/// <summary>
/// 对inkcanvas进行缩放并旋转
/// </summary>
/// <param name="inkcanvas">缩放对象</param>
/// <param name="rate">缩放比率</param>
public static void InkCanvasZoomRotate(InkCanvas inkCanvas, double duration, double fromZoomRate, double toZoomRate, double centerX, double centerY)
{
TransformGroup transformGroup = new TransformGroup();
ScaleTransform scaleTransform = new ScaleTransform();
transformGroup.Children.Add(scaleTransform);
//inkCanvas.RenderTransform = scaleTransform;
scaleTransform.CenterX = inkCanvas.ActualWidth * centerX;
scaleTransform.CenterY = inkCanvas.ActualHeight * centerY;
DoubleAnimation myDoubleAnimation = new DoubleAnimation();
//宽度缩放
myDoubleAnimation.From = fromZoomRate;
myDoubleAnimation.To = toZoomRate;
myDoubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(duration));
if (inkCanvas.FindName("scaleTransform") != null)
{
inkCanvas.UnregisterName("scaleTransform");
}
inkCanvas.RegisterName("scaleTransform", scaleTransform);
Storyboard.SetTargetName(myDoubleAnimation, "scaleTransform");
Storyboard.SetTargetProperty(myDoubleAnimation, new PropertyPath(ScaleTransform.ScaleXProperty));
DoubleAnimation myDoubleAnimationHeight = new DoubleAnimation();
//高度缩放
myDoubleAnimationHeight.From = fromZoomRate;
myDoubleAnimationHeight.To = toZoomRate;
myDoubleAnimationHeight.Duration = myDoubleAnimation.Duration;
Storyboard.SetTargetName(myDoubleAnimationHeight, "scaleTransform");
Storyboard.SetTargetProperty(myDoubleAnimationHeight, new PropertyPath(ScaleTransform.ScaleYProperty));
RotateTransform rotateTransform = new RotateTransform();
transformGroup.Children.Add(rotateTransform);
inkCanvas.RenderTransform = transformGroup;
rotateTransform.CenterX = scaleTransform.CenterX;
rotateTransform.CenterY = scaleTransform.CenterY;
DoubleAnimation rotateDoubleAnimation = new DoubleAnimation();
rotateDoubleAnimation.From = 0;
rotateDoubleAnimation.To = 720;
rotateDoubleAnimation.Duration = myDoubleAnimation.Duration;
if (inkCanvas.FindName("rotateTransform") != null)
{
inkCanvas.UnregisterName("rotateTransform");
}
inkCanvas.RegisterName("rotateTransform", rotateTransform);
Storyboard.SetTargetName(rotateDoubleAnimation, "rotateTransform");
Storyboard.SetTargetProperty(rotateDoubleAnimation, new PropertyPath(RotateTransform.AngleProperty));
Storyboard myStoryboard = new Storyboard();
myStoryboard.Children.Add(myDoubleAnimation);
myStoryboard.Children.Add(myDoubleAnimationHeight);
myStoryboard.Children.Add(rotateDoubleAnimation);
myStoryboard.Begin(inkCanvas);
}
/// <summary>
/// 对inkcanvas进行缩放
/// </summary>
/// <param name="inkcanvas">缩放对象</param>
/// <param name="rate">缩放比率</param>
public void InkCanvasZoom(InkCanvas inkCanvas, double fromRate, double toRate, double centerX, double centerY)
{
//((ScaleTransform)inkCanvas.RenderTransform).CenterX = centerX;
//((ScaleTransform)inkCanvas.RenderTransform).CenterY = centerY;
ScaleTransform scaleTransform = new ScaleTransform();
inkCanvas.RenderTransform = scaleTransform;
scaleTransform.CenterX = inkCanvas.ActualWidth * centerX;
scaleTransform.CenterY = inkCanvas.ActualHeight * centerY;
DoubleAnimation myDoubleAnimation = new DoubleAnimation();
//宽度缩放
myDoubleAnimation.From = fromRate;
myDoubleAnimation.To = toRate;
myDoubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(0.5));
if (inkCanvas.FindName("scaleTransform") != null)
{
inkCanvas.UnregisterName("scaleTransform");
}
inkCanvas.RegisterName("scaleTransform", scaleTransform);
Storyboard.SetTargetName(myDoubleAnimation, "scaleTransform");
Storyboard.SetTargetProperty(myDoubleAnimation, new PropertyPath(ScaleTransform.ScaleXProperty));
DoubleAnimation myDoubleAnimationHeight = new DoubleAnimation();
//高度缩放
myDoubleAnimationHeight.From = fromRate;
myDoubleAnimationHeight.To = toRate;
myDoubleAnimationHeight.Duration = new Duration(TimeSpan.FromSeconds(0.5));
Storyboard.SetTargetName(myDoubleAnimationHeight, "scaleTransform");
Storyboard.SetTargetProperty(myDoubleAnimationHeight, new PropertyPath(ScaleTransform.ScaleYProperty));
Storyboard myStoryboard = new Storyboard();
myStoryboard.Children.Add(myDoubleAnimation);
myStoryboard.Children.Add(myDoubleAnimationHeight);
myStoryboard.Begin(inkCanvas);
}
