public TextServiceDirectWrite()
{
try
{
interop = new TextServiceDirectWriteInterop();
}
catch (Exception exception)
{
// dll load issue
Debugger.Break();
MessageBox.Show("Failed to load DirectWrite interop dll: " + exception.ToString());
}
#if true
uniscribeService = new TextServiceUniscribe();
#else // TODO: support Windows.Data.Text for universal script segmentation support
#endif
}
private static TextServiceDirectWriteInterop EnsureInterop(Font font)
{
if (interops == null)
{
interops = new List<KeyValuePair<Font, TextServiceDirectWriteInterop>>(MaxCachedInterops);
}
if (lastWidth != Screen.PrimaryScreen.Bounds.Width)
{
ClearCache();
}
lastWidth = Screen.PrimaryScreen.Bounds.Width;
int index = -1;
for (int i = 0; i < interops.Count; i++)
{
if (font.Equals(interops[i].Key))
{
index = i;
}
}
if (index < 0)
{
if (interops.Count >= MaxCachedInterops)
{
ClearCache();
}
index = interops.Count;
TextServiceDirectWriteInterop interop = new TextServiceDirectWriteInterop();
interop.Reset(TextServiceDirectWrite.InteropGlobals, font, lastWidth);
interops.Add(new KeyValuePair<Font, TextServiceDirectWriteInterop>(font, interop));
#if DEBUG
Debugger.Log(
1,
"TextServiceDirectWrite",
String.Concat(
DateTime.Now.ToString(),
": Added DirectWrite interop for ",
font.ToString(),
" ",
font.Style.ToString(),
Environment.NewLine));
#endif
}
return interops[index].Value;
}
