private static List <DisplayCommand> BuildDisplayList(Layout.LayoutBox layoutRoot)
{
var list = new List <DisplayCommand>();
RenderLayoutBox(list, layoutRoot);
return(list);
}
private static void RenderLayoutBox(List <DisplayCommand> list, Layout.LayoutBox layoutBox)
{
RenderBackground(list, layoutBox);
RenderBorders(list, layoutBox);
foreach (var child in layoutBox.Children)
{
RenderLayoutBox(list, child);
}
}
private static Css.Color GetColor(Layout.LayoutBox layoutBox, string name)
{
if (layoutBox.BoxType is Layout.AnonymousBlock)
{
return(null);
}
var color = layoutBox.BoxType.StyledNode.GetValue(name) as Css.ColorValue;
return(color?.Value);
}
public static Canvas Paint(Layout.LayoutBox layoutRoot, Layout.Rect bounds)
{
var displayList = BuildDisplayList(layoutRoot);
var canvas = new Canvas((int)bounds.Width, (int)bounds.Height);
foreach (var item in displayList)
{
canvas.PaintItem(item);
}
return(canvas);
}
private static void RenderBorders(List <DisplayCommand> list, Layout.LayoutBox layoutBox)
{
var color = GetColor(layoutBox, "border-color");
if (color == null)
{
return;
}
var borderBox = layoutBox.Dimensions.BorderBox();
var rect = new Layout.Rect()
{
X = borderBox.X
, Y = borderBox.Y
, Width = layoutBox.Dimensions.Border.Left
, Height = borderBox.Height
};
list.Add(new SolidColor(color, rect));
rect = new Layout.Rect()
{
X = borderBox.X + borderBox.Width - layoutBox.Dimensions.Border.Right
, Y = borderBox.Y
, Width = layoutBox.Dimensions.Border.Right
, Height = borderBox.Height
};
list.Add(new SolidColor(color, rect));
rect = new Layout.Rect()
{
X = borderBox.X
, Y = borderBox.Y
, Width = borderBox.Width
, Height = layoutBox.Dimensions.Border.Top
};
list.Add(new SolidColor(color, rect));
rect = new Layout.Rect()
{
X = borderBox.X
, Y = borderBox.Y + borderBox.Height - layoutBox.Dimensions.Border.Bottom
, Width = borderBox.Width
, Height = layoutBox.Dimensions.Border.Bottom
};
list.Add(new SolidColor(color, rect));
}
private static void RenderBackground(List <DisplayCommand> list, Layout.LayoutBox layoutBox)
{
var color = GetColor(layoutBox, "background");
list.Add(new SolidColor(color, layoutBox.Dimensions.BorderBox()));
}