public TextLayout(Canvas canvas)
{
ToolkitEngine = canvas.Surface.ToolkitEngine;
handler = ToolkitEngine.TextLayoutBackendHandler;
Backend = handler.Create ((ICanvasBackend)Toolkit.GetBackend (canvas));
Font = canvas.Font;
}
public TextLayout()
{
handler = ToolkitEngine.TextLayoutBackendHandler;
Backend = handler.Create ();
Font = Font.SystemFont;
Setup ();
}
internal TextLayout(Toolkit tk)
{
ToolkitEngine = tk;
handler = ToolkitEngine.TextLayoutBackendHandler;
Backend = handler.Create ();
Setup ();
}
public TextLayout(Canvas canvas)
{
ToolkitEngine = canvas.Surface.ToolkitEngine;
handler = ToolkitEngine.TextLayoutBackendHandler;
Backend = handler.Create ();
Font = canvas.Font;
Setup ();
}
public TextLayout(Context ctx)
{
ToolkitEngine = ctx.ToolkitEngine;
handler = ToolkitEngine.TextLayoutBackendHandler;
Backend = handler.Create (ctx);
}
internal void InitForToolkit(Toolkit tk)
{
if (ToolkitEngine == null || ToolkitEngine != tk) {
// If this is a re-initialization we dispose the previous state
if (handler != null) {
Dispose ();
GC.ReRegisterForFinalize (this);
}
ToolkitEngine = tk;
handler = ToolkitEngine.TextLayoutBackendHandler;
Backend = handler.Create ();
Setup ();
font = (Font)tk.ValidateObject (font);
if (font != null)
handler.SetFont (Backend, font);
if (text != null)
handler.SetText (Backend, text);
if (width != -1)
handler.SetWidth (Backend, width);
if (height != -1)
handler.SetHeight (Backend, height);
if (attributes != null && attributes.Count > 0)
foreach (var attr in attributes)
handler.AddAttribute (Backend, attr);
}
}