/// <inheritdoc />
public Task ExecuteUserActionAsync()
{
if (UndoStack.Count > 0)
{
List <PaintBase> newState = UndoStack.Pop();
RedoStack.Push(ShapeList.DeepCopy());
ShapeList.Clear();
ShapeList.AddRange(newState);
_page.Draw();
_page.UpdateList();
}
return(Task.CompletedTask);
}
/// <inheritdoc />
public Task ExecuteUserActionAsync()
{
// Get all selected elements that are of the type PaintGroup
List <PaintBase> selected = ShapeList.Where(pb => pb.Selected &&
!(pb is PaintShape) &&
(pb is PaintGroup || (pb as TextDecoration).InnerPaintBase is PaintGroup)).ToList();
// Only run if 1 or more groups are selected
if (selected.Count > 0)
{
// Add undo entry to the undo stack
UndoStack.Push(ShapeList.DeepCopy());
RedoStack.Clear();
foreach (PaintBase paintBase in selected)
{
PaintBase element = paintBase;
// Check if element is wrapped in a decorator
if (element is TextDecoration decor)
{
// If so, get inner group
element = decor.GetDrawable();
}
if (element is PaintGroup group)
{
// Remove group from canvas
ShapeList.Remove(paintBase);
// Add the groups children back onto the canvas
foreach (PaintBase groupChild in group.Children.ToList())
{
group.Remove(groupChild);
ShapeList.Add(groupChild);
}
}
}
_page.Draw();
_page.UpdateList();
}
return(Task.CompletedTask);
}
/// <inheritdoc />
public Task ExecuteUserActionAsync()
{
// Add undo entry
UndoStack.Push(ShapeList.DeepCopy());
RedoStack.Clear();
// Get selected items
List <PaintBase> selected = ShapeList.Where(pb => pb.Selected).ToList();
foreach (PaintBase paintBase in selected)
{
ShapeList.Remove(paintBase);
}
_page.Draw();
_page.UpdateList();
return(Task.CompletedTask);
}
/// <inheritdoc />
public Task ExecuteUserActionAsync()
{
if (RedoStack.Count > 0)
{
// Pop prior state from stack
List <PaintBase> newState = RedoStack.Pop();
// Push current state onto the undo stack
UndoStack.Push(ShapeList.DeepCopy());
// Add prior state as current state
ShapeList.Clear();
ShapeList.AddRange(newState);
_page.Draw();
_page.UpdateList();
}
return(Task.CompletedTask);
}
public Task ExecuteUserActionAsync()
{
// Get selected items from ShapeList
List <PaintBase> selected = ShapeList.Where(pb => pb.Selected).ToList();
// Only group if 2 or more items are selected
if (selected.Count > 1)
{
// Add undo entry
UndoStack.Push(ShapeList.DeepCopy());
RedoStack.Clear();
// Create new group
PaintGroup newGroup = new PaintGroup()
{
Selected = true
};
// Add selected items to the group
// Remove selected items from the canvas itself
foreach (PaintBase paintBase in selected)
{
ShapeList.Remove(paintBase);
paintBase.Selected = false;
newGroup.Add(paintBase);
}
ShapeList.Add(newGroup);
_page.Draw();
_page.UpdateList();
}
return(Task.CompletedTask);
}