compilation warning fix

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

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index 38ff1e693c40674e2d09770bf763ca54803abf1e..16ec1bbabc9686b042a191657bb9abd13750ae26 100644 (file)
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -611,7 +611,13 @@ public:
     // bring the current item into view
     void MoveToFocus() { MoveToItem(m_current); }
 
+    // start editing the label of the given item
     void EditLabel( long item );
+
+    // suspend/resume redrawing the control
+    void Freeze();
+    void Thaw();
+
     void OnRenameTimer();
     void OnRenameAccept();
 
@@ -843,6 +849,9 @@ private:
     wxBrush *m_highlightBrush,
             *m_highlightUnfocusedBrush;
 
+    // if this is > 0, the control is frozen and doesn't redraw itself
+    size_t m_freezeCount;
+
     DECLARE_DYNAMIC_CLASS(wxListMainWindow);
     DECLARE_EVENT_TABLE()
 };
@@ -1879,7 +1888,7 @@ void wxListHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 
     int numColumns = m_owner->GetColumnCount();
     wxListItem item;
-    for (int i = 0; i < numColumns; i++)
+    for ( int i = 0; i < numColumns && x < w; i++ )
     {
         m_owner->GetColumn( i, item );
         int wCol = item.m_width;
@@ -1923,11 +1932,9 @@ void wxListHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
         dc.DrawText( item.GetText(),
                      x + EXTRA_WIDTH, HEADER_OFFSET_Y + EXTRA_HEIGHT );
 
-        if ( x > w - wCol + 5 )
-            break;
-
         x += wCol;
     }
+
     dc.EndDrawing();
 }
 
@@ -2229,6 +2236,8 @@ void wxListMainWindow::Init()
     m_currentEdit =
     m_lineLastClicked =
     m_lineBeforeLastClicked = (size_t)-1;
+
+    m_freezeCount = 0;
 }
 
 void wxListMainWindow::InitScrolling()
@@ -2621,6 +2630,14 @@ void wxListMainWindow::RefreshSelected()
         to = GetItemCount() - 1;
     }
 
+    // VZ: this code would work fine if wxGTK wxWindow::Refresh() were
+    //     reasonable, i.e. if it only generated one expose event for
+    //     several calls to it - as it is, each Refresh() results in a
+    //     repaint which provokes flicker too horrible to be seen
+    //
+    //     when/if wxGTK is fixed, this code should be restored as normally it
+    //     should generate _less_ flicker than the version below
+#ifndef __WXGTK__
     if ( HasCurrent() && m_current >= from && m_current <= to )
     {
         RefreshLine(m_current);
@@ -2634,6 +2651,41 @@ void wxListMainWindow::RefreshSelected()
             RefreshLine(line);
         }
     }
+#else // __WXGTK__
+    size_t selMin = (size_t)-1,
+           selMax = 0;
+
+    for ( size_t line = from; line <= to; line++ )
+    {
+        if ( IsHighlighted(line) || (line == m_current) )
+        {
+            if ( line < selMin )
+                selMin = line;
+            if ( line > selMax )
+                selMax = line;
+        }
+    }
+
+    if ( selMin != (size_t)-1 )
+    {
+        RefreshLines(selMin, selMax);
+    }
+#endif // !__WXGTK__/__WXGTK__
+}
+
+void wxListMainWindow::Freeze()
+{
+    m_freezeCount++;
+}
+
+void wxListMainWindow::Thaw()
+{
+    wxCHECK_RET( m_freezeCount > 0, _T("thawing unfrozen list control?") );
+
+    if ( !--m_freezeCount )
+    {
+        Refresh();
+    }
 }
 
 void wxListMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
@@ -2642,9 +2694,9 @@ void wxListMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
     // done (a Windows requirement).
     wxPaintDC dc( this );
 
-    if ( IsEmpty() )
+    if ( IsEmpty() || m_freezeCount )
     {
-        // empty control. nothing to draw
+        // nothing to draw or not the moment to draw it
         return;
     }
 
@@ -3216,7 +3268,8 @@ void wxListMainWindow::OnChar( wxKeyEvent &event )
         nevent.SetDirection( !event.ShiftDown() );
         nevent.SetEventObject( GetParent()->GetParent() );
         nevent.SetCurrentFocus( m_parent );
-        if (GetParent()->GetParent()->GetEventHandler()->ProcessEvent( nevent )) return;
+        if (GetParent()->GetParent()->GetEventHandler()->ProcessEvent( nevent ))
+            return;
     }
 
     /* no item -> nothing to do */
@@ -3316,12 +3369,7 @@ void wxListMainWindow::OnChar( wxKeyEvent &event )
         case WXK_SPACE:
             if ( IsSingleSel() )
             {
-                wxListEvent le( wxEVT_COMMAND_LIST_ITEM_ACTIVATED,
-                                GetParent()->GetId() );
-                le.SetEventObject( GetParent() );
-                le.m_itemIndex = m_current;
-                GetLine(m_current)->GetItem( 0, le.m_item );
-                GetParent()->GetEventHandler()->ProcessEvent( le );
+                SendNotify( m_current, wxEVT_COMMAND_LIST_ITEM_ACTIVATED );
 
                 if ( IsHighlighted(m_current) )
                 {
@@ -3336,14 +3384,7 @@ void wxListMainWindow::OnChar( wxKeyEvent &event )
 
         case WXK_RETURN:
         case WXK_EXECUTE:
-            {
-                wxListEvent le( wxEVT_COMMAND_LIST_ITEM_ACTIVATED,
-                                GetParent()->GetId() );
-                le.SetEventObject( GetParent() );
-                le.m_itemIndex = m_current;
-                GetLine(m_current)->GetItem( 0, le.m_item );
-                GetParent()->GetEventHandler()->ProcessEvent( le );
-            }
+            SendNotify( m_current, wxEVT_COMMAND_LIST_ITEM_ACTIVATED );
             break;
 
         default:
@@ -3361,12 +3402,19 @@ extern wxWindow *g_focusWindow;
 
 void wxListMainWindow::OnSetFocus( wxFocusEvent &WXUNUSED(event) )
 {
-    m_hasFocus = TRUE;
+    // wxGTK sends us EVT_SET_FOCUS events even if we had never got
+    // EVT_KILL_FOCUS before which means that we finish by redrawing the items
+    // which are already drawn correctly resulting in horrible flicker - avoid
+    // it
+    if ( !m_hasFocus )
+    {
+        m_hasFocus = TRUE;
 
-    if (!GetParent())
-        return;
+        RefreshSelected();
+    }
 
-    RefreshSelected();
+    if ( !GetParent() )
+        return;
 
 #ifdef __WXGTK__
     g_focusWindow = GetParent();
@@ -4869,7 +4917,7 @@ bool wxListCtrl::DeleteAllColumns()
 {
     size_t count = m_mainWin->m_columns.GetCount();
     for ( size_t n = 0; n < count; n++ )
-        DeleteColumn(n);
+        DeleteColumn(0);
 
     return TRUE;
 }
@@ -5188,4 +5236,14 @@ void wxListCtrl::RefreshItems(long itemFrom, long itemTo)
     m_mainWin->RefreshLines(itemFrom, itemTo);
 }
 
+void wxListCtrl::Freeze()
+{
+    m_mainWin->Freeze();
+}
+
+void wxListCtrl::Thaw()
+{
+    m_mainWin->Thaw();
+}
+
 #endif // wxUSE_LISTCTRL