private void AddIDToDatabase(string name, AnchorID id)
{
if (!_database.ContainsKey(name))
{
_database.Add(name, id);
}
}
public AnchorManager()
{
// Инициализируем вспомогательные поля объекта
m_activeAnchorID = AnchorID.None;
m_normalColor = Colors.Green;
m_radius = 3.0;
// Создаём девять якорей
m_anchors = new Dictionary <AnchorID, Shape>();
Point center = new Point(0, 0);
AnchorID[] ids =
{
AnchorID.TopLeft, AnchorID.TopCenter, AnchorID.TopRight,
AnchorID.MiddleLeft, AnchorID.MiddleCenter, AnchorID.MiddleRight,
AnchorID.BottomLeft, AnchorID.BottomCenter, AnchorID.BottomRight
};
for (int i = 0; i < ids.Length; i++)
{
Shape anchor = new System.Windows.Shapes.Rectangle();
anchor.Stroke = new SolidColorBrush(m_normalColor);
anchor.StrokeThickness = 2;
m_anchors.Add(ids[i], anchor);
SetAnchorCenter(ids[i], center);
}
}
private IARAnchor Find(AnchorID anchorID)
{
if (_database.ContainsKey(anchorID))
{
return(_database[anchorID]);
}
return(null);
}
private bool IsActive(AnchorID anchorID)
{
if (_activeDatabase.TryGetValue(anchorID, out bool active))
{
return(active);
}
return(false);
}
// Метод возвращает координаты центра текущего активного якоря
public Point GetAnchorCenter(AnchorID anchorID)
{
Point pt = new Point();
if (anchorID != AnchorID.None)
{
pt.X = Canvas.GetLeft(m_anchors[anchorID]) + m_radius;
pt.Y = Canvas.GetTop(m_anchors[anchorID]) + m_radius;
}
return(pt);
}
private void Activate(AnchorID anchorID, bool active)
{
if (_activeDatabase.ContainsKey(anchorID))
{
_activeDatabase[anchorID] = active;
}
else
{
_activeDatabase.Add(anchorID, active);
}
}
IARAnchor IARAnchorRepository.Create(AnchorID anchorID)
{
IARAnchor anchor = Find(anchorID);
if (anchor == null)
{
anchor = _factory.Create(anchorID);
}
return(anchor);
}
private Color m_normalColor; // цвет маркера по умолчанию
private void SetAnchorCenter(AnchorID anchorID, Point center)
{
double width = 2 * m_radius;
double height = 2 * m_radius;
double left = center.X - m_radius;
double top = center.Y - m_radius;
m_anchors[anchorID].Width = width;
m_anchors[anchorID].Height = height;
Canvas.SetLeft(m_anchors[anchorID], left);
Canvas.SetTop(m_anchors[anchorID], top);
//m_anchors[anchorID].BringIntoView();
}
IARAnchor IARAnchorSystem.Create()
{
AnchorID id = CreateNewID();
return(_repository.Create(id));
}
IARAnchor IARAnchorSystem.Find(AnchorID anchorID) => _repository.Find(anchorID);
public void Construct(AnchorID anchorID)
{
_anchorID = anchorID;
name = $"{anchorID}";
}
IARAnchor IARAnchorService.Find(AnchorID anchorID) => _system.Find(anchorID);
IARAnchor IARAnchorRepository.Find(AnchorID anchorID) => Find(anchorID);
// Метод обновляет состояние якорей по заданным координатам
// рамки выделения rubber и параметрам мышки e. Следует вызывать
// из обработчика события мыши OnMouseMove().
public void Update(RubberBandManager rubber, Point mousePoint,
bool IsMouseCaptured)
{
// Определяем радиус якорей
System.Drawing.Rectangle clip = rubber.GetClientRect();
if (clip.Width < 15 || clip.Height < 15)
{
m_radius = 2.0;
}
else
{
m_radius = 3.0;
}
// Определяем координаты всех якорей
Point topleft = rubber.currentTopLeftCorner;
Point bottomright = rubber.currentBottomRightCorner;
double widthStep = 0.5 * (bottomright.X - topleft.X);
double heightStep = 0.5 * (bottomright.Y - topleft.Y);
Point center = topleft;
SetAnchorCenter(AnchorID.TopLeft, center);
center.X = topleft.X + widthStep;
center.Y = topleft.Y;
SetAnchorCenter(AnchorID.TopCenter, center);
center.X = topleft.X + 2 * widthStep;
center.Y = topleft.Y;
SetAnchorCenter(AnchorID.TopRight, center);
center.X = topleft.X;
center.Y = topleft.Y + heightStep;
SetAnchorCenter(AnchorID.MiddleLeft, center);
center.X = topleft.X + widthStep;
center.Y = topleft.Y + heightStep;
SetAnchorCenter(AnchorID.MiddleCenter, center);
center.X = topleft.X + 2 * widthStep;
center.Y = topleft.Y + heightStep;
SetAnchorCenter(AnchorID.MiddleRight, center);
center.X = topleft.X;
center.Y = topleft.Y + 2 * heightStep;
SetAnchorCenter(AnchorID.BottomLeft, center);
center.X = topleft.X + widthStep;
center.Y = topleft.Y + 2 * heightStep;
SetAnchorCenter(AnchorID.BottomCenter, center);
center = bottomright;
SetAnchorCenter(AnchorID.BottomRight, center);
// При необходимости обновляем индекс активного якоря
if (!IsMouseCaptured)
{
// Отыскиваем ближайший к указателю мыши якорь
AnchorID nearestID = AnchorID.None;
double nearestDist = 1e6;
foreach (KeyValuePair <AnchorID, Shape> record in m_anchors)
{
center = GetAnchorCenter(record.Key);
double distX = Math.Abs(center.X - mousePoint.X);
double distY = Math.Abs(center.Y - mousePoint.Y);
double dist = Math.Sqrt(distX * distX + distY * distY);
if (dist < nearestDist)
{
nearestDist = dist;
nearestID = record.Key;
}
}
// Сравниваем расстояние до ближайшего якоря с порогом
if (nearestDist < 10)
{
m_activeAnchorID = nearestID;
}
else
{
m_activeAnchorID = AnchorID.None;
}
}
// Обновляем цвета якорей в зависимости от их состояния
foreach (KeyValuePair <AnchorID, Shape> record in m_anchors)
{
Color color;
if (record.Key == m_activeAnchorID)
{
// Активный якорь
color = IsMouseCaptured ? Colors.Blue : Colors.Red;
}
else
{
// Неактивный якорь
color = m_normalColor;
}
record.Value.Stroke = new SolidColorBrush(color);
}
}
