// Get a paint context for this window
public PaintContext GetPaintContext()
{
// Create buffer?
if (_buf == null)
{
_buf = new CharInfo[FrameRectangle.Width * FrameRectangle.Height];
}
var ctx = new PaintContext(_buf, FrameRectangle.Size, new Rect(1, 1, FrameRectangle.Width - 2, FrameRectangle.Height - 2));
ctx.Attributes = _clearAttributes;
_manager.Invalidate(this);
return(ctx);
}
// Called by manager to draw this window - including frame
public virtual CharInfo[] Draw()
{
// Create buffer?
if (_buf == null)
{
_buf = new CharInfo[FrameRectangle.Width * FrameRectangle.Height];
_needsFrameRender = true;
_needsClientRender = true;
}
// Create paint context for the frame
var px = new PaintContext(_buf, new Size(FrameRectangle.Width, FrameRectangle.Height), new Rect(0, 0, FrameRectangle.Width, FrameRectangle.Height));
// Paint frame?
if (_needsFrameRender || _frameRenderedActive != IsActive)
{
_frameRenderedActive = IsActive;
// Draw border
if (IsActive)
{
px.ForegroundColor = _manager.ActiveBorderLineColor;
px.BackgroundColor = _manager.ActiveBorderBackgroundColor;
}
else
{
px.ForegroundColor = _manager.InactiveBorderLineColor;
px.BackgroundColor = _manager.InactiveBorderBackgroundColor;
}
px.DrawBox(new Rect(0, 0, FrameRectangle.Width, FrameRectangle.Height), IsActive);
// Draw title
if (!string.IsNullOrEmpty(Title))
{
var title = " " + Title + " ";
int titleX = (FrameRectangle.Width - title.Length) / 2;
if (titleX < 2)
{
titleX = 2;
}
for (int i = 0; i < title.Length && i < FrameRectangle.Width - 4; i++)
{
_buf[titleX + i].Char = title[i];
}
}
}
// Paint client area
if (_needsClientRender)
{
var ctx = new PaintContext(_buf, FrameRectangle.Size, new Rect(1, 1, FrameRectangle.Width - 2, FrameRectangle.Height - 2));
ctx.Attributes = _clearAttributes;
ctx.Clear();
OnPaint(ctx);
}
_needsClientRender = false;
_needsFrameRender = false;
return(_buf);
}
// Override to paint the context of this window
public virtual void OnPaint(PaintContext ctx)
{
}