protected override void OnRender(System.Windows.Media.DrawingContext drawingContext)
{
RotarySwitch rotarySwitch = Visual as RotarySwitch;
if (rotarySwitch != null)
{
if (rotarySwitch.DrawLines)
{
drawingContext.DrawDrawing(_lines);
}
foreach (SwitchPositionLabel label in _labels)
{
drawingContext.DrawText(label.Text, label.Location);
}
drawingContext.PushTransform(new RotateTransform(rotarySwitch.KnobRotation, _center.X, _center.Y));
drawingContext.DrawRectangle(_imageBrush, null, _imageRect);
if (rotarySwitch.VisualizeDragging)
{
double length = (rotarySwitch.DragPoint - _center).Length;
drawingContext.DrawLine(HeadingPen, _center, _center + new Vector(0d, -length));
}
drawingContext.Pop();
if (rotarySwitch.VisualizeDragging)
{
drawingContext.DrawLine(DragPen, _center, rotarySwitch.DragPoint);
}
}
}
private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
RotarySwitch rotary = Control as RotarySwitch;
if (rotary != null)
{
rotary.DefaultPosition = DefaultPositionCombo.SelectedIndex + 1;
}
}
private void SelectionChanged(object sender, SelectionChangedEventArgs e)
{
RotarySwitch rotary = Control as RotarySwitch;
if (rotary != null)
{
rotary.CurrentPosition = PositionList.SelectedIndex + 1;
}
}
private void Add_Position_Click(object sender, RoutedEventArgs e)
{
RotarySwitch rotary = Control as RotarySwitch;
if (rotary != null)
{
RotarySwitchPosition position = new RotarySwitchPosition(rotary, rotary.Positions.Count + 1, rotary.Positions.Count.ToString(CultureInfo.InvariantCulture), 0d);
rotary.Positions.Add(position);
ConfigManager.UndoManager.AddUndoItem(new RotarySwitchAddPositionUndoEvent(rotary, position));
}
}
private void Position_GotFocus(object sender, RoutedEventArgs e)
{
RotarySwitch rotary = Control as RotarySwitch;
FrameworkElement senderControl = sender as FrameworkElement;
if (senderControl != null && rotary != null)
{
int index = rotary.Positions.IndexOf((RotarySwitchPosition)senderControl.Tag);
rotary.CurrentPosition = index + 1;
}
}
private void DeletePosition_Executed(object sender, ExecutedRoutedEventArgs e)
{
RotarySwitch rotary = Control as RotarySwitch;
if (rotary != null && rotary.Positions.Contains((RotarySwitchPosition)PositionList.SelectedItem))
{
RotarySwitchPosition removedPosition = (RotarySwitchPosition)PositionList.SelectedItem;
int index = rotary.Positions.IndexOf(removedPosition);
rotary.Positions.Remove(removedPosition);
ConfigManager.UndoManager.AddUndoItem(new RotarySwitchDeletePositionUndoEvent(rotary, removedPosition, index));
}
}
protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
{
if (e.Property == ControlProperty)
{
RotarySwitch rotary = Control as RotarySwitch;
if (rotary != null && rotary.DefaultPosition > 0)
{
DefaultPositionCombo.SelectedIndex = rotary.DefaultPosition - 1;
}
}
base.OnPropertyChanged(e);
}
private void DeletePosition_CanExecute(object sender, CanExecuteRoutedEventArgs e)
{
RotarySwitch rotary = Control as RotarySwitch;
if (rotary != null)
{
e.CanExecute = (rotary.Positions.Count > 2);
}
else
{
e.CanExecute = false;
}
}
private void Delete_Position_Click(object sender, RoutedEventArgs e)
{
RotarySwitch rotary = Control as RotarySwitch;
FrameworkElement senderControl = sender as FrameworkElement;
if (senderControl != null && rotary != null)
{
RotarySwitchPosition position = senderControl.Tag as RotarySwitchPosition;
if (position != null && rotary.Positions.Contains(position))
{
rotary.Positions.Remove(position);
}
}
}
protected override void OnRender(System.Windows.Media.DrawingContext drawingContext)
{
RotarySwitch rotarySwitch = Visual as RotarySwitch;
if (rotarySwitch != null)
{
if (rotarySwitch.DrawLines)
{
drawingContext.DrawDrawing(_lines);
}
foreach (SwitchPositionLabel label in _labels)
{
drawingContext.DrawText(label.Text, label.Location);
}
_imageBrush.RelativeTransform = new RotateTransform(rotarySwitch.KnobRotation, 0.5d, 0.5d);
drawingContext.DrawRectangle(_imageBrush, null, _imageRect);
}
}
protected override void OnRefresh()
{
RotarySwitch rotarySwitch = Visual as RotarySwitch;
if (rotarySwitch != null)
{
_imageRect.Width = rotarySwitch.Width;
_imageRect.Height = rotarySwitch.Height;
_image = ConfigManager.ImageManager.LoadImage(rotarySwitch.KnobImage);
_imageBrush = new ImageBrush(_image);
_center = new Point(rotarySwitch.Width / 2d, rotarySwitch.Height / 2d);
_lines = new GeometryDrawing();
_lines.Pen = new Pen(new SolidColorBrush(rotarySwitch.LineColor), rotarySwitch.LineThickness);
_labels.Clear();
Vector v1 = new Point(_center.X, 0) - _center;
double lineLength = v1.Length * rotarySwitch.LineLength;
double labelDistance = v1.Length * rotarySwitch.LabelDistance;
v1.Normalize();
GeometryGroup lineGroup = new GeometryGroup();
Brush labelBrush = new SolidColorBrush(rotarySwitch.LabelColor);
foreach (RotarySwitchPosition position in rotarySwitch.Positions)
{
Matrix m1 = new Matrix();
m1.Rotate(position.Rotation);
if (rotarySwitch.DrawLines)
{
Vector v2 = v1 * m1;
Point startPoint = _center;
Point endPoint = startPoint + (v2 * lineLength);
lineGroup.Children.Add(new LineGeometry(startPoint, endPoint));
}
if (rotarySwitch.DrawLabels)
{
FormattedText labelText = rotarySwitch.LabelFormat.GetFormattedText(labelBrush, position.Name);
labelText.TextAlignment = TextAlignment.Center;
labelText.MaxTextWidth = rotarySwitch.Width;
labelText.MaxTextHeight = rotarySwitch.Height;
if (rotarySwitch.MaxLabelHeight > 0d && rotarySwitch.MaxLabelHeight < rotarySwitch.Height)
{
labelText.MaxTextHeight = rotarySwitch.MaxLabelHeight;
}
if (rotarySwitch.MaxLabelWidth > 0d && rotarySwitch.MaxLabelWidth < rotarySwitch.Width)
{
labelText.MaxTextWidth = rotarySwitch.MaxLabelWidth;
}
Point location = _center + (v1 * m1 * labelDistance);
if (position.Rotation <= 10d || position.Rotation >= 350d)
{
location.X -= labelText.MaxTextWidth / 2d;
location.Y -= labelText.Height;
}
else if (position.Rotation < 170d)
{
location.X -= (labelText.MaxTextWidth - labelText.Width) / 2d;
location.Y -= labelText.Height / 2d;
}
else if (position.Rotation <= 190d)
{
location.X -= labelText.MaxTextWidth / 2d;
}
else
{
location.X -= (labelText.MaxTextWidth + labelText.Width) / 2d;
location.Y -= labelText.Height / 2d;
}
_labels.Add(new SwitchPositionLabel(labelText, location));
}
}
_lines.Geometry = lineGroup;
_lines.Freeze();
}
else
{
_image = null;
_imageBrush = null;
_lines = null;
_labels.Clear();
}
}
