Exemplo n.º 1
0
        private static void ClearRowSelector(RowSelectorDecorator decorator)
        {
            Debug.Assert(decorator != null);

            DataGridControl.ClearContainer(decorator);

            var rowSelector = decorator.RowSelector;

            if (rowSelector != null)
            {
                rowSelector.ReferenceElement = null;
                rowSelector.ContainerRect    = RowSelectorPane.EmptyRect;
            }
        }
Exemplo n.º 2
0
        private static void PrepareRowSelector(RowSelectorDecorator decorator, DependencyObject container, Rect containerRect, FrameworkElement referenceElement)
        {
            Debug.Assert(decorator != null);

            DataGridControl.SetContainer(decorator, container);

            var rowSelector = decorator.RowSelector;

            if (rowSelector != null)
            {
                rowSelector.ReferenceElement = referenceElement;
                rowSelector.ContainerRect    = containerRect;
            }
        }
Exemplo n.º 3
0
        private bool IsRowSelectorVisible(RowSelectorDecorator decorator)
        {
            Debug.Assert(decorator != null);
            if (decorator.RowSelector == null)
            {
                return(false);
            }

            var container = DataGridControl.GetContainer(decorator);

            if (container == null)
            {
                return(false);
            }

            return(m_visibleSelectors.ContainsKey(container));
        }
Exemplo n.º 4
0
        private Size GetAvailableSize(RowSelectorDecorator decorator, Size availableSize)
        {
            var rowSelector = decorator.RowSelector;

            if (rowSelector == null)
            {
                return(RowSelectorPane.EmptySize);
            }

            var containerRect = rowSelector.ContainerRect;

            if (this.Orientation == Orientation.Vertical)
            {
                return(new Size(availableSize.Width, containerRect.Height));
            }

            return(new Size(containerRect.Width, availableSize.Height));
        }
Exemplo n.º 5
0
        private Rect GetArrangeRect(RowSelectorDecorator decorator, Size finalSize)
        {
            var rowSelector = decorator.RowSelector;

            if (rowSelector == null)
            {
                return(RowSelectorPane.EmptyRect);
            }

            var container = rowSelector.DataContext as FrameworkElement;

            Debug.Assert(container != null);

            var coordinatesTransform = container.TransformToVisual(this);
            var origin = coordinatesTransform.Transform(RowSelectorPane.OriginPoint);

            if (this.Orientation == Orientation.Vertical)
            {
                return(new Rect(0, origin.Y, finalSize.Width, container.ActualHeight));
            }

            return(new Rect(origin.X, 0, container.ActualWidth, finalSize.Height));
        }
Exemplo n.º 6
0
        private RowSelectorDecorator RecycleOrCreateRowSelector(DependencyObject container)
        {
            RowSelectorDecorator decorator;

            // Try to re-use a RowSelector that is schedule to be clean up.
            if (m_pendingCleanup.Count > 0)
            {
                int index = m_pendingCleanup.Count - 1;

                for (int i = index; i >= 0; i--)
                {
                    decorator = m_pendingCleanup[i];
                    if (DataGridControl.GetContainer(decorator) == container)
                    {
                        index = i;
                        break;
                    }
                }

                decorator = m_pendingCleanup[index];
                m_pendingCleanup.RemoveAt(index);
            }
            // Try to recycle a RowSelector from the recycling pool.
            else if (m_recyclingQueue.Count > 0)
            {
                decorator = m_recyclingQueue.Dequeue();
            }
            else
            {
                decorator = new RowSelectorDecorator();

                this.InternalChildren.Add(decorator);
            }

            return(decorator);
        }
Exemplo n.º 7
0
        private Geometry GetClipRegion(RowSelectorDecorator decorator, Rect arrangeRect, FrameworkElement referenceElement)
        {
            if (referenceElement == null)
            {
                return(null);
            }

            var rowSelector = decorator.RowSelector;

            if (rowSelector == null)
            {
                return(null);
            }

            GeneralTransform  referenceElementToRowSelectorPaneTransform = referenceElement.TransformToVisual(this);
            Rect              referenceElementRegion = referenceElementToRowSelectorPaneTransform.TransformBounds(new Rect(0, 0, referenceElement.ActualWidth, referenceElement.ActualHeight));
            RectangleGeometry clipRegion             = null;

            if (this.Orientation == Orientation.Vertical)
            {
                UIElement container = rowSelector.DataContext as UIElement;

                if ((container != null) && (container.Clip != null))
                {
                    Rect containerClipBounds = container.Clip.Bounds;

                    // In this case, we will use the container's clip properties (Top and Bottom).
                    clipRegion = new RectangleGeometry(new Rect(0d, containerClipBounds.Y, arrangeRect.Width, containerClipBounds.Height));
                }
                else if ((arrangeRect.Top < referenceElementRegion.Top) || (arrangeRect.Bottom > referenceElementRegion.Bottom))
                {
                    double x = 0d;
                    double y = Math.Max(referenceElementRegion.Top - arrangeRect.Top, 0);

                    double width  = arrangeRect.Width;
                    double height = Math.Max(0, arrangeRect.Height - y - Math.Max(0, arrangeRect.Bottom - referenceElementRegion.Bottom));

                    clipRegion = new RectangleGeometry(new Rect(x, y, width, height));
                }
            }
            else
            {
                UIElement container = rowSelector.DataContext as UIElement;

                if ((container != null) && (container.Clip != null))
                {
                    Rect containerClipBounds = container.Clip.Bounds;

                    // In this case, we will use the container's clip properties (Left and Right).
                    clipRegion = new RectangleGeometry(new Rect(containerClipBounds.X, 0d, containerClipBounds.Width, arrangeRect.Height));
                }
                else if ((arrangeRect.Left < referenceElementRegion.Left) || (arrangeRect.Right > referenceElementRegion.Right))
                {
                    double x = Math.Max(referenceElementRegion.Left - arrangeRect.Left, 0);
                    double y = 0d;

                    double width  = arrangeRect.Width - x - Math.Max(0, arrangeRect.Right - referenceElementRegion.Right);
                    double height = arrangeRect.Height;

                    clipRegion = new RectangleGeometry(new Rect(x, y, width, height));
                }
            }

            return(clipRegion);
        }
    private static void PrepareRowSelector( RowSelectorDecorator decorator, DependencyObject container, Rect containerRect, FrameworkElement referenceElement )
    {
      Debug.Assert( decorator != null );

      DataGridControl.SetContainer( decorator, container );

      var rowSelector = decorator.RowSelector;
      if( rowSelector != null )
      {
        rowSelector.ReferenceElement = referenceElement;
        rowSelector.ContainerRect = containerRect;
      }
    }
    private static void ClearRowSelector( RowSelectorDecorator decorator )
    {
      Debug.Assert( decorator != null );

      DataGridControl.ClearContainer( decorator );

      var rowSelector = decorator.RowSelector;
      if( rowSelector != null )
      {
        rowSelector.ReferenceElement = null;
        rowSelector.ContainerRect = RowSelectorPane.EmptyRect;
      }
    }
    private RowSelectorDecorator RecycleOrCreateRowSelector( DependencyObject container )
    {
      RowSelectorDecorator decorator;

      // Try to re-use a RowSelector that is schedule to be clean up.
      if( m_pendingCleanup.Count > 0 )
      {
        int index = m_pendingCleanup.Count - 1;

        for( int i = index; i >= 0; i-- )
        {
          decorator = m_pendingCleanup[ i ];
          if( DataGridControl.GetContainer( decorator ) == container )
          {
            index = i;
            break;
          }
        }

        decorator = m_pendingCleanup[ index ];
        m_pendingCleanup.RemoveAt( index );
      }
      // Try to recycle a RowSelector from the recycling pool.
      else if( m_recyclingQueue.Count > 0 )
      {
        decorator = m_recyclingQueue.Dequeue();
      }
      else
      {
        decorator = new RowSelectorDecorator();

        this.InternalChildren.Add( decorator );
      }

      return decorator;
    }
    private bool IsRowSelectorVisible( RowSelectorDecorator decorator )
    {
      Debug.Assert( decorator != null );
      if( decorator.RowSelector == null )
        return false;

      var container = DataGridControl.GetContainer( decorator );
      if( container == null )
        return false;

      return m_visibleSelectors.ContainsKey( container );
    }
    private Geometry GetClipRegion( RowSelectorDecorator decorator, Rect arrangeRect, FrameworkElement referenceElement )
    {
      if( referenceElement == null )
        return null;

      var rowSelector = decorator.RowSelector;
      if( rowSelector == null )
        return null;

      GeneralTransform referenceElementToRowSelectorPaneTransform = referenceElement.TransformToVisual( this );
      Rect referenceElementRegion = referenceElementToRowSelectorPaneTransform.TransformBounds( new Rect( 0, 0, referenceElement.ActualWidth, referenceElement.ActualHeight ) );
      RectangleGeometry clipRegion = null;

      if( this.Orientation == Orientation.Vertical )
      {
        UIElement container = rowSelector.DataContext as UIElement;

        if( ( container != null ) && ( container.Clip != null ) )
        {
          Rect containerClipBounds = container.Clip.Bounds;

          // In this case, we will use the container's clip properties (Top and Bottom).
          clipRegion = new RectangleGeometry( new Rect( 0d, containerClipBounds.Y, arrangeRect.Width, containerClipBounds.Height ) );
        }
        else if( ( arrangeRect.Top < referenceElementRegion.Top ) || ( arrangeRect.Bottom > referenceElementRegion.Bottom ) )
        {
          double x = 0d;
          double y = Math.Max( referenceElementRegion.Top - arrangeRect.Top, 0 );

          double width = arrangeRect.Width;
          double height = Math.Max( 0, arrangeRect.Height - y - Math.Max( 0, arrangeRect.Bottom - referenceElementRegion.Bottom ) );

          clipRegion = new RectangleGeometry( new Rect( x, y, width, height ) );
        }
      }
      else
      {
        UIElement container = rowSelector.DataContext as UIElement;

        if( ( container != null ) && ( container.Clip != null ) )
        {
          Rect containerClipBounds = container.Clip.Bounds;

          // In this case, we will use the container's clip properties (Left and Right).
          clipRegion = new RectangleGeometry( new Rect( containerClipBounds.X, 0d, containerClipBounds.Width, arrangeRect.Height ) );
        }
        else if( ( arrangeRect.Left < referenceElementRegion.Left ) || ( arrangeRect.Right > referenceElementRegion.Right ) )
        {
          double x = Math.Max( referenceElementRegion.Left - arrangeRect.Left, 0 );
          double y = 0d;

          double width = arrangeRect.Width - x - Math.Max( 0, arrangeRect.Right - referenceElementRegion.Right );
          double height = arrangeRect.Height;

          clipRegion = new RectangleGeometry( new Rect( x, y, width, height ) );
        }
      }

      return clipRegion;
    }
    private Size GetAvailableSize( RowSelectorDecorator decorator, Size availableSize )
    {
      var rowSelector = decorator.RowSelector;
      if( rowSelector == null )
        return RowSelectorPane.EmptySize;

      var containerRect = rowSelector.ContainerRect;

      if( this.Orientation == Orientation.Vertical )
        return new Size( availableSize.Width, containerRect.Height );

      return new Size( containerRect.Width, availableSize.Height );
    }
    private Rect GetArrangeRect( RowSelectorDecorator decorator, Size finalSize )
    {
      var rowSelector = decorator.RowSelector;
      if( rowSelector == null )
        return RowSelectorPane.EmptyRect;

      var container = rowSelector.DataContext as FrameworkElement;
      Debug.Assert( container != null );

      var coordinatesTransform = container.TransformToVisual( this );
      var origin = coordinatesTransform.Transform( RowSelectorPane.OriginPoint );

      if( this.Orientation == Orientation.Vertical )
        return new Rect( 0, origin.Y, finalSize.Width, container.ActualHeight );

      return new Rect( origin.X, 0, container.ActualWidth, finalSize.Height );
    }