+        i++;
+    }
+
+    // the logic above works when we resize flexibly in both directions but
+    // maybe this is not the case
+    if ( m_flexDirection != wxBOTH )
+    {
+        // select the array corresponding to the direction in which we do *not*
+        // resize flexibly
+        wxArrayInt& array = m_flexDirection == wxVERTICAL ? m_colWidths
+                                                          : m_rowHeights;
+
+        const int count = array.GetCount();
+
+        // find the largest value in this array
+        int n,
+            largest = 0;
+        for ( n = 0; n < count; ++n )
+        {
+            if ( array[n] > largest )
+                largest = array[n];
+        }
+
+        // and now fill it with the largest value
+        for ( n = 0; n < count; ++n )
+        {
+            array[n] = largest;
+        }
+    }
+
+
+    int width = 0;
+    for (int col = 0; col < ncols; col++)
+        width += m_colWidths[ col ];
+
+    int height = 0;
+    for (int row = 0; row < nrows; row++)
+        height += m_rowHeights[ row ];
+
+    return wxSize( width +  (ncols-1) * m_hgap,
+                   height + (nrows-1) * m_vgap);
+}
+
+void wxFlexGridSizer::AddGrowableRow( size_t idx, int proportion )
+{
+    m_growableRows.Add( idx );
+    m_growableRowsProportions.Add( proportion );
+}
+
+void wxFlexGridSizer::RemoveGrowableRow( size_t WXUNUSED(idx) )
+{
+}
+
+void wxFlexGridSizer::AddGrowableCol( size_t idx, int proportion )
+{
+    m_growableCols.Add( idx );
+    m_growableColsProportions.Add( proportion );
+}
+
+void wxFlexGridSizer::RemoveGrowableCol( size_t WXUNUSED(idx) )
+{
+}
+
+//---------------------------------------------------------------------------
+// wxBoxSizer
+//---------------------------------------------------------------------------
+
+wxBoxSizer::wxBoxSizer( int orient )
+    : m_orient( orient )
+{
+}
+
+void wxBoxSizer::RecalcSizes()
+{
+    if (m_children.GetCount() == 0)
+        return;
+
+    int delta = 0;
+    int extra = 0;
+    if (m_stretchable)
+    {
+        if (m_orient == wxHORIZONTAL)
+        {
+            delta = (m_size.x - m_fixedWidth) / m_stretchable;
+            extra = (m_size.x - m_fixedWidth) % m_stretchable;
+        }
+        else
+        {
+            delta = (m_size.y - m_fixedHeight) / m_stretchable;
+            extra = (m_size.y - m_fixedHeight) % m_stretchable;
+        }
+    }
+
+    wxPoint pt( m_position );
+
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->IsShown())
+        {
+            int weight = 1;
+            if (item->GetProportion())
+                weight = item->GetProportion();
+
+            wxSize size( item->CalcMin() );
+
+            if (m_orient == wxVERTICAL)
+            {
+                wxCoord height = size.y;
+                if (item->GetProportion())
+                {
+                    height = (delta * weight) + extra;
+                    extra = 0; // only the first item will get the remainder as extra size
+                }
+
+                wxPoint child_pos( pt );
+                wxSize  child_size( wxSize( size.x, height) );
+
+                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;
+
+                item->SetDimension( child_pos, child_size );
+
+                pt.y += height;
+            }
+            else
+            {
+                wxCoord width = size.x;
+                if (item->GetProportion())
+                {
+                    width = (delta * weight) + extra;
+                    extra = 0; // only the first item will get the remainder as extra size
+                }
+
+                wxPoint child_pos( pt );
+                wxSize  child_size( wxSize(width, size.y) );
+
+                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;
+
+                item->SetDimension( child_pos, child_size );
+
+                pt.x += width;
+            }
+        }
+
+        node = node->GetNext();
+    }
+}
+
+wxSize wxBoxSizer::CalcMin()
+{
+    if (m_children.GetCount() == 0)
+        return wxSize(10,10);
+
+    m_stretchable = 0;
+    m_minWidth = 0;
+    m_minHeight = 0;
+    m_fixedWidth = 0;
+    m_fixedHeight = 0;
+
+    // Find how long each stretch unit needs to be
+    int                      stretchSize = 1;
+    wxSizerItemList::Node   *node = m_children.GetFirst();
+
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->IsShown() && item->GetProportion() != 0)
+        {
+            int stretch = item->GetProportion();
+            wxSize size( item->CalcMin() );
+            int sizePerStretch;
+            // Integer division rounded up is (a + b - 1) / b
+            if (m_orient == wxHORIZONTAL)
+                sizePerStretch = ( size.x + stretch - 1 ) / stretch;
+            else
+                sizePerStretch = ( size.y + stretch - 1 ) / stretch;
+            if (sizePerStretch > stretchSize)
+                stretchSize = sizePerStretch;
+        }
+        node = node->GetNext();
+    }
+
+    // Calculate overall minimum size
+    node = m_children.GetFirst();
+    while (node)
+    {
+        wxSizerItem     *item = node->GetData();
+
+        if (item->IsShown())
+        {
+            m_stretchable += item->GetProportion();
+
+            wxSize size( item->CalcMin() );
+            if (item->GetProportion() != 0)
+            {
+                if (m_orient == wxHORIZONTAL)
+                    size.x = stretchSize * item->GetProportion();
+                else
+                    size.y = stretchSize * item->GetProportion();
+            }
+
+            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 (item->GetProportion() == 0)
+            {
+                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 );
+                }
+            }
+        }
+        node = node->GetNext();
+    }
+
+    return wxSize( m_minWidth, m_minHeight );
+}
+
+//---------------------------------------------------------------------------
+// wxStaticBoxSizer
+//---------------------------------------------------------------------------
+
+#if wxUSE_STATBOX
+
+wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )
+    : wxBoxSizer( orient )
+    , m_staticBox( box )
+{
+    wxASSERT_MSG( box, wxT("wxStaticBoxSizer needs a static box") );
+}
+
+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
+#ifdef __WXGTK__
+    if ( box->GetLabel().IsEmpty() )
+        *borderTop = 5;
+    else
+#endif // __WXGTK__
+        *borderTop = box->GetCharHeight();
+
+    *borderOther = 5;
+}
+
+void wxStaticBoxSizer::RecalcSizes()
+{
+    int top_border, other_border;
+    GetStaticBoxBorders(m_staticBox, &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;
+
+    wxBoxSizer::RecalcSizes();
+
+    m_position = old_pos;
+    m_size = old_size;
+}
+
+wxSize wxStaticBoxSizer::CalcMin()
+{
+    int top_border, other_border;
+    GetStaticBoxBorders(m_staticBox, &top_border, &other_border);
+
+    wxSize ret( wxBoxSizer::CalcMin() );
+    ret.x += 2*other_border;
+    ret.y += other_border + top_border;
+
+    return ret;
+}
+
+#endif // wxUSE_STATBOX
+
+//---------------------------------------------------------------------------
+// wxNotebookSizer
+//---------------------------------------------------------------------------
+
+#if wxUSE_NOTEBOOK
+
+wxNotebookSizer::wxNotebookSizer( wxNotebook *nb )
+    : m_notebook( nb )
+{
+    wxASSERT_MSG( nb, wxT("wxNotebookSizer needs a notebook") );
+}
+
+void wxNotebookSizer::RecalcSizes()
+{
+    m_notebook->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
+}
+
+wxSize wxNotebookSizer::CalcMin()
+{
+    wxSize sizeBorder = m_notebook->CalcSizeFromPage(wxSize(0, 0));
+
+    sizeBorder.x += 5;
+    sizeBorder.y += 5;
+
+    if (m_notebook->GetChildren().GetCount() == 0)
+    {
+        return wxSize(sizeBorder.x + 10, sizeBorder.y + 10);
+    }
+
+    int maxX = 0;
+    int maxY = 0;
+
+    wxWindowList::Node *node = m_notebook->GetChildren().GetFirst();
+    while (node)
+    {
+        wxWindow *item = node->GetData();
+        wxSizer *itemsizer = item->GetSizer();
+
+        if (itemsizer)
+        {
+            wxSize subsize( itemsizer->CalcMin() );
+
+            if (subsize.x > maxX)
+                maxX = subsize.x;
+            if (subsize.y > maxY)
+                maxY = subsize.y;
+        }
+
+        node = node->GetNext();
+    }
+
+    return wxSize( maxX, maxY ) + sizeBorder;
+}
+
+#endif // wxUSE_NOTEBOOK
+
+// vi:sts=4:sw=4:et