internal Font(object backend, Toolkit toolkit)
{
if (toolkit != null)
{
ToolkitEngine = toolkit;
}
handler = ToolkitEngine.FontBackendHandler;
if (backend == null)
{
throw new ArgumentNullException("backend");
}
Backend = backend;
}
internal void InitForToolkit(Toolkit tk)
{
if (ToolkitEngine != tk)
{
// Gather existing font property before switching handler
var fname = Family;
var size = Size;
var style = Style;
var weight = Weight;
var stretch = Stretch;
ToolkitEngine = tk;
handler = tk.FontBackendHandler;
var fb = handler.Create(fname, size, style, weight, stretch);
Backend = fb ?? handler.GetSystemDefaultFont();
}
}
internal void InitForToolkit(Toolkit tk)
{
if (ToolkitEngine != tk)
{
// Gather existing font property before switching handler
var fname = Family;
var size = Size;
var style = Style;
var weight = Weight;
var stretch = Stretch;
var oldHandler = ToolkitEngine.FontBackendHandler;
ToolkitEngine = tk;
handler = tk.FontBackendHandler;
if (fname == oldHandler.SystemFont.Family)
{
Backend = handler.WithSettings(handler.SystemFont.Backend, size, style, weight, stretch);
}
else if (fname == oldHandler.SystemMonospaceFont.Family)
{
Backend = handler.WithSettings(handler.SystemMonospaceFont.Backend, size, style, weight, stretch);
}
else if (fname == oldHandler.SystemSansSerifFont.Family)
{
Backend = handler.WithSettings(handler.SystemSansSerifFont.Backend, size, style, weight, stretch);
}
else if (fname == oldHandler.SystemSerifFont.Family)
{
Backend = handler.WithSettings(handler.SystemSerifFont.Backend, size, style, weight, stretch);
}
else
{
var fb = handler.Create(fname, size, style, weight, stretch);
Backend = fb ?? handler.WithSettings(handler.GetSystemDefaultFont(), size, style, weight, stretch);
}
}
}