/// <summary>
/// Handles the right mouse button up event (dragging stopped).
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">Event arguments.</param>
private void mainGrid_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
if (this.IsViewOnly)
{
return;
}
// do not start in a new point unless last polygon is closed
if (rightBtnIsDragging || !lastPolygonClosed)
{
return;
}
this.rightBtnIsDragging = true;
this.lastPolygonClosed = false;
System.Windows.Point position = e.GetPosition(this);
double x = 0, y = 0;
FromMonitorToCoordinate(position.X, position.Y, ref x, ref y);
this.dragStartPoint = new CGUtilities.Point(x, y);
this.dragEndPoint = this.dragStartPoint;
this.UpdateSelectionLine();
}
/// <summary>
/// Handles the left mouse button up event (dragging stopped).
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">Event arguments.</param>
void mainGrid_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (this.IsViewOnly || dragStartPoint == null)
{
return;
}
if (!this.isDragging || rightBtnIsDragging)
{
return;
}
this.isDragging = false;
this.selectionGrid.Visibility = System.Windows.Visibility.Collapsed;
System.Windows.Point position = e.GetPosition(this);
double x = 0, y = 0;
FromMonitorToCoordinate(position.X, position.Y, ref x, ref y);
this.dragEndPoint = new CGUtilities.Point(x, y);
if (this.dragStartPoint.Equals(this.dragEndPoint))
{
this.Points.Add(this.dragStartPoint);
}
else
{
this.Lines.Add(new Line(this.dragStartPoint, this.dragEndPoint));
}
}
/// <summary>
/// Adds animation element for a point.
/// </summary>
/// <param name="point">The point.</param>
private void AddAnimationElement(CGUtilities.Point point)
{
var element = this.CreateElement(point);
this.AnimateAnimationElement(element, point);
this.AddAnimationElement(element);
}
/// <summary>
/// Handles the right mouse button up event (dragging stopped).
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">Event arguments.</param>
private void mainGrid_MouseRightButtonUp(object sender, MouseButtonEventArgs e)
{
if (this.IsViewOnly || dragStartPoint == null)
{
return;
}
double x = 0, y = 0;
System.Windows.Point position = e.GetPosition(this);
FromMonitorToCoordinate(position.X, position.Y, ref x, ref y);
var EndPoint = new CGUtilities.Point(x, y);
this.selectionGrid.Visibility = System.Windows.Visibility.Collapsed;
if (this.dragStartPoint.Equals(EndPoint))
{
return;
}
if (this.rightBtnIsDragging) // first line in a new polygon
{
this.rightBtnIsDragging = false;
if (!this.dragStartPoint.Equals(EndPoint))
{
var CurrentPolygon = new ObservableCollection <Line>();
CurrentPolygon.CollectionChanged += lines_CollectionChanged;
CurrentPolygon.Add(new Line(this.dragStartPoint, EndPoint));
polygonsUI.Add(CurrentPolygon);
}
}
else // new line in last polygon
{
if (polygonsUI.Count == 0)
{
return;
}
var CurrentPolygon = polygonsUI[polygonsUI.Count - 1];
var firstPoint = CurrentPolygon[CurrentPolygon.Count - 1].End.Clone();
if (!firstPoint.Equals(EndPoint))
{
CurrentPolygon.Add(new Line((CGUtilities.Point)firstPoint, EndPoint));
}
}
}
internal void Reset()
{
this.Points.Clear();
this.Lines.Clear();
this.polygons.Clear();
this.selectionLine.X1 = 0;
this.selectionLine.Y1 = 0;
this.selectionLine.X2 = 0;
this.selectionLine.Y2 = 0;
lastPolygonClosed = true;
rightBtnIsDragging = isDragging = false;
dragStartPoint = dragEndPoint = null;
}
/// <summary>
/// Creates a UI element that represents a point.
/// </summary>
/// <param name="point">The point.</param>
/// <returns>Point UI element.</returns>
private FrameworkElement CreateElement(CGUtilities.Point point)
{
double x = point.X, y = point.Y;
FromCoordinateToMonitor(point.X, point.Y, ref x, ref y);
var element = new System.Windows.Shapes.Ellipse()
{
Width = pointRadius,
Height = pointRadius,
Margin = new Thickness(x - pointRadius / 2, y - pointRadius / 2, 0, 0),
};
this.SetElementAlignment(element);
return(element);
}
/// <summary>
/// Handles the mouse move event (dragging).
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">Event arguments.</param>
void mainGrid_MouseMove(object sender, MouseEventArgs e)
{
if (this.IsViewOnly)
{
return;
}
if (this.isDragging || this.rightBtnIsDragging)
{
this.selectionGrid.Visibility = System.Windows.Visibility.Visible;
System.Windows.Point position = e.GetPosition(this);
double x = 0, y = 0;
FromMonitorToCoordinate(position.X, position.Y, ref x, ref y);
this.dragEndPoint = new CGUtilities.Point(x, y);
this.UpdateSelectionLine();
}
}
/// <summary>
/// Sets the animation for the animated point element.
/// </summary>
/// <param name="element">The point element.</param>
/// <param name="point">The point.</param>
private void AnimateAnimationElement(FrameworkElement element, CGUtilities.Point point)
{
ScaleTransform scaleTransform = new ScaleTransform(1, 1);
element.RenderTransform = scaleTransform;
element.RenderTransformOrigin = new System.Windows.Point(0.5, 0.5);
DoubleAnimation fadeIn = new DoubleAnimation(0, TimeSpan.FromMilliseconds(animationDuration))
{
DecelerationRatio = 1,
};
DoubleAnimation scaleAnimation = new DoubleAnimation(scaleAnimationScale, TimeSpan.FromMilliseconds(animationDuration))
{
AccelerationRatio = 1,
};
element.BeginAnimation(FrameworkElement.OpacityProperty, fadeIn);
scaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty, scaleAnimation);
scaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty, scaleAnimation);
}
/// <summary>
/// Handles the left mouse button down event (dragging started).
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">Event arguments.</param>
void mainGrid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (this.IsViewOnly)
{
return;
}
if (isDragging || rightBtnIsDragging)
{
return;
}
this.isDragging = true;
System.Windows.Point position = e.GetPosition(this);
double x = 0, y = 0;
FromMonitorToCoordinate(position.X, position.Y, ref x, ref y);
this.dragStartPoint = new CGUtilities.Point(x, y);
this.dragEndPoint = this.dragStartPoint;
this.UpdateSelectionLine();
}