public void TestClick()
{
ParaBox para;
RootBox root = ParaBuilderTests.MakeTestParaSimpleString(m_gm.VwGraphics, ParaBuilderTests.MockBreakOption.ThreeFullLines, out para);
PaintTransform ptrans = new PaintTransform(2, 4, 96, 100, 0, 0, 120, 128);
var seg = FirstMockSegment(root);
seg.OnPointToCharReturn(4, false);
var sel = root.GetSelectionAt(new Point(5, 10), m_gm.VwGraphics, ptrans);
Assert.That(sel.IsInsertionPoint);
Assert.That(((InsertionPoint)sel).StringPosition, Is.EqualTo(4));
Assert.That(((InsertionPoint)sel).AssociatePrevious, Is.False);
Assert.That(seg.PointToCharVg, Is.EqualTo(m_gm.VwGraphics));
Assert.That(seg.PointToCharIchBase, Is.EqualTo(0));
// not much of a test, but we don't have any way to offset paras yet
Assert.That(seg.PointToCharRcDst, Is.EqualTo(ptrans.DestRect));
Assert.That(seg.PointToCharRcSrc, Is.EqualTo(ptrans.SourceRect));
// Should be offset by the Paint transform origin.
Assert.That(seg.PointToCharClickPosition, Is.EqualTo(new Point(5, 10)));
seg = SecondMockSegment(root);
seg.OnPointToCharReturn(14, true);
sel = root.GetSelectionAt(new Point(7, 20), m_gm.VwGraphics, ptrans);
Assert.That(sel.IsInsertionPoint);
Assert.That(((InsertionPoint)sel).StringPosition, Is.EqualTo(14));
Assert.That(((InsertionPoint)sel).AssociatePrevious, Is.True);
Assert.That(seg.PointToCharVg, Is.EqualTo(m_gm.VwGraphics));
Assert.That(seg.PointToCharIchBase, Is.EqualTo(IchMinOfSecondStringBox(root)));
// Should be offset by the Paint transform origin and the origin of the second box.
var topLeft = TopLeftOfSecondStringBox(root);
Assert.That(seg.PointToCharClickPosition, Is.EqualTo(new Point(7, 20)));
}