C# StackPanel.Measure方法代码示例

		public void ArrangeTest ()
		{
			Border b1 = new Border ();
			b1.Background = new SolidColorBrush (Colors.Red);
			b1.Width = 50;
			b1.Height = 25;
			
			Border b2 = new Border ();
			b2.Background = new SolidColorBrush (Colors.Blue);
			b2.Width = 25;
			b2.Height = 30;
			
			var stack = new StackPanel ();
			stack.Children.Add (b1);
			stack.Children.Add (b2);
			
			stack.Measure (new Size (Double.PositiveInfinity,Double.PositiveInfinity));
			
			Assert.AreEqual (new Size (50,55), stack.DesiredSize, "stack desired");
			Assert.AreEqual (new Size (0,0), new Size (stack.ActualWidth, stack.ActualHeight), "stack actual");
			
			stack.Arrange (new Rect (10, 10, stack.DesiredSize.Width, stack.DesiredSize.Height));
			
			Assert.AreEqual (new Size (50,55), stack.DesiredSize, "stack desired1");
			Assert.AreEqual (new Size (50,55), stack.RenderSize, "stack render1");
			Assert.AreEqual (new Rect (10,10,50,55), LayoutInformation.GetLayoutSlot (stack), "stack slot");
		}

        public void StackPanelLayoutTest()
        {
            StackPanel panel = new StackPanel();

            FrameworkElement child1 = new FrameworkElement { Height = 100 };
            FrameworkElement child2 = new FrameworkElement { Height = 100 };
            FrameworkElement child3 = new FrameworkElement { Height = 100 };

            panel.Children.Add(child1);
            panel.Children.Add(child2);
            panel.Children.Add(child3);

            panel.Measure(new Size(1000, 1000));

            Assert.AreEqual(new Size(0, 300), panel.DesiredSize);

            panel.Arrange(new Rect(1000, 300));

            Assert.AreEqual(new Size(1000, 300), panel.VisualSize);

            Assert.AreEqual(new Size(1000, 100), child1.VisualSize);
            Assert.AreEqual(new Size(1000, 100), child2.VisualSize);
            Assert.AreEqual(new Size(1000, 100), child3.VisualSize);

            Assert.AreEqual(new Point(0, 0), child1.VisualOffset);
            Assert.AreEqual(new Point(0, 100), child2.VisualOffset);
            Assert.AreEqual(new Point(0, 200), child3.VisualOffset);
        }

		public void LayoutSlotTest ()
		{
			var stack = new StackPanel ();
			stack.Children.Add (CreateSlotItem ());
			stack.Children.Add (CreateSlotItem ());
			stack.Children.Add (CreateSlotItem ());
			
			stack.Measure (new Size (Double.PositiveInfinity, Double.PositiveInfinity));
			stack.Arrange (new Rect (0,0,stack.DesiredSize.Width,stack.DesiredSize.Height));
			
			Assert.AreEqual (new Rect (0,0,25,33), LayoutInformation.GetLayoutSlot ((FrameworkElement)stack.Children[0]));
			Assert.AreEqual (new Rect (0,33,25,33), LayoutInformation.GetLayoutSlot ((FrameworkElement)stack.Children[1]));
			Assert.AreEqual (new Rect (0,66,25,33), LayoutInformation.GetLayoutSlot ((FrameworkElement)stack.Children[2]));
		}

        public void MouseDeviceCaptureTest()
        {
            Border child1 = new Border { Background = Brushes.Transparent, Width = 100, Height = 100 };
            Border child2 = new Border { Background = Brushes.Transparent, Width = 100, Height = 100 };
            Border child3 = new Border { Background = Brushes.Transparent, Width = 100, Height = 100 };

            StackPanel panel = new StackPanel { IsRootElement = true };
            panel.Children.Add(child1);
            panel.Children.Add(child2);

            MouseEventArgs lastArgs = null;
            panel.MouseMove += (sender, e) => lastArgs = e;

            TestPresentationSource presentationSource = new TestPresentationSource();
            presentationSource.RootElement = panel;

            panel.Measure(Size.Infinity);
            panel.Arrange(new Rect(panel.DesiredSize));

            MouseDevice mouseDevice = new MouseDevice(presentationSource);

            mouseDevice.Activate();
            mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 50), 0));
            Assert.AreEqual(child1, lastArgs.Source);
            Assert.AreEqual(child1, mouseDevice.HitTarget);
            Assert.AreEqual(null, mouseDevice.CaptureTarget);
            Assert.AreEqual(child1, mouseDevice.Target);

            mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 150), 0));
            Assert.AreEqual(child2, lastArgs.Source);
            Assert.AreEqual(child2, mouseDevice.HitTarget);
            Assert.AreEqual(null, mouseDevice.CaptureTarget);
            Assert.AreEqual(child2, mouseDevice.Target);

            mouseDevice.Capture(child2);
            mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 50), 0));
            Assert.AreEqual(child2, lastArgs.Source);
            Assert.AreEqual(child1, mouseDevice.HitTarget);
            Assert.AreEqual(child2, mouseDevice.CaptureTarget);
            Assert.AreEqual(child2, mouseDevice.Target);

            mouseDevice.ReleaseCapture();
            mouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 50), 0));
            Assert.AreEqual(child1, lastArgs.Source);
            Assert.AreEqual(child1, mouseDevice.HitTarget);
            Assert.AreEqual(null, mouseDevice.CaptureTarget);
            Assert.AreEqual(child1, mouseDevice.Target);
        }

		public void MeasureTest ()
		{
			Border b1 = new Border ();
			b1.Background = new SolidColorBrush (Colors.Red);
			b1.Width = 50;
			b1.Height = 25;
			
			Border b2 = new Border ();
			b2.Background = new SolidColorBrush (Colors.Blue);
			b2.Width = 25;
			b2.Height = 30;
			
			var stack = new StackPanel ();
			stack.Children.Add (b1);
			stack.Children.Add (b2);
			
			stack.Measure (new Size (Double.PositiveInfinity,Double.PositiveInfinity));
			
			Assert.AreEqual (new Size (50,55), stack.DesiredSize, "stack desired");
		}

        private void Print_Click(object sender, RoutedEventArgs e)
        {
            PrintDialog printDlg = new PrintDialog();

              if (printDlg.ShowDialog() == true)
              {
            printDlg.PrintTicket.PageMediaSize = new PageMediaSize(PageMediaSizeName.NorthAmerica4x6);
            //printDlg.PrintQueue.DefaultPrintTicket.PageOrientation = PageOrientation.Landscape;
            printDlg.PrintTicket.PageOrientation = PageOrientation.Landscape;
            Console.WriteLine("wwwwwwwwwwwwww->" + printDlg.PrintableAreaWidth);
            Console.WriteLine("hhhhhhhhhhhhhhh->" + printDlg.PrintableAreaHeight);
            Console.WriteLine("W-> "+printDlg.PrintTicket.PageMediaSize.Width);
            Console.WriteLine("H-> "+printDlg.PrintTicket.PageMediaSize.Height);
            //printDlg.PrintQueue.DefaultPrintTicket.PageOrientation = PageOrientation.Portrait;
            /*
            XpsDocumentWriter docWriter = PrintQueue.CreateXpsDocumentWriter(printDlg.PrintQueue);
            PrintTicket ticket = new PrintTicket();
            if (printDlg.PrintTicket.PageOrientation == PageOrientation.Landscape)
            {
              ticket.PageMediaSize =
            new PageMediaSize(dialog.PrintableAreaWidth, dialog.PrintableAreaHeight);
            }
            docWriter.Write(visual, ticket);
            */
            Size size = new Size(printDlg.PrintableAreaWidth, printDlg.PrintableAreaHeight);
            StackPanel stackPanel = new StackPanel { Orientation = Orientation.Vertical, RenderSize = size };

            //TextBlock title = new TextBlock { Text = @"Form", FontSize = 20 };
            //stackPanel.Children.Add(title);

            Image image = new Image { Source = this.theImage.Source, Stretch = Stretch.Uniform };
            image.RenderTransform = new ScaleTransform(1, 1);
            stackPanel.Children.Add(image);

            stackPanel.Measure(size);
            stackPanel.Arrange(new Rect(new Point(0, 0), stackPanel.DesiredSize));

            printDlg.PrintVisual(stackPanel, @"Form image");
            //printDlg.PrintVisual(theImage, "My First Print Job");
              }
        }

        internal void Print(System.Windows.Controls.Image ImageCtrl)
        {
            PrintDialog printDlg = new PrintDialog();

              if (printDlg.ShowDialog() == true)
              {
            printDlg.PrintTicket.PageMediaSize = new PageMediaSize(PageMediaSizeName.NorthAmerica4x6);
            printDlg.PrintTicket.PageOrientation = PageOrientation.Landscape;

            System.Windows.Size size = new System.Windows.Size(printDlg.PrintableAreaWidth, printDlg.PrintableAreaHeight);
            StackPanel stackPanel = new StackPanel { Orientation = Orientation.Vertical, RenderSize = size };

            //TextBlock title = new TextBlock { Text = @"Form", FontSize = 20 };
            //stackPanel.Children.Add(title);

            TransformGroup transformGroup = new TransformGroup();
            ScaleTransform scaleTransform = new ScaleTransform(1,1);
            transformGroup.Children.Add(scaleTransform);

            Image image = new Image { Source = ImageCtrl.Source, Stretch = Stretch.Uniform };

            //image.RenderTransform = new ScaleTransform(1, 1);

            BitmapSource imgSrouce = ImageCtrl.Source as BitmapSource;
            if (imgSrouce.PixelWidth < imgSrouce.PixelHeight)
            {

              image.LayoutTransform = new RotateTransform(90);
            }

            image.RenderTransform = transformGroup;

            stackPanel.Children.Add(image);

            stackPanel.Measure(size);
            stackPanel.Arrange(new Rect(new Point(0, 0), stackPanel.DesiredSize));

            printDlg.PrintVisual(stackPanel, @"Form image");
            //printDlg.PrintVisual(ImageCtrl, "My First Print Job");
              }
        }

        public void HitTestBasicTest()
        {
            StackPanel stackPanel1 = new StackPanel { Name = "stackPanel1", Background = Brushes.Transparent, IsRootElement = true };
            StackPanel stackPanel2 = new StackPanel { Name = "stackPanel2", Background = Brushes.Transparent, Height = 100, Orientation = Orientation.Horizontal };

            Border child1 = new Border { Name = "child1", Background = Brushes.Transparent, Height = 100, Width = 100 };
            Border child2 = new Border { Name = "child2", Background = Brushes.Transparent, Height = 100 };
            Border child3 = new Border { Name = "child3", Background = Brushes.Transparent, Width = 100 };
            Border child4 = new Border { Name = "child4", Background = Brushes.Transparent, Width = 100 };

            stackPanel1.Children.Add(child1);
            stackPanel1.Children.Add(stackPanel2);
            stackPanel1.Children.Add(child2);
            stackPanel2.Children.Add(child3);
            stackPanel2.Children.Add(child4);

            // [child1]       ]
            // [child3][child4]
            // [child2        ]

            stackPanel1.Measure(Size.Infinity);
            stackPanel1.Arrange(new Rect(stackPanel1.DesiredSize));

            Assert.AreEqual(child1, stackPanel1.HitTest(new Point(50, 50)));
            Assert.AreEqual(stackPanel1, stackPanel1.HitTest(new Point(150, 50)));
            Assert.AreEqual(child3, stackPanel1.HitTest(new Point(50, 150)));
            Assert.AreEqual(child4, stackPanel1.HitTest(new Point(150, 150)));
            Assert.AreEqual(child2, stackPanel1.HitTest(new Point(50, 250)));
            Assert.AreEqual(child2, stackPanel1.HitTest(new Point(150, 250)));

            stackPanel2.IsEnabled = false;
            Assert.AreEqual(stackPanel1, stackPanel1.HitTest(new Point(50, 150)));
            Assert.AreEqual(stackPanel1, stackPanel1.HitTest(new Point(150, 150)));

            child2.IsHitTestVisible = false;
            Assert.AreEqual(stackPanel1, stackPanel1.HitTest(new Point(50, 250)));
            Assert.AreEqual(stackPanel1, stackPanel1.HitTest(new Point(150, 250)));
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            System.Windows.Size size = new System.Windows.Size(600, 400);
              StackPanel stackPanel = new StackPanel { Orientation = Orientation.Vertical, RenderSize = size };

              System.Windows.Controls.Image ImageCtrl = new System.Windows.Controls.Image();
              BitmapImage bitImg = new BitmapImage(new Uri("C:\\temp\\32367-78aNJdO.jpg"));
              ImageCtrl.Source = bitImg;
              TransformGroup transformGroup = new TransformGroup();
              ScaleTransform scaleTransform = new ScaleTransform(1, 1);
              transformGroup.Children.Add(scaleTransform);

              System.Windows.Controls.Image image = new System.Windows.Controls.Image { Source = ImageCtrl.Source, Stretch = Stretch.Uniform };

              //image.RenderTransform = new ScaleTransform(1, 1);

              BitmapSource imgSrouce = ImageCtrl.Source as BitmapSource;
              if (imgSrouce.PixelWidth < imgSrouce.PixelHeight)
              {
            /*
            double argle = 90 * 180 / 3.142;
            RotateTransform rotateTransform = new RotateTransform();
            rotateTransform.Angle = argle;
            transformGroup.Children.Add(rotateTransform);
             * */
            image.LayoutTransform = new RotateTransform(90);
              }

              image.RenderTransform = transformGroup;

              stackPanel.Children.Add(image);

              stackPanel.Measure(size);
              stackPanel.Arrange(new Rect(new System.Windows.Point(0, 0), stackPanel.DesiredSize));
              this.AddChild(stackPanel);
        }

		public void LayoutSlotTest_Flow ()
		{
			var stack = new StackPanel ();
			var border = new Border () { Width = 100, Height = 200 };
			border.Child = stack;

			stack.FlowDirection = FlowDirection.RightToLeft;
			stack.Orientation = Orientation.Horizontal;
			
			var child0 = CreateSlotItem ();
			var child1 = CreateSlotItem ();
			child1.FlowDirection = FlowDirection.LeftToRight;

			stack.Children.Add (child0);
			stack.Children.Add (child1);
			stack.Children.Add (CreateSlotItem ());
			stack.Measure (new Size (Double.PositiveInfinity, Double.PositiveInfinity));
			stack.Arrange (new Rect (0,0,stack.DesiredSize.Width,stack.DesiredSize.Height));
			
			Assert.AreEqual (new Rect (0,0,25,33), LayoutInformation.GetLayoutSlot (child0));
			Assert.AreEqual (new Rect (25,0,25,33), LayoutInformation.GetLayoutSlot (child1));
			Assert.AreEqual (new Rect (50,0,25,33), LayoutInformation.GetLayoutSlot ((FrameworkElement)stack.Children[2]));
			CreateAsyncTest (border, () => {

					MatrixTransform xform0 = child0.TransformToVisual (border) as MatrixTransform;
					Assert.AreEqual ("-1,0,0,1,100,84", xform0.Matrix.ToString(), "transform0 string");

					MatrixTransform xform1 = child1.TransformToVisual (border) as MatrixTransform;
					Assert.AreEqual ("1,0,0,1,50,84", xform1.Matrix.ToString(), "transform1 string");

					MatrixTransform xform0_st = child0.TransformToVisual (stack) as MatrixTransform;
					Assert.AreEqual ("1,0,0,1,0,84", xform0_st.Matrix.ToString(), "transform0_st string");

					MatrixTransform xform1_st = child1.TransformToVisual (stack) as MatrixTransform;
					Assert.AreEqual ("-1,0,0,1,50,84", xform1_st.Matrix.ToString(), "transform1_st string");

				});
 		}

        private void BuildOverlay2D(SOMNode node, ISOMInput[] images, bool showCount, bool showNodeHash, bool showImageHash, bool showSpread, bool showPerImageDistance)
        {
            const int IMAGESIZE = 80;
            const int NODEHASHSIZE = 100;

            const double SMALLFONT1 = 17;
            const double LARGEFONT1 = 21;
            const double SMALLFONT2 = 15;
            const double LARGEFONT2 = 18;
            const double SMALLFONT3 = 12;
            const double LARGEFONT3 = 14;

            const double SMALLLINE1 = .8;
            const double LARGELINE1 = 1;
            const double SMALLLINE2 = .5;
            const double LARGELINE2 = .85;
            const double SMALLLINE3 = .3;
            const double LARGELINE3 = .7;

            Canvas canvas = new Canvas();
            List<Rect> rectangles = new List<Rect>();

            #region cursor rectangle

            var cursorRect = SelfOrganizingMapsWPF.GetMouseCursorRect(0);
            rectangles.Add(cursorRect.Item1);

            // This is just for debugging
            //Rectangle cursorVisual = new Rectangle()
            //{
            //    Width = cursorRect.Item1.Width,
            //    Height = cursorRect.Item1.Height,
            //    Fill = new SolidColorBrush(UtilityWPF.GetRandomColor(64, 192, 255)),
            //};

            //Canvas.SetLeft(cursorVisual, cursorRect.Item1.Left);
            //Canvas.SetTop(cursorVisual, cursorRect.Item1.Top);

            //canvas.Children.Add(cursorVisual);

            #endregion

            #region count text

            if (showCount)
            {
                StackPanel textPanel = new StackPanel()
                {
                    Orientation = Orientation.Horizontal,
                };

                // "images "
                OutlinedTextBlock text = SelfOrganizingMapsWPF.GetOutlineText("images ", SMALLFONT1, SMALLLINE1);
                text.Margin = new Thickness(0, 0, 4, 0);
                textPanel.Children.Add(text);

                // count
                text = SelfOrganizingMapsWPF.GetOutlineText(images.Length.ToString("N0"), LARGEFONT1, LARGELINE1);
                textPanel.Children.Add(text);

                // Place on canvas
                textPanel.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));       // aparently, the infinity is important to get an accurate desired size
                Size textSize = textPanel.DesiredSize;

                Rect textRect = SelfOrganizingMapsWPF.GetFreeSpot(textSize, new Point(0, 0), new Vector(0, 1), rectangles);
                rectangles.Add(textRect);

                Canvas.SetLeft(textPanel, textRect.Left);
                Canvas.SetTop(textPanel, textRect.Top);

                canvas.Children.Add(textPanel);
            }

            #endregion
            #region spread

            var nodeImages = images.Select(o => o.Weights);
            var allImages = _imagesByNode.SelectMany(o => o).Select(o => o.Weights);

            double nodeSpread = images.Length == 0 ? 0d : SelfOrganizingMaps.GetTotalSpread(nodeImages);
            double totalSpread = SelfOrganizingMaps.GetTotalSpread(allImages);

            if (showSpread && images.Length > 0)
            {
                double nodeStandDev = MathND.GetStandardDeviation(nodeImages);
                double totalStandDev = MathND.GetStandardDeviation(allImages);

                double percentSpread = nodeSpread / totalSpread;
                double pecentStandDev = nodeStandDev / totalSpread;

                Grid spreadPanel = new Grid()
                {
                    Margin = new Thickness(2),
                };
                spreadPanel.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Auto) });
                spreadPanel.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(4) });
                spreadPanel.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Auto) });

                spreadPanel.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Auto) });
                spreadPanel.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(2) });
//.........这里部分代码省略.........

        private void BuildOverlay2D(SOMNode node, ISOMInput[] inputs, bool showCount = false, bool showNodeHash = false)
        {
            const double SMALLFONT1 = 17;
            const double LARGEFONT1 = 21;
            const double SMALLFONT2 = 15;
            const double LARGEFONT2 = 18;
            const double SMALLFONT3 = 12;
            const double LARGEFONT3 = 14;

            const double SMALLLINE1 = .8;
            const double LARGELINE1 = 1;
            const double SMALLLINE2 = .5;
            const double LARGELINE2 = .85;
            const double SMALLLINE3 = .3;
            const double LARGELINE3 = .7;

            Canvas canvas = new Canvas();
            List<Rect> rectangles = new List<Rect>();

            #region cursor rectangle

            var cursorRect = SelfOrganizingMapsWPF.GetMouseCursorRect();
            rectangles.Add(cursorRect.Item1);

            // This is just for debugging
            //Rectangle cursorVisual = new Rectangle()
            //{
            //    Width = cursorRect.Item1.Width,
            //    Height = cursorRect.Item1.Height,
            //    Fill = new SolidColorBrush(UtilityWPF.GetRandomColor(64, 192, 255)),
            //};

            //Canvas.SetLeft(cursorVisual, cursorRect.Item1.Left);
            //Canvas.SetTop(cursorVisual, cursorRect.Item1.Top);

            //canvas.Children.Add(cursorVisual);

            #endregion

            #region count text

            if (showCount && _result != null && _result.InputsByNode != null)       // it's possible that they are changing things while old graphics are still showing
            {
                StackPanel textPanel = new StackPanel()
                {
                    Orientation = Orientation.Horizontal,
                };

                // "rows "
                OutlinedTextBlock text = SelfOrganizingMapsWPF.GetOutlineText("rows ", SMALLFONT1, SMALLLINE1);
                text.Margin = new Thickness(0, 0, 4, 0);
                textPanel.Children.Add(text);

                // percent
                double percent = -1;
                if (_result.InputsByNode.Length == 0)
                {
                    if (inputs.Length == 0)
                    {
                        percent = 0;
                    }
                    else
                    {
                        percent = -1;
                    }
                }
                else
                {
                    percent = inputs.Length.ToDouble() / _result.InputsByNode.SelectMany(o => o).Count().ToDouble();
                    percent *= 100d;
                }
                text = SelfOrganizingMapsWPF.GetOutlineText(percent.ToStringSignificantDigits(2) + "%", LARGEFONT1, LARGELINE1);
                textPanel.Children.Add(text);

                // Place on canvas
                textPanel.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));       // aparently, the infinity is important to get an accurate desired size
                Size textSize = textPanel.DesiredSize;

                Rect textRect = SelfOrganizingMapsWPF.GetFreeSpot(textSize, new Point(0, 0), new Vector(0, -1), rectangles);
                rectangles.Add(textRect);

                Canvas.SetLeft(textPanel, textRect.Left);
                Canvas.SetTop(textPanel, textRect.Top);

                canvas.Children.Add(textPanel);
            }

            #endregion

            double[] nodeCenter = inputs.Length == 0 ? node.Weights : MathND.GetCenter(inputs.Select(o => o.Weights));

            #region node hash

            if (showNodeHash)
            {
                var nodeCtrl = GetVectorVisual(node.Weights);

                // Place on canvas
                Rect nodeRect = SelfOrganizingMapsWPF.GetFreeSpot(new Size(nodeCtrl.Item2.X, nodeCtrl.Item2.Y), new Point(0, 0), new Vector(0, -1), rectangles);
                rectangles.Add(nodeRect);
//.........这里部分代码省略.........

        private void Print_Click(object sender, RoutedEventArgs e)
        {
            PrintDialog dialog = new PrintDialog();
            if (dialog.ShowDialog() == true)
            {
                StackPanel panel = new StackPanel();
                panel.Margin = new Thickness(15);
                panel.Children.Add((Canvas)XamlReader.Parse(XamlWriter.Save(this.DrawingHost.DrawingControl)));
                TextBlock myBlock = new TextBlock();
                myBlock.Text = "Drawing";
                myBlock.TextAlignment = TextAlignment.Center;
                panel.Children.Add(myBlock);

                panel.Measure(new Size(dialog.PrintableAreaWidth,
                  dialog.PrintableAreaHeight));
                panel.Arrange(new Rect(new System.Windows.Point(0, 0), panel.DesiredSize));
                dialog.PrintTicket.PageOrientation = PageOrientation.Landscape;
                dialog.PrintVisual(panel, "Drawing");
            }
        }

//.........这里部分代码省略.........
            WpfGraphicsUtil.GetScreenDpi(m_oNodeXLControl).Width;

        // The NodeXLControl can't be a child of two logical trees, so
        // disconnect it from its parent after saving the current vertex
        // locations.

        m_oLayoutSaver = new LayoutSaver(m_oNodeXLControl.Graph);

        Debug.Assert(m_oNodeXLControl.Parent is Panel);
        m_oParentPanel = (Panel)m_oNodeXLControl.Parent;
        UIElementCollection oParentChildren = m_oParentPanel.Children;
        m_iChildIndex = oParentChildren.IndexOf(m_oNodeXLControl);
        oParentChildren.Remove(m_oNodeXLControl);

        m_oGraphImageScaler = new GraphImageScaler(m_oNodeXLControl);

        m_oGraphImageCenterer = new NodeXLControl.GraphImageCenterer(
            m_oNodeXLControl);

        // The header and footer are rendered as Label controls.  The legend is
        // rendered as a set of Image controls.

        Label oHeaderLabel, oFooterLabel;
        IEnumerable<Image> oLegendImages;
        Double dHeaderHeight, dTotalLegendHeight, dFooterHeight;

        CreateHeaderOrFooterLabel(headerText, compositeWidth, headerFooterFont,
            out oHeaderLabel, out dHeaderHeight);

        CreateLegendImages(legendControls, compositeWidth, out oLegendImages,
            out dTotalLegendHeight);

        CreateHeaderOrFooterLabel(footerText, compositeWidth, headerFooterFont,
            out oFooterLabel, out dFooterHeight);

        m_oNodeXLControl.Width = compositeWidth;

        m_oNodeXLControl.Height = Math.Max(10,
            compositeHeight - dHeaderHeight - dTotalLegendHeight
            - dFooterHeight);

        // Adjust the control's graph scale so that the graph's vertices and
        // edges will be the same relative size in the composite that they are
        // in the control.

        m_oGraphImageScaler.SetGraphScale(
            (Int32)WpfGraphicsUtil.WpfToPx(compositeWidth, dScreenDpi),
            (Int32)WpfGraphicsUtil.WpfToPx(m_oNodeXLControl.Height, dScreenDpi),
            dScreenDpi);

        // Adjust the NodeXLControl's translate transforms so that the
        // composite will be centered on the same point on the graph that the
        // NodeXLControl is centered on.

        m_oGraphImageCenterer.CenterGraphImage( new Size(compositeWidth,
            m_oNodeXLControl.Height) );

        StackPanel oStackPanel = new StackPanel();
        UIElementCollection oStackPanelChildren = oStackPanel.Children;

        // To avoid a solid black line at the bottom of the header or the top
        // of the footer, which is caused by rounding errors, make the
        // StackPanel background color the same as the header and footer.

        oStackPanel.Background = HeaderFooterBackgroundBrush;

        if (oHeaderLabel != null)
        {
            oStackPanelChildren.Add(oHeaderLabel);
        }

        // Wrap the NodeXLControl in a Grid to clip it.

        m_oGrid = new Grid();
        m_oGrid.Width = m_oNodeXLControl.Width;
        m_oGrid.Height = m_oNodeXLControl.Height;
        m_oGrid.ClipToBounds = true;
        m_oGrid.Children.Add(m_oNodeXLControl);

        oStackPanelChildren.Add(m_oGrid);

        foreach (Image oLegendImage in oLegendImages)
        {
            oStackPanelChildren.Add(oLegendImage);
        }

        if (oFooterLabel != null)
        {
            oStackPanelChildren.Add(oFooterLabel);
        }

        Size oCompositeSize = new Size(compositeWidth, compositeHeight);
        Rect oCompositeRectangle = new Rect(new Point(), oCompositeSize);

        oStackPanel.Measure(oCompositeSize);
        oStackPanel.Arrange(oCompositeRectangle);
        oStackPanel.UpdateLayout();

        return (oStackPanel);
    }

        public void MouseDeviceQueryCursorTest()
        {
            Border child1 = new Border { Background = Brushes.Transparent, Width = 100, Height = 100 };
            Border child2 = new Border { Background = Brushes.Transparent, Width = 100, Height = 100 };

            StackPanel panel = new StackPanel { IsRootElement = true };
            panel.Children.Add(child1);
            panel.Children.Add(child2);

            TestPresentationSource presentationSource = new TestPresentationSource();
            presentationSource.RootElement = panel;

            ((TestApplicationHost)ApplicationHost.Current).PresentationSourceFactory = new TestPresentationSourceFactory(presentationSource);

            panel.Measure(Size.Infinity);
            panel.Arrange(new Rect(panel.DesiredSize));

            child1.Cursor = Cursors.Help;
            child2.Cursor = Cursors.Pen;

            presentationSource.MouseDevice.Activate();
            Assert.AreEqual(Cursors.Arrow, presentationSource.MouseDevice.Cursor);

            presentationSource.MouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 50), 0));
            Assert.AreEqual(Cursors.Help, presentationSource.MouseDevice.Cursor);

            presentationSource.MouseDevice.ProcessRawEvent(new RawMouseEventArgs(new Point(50, 150), 0));
            Assert.AreEqual(Cursors.Pen, presentationSource.MouseDevice.Cursor);

            child2.Cursor = Cursors.Hand;
            Assert.AreEqual(Cursors.Hand, presentationSource.MouseDevice.Cursor);

            panel.Cursor = Cursors.Arrow;
            Assert.AreEqual(Cursors.Hand, presentationSource.MouseDevice.Cursor);

            panel.ForceCursor = true;
            Assert.AreEqual(Cursors.Arrow, presentationSource.MouseDevice.Cursor);

            ((TestApplicationHost)ApplicationHost.Current).PresentationSourceFactory = null;
        }