X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/64ac3db840a3b4496131a11817926859b4eab870..50e55c13ea2da06b1b03069673ae45edd780fc99:/src/generic/listctrl.cpp

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index 03e26f11e5..481654ecd8 100644
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -3181,10 +3181,14 @@ void wxListMainWindow::SetItem( wxListItem &item )
         }
     }
 
-    // update the item on screen
-    wxRect rectItem;
-    GetItemRect(id, rectItem);
-    RefreshRect(rectItem);
+    // update the item on screen unless we're going to update everything soon
+    // anyhow
+    if ( !m_dirty )
+    {
+        wxRect rectItem;
+        GetItemRect(id, rectItem);
+        RefreshRect(rectItem);
+    }
 }
 
 void wxListMainWindow::SetItemStateAll(long state, long stateMask)
@@ -3629,6 +3633,9 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
 
                 int x = EXTRA_BORDER_X;
                 int y = EXTRA_BORDER_Y;
+
+                // Note that "row" here is vertical, i.e. what is called
+                // "column" in many other places in wxWidgets.
                 int maxWidthInThisRow = 0;
 
                 m_linesPerPage = 0;
@@ -3650,8 +3657,24 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
                     if (currentlyVisibleLines > m_linesPerPage)
                         m_linesPerPage = currentlyVisibleLines;
 
-                    if ( y + sizeLine.y >= clientHeight )
+                    // Have we reached the end of the row either because no
+                    // more items would fit or because there are simply no more
+                    // items?
+                    if ( y + sizeLine.y >= clientHeight
+                            || i == count - 1)
                     {
+                        // Adjust all items in this row to have the same
+                        // width to ensure that they all align horizontally in
+                        // icon view.
+                        if ( HasFlag(wxLC_ICON) || HasFlag(wxLC_SMALL_ICON) )
+                        {
+                            size_t firstRowLine = i - currentlyVisibleLines + 1;
+                            for (size_t j = firstRowLine; j <= i; j++)
+                            {
+                                GetLine(j)->m_gi->ExtendWidth(maxWidthInThisRow);
+                            }
+                        }
+
                         currentlyVisibleLines = 0;
                         y = EXTRA_BORDER_Y;
                         maxWidthInThisRow += MARGIN_BETWEEN_ROWS;
@@ -3660,10 +3683,6 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
                         maxWidthInThisRow = 0;
                     }
 
-                    // We have reached the last item.
-                    if ( i == count - 1 )
-                        entireWidth += maxWidthInThisRow;
-
                     if ( (tries == 0) &&
                             (entireWidth + SCROLL_UNIT_X > clientWidth) )
                     {
@@ -3836,6 +3855,21 @@ void wxListMainWindow::DeleteColumn( int col )
         for ( size_t i = 0; i < m_lines.GetCount(); i++ )
         {
             wxListLineData * const line = GetLine(i);
+
+            // In the following atypical but possible scenario it can be
+            // legal to call DeleteColumn() but the items may not have any
+            // values for it:
+            //  1. In report view, insert a second column.
+            //  2. Still in report view, add an item with 2 values.
+            //  3. Switch to an icon (or list) view.
+            //  4. Add an item -- necessarily with 1 value only.
+            //  5. Switch back to report view.
+            //  6. Call DeleteColumn().
+            // So we need to check for this as otherwise we would simply crash
+            // if this happens.
+            if ( line->m_items.GetCount() <= static_cast<unsigned>(col) )
+                continue;
+
             wxListItemDataList::compatibility_iterator n = line->m_items.Item( col );
             delete n->GetData();
             line->m_items.Erase(n);
@@ -4820,6 +4854,10 @@ bool wxGenericListCtrl::DeleteColumn( int col )
     // if we don't have the header any longer, we need to relayout the window
     // if ( !GetColumnCount() )
 
+
+    // Ensure that the non-existent columns are really removed from display.
+    Refresh();
+
     return true;
 }