Esempio n. 1
0
        public RubberbandAdorner(DesignerCanvas designerCanvas, Point?dragStartPoint)
            : base(designerCanvas)
        {
            this.designerCanvas = designerCanvas;
            this.startPoint     = dragStartPoint;

            this.adornerCanvas            = new Canvas();
            this.adornerCanvas.Background = Brushes.Transparent;
            this.visuals = new VisualCollection(this);
            this.visuals.Add(this.adornerCanvas);

            this.rubberband                 = new Rectangle();
            this.rubberband.Stroke          = Brushes.Navy;
            this.rubberband.StrokeThickness = 1;
            this.rubberband.StrokeDashArray = new DoubleCollection(new double[] { 2 });

            this.adornerCanvas.Children.Add(this.rubberband);
        }
Esempio n. 2
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        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();

            if (this.ScrollViewer == null)
            {
                return;
            }

            this.designerCanvas = this.ScrollViewer.Content as DesignerCanvas;
            if (this.designerCanvas == null)
            {
                throw new Exception("DesignerCanvas must not be null!");
            }

            this.zoomThumb = Template.FindName("PART_ZoomThumb", this) as Thumb;
            if (this.zoomThumb == null)
            {
                throw new Exception("PART_ZoomThumb template is missing!");
            }

            this.zoomCanvas = Template.FindName("PART_ZoomCanvas", this) as Canvas;
            if (this.zoomCanvas == null)
            {
                throw new Exception("PART_ZoomCanvas template is missing!");
            }

            this.zoomSlider = Template.FindName("PART_ZoomSlider", this) as Slider;
            if (this.zoomSlider == null)
            {
                throw new Exception("PART_ZoomSlider template is missing!");
            }

            this.designerCanvas.LayoutUpdated += new EventHandler(this.DesignerCanvas_LayoutUpdated);

            this.zoomThumb.DragDelta += new DragDeltaEventHandler(this.Thumb_DragDelta);

            this.zoomSlider.ValueChanged += new RoutedPropertyChangedEventHandler <double>(this.ZoomSlider_ValueChanged);

            this.scaleTransform = new ScaleTransform();
            this.designerCanvas.LayoutTransform = this.scaleTransform;
        }
Esempio n. 3
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        protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
        {
            base.OnPreviewMouseDown(e);
            DesignerCanvas designer = VisualTreeHelper.GetParent(this) as DesignerCanvas;

            if (designer != null)
            {
                if ((Keyboard.Modifiers & (ModifierKeys.Shift | ModifierKeys.Control)) != ModifierKeys.None)
                {
                    this.IsSelected = !this.IsSelected;
                }
                else
                {
                    if (!this.IsSelected)
                    {
                        designer.DeselectAll();
                        this.IsSelected = true;
                    }
                }
            }

            e.Handled = false;
        }
Esempio n. 4
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        protected override void OnDrop(DragEventArgs e)
        {
            base.OnDrop(e);
            string xamlString = e.Data.GetData("DESIGNER_ITEM") as string;

            if (!String.IsNullOrEmpty(xamlString))
            {
                DesignerItem     newItem = null;
                FrameworkElement content = XamlReader.Load(XmlReader.Create(new StringReader(xamlString))) as FrameworkElement;

                if (content != null)
                {
                    newItem         = new DesignerItem();
                    newItem.Content = content;

                    Point position = e.GetPosition(this);
                    if (content.MinHeight != 0 && content.MinWidth != 0)
                    {
                        newItem.Width  = content.MinWidth * 2;;
                        newItem.Height = content.MinHeight * 2;
                    }
                    else
                    {
                        newItem.Width  = 65;
                        newItem.Height = 65;
                    }
                    DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X - newItem.Width / 2));
                    DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y - newItem.Height / 2));
                    this.Children.Add(newItem);

                    this.DeselectAll();
                    newItem.IsSelected = true;
                }

                e.Handled = true;
            }
        }