private void ProcessDocumentKey(NNodeKeyEventArgs args)
{
// the only key the document processes is the tab
if (args.KeyCode != Keys.Tab)
{
return;
}
NShape newFocusedShape = null;
NShape curFocusedShape = (document.FocusedElement as NShape);
// if there is no currently focused shape
if (curFocusedShape == null)
{
curFocusedShape = (document.ActiveLayer.GetChildAt(0) as NShape);
}
else
{
// get focused shape index
int index = document.ActiveLayer.IndexOfChild(curFocusedShape);
// increase or decrease depending on whether the shift was pressed
if (args.Shift)
{
index--;
}
else
{
index++;
}
// clamp to valid index
if (index < 0)
{
index = document.ActiveLayer.ChildrenCount(null) - 1;
}
else if (index >= document.ActiveLayer.ChildrenCount(null))
{
index = 0;
}
// get new focused node
newFocusedShape = (document.ActiveLayer.GetChildAt(index) as NShape);
}
// focus the new node
FocusShape(newFocusedShape);
// mark event as handled and processed
args.Handled = true;
args.Processed = markEventsAsProcessedCheck.Checked;
}
private void EventSinkService_NodeKeyUp(NNodeKeyEventArgs args)
{
// process document key
if (args.Node is NDrawingDocument)
{
ProcessDocumentKey(args);
document.SmartRefreshAllViews();
return;
}
// process shape key
if (args.Node is NShape)
{
ProcessShapeKey(args);
document.SmartRefreshAllViews();
return;
}
}
private void ProcessShapeKey(NNodeKeyEventArgs args)
{
if (args.KeyData != Keys.Left &&
args.KeyData != Keys.Right &&
args.KeyData != Keys.Up &&
args.KeyData != Keys.Down)
{
return;
}
NShape shape = (args.Node as NShape);
NRectangleF bounds = shape.Bounds;
switch (args.KeyData)
{
case Keys.Left:
bounds.Translate(-5, 0);
break;
case Keys.Right:
bounds.Translate(5, 0);
break;
case Keys.Up:
bounds.Translate(0, -5);
break;
case Keys.Down:
bounds.Translate(0, 5);
break;
}
shape.Bounds = bounds;
document.SmartRefreshAllViews();
// mark event as handled and processed
args.Handled = true;
args.Processed = markEventsAsProcessedCheck.Checked;
}