private void InputElement_PreviewMouseMove(object sender, MouseEventArgs e)
{
if (e.Handled)
{
return;
}
if (!IsManipulating && ManageCursor)
{
if (e.OriginalSource is UIElement sourceElement)
{
var testArgs = HandleElementTest(sourceElement);
if (!testArgs.CanMove && !testArgs.CanResize)
{
SetCursorIfNeed(sourceElement, MoveUtility.GetCursor(RectManipulations.None));
return;
}
var inputRect = new Rect(sourceElement.RenderSize);
var inputPoint = e.GetPosition(sourceElement);
var manipulations = MoveUtility.GetRectManipulations(inputRect, inputPoint, testArgs.ResizeBorderPadding, testArgs.CanMove, testArgs.CanResize);
SetCursorIfNeed(sourceElement, MoveUtility.GetCursor(manipulations));
}
}
else if (IsManipulating && e.LeftButton == MouseButtonState.Pressed)
{
var mousePos = MouseInfo.GetCursorPosition();
MoveUtility.GetManipulationsVectors(CurrentInfo.Manipulations, mousePos, CurrentInfo.PrevMousePos, out var positionVector, out var sizeVector);
CurrentInfo.PrevMousePos = mousePos;
if (positionVector.Length != 0 || sizeVector.Length != 0)
{
if (!HandlePerformManipulation(CurrentInfo.SourceElement, CurrentInfo.Manipulations, sizeVector, positionVector))
{
ReleaseCurrentManipulation();
}
}
e.Handled = true;
}
}
private void InputElement_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (e.Handled)
{
return;
}
if (!IsManipulating && e.LeftButton == MouseButtonState.Pressed)
{
if (e.OriginalSource is UIElement sourceElement)
{
var testArgs = HandleElementTest(sourceElement);
if (!testArgs.CanMove && !testArgs.CanResize)
{
return;
}
var inputRect = new Rect(sourceElement.RenderSize);
var inputPoint = e.GetPosition(sourceElement);
var manipulations = MoveUtility.GetRectManipulations(inputRect, inputPoint, testArgs.ResizeBorderPadding, testArgs.CanMove, testArgs.CanResize);
if (manipulations != RectManipulations.None)
{
if (!HandleBeginManipulation(sourceElement, manipulations))
{
return;
}
if (!sourceElement.CaptureMouse())
{
HandleReleaseManipulation(sourceElement, manipulations);
return;
}
CurrentInfo = new MoverManipulationInfo(sourceElement, manipulations, MouseInfo.GetCursorPosition());
SetCursorIfNeed(sourceElement, MoveUtility.GetCursor(manipulations));
e.Handled = true;
}
}
}
}