public Size SizeFromSize(Size requested)
{
if (IsFlow)
{
SizeF szData = ClientToData(requested);
if (!m_Document.PaletteDesignSize.IsEmpty)
{
// scaling is only permitted if we have a definite original size
float zoom = (float)(Math.Sqrt(requested.ToSizeF().Area() / m_Document.PaletteDesignSize.Area()) / m_PixelsPerDocumentX);
szData = szData.MultiplyBy(m_Document.PaletteDesignSize.Area() / szData.Area()); // Has the new aspect ratio, but the same total area as the design size
// not sure why we want to reset to original size (which appears to be small!)
szData = ((IAutoSize)m_Page.Shapes.First()).AutoSize(szData);
m_SpecialZoom = 0;
if (m_Zoom != zoom)
{
m_Palette.InvalidatePreview();
}
m_Zoom = zoom;
// Note that this must not use the base class methods such as ChangeZoom, because they will try and scroll the "page"
}
else
{
szData = ((IAutoSize)m_Page.Shapes.First()).AutoSize(szData);
}
m_Page.SetSize(szData, 0);
return(DataToClient(szData).ToSize());
}
return(m_Page.Size.ChangeLength(requested.Length()).ToSize()); // same shape as page, but diagonal length of request
}