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Vitaliy
2017-01-09 13:25:52 +03:00
parent a9f4f0f297
commit 6ead62af6e
98 changed files with 12058 additions and 72 deletions
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BrightSharp/Diagrams/Thumbs/RotateThumb.cs Normal file
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using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;
namespace Diagrams
{
public class RotateThumb : Thumb
{
private double initialAngle;
private RotateTransform rotateTransform;
private Vector startVector;
private Point centerPoint;
private ContentControl designerItem;
private Canvas canvas;
public RotateThumb()
{
DragDelta += new DragDeltaEventHandler(this.RotateThumb_DragDelta);
DragStarted += new DragStartedEventHandler(this.RotateThumb_DragStarted);
MouseRightButtonDown += RotateThumb_MouseLeftButtonDown;
}
private void RotateThumb_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (e.RightButton == MouseButtonState.Pressed)
{
this.rotateTransform = this.designerItem.RenderTransform as RotateTransform;
if (this.rotateTransform != null)
{
this.rotateTransform.Angle = 0;
this.designerItem.InvalidateMeasure();
}
}
}
private void RotateThumb_DragStarted(object sender, DragStartedEventArgs e)
{
this.designerItem = DataContext as ContentControl;
if (this.designerItem != null)
{
this.canvas = VisualTreeHelper.GetParent(this.designerItem) as Canvas;
if (this.canvas != null)
{
this.centerPoint = this.designerItem.TranslatePoint(
new Point(this.designerItem.ActualWidth * this.designerItem.RenderTransformOrigin.X,
this.designerItem.ActualHeight * this.designerItem.RenderTransformOrigin.Y),
this.canvas);
Point startPoint = Mouse.GetPosition(this.canvas);
this.startVector = Point.Subtract(startPoint, this.centerPoint);
this.rotateTransform = this.designerItem.RenderTransform as RotateTransform;
if (this.rotateTransform == null)
{
this.designerItem.RenderTransform = new RotateTransform(0);
this.initialAngle = 0;
}
else
{
this.initialAngle = this.rotateTransform.Angle;
}
}
}
}
private void RotateThumb_DragDelta(object sender, DragDeltaEventArgs e)
{
if (this.designerItem != null && this.canvas != null)
{
Point currentPoint = Mouse.GetPosition(this.canvas);
Vector deltaVector = Point.Subtract(currentPoint, this.centerPoint);
double angle = Vector.AngleBetween(this.startVector, deltaVector);
RotateTransform rotateTransform = this.designerItem.RenderTransform as RotateTransform;
rotateTransform.Angle = this.initialAngle + Math.Round(angle, 0);
this.designerItem.InvalidateMeasure();
}
}
}
}