private void drawRaster()
{
if (!rasterDrawn)
{
rasterDrawn = true;
var w = ModelTools.GetWidth(ExtendedItem.View);
var h = ModelTools.GetHeight(ExtendedItem.View);
var dash = new DoubleCollection()
{
1, raster - 1
};
for (int i = 0; i <= h; i += raster)
{
var line = new Line()
{
X1 = 0,
Y1 = i,
X2 = w,
Y2 = i,
StrokeThickness = 1,
Stroke = Brushes.Black,
StrokeDashArray = dash,
};
surface.Children.Add(line);
}
}
}
/// <summary>
/// Places the handle from a calculated offset using Mouse Positon
/// </summary>
/// <param name="text"></param>
/// <param name="e"></param>
void PlaceEditor(Visual text, MouseEventArgs e)
{
textBlock = text as TextBlock;
Debug.Assert(textBlock != null);
/* Gets the offset between the top-left corners of the element and the editor*/
placement.XOffset = e.GetPosition(element).X - e.GetPosition(textBlock).X - 2.8;
placement.YOffset = e.GetPosition(element).Y - e.GetPosition(textBlock).Y - 1;
placement.XRelativeToAdornerWidth = 0;
placement.XRelativeToContentWidth = 0;
placement.YRelativeToAdornerHeight = 0;
placement.YRelativeToContentHeight = 0;
editor.SetBinding(textBlock);
/* Change data context of the editor to the TextBlock */
editor.DataContext = textBlock;
/* Set MaxHeight and MaxWidth so that editor doesn't cross the boundaries of the control */
var height = ModelTools.GetHeight(element);
var width = ModelTools.GetWidth(element);
editor.MaxHeight = Math.Max((height - placement.YOffset), 0);
editor.MaxWidth = Math.Max((width - placement.XOffset), 0);
/* Hides the TextBlock in control because of some minor offset in placement, overlaping makes text look fuzzy */
textBlock.Visibility = Visibility.Hidden; //
AdornerPanel.SetPlacement(editor, placement);
RemoveBorder(); // Remove the highlight border.
}
// TODO : Remove all hide/show extensions from here.
void drag_Started(DragListener drag)
{
/* Abort editing Text if it was editing, because it interferes with the undo stack. */
foreach (var extension in this.ExtendedItem.Extensions)
{
if (extension is InPlaceEditorExtension)
{
((InPlaceEditorExtension)extension).AbortEdit();
}
}
drag.Transform = this.ExtendedItem.GetCompleteAppliedTransformationToView();
oldSize = new Size(ModelTools.GetWidth(ExtendedItem.View), ModelTools.GetHeight(ExtendedItem.View));
if (resizeBehavior != null)
{
operation = PlacementOperation.Start(extendedItemArray, PlacementType.Resize);
}
else
{
changeGroup = this.ExtendedItem.Context.OpenGroup("Resize", extendedItemArray);
}
_isResizing = true;
ShowSizeAndHideHandles();
}
// TODO : Remove all hide/show extensions from here.
void drag_Started(DragListener drag)
{
var designPanel = ExtendedItem.Services.DesignPanel as DesignPanel;
if (designPanel != null)
{
var p = VisualTreeHelper.GetParent(designPanel);
while (p != null && !(p is ZoomControl))
{
p = VisualTreeHelper.GetParent(p);
}
zoom = p as ZoomControl;
}
/* Abort editing Text if it was editing, because it interferes with the undo stack. */
foreach (var extension in this.ExtendedItem.Extensions)
{
if (extension is InPlaceEditorExtension)
{
((InPlaceEditorExtension)extension).AbortEdit();
}
}
oldSize = new Size(ModelTools.GetWidth(ExtendedItem.View), ModelTools.GetHeight(ExtendedItem.View));
if (resizeBehavior != null)
{
operation = PlacementOperation.Start(extendedItemArray, PlacementType.Resize);
}
else
{
changeGroup = this.ExtendedItem.Context.OpenGroup("Resize", extendedItemArray);
}
_isResizing = true;
ShowSizeAndHideHandles();
}
/// <summary>
/// Checks whether heigth/width have changed and updates the position of editor
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (textBlock != null)
{
if (e.PropertyName == "Width")
{
placement.XOffset = Mouse.GetPosition((IInputElement)element).X - Mouse.GetPosition(textBlock).X - 2.8;
editor.MaxWidth = Math.Max((ModelTools.GetWidth(element) - placement.XOffset), 0);
}
if (e.PropertyName == "Height")
{
placement.YOffset = Mouse.GetPosition((IInputElement)element).Y - Mouse.GetPosition(textBlock).Y - 1;
editor.MaxHeight = Math.Max((ModelTools.GetHeight(element) - placement.YOffset), 0);
}
AdornerPanel.SetPlacement(editor, placement);
}
}
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));
if (SnaplineMargin > 0)
{
AddLines(containerRect, -SnaplineMargin, 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()
.Except(operation.PlacedItems.Select(f => f.Item))
.Where(x => x.View != null && !GetDisableSnaplines(x.View)))
{
if (item != null)
{
var bounds = GetPositionRelativeToContainer(operation, item);
AddLines(bounds, 0, false);
if (SnaplineMargin > 0)
{
AddLines(bounds, SnaplineMargin, true);
}
AddBaseline(item, bounds, horizontalMap);
}
}
}
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);
foreach (var item in ExtendedItem.ContentProperty.CollectionElements
.Except(operation.PlacedItems.Select(f => f.Item)))
{
var bounds = GetPosition(operation, item);
AddLines(bounds, 0, false);
AddLines(bounds, Margin, true);
AddBaseline(item, bounds, horizontalMap);
}
}