Пример #1
0
        private static void CreateEffectAdorner(DropInfo dropInfo)
        {
            var template = GetEffectAdornerTemplate(m_DragInfo.VisualSource, dropInfo.Effects, dropInfo.DestinationText);

            if (template != null)
            {
                var rootElement = RootElementFinder.FindRoot(dropInfo.VisualTarget ?? m_DragInfo.VisualSource);

                var adornment = new ContentPresenter();
                adornment.Content         = m_DragInfo.Data;
                adornment.ContentTemplate = template;

                EffectAdorner = new DragAdorner(rootElement, adornment, dropInfo.Effects);
            }
        }
Пример #2
0
        private static void CreateDragAdorner(DropInfo dropInfo)
        {
            var dragInfo         = dropInfo.DragInfo;
            var template         = GetDropAdornerTemplate(dropInfo.VisualTarget) ?? GetDragAdornerTemplate(dragInfo.VisualSource);
            var templateSelector = GetDropAdornerTemplateSelector(dropInfo.VisualTarget) ?? GetDragAdornerTemplateSelector(dragInfo.VisualSource);

            UIElement adornment = null;

            var useDefaultDragAdorner = template == null && templateSelector == null && GetUseDefaultDragAdorner(dragInfo.VisualSource);
            var useVisualSourceItemSizeForDragAdorner = GetUseVisualSourceItemSizeForDragAdorner(dragInfo.VisualSource);

            if (useDefaultDragAdorner)
            {
                template = dragInfo.VisualSourceItem.GetCaptureScreenDataTemplate(dragInfo.VisualSourceFlowDirection);
            }

            if (template != null || templateSelector != null)
            {
                if (dragInfo.Data is IEnumerable && !(dragInfo.Data is string))
                {
                    if (!useDefaultDragAdorner && ((IEnumerable)dragInfo.Data).Cast <object>().Count() <= 10)
                    {
                        var itemsControl = new ItemsControl();
                        itemsControl.ItemsSource          = (IEnumerable)dragInfo.Data;
                        itemsControl.ItemTemplate         = template;
                        itemsControl.ItemTemplateSelector = templateSelector;
                        itemsControl.Tag = dragInfo;

                        if (useVisualSourceItemSizeForDragAdorner)
                        {
                            var bounds = VisualTreeHelper.GetDescendantBounds(dragInfo.VisualSourceItem);
                            itemsControl.SetValue(FrameworkElement.MinWidthProperty, bounds.Width);
                        }

                        // The ItemsControl doesn't display unless we create a grid to contain it.
                        // Not quite sure why we need this...
                        var grid = new Grid();
                        grid.Children.Add(itemsControl);
                        adornment = grid;
                    }
                }
                else
                {
                    var contentPresenter = new ContentPresenter();
                    contentPresenter.Content                 = dragInfo.Data;
                    contentPresenter.ContentTemplate         = template;
                    contentPresenter.ContentTemplateSelector = templateSelector;
                    contentPresenter.Tag = dragInfo;

                    if (useVisualSourceItemSizeForDragAdorner)
                    {
                        var bounds = VisualTreeHelper.GetDescendantBounds(dragInfo.VisualSourceItem);
                        contentPresenter.SetValue(FrameworkElement.MinWidthProperty, bounds.Width);
                        contentPresenter.SetValue(FrameworkElement.MinHeightProperty, bounds.Height);
                    }

                    adornment = contentPresenter;
                }
            }

            if (adornment != null)
            {
                if (useDefaultDragAdorner)
                {
                    adornment.Opacity = GetDefaultDragAdornerOpacity(dragInfo.VisualSource);
                }

                var rootElement = RootElementFinder.FindRoot(dropInfo.VisualTarget ?? dragInfo.VisualSource);
                DragAdorner = new DragAdorner(rootElement, adornment, GetDragAdornerTranslation(dragInfo.VisualSource));
            }
        }
Пример #3
0
        private static void CreateDragAdorner(DropInfo dropInfo)
        {
            var template         = GetDragAdornerTemplate(m_DragInfo.VisualSource);
            var templateSelector = GetDragAdornerTemplateSelector(m_DragInfo.VisualSource);

            UIElement adornment = null;

            var useDefaultDragAdorner = GetUseDefaultDragAdorner(m_DragInfo.VisualSource);
            var useVisualSourceItemSizeForDragAdorner = GetUseVisualSourceItemSizeForDragAdorner(m_DragInfo.VisualSource);

            if (template == null && templateSelector == null && useDefaultDragAdorner)
            {
                var bs = CaptureScreen(m_DragInfo.VisualSourceItem, m_DragInfo.VisualSourceFlowDirection);
                if (bs != null)
                {
                    var factory = new FrameworkElementFactory(typeof(Image));
                    factory.SetValue(Image.SourceProperty, bs);
                    factory.SetValue(RenderOptions.EdgeModeProperty, EdgeMode.Aliased);
                    factory.SetValue(RenderOptions.BitmapScalingModeProperty, BitmapScalingMode.HighQuality);
                    factory.SetValue(FrameworkElement.WidthProperty, bs.Width);
                    factory.SetValue(FrameworkElement.HeightProperty, bs.Height);
                    factory.SetValue(FrameworkElement.HorizontalAlignmentProperty, HorizontalAlignment.Left);
                    factory.SetValue(FrameworkElement.VerticalAlignmentProperty, VerticalAlignment.Top);
                    template = new DataTemplate {
                        VisualTree = factory
                    };
                }
            }

            if (template != null || templateSelector != null)
            {
                if (m_DragInfo.Data is IEnumerable && !(m_DragInfo.Data is string))
                {
                    if (!useDefaultDragAdorner && ((IEnumerable)m_DragInfo.Data).Cast <object>().Count() <= 10)
                    {
                        var itemsControl = new ItemsControl();
                        itemsControl.ItemsSource          = (IEnumerable)m_DragInfo.Data;
                        itemsControl.ItemTemplate         = template;
                        itemsControl.ItemTemplateSelector = templateSelector;

                        if (useVisualSourceItemSizeForDragAdorner)
                        {
                            var bounds = VisualTreeHelper.GetDescendantBounds(m_DragInfo.VisualSourceItem);
                            itemsControl.SetValue(FrameworkElement.MinWidthProperty, bounds.Width);
                        }

                        // The ItemsControl doesn't display unless we create a grid to contain it.
                        // Not quite sure why we need this...
                        var grid = new Grid();
                        grid.Children.Add(itemsControl);
                        adornment = grid;
                    }
                }
                else
                {
                    var contentPresenter = new ContentPresenter();
                    contentPresenter.Content                 = m_DragInfo.Data;
                    contentPresenter.ContentTemplate         = template;
                    contentPresenter.ContentTemplateSelector = templateSelector;

                    if (useVisualSourceItemSizeForDragAdorner)
                    {
                        var bounds = VisualTreeHelper.GetDescendantBounds(m_DragInfo.VisualSourceItem);
                        contentPresenter.SetValue(FrameworkElement.MinWidthProperty, bounds.Width);
                        contentPresenter.SetValue(FrameworkElement.MinHeightProperty, bounds.Height);
                    }

                    adornment = contentPresenter;
                }
            }

            if (adornment != null)
            {
                if (useDefaultDragAdorner)
                {
                    adornment.Opacity = GetDefaultDragAdornerOpacity(m_DragInfo.VisualSource);
                }

                var rootElement = RootElementFinder.FindRoot(dropInfo.VisualTarget ?? m_DragInfo.VisualSource);
                DragAdorner = new DragAdorner(rootElement, adornment);
            }
        }
Пример #4
0
        private static void CreateDragAdorner()
        {
            var template         = GetDragAdornerTemplate(m_DragInfo.VisualSource);
            var templateSelector = GetDragAdornerTemplateSelector(m_DragInfo.VisualSource);

            UIElement adornment = null;

            var useDefaultDragAdorner = GetUseDefaultDragAdorner(m_DragInfo.VisualSource);

            if (template == null && templateSelector == null && useDefaultDragAdorner)
            {
                var bs = CaptureScreen(m_DragInfo.VisualSourceItem, m_DragInfo.VisualSourceFlowDirection);
                if (bs != null)
                {
                    var factory = new FrameworkElementFactory(typeof(Image));
                    factory.SetValue(Image.SourceProperty, bs);
                    factory.SetValue(RenderOptions.EdgeModeProperty, EdgeMode.Aliased);
                    factory.SetValue(RenderOptions.BitmapScalingModeProperty, BitmapScalingMode.HighQuality);
                    factory.SetValue(FrameworkElement.WidthProperty, bs.Width);
                    factory.SetValue(FrameworkElement.HeightProperty, bs.Height);
                    factory.SetValue(FrameworkElement.HorizontalAlignmentProperty, HorizontalAlignment.Left);
                    factory.SetValue(FrameworkElement.VerticalAlignmentProperty, VerticalAlignment.Top);
                    template = new DataTemplate {
                        VisualTree = factory
                    };
                }
            }

            if (template != null || templateSelector != null)
            {
                if (m_DragInfo.Data is IEnumerable && !(m_DragInfo.Data is string))
                {
                    if (!useDefaultDragAdorner && ((IEnumerable)m_DragInfo.Data).Cast <object>().Count() <= 10)
                    {
                        var itemsControl = new ItemsControl();
                        itemsControl.ItemsSource          = (IEnumerable)m_DragInfo.Data;
                        itemsControl.ItemTemplate         = template;
                        itemsControl.ItemTemplateSelector = templateSelector;

                        // The ItemsControl doesn't display unless we create a border to contain it.
                        // Not quite sure why this is...
                        var border = new Border();
                        border.Child = itemsControl;
                        adornment    = border;
                    }
                }
                else
                {
                    var contentPresenter = new ContentPresenter();
                    contentPresenter.Content                 = m_DragInfo.Data;
                    contentPresenter.ContentTemplate         = template;
                    contentPresenter.ContentTemplateSelector = templateSelector;
                    adornment = contentPresenter;
                }
            }

            if (adornment != null)
            {
                if (useDefaultDragAdorner)
                {
                    adornment.Opacity = GetDefaultDragAdornerOpacity(m_DragInfo.VisualSource);
                }

                var rootElement = RootElementFinder.FindRoot(m_DragInfo.VisualSource);
                //                i don't want the fu... windows forms reference
                //                if (rootElement == null) {
                //                    var elementHost = m_DragInfo.VisualSource.GetVisualAncestor<ElementHost>();
                //                    rootElement = elementHost != null ? elementHost.Child : null;
                //                }
                if (rootElement == null)
                {
                    rootElement = m_DragInfo.VisualSource.GetVisualAncestor <UserControl>();
                }

                DragAdorner = new DragAdorner(rootElement, adornment);
            }
        }