X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/61fef19b852d426f5b00b60de083539b9ba0f76c..987263fe1974dac46a38d6d623557ccf89a25992:/src/generic/listctrl.cpp

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index ac046f88fd..dc42f4b08a 100644
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -23,7 +23,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "listctrl.h"
     #pragma implementation "listctrlbase.h"
 #endif
@@ -103,8 +103,8 @@ DEFINE_EVENT_TYPE(wxEVT_COMMAND_LIST_CACHE_HINT)
 // constants
 // ----------------------------------------------------------------------------
 
-// the height of the header window (FIXME: should depend on its font!)
-static const int HEADER_HEIGHT = 23;
+// // the height of the header window (FIXME: should depend on its font!)
+// static const int HEADER_HEIGHT = 23;
 
 // the scrollbar units
 static const int SCROLL_UNIT_X = 15;
@@ -117,10 +117,17 @@ static const int LINE_SPACING = 0;
 static const int EXTRA_WIDTH = 3;
 static const int EXTRA_HEIGHT = 4;
 
+// margin between the window and the items
+static const int EXTRA_BORDER_X = 2;
+static const int EXTRA_BORDER_Y = 2;
+
 // offset for the header window
 static const int HEADER_OFFSET_X = 1;
 static const int HEADER_OFFSET_Y = 1;
 
+// margin between rows of icons in [small] icon view
+static const int MARGIN_BETWEEN_ROWS = 6;
+
 // when autosizing the columns, add some slack
 static const int AUTOSIZE_COL_MARGIN = 10;
 
@@ -275,6 +282,18 @@ public:
 
         // the part to be highlighted
         wxRect m_rectHighlight;
+
+        // extend all our rects to be centered inside theo ne of given width
+        void ExtendWidth(wxCoord w)
+        {
+            wxASSERT_MSG( m_rectAll.width <= w,
+                            _T("width can only be increased") );
+
+            m_rectAll.width = w;
+            m_rectLabel.x = m_rectAll.x + (w - m_rectLabel.width)/2;
+            m_rectIcon.x = m_rectAll.x + (w - m_rectIcon.width)/2;
+            m_rectHighlight.x = m_rectAll.x + (w - m_rectHighlight.width)/2;
+        }
     } *m_gi;
 
     // is this item selected? [NB: not used in virtual mode]
@@ -305,7 +324,7 @@ public:
     void CalculateSize( wxDC *dc, int spacing );
 
     // remember the position this line appears at
-    void SetPosition( int x, int y,  int window_width, int spacing );
+    void SetPosition( int x, int y, int spacing );
 
     // wxListCtrl API
 
@@ -616,6 +635,7 @@ public:
     void SetItemState( long item, long state, long stateMask );
     int GetItemState( long item, long stateMask ) const;
     void GetItemRect( long index, wxRect &rect ) const;
+    wxRect GetViewRect() const;
     bool GetItemPosition( long item, wxPoint& pos ) const;
     int GetSelectedItemCount() const;
 
@@ -723,8 +743,6 @@ public:
     bool                 m_dirty;
 
     wxColour            *m_highlightColour;
-    int                  m_xScroll,
-                         m_yScroll;
     wxImageListType         *m_small_image_list;
     wxImageListType         *m_normal_image_list;
     int                  m_small_spacing;
@@ -752,9 +770,6 @@ protected:
     // common part of all ctors
     void Init();
 
-    // intiialize m_[xy]Scroll
-    void InitScrolling();
-
     // get the line data for the given index
     wxListLineData *GetLine(size_t n) const
     {
@@ -1112,96 +1127,93 @@ void wxListLineData::CalculateSize( wxDC *dc, int spacing )
 
     wxListItemData *item = node->GetData();
 
+    wxString s;
+    wxCoord lw, lh;
+
     switch ( GetMode() )
     {
         case wxLC_ICON:
         case wxLC_SMALL_ICON:
-            {
-                m_gi->m_rectAll.width = spacing;
+            m_gi->m_rectAll.width = spacing;
 
-                wxString s = item->GetText();
-
-                wxCoord lw, lh;
-                if ( s.empty() )
-                {
-                    lh =
-                    m_gi->m_rectLabel.width =
-                    m_gi->m_rectLabel.height = 0;
-                }
-                else // has label
-                {
-                    dc->GetTextExtent( s, &lw, &lh );
-                    if (lh < SCROLL_UNIT_Y)
-                        lh = SCROLL_UNIT_Y;
-                    lw += EXTRA_WIDTH;
-                    lh += EXTRA_HEIGHT;
-
-                    m_gi->m_rectAll.height = spacing + lh;
-                    if (lw > spacing)
-                        m_gi->m_rectAll.width = lw;
-
-                    m_gi->m_rectLabel.width = lw;
-                    m_gi->m_rectLabel.height = lh;
-                }
-
-                if (item->HasImage())
-                {
-                    int w, h;
-                    m_owner->GetImageSize( item->GetImage(), w, h );
-                    m_gi->m_rectIcon.width = w + 8;
-                    m_gi->m_rectIcon.height = h + 8;
-
-                    if ( m_gi->m_rectIcon.width > m_gi->m_rectAll.width )
-                        m_gi->m_rectAll.width = m_gi->m_rectIcon.width;
-                    if ( m_gi->m_rectIcon.height + lh > m_gi->m_rectAll.height - 4 )
-                        m_gi->m_rectAll.height = m_gi->m_rectIcon.height + lh + 4;
-                }
+            s = item->GetText();
 
-                if ( item->HasText() )
-                {
-                    m_gi->m_rectHighlight.width = m_gi->m_rectLabel.width;
-                    m_gi->m_rectHighlight.height = m_gi->m_rectLabel.height;
-                }
-                else // no text, highlight the icon
-                {
-                    m_gi->m_rectHighlight.width = m_gi->m_rectIcon.width;
-                    m_gi->m_rectHighlight.height = m_gi->m_rectIcon.height;
-                }
+            if ( s.empty() )
+            {
+                lh =
+                m_gi->m_rectLabel.width =
+                m_gi->m_rectLabel.height = 0;
             }
-            break;
-
-        case wxLC_LIST:
+            else // has label
             {
-                wxString s = item->GetTextForMeasuring();
-
-                wxCoord lw,lh;
                 dc->GetTextExtent( s, &lw, &lh );
                 if (lh < SCROLL_UNIT_Y)
                     lh = SCROLL_UNIT_Y;
                 lw += EXTRA_WIDTH;
                 lh += EXTRA_HEIGHT;
 
+                m_gi->m_rectAll.height = spacing + lh;
+                if (lw > spacing)
+                    m_gi->m_rectAll.width = lw;
+
                 m_gi->m_rectLabel.width = lw;
                 m_gi->m_rectLabel.height = lh;
+            }
 
-                m_gi->m_rectAll.width = lw;
-                m_gi->m_rectAll.height = lh;
+            if (item->HasImage())
+            {
+                int w, h;
+                m_owner->GetImageSize( item->GetImage(), w, h );
+                m_gi->m_rectIcon.width = w + 8;
+                m_gi->m_rectIcon.height = h + 8;
+
+                if ( m_gi->m_rectIcon.width > m_gi->m_rectAll.width )
+                    m_gi->m_rectAll.width = m_gi->m_rectIcon.width;
+                if ( m_gi->m_rectIcon.height + lh > m_gi->m_rectAll.height - 4 )
+                    m_gi->m_rectAll.height = m_gi->m_rectIcon.height + lh + 4;
+            }
 
-                if (item->HasImage())
-                {
-                    int w, h;
-                    m_owner->GetImageSize( item->GetImage(), w, h );
-                    m_gi->m_rectIcon.width = w;
-                    m_gi->m_rectIcon.height = h;
-
-                    m_gi->m_rectAll.width += 4 + w;
-                    if (h > m_gi->m_rectAll.height)
-                        m_gi->m_rectAll.height = h;
-                }
+            if ( item->HasText() )
+            {
+                m_gi->m_rectHighlight.width = m_gi->m_rectLabel.width;
+                m_gi->m_rectHighlight.height = m_gi->m_rectLabel.height;
+            }
+            else // no text, highlight the icon
+            {
+                m_gi->m_rectHighlight.width = m_gi->m_rectIcon.width;
+                m_gi->m_rectHighlight.height = m_gi->m_rectIcon.height;
+            }
+            break;
+
+        case wxLC_LIST:
+            s = item->GetTextForMeasuring();
+
+            dc->GetTextExtent( s, &lw, &lh );
+            if (lh < SCROLL_UNIT_Y)
+                lh = SCROLL_UNIT_Y;
+            lw += EXTRA_WIDTH;
+            lh += EXTRA_HEIGHT;
+
+            m_gi->m_rectLabel.width = lw;
+            m_gi->m_rectLabel.height = lh;
 
-                m_gi->m_rectHighlight.width = m_gi->m_rectAll.width;
-                m_gi->m_rectHighlight.height = m_gi->m_rectAll.height;
+            m_gi->m_rectAll.width = lw;
+            m_gi->m_rectAll.height = lh;
+
+            if (item->HasImage())
+            {
+                int w, h;
+                m_owner->GetImageSize( item->GetImage(), w, h );
+                m_gi->m_rectIcon.width = w;
+                m_gi->m_rectIcon.height = h;
+
+                m_gi->m_rectAll.width += 4 + w;
+                if (h > m_gi->m_rectAll.height)
+                    m_gi->m_rectAll.height = h;
             }
+
+            m_gi->m_rectHighlight.width = m_gi->m_rectAll.width;
+            m_gi->m_rectHighlight.height = m_gi->m_rectAll.height;
             break;
 
         case wxLC_REPORT:
@@ -1213,9 +1225,7 @@ void wxListLineData::CalculateSize( wxDC *dc, int spacing )
     }
 }
 
-void wxListLineData::SetPosition( int x, int y,
-                                  int WXUNUSED(window_width),
-                                  int spacing )
+void wxListLineData::SetPosition( int x, int y, int spacing )
 {
     wxListItemDataList::compatibility_iterator node = m_items.GetFirst();
     wxCHECK_RET( node, _T("no subitems at all??") );
@@ -1445,20 +1455,31 @@ void wxListLineData::Draw( wxDC *dc )
         dc->DrawRectangle( m_gi->m_rectHighlight );
     }
 
+    // just for debugging to better see where the items are
+#if 0
+    dc->SetPen(*wxRED_PEN);
+    dc->SetBrush(*wxTRANSPARENT_BRUSH);
+    dc->DrawRectangle( m_gi->m_rectAll );
+    dc->SetPen(*wxGREEN_PEN);
+    dc->DrawRectangle( m_gi->m_rectIcon );
+#endif // 0
+
     wxListItemData *item = node->GetData();
     if (item->HasImage())
     {
-        wxRect rectIcon = m_gi->m_rectIcon;
-        m_owner->DrawImage( item->GetImage(), dc,
-                            rectIcon.x, rectIcon.y );
+        // centre the image inside our rectangle, this looks nicer when items
+        // ae aligned in a row
+        const wxRect& rectIcon = m_gi->m_rectIcon;
+
+        m_owner->DrawImage(item->GetImage(), dc, rectIcon.x, rectIcon.y);
     }
 
     if (item->HasText())
     {
-        wxRect rectLabel = m_gi->m_rectLabel;
+        const wxRect& rectLabel = m_gi->m_rectLabel;
 
         wxDCClipper clipper(*dc, rectLabel);
-        dc->DrawText( item->GetText(), rectLabel.x, rectLabel.y );
+        dc->DrawText(item->GetText(), rectLabel.x, rectLabel.y);
     }
 }
 
@@ -2083,11 +2104,11 @@ void wxListTextCtrl::OnKillFocus( wxFocusEvent &event )
     {
         // We must finish regardless of success, otherwise we'll get focus problems
         Finish();
-    
+
         if ( !AcceptChanges() )
             m_owner->OnRenameCancelled( m_itemEdited );
     }
-        
+
     event.Skip();
 }
 
@@ -2138,29 +2159,12 @@ void wxListMainWindow::Init()
     m_freezeCount = 0;
 }
 
-void wxListMainWindow::InitScrolling()
-{
-    if ( HasFlag(wxLC_REPORT) )
-    {
-        m_xScroll = SCROLL_UNIT_X;
-        m_yScroll = SCROLL_UNIT_Y;
-    }
-    else
-    {
-        m_xScroll = SCROLL_UNIT_Y;
-        m_yScroll = 0;
-    }
-}
-
 wxListMainWindow::wxListMainWindow()
 {
     Init();
 
     m_highlightBrush =
     m_highlightUnfocusedBrush = (wxBrush *) NULL;
-
-    m_xScroll =
-    m_yScroll = 0;
 }
 
 wxListMainWindow::wxListMainWindow( wxWindow *parent,
@@ -2195,8 +2199,7 @@ wxListMainWindow::wxListMainWindow( wxWindow *parent,
     wxSize sz = size;
     sz.y = 25;
 
-    InitScrolling();
-    SetScrollbars( m_xScroll, m_yScroll, 0, 0, 0, 0 );
+    SetScrollbars( SCROLL_UNIT_X, SCROLL_UNIT_Y, 0, 0, 0, 0 );
 
     SetBackgroundColour( wxSystemSettings::GetColour( wxSYS_COLOUR_LISTBOX ) );
 }
@@ -2835,19 +2838,22 @@ bool wxListMainWindow::OnRenameAccept(size_t itemEdit, const wxString& value)
 # pragma message disable initnotreach
 #endif
 
-void wxListMainWindow::OnRenameCancelled(size_t itemEdit)
+void wxListMainWindow::OnRenameCancelled(size_t WXUNUSED(itemEdit))
 {
     // wxMSW seems not to notify the program about
     // cancelled label edits.
     return;
 
+  #if 0
+    // above unconditional return cause warning about not reachable code
+
     // let owner know that the edit was cancelled
     wxListEvent le( wxEVT_COMMAND_LIST_END_LABEL_EDIT, GetParent()->GetId() );
-    
+
     // These only exist for wxTreeCtrl, which should probably be changed
     // le.m_editCancelled = TRUE;
     // le.m_label = wxEmptyString;
-    
+
     le.SetEventObject( GetParent() );
     le.m_itemIndex = itemEdit;
 
@@ -2857,6 +2863,7 @@ void wxListMainWindow::OnRenameCancelled(size_t itemEdit)
     data->GetItem( 0, le.m_item );
 
     GetEventHandler()->ProcessEvent( le );
+  #endif
 }
 #ifdef __VMS__
 # pragma message enable initnotreach
@@ -3047,8 +3054,8 @@ void wxListMainWindow::MoveToItem(size_t item)
     int client_w, client_h;
     GetClientSize( &client_w, &client_h );
 
-    int view_x = m_xScroll*GetScrollPos( wxHORIZONTAL );
-    int view_y = m_yScroll*GetScrollPos( wxVERTICAL );
+    int view_x = SCROLL_UNIT_X*GetScrollPos( wxHORIZONTAL );
+    int view_y = SCROLL_UNIT_Y*GetScrollPos( wxVERTICAL );
 
     if ( HasFlag(wxLC_REPORT) )
     {
@@ -3057,16 +3064,16 @@ void wxListMainWindow::MoveToItem(size_t item)
         ResetVisibleLinesRange();
 
         if (rect.y < view_y )
-            Scroll( -1, rect.y/m_yScroll );
+            Scroll( -1, rect.y/SCROLL_UNIT_Y );
         if (rect.y+rect.height+5 > view_y+client_h)
-            Scroll( -1, (rect.y+rect.height-client_h+SCROLL_UNIT_Y)/m_yScroll );
+            Scroll( -1, (rect.y+rect.height-client_h+SCROLL_UNIT_Y)/SCROLL_UNIT_Y );
     }
     else // !report
     {
         if (rect.x-view_x < 5)
-            Scroll( (rect.x-5)/m_xScroll, -1 );
+            Scroll( (rect.x-5)/SCROLL_UNIT_X, -1 );
         if (rect.x+rect.width-5 > view_x+client_w)
-            Scroll( (rect.x+rect.width-client_w+SCROLL_UNIT_X)/m_xScroll, -1 );
+            Scroll( (rect.x+rect.width-client_w+SCROLL_UNIT_X)/SCROLL_UNIT_X, -1 );
     }
 }
 
@@ -3773,11 +3780,58 @@ int wxListMainWindow::GetSelectedItemCount() const
 // item position/size
 // ----------------------------------------------------------------------------
 
+wxRect wxListMainWindow::GetViewRect() const
+{
+    wxASSERT_MSG( !HasFlag(wxLC_REPORT | wxLC_LIST),
+                    _T("wxListCtrl::GetViewRect() only works in icon mode") );
+
+    // we need to find the longest/tallest label
+    wxCoord xMax = 0,
+            yMax = 0;
+    const int count = GetItemCount();
+    if ( count )
+    {
+        for ( int i = 0; i < count; i++ )
+        {
+            wxRect r;
+            GetItemRect(i, r);
+
+            wxCoord x = r.GetRight(),
+                    y = r.GetBottom();
+
+            if ( x > xMax )
+                xMax = x;
+            if ( y > yMax )
+                yMax = y;
+        }
+    }
+
+    // some fudge needed to make it look prettier
+    xMax += 2*EXTRA_BORDER_X;
+    yMax += 2*EXTRA_BORDER_Y;
+
+    // account for the scrollbars if necessary
+    const wxSize sizeAll = GetClientSize();
+    if ( xMax > sizeAll.x )
+        yMax += wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
+    if ( yMax > sizeAll.y )
+        xMax += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
+
+    return wxRect(0, 0, xMax, yMax);
+}
+
 void wxListMainWindow::GetItemRect( long index, wxRect &rect ) const
 {
     wxCHECK_RET( index >= 0 && (size_t)index < GetItemCount(),
                  _T("invalid index in GetItemRect") );
 
+    // ensure that we're laid out, otherwise we could return nonsense
+    if ( m_dirty )
+    {
+        wxConstCast(this, wxListMainWindow)->
+            RecalculatePositions(TRUE /* no refresh */);
+    }
+
     rect = GetLineRect((size_t)index);
 
     CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y);
@@ -3803,6 +3857,8 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
     wxClientDC dc( this );
     dc.SetFont( GetFont() );
 
+    const size_t count = GetItemCount();
+
     int iconSpacing;
     if ( HasFlag(wxLC_ICON) )
         iconSpacing = m_normal_spacing;
@@ -3833,104 +3889,170 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
 
     if ( HasFlag(wxLC_REPORT) )
     {
-        // all lines have the same height
+        // all lines have the same height and we scroll one line per step
         int lineHeight = GetLineHeight();
 
-        // scroll one line per step
-        m_yScroll = lineHeight;
-
-        size_t lineCount = GetItemCount();
-        int entireHeight = lineCount*lineHeight + LINE_SPACING;
+        int entireHeight = count*lineHeight + LINE_SPACING;
 
         m_linesPerPage = clientHeight / lineHeight;
 
         ResetVisibleLinesRange();
 
-        SetScrollbars( m_xScroll, m_yScroll,
-                       GetHeaderWidth() / m_xScroll,
-                       (entireHeight + m_yScroll - 1)/m_yScroll,
+        SetScrollbars( SCROLL_UNIT_X, lineHeight,
+                       GetHeaderWidth() / SCROLL_UNIT_X,
+                       (entireHeight + lineHeight - 1) / lineHeight,
                        GetScrollPos(wxHORIZONTAL),
                        GetScrollPos(wxVERTICAL),
                        TRUE );
     }
     else // !report
     {
-        // at first we try without any scrollbar. if the items don't
-        // fit into the window, we recalculate after subtracting an
-        // approximated 15 pt for the horizontal scrollbar
-
-        int entireWidth = 0;
-
-        for (int tries = 0; tries < 2; tries++)
+        // we have 3 different layout strategies: either layout all items
+        // horizontally/vertically (wxLC_ALIGN_XXX styles explicitly given) or
+        // to arrange them in top to bottom, left to right (don't ask me why
+        // not the other way round...) order
+        if ( HasFlag(wxLC_ALIGN_LEFT | wxLC_ALIGN_TOP) )
         {
-            // We start with 4 for the border around all items
-            entireWidth = 4;
-
-            if (tries == 1)
-            {
-                // Now we have decided that the items do not fit into the
-                // client area. Unfortunately, wxWindows sometimes thinks
-                // that it does fit and therefore NO horizontal scrollbar
-                // is inserted. This looks ugly, so we fudge here and make
-                // the calculated width bigger than was actually has been
-                // calculated. This ensures that wxScrolledWindows puts
-                // a scrollbar at the bottom of its client area.
-                entireWidth += SCROLL_UNIT_X;
-            }
+            int x = EXTRA_BORDER_X;
+            int y = EXTRA_BORDER_Y;
 
-            // Start at 2,2 so the text does not touch the border
-            int x = 2;
-            int y = 2;
-            int maxWidth = 0;
-            m_linesPerPage = 0;
-            int currentlyVisibleLines = 0;
+            wxCoord widthMax = 0;
 
-            size_t count = GetItemCount();
-            for (size_t i = 0; i < count; i++)
+            size_t i;
+            for ( i = 0; i < count; i++ )
             {
-                currentlyVisibleLines++;
                 wxListLineData *line = GetLine(i);
                 line->CalculateSize( &dc, iconSpacing );
-                line->SetPosition( x, y, clientWidth, iconSpacing );  // Why clientWidth? (FIXME)
+                line->SetPosition( x, y, iconSpacing );
 
                 wxSize sizeLine = GetLineSize(i);
 
-                if ( maxWidth < sizeLine.x )
-                    maxWidth = sizeLine.x;
+                if ( HasFlag(wxLC_ALIGN_TOP) )
+                {
+                    if ( sizeLine.x > widthMax )
+                        widthMax = sizeLine.x;
 
-                y += sizeLine.y;
-                if (currentlyVisibleLines > m_linesPerPage)
-                    m_linesPerPage = currentlyVisibleLines;
+                    y += sizeLine.y;
+                }
+                else // wxLC_ALIGN_LEFT
+                {
+                    x += sizeLine.x + MARGIN_BETWEEN_ROWS;
+                }
+            }
 
-                // Assume that the size of the next one is the same... (FIXME)
-                if ( y + sizeLine.y >= clientHeight )
+            if ( HasFlag(wxLC_ALIGN_TOP) )
+            {
+                // traverse the items again and tweak their sizes so that they are
+                // all the same in a row
+                for ( i = 0; i < count; i++ )
                 {
-                    currentlyVisibleLines = 0;
-                    y = 2;
-                    x += maxWidth+6;
-                    entireWidth += maxWidth+6;
-                    maxWidth = 0;
+                    wxListLineData *line = GetLine(i);
+                    line->m_gi->ExtendWidth(widthMax);
                 }
+            }
+
+
+            SetScrollbars
+            (
+                SCROLL_UNIT_X,
+                SCROLL_UNIT_Y,
+                (x + SCROLL_UNIT_X) / SCROLL_UNIT_X,
+                (y + SCROLL_UNIT_Y) / SCROLL_UNIT_Y,
+                GetScrollPos( wxHORIZONTAL ),
+                GetScrollPos( wxVERTICAL ),
+                TRUE
+            );
+        }
+        else // "flowed" arrangement, the most complicated case
+        {
+            // at first we try without any scrollbars, if the items don't fit into
+            // the window, we recalculate after subtracting the space taken by the
+            // scrollbar
 
-                // We have reached the last item.
-                if ( i == count - 1 )
-                    entireWidth += maxWidth;
+            int entireWidth = 0;
+            #if 0
+            // entireHeight is not used so no need to define it
+            int entireHeight = 0;
+            #endif
 
-                if ( (tries == 0) && (entireWidth+SCROLL_UNIT_X > clientWidth) )
+            for (int tries = 0; tries < 2; tries++)
+            {
+                entireWidth = 2*EXTRA_BORDER_X;
+                #if 0
+                // entireHeight is not used so no need to define it
+                entireHeight = 2*EXTRA_BORDER_Y;
+                #endif
+
+                if (tries == 1)
                 {
-                    clientHeight -= 15; // We guess the scrollbar height. (FIXME)
-                    m_linesPerPage = 0;
-                    currentlyVisibleLines = 0;
-                    break;
+                    // Now we have decided that the items do not fit into the
+                    // client area, so we need a scrollbar
+                    entireWidth += SCROLL_UNIT_X;
                 }
 
-                if ( i == count - 1 )
-                    tries = 1;  // Everything fits, no second try required.
+                int x = EXTRA_BORDER_X;
+                int y = EXTRA_BORDER_Y;
+                int maxWidthInThisRow = 0;
+
+                m_linesPerPage = 0;
+                int currentlyVisibleLines = 0;
+
+                for (size_t i = 0; i < count; i++)
+                {
+                    currentlyVisibleLines++;
+                    wxListLineData *line = GetLine(i);
+                    line->CalculateSize( &dc, iconSpacing );
+                    line->SetPosition( x, y, iconSpacing );
+
+                    wxSize sizeLine = GetLineSize(i);
+
+                    if ( maxWidthInThisRow < sizeLine.x )
+                        maxWidthInThisRow = sizeLine.x;
+
+                    y += sizeLine.y;
+                    if (currentlyVisibleLines > m_linesPerPage)
+                        m_linesPerPage = currentlyVisibleLines;
+
+                    if ( y + sizeLine.y >= clientHeight )
+                    {
+                        currentlyVisibleLines = 0;
+                        y = EXTRA_BORDER_Y;
+                        maxWidthInThisRow += MARGIN_BETWEEN_ROWS;
+                        x += maxWidthInThisRow;
+                        entireWidth += maxWidthInThisRow;
+                        maxWidthInThisRow = 0;
+                    }
+
+                    // We have reached the last item.
+                    if ( i == count - 1 )
+                        entireWidth += maxWidthInThisRow;
+
+                    if ( (tries == 0) &&
+                            (entireWidth + SCROLL_UNIT_X > clientWidth) )
+                    {
+                        clientHeight -= wxSystemSettings::
+                                            GetMetric(wxSYS_HSCROLL_Y);
+                        m_linesPerPage = 0;
+                        currentlyVisibleLines = 0;
+                        break;
+                    }
+
+                    if ( i == count - 1 )
+                        tries = 1;  // Everything fits, no second try required.
+                }
             }
-        }
 
-        int scroll_pos = GetScrollPos( wxHORIZONTAL );
-        SetScrollbars( m_xScroll, m_yScroll, (entireWidth+SCROLL_UNIT_X) / m_xScroll, 0, scroll_pos, 0, TRUE );
+            SetScrollbars
+            (
+                SCROLL_UNIT_X,
+                SCROLL_UNIT_Y,
+                (entireWidth + SCROLL_UNIT_X) / SCROLL_UNIT_X,
+                0,
+                GetScrollPos( wxHORIZONTAL ),
+                0,
+                TRUE
+            );
+        }
     }
 
     if ( !noRefresh )
@@ -4228,18 +4350,39 @@ void wxListMainWindow::InsertItem( wxListItem &item )
 
     m_dirty = TRUE;
 
+    #if 0
+    // this is unused variable
     int mode = 0;
+    #endif
     if ( HasFlag(wxLC_REPORT) )
     {
+        #if 0
+        // this is unused variable
         mode = wxLC_REPORT;
+        #endif
         ResetVisibleLinesRange();
     }
     else if ( HasFlag(wxLC_LIST) )
+        #if 0
+        // this is unused variable
         mode = wxLC_LIST;
+        #else
+        {}
+        #endif
     else if ( HasFlag(wxLC_ICON) )
+        #if 0
+        // this is unused variable
         mode = wxLC_ICON;
+        #else
+        {}
+        #endif
     else if ( HasFlag(wxLC_SMALL_ICON) )
+        #if 0
+        // this is unused variable
         mode = wxLC_ICON;  // no typo
+        #else
+        {}
+        #endif
     else
     {
         wxFAIL_MSG( _T("unknown mode") );
@@ -4253,6 +4396,14 @@ void wxListMainWindow::InsertItem( wxListItem &item )
 
     m_dirty = TRUE;
 
+    // If an item is selected at or below the point of insertion, we need to
+    // increment the member variables because the current row's index has gone
+    // up by one
+    if ( HasCurrent() && m_current >= id )
+    {
+        m_current++;
+    }
+
     SendNotify(id, wxEVT_COMMAND_LIST_INSERT_ITEM);
 
     RefreshLines(id, GetItemCount() - 1);
@@ -4422,6 +4573,7 @@ wxGenericListCtrl::wxGenericListCtrl()
 
     m_mainWin = (wxListMainWindow*) NULL;
     m_headerWin = (wxListHeaderWindow*) NULL;
+    m_headerHeight = 0;
 }
 
 wxGenericListCtrl::~wxGenericListCtrl()
@@ -4434,15 +4586,38 @@ wxGenericListCtrl::~wxGenericListCtrl()
         delete m_imageListState;
 }
 
+void wxGenericListCtrl::CalculateAndSetHeaderHeight()
+{
+    if ( m_headerWin )
+    {
+        // we use 'g' to get the descent, too
+        int w, h, d;
+        m_headerWin->GetTextExtent(wxT("Hg"), &w, &h, &d);
+        h += d + 2 * HEADER_OFFSET_Y + EXTRA_HEIGHT;
+
+        // only update if there is not enough space
+        if ( h > m_headerHeight )
+        {
+            m_headerHeight = h;
+
+            m_headerWin->SetSize(m_headerWin->GetSize().x, m_headerHeight);
+
+            if ( HasFlag(wxLC_REPORT) && !HasFlag(wxLC_NO_HEADER) )
+                ResizeReportView(TRUE);
+        }
+    }
+}
+
 void wxGenericListCtrl::CreateHeaderWindow()
 {
     m_headerWin = new wxListHeaderWindow
                       (
                         this, -1, m_mainWin,
                         wxPoint(0, 0),
-                        wxSize(GetClientSize().x, HEADER_HEIGHT),
+                        wxSize(GetClientSize().x, m_headerHeight),
                         wxTAB_TRAVERSAL
                       );
+    CalculateAndSetHeaderHeight();
 }
 
 bool wxGenericListCtrl::Create(wxWindow *parent,
@@ -4665,11 +4840,16 @@ bool wxGenericListCtrl::SetItemData( long item, long data )
     return TRUE;
 }
 
+wxRect wxGenericListCtrl::GetViewRect() const
+{
+    return m_mainWin->GetViewRect();
+}
+
 bool wxGenericListCtrl::GetItemRect( long item, wxRect &rect,  int WXUNUSED(code) ) const
 {
     m_mainWin->GetItemRect( item, rect );
     if ( m_mainWin->HasHeader() )
-        rect.y += HEADER_HEIGHT + 1;
+        rect.y += m_headerHeight + 1;
     return TRUE;
 }
 
@@ -4699,6 +4879,13 @@ void wxGenericListCtrl::SetItemSpacing( int spacing, bool isSmall )
     m_mainWin->SetItemSpacing( spacing, isSmall );
 }
 
+wxSize wxGenericListCtrl::GetItemSpacing() const
+{
+    const int spacing = m_mainWin->GetItemSpacing(HasFlag(wxLC_SMALL_ICON));
+
+    return wxSize(spacing, spacing);
+}
+
 int wxGenericListCtrl::GetItemSpacing( bool isSmall ) const
 {
     return m_mainWin->GetItemSpacing( isSmall );
@@ -5001,8 +5188,8 @@ void wxGenericListCtrl::ResizeReportView(bool showHeader)
 
     if ( showHeader )
     {
-        m_headerWin->SetSize( 0, 0, cw, HEADER_HEIGHT );
-        m_mainWin->SetSize( 0, HEADER_HEIGHT + 1, cw, ch - HEADER_HEIGHT - 1 );
+        m_headerWin->SetSize( 0, 0, cw, m_headerHeight );
+        m_mainWin->SetSize( 0, m_headerHeight + 1, cw, ch - m_headerHeight - 1 );
     }
     else // no header window
     {
@@ -5013,7 +5200,7 @@ void wxGenericListCtrl::ResizeReportView(bool showHeader)
 void wxGenericListCtrl::OnInternalIdle()
 {
     wxWindow::OnInternalIdle();
-    
+
     // do it only if needed
     if ( !m_mainWin->m_dirty )
         return;
@@ -5069,8 +5256,11 @@ bool wxGenericListCtrl::SetFont( const wxFont &font )
     if (m_headerWin)
     {
         m_headerWin->SetFont( font );
+        CalculateAndSetHeaderHeight();
     }
 
+    Refresh();
+
     return TRUE;
 }