/// <summary>
/// this function determines witch method has to be called based on te mode which the user has selected
/// </summary>
/// <param name="sender">the mouse</param>
/// <param name="e">the date for the selected mouse events</param>
private void Canvas_OnMouseUp(object sender, MouseButtonEventArgs e)
{
switch (_currentMode)
{
case ModeSwitch.Line:
DrawLine();
break;
case ModeSwitch.Ellipse:
DrawEllipse();
break;
case ModeSwitch.Rectangle:
DrawRectangle();
break;
case ModeSwitch.Triangle:
DrawTriangle();
break;
case ModeSwitch.Resize:
if (_selectedShape != null)
{
ResizeShape(_selectedShape);
_selectedShape = null;
}
break;
case ModeSwitch.Move:
if (_selectedShape != null)
{
MoveShape(_selectedShape);
_selectedShape = null;
}
break;
case ModeSwitch.Delete:
if (_selectedShape != null)
{
DeleteShape(_selectedShape);
_selectedShape = null;
}
break;
case ModeSwitch.Selector:
AddToBoxList(_selectedShape);
break;
case ModeSwitch.Display:
if (_selectedShape != null)
{
DisplayGroup(_selectedShape);
_selectedShape = null;
}
break;
default:
return;
}
}
/// <summary>
/// finds the box where the shape is located
/// </summary>
/// <param name="shape">the given shape</param>
/// <param name="head">checks if the shape is not located in the main box</param>
/// <returns>returns the box if a shape is locted in one (witch is not the main box) or null when the shape is not found in a box</returns>
public Boxer FindBox(GodShape shape, bool head = true)
{
foreach (var component in _components)
{
if (component.Equals(shape))
{
if (!head)
{
return(this);
}
return(null);
}
if (component is Boxer box)
{
var result = box.FindBox(shape, false);
if (result != null)
{
return(result);
}
}
}
return(null);
}
private void Canvas_OnMouseDown(object sender, MouseButtonEventArgs e)
{
_startPoint = e.GetPosition(this);
HitTestResult result =
VisualTreeHelper.HitTest(Canvas, Mouse.GetPosition(Canvas));
_selectedShape = result.VisualHit as GodShape;
}
/// <summary>
/// Adds the component to a box
/// </summary>
/// <param name="component">the component to be added</param>
public void Add(GodShape component)
{
component.Depth += "-";
if (component is Boxer)
{
var x = (Boxer)component;
foreach (var comp in x.GetChildren())
{
comp.Depth += "-";
if (comp is Boxer)
{
var y = (Boxer)comp;
y.Indentation();
}
}
}
_components.Add(component);
}
/// <summary>
/// the constructor of DisplayGroup
/// </summary>
/// <param name="component">the selected component</param>
public DisplayGroup(GodShape component)
{
_component = component;
}
/// <summary>
/// the constructor of the Move class
/// </summary>
/// <param name="component">the component that needs to be moved</param>
/// <param name="newPosition">the new position where the component needs to go</param>
/// <param name="oldPosition">the old position of the component</param>
public Move(GodShape component, Vector newPosition, Vector oldPosition)
{
_component = component;
_positionResult = oldPosition + -1 * newPosition;
}
public Ornament(GodShape godShape) : base(godShape)
{
}
/// <summary>
/// the constructor of the Resize class
/// </summary>
/// <param name="component">the component that has to be resized</param>
/// <param name="distance">the distance of the old component and the new component</param>
public Resize(GodShape component, Vector distance)
{
_component = component;
_distance = distance;
}
/// <summary>
/// detaches the component from its box
/// </summary>
/// <param name="component">the component to be detached</param>
public void Detach(GodShape component)
{
_components.Remove(component);
}
/// <summary>
/// Adds the component to a box
/// </summary>
/// <param name="component">the component to be added</param>
/// <param name="depth">the depth if nested deeper in the hierarchy</param>
public void Add(GodShape component, string depth)
{
component.Depth = depth;
_components.Add(component);
}
/// <summary>
/// constructor of the command
/// </summary>
/// <param name="component">the component to be deleted</param>
public Delete(GodShape component)
{
_component = component;
}
public void SetComponent(GodShape component)
{
Component = component;
Width = component.Width;
Height = component.Height;
}
protected Decorator(GodShape p)
{
Component = p;
}
/// <summary>
/// the constructor of the Draw class
/// </summary>
/// <param name="component"></param>
public Draw(GodShape component)
{
_component = component;
}
