protected override void OnPreviewMouseMove(MouseEventArgs e)
{
base.OnPreviewMouseMove(e);
if (this.IsMouseCaptured)
{
if (this.isDragging)
{
Point currentPosition = e.GetPosition(this);
double originalLeft = Canvas.GetLeft(ResizeHandles.SelectedElement);
double originalTop = Canvas.GetTop(ResizeHandles.SelectedElement);
double elementWidth = ResizeHandles.SelectedElement.GetPropertyValue("ActualWidth").ToDouble();
double elementHeigth = ResizeHandles.SelectedElement.GetPropertyValue("ActualHeight").ToDouble();
double elementLeft = (currentPosition.X - this.startPoint.X) + this.selectedElementOrigins.X;
double elementTop = (currentPosition.Y - this.startPoint.Y) + this.selectedElementOrigins.Y;
double offsetLeft = elementLeft - originalLeft;
double offsetTop = elementTop - originalTop;
if (elementLeft < 0)
{
elementLeft = this.isHandle ? ResizeHandles.HandleSize * -1 : 0;
}
if (elementTop < 0)
{
elementTop = this.isHandle ? ResizeHandles.HandleSize * -1 : 0;
}
if (this.isHandle)
{
// This moves the handle block
ResizeHandles.MoveObject(base.ActualWidth, base.ActualHeight, elementLeft, elementWidth, elementTop, elementHeigth);
ResizeHandles.SelectedElement.ResizeElements(elementTop, elementLeft);
}
else
{
ResizeHandles.MoveObjects(base.ActualWidth, base.ActualHeight,
elementLeft, elementWidth, elementTop, elementHeigth,
offsetLeft, offsetTop);
}
}
}
}
public static void MoveObjects(double canvasWidth,
double canvasHeight,
double elementLeft,
double elementWidth,
double elementTop,
double elementHeigth,
double offsetLeft,
double offsetTop
)
{
ResizeHandles.MoveObject(canvasWidth, canvasHeight, elementLeft, elementWidth, elementTop, elementHeigth);
ResizeHandles.SelectedElement.MoveHandles();
Guid elementId = SelectedElement.GetElementId();
foreach (UIElement item in canvaselements.Values)
{
if (elementId == item.GetElementId())
{
continue;
}
SectionCanvas itemCanvas = item.FindParentControlBase(typeof(SectionCanvas)) as SectionCanvas;
double canvasItemWidth = ResizeHandles.SelectedElement.GetPropertyValue("ActualWidth").ToDouble();
double canvasItemHeigth = ResizeHandles.SelectedElement.GetPropertyValue("ActualHeight").ToDouble();
double canvasItemLeft = Canvas.GetLeft(item) + offsetLeft;
double canvasItemTop = Canvas.GetTop(item) + offsetTop;
if (canvasItemLeft <= 0 ||
canvasItemTop <= 0 ||
(canvasItemLeft + canvasItemWidth) > itemCanvas.ActualWidth ||
(canvasItemTop + canvasItemHeigth) > itemCanvas.ActualHeight)
{
continue;
}
Canvas.SetLeft(item, canvasItemLeft);
Canvas.SetTop(item, canvasItemTop);
item.MoveHandles();
}
}
