Ensure there is valid context for DrawRectangle

[wxWidgets.git] / src / generic / datavgen.cpp

diff --git a/src/generic/datavgen.cpp b/src/generic/datavgen.cpp
index 89bc7ebfc0142dd6ba874e26bd0e52f70d83a0b0..def4fb5877478b7f13170d42e6f05da2070d84ce 100644 (file)
--- a/src/generic/datavgen.cpp
+++ b/src/generic/datavgen.cpp
@@ -80,7 +80,22 @@ static const int EXPANDER_OFFSET = 1;
 // For the generic implementation, both the leaf nodes and the nodes are sorted for
 // fast search when needed
 static wxDataViewModel* g_model;
-static int g_column = -2;
+
+// The column is either the index of the column to be used for sorting or one
+// of the special values in this enum:
+enum
+{
+    // Sort when we're thawed later.
+    SortColumn_OnThaw = -3,
+
+    // Don't sort at all.
+    SortColumn_None = -2,
+
+    // Sort using the model default sort order.
+    SortColumn_Default = -1
+};
+
+static int g_column = SortColumn_None;
 static bool g_asending = true;
 
 // ----------------------------------------------------------------------------
@@ -581,16 +596,39 @@ public:
         UpdateDisplay();
     }
 
+    // Override the base class method to resort if needed, i.e. if
+    // SortPrepare() was called -- and ignored -- while we were frozen.
+    virtual void DoThaw()
+    {
+        if ( g_column == SortColumn_OnThaw )
+        {
+            Resort();
+            g_column = SortColumn_None;
+        }
+
+        wxWindow::DoThaw();
+    }
+
     void SortPrepare()
     {
         g_model = GetModel();
+
+        // Avoid sorting while the window is frozen, this allows to quickly add
+        // many items without resorting after each addition and only resort
+        // them all at once when the window is finally thawed, see above.
+        if ( IsFrozen() )
+        {
+            g_column = SortColumn_OnThaw;
+            return;
+        }
+
         wxDataViewColumn* col = GetOwner()->GetSortingColumn();
         if( !col )
         {
             if (g_model->HasDefaultCompare())
-                g_column = -1;
+                g_column = SortColumn_Default;
             else
-                g_column = -2;
+                g_column = SortColumn_None;
 
             g_asending = true;
             return;
@@ -678,6 +716,7 @@ public:
 
     void SetRowHeight( int lineHeight ) { m_lineHeight = lineHeight; }
     int GetRowHeight() const { return m_lineHeight; }
+    int GetDefaultRowHeight() const;
 
     // Some useful functions for row and item mapping
     wxDataViewItem GetItemByRow( unsigned int row ) const;
@@ -1398,15 +1437,7 @@ wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID i
     m_currentColSetByKeyboard = false;
     m_useCellFocus = false;
     m_currentRow = (unsigned)-1;
-
-#ifdef __WXMSW__
-    // We would like to use the same line height that Explorer uses. This is
-    // different from standard ListView control since Vista.
-    if ( wxGetWinVersion() >= wxWinVersion_Vista )
-        m_lineHeight = wxMax(16, GetCharHeight()) + 6; // 16 = mini icon height
-    else
-#endif // __WXMSW__
-        m_lineHeight = wxMax(16, GetCharHeight()) + 1; // 16 = mini icon height
+    m_lineHeight = GetDefaultRowHeight();
 
 #if wxUSE_DRAG_AND_DROP
     m_dragCount = 0;
@@ -1449,6 +1480,20 @@ wxDataViewMainWindow::~wxDataViewMainWindow()
 }
 
 
+int wxDataViewMainWindow::GetDefaultRowHeight() const
+{
+#ifdef __WXMSW__
+    // We would like to use the same line height that Explorer uses. This is
+    // different from standard ListView control since Vista.
+    if ( wxGetWinVersion() >= wxWinVersion_Vista )
+        return wxMax(16, GetCharHeight()) + 6; // 16 = mini icon height
+    else
+#endif // __WXMSW__
+        return wxMax(16, GetCharHeight()) + 1; // 16 = mini icon height
+}
+
+
+
 #if wxUSE_DRAG_AND_DROP
 bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
 {
@@ -3943,10 +3988,11 @@ void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
         return;
     }
 
-    if(event.LeftDown())
+    if(event.ButtonDown())
     {
-        // Not skipping this event would prevent the system from setting focus
-        // to this window.
+        // Not skipping button down events would prevent the system from
+        // setting focus to this window as most (all?) of them do by default,
+        // so skip it to enable default handling.
         event.Skip();
     }
 
@@ -3992,30 +4038,30 @@ void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
             le.SetItem( item );
             le.SetColumn( col->GetModelColumn() );
             le.SetDataViewColumn( col );
-
-            wxVariant value;
-            model->GetValue( value, item, col->GetModelColumn() );
-            le.SetValue(value);
         }
 
         parent->ProcessWindowEvent(le);
         return;
     }
 
-    if (!col)
+    // Check if we clicked outside the item area.
+    if ((current >= GetRowCount()) || !col)
     {
+        // Follow Windows convention here: clicking either left or right (but
+        // not middle) button clears the existing selection.
+        if (m_owner && (event.LeftDown() || event.RightDown()))
+        {
+            if (!GetSelections().empty())
+            {
+                m_owner->UnselectAll();
+                SendSelectionChangedEvent(wxDataViewItem());
+            }
+        }
         event.Skip();
         return;
     }
 
     wxDataViewRenderer *cell = col->GetRenderer();
-    if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
-    {
-        // Unselect all if below the last row ?
-        event.Skip();
-        return;
-    }
-
     wxDataViewColumn* const
         expander = GetExpanderColumnOrFirstOne(GetOwner());
 
@@ -4429,6 +4475,7 @@ void wxDataViewCtrl::Init()
     m_sortingColumnIdx = wxNOT_FOUND;
 
     m_headerArea = NULL;
+    m_clientArea = NULL;
 
     m_colsDirty = false;
 }
@@ -4542,6 +4589,31 @@ void wxDataViewCtrl::SetFocus()
         m_clientArea->SetFocus();
 }
 
+bool wxDataViewCtrl::SetFont(const wxFont & font)
+{
+    if (!wxControl::SetFont(font))
+        return false;
+
+    if (m_headerArea)
+        m_headerArea->SetFont(font);
+
+    if (m_clientArea)
+    {
+        m_clientArea->SetFont(font);
+        m_clientArea->SetRowHeight(m_clientArea->GetDefaultRowHeight());
+    }
+
+    if (m_headerArea || m_clientArea)
+    {
+        InvalidateColBestWidths();
+        Layout();
+    }
+
+    return true;
+}
+
+
+
 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
 {
     if (!wxDataViewCtrlBase::AssociateModel( model ))