/// <summary>
/// Renders the layout to an image
/// </summary>
/// <param name="Settings">Rendering settings.</param>
/// <param name="Maps">Generated maps</param>
/// <returns></returns>
public SKImage Render(RenderSettings Settings, out Map[] Maps)
{
Maps = null; // TODO: Generate maps.
int Width;
int Height;
switch (Settings.ImageSize)
{
case RenderedImageSize.ResizeImage:
Width = Height = 10;
break;
case RenderedImageSize.ScaleToFit:
default:
Width = Settings.Width;
Height = Settings.Height;
break;
}
SKSurface Surface = SKSurface.Create(new SKImageInfo(Width, Height, SKImageInfo.PlatformColorType, SKAlphaType.Premul));
DrawingState State = null;
try
{
SKCanvas Canvas = Surface.Canvas;
State = new DrawingState(Canvas, Settings, this.session);
if (Settings.BackgroundColor != SKColor.Empty)
{
Canvas.Clear(Settings.BackgroundColor);
}
int Limit = 100;
while (this.root?.MeasureDimensions(State) ?? false)
{
if (--Limit <= 0)
{
break;
}
}
this.root?.MeasurePositions(State);
switch (Settings.ImageSize)
{
case RenderedImageSize.ResizeImage:
Surface.Dispose();
Surface = null;
if (!(this.root is null))
{
Width = (int)this.root.Right - (int)this.root.Left + 1;
Height = (int)this.root.Bottom - (int)this.root.Top - 1;
}
Surface = SKSurface.Create(new SKImageInfo(Width, Height, SKImageInfo.PlatformColorType, SKAlphaType.Premul));
Canvas = Surface.Canvas;
State.Canvas = Canvas;
if (Settings.BackgroundColor != SKColor.Empty)
{
Canvas.Clear(Settings.BackgroundColor);
}
if (!(this.root is null) && this.root.Left.HasValue && this.root.Top.HasValue)
{
State.Canvas.Translate(-this.root.Left.Value, -this.root.Top.Value);
}
break;
case RenderedImageSize.ScaleToFit:
if (!(this.root is null))
{
if (this.root.Width.HasValue && this.root.Height.HasValue)
{
float Width2 = this.root.Width.Value + 1;
float Height2 = this.root.Height.Value + 1;
float ScaleX = Width / Width2;
float ScaleY = Height / Height2;
if (ScaleX < ScaleY)
{
State.Canvas.Translate(0, (Height - Height2 * ScaleX) / 2);
State.Canvas.Scale(ScaleX);
}
else if (ScaleY < ScaleX)
{
State.Canvas.Translate((Width - Width2 * ScaleY) / 2, 0);
State.Canvas.Scale(ScaleY);
}
}
if (this.root.Left.HasValue && this.root.Top.HasValue)
{
State.Canvas.Translate(-this.root.Left.Value, -this.root.Top.Value);
}
}
break;
}
this.root?.Draw(State);
return(Surface.Snapshot());
}
finally
{
State?.Dispose();
Surface?.Dispose();
}
}
