public override void Layout(IGuiContext context, RectangleF rectangle)
{
var x = 0f;
var y = 0f;
var availableSize = rectangle.Size;
foreach (var control in Controls)
{
var desiredSize = GuiLayoutHelper.GetSizeWithMargins(control, context, availableSize);
switch (Orientation)
{
case GuiOrientation.Vertical:
PlaceControl(context, control, x, y, Width, desiredSize.Height);
y += desiredSize.Height;
availableSize.Height -= desiredSize.Height;
break;
case GuiOrientation.Horizontal:
PlaceControl(context, control, x, y, desiredSize.Width, Height);
x += desiredSize.Width;
availableSize.Height -= desiredSize.Height;
break;
default:
throw new InvalidOperationException($"Unexpected orientation {Orientation}");
}
}
}
protected override Size2 CalculateDesiredSize(IGuiContext context, Size2 availableSize)
{
var width = 0f;
var height = 0f;
foreach (var control in Controls)
{
var desiredSize = GuiLayoutHelper.GetSizeWithMargins(control, context, availableSize);
switch (Orientation)
{
case GuiOrientation.Horizontal:
width += desiredSize.Width;
height = desiredSize.Height > height ? desiredSize.Height : height;
break;
case GuiOrientation.Vertical:
width = desiredSize.Width > width ? desiredSize.Width : width;
height += desiredSize.Height;
break;
default:
throw new InvalidOperationException($"Unexpected orientation {Orientation}");
}
}
return(new Size2(width, height));
}
public override void Layout(IGuiContext context, RectangleF rectangle)
{
var x = (float)Padding.Left;
var y = (float)Padding.Top;
var availableSize = rectangle.Size;
foreach (var control in Controls)
{
var desiredSize = GuiLayoutHelper.GetSizeWithMargins(control, context, availableSize);
switch (Orientation)
{
case GuiOrientation.Vertical:
control.VerticalAlignment = VerticalAlignment.Top;
PlaceControl(context, control, 0f, y, Width, desiredSize.Height);
y += desiredSize.Height + Spacing;
availableSize.Height -= desiredSize.Height;
break;
case GuiOrientation.Horizontal:
control.HorizontalAlignment = HorizontalAlignment.Left;
PlaceControl(context, control, x, 0f, desiredSize.Width, Height);
x += desiredSize.Width + Spacing;
availableSize.Height -= desiredSize.Height;
break;
default:
throw new InvalidOperationException($"Unexpected orientation {Orientation}");
}
}
}
protected override Size2 CalculateDesiredSize(IGuiContext context, Size2 availableSize)
{
var sizes = Controls.Select(control => GuiLayoutHelper.GetSizeWithMargins(control, context, availableSize)).ToArray();
var width = sizes.Max(s => s.Width);
var height = sizes.Max(s => s.Height);
return(new Size2(width, height) + Padding.Size);
}
protected TextInfo GetTextInfo(IGuiContext context, string text, Rectangle targetRectangle, HorizontalAlignment horizontalAlignment, VerticalAlignment verticalAlignment, Rectangle?clippingRectangle = null)
{
var font = Font ?? context.DefaultFont;
var textSize = font.GetStringRectangle(text ?? string.Empty, Vector2.Zero).Size;
var destinationRectangle = GuiLayoutHelper.AlignRectangle(horizontalAlignment, verticalAlignment, textSize, targetRectangle);
var textPosition = destinationRectangle.Location.ToVector2();
var textInfo = new TextInfo(text, font, textPosition, textSize, TextColor, clippingRectangle ?? ClippingRectangle);
return(textInfo);
}
private GridInfo CalculateGridInfo(IGuiContext context, Size2 availableSize)
{
var columns = Columns == 0 ? (int)Math.Ceiling(Math.Sqrt(Controls.Count)) : Columns;
var rows = Rows == 0 ? (int)Math.Ceiling((float)Controls.Count / columns) : Rows;
var maxCellWidth = availableSize.Width / columns;
var maxCellHeight = availableSize.Height / rows;
var sizes = Controls
.Select(control => GuiLayoutHelper.GetSizeWithMargins(control, context, new Size2(maxCellWidth, maxCellHeight)))
.ToArray();
var maxControlWidth = sizes.Length == 0 ? 0 : sizes.Max(s => s.Width);
var maxControlHeight = sizes.Length == 0 ? 0 : sizes.Max(s => s.Height);
return(new GridInfo
{
Columns = columns,
Rows = rows,
MinCellWidth = Math.Min(maxControlWidth, maxCellWidth),
MinCellHeight = Math.Min(maxControlHeight, maxCellHeight),
MaxCellWidth = maxCellWidth,
MaxCellHeight = maxCellHeight
});
}
protected static void PlaceControl(IGuiContext context, GuiControl control, float x, float y, float width, float height)
{
GuiLayoutHelper.PlaceControl(context, control, x, y, width, height);
}