public override void LeaveContainer(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
base.LeaveContainer(operation);
foreach (PlacementInformation info in operation.PlacedItems) {
if (info.Item.ComponentType == typeof(System.Windows.Controls.ColumnDefinition)) {
// TODO: combine the width of the deleted column with the previous column
this.ExtendedItem.Properties["ColumnDefinitions"].CollectionElements.Remove(info.Item);
} else if (info.Item.ComponentType == typeof(System.Windows.Controls.RowDefinition)) {
this.ExtendedItem.Properties["RowDefinitions"].CollectionElements.Remove(info.Item);
} else {
info.Item.Properties.GetAttachedProperty(System.Windows.Controls.Grid.RowProperty).Reset();
info.Item.Properties.GetAttachedProperty(System.Windows.Controls.Grid.ColumnProperty).Reset();
info.Item.Properties.GetAttachedProperty(System.Windows.Controls.Grid.RowSpanProperty).Reset();
info.Item.Properties.GetAttachedProperty(System.Windows.Controls.Grid.ColumnSpanProperty).Reset();
HorizontalAlignment ha = (HorizontalAlignment)info.Item.Properties[FrameworkElement.HorizontalAlignmentProperty].ValueOnInstance;
VerticalAlignment va = (VerticalAlignment)info.Item.Properties[FrameworkElement.VerticalAlignmentProperty].ValueOnInstance;
if (ha == HorizontalAlignment.Stretch)
info.Item.Properties[FrameworkElement.WidthProperty].SetValue(info.Bounds.Width);
if (va == VerticalAlignment.Stretch)
info.Item.Properties[FrameworkElement.HeightProperty].SetValue(info.Bounds.Height);
}
}
}
public override Rect GetPosition(PlacementOperation operation, DesignItem item)
{
UIElement child = item.View;
if (child == null)
return Rect.Empty;
double x, y;
if (IsPropertySet(child, Canvas.LeftProperty) || !IsPropertySet(child, Canvas.RightProperty)) {
x = GetCanvasProperty(child, Canvas.LeftProperty);
} else {
x = extendedComponent.ActualWidth - GetCanvasProperty(child, Canvas.RightProperty) - PlacementOperation.GetRealElementSize(child).Width;
}
if (IsPropertySet(child, Canvas.TopProperty) || !IsPropertySet(child, Canvas.BottomProperty)) {
y = GetCanvasProperty(child, Canvas.TopProperty);
} else {
y = extendedComponent.ActualHeight - GetCanvasProperty(child, Canvas.BottomProperty) - PlacementOperation.GetRealElementSize(child).Height;
}
var p = new Point(x, y);
//Fixes, Empty Image Resized to 0
//return new Rect(p, child.RenderSize);
return new Rect(p, PlacementOperation.GetRealElementSize(item.View));
}
public override void EnterContainer(PlacementOperation operation)
{
enteredIntoNewContainer=true;
grid.UpdateLayout();
base.EnterContainer(operation);
if (operation.Type == PlacementType.PasteItem) {
foreach (PlacementInformation info in operation.PlacedItems) {
var margin = (Thickness)info.Item.Properties.GetProperty(FrameworkElement.MarginProperty).ValueOnInstance;
var horizontalAlignment = (HorizontalAlignment)info.Item.Properties.GetProperty(FrameworkElement.HorizontalAlignmentProperty).ValueOnInstance;
var verticalAlignment = (VerticalAlignment)info.Item.Properties.GetProperty(FrameworkElement.VerticalAlignmentProperty).ValueOnInstance;
if (horizontalAlignment == HorizontalAlignment.Left)
margin.Left += PlacementOperation.PasteOffset;
else if (horizontalAlignment == HorizontalAlignment.Right)
margin.Right -= PlacementOperation.PasteOffset;
if (verticalAlignment == VerticalAlignment.Top)
margin.Top += PlacementOperation.PasteOffset;
else if (verticalAlignment == VerticalAlignment.Bottom)
margin.Bottom -= PlacementOperation.PasteOffset;
info.Item.Properties.GetProperty(FrameworkElement.MarginProperty).SetValue(margin);
}
}
}
public override void BeforeSetPosition(PlacementOperation operation)
{
base.BeforeSetPosition(operation);
if (surface == null) return;
DesignPanel designPanel = ExtendedItem.Services.DesignPanel as DesignPanel;
if (designPanel == null || !designPanel.UseRasterPlacement)
return;
if (System.Windows.Input.Keyboard.IsKeyDown(Key.LeftCtrl))
{
surface.Children.Clear();
rasterDrawn = false;
return;
}
drawRaster();
var bounds = operation.PlacedItems[0].Bounds;
bounds.Y = ((int)bounds.Y/raster)*raster;
bounds.X = ((int)bounds.X/raster)*raster;
bounds.Width = Convert.ToInt32((bounds.Width/raster))*raster;
bounds.Height = Convert.ToInt32((bounds.Height/raster))*raster;
operation.PlacedItems[0].Bounds = bounds;
}
public override void BeginPlacement(PlacementOperation operation)
{
base.BeginPlacement(operation);
DesignPanel designPanel = ExtendedItem.Services.DesignPanel as DesignPanel;
if (designPanel != null)
raster = designPanel.RasterWidth;
CreateSurface(operation);
}
public override void EnterContainer(PlacementOperation operation)
{
base.EnterContainer(operation);
foreach (PlacementInformation info in operation.PlacedItems) {
info.Item.Properties[FrameworkElement.HorizontalAlignmentProperty].Reset();
info.Item.Properties[FrameworkElement.VerticalAlignmentProperty].Reset();
info.Item.Properties[FrameworkElement.MarginProperty].Reset();
if (operation.Type == PlacementType.PasteItem) {
info.Item.Properties.GetAttachedProperty(Canvas.LeftProperty).SetValue(((double)info.Item.Properties.GetAttachedProperty(Canvas.LeftProperty).ValueOnInstance) + PlacementOperation.PasteOffset);
info.Item.Properties.GetAttachedProperty(Canvas.TopProperty).SetValue(((double)info.Item.Properties.GetAttachedProperty(Canvas.TopProperty).ValueOnInstance) + PlacementOperation.PasteOffset);
}
}
}
public virtual bool CanEnterContainer(PlacementOperation operation, bool shouldAlwaysEnter)
{
var canEnter = internalCanEnterContainer(operation);
if (canEnter && !shouldAlwaysEnter && !System.Windows.Input.Keyboard.IsKeyDown(Key.LeftAlt) && !System.Windows.Input.Keyboard.IsKeyDown(Key.RightAlt))
{
var b = new Rect(0, 0, ((FrameworkElement)this.ExtendedItem.View).ActualWidth, ((FrameworkElement)this.ExtendedItem.View).ActualHeight);
InfoTextEnterArea.Start(ref infoTextEnterArea, this.Services, this.ExtendedItem.View, b, Translations.Instance.PressAltText);
return false;
}
return canEnter;
}
public override void BeginPlacement(PlacementOperation operation)
{
base.BeginPlacement(operation);
if (_rects.Count > 0)
_rects.Clear();
/* Add Rect of all children to _rects */
var children = this.ExtendedItem.ContentProperty.CollectionElements;
foreach (var child in children) {
Point p = child.View.TranslatePoint(new Point(0, 0), this.ExtendedItem.View);
_rects.Add(new Rect(p, child.View.RenderSize));
}
if (_adornerPanel != null && this.ExtendedItem.Services.DesignPanel.Adorners.Contains(_adornerPanel))
this.ExtendedItem.Services.DesignPanel.Adorners.Remove(_adornerPanel);
/* Place the Rectangle */
_adornerPanel = new AdornerPanel();
_rectangle = new Rectangle();
_adornerPanel.SetAdornedElement(this.ExtendedItem.View, this.ExtendedItem);
_adornerPanel.Children.Add(_rectangle);
this.ExtendedItem.Services.DesignPanel.Adorners.Add(_adornerPanel);
}
/// <summary>
/// Starts a new placement operation that changes the placement of <paramref name="placedItems"/>.
/// </summary>
/// <param name="placedItems">The items to be placed.</param>
/// <param name="type">The type of the placement.</param>
/// <returns>A PlacementOperation object.</returns>
/// <remarks>
/// You MUST call either <see cref="Abort"/> or <see cref="Commit"/> on the returned PlacementOperation
/// once you are done with it, otherwise a ChangeGroup will be left open and Undo/Redo will fail to work!
/// </remarks>
public static PlacementOperation Start(ICollection <DesignItem> placedItems, PlacementType type)
{
if (placedItems == null)
{
throw new ArgumentNullException("placedItems");
}
if (type == null)
{
throw new ArgumentNullException("type");
}
DesignItem[] items = placedItems.ToArray();
if (items.Length == 0)
{
throw new ArgumentException("placedItems.Length must be > 0");
}
PlacementOperation op = new PlacementOperation(items, type);
try {
if (op.currentContainerBehavior == null)
{
throw new PlacementOperationException("Starting the operation is not supported");
}
op.currentContainerBehavior.BeginPlacement(op);
foreach (PlacementInformation info in op.placedItems)
{
info.OriginalBounds = op.currentContainerBehavior.GetPosition(op, info.Item);
info.Bounds = info.OriginalBounds;
}
} catch (Exception ex) {
Debug.WriteLine(ex.ToString());
op.changeGroup.Abort();
throw;
}
return(op);
}
public override void EnterContainer(PlacementOperation operation)
{
base.EnterContainer(operation);
CreateSurface(operation);
}
public override void EndPlacement(PlacementOperation operation)
{
base.EndPlacement(operation);
DeleteSurface();
}
public override void BeginPlacement(PlacementOperation operation)
{
base.BeginPlacement(operation);
CreateSurface(operation);
}
public override void EndPlacement(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
base.EndPlacement(operation);
}
public virtual void EnterContainer(PlacementOperation operation)
{
if (ExtendedItem.ContentProperty.IsCollection) {
foreach (var info in operation.PlacedItems) {
ExtendedItem.ContentProperty.CollectionElements.Add(info.Item);
}
} else {
ExtendedItem.ContentProperty.SetValue(operation.PlacedItems[0].Item);
}
if (operation.Type == PlacementType.AddItem) {
foreach (var info in operation.PlacedItems) {
SetPosition(info);
}
}
}
void CreateSurface(PlacementOperation operation)
{
if (ExtendedItem.Services.GetService<IDesignPanel>() != null) {
surface = new Canvas();
adornerPanel = new AdornerPanel();
adornerPanel.SetAdornedElement(ExtendedItem.View, ExtendedItem);
AdornerPanel.SetPlacement(surface, AdornerPlacement.FillContent);
adornerPanel.Children.Add(surface);
ExtendedItem.Services.DesignPanel.Adorners.Add(adornerPanel);
BuildMaps(operation);
if (operation.Type != PlacementType.Resize && operation.PlacedItems.Count == 1) {
baseline = GetBaseline(operation.PlacedItems[0].Item.View);
}
}
}
/// <summary>
/// Starts a new placement operation that changes the placement of <paramref name="placedItems"/>.
/// </summary>
/// <param name="placedItems">The items to be placed.</param>
/// <param name="type">The type of the placement.</param>
/// <returns>A PlacementOperation object.</returns>
/// <remarks>
/// You MUST call either <see cref="Abort"/> or <see cref="Commit"/> on the returned PlacementOperation
/// once you are done with it, otherwise a ChangeGroup will be left open and Undo/Redo will fail to work!
/// </remarks>
public static PlacementOperation Start(ICollection<DesignItem> placedItems, PlacementType type)
{
if (placedItems == null)
throw new ArgumentNullException("placedItems");
if (type == null)
throw new ArgumentNullException("type");
DesignItem[] items = placedItems.ToArray();
if (items.Length == 0)
throw new ArgumentException("placedItems.Length must be > 0");
PlacementOperation op = new PlacementOperation(items, type);
try {
if (op.currentContainerBehavior == null)
throw new InvalidOperationException("Starting the operation is not supported");
op.currentContainerBehavior.BeginPlacement(op);
foreach (PlacementInformation info in op.placedItems) {
info.OriginalBounds = op.currentContainerBehavior.GetPosition(op, info.Item);
info.Bounds = info.OriginalBounds;
}
} catch (Exception ex) {
Debug.WriteLine(ex.ToString());
op.changeGroup.Abort();
throw;
}
return op;
}
public override void EndPlacement(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
enteredIntoNewContainer=false;
base.EndPlacement(operation);
}
public virtual void BeforeSetPosition(PlacementOperation operation)
{
}
public virtual void BeginPlacement(PlacementOperation operation)
{
}
private bool internalCanEnterContainer(PlacementOperation operation)
{
InfoTextEnterArea.Stop(ref infoTextEnterArea);
if (ExtendedItem.Component is Expander)
{
if (!((Expander) ExtendedItem.Component).IsExpanded)
{
((Expander) ExtendedItem.Component).IsExpanded = true;
}
}
if (ExtendedItem.Component is UserControl && ExtendedItem.ComponentType != typeof(UserControl))
return false;
if (ExtendedItem.Component is Decorator)
return ((Decorator)ExtendedItem.Component).Child == null;
if (ExtendedItem.ContentProperty.IsCollection)
return CollectionSupport.CanCollectionAdd(ExtendedItem.ContentProperty.ReturnType,
operation.PlacedItems.Select(p => p.Item.Component));
if (ExtendedItem.ContentProperty.ReturnType == typeof(string))
return false;
if (!ExtendedItem.ContentProperty.IsSet)
return true;
object value = ExtendedItem.ContentProperty.ValueOnInstance;
// don't overwrite non-primitive values like bindings
return ExtendedItem.ContentProperty.Value == null && (value is string && string.IsNullOrEmpty(value as string));
}
public virtual void LeaveContainer(PlacementOperation operation)
{
if (ExtendedItem.ContentProperty.IsCollection) {
foreach (var info in operation.PlacedItems) {
ExtendedItem.ContentProperty.CollectionElements.Remove(info.Item);
}
} else {
ExtendedItem.ContentProperty.Reset();
}
}
public virtual Rect GetPosition(PlacementOperation operation, DesignItem item)
{
if (item.View == null)
return Rect.Empty;
var p = item.View.TranslatePoint(new Point(), operation.CurrentContainer.View);
return new Rect(p, PlacementOperation.GetRealElementSize(item.View));
}
public override void LeaveContainer(PlacementOperation operation)
{
base.LeaveContainer(operation);
DeleteSurface();
}
public virtual void EndPlacement(PlacementOperation operation)
{
InfoTextEnterArea.Stop(ref infoTextEnterArea);
if (operation.Type != PlacementType.Delete)
{
this.ExtendedItem.Services.Selection.SetSelectedComponents(null);
this.ExtendedItem.Services.Selection.SetSelectedComponents(operation.PlacedItems.Select(x => x.Item).ToList());
}
}
void BuildMaps(PlacementOperation operation)
{
horizontalMap = new List<Snapline>();
verticalMap = new List<Snapline>();
var containerRect = new Rect(0, 0, ModelTools.GetWidth(ExtendedItem.View), ModelTools.GetHeight(ExtendedItem.View));
AddLines(containerRect, -Margin, false);
AddLines(containerRect, 0, false);
AddContainerSnaplines(containerRect, horizontalMap, verticalMap);
if (!CanPlace(operation.PlacedItems.Select(x => x.Item), operation.Type, PlacementAlignment.Center))
return;
foreach (var item in AllDesignItems() /* ExtendedItem.ContentProperty.CollectionElements */
.Except(operation.PlacedItems.Select(f => f.Item))
.Where(x=> x.View != null && !GetDisableSnaplines(x.View))) {
if (item != null) {
var bounds = GetPosition(operation, item);
AddLines(bounds, 0, false);
AddLines(bounds, Margin, true);
AddBaseline(item, bounds, horizontalMap);
}
}
}
void CreateSurface(PlacementOperation operation)
{
if (ExtendedItem.Services.GetService<IDesignPanel>() != null)
{
surface = new Canvas();
adornerPanel = new AdornerPanel();
adornerPanel.SetAdornedElement(ExtendedItem.View, ExtendedItem);
AdornerPanel.SetPlacement(surface, AdornerPlacement.FillContent);
adornerPanel.Children.Add(surface);
ExtendedItem.Services.DesignPanel.Adorners.Add(adornerPanel);
}
}
public override void BeforeSetPosition(PlacementOperation operation)
{
base.BeforeSetPosition(operation);
if (surface == null) return;
DesignPanel designPanel = ExtendedItem.Services.DesignPanel as DesignPanel;
if (designPanel == null || !designPanel.UseSnaplinePlacement)
return;
surface.Children.Clear();
if (System.Windows.Input.Keyboard.IsKeyDown(Key.LeftCtrl)) return;
Rect bounds = Rect.Empty;
foreach (var item in operation.PlacedItems) {
bounds.Union(item.Bounds);
}
var horizontalInput = new List<Snapline>();
var verticalInput = new List<Snapline>();
var info = operation.PlacedItems[0];
if (operation.Type == PlacementType.Resize)
{
AddLines(bounds, 0, false, horizontalInput, verticalInput, info.ResizeThumbAlignment);
}
else
{
AddLines(bounds, 0, false, horizontalInput, verticalInput, null);
if (baseline.HasValue)
{
var textOffset = bounds.Top + baseline.Value;
horizontalInput.Add(new Snapline() { Group = 1, Offset = textOffset, Start = bounds.Left, End = bounds.Right });
}
}
// debug
//foreach (var t in horizontalMap.Concat(horizontalInput)) {
// surface.Children.Add(new Line() { X1 = t.Start, X2 = t.End, Y1 = t.Offset, Y2 = t.Offset, Stroke = Brushes.Black });
//}
//foreach (var t in verticalMap.Concat(verticalInput)) {
// surface.Children.Add(new Line() { X1 = t.Offset, X2 = t.Offset, Y1 = t.Start , Y2 = t.End, Stroke = Brushes.Black });
//}
//return;
List<Snapline> drawLines;
double delta;
if (Snap(horizontalInput, horizontalMap, Accuracy, out drawLines, out delta))
{
if (operation.Type == PlacementType.Resize)
{
if (info.ResizeThumbAlignment != null && info.ResizeThumbAlignment.Value.Vertical == VerticalAlignment.Top)
{
bounds.Y += delta;
bounds.Height = Math.Max(0, bounds.Height - delta);
}
else
{
bounds.Height = Math.Max(0, bounds.Height + delta);
}
info.Bounds = bounds;
}
else
{
foreach (var item in operation.PlacedItems)
{
var r = item.Bounds;
r.Y += delta;
item.Bounds = r;
}
}
foreach (var d in drawLines)
{
DrawLine(d.Start, d.Offset + d.DrawOffset, d.End, d.Offset + d.DrawOffset);
}
}
if (Snap(verticalInput, verticalMap, Accuracy, out drawLines, out delta))
{
if (operation.Type == PlacementType.Resize)
{
if (info.ResizeThumbAlignment != null && info.ResizeThumbAlignment.Value.Horizontal == HorizontalAlignment.Left)
{
bounds.X += delta;
bounds.Width = Math.Max(0, bounds.Width - delta);
}
else
{
bounds.Width = Math.Max(0, bounds.Width + delta);
}
info.Bounds = bounds;
}
else
{
foreach (var item in operation.PlacedItems)
{
var r = item.Bounds;
r.X += delta;
item.Bounds = r;
}
}
foreach (var d in drawLines)
{
DrawLine(d.Offset + d.DrawOffset, d.Start, d.Offset + d.DrawOffset, d.End);
}
}
}
public override void LeaveContainer(PlacementOperation operation)
{
GrayOutDesignerExceptActiveArea.Stop(ref grayOut);
base.LeaveContainer(operation);
foreach (PlacementInformation info in operation.PlacedItems) {
info.Item.Properties.GetAttachedProperty(Canvas.LeftProperty).Reset();
info.Item.Properties.GetAttachedProperty(Canvas.TopProperty).Reset();
}
}
internal PlacementInformation(DesignItem item, PlacementOperation operation)
{
this.item = item;
this.operation = operation;
}
internal PlacementInformation(DesignItem item, PlacementOperation operation)
{
this.item = item;
this.operation = operation;
}
/// <summary>
/// Try to insert new components into the container.
/// </summary>
/// <param name="container">The container that should become the parent of the components.</param>
/// <param name="placedItems">The components to add to the container.</param>
/// <param name="positions">The rectangle specifying the position the element should get.</param>
/// <param name="type">The type </param>
/// <returns>The operation that inserts the new components, or null if inserting is not possible.</returns>
public static PlacementOperation TryStartInsertNewComponents(DesignItem container, IList<DesignItem> placedItems, IList<Rect> positions, PlacementType type)
{
if (container == null)
throw new ArgumentNullException("container");
if (placedItems == null)
throw new ArgumentNullException("placedItems");
if (positions == null)
throw new ArgumentNullException("positions");
if (type == null)
throw new ArgumentNullException("type");
if (placedItems.Count == 0)
throw new ArgumentException("placedItems.Count must be > 0");
if (placedItems.Count != positions.Count)
throw new ArgumentException("positions.Count must be = placedItems.Count");
DesignItem[] items = placedItems.ToArray();
PlacementOperation op = new PlacementOperation(items, type);
try {
for (int i = 0; i < items.Length; i++) {
op.placedItems[i].OriginalBounds = op.placedItems[i].Bounds = positions[i];
}
op.currentContainer = container;
op.currentContainerBehavior = container.GetBehavior<IPlacementBehavior>();
if (op.currentContainerBehavior == null || !op.currentContainerBehavior.CanEnterContainer(op, true)) {
op.changeGroup.Abort();
return null;
}
op.currentContainerBehavior.EnterContainer(op);
} catch (Exception ex) {
Debug.WriteLine(ex.ToString());
op.changeGroup.Abort();
throw;
}
return op;
}
public virtual bool CanLeaveContainer(PlacementOperation operation)
{
return true;
}
