private void ScaleRect(RectFigure rf, Point pos)
{
if (_nowScaling == null)
{
_originalW = rf.Width.CachedValue.AsDouble;
_originalH = rf.Height.CachedValue.AsDouble;
var snappedTo = StepManager.SnapTo(pos, rf.GetMagnets(), rf.Center);
if ((snappedTo == rf.Left) && (Math.Abs(_originalW) > Utils.Tolerance))
{
_nowScaling = new ScaleRectStep(rf, ScaleRectStep.Side.Right,
1 - (pos.X - _downPos.X) / _originalW);
}
else if ((snappedTo == rf.Right) && (Math.Abs(_originalW) > Utils.Tolerance))
{
_nowScaling = new ScaleRectStep(rf, ScaleRectStep.Side.Left,
1 + (pos.X - _downPos.X) / _originalW);
}
else if ((snappedTo == rf.Top) && (Math.Abs(_originalH) > Utils.Tolerance))
{
_nowScaling = new ScaleRectStep(rf, ScaleRectStep.Side.Bottom,
1 - (pos.Y - _downPos.Y) / _originalH);
}
else if ((snappedTo == rf.Bottom) && (Math.Abs(_originalH) > Utils.Tolerance))
{
_nowScaling = new ScaleRectStep(rf, ScaleRectStep.Side.Top,
1 + (pos.Y - _downPos.Y) / _originalH);
}
if (_nowScaling == null)
{
return;
}
StepManager.InsertNext(_nowScaling);
}
else
{
var srs = (ScaleRectStep)_nowScaling;
if (srs.ScaleAround == ScaleRectStep.Side.Right)
{
srs.Scale(1 - (pos.X - _downPos.X) / _originalW);
}
else if (srs.ScaleAround == ScaleRectStep.Side.Left)
{
srs.Scale(1 + (pos.X - _downPos.X) / _originalW);
}
else if (srs.ScaleAround == ScaleRectStep.Side.Top)
{
srs.Scale(1 + (pos.Y - _downPos.Y) / _originalH);
}
else if (srs.ScaleAround == ScaleRectStep.Side.Bottom)
{
srs.Scale(1 - (pos.Y - _downPos.Y) / _originalH);
}
}
}
private void ResizeRect(RectFigure rf, Point pos)
{
if (_nowResizing == null)
{
var snappedTo = StepManager.SnapTo(pos, rf.GetMagnets(), rf.Center);
if (snappedTo == rf.Left)
{
_nowResizing = new ResizeRectStep(rf, ResizeRectStep.Side.Right, pos.X - _downPos.X);
}
else if (snappedTo == rf.Right)
{
_nowResizing = new ResizeRectStep(rf, ResizeRectStep.Side.Left, pos.X - _downPos.X);
}
else if (snappedTo == rf.Top)
{
_nowResizing = new ResizeRectStep(rf, ResizeRectStep.Side.Bottom, pos.Y - _downPos.Y);
}
else if (snappedTo == rf.Bottom)
{
_nowResizing = new ResizeRectStep(rf, ResizeRectStep.Side.Top, pos.Y - _downPos.Y);
}
if (_nowResizing == null)
{
return;
}
StepManager.InsertNext(_nowResizing);
}
else
{
var rrs = (ResizeRectStep)_nowResizing;
var snapped = StepManager.Snap(pos, _nowResizing.Figure);
if (snapped != null)
{
if (rrs.ResizeAround == ResizeRectStep.Side.Right)
{
rrs.Resize("(" + snapped.X.ExprString + ") - " + rrs.Figure.Name + ".x", snapped.Def);
}
else if (rrs.ResizeAround == ResizeRectStep.Side.Left)
{
rrs.Resize("(" + snapped.X.ExprString + ") - (" + rrs.Figure.Name + ".x + (" +
rrs.Figure.Name + ".width))", snapped.Def);
}
else if (rrs.ResizeAround == ResizeRectStep.Side.Top)
{
rrs.Resize("(" + snapped.Y.ExprString + ") - (" + rrs.Figure.Name + ".y + (" +
rrs.Figure.Name + ".height))", snapped.Def);
}
else if (rrs.ResizeAround == ResizeRectStep.Side.Bottom)
{
rrs.Resize("(" + snapped.Y.ExprString + ") - " + rrs.Figure.Name + ".y", snapped.Def);
}
}
else
{
if (rrs.ResizeAround == ResizeRectStep.Side.Right)
{
rrs.Resize(pos.X - _downPos.X);
}
else if (rrs.ResizeAround == ResizeRectStep.Side.Left)
{
rrs.Resize(pos.X - _downPos.X);
}
else if (rrs.ResizeAround == ResizeRectStep.Side.Top)
{
rrs.Resize(pos.Y - _downPos.Y);
}
else if (rrs.ResizeAround == ResizeRectStep.Side.Bottom)
{
rrs.Resize(pos.Y - _downPos.Y);
}
}
}
}